/* ============================================
   LMS Component Library - Phase 1
   ============================================ */

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
    color: white;
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0) scale(0.98);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--color-gray-600);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-success {
    background-color: var(--color-success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background-color: #059669;
}

.btn-danger,
.btn-error {
    background-color: var(--color-error);
    color: white;
}

.btn-danger:hover:not(:disabled),
.btn-error:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid currentColor;
}

.btn-outline.btn-primary {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary);
    color: white;
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-gray-700);
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-gray-100);
}

/* ============================================
   Cards
   ============================================ */

.card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
    /* Consistent card spacing - no default margin */
    margin-bottom: 0;
}

/* Card spacing in grids - handled by gap utility */
.grid .card,
.grid-2 .card,
.grid-3 .card,
.grid-4 .card {
    margin-bottom: 0;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--color-gray-300);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.card-body {
    margin-bottom: var(--spacing-md);
}

.card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Course Card */
.course-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.course-card-image-link {
    display: block;
    position: relative;
    overflow: hidden;
}

.course-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--color-gray-200);
    transition: transform var(--transition-base);
    max-width: 100%;
}

.course-card:hover .course-card-image {
    transform: scale(1.05);
}

.course-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    background-color: var(--color-gray-800);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.course-card-discount-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    z-index: 1;
}

.course-card-category {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-card-title-link {
    display: block;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.course-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.course-card-title a {
    color: inherit;
}

.course-card-title a:hover {
    color: var(--color-primary);
}

.course-card-description {
    color: var(--text-body);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
}

.course-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    margin-top: auto;
    border-top: 1px solid var(--color-gray-200);
}

.course-card-price-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}

.course-card-price-original {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-decoration: line-through;
}

.course-card-price {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.course-card-price-free {
    color: var(--color-success);
}

.course-card-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary);
    color: #fff !important;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 1px 4px rgba(99, 102, 241, 0.25);
    white-space: nowrap;
}

.course-card-action-btn .course-card-action-btn-text {
    color: #fff;
}

.course-card-action-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
    color: white;
}

.course-card-action-btn i {
    font-size: var(--font-size-base);
    transition: transform var(--transition-base);
}

.course-card-action-btn:hover i {
    transform: translateX(2px);
}

.course-card-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Forms
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-body);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-family: inherit;
    background-color: white;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-bg);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
    opacity: 0.6;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-checkbox,
.form-radio {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--color-error);
}

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
    box-shadow: 0 0 0 3px var(--color-error-bg);
}

/* ============================================
   Badges & Tags
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--color-primary-bg);
    color: var(--color-primary);
}

/* Course card category: solid primary with white text for better contrast */
.badge-primary.course-card-category {
    background-color: var(--color-primary);
    color: white;
}

.badge-success {
    background-color: var(--color-success-bg);
    color: #065f46;
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: #92400e;
}

.badge-error {
    background-color: var(--color-error-bg);
    color: #991b1b;
}

.badge-info {
    background-color: var(--color-info-bg);
    color: #1e40af;
}

.badge-neutral {
    background-color: var(--color-gray-200);
    color: var(--color-gray-700);
}

/* ============================================
   Grid & Layout Utilities
   ============================================ */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* ============================================
   Public Explore Courses (Browse Courses)
   ============================================ */

.public-courses-wrap {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.public-courses-hero {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--spacing-xl);
}

.public-courses-hero-content {
    max-width: 100%;
}

.public-courses-title-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.public-courses-title {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.public-courses-title i {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.public-courses-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.public-courses-content {
    padding-bottom: var(--spacing-2xl);
}

.public-courses-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.public-courses-sidebar {
    padding: var(--spacing-xl);
    position: sticky;
    top: calc(var(--header-height, 60px) + var(--spacing-lg));
}

.public-courses-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.public-courses-sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    color: var(--text-primary);
    margin: 0;
}

.public-courses-sidebar-reset {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    text-decoration: none;
}

.public-courses-sidebar-reset:hover {
    text-decoration: underline;
}

.public-courses-filters .public-courses-field {
    margin-bottom: var(--spacing-lg);
}

.public-courses-filters .public-courses-field:last-of-type {
    margin-bottom: var(--spacing-xl);
}

.public-courses-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--text-body);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.public-courses-input-wrap {
    position: relative;
}

.public-courses-input-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    pointer-events: none;
}

.public-courses-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.25rem;
    font-size: var(--font-size-base);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.public-courses-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.public-courses-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
}

.public-courses-minmax {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.public-courses-input-num {
    padding-left: var(--spacing-md);
}

.public-courses-radios {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.public-courses-radio {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.public-courses-radio-input {
    accent-color: var(--color-primary);
}

.public-courses-apply {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.public-courses-main {
    min-width: 0;
}

.public-courses-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.public-courses-count {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.public-courses-sort {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.public-courses-sort-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.public-courses-sort-select {
    width: auto;
    min-width: 120px;
}

.public-courses-grid {
    margin-top: 0;
}

.public-courses-empty {
    padding: var(--spacing-2xl);
}

@media (max-width: 968px) {
    .public-courses-layout {
        grid-template-columns: 1fr;
    }

    .public-courses-sidebar {
        position: static;
    }
}

@media (max-width: 640px) {
    .public-courses-wrap {
        padding: 0 var(--spacing-md);
    }

    .public-courses-hero {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }

    .public-courses-title {
        font-size: var(--font-size-xl);
    }

    .public-courses-subtitle {
        font-size: var(--font-size-xs);
    }

    .public-help-hero {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }

    .public-help-title {
        font-size: var(--font-size-xl);
    }

    .public-help-subtitle {
        font-size: var(--font-size-xs);
    }

    .public-support-hero {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }

    .public-support-header {
        margin-bottom: var(--spacing-md);
    }

    .public-support-title {
        font-size: var(--font-size-xl);
    }

    .public-support-subtitle {
        font-size: var(--font-size-xs);
    }

    .public-legal-hero {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }

    .public-legal-header {
        margin-bottom: var(--spacing-md);
    }

    .public-legal-title {
        font-size: var(--font-size-xl);
    }

    .public-legal-subtitle {
        font-size: var(--font-size-xs);
    }
}

/* Courses Layout Grid - Responsive sidebar + content */
.courses-layout-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* Courses Grid - Responsive card grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Form Input with Icon */
.form-input-wrapper {
    position: relative;
}

.form-input-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary);
    pointer-events: none;
    z-index: 1;
}

.form-input-with-icon {
    padding-left: calc(var(--spacing-sm) * 2 + 20px);
}

.course-sort-select {
    width: auto;
    min-width: 120px;
}

/* Responsive Courses Layout */
@media (max-width: 968px) {
    .courses-layout-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .course-sidebar {
        margin-bottom: var(--spacing-lg);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .course-card-image {
        height: 180px;
    }
}

@media (max-width: 375px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .course-card-image {
        height: 160px;
    }
}

/* ============================================
   Legal Pages Styles
   ============================================ */

/* ============================================
   Public Legal (Privacy Policy, Terms - public view)
   ============================================ */

.public-legal-wrap {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-2xl);
}


.public-legal-hero {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--spacing-xl);
}

.public-legal-hero-content {
    max-width: 100%;
}

.public-legal-header {
    margin-bottom: var(--spacing-lg);
}

.public-legal-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.public-legal-back:hover {
    color: var(--color-primary);
    background: var(--color-primary-bg);
}

.public-legal-back i {
    font-size: var(--font-size-base);
}

.public-legal-title-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.public-legal-title {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.public-legal-title i {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.public-legal-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.public-legal-content-wrap {
    padding-bottom: var(--spacing-2xl);
}

.public-legal-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-sm);
}

.public-legal-body {
    max-width: none;
}

.public-legal-body h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--color-gray-100);
}

.public-legal-body h2:first-child {
    margin-top: 0;
}

.public-legal-body h2:first-child {
    margin-top: 0;
}

.public-legal-body p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.public-legal-body ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.public-legal-body li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.public-legal-body a {
    color: var(--color-primary);
    text-decoration: underline;
}

.public-legal-body a:hover {
    color: var(--color-primary-dark);
}

@media (max-width: 640px) {
    .public-legal-wrap {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }

    .public-legal-hero {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }

    .public-legal-title {
        font-size: var(--font-size-2xl);
    }

    .public-legal-card {
        padding: var(--spacing-xl);
    }

    .public-support-wrap {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }

    .public-support-hero {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }

    .public-support-title {
        font-size: var(--font-size-2xl);
    }
}

/* ============================================
   Legal content (shared)
   ============================================ */

.legal-content {
    max-width: none;
    line-height: var(--line-height-relaxed);
}

.legal-content h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.legal-content ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.legal-content li {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.legal-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.legal-content a:hover {
    color: var(--color-primary-dark);
}

/* Responsive Legal Pages */
@media (max-width: 640px) {
    .legal-content h2 {
        font-size: var(--font-size-lg);
        margin-top: var(--spacing-xl);
    }
    
    .legal-content p,
    .legal-content li {
        font-size: var(--font-size-sm);
    }
    
    .legal-content ul {
        padding-left: var(--spacing-lg);
    }
}

@media (max-width: 375px) {
    .legal-content h2 {
        font-size: var(--font-size-base);
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-sm);
    }
    
    .legal-content p,
    .legal-content li {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .legal-content ul {
        padding-left: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .course-card-body {
        padding: var(--spacing-md);
    }
    
    .course-card-title {
        font-size: var(--font-size-base);
    }
    
    .course-card-description {
        font-size: var(--font-size-xs);
    }
    
    .course-card-footer {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .course-sort-select {
        width: 100%;
        min-width: 100%;
    }
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.ml-sm {
    margin-left: var(--spacing-sm);
}

.ml-md {
    margin-left: var(--spacing-md);
}

.ml-lg {
    margin-left: var(--spacing-lg);
}

.mb-xs {
    margin-bottom: var(--spacing-xs);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.mb-2xl {
    margin-bottom: var(--spacing-2xl);
}

.mb-0 {
    margin-bottom: 0;
}

.mt-xs {
    margin-top: var(--spacing-xs);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

/* Padding utilities */
.p-4xl {
    padding: var(--spacing-2xl);
}

.pb-lg {
    padding-bottom: var(--spacing-lg);
}

.pb-xl {
    padding-bottom: var(--spacing-xl);
}

/* Border utilities */
.border-b {
    border-bottom-width: 1px;
    border-bottom-style: solid;
}

.border-gray-200 {
    border-color: var(--color-gray-200);
}

.border-gray-100 {
    border-color: var(--color-gray-100);
}

/* Cursor utilities */
.cursor-pointer {
    cursor: pointer;
}

/* Height utilities */
.h-11 {
    height: 2.75rem;
}

/* Width utilities */
.min-w-300 {
    min-width: 300px;
}

.min-w-180 {
    min-width: 180px;
}

/* Table improvements */
table {
    border-collapse: separate;
    border-spacing: 0;
}

table thead th {
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
}

table tbody tr {
    transition: background-color var(--transition-fast);
}

table tbody tr:hover {
    background-color: var(--color-gray-50);
}

table tbody td {
    vertical-align: middle;
}

/* Form improvements */
.form-group {
    margin-bottom: 0;
}

.form-group:not(:last-child) {
    margin-bottom: 0;
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.flex-wrap {
    flex-wrap: wrap;
}

/* Space utilities */
.space-y-sm > * + * {
    margin-top: var(--spacing-sm);
}

.space-y-md > * + * {
    margin-top: var(--spacing-md);
}

.space-y-lg > * + * {
    margin-top: var(--spacing-lg);
}

.space-y-xl > * + * {
    margin-top: var(--spacing-xl);
}

/* ============================================
   Loading States
   ============================================ */

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.skeleton {
    background: linear-gradient(90deg, var(--color-gray-200) 25%, var(--color-gray-100) 50%, var(--color-gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   Responsive Grid Adjustments
   ============================================ */

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
        justify-content: center;
    }

    .course-card-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
}

/* ============================================
   Additional Utility Classes
   ============================================ */

.text-gray-500 {
    color: var(--color-gray-500);
}

.text-gray-600 {
    color: var(--color-gray-600);
}

.text-success {
    color: var(--color-success);
}

.text-primary {
    color: var(--color-primary);
}

.text-info {
    color: var(--color-info);
}

.text-warning {
    color: var(--color-warning);
}

.text-error {
    color: var(--color-error);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-600);
}

.empty-state h2 {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   Course Detail Specific Styles
   ============================================ */

.course-detail-header {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.course-info {
    flex: 1;
}

.course-sidebar {
    background: var(--color-gray-100);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
    height: fit-content;
}

.course-thumbnail-large {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    background: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.course-price-large {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.course-price-large.free {
    color: var(--color-success);
}

.course-price-original {
    font-size: var(--font-size-xl);
    color: var(--color-gray-500);
    text-decoration: line-through;
    margin-right: var(--spacing-sm);
}

.course-discount-badge {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-xs);
}

.course-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.course-instructor-card {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.instructor-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.instructor-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.instructor-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.instructor-email {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.course-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

@media (max-width: 768px) {
    .course-detail-header {
        grid-template-columns: 1fr;
    }

    .course-sidebar {
        position: static;
    }
}

/* ============================================
   Learning Interface Styles
   ============================================ */

.video-player-container {
    width: 100%;
    max-width: 100%;
}

.video-player-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9 aspect ratio */
    background: var(--color-gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
}

.video-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.pdf-viewer-wrapper {
    width: 100%;
    height: 800px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.pdf-viewer {
    width: 100%;
    height: 100%;
    border: none;
}

.text-content {
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.text-content h1,
.text-content h2,
.text-content h3,
.text-content h4,
.text-content h5,
.text-content h6 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.text-content p {
    margin-bottom: var(--spacing-md);
}

.text-content ul,
.text-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.text-content code {
    background: var(--color-gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

.text-content pre {
    background: var(--color-gray-100);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.text-content pre code {
    background: none;
    padding: 0;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s ease;
    border-radius: var(--radius-full);
}

.progress-fill.success {
    background: var(--color-success);
}

.progress-fill.warning {
    background: var(--color-warning);
}

.progress-fill.error {
    background: var(--color-error);
}

/* Quiz Styles */
.quiz-timer {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.quiz-timer.warning {
    color: var(--color-error);
    background: var(--color-error-bg);
}

.question-item {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-200);
}

.question-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.question-number {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.question-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.option-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    /* background: white; */
}

.option-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.option-item.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.option-item.correct {
    background: var(--color-success-bg);
    border-color: var(--color-success);
    color: var(--color-success);
}

.option-item.incorrect {
    background: var(--color-error-bg);
    border-color: var(--color-error);
    color: var(--color-error);
}

.option-item input[type="radio"],
.option-item input[type="checkbox"] {
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

/* Quiz Results */
.score-circle {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-full);
    border: 10px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.score-circle.passed {
    border-color: var(--color-success);
    color: var(--color-success);
}

.score-circle.failed {
    border-color: var(--color-error);
    color: var(--color-error);
}

/* ============================================
   Curriculum Page - Professional Redesign
   ============================================ */

/* Curriculum Page Container */
.curriculum-page {
    padding: var(--spacing-xl) 0;
}

.curriculum-page-student {
    padding: 0;
}

/* Course Hero Section */
.curriculum-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
    color: white;
    position: relative;
    overflow: hidden;
}

.curriculum-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    pointer-events: none;
}

.curriculum-hero-content {
    position: relative;
    z-index: 1;
}

.curriculum-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.curriculum-hero-badge i {
    font-size: var(--font-size-sm);
}

.curriculum-hero-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.2;
    color: white;
}

.curriculum-hero-description {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin: 0 0 var(--spacing-xl) 0;
    opacity: 0.95;
    max-width: 800px;
}

/* Progress Section */
.curriculum-progress-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.curriculum-progress-header {
    margin-bottom: var(--spacing-md);
}

.curriculum-progress-stats {
    display: flex;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.curriculum-progress-stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.curriculum-progress-stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: 1;
}

.curriculum-progress-stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.curriculum-progress-bar-container {
    margin-top: var(--spacing-md);
}

.curriculum-progress-bar {
    height: 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.curriculum-progress-bar-fill {
    height: 100%;
    background: white;
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.3);
}

/* Section Headers */
.curriculum-section {
    margin-bottom: var(--spacing-2xl);
}

.curriculum-module {
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-primary);
}

.curriculum-module-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    list-style: none;
    background: var(--bg-secondary);
    font-weight: 600;
}

.curriculum-module-summary::-webkit-details-marker {
    display: none;
}

.curriculum-module-title {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.curriculum-module-count {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-gray-500);
}

.course-detail-module {
    margin-bottom: var(--spacing-sm);
}

.course-detail-module-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.lesson-outline-module {
    margin: var(--spacing-md) 0 var(--spacing-xs);
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-gray-500);
}

.lesson-outline-module:first-child {
    margin-top: 0;
}

.curriculum-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.curriculum-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
}

.curriculum-section-title i {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.curriculum-section-count {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
}

/* Lessons List */
.curriculum-lessons-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.curriculum-lesson-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    gap: var(--spacing-lg);
}

.curriculum-lesson-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
    transform: translateY(-2px);
}

.curriculum-lesson-card-completed {
    background: var(--color-success-bg);
    border-color: var(--color-success);
}

.curriculum-lesson-card-completed:hover {
    border-color: var(--color-success-dark);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.15);
}

.curriculum-lesson-card-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex: 1;
    min-width: 0;
}

.curriculum-lesson-number {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
    transition: all var(--transition-base);
}

.curriculum-lesson-card:hover .curriculum-lesson-number {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.3);
}

.curriculum-lesson-number-completed {
    background: var(--color-success);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.curriculum-lesson-number i {
    font-size: var(--font-size-xl);
}

.curriculum-lesson-content {
    flex: 1;
    min-width: 0;
}

.curriculum-lesson-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    flex-wrap: wrap;
}

.curriculum-lesson-type-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.curriculum-lesson-type-badge i {
    font-size: var(--font-size-sm);
}

.curriculum-lesson-type-badge.type-video {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.curriculum-lesson-type-badge.type-pdf {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.curriculum-lesson-type-badge.type-text {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.curriculum-lesson-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: 1.4;
    flex: 1;
    min-width: 0;
}

.curriculum-lesson-card:hover .curriculum-lesson-title {
    color: var(--color-primary);
}

.curriculum-lesson-card-completed .curriculum-lesson-title {
    color: var(--color-gray-700);
}

.curriculum-lesson-meta {
    margin-top: var(--spacing-xs);
}

.curriculum-lesson-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.curriculum-lesson-status-completed {
    color: var(--color-success);
}

.curriculum-lesson-status-in-progress {
    color: var(--color-primary);
}

.curriculum-lesson-status-not-started {
    color: var(--color-gray-500);
}

.curriculum-lesson-card-right {
    flex-shrink: 0;
}

.curriculum-lesson-action,
.curriculum-lesson-action-completed {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.curriculum-lesson-action {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.curriculum-lesson-card:hover .curriculum-lesson-action {
    background: var(--color-primary);
    color: white;
    transform: translateX(4px);
}

.curriculum-lesson-action-completed {
    background: var(--color-success);
    color: white;
}

.curriculum-lesson-action i,
.curriculum-lesson-action-completed i {
    font-size: var(--font-size-xl);
}

/* Quizzes Grid */
.curriculum-quizzes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.curriculum-quiz-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    gap: var(--spacing-md);
}

.curriculum-quiz-card:hover {
    border-color: var(--color-warning);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.15);
    transform: translateY(-2px);
}

.curriculum-quiz-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
}

.curriculum-quiz-number {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-warning-bg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-warning);
}

.curriculum-quiz-number i {
    font-size: var(--font-size-sm);
}

.curriculum-quiz-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.curriculum-quiz-badge-passed {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.curriculum-quiz-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.4;
}

.curriculum-quiz-card:hover .curriculum-quiz-title {
    color: var(--color-warning);
}

.curriculum-quiz-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.curriculum-quiz-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.curriculum-quiz-meta-item i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.curriculum-quiz-meta-score {
    color: var(--color-warning);
    font-weight: var(--font-weight-semibold);
}

.curriculum-quiz-meta-score i {
    color: var(--color-warning);
}

.curriculum-quiz-action {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
}

/* Empty State */
.curriculum-empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    background: white;
    border-radius: var(--radius-lg);
    border: 2px dashed var(--color-gray-300);
}

.curriculum-empty-icon {
    width: 96px;
    height: 96px;
    margin: 0 auto var(--spacing-lg);
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    color: var(--color-primary);
}

.curriculum-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.curriculum-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-body);
    margin: 0;
}

/* Dark Mode Support */
[data-theme="dark"] .curriculum-hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-gray-800) 100%);
}

[data-theme="dark"] .curriculum-section-title {
    color: var(--text-primary);
}

[data-theme="dark"] .curriculum-section-count {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .curriculum-lesson-card,
[data-theme="dark"] .curriculum-quiz-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .curriculum-lesson-card:hover,
[data-theme="dark"] .curriculum-quiz-card:hover {
    border-color: var(--color-primary-light);
}

[data-theme="dark"] .curriculum-lesson-title,
[data-theme="dark"] .curriculum-quiz-title {
    color: var(--text-primary);
}

[data-theme="dark"] .curriculum-lesson-status-not-started {
    color: var(--text-secondary);
}

[data-theme="dark"] .curriculum-lesson-action {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .curriculum-empty-state {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .curriculum-empty-title {
    color: var(--text-primary);
}

[data-theme="dark"] .curriculum-empty-description {
    color: var(--text-secondary);
}

[data-theme="dark"] .curriculum-empty-icon {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .curriculum-hero {
        padding: var(--spacing-xl);
    }

    .curriculum-hero-title {
        font-size: var(--font-size-2xl);
    }

    .curriculum-hero-description {
        font-size: var(--font-size-base);
    }

    .curriculum-progress-stats {
        gap: var(--spacing-lg);
    }

    .curriculum-progress-stat-value {
        font-size: var(--font-size-2xl);
    }

    .curriculum-lesson-card {
        padding: var(--spacing-lg);
        flex-direction: column;
        align-items: flex-start;
    }

    .curriculum-lesson-card-left {
        width: 100%;
    }

    .curriculum-lesson-number {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }

    .curriculum-quizzes-grid {
        grid-template-columns: 1fr;
    }

    .curriculum-section-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Legacy Support - Keep old classes for backward compatibility */
.lesson-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    cursor: pointer;
    transition: background var(--transition-base);
}

.lesson-item:hover {
    background: var(--color-gray-50);
}

.lesson-item:last-child {
    border-bottom: none;
}

.lesson-number {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    margin-right: var(--spacing-lg);
    flex-shrink: 0;
}

.lesson-number.completed {
    background: var(--color-success);
}

.lesson-type-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-right: var(--spacing-sm);
}

.type-video {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.type-pdf {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.type-text {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

/* ============================================
   File Upload Components
   ============================================ */

.file-upload-area {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    background: var(--color-gray-50);
    transition: all var(--transition-base);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.file-upload-area.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.file-upload-icon {
    font-size: var(--font-size-4xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.file-upload-text {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

.file-upload-hint {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.file-preview {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.file-preview img {
    max-width: 100px;
    max-height: 100px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.file-preview-info {
    flex: 1;
}

.file-preview-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.file-preview-size {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.file-preview-remove {
    color: var(--color-error);
    cursor: pointer;
    font-size: var(--font-size-xl);
}

/* Form Section Styles */
.type-section {
    display: none;
}

.type-section.active {
    display: block;
}

/* ============================================
   Touch Optimizations
   ============================================ */

/* Ensure minimum touch target size (44x44px) */
.btn,
.navbar-link,
.form-checkbox,
.form-radio,
.option-item {
    min-height: 44px;
    min-width: 44px;
}

.btn-sm {
    min-height: 36px;
    min-width: 36px;
}

/* Larger touch targets on mobile */
@media (max-width: 768px) {
    .btn {
        min-height: 48px;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .form-input,
    .form-select,
    .form-textarea {
        min-height: 44px;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }
}

/* ============================================
   Loading States
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.loading-text {
    color: white;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
}

/* Button loading state */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
    /* Avoid stacking hover/active translate with the spinner */
    transform: none !important;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    box-sizing: border-box;
    border: 2px solid rgba(255, 255, 255, 0.28);
    border-top-color: #fff;
    border-radius: 50%;
    /* spin keyframes only set rotate(); center with margin so rotation stays on-axis */
    animation: spin 0.6s linear infinite;
}

.btn-secondary.loading::after,
.btn-outline.loading::after {
    border: 2px solid rgba(0, 0, 0, 0.12);
    border-top-color: rgba(255, 255, 255, 0.92);
}

/* ============================================
   Empty States
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-600);
}

.empty-state-icon {
    font-size: var(--font-size-6xl);
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
    display: flex;
    justify-content: center;
    align-items: center;
}

.empty-state-icon i {
    font-size: inherit;
    color: var(--color-primary);
}

.empty-state h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.empty-state p {
    color: var(--text-body);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state .btn {
    margin-top: var(--spacing-md);
}

/* ============================================
   Community Card Styles
   ============================================ */

.community-card {
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    display: flex;
    flex-direction: column;
}

.community-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.community-card:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.community-card:active {
    transform: translateY(0);
}

.community-card-footer {
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.gap-xs {
    gap: var(--spacing-xs);
}

/* ============================================
   Animation Refinements
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

.scale-in {
    animation: scaleIn 0.2s ease-out;
}

/* Smooth transitions for interactive elements */
.card,
.btn,
.navbar-link,
.form-input,
.form-select,
.form-textarea {
    transition: all var(--transition-base);
}

/* Hover effects */
@media (hover: hover) {
    .card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Enhanced focus for interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--color-primary-bg);
}

/* Skip link focus */
.skip-link:focus {
    top: 0;
    outline: 3px solid white;
    outline-offset: 2px;
}

/* Remove default focus outline and use custom */
*:focus {
    outline: none;
}

/* Ensure buttons are keyboard accessible */
button:not(:disabled),
a[role="button"] {
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid var(--color-gray-900);
    }

    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* ARIA live regions */
[role="status"],
[role="alert"] {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

[role="status"]:focus,
[role="alert"]:focus {
    position: static;
    left: auto;
    width: auto;
    height: auto;
    overflow: visible;
}

/* Ensure proper color contrast */
.text-gray-600 {
    color: var(--color-gray-600);
    /* Ensure 4.5:1 contrast ratio */
}

.text-gray-500 {
    color: var(--color-gray-500);
    /* Ensure 4.5:1 contrast ratio */
}

/* Form error association */
.form-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: block;
}

.form-input[aria-invalid="true"],
.form-select[aria-invalid="true"],
.form-textarea[aria-invalid="true"] {
    border-color: var(--color-error);
}

.form-input[aria-invalid="true"]:focus,
.form-select[aria-invalid="true"]:focus,
.form-textarea[aria-invalid="true"]:focus {
    outline-color: var(--color-error);
    box-shadow: 0 0 0 4px var(--color-error-bg);
}

/* Required field indicator */
.form-label.required::after {
    content: " *";
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

/* Loading state announcement */
.loading-announcement {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Ensure images have alt text - visual indicator in development */
img:not([alt]),
img[alt=""] {
    border: 2px dashed var(--color-warning);
}

/* Decorative images should have empty alt */
img[role="presentation"],
img[aria-hidden="true"] {
    border: none;
}

/* Landmark roles */
main[role="main"] {
    outline: none;
}

nav[role="navigation"] {
    outline: none;
}

/* Ensure proper heading hierarchy */
h1+h3,
h2+h4 {
    margin-top: var(--spacing-md);
}

/* Fieldset and legend styling */
fieldset {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

legend {
    padding: 0 var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

/* Ensure all images have alt text styling */
img[alt=""] {
    border: 2px dashed var(--color-warning);
}

/* Keyboard navigation improvements */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    z-index: 1;
}

/* Ensure sufficient color contrast for text */
.text-gray-600 {
    color: var(--color-gray-600);
    /* WCAG AA: 4.5:1 contrast ratio */
}

.text-gray-500 {
    color: var(--color-gray-500);
    /* WCAG AA: 4.5:1 contrast ratio */
}

/* Link contrast */
a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

a:hover,
a:focus {
    color: var(--color-primary-dark);
    text-decoration-thickness: 2px;
}

/* Ensure buttons have sufficient contrast */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
    /* WCAG AA: 4.5:1 contrast ratio */
}

.btn-secondary {
    background-color: var(--color-gray-600);
    color: white;
    /* WCAG AA: 4.5:1 contrast ratio */
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: white;
}

/* Form validation states */
.form-input:invalid:not(:focus):not(:placeholder-shown),
.form-select:invalid:not(:focus),
.form-textarea:invalid:not(:focus):not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-input:valid:not(:focus):not(:placeholder-shown),
.form-select:valid:not(:focus),
.form-textarea:valid:not(:focus):not(:placeholder-shown) {
    border-color: var(--color-success);
}

/* Ensure table headers are properly associated */
table th {
    font-weight: var(--font-weight-semibold);
}

table th[scope="col"] {
    text-align: left;
}

table th[scope="row"] {
    text-align: right;
    padding-right: var(--spacing-md);
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
}

@media (max-width: 768px) {
    .video-player-wrapper {
        padding-bottom: 56.25%;
    }

    .pdf-viewer-wrapper {
        height: 600px;
    }

    .quiz-timer {
        font-size: var(--font-size-xl);
    }

    .file-upload-area {
        padding: var(--spacing-lg);
    }

    .empty-state {
        padding: var(--spacing-xl);
    }

    .empty-state-icon {
        font-size: var(--font-size-4xl);
    }
}

/* ============================================
   Landing Page Styles
   ============================================ */

.landing-hero {
    min-height: calc(100vh - var(--header-height));
    max-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-lg, 1.25rem) var(--spacing-xl, 1.5rem);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
    overflow: hidden;
    margin-top: 0;
}

.landing-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.landing-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl, 3rem);
    align-items: start;
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.landing-hero-text {
    color: white;
}

.landing-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.landing-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
    color: white;
}

.landing-title-accent {
    color: var(--color-primary-light);
}

.landing-subtitle {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2xl);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
}

.landing-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.landing-feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.landing-feature-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(4px);
}

.landing-feature-item i {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-light);
    flex-shrink: 0;
    margin-top: var(--spacing-xs);
}

.landing-feature-item div {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.landing-feature-item strong {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: white;
}

.landing-feature-item span {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
}

/* Auth Page Container - Centered wrapper for login page */
.auth-page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    width: 100%;
}

.landing-login-card {
    background: white;
    border-radius: var(--radius-xl, 0.75rem);
    padding: var(--spacing-xl, 1.5rem);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    max-width: 440px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid rgba(0, 0, 0, 0.05);
    max-height: calc(100vh - var(--header-height, 60px) - var(--spacing-2xl, 3rem));
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

.landing-login-card::-webkit-scrollbar {
    width: 6px;
}

.landing-login-card::-webkit-scrollbar-track {
    background: transparent;
}

.landing-login-card::-webkit-scrollbar-thumb {
    background: var(--color-gray-300, #d1d5db);
    border-radius: 3px;
}

.landing-login-card::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400, #9ca3af);
}

.landing-card-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.landing-card-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: var(--line-height-tight);
}

.landing-card-header p {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-normal);
}

.landing-google-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm, 0.75rem);
    padding: var(--spacing-sm, 0.75rem) var(--spacing-lg, 1.25rem);
    font-size: var(--font-size-base, 1rem);
    font-weight: var(--font-weight-semibold, 600);
    margin-bottom: 0;
    min-height: 44px;
    border-radius: var(--radius-md, 0.5rem);
    transition: all var(--transition-fast, 0.2s);
}

.landing-google-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.landing-google-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.landing-card-footer {
    text-align: center;
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.landing-card-footer p {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: 0;
    line-height: 1.4;
}

/* Remove main-content padding when landing hero is present */
body.landing-page .main-content {
    padding: 0;
}

@media (max-width: 768px) {
    body.landing-page .main-content {
        min-height: auto;
    }
}

/* ============================================
   App Footer - Corporate SaaS Style
   ============================================ */

.app-footer {
    background-color: var(--color-gray-800);
    color: var(--color-gray-300);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    border-top: 1px solid var(--color-gray-700);
}

body.landing-page .app-footer,
body.error-404-page .app-footer {
    margin-top: 0;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) + env(safe-area-inset-left));
    padding-right: calc(var(--spacing-lg) + env(safe-area-inset-right));
    padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-brand-name {
    color: var(--color-gray-50);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    line-height: var(--line-height-tight);
}

.footer-brand-accent {
    color: var(--color-primary-light);
}

.footer-brand-tagline {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    margin: 0;
    max-width: 280px;
}

.footer-heading {
    color: var(--color-gray-100);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 var(--spacing-md);
    line-height: var(--line-height-tight);
}

.footer-column .footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column .footer-links li {
    margin: 0;
}

.footer-link {
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: inline-block;
}

.footer-link:hover,
.footer-link:focus-visible {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.footer-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom-left,
.footer-bottom-right {
    margin: 0;
}

.footer-copyright {
    color: var(--color-gray-400);
    font-size: var(--font-size-xs);
}

.footer-credit {
    color: var(--color-gray-400);
    font-size: var(--font-size-xs);
}

.footer-credit-link {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-credit-link:hover,
.footer-credit-link:focus-visible {
    color: var(--color-primary);
    text-decoration: underline;
}

.footer-credit-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Footer responsive */
@media (max-width: 768px) {
    .app-footer .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md) var(--spacing-sm);
    }

    .app-footer .footer-brand {
        grid-column: 1 / -1;
    }

    .app-footer .footer-heading {
        margin-bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .app-footer .footer-inner {
        padding: 0 var(--spacing-md);
    }

    .app-footer .footer-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm) var(--spacing-xs);
    }

    .app-footer .footer-brand {
        grid-column: 1 / -1;
    }

    .app-footer .footer-link {
        font-size: var(--font-size-xs);
    }

    .app-footer .footer-bottom {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--spacing-sm);
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .auth-page-container {
        padding: 0 var(--spacing-lg);
    }
    
    .landing-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .landing-login-card {
        margin-left: auto;
        margin-right: auto;
        max-width: 100%;
    }
    
    .landing-title {
        font-size: var(--font-size-4xl);
    }
    
    .landing-subtitle {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 768px) {
    .landing-hero {
        min-height: auto;
        max-height: none;
        overflow: visible;
        align-items: flex-start;
        padding: var(--spacing-md) var(--spacing-md) var(--spacing-xl);
        padding-top: max(var(--spacing-md), env(safe-area-inset-top));
    }

    .auth-page-container {
        padding: 0;
        max-width: 100%;
    }

    .landing-content {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-lg);
        align-items: stretch;
    }

    /* Welcome / branding above form; hide bulky feature cards on small screens */
    .landing-hero-text {
        text-align: left;
    }

    .landing-features {
        display: none;
    }

    .landing-badge {
        margin-bottom: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .landing-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }

    .landing-subtitle {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
        max-width: none;
    }

    .landing-login-card {
        max-height: none;
        overflow: visible;
        max-width: none;
        width: 100%;
        margin: 0;
        padding: var(--spacing-lg);
        flex-shrink: 0;
    }

    body.landing-page .app-footer {
        margin-top: 0;
        flex-shrink: 0;
    }
}

@media (max-width: 640px) {
    .auth-page-container {
        padding: 0;
    }
    
    .landing-hero {
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-lg);
    }
    
    .landing-title {
        font-size: var(--font-size-xl);
    }
    
    .landing-login-card {
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .landing-card-header {
        margin-bottom: var(--spacing-md);
    }
    
    .landing-card-header h2 {
        font-size: var(--font-size-xl);
    }
    
    .landing-card-header p {
        font-size: var(--font-size-sm);
    }
}

/* Mobile - 375px and below */
@media (max-width: 375px) {
    .auth-page-container {
        padding: 0;
    }
    
    .landing-hero {
        padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-lg);
    }
    
    .landing-content {
        gap: var(--spacing-md);
    }
    
    .landing-login-card {
        padding: var(--spacing-md);
    }
    
    .landing-title {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-xs);
    }
    
    .landing-subtitle {
        font-size: var(--font-size-xs);
        margin-bottom: var(--spacing-sm);
    }
    
    .landing-google-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
        min-height: 44px;
    }
    
    .landing-google-btn svg {
        width: 18px;
        height: 18px;
    }
}

/* ============================================
   Communities Page Styles
   ============================================ */

/* ============================================
   Public Communities (public view only)
   ============================================ */

.public-communities-wrap {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.public-communities-hero {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--spacing-xl);
}

.public-communities-hero-content {
    max-width: 100%;
}

.public-communities-header {
    margin-bottom: var(--spacing-lg);
}

.public-communities-title-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.public-communities-title {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.public-communities-title i {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.public-communities-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.public-communities-content {
    padding-bottom: var(--spacing-2xl);
}

.public-communities-filters {
    margin-top: var(--spacing-lg);
}

.public-communities-filters-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
}

.public-communities-filters-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.public-communities-pills {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.public-communities-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.public-communities-pill:hover {
    background: var(--color-gray-50);
    border-color: var(--color-primary-light);
    color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.public-communities-pill.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.public-communities-pill.active:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.public-communities-search {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 240px;
    max-width: 320px;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.public-communities-search:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), var(--shadow-md);
}
    transition: border-color var(--transition-fast);
}

.public-communities-search:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.public-communities-search i {
    color: var(--color-primary);
    opacity: 0.7;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    transition: opacity var(--transition-fast);
}

.public-communities-search:focus-within i {
    opacity: 1;
    color: var(--color-primary);
}

.public-communities-search input {
    flex: 1;
    min-width: 0;
    border: none;
    background: none;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.public-communities-search input::placeholder {
    color: var(--color-gray-400);
}

.public-communities-search input:focus {
    outline: none;
}

.public-communities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.public-community-card {
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
}

.public-community-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.public-community-card:hover .community-status-badge.explore {
    background: var(--color-primary);
    color: white;
}

.public-community-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    height: 120px;
}

.public-community-badges {
    display: flex;
    gap: var(--spacing-xs);
}

.public-communities-empty {
    padding: var(--spacing-2xl);
}

/* ============================================
   Help Center - SaaS Knowledge Base
   ============================================ */

.help-center-wrap {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    padding-bottom: var(--spacing-2xl);
}

.help-hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: var(--spacing-lg);
}

.help-hero-inner {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.help-hero-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.help-hero-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
    line-height: 1.5;
}

.help-search-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
    margin-top: var(--spacing-sm);
}

.help-search {
    flex: 1;
    min-width: 200px;
    position: relative;
}

.help-search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    pointer-events: none;
}

.help-search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 2.75rem;
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
    color: var(--color-gray-900);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.help-search-input::placeholder {
    color: var(--color-gray-400);
}

.help-search-input:hover {
    border-color: var(--color-gray-300);
}

.help-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.help-cta {
    flex-shrink: 0;
}

.help-content-area {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    color: var(--color-gray-600);
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-fast);
}

.chip:hover {
    background: var(--color-gray-200);
    border-color: var(--color-gray-300);
    color: var(--color-gray-800);
}

.chip:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.chip.chip-active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.chip.chip-active:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.chip-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    background: rgba(0, 0, 0, 0.12);
    border-radius: var(--radius-full);
}

.chip.chip-active .chip-count {
    background: rgba(255, 255, 255, 0.3);
}

/* FAQ Accordion */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 0;
    list-style: none;
    padding: 0;
    margin: 0;
}

.faq-item {
    border: 1px solid var(--color-gray-200);
    border-bottom: none;
    background: white;
}

.faq-item:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.faq-item:last-child {
    border-bottom: 1px solid var(--color-gray-200);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.faq-item:only-child {
    border-radius: var(--radius-md);
}

.faq-item-heading {
    margin: 0;
    padding: 0;
}

.faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    line-height: 1.4;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.faq-q:hover {
    background: var(--color-gray-50);
}

.faq-q:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

.faq-q[aria-expanded="true"] {
    background: var(--color-gray-50);
}

.faq-q[aria-expanded="true"] .faq-q-icon {
    transform: rotate(180deg);
}

.faq-q-text {
    flex: 1;
    min-width: 0;
    padding-right: var(--spacing-md);
}

.faq-q-icon {
    flex-shrink: 0;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    transition: transform var(--transition-fast);
}

.faq-a {
    border-top: 1px solid var(--color-gray-200);
}

.faq-a-inner {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

.faq-a-text {
    margin: 0 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
    white-space: pre-wrap;
}

.faq-a-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast), gap var(--transition-fast);
}

.faq-a-link:hover {
    color: var(--color-primary-dark);
    gap: var(--spacing-sm);
}

/* Empty state */
.help-empty {
    padding: var(--spacing-xl);
    text-align: center;
}

.help-empty-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.help-empty-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
}

.help-empty-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.help-empty-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.help-empty-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-sm);
}

@media (max-width: 640px) {
    .help-center-wrap {
        padding: 0 var(--spacing-md);
    }

    .help-hero {
        padding: var(--spacing-lg) 0;
    }

    .help-hero-title {
        font-size: var(--font-size-xl);
    }

    .help-search-row {
        flex-direction: column;
        align-items: stretch;
    }

    .help-search {
        min-width: 0;
    }

    .faq-q {
        padding: var(--spacing-md);
    }

    .faq-a-inner {
        padding: var(--spacing-md);
    }
}

/* ============================================
   FAQ Detail Page - Knowledge Base Article
   ============================================ */

.faq-detail-wrap {
    max-width: 1160px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-2xl);
}

.faq-detail-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.faq-detail-breadcrumb a {
    color: var(--color-gray-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.faq-detail-breadcrumb a:hover {
    color: var(--color-primary);
}

.faq-detail-breadcrumb-sep {
    color: var(--color-gray-400);
    user-select: none;
}

.faq-detail-breadcrumb-current {
    color: var(--color-gray-800);
    font-weight: var(--font-weight-medium);
}

.faq-detail-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .faq-detail-layout {
        grid-template-columns: 1fr 320px;
        align-items: start;
    }
}

.faq-detail-main {
    min-width: 0;
}

.faq-detail-header {
    margin-bottom: var(--spacing-xl);
}

.faq-detail-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.faq-detail-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-md);
    letter-spacing: -0.02em;
    line-height: 1.25;
}

.faq-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

.faq-detail-meta-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    background: var(--color-gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
}

.faq-detail-meta-date {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.faq-detail-body {
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.faq-detail-answer {
    font-size: var(--font-size-base);
    line-height: 1.75;
    color: var(--color-gray-700);
    white-space: pre-wrap;
}

.faq-detail-answer p {
    margin: 0 0 var(--spacing-md);
}

.faq-detail-answer p:last-child {
    margin-bottom: 0;
}

.faq-detail-footer {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.faq-detail-back i,
.faq-detail-contact i {
    font-size: var(--font-size-lg);
}

.faq-detail-aside {
    position: sticky;
    top: var(--spacing-lg);
}

.faq-detail-support-card {
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
}

.faq-detail-support-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.15));
    border-radius: var(--radius-md);
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
}

.faq-detail-support-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm);
}

.faq-detail-support-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-lg);
    line-height: 1.5;
}

.faq-detail-support-cta {
    width: 100%;
}

/* Print: hide aside, ensure readable content */
@media print {
    .no-print {
        display: none !important;
    }

    .faq-detail-wrap {
        padding: 0;
    }

    .faq-detail-body {
        border: 1px solid #ccc;
        box-shadow: none;
    }

    .faq-detail-answer {
        color: #333;
    }
}

@media (max-width: 640px) {
    .faq-detail-wrap {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .faq-detail-title {
        font-size: var(--font-size-xl);
    }

    .faq-detail-body {
        padding: var(--spacing-lg);
    }

    .faq-detail-footer {
        flex-direction: column;
    }

    .faq-detail-back,
    .faq-detail-contact {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Public Course Detail (public view only)
   ============================================ */

.public-course-detail-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-2xl);
}

.public-course-detail-hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.public-course-detail-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast);
}

.public-course-detail-back:hover {
    color: var(--color-primary);
}

.public-course-detail-back i {
    font-size: var(--font-size-lg);
}

.public-course-detail-badge {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.public-course-detail-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.public-course-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.public-course-detail-meta span + span::before {
    content: '·';
    margin-right: var(--spacing-sm);
    color: var(--color-gray-400);
}

.public-course-detail-grid.public-course-detail-grid {
    gap: var(--spacing-2xl);
}

.public-course-detail-card {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.public-course-detail-card h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

/* Course detail intro (merged header + about) */
.course-detail-intro {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    background: var(--bg-primary);
    overflow: hidden;
    isolation: isolate;
    background-clip: padding-box;
}

.course-detail-intro.card:hover,
.course-detail-grid .card:hover,
.course-detail-sidebar.card:hover {
    transform: none;
}

.course-detail-intro-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast);
}

.course-detail-intro-back:hover {
    color: var(--color-primary);
}

.course-detail-intro-back i {
    font-size: var(--font-size-lg);
}

.course-detail-intro-top {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
}

.course-detail-intro-badge {
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.course-detail-intro-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.course-detail-intro-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.course-detail-intro-sep {
    color: var(--color-gray-400);
    user-select: none;
}

.course-detail-intro-about-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

.course-detail-intro-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.course-detail-intro-description p {
    margin: 0 0 var(--spacing-md) 0;
}

.course-detail-intro-description p:last-child {
    margin-bottom: 0;
}

@media (max-width: 640px) {
    .course-detail-intro {
        padding: var(--spacing-lg);
    }

    .course-detail-intro-title {
        font-size: var(--font-size-2xl);
    }
}

.course-detail-sidebar {
    padding: 0;
    overflow: hidden;
}

.course-detail-sidebar-media {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--color-gray-900);
}

.course-detail-sidebar-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-detail-sidebar-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
}

.course-detail-sidebar-body {
    padding: var(--spacing-lg);
}

.public-course-detail-sidebar-wrap {
    min-width: 0;
}

.public-course-detail-sidebar {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.public-course-detail-sidebar .course-detail-sidebar-body {
    padding: var(--spacing-xl);
}

/* Public Community Detail (public view only) */
.public-community-detail-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-2xl);
}

.public-community-detail-hero {
    padding: var(--spacing-md) 0 var(--spacing-sm);
}

.public-community-detail-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.public-community-detail-back:hover {
    color: var(--color-primary);
}

.public-community-detail-back i {
    font-size: var(--font-size-lg);
}

.public-community-detail-hero-card.community-header-modern {
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.public-community-detail-hero-card .community-header-title,
.public-community-detail-hero-card .community-header-stats,
.public-community-detail-hero-card .community-stat-item {
    color: var(--text-primary);
}

.public-community-detail-hero-card .community-header-stats {
    color: var(--text-secondary);
}

@media (max-width: 640px) {
    .public-community-detail-wrap {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }
}

@media (max-width: 640px) {
    .public-course-detail-wrap {
        padding: 0 var(--spacing-md) var(--spacing-xl);
    }

    .public-course-detail-title {
        font-size: var(--font-size-2xl);
    }
}

@media (max-width: 968px) {
    .public-communities-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .public-communities-filters-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .public-communities-search {
        max-width: none;
    }
}

@media (max-width: 640px) {
    .public-communities-wrap {
        padding: 0 var(--spacing-md);
    }

    .public-communities-hero {
        padding: var(--spacing-lg) 0;
        margin-bottom: var(--spacing-lg);
    }

    .public-communities-header {
        margin-bottom: var(--spacing-md);
    }

    .public-communities-title {
        font-size: var(--font-size-xl);
    }

    .public-communities-subtitle {
        font-size: var(--font-size-xs);
    }

    .public-communities-filters {
        margin-top: var(--spacing-md);
    }

    .public-communities-filters-inner {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .public-communities-search {
        min-width: 100%;
        max-width: 100%;
    }

    .public-communities-grid {
        grid-template-columns: 1fr;
    }

    .public-community-banner {
        height: 100px;
    }
}

/* ============================================
   Communities (logged-in) filters
   ============================================ */

.communities-filters-section {
    margin-bottom: var(--spacing-xl);
}

.communities-filters-section .card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    box-shadow: none;
}

@media (max-width: 640px) {
    .communities-filters-section .flex.flex-wrap.items-center {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: var(--spacing-xs);
    }

    .communities-filters-section .flex.flex-wrap.items-center::-webkit-scrollbar {
        display: none;
    }

    .communities-filters-section .filter-pill {
        flex-shrink: 0;
    }

    .public-communities-pills {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: var(--spacing-xs);
    }

    .public-communities-pills::-webkit-scrollbar {
        display: none;
    }

    .public-communities-pill {
        flex-shrink: 0;
    }
}

.communities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.community-discovery-card {
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow-sm);
}

.community-discovery-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.community-discovery-card:hover .community-icon-large {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.community-card-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    height: 140px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.community-card-banner[style*="background-image"] {
    background-color: var(--color-primary);
}

.community-card-banner-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(79, 70, 229, 0.2) 100%);
    z-index: 1;
}

.community-card-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.05) 100%);
    opacity: 0.6;
    z-index: 1;
}

.community-card-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    font-size: var(--font-size-base);
    color: white;
    z-index: 20;
}

.community-card-badge-course {
    background: rgba(59, 130, 246, 0.9);
}

.community-card-badge-private {
    background: rgba(245, 158, 11, 0.9);
    top: calc(var(--spacing-md) + 40px);
}

.community-card-content {
    padding: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: var(--spacing-md);
}

.community-card-header {
    margin-top: calc(var(--spacing-xl) * -1);
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    position: relative;
    z-index: 2;
}

.community-icon-large {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
    transition: all var(--transition-base);
    border: 4px solid var(--bg-primary);
    flex-shrink: 0;
}

.community-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.community-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.community-card-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
    min-height: 40px;
}

.community-card-footer {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.community-card-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.community-card-stat {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
}

.community-card-stat i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.community-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.community-status-badge i {
    font-size: var(--font-size-xs);
}

.community-status-badge-joined {
    color: var(--color-success-dark);
    background: var(--color-success-bg);
    border: 1px solid var(--color-success-light);
}

.community-status-badge-explore {
    color: var(--color-primary);
    background: var(--color-primary-bg);
    border: 1px solid var(--color-primary-light);
}

.community-discovery-card:hover .community-status-badge-explore {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateX(2px);
}

/* Responsive Communities Grid */
@media (max-width: 968px) {
    .communities-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .community-icon-large {
        width: 72px;
        height: 72px;
        font-size: var(--font-size-2xl);
    }
    
    .community-card-banner {
        height: 120px;
    }
}

@media (max-width: 640px) {
    .communities-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-card-content {
        padding: var(--spacing-lg);
        padding-top: var(--spacing-md);
    }
    
    .community-card-banner {
        height: 100px;
    }
    
    .community-card-badge {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-sm);
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .community-card-badge-private {
        top: calc(var(--spacing-sm) + 36px);
    }
    
    .community-card-title {
        font-size: var(--font-size-lg);
    }
    
    .community-card-description {
        font-size: var(--font-size-xs);
        min-height: 36px;
    }
    
    .community-icon-large {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-xl);
        border-width: 3px;
    }
    
    .community-card-stats {
        gap: var(--spacing-md);
    }
    
    .community-card-stat {
        font-size: var(--font-size-xs);
    }
    
    .community-status-badge {
        font-size: var(--font-size-xs);
        padding: calc(var(--spacing-xs) * 0.75) var(--spacing-sm);
    }
}

@media (max-width: 375px) {
    .community-card-banner {
        height: 90px;
    }
    
    .community-icon-large {
        width: 56px;
        height: 56px;
        font-size: var(--font-size-lg);
    }
    
    .community-card-content {
        padding: var(--spacing-md);
        padding-top: var(--spacing-sm);
    }
}

@media (max-width: 375px) {
    .communities-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .communities-filters-section {
        margin-bottom: var(--spacing-lg);
    }
    
    .communities-filters-section .card {
        padding: var(--spacing-md);
    }
    
    .filter-pill {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .filter-pill i {
        font-size: var(--font-size-xs);
    }
    
    .search-box-modern {
        width: 100%;
    }
    
    .community-card-content {
        padding: var(--spacing-md);
        padding-top: var(--spacing-sm);
    }
    
    .community-card-banner {
        height: 80px;
    }
    
    .community-card-header {
        margin-top: calc(var(--spacing-md) * -1);
    }
    
    .community-icon-large {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
        border-width: 3px;
    }
    
    .community-card-title {
        font-size: var(--font-size-base);
    }
    
    .community-card-description {
        font-size: var(--font-size-xs);
        -webkit-line-clamp: 3;
        min-height: auto;
    }
    
    .community-card-footer {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
        padding-top: var(--spacing-md);
    }
    
    .member-stat,
    .post-stat {
        font-size: var(--font-size-xs);
    }
    
    .community-status-badge {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }
}

/* ============================================
   Announcements Page Styles
   ============================================ */

.announcement-card {
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.announcement-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.announcement-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.announcement-card:hover::before {
    opacity: 1;
}

.announcement-card h3 {
    transition: color 0.2s ease;
}

.announcement-card:hover h3 {
    color: var(--color-primary);
}

/* ============================================
   Community Detail Page Styles
   ============================================ */

/* Community Header Modern */
.community-header-modern {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.community-header-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    pointer-events: none;
}

.community-header-content {
    padding: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.community-header-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.community-header-info {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.community-avatar-modern {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-xl);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.community-header-text {
    flex: 1;
    min-width: 0;
}

.community-header-title-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
}

.community-header-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: white;
    word-wrap: break-word;
    overflow-wrap: break-word;
    margin: 0;
}

.community-privacy-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.community-course-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.community-course-link a {
    color: white;
    text-decoration: underline;
    transition: opacity var(--transition-fast);
}

.community-course-link a:hover {
    opacity: 0.8;
}

.community-header-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.community-stat-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.community-header-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.inline-form {
    display: inline-block;
}

.community-detail-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.community-detail-main {
    min-width: 0; /* Prevent grid overflow */
}

.community-detail-sidebar {
    min-width: 0; /* Prevent grid overflow */
}

/* Community New Post Card */
.community-new-post-card {
    background: var(--bg-primary);
    border: 2px dashed var(--color-gray-200);
    transition: all var(--transition-base);
}

.community-new-post-card:hover {
    border-color: var(--color-primary-light);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md);
}

.community-new-post-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
}

.community-new-post-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.community-new-post-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.community-new-post-input {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 0;
}

.community-new-post-input:hover {
    background: var(--color-gray-50);
    border-color: var(--color-primary-light);
    color: var(--text-primary);
}

.community-new-post-input i {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
}

.feed-header {
    margin-bottom: var(--spacing-lg);
}

.feed-sort-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: color var(--transition-fast);
}

.feed-sort-btn:hover {
    color: var(--color-primary);
}

.feed-sort-btn-active {
    color: var(--color-primary);
}

.community-post-list {
    min-width: 0; /* Prevent overflow */
}

/* Community Post Card */
.community-post-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    overflow: hidden;
}

.community-post-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.community-post-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
}

.community-post-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.community-post-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.community-post-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.community-post-author-info {
    flex: 1;
    min-width: 0;
}

.community-post-author-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.community-post-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.community-post-pinned {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.community-post-body {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.community-post-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.community-post-content {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.community-post-content .community-post-md-h1,
.community-post-content .community-post-md-h2,
.community-post-content .community-post-md-h3 {
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
    margin: 0.5em 0 0.25em;
    line-height: 1.3;
}

.community-post-content .community-post-md-h1 { font-size: 1.25em; }
.community-post-content .community-post-md-h2 { font-size: 1.1em; }
.community-post-content .community-post-md-h3 { font-size: 1em; }

.community-post-content strong { font-weight: var(--font-weight-bold); color: var(--text-primary); }
.community-post-content em { font-style: italic; }

.community-post-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    background: var(--bg-secondary);
}

.community-post-stats {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.community-post-stat {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.community-post-action {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    transition: transform var(--transition-fast);
}

.community-post-card:hover .community-post-action {
    transform: translateX(4px);
}

/* Community Sidebar Cards */
.community-sidebar-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.community-sidebar-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.community-sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
}

.community-sidebar-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.community-sidebar-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.community-sidebar-content {
    padding: var(--spacing-lg);
}

.community-sidebar-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.community-sidebar-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.community-sidebar-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.community-sidebar-stat:hover {
    background: var(--color-gray-50);
    transform: translateY(-2px);
}

.community-sidebar-stat-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-base);
    flex-shrink: 0;
}

.community-sidebar-stat-info {
    flex: 1;
    min-width: 0;
}

.community-sidebar-stat-value {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.community-sidebar-stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.community-sidebar-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.community-rules-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.community-rule-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.community-rule-item:hover {
    background: var(--color-gray-50);
    transform: translateX(4px);
}

.community-rule-item:last-child {
    margin-bottom: 0;
}

.community-rule-number {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.community-rule-text {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Responsive Community Detail */
@media (max-width: 968px) {
    .community-detail-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-detail-sidebar {
        order: -1; /* Sidebar appears first on mobile */
    }
    
    .community-header-content {
        padding: var(--spacing-xl);
    }
    
    .community-header-title {
        font-size: var(--font-size-3xl);
    }
    
    .community-header-main {
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .community-header-content {
        padding: var(--spacing-lg);
    }
    
    .community-header-title {
        font-size: var(--font-size-2xl);
    }
    
    .community-avatar-modern {
        width: 80px;
        height: 80px;
        font-size: var(--font-size-3xl);
    }
    
    .community-header-actions {
        width: 100%;
    }
    
    .community-header-actions .btn {
        flex: 1;
        justify-content: center;
    }
    
    .feed-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .community-sidebar-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 375px) {
    .community-header-content {
        padding: var(--spacing-md);
    }
    
    .community-header-title {
        font-size: var(--font-size-xl);
    }
    
    .community-course-link {
        font-size: var(--font-size-xs);
    }
    
    .community-avatar-modern {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-2xl);
    }
    
    .community-detail-layout {
        gap: var(--spacing-md);
    }
    
    .community-post-title {
        font-size: var(--font-size-base);
    }
    
    .community-post-content {
        font-size: var(--font-size-xs);
    }
    
    .community-sidebar-title {
        font-size: var(--font-size-sm);
    }
    
    .community-sidebar-description {
        font-size: var(--font-size-xs);
    }
}

/* ============================================
   Community Create Post Page Styles
   ============================================ */

.create-post-page-header {
    margin-bottom: var(--spacing-xl);
}

.create-post-back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.create-post-back-link:hover {
    color: var(--color-primary);
}

.create-post-back-link i {
    font-size: var(--font-size-lg);
}

.create-post-header-text {
    margin-top: var(--spacing-xs);
}

.create-post-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.create-post-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.create-post-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--spacing-xl);
    align-items: start;
}

.create-post-main {
    min-width: 0;
}

.create-post-form-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.create-post-form-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.create-post-form-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.create-post-form-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.create-post-form-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.create-post-form-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.create-post-form {
    padding: var(--spacing-xl);
}

.create-post-field {
    margin-bottom: var(--spacing-xl);
}

.create-post-field:last-of-type {
    margin-bottom: var(--spacing-lg);
}

.create-post-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.create-post-required {
    color: var(--color-error);
}

.create-post-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.create-post-input::placeholder {
    color: var(--color-gray-400);
}

.create-post-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.create-post-textarea {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    resize: vertical;
    min-height: 280px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.create-post-textarea::placeholder {
    color: var(--color-gray-400);
}

.create-post-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.create-post-markdown-hint {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.create-post-markdown-hint i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
}

.create-post-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-100);
}

.create-post-sidebar {
    min-width: 0;
}

.create-post-sticky {
    position: sticky;
    top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.create-post-tips-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.create-post-tips-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.create-post-tips-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.create-post-tips-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.create-post-tips-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.create-post-tips-list {
    list-style: none;
    padding: var(--spacing-lg);
    margin: 0;
}

.create-post-tips-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

.create-post-tips-list li:not(:last-child) {
    border-bottom: 1px solid var(--color-gray-100);
}

.create-post-tips-list li i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
    flex-shrink: 0;
    margin-top: 2px;
}

.create-post-format-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.create-post-format-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.create-post-format-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.create-post-format-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.create-post-format-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.create-post-format-list {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.create-post-format-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) 0;
}

.create-post-format-item code {
    font-family: ui-monospace, monospace;
    font-size: 0.9em;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.create-post-format-preview {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.create-post-format-bold {
    font-weight: var(--font-weight-bold);
}

.create-post-format-italic {
    font-style: italic;
}

.create-post-format-link {
    color: var(--color-primary);
}

.create-post-format-quote {
    border-left: 3px solid var(--color-gray-300);
    padding-left: var(--spacing-sm);
    color: var(--text-secondary);
}

.create-post-format-code {
    font-family: ui-monospace, monospace;
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* Responsive: Create Post */
@media (max-width: 968px) {
    .create-post-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .create-post-sidebar {
        order: -1;
    }

    .create-post-sticky {
        position: static;
    }
}

@media (max-width: 640px) {
    .create-post-title {
        font-size: var(--font-size-2xl);
    }

    .create-post-form-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .create-post-form {
        padding: var(--spacing-lg);
    }

    .create-post-actions {
        flex-direction: column;
        width: 100%;
    }

    .create-post-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Community Post Detail Page Styles
   ============================================ */

.post-breadcrumbs {
    margin-bottom: var(--spacing-xl);
}

.community-post-layout {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.community-post-main {
    min-width: 0; /* Prevent grid overflow */
}

.community-post-sidebar {
    min-width: 0; /* Prevent grid overflow */
}

.post-meta-header {
    margin-bottom: var(--spacing-lg);
}

.post-author-name {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.post-meta {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.post-title {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.post-body-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

.post-body-content p {
    margin-bottom: var(--spacing-md);
}

.post-body-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.post-body-content a:hover {
    color: var(--color-primary-dark);
}

.post-body-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.post-actions {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
}

.post-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.replies-section {
    margin-top: var(--spacing-xl);
}

.replies-header {
    margin-bottom: var(--spacing-lg);
}

.replies-sort-active {
    cursor: pointer;
}

.comment-form-card {
    margin-bottom: var(--spacing-xl);
}

.comment-form {
    width: 100%;
}

.comment-textarea {
    resize: vertical;
    min-height: 100px;
}

.comment-list {
    min-width: 0; /* Prevent overflow */
}

.comment-item {
    margin-bottom: var(--spacing-md);
}

.comment-header {
    margin-bottom: var(--spacing-sm);
}

.comment-author {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.comment-date {
    white-space: nowrap;
}

.comment-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-relaxed);
}

.comment-content p {
    margin-bottom: var(--spacing-sm);
}

.comment-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.comment-content a:hover {
    color: var(--color-primary-dark);
}

.comment-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: var(--spacing-sm) 0;
}

.comment-delete-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.comment-actions {
    margin-top: var(--spacing-md);
}

.comment-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nested-replies {
    margin-left: var(--spacing-xl);
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    border-left: 2px solid var(--color-gray-50);
}

.post-sidebar-title {
    margin-bottom: var(--spacing-lg);
}

/* Responsive Community Post Layout */
@media (max-width: 968px) {
    .community-post-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .community-post-sidebar {
        order: -1; /* Sidebar appears first on mobile */
    }
    
    .post-title {
        font-size: var(--font-size-2xl);
    }
    
    .post-body-content {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 640px) {
    .post-title {
        font-size: var(--font-size-xl);
    }
    
    .post-body-content {
        font-size: var(--font-size-sm);
    }
    
    .comment-textarea {
        min-height: 80px;
    }
    
    .nested-replies {
        margin-left: var(--spacing-md);
        padding-left: var(--spacing-md);
    }
}

@media (max-width: 375px) {
    .post-breadcrumbs {
        margin-bottom: var(--spacing-lg);
        font-size: var(--font-size-xs);
    }
    
    .community-post-layout {
        gap: var(--spacing-md);
    }
    
    .post-detail-card {
        padding: var(--spacing-lg);
    }
    
    .post-title {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-md);
    }
    
    .post-body-content {
        font-size: var(--font-size-sm);
        line-height: var(--line-height-normal);
    }
    
    .post-meta-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .post-actions {
        gap: var(--spacing-md);
    }
    
    .replies-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .comment-form-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .comment-textarea {
        min-height: 70px;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .comment-form .btn {
        width: 100%;
    }
    
    .comment-item {
        margin-bottom: var(--spacing-sm);
    }
    
    .reply-block {
        padding: var(--spacing-md);
    }
    
    .comment-content {
        font-size: var(--font-size-xs);
    }
    
    .comment-actions {
        gap: var(--spacing-sm);
    }
    
    .nested-replies {
        margin-left: var(--spacing-sm);
        padding-left: var(--spacing-sm);
    }
    
    .nested-replies .reply-block {
        padding: var(--spacing-sm);
    }
}

/* ============================================
   Notifications Page Styles
   ============================================ */

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state-action {
    margin-top: var(--spacing-md);
}

/* Notification Error Message (CSS-only toast) */
.notification-error-message {
    margin-bottom: var(--spacing-lg);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.notification-error-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-error-bg);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-lg);
    color: var(--color-error);
    flex-wrap: wrap;
}

.notification-error-content i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.notification-error-text {
    flex: 1;
    font-weight: var(--font-weight-medium);
    min-width: 0;
}

.notification-error-close {
    background: none;
    border: none;
    color: var(--color-error);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
    flex-shrink: 0;
}

.notification-error-close:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* Notification List */
.notification-list {
    min-width: 0;
}

.notification-item {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    min-width: 0;
    position: relative;
    overflow: hidden;
}

.notification-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.notification-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.02) 0%, rgba(99, 102, 241, 0.01) 100%);
}

.notification-item:hover::before {
    opacity: 1;
}

.notification-unread {
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.notification-read {
    opacity: 0.75;
}

.notification-item-content {
    min-width: 0;
}

.notification-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.notification-icon-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.notification-icon-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.notification-icon-error {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.notification-icon-info {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.notification-content {
    min-width: 0;
}

.notification-header {
    margin-bottom: var(--spacing-xs);
}

.notification-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.notification-title-unread {
    color: var(--color-gray-900);
}

.notification-title-read {
    color: var(--color-gray-700);
}

.notification-timestamp {
    white-space: nowrap;
    flex-shrink: 0;
}

.notification-message {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
    margin-bottom: var(--spacing-md);
}

.notification-actions {
    margin-top: var(--spacing-sm);
}

.min-width-0 {
    min-width: 0;
}

/* Responsive Notifications */
@media (max-width: 640px) {
    .notification-item-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .notification-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .notification-title {
        font-size: var(--font-size-sm);
    }
    
    .notification-message {
        font-size: var(--font-size-xs);
    }
    
    .notification-actions {
        width: 100%;
    }
    
    .notification-actions .btn {
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 375px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .page-header-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .page-header-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-error-content {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-sm);
    }
    
    .notification-error-text {
        width: 100%;
    }
    
    .notification-error-content .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-item {
        padding: var(--spacing-md);
    }
    
    .notification-icon {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }
    
    .notification-title {
        font-size: var(--font-size-sm);
    }
    
    .notification-message {
        font-size: var(--font-size-xs);
        margin-bottom: var(--spacing-sm);
    }
    
    .notification-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .notification-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-timestamp {
        font-size: var(--font-size-2xs);
    }
}

/* ============================================
   Status Pills
   ============================================ */

.status-pill {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: capitalize;
    white-space: nowrap;
}

.status-pill-success {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.status-pill-info {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.status-pill-warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.status-pill-error {
    background: var(--color-error-bg);
    color: var(--color-error);
}

/* ============================================
   Assignments Page Styles
   ============================================ */

/* Assignment Layout - Better space utilization */
.assignment-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 100%;
}

.assignment-main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    min-width: 0;
}

.assignment-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    min-width: 0;
}

@media (min-width: 1400px) {
    .assignment-layout {
        grid-template-columns: 1fr 360px;
    }
}

@media (max-width: 1024px) {
    .assignment-layout {
        grid-template-columns: 1fr;
    }
    
    .assignment-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .assignment-sidebar {
        grid-template-columns: 1fr;
    }
}

.assignment-list {
    min-width: 0;
}

.assignment-item {
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.assignment-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-primary);
}

.assignment-item-content {
    min-width: 0;
}

.assignment-content {
    min-width: 0;
    flex: 1;
}

.assignment-title-section {
    min-width: 0;
}

.assignment-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.assignment-course {
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.assignment-header {
    margin-bottom: var(--spacing-xs);
}

.assignment-meta {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.assignment-due-date,
.assignment-submitted,
.assignment-grade {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.assignment-due-date i,
.assignment-submitted i {
    font-size: var(--font-size-sm);
}

.assignment-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-sm);
}

/* Responsive Assignments */
@media (max-width: 640px) {
    .assignment-item-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .assignment-actions {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .assignment-title {
        font-size: var(--font-size-sm);
    }
    
    .assignment-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 375px) {
    .assignment-item {
        padding: var(--spacing-md);
    }
    
    .assignment-title {
        font-size: var(--font-size-sm);
    }
    
    .assignment-course {
        font-size: var(--font-size-xs);
    }
    
    .assignment-meta {
        font-size: var(--font-size-xs);
    }
    
    .assignment-due-date,
    .assignment-submitted,
    .assignment-grade {
        font-size: var(--font-size-xs);
    }
    
    .assignment-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    
    .assignment-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .status-pill {
        font-size: var(--font-size-2xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   Quizzes Page Styles
   ============================================ */

.quiz-list {
    min-width: 0;
}

.quiz-item {
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.quiz-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--color-primary);
}

.quiz-item-content {
    min-width: 0;
}

.quiz-content {
    min-width: 0;
    flex: 1;
}

.quiz-title-section {
    min-width: 0;
}

.quiz-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
}

.quiz-course {
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quiz-header {
    margin-bottom: var(--spacing-xs);
}

.quiz-meta {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.quiz-completed,
.quiz-time,
.quiz-score {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.quiz-completed i,
.quiz-time i {
    font-size: var(--font-size-sm);
}

.quiz-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-sm);
}

/* Responsive Quizzes */
@media (max-width: 640px) {
    .quiz-item-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .quiz-actions {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .quiz-title {
        font-size: var(--font-size-sm);
    }
    
    .quiz-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 375px) {
    .quiz-item {
        padding: var(--spacing-md);
    }
    
    .quiz-title {
        font-size: var(--font-size-sm);
    }
    
    .quiz-course {
        font-size: var(--font-size-xs);
    }
    
    .quiz-meta {
        font-size: var(--font-size-xs);
    }
    
    .quiz-completed,
    .quiz-time,
    .quiz-score {
        font-size: var(--font-size-xs);
    }
    
    .quiz-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    
    .quiz-actions .btn {
        width: 100%;
        justify-content: center;
    }
    
    .status-pill {
        font-size: var(--font-size-2xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   Certificates Page Styles
   ============================================ */

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    min-width: 0;
}

.certificate-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    position: relative;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.certificate-card:hover::before {
    opacity: 1;
}

.certificate-card-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
    padding: var(--spacing-xl);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.certificate-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 4px solid white;
}

.certificate-card:hover .certificate-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.certificate-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 32px;
    height: 32px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.certificate-card-body {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.certificate-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-md) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    min-height: 2.5em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.certificate-meta {
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.certificate-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.certificate-date i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.certificate-card-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
}

.certificate-card-footer .btn {
    flex: 1;
    justify-content: center;
}

/* Responsive Certificates */
@media (max-width: 968px) {
    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .certificate-card {
        padding: var(--spacing-md);
    }
    
    .certificate-title {
        font-size: var(--font-size-sm);
        min-height: 2em;
    }
    
    .certificate-date {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 375px) {
    .certificate-card {
        padding: var(--spacing-md);
    }
    
    .certificate-icon {
        width: 56px;
        height: 56px;
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .certificate-title {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .certificate-meta {
        margin-bottom: var(--spacing-sm);
    }
    
    .certificate-date {
        font-size: var(--font-size-xs);
    }
    
    .certificate-actions {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

/* ============================================
   CERTIFICATE VIEW (single certificate page)
   ============================================ */

.certificate-page {
    padding-bottom: 0;
}

.certificate-page-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
    justify-content: center;
}

.certificate-page-header > div {
    text-align: center;
}

.certificate-breadcrumb {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.certificate-breadcrumb-sep {
    margin: 0 var(--spacing-xs);
    color: var(--color-gray-400);
}

.certificate-page-title {
    margin-bottom: var(--spacing-xs);
}

.certificate-page-subtitle {
    margin: 0;
}

/* Wrapper: max-width, center, padding for certificate + actions bar */
.certificate-wrapper {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    padding-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .certificate-wrapper {
        padding-left: var(--spacing-xl);
        padding-right: var(--spacing-xl);
    }
}

/* Certificate card: border, shadow, no overflow */
.certificate-container {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    overflow: visible;
    position: relative;
}

/* Thin gold border + inner shadow */
.certificate-border {
    border: 2px solid #c9a227;
    border-radius: var(--radius-lg);
    margin: var(--spacing-md);
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    position: relative;
    background: #fff;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

/* Document title: strong hierarchy */
.certificate-doc-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    text-align: center;
    color: var(--color-gray-700);
    margin: 0 0 var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

/* Body: vertical rhythm */
.certificate-body {
    position: relative;
    z-index: 1;
    text-align: center;
}

.certificate-intro {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-sm);
    letter-spacing: 0.02em;
}

.certificate-recipient {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs);
    line-height: 1.2;
}

.certificate-completed {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-lg);
}

/* Course: highlight style (not link blue) */
.certificate-course-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    border-bottom: 3px solid #c9a227;
}

.certificate-course-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-gray-800);
    letter-spacing: 0.01em;
}

.certificate-date {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* 3-column signatures + seal */
.certificate-signatures-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: end;
    gap: var(--spacing-lg);
    max-width: 560px;
    margin: 0 auto var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.certificate-signature-block {
    min-width: 0;
}

.certificate-signature-line {
    width: 100%;
    max-width: 140px;
    height: 1px;
    background: var(--color-gray-400);
    margin-bottom: var(--spacing-sm);
}

.certificate-signature-left .certificate-signature-line {
    margin-right: auto;
    margin-left: 0;
}

.certificate-signature-right .certificate-signature-line {
    margin-left: auto;
    margin-right: 0;
}

.certificate-signature-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-800);
}

.certificate-signature-sublabel {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.certificate-seal-block {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.certificate-seal {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #c9a227, #e6c04a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: #fff;
    box-shadow: 0 2px 12px rgba(201, 162, 39, 0.35);
}

/* Metadata row: ID left, Verify card right */
.certificate-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.certificate-id-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.certificate-id-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-gray-400);
}

.certificate-id-value {
    font-size: var(--font-size-sm);
    font-family: ui-monospace, monospace;
    color: var(--color-gray-600);
}

.certificate-verify-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    width: 72px;
    height: 72px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
}

.certificate-verify-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.certificate-verify-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
}

/* Actions bar – inside content area, below certificate */
.certificate-actions-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.certificate-actions-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

@media (max-width: 767px) {
    .certificate-signatures-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }
    .certificate-signature-line {
        margin-left: auto;
        margin-right: auto;
    }
    .certificate-seal-block {
        order: -1;
    }
    .certificate-actions-bar {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}

/* Print: hide chrome, clean certificate, A4/Letter */
@media print {
    .no-print,
    .certificate-actions-bar,
    .certificate-page-header,
    .certificate-breadcrumb,
    header,
    footer,
    .sidebar,
    nav[role="navigation"] {
        display: none !important;
    }
    .certificate-page,
    .certificate-wrapper,
    .page-container {
        padding: 0 !important;
        margin: 0 !important;
        max-width: none !important;
    }
    .certificate-container {
        box-shadow: none !important;
        max-width: none !important;
    }
    .certificate-border {
        border: 2px solid #c9a227 !important;
        box-shadow: none !important;
        margin: 0 !important;
        padding: var(--spacing-xl) !important;
    }
    body {
        background: #fff !important;
    }
    .certificate-wrapper {
        padding-bottom: 0 !important;
    }
    .certificate-container,
    .certificate-border,
    .certificate-body,
    .certificate-signatures-grid,
    .certificate-meta-row,
    .certificate-doc-title {
        break-inside: avoid;
    }
    .certificate-doc-title {
        color: #374151 !important;
        border-bottom-color: #e5e7eb !important;
    }
    .certificate-recipient { color: #111827 !important; }
    .certificate-intro,
    .certificate-completed,
    .certificate-date { color: #4b5563 !important; }
    .certificate-course-name { color: #1f2937 !important; }
    .certificate-course-block {
        background: #f9fafb !important;
        border-bottom-color: #c9a227 !important;
    }
    .certificate-signature-label { color: #1f2937 !important; }
    .certificate-signature-sublabel { color: #6b7280 !important; }
    .certificate-meta-row { border-top-color: #e5e7eb !important; }
    .certificate-id-label,
    .certificate-id-value,
    .certificate-verify-label { color: #6b7280 !important; }
    .certificate-verify-card {
        background: #f3f4f6 !important;
        border-color: #d1d5db !important;
    }
    @page {
        size: A4;
        margin: 12mm;
    }
}

/* ============================================
   BADGES GRID & CARDS
   ============================================ */

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    min-width: 0;
}

.badge-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    position: relative;
    background: white;
}

.badge-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.badge-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.badge-card:hover::before {
    opacity: 1;
}

.badge-card-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(99, 102, 241, 0.03) 100%);
    padding: var(--spacing-xl);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 160px;
}

.badge-icon-large {
    width: 96px;
    height: 96px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-5xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 4px solid white;
    position: relative;
}

.badge-card:hover .badge-icon-large {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.badge-verified-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

.badge-card-body {
    padding: var(--spacing-xl);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.badge-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
}

.badge-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
    flex-grow: 1;
}

.badge-card-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
    display: flex;
    justify-content: center;
    align-items: center;
}

.badge-earned-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.badge-earned-date i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.badge-count-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.badge-count-badge i {
    font-size: var(--font-size-base);
}

/* Responsive Badges */
@media (max-width: 968px) {
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .badges-grid {
        grid-template-columns: 1fr;
    }
    
    .badge-card-header {
        min-height: 140px;
        padding: var(--spacing-lg);
    }
    
    .badge-icon-large {
        width: 80px;
        height: 80px;
        font-size: var(--font-size-4xl);
    }
    
    .badge-name {
        font-size: var(--font-size-base);
    }
    
    .badge-description {
        font-size: var(--font-size-xs);
    }
    
    .badge-earned-date {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 375px) {
    .badge-card-header {
        min-height: 120px;
        padding: var(--spacing-md);
    }
    
    .badge-icon-large {
        width: 64px;
        height: 64px;
        font-size: var(--font-size-3xl);
    }
    
    .badge-card-body {
        padding: var(--spacing-md);
    }
    
    .badge-name {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .badge-description {
        font-size: var(--font-size-xs);
    }
    
    .badge-card-footer {
        padding: var(--spacing-md);
    }
    
    .badge-earned-date {
        font-size: var(--font-size-xs);
    }
}

    
    .certificate-actions .btn {
        width: 100%;
    }
}

/* ============================================
   Wishlist/Notes/Bookmarks Common Styles
   ============================================ */

/* Course Card Clickable */
.course-card-clickable {
    cursor: pointer;
}

.course-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

/* Notes / Bookmarks listing pages */
.notes-list,
.bookmarks-list {
    display: grid;
    gap: var(--spacing-lg);
}

.bookmarks-section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-800);
    margin: 0 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.bookmarks-section-title i {
    color: var(--color-primary);
}

/* ============================================
   Bookmarks page (SaaS-style)
   ============================================ */

.bookmarks-page {
    padding-bottom: var(--spacing-xl);
}

.bookmarks-page-header {
    margin-bottom: var(--spacing-lg);
}

.bookmarks-filter-tabs {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--color-gray-100);
    padding: 2px;
    border-radius: var(--radius-md);
}

.bookmarks-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.bookmarks-tab:hover {
    color: var(--color-gray-800);
}

.bookmarks-tab.active {
    color: var(--color-gray-900);
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.bookmarks-section {
    margin-bottom: var(--spacing-2xl);
}

.bookmarks-section-heading {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
    margin: 0 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.bookmarks-section-heading i {
    color: var(--color-primary);
    font-size: 1.1em;
}

.bookmarks-section-count {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.bookmarks-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .bookmarks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .bookmarks-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.bookmark-card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-width: 0;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.bookmark-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

.bookmark-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-sm);
    min-width: 0;
}

.bookmark-card-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: var(--line-height-tight);
    flex: 1;
    min-width: 0;
}

.bookmark-card-title a {
    color: inherit;
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.bookmark-card-title a:hover {
    color: var(--color-primary);
}

.bookmark-card-menu {
    flex-shrink: 0;
}

.bookmark-card-menu-btn {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--color-gray-500);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.bookmark-card-menu-btn:hover {
    color: var(--color-gray-700);
    background: var(--color-gray-200);
}

.bookmark-card-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    line-height: 1.4;
}

.bookmark-card-meta-item {
    display: inline;
}

.bookmark-card-meta-reply {
    font-style: italic;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

.bookmark-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-top: auto;
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--color-gray-200);
}

.bookmark-card-time {
    font-size: 0.7rem;
    color: var(--color-gray-400);
}

.bookmarks-section-empty {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
}

.bookmarks-section-empty p {
    margin: 0 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.empty-state-bookmarks {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.empty-state-bookmarks .empty-state-icon {
    color: var(--color-primary);
}

.empty-state-bookmarks .empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
}

.empty-state-bookmarks .empty-state-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.empty-state-bookmarks .empty-state-action {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

/* Remove bookmark dialog */
.bookmark-remove-dialog {
    padding: 0;
    margin: auto;
    position: fixed;
    inset: 0;
    width: calc(100% - var(--spacing-xl));
    max-width: 360px;
    height: max-content;
    max-height: calc(100vh - 2 * var(--spacing-xl));
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    background: #fff;
}

.bookmark-remove-dialog::backdrop {
    background: rgba(0, 0, 0, 0.4);
}

.bookmark-remove-dialog-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-lg) 0;
}

.bookmark-remove-dialog-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-lg);
    padding: 0 var(--spacing-lg);
}

.bookmark-remove-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

[data-theme="dark"] .bookmarks-filter-tabs {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .bookmarks-tab.active {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .bookmark-card {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .bookmark-card-title,
[data-theme="dark"] .bookmark-card-title a {
    color: var(--text-primary);
}

[data-theme="dark"] .bookmark-card-meta,
[data-theme="dark"] .bookmark-card-time {
    color: var(--text-secondary);
}

[data-theme="dark"] .bookmark-card-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .bookmarks-section-empty {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .bookmarks-section-empty p {
    color: var(--text-secondary);
}

[data-theme="dark"] .bookmark-remove-dialog {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

/* ============================================
   Notes page (SaaS-style)
   ============================================ */
.notes-page-header {
    margin-bottom: var(--spacing-lg);
}

.notes-page-header .page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.notes-search-input {
    min-width: 200px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-white);
    color: var(--color-gray-900);
}

.notes-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb, 99, 102, 241), 0.2);
}

.notes-sort-select {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-white);
    color: var(--color-gray-700);
}

.notes-section {
    margin-bottom: var(--spacing-2xl);
}

.notes-section-heading {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
    margin: 0 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.notes-section-heading i {
    color: var(--color-primary);
    font-size: 1.1em;
}

.notes-section-count {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.notes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .notes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .notes-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.note-card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.note-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

.note-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.note-card-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
    margin: 0;
    line-height: 1.3;
    flex: 1;
    min-width: 0;
}

.note-card-title a {
    color: inherit;
    text-decoration: none;
}

.note-card-title a:hover {
    color: var(--color-primary);
}

.note-card-menu {
    position: relative;
    flex-shrink: 0;
}

.note-card-menu-btn {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
    cursor: pointer;
    padding: 0;
}

.note-card-menu-btn:hover {
    color: var(--color-gray-700);
    background: var(--color-gray-200);
}

.note-card-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 2px;
    min-width: 160px;
    background: var(--bg-secondary, var(--color-gray-50, #f9fafb));
    border: 1px solid var(--border-color, var(--color-gray-200));
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: 50;
    display: none;
}

.note-card-dropdown.is-open {
    display: block;
}

.note-card-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    text-decoration: none;
}

.note-card-dropdown-item:hover {
    background: var(--color-gray-100);
}

.note-card-dropdown-item i {
    font-size: 1rem;
    color: var(--color-gray-500);
}

.note-card-dropdown-delete {
    color: var(--color-error);
}

.note-card-dropdown-delete:hover {
    background: rgba(220, 38, 38, 0.08);
}

.note-card-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    line-height: 1.4;
}

.note-card-preview {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    max-width: 100%;
}

.note-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-gray-200);
}

.note-card-time {
    font-size: 0.7rem;
    color: var(--color-gray-400);
}

.note-card-footer .btn {
    flex-shrink: 0;
}

.notes-no-results {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color-gray-50);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
}

.notes-no-results-text {
    margin: 0 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.empty-state-notes {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.empty-state-notes .empty-state-icon {
    color: var(--color-primary);
}

.empty-state-notes .empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.empty-state-notes .empty-state-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

/* Note delete confirmation dialog */
.note-delete-dialog {
    padding: 0;
    margin: auto;
    position: fixed;
    inset: 0;
    width: calc(100% - var(--spacing-xl));
    max-width: 400px;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    background: var(--color-white);
}

.note-delete-dialog::backdrop {
    background: rgba(0, 0, 0, 0.4);
}

.note-delete-dialog-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-lg) 0;
}

.note-delete-dialog-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-lg);
    padding: 0 var(--spacing-lg);
}

.note-delete-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* Dark mode - Notes page */
[data-theme="dark"] .notes-search-input,
[data-theme="dark"] .notes-sort-select {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .notes-section-heading {
    color: var(--text-primary);
}

[data-theme="dark"] .notes-section-count {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .note-card {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .note-card-title,
[data-theme="dark"] .note-card-title a {
    color: var(--text-primary);
}

[data-theme="dark"] .note-card-meta,
[data-theme="dark"] .note-card-time {
    color: var(--text-secondary);
}

[data-theme="dark"] .note-card-preview {
    color: var(--text-primary);
}

[data-theme="dark"] .note-card-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .note-card-dropdown {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .note-card-dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .note-card-dropdown-item:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .notes-no-results {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .notes-no-results-text {
    color: var(--text-secondary);
}

[data-theme="dark"] .note-delete-dialog {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .note-delete-dialog-title {
    color: var(--text-primary);
}

[data-theme="dark"] .note-delete-dialog-desc {
    color: var(--text-secondary);
}

@media (max-width: 767px) {
    .notes-page-header .page-header-actions {
        width: 100%;
    }
    .notes-search-input {
        flex: 1;
        min-width: 0;
    }
}

/* ============================================
   Wishlist page (SaaS-style)
   ============================================ */
.wishlist-page-header {
    margin-bottom: var(--spacing-lg);
}

.wishlist-page-header .page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.wishlist-search-input {
    min-width: 200px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--bg-secondary, var(--color-gray-50, #f9fafb));
    color: var(--color-gray-900);
}

.wishlist-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb, 99, 102, 241), 0.2);
}

.wishlist-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .wishlist-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .wishlist-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.wishlist-course-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary, var(--color-gray-50, #f9fafb));
    border: 1px solid var(--border-color, var(--color-gray-200));
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.wishlist-course-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-md);
}

.wishlist-card-media-wrap {
    position: relative;
    flex-shrink: 0;
}

.wishlist-course-card .course-card-media {
    display: block;
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-gray-200);
}

.wishlist-course-card .course-card-media-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wishlist-course-card .course-card-media-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-primary-light, #e0e7ff) 0%, var(--color-primary, #6366f1) 100%);
    color: white;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.wishlist-course-card .course-card-media-placeholder i {
    font-size: 2rem;
    opacity: 0.9;
}

.wishlist-card-menu {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    z-index: 10;
}

.wishlist-card-menu-btn {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--bg-secondary, rgba(255, 255, 255, 0.95));
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
    cursor: pointer;
    padding: 0;
    box-shadow: var(--shadow-sm);
}

.wishlist-card-menu-btn:hover {
    color: var(--color-gray-800);
    background: var(--bg-primary, #fff);
}

.wishlist-card-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 2px;
    min-width: 140px;
    background: var(--bg-secondary, var(--color-gray-50, #f9fafb));
    border: 1px solid var(--border-color, var(--color-gray-200));
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: 50;
    display: none;
}

.wishlist-card-dropdown.is-open {
    display: block;
}

.wishlist-card-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}

.wishlist-card-dropdown-item:hover {
    background: var(--color-gray-100);
}

.wishlist-card-dropdown-remove {
    color: var(--color-error);
}

.wishlist-card-dropdown-remove:hover {
    background: rgba(220, 38, 38, 0.08);
}

.wishlist-course-card .course-card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.wishlist-course-card .course-card-category-pill {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    background: var(--color-gray-100);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
    align-self: flex-start;
}

.wishlist-course-card .course-card-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.wishlist-course-card .course-card-title a {
    color: inherit;
    text-decoration: none;
}

.wishlist-course-card .course-card-title a:hover {
    color: var(--color-primary);
}

.wishlist-course-card .course-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-body);
    line-height: 1.45;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.wishlist-course-card .course-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-top: auto;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color, var(--color-gray-200));
}

.wishlist-course-card .course-card-price-wrap {
    flex-shrink: 0;
}

.wishlist-course-card .course-card-price {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

.wishlist-course-card .course-card-price-free {
    color: var(--color-success);
}

.wishlist-course-card .course-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.wishlist-no-results {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-tertiary, var(--color-gray-50));
    border: 1px dashed var(--border-color, var(--color-gray-300));
    border-radius: var(--radius-md);
}

.wishlist-no-results-text {
    margin: 0 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.empty-state-wishlist {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.empty-state-wishlist .empty-state-icon {
    color: var(--color-primary);
}

.empty-state-wishlist .empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.empty-state-wishlist .empty-state-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.wishlist-remove-dialog {
    padding: 0;
    margin: auto;
    position: fixed;
    inset: 0;
    width: calc(100% - var(--spacing-xl));
    max-width: 400px;
    border: 1px solid var(--border-color, var(--color-gray-200));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    background: var(--bg-secondary, #fff);
}

.wishlist-remove-dialog::backdrop {
    background: rgba(0, 0, 0, 0.4);
}

.wishlist-remove-dialog-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-lg) 0;
    color: var(--color-gray-900);
}

.wishlist-remove-dialog-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-lg);
    padding: 0 var(--spacing-lg);
}

.wishlist-remove-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

[data-theme="dark"] .wishlist-course-card {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .wishlist-course-card .course-card-category-pill {
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

[data-theme="dark"] .wishlist-course-card .course-card-title a,
[data-theme="dark"] .wishlist-course-card .course-card-desc {
    color: var(--text-primary);
}

[data-theme="dark"] .wishlist-course-card .course-card-desc {
    color: var(--text-secondary);
}

[data-theme="dark"] .wishlist-course-card .course-card-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .wishlist-card-dropdown {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .wishlist-card-dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .wishlist-card-dropdown-item:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .wishlist-remove-dialog {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .wishlist-remove-dialog-title {
    color: var(--text-primary);
}

[data-theme="dark"] .wishlist-remove-dialog-desc {
    color: var(--text-secondary);
}

@media (max-width: 767px) {
    .wishlist-page-header .page-header-actions {
        width: 100%;
    }
    .wishlist-search-input {
        flex: 1;
        min-width: 0;
    }
    .wishlist-course-card .course-card-actions {
        flex-direction: column;
    }
    .wishlist-course-card .course-card-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Notifications page – redesigned
   ============================================ */
.notifications-page {
    --notif-hero-bg: linear-gradient(135deg, var(--color-primary-bg, #eef2ff) 0%, rgba(129, 140, 248, 0.08) 100%);
    width: 100%;
}

.notifications-page .chart-card.notifications-list-card {
    width: 100%;
}

.notifications-hero {
    background: var(--notif-hero-bg);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.notifications-hero-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-lg);
}

.notifications-hero-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
}

.notifications-hero-text {
    flex: 1;
    min-width: 0;
}

.notifications-hero-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs);
}

.notifications-hero-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.notifications-hero-actions {
    flex-shrink: 0;
}

.notifications-toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.notifications-tabs {
    display: flex;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.8);
    padding: 4px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-gray-200);
}

.notifications-tab {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
    background: transparent;
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: all 0.2s ease;
}

.notifications-tab:hover {
    color: var(--color-gray-800);
    background: var(--color-gray-100);
}

.notifications-tab.active {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.notifications-mark-all {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s ease;
}

.notifications-mark-all:hover {
    background: var(--color-gray-50);
    border-color: var(--color-primary-light);
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .notifications-hero-inner {
        flex-direction: column;
        align-items: stretch;
    }
    .notifications-hero-icon {
        align-self: flex-start;
    }
    .notifications-hero-actions {
        width: 100%;
    }
    .notifications-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .notifications-tabs {
        justify-content: center;
    }
}

[data-theme="dark"] .notifications-hero {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(99, 102, 241, 0.04) 100%);
    border-color: var(--border-color);
}

[data-theme="dark"] .notifications-tabs {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .notifications-tab {
    color: var(--text-secondary);
}

[data-theme="dark"] .notifications-tab:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

[data-theme="dark"] .notifications-mark-all {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .notifications-mark-all:hover {
    background: var(--bg-tertiary);
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.notifications-list-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    width: 100%;
}

.notifications-page .chart-body-notifications,
.notifications-page .notif-list,
.notifications-page .notif-group,
.notifications-page .notif-group-list {
    width: 100%;
}

.notifications-page .notif-item {
    width: 100%;
    box-sizing: border-box;
}

.notif-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.notif-group {
    margin-bottom: 0;
}

.notif-group-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    margin: 0 0 var(--spacing-sm);
    padding: 0 var(--spacing-xs);
}

.notif-group-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.notif-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    border-left: 3px solid transparent;
    margin-bottom: var(--spacing-xs);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.notif-item:hover {
    background: var(--color-gray-50);
}

.notif-item-unread {
    background: var(--color-primary-light, rgba(99, 102, 241, 0.08));
    border-left-color: var(--color-primary);
}

.notif-item-unread:hover {
    background: var(--color-primary-light, rgba(99, 102, 241, 0.12));
}

.notif-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.1rem;
}

.notif-icon-info { background: var(--color-gray-100); color: var(--color-gray-600); }
.notif-icon-success { background: rgba(34, 197, 94, 0.12); color: var(--color-success); }
.notif-icon-warning { background: rgba(245, 158, 11, 0.12); color: var(--color-warning, #d97706); }
.notif-icon-error { background: rgba(239, 68, 68, 0.12); color: var(--color-error); }
.notif-icon-achievement { background: rgba(99, 102, 241, 0.12); color: var(--color-primary); }
.notif-icon-reminder { background: var(--color-gray-100); color: var(--color-gray-600); }
.notif-icon-announcement { background: rgba(99, 102, 241, 0.12); color: var(--color-primary); }

.notif-content {
    flex: 1;
    min-width: 0;
}

.notif-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-bottom: 2px;
}

.notif-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-900);
    line-height: 1.35;
}

.notif-item-unread .notif-title {
    font-weight: var(--font-weight-semibold);
}

.notif-time {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    flex-shrink: 0;
}

.notif-message {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
    margin: 0 0 var(--spacing-sm);
    white-space: pre-wrap;
    word-break: break-word;
}

.notif-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.notif-type-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    background: var(--color-gray-100);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.notif-mark-read {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 2px;
}

.notif-mark-read:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.notif-error-toast {
    margin-bottom: var(--spacing-md);
}

.notif-error-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-error);
    color: white;
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.notif-error-text { flex: 1; min-width: 0; }
.notif-error-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.notif-pagination {
    margin-top: var(--spacing-xl);
}

.notif-pagination-inner {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.empty-state-notif {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.empty-state-notif .empty-state-icon {
    color: var(--color-primary);
}

.empty-state-notif .empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.empty-state-notif .empty-state-description {
    color: var(--color-gray-600);
}

.empty-state-notif .empty-state-action {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

[data-theme="dark"] .notif-chip {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

[data-theme="dark"] .notif-chip:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

[data-theme="dark"] .notif-chip-active {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--color-primary);
}

[data-theme="dark"] .notif-group-title {
    color: var(--text-secondary);
}

[data-theme="dark"] .notif-item:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .notif-item-unread {
    background: rgba(99, 102, 241, 0.12);
}

[data-theme="dark"] .notif-item-unread:hover {
    background: rgba(99, 102, 241, 0.18);
}

[data-theme="dark"] .notif-title {
    color: var(--text-primary);
}

[data-theme="dark"] .notif-time,
[data-theme="dark"] .notif-message {
    color: var(--text-secondary);
}

[data-theme="dark"] .notif-icon-info { background: var(--bg-tertiary); color: var(--text-secondary); }
[data-theme="dark"] .notif-icon-reminder { background: var(--bg-tertiary); color: var(--text-secondary); }

@media (max-width: 480px) {
    .notif-actions-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .notif-filter-chips {
        justify-content: flex-start;
    }
    .notif-item {
        padding: var(--spacing-sm);
    }
}

/* ============================================
   SweetAlert2 modals (My Notes, Add Bookmark, etc.)
   ============================================ */
.swal2-container {
    padding: var(--spacing-lg);
}
.swal2-popup {
    width: calc(100% - 2 * var(--spacing-lg));
    max-width: 420px;
    padding: 0;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-xl);
    background: #fff;
    overflow: hidden;
}
.swal2-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-sm);
}
.swal2-html-container {
    margin: 0;
    padding: 0 var(--spacing-lg);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}
.swal2-validation-message {
    background: transparent;
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}
/* Timestamp line in Add Bookmark */
.swal-timestamp {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}
.swal-timestamp strong {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}
/* Textareas inside Swal (My Notes, Add Bookmark) */
.swal2-popup .swal2-textarea,
.swal2-popup .swal2-textarea.swal2-textarea {
    width: 100%;
    min-height: 100px;
    margin: 0 0 var(--spacing-lg);
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: #fff;
    color: var(--color-gray-900);
    resize: vertical;
    font-family: inherit;
}
.swal2-popup .swal2-textarea::placeholder {
    color: var(--color-gray-500);
}
.swal2-popup .swal2-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb, 99, 102, 241), 0.2);
}
/* Actions row */
.swal2-actions {
    margin: 0;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    gap: var(--spacing-sm);
    flex-wrap: nowrap;
}
.swal2-styled.swal2-confirm {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    border: none;
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}
.swal2-styled.swal2-confirm:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}
.swal2-styled.swal2-cancel {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-300);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}
.swal2-styled.swal2-cancel:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}
/* Danger confirm (Delete note / Delete bookmark) */
.swal2-styled.swal2-confirm.swal2-default-outline:not([style]) {
    background: var(--color-error);
    color: #fff;
    border: none;
}
.swal2-styled.swal2-confirm.swal2-default-outline:hover {
    background: #dc2626;
}
/* Success/error toast styling */
.swal2-popup.swal2-toast {
    max-width: 360px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
}

[data-theme="dark"] .swal2-popup {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}
[data-theme="dark"] .swal2-title {
    color: var(--text-primary);
}
[data-theme="dark"] .swal2-html-container {
    color: var(--text-secondary);
}
[data-theme="dark"] .swal-timestamp {
    color: var(--text-secondary);
}
[data-theme="dark"] .swal-timestamp strong {
    color: var(--color-primary);
}
[data-theme="dark"] .swal2-popup .swal2-textarea {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="dark"] .swal2-styled.swal2-cancel {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
[data-theme="dark"] .swal2-styled.swal2-cancel:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

@media (max-width: 767px) {
    .bookmarks-page-header .page-header-actions {
        width: 100%;
    }
    .bookmarks-filter-tabs {
        width: 100%;
        justify-content: stretch;
    }
    .bookmarks-tab {
        flex: 1;
        text-align: center;
    }
}

/* Note Item Styles */
.note-item {
    min-width: 0;
}

.note-item-header {
    margin-bottom: var(--spacing-md);
}

.note-item-content {
    min-width: 0;
}

.note-course {
    margin-bottom: var(--spacing-xs);
}

.note-course-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}

.note-course-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.note-lesson {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.note-content {
    white-space: pre-wrap;
    color: var(--color-gray-900);
    line-height: var(--line-height-relaxed);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.note-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-md);
}

/* Bookmark Item Styles */
.bookmark-item {
    min-width: 0;
}

.bookmark-item-header {
    margin-bottom: var(--spacing-md);
}

.bookmark-item-content {
    min-width: 0;
}

.bookmark-course {
    margin-bottom: var(--spacing-xs);
}

.bookmark-course-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}

.bookmark-course-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.bookmark-lesson {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.bookmark-position {
    margin-top: var(--spacing-sm);
}

.bookmark-note {
    color: var(--color-gray-700);
    margin-top: var(--spacing-md);
    font-style: italic;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.bookmark-meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-md);
}

/* Responsive Wishlist/Notes/Bookmarks */
@media (max-width: 640px) {
    .note-item-header,
    .bookmark-item-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .note-item-header .btn,
    .bookmark-item-header .btn {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
}

@media (max-width: 375px) {
    .note-item,
    .bookmark-item {
        padding: var(--spacing-md);
    }
    
    .note-course-link,
    .bookmark-course-link {
        font-size: var(--font-size-sm);
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .note-lesson,
    .bookmark-lesson {
        font-size: var(--font-size-xs);
    }
    
    .note-content,
    .bookmark-note {
        font-size: var(--font-size-sm);
    }
    
    .note-meta,
    .bookmark-meta {
        font-size: var(--font-size-2xs);
    }
    
    .note-item-header .btn,
    .bookmark-item-header .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Instructor Dashboard – Quick Links (top)
   ============================================ */

.instructor-quick-links {
    width: 100%;
}

.instructor-quick-links-inner {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.instructor-quick-link-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: inherit;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.instructor-quick-link-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.instructor-quick-link-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.instructor-quick-link-icon-revenue {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(217, 119, 6, 0.15));
    color: #d97706;
}

.instructor-quick-link-icon-analytics {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(37, 99, 235, 0.15));
    color: #2563eb;
}

.instructor-quick-link-icon-community {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(22, 163, 74, 0.15));
    color: #16a34a;
}

.instructor-quick-link-icon-messages {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(79, 70, 229, 0.15));
    color: #4f46e5;
}

.instructor-quick-link-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.instructor-quick-link-label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.instructor-quick-link-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.instructor-quick-link-arrow {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    flex-shrink: 0;
    opacity: 0.8;
    transition: transform var(--transition-fast);
}

.instructor-quick-link-card:hover .instructor-quick-link-arrow {
    transform: translateX(4px);
    opacity: 1;
}

.instructor-dashboard-main {
    width: 100%;
}

@media (max-width: 968px) {
    .instructor-quick-links-inner {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .instructor-quick-link-card {
        padding: var(--spacing-lg);
    }

    .instructor-quick-link-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }
}

/* ============================================
   Instructor Analytics Overview Page
   ============================================ */

.analytics-overview-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.analytics-overview-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.analytics-overview-header-text {
    flex: 1;
    min-width: 0;
}

.analytics-overview-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.analytics-overview-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.analytics-overview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.analytics-stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.analytics-stat-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.analytics-stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.analytics-stat-icon-courses {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.analytics-stat-icon-students {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: #16a34a;
}

.analytics-stat-icon-revenue {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    color: #d97706;
}

.analytics-stat-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.analytics-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.analytics-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.analytics-by-course-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.analytics-by-course-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.analytics-by-course-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.analytics-by-course-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.analytics-by-course-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.analytics-by-course-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.analytics-by-course-body {
    padding: var(--spacing-xl);
}

.analytics-course-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.analytics-course-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.analytics-course-item:hover {
    border-color: var(--color-primary-light);
    background: var(--color-gray-50);
    box-shadow: var(--shadow-sm);
}

.analytics-course-info {
    flex: 1;
    min-width: 0;
}

.analytics-course-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    line-height: 1.3;
}

.analytics-course-meta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.analytics-course-meta i {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.analytics-course-action {
    flex-shrink: 0;
}

/* Instructor Students page – 2-tab view */
.instructor-students-tabs {
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.instructor-students-tab-list {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--color-gray-200);
    padding: 0 var(--spacing-lg);
    background: var(--bg-secondary);
}

.instructor-students-tab {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.instructor-students-tab:hover {
    color: var(--text-primary);
}

.instructor-students-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.instructor-students-tab-count {
    font-size: var(--font-size-sm);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.instructor-students-panel {
    display: none;
    padding: var(--spacing-xl);
}

.instructor-students-panel.active {
    display: block;
}

.instructor-students-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.instructor-students-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.instructor-students-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--bg-secondary);
}

.instructor-students-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.instructor-students-table tbody tr:hover {
    background: var(--color-gray-50);
}

.instructor-students-name {
    font-weight: 500;
    color: var(--text-primary);
}

.instructor-students-courses {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    align-items: center;
}

.instructor-students-course-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background var(--transition-fast);
}

.instructor-students-course-badge:hover {
    background: rgba(99, 102, 241, 0.2);
}

/* Instructor Quizzes page – professional layout */
.quizzes-page-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.quizzes-page-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.quizzes-page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.quizzes-page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.quizzes-tabs-card {
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--color-gray-100);
}

.quizzes-panel-body {
    padding-top: 0;
}

.quizzes-panel-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.5;
}

.quizzes-course-list .analytics-course-item {
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
}

/* Instructor Quizzes – all quizzes table */
.instructor-quizzes-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-100);
}

.instructor-quizzes-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.instructor-quizzes-th {
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--bg-secondary);
}

.instructor-quizzes-th-status {
    width: 120px;
}

.instructor-quizzes-th-actions {
    width: 100px;
    text-align: right;
    padding-right: var(--spacing-lg);
}

.instructor-quizzes-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.instructor-quizzes-tr:last-child td {
    border-bottom: none;
}

.instructor-quizzes-table tbody .instructor-quizzes-tr:hover,
table.ui-table tbody tr.instructor-quizzes-tr:hover {
    background: var(--color-gray-50);
}

.instructor-quizzes-quiz-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.instructor-quizzes-course-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.instructor-quizzes-course-link:hover {
    text-decoration: underline;
}

.instructor-quizzes-status {
    display: inline-block;
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-full);
}

.instructor-quizzes-status-published {
    background: rgba(34, 197, 94, 0.12);
    color: #15803d;
}

.instructor-quizzes-status-draft {
    background: var(--color-gray-100);
    color: var(--text-secondary);
}

.instructor-quizzes-status-scheduled {
    background: rgba(245, 158, 11, 0.14);
    color: #b45309;
}

.instructor-quizzes-status-live {
    background: rgba(34, 197, 94, 0.14);
    color: #15803d;
}

.instructor-quizzes-status-completed {
    background: var(--color-gray-100);
    color: var(--text-secondary);
}

.instructor-quizzes-status-cancelled {
    background: rgba(239, 68, 68, 0.12);
    color: #b91c1c;
}

.instructor-quizzes-status-expired {
    background: rgba(100, 116, 139, 0.14);
    color: #475569;
}

.instructor-quizzes-actions {
    white-space: nowrap;
    text-align: right;
}

.instructor-quizzes-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    background: var(--color-gray-100);
    margin-left: var(--spacing-xs);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.instructor-quizzes-action-btn:first-child {
    margin-left: 0;
}

.instructor-quizzes-action-btn:hover {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.12);
}

.instructor-quizzes-actions .btn {
    margin-right: var(--spacing-xs);
}

.instructor-quizzes-actions .btn:last-child {
    margin-right: 0;
}

@media (max-width: 768px) {
    .instructor-students-tab-list {
        flex-wrap: wrap;
    }

    .instructor-students-table th:nth-child(2),
    .instructor-students-table td:nth-child(2) {
        display: none;
    }

    .instructor-quizzes-table th:nth-child(3),
    .instructor-quizzes-table td:nth-child(3) {
        display: none;
    }
}

.analytics-empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
}

.analytics-empty-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-lg);
}

.analytics-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm);
}

.analytics-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl);
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 968px) {
    .analytics-overview-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .analytics-overview-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .analytics-overview-title {
        font-size: var(--font-size-2xl);
    }

    .analytics-course-item {
        flex-direction: column;
        align-items: stretch;
        text-align: left;
    }

    .analytics-course-action {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Instructor My Courses Page
   ============================================ */

.instructor-courses-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.instructor-courses-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.instructor-courses-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.instructor-courses-header-text {
    flex: 1;
    min-width: 0;
}

.instructor-courses-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.instructor-courses-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.instructor-courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.instructor-course-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow-sm);
}

.instructor-course-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.instructor-course-thumbnail-wrap {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--color-gray-100);
}

.instructor-course-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.instructor-course-card:hover .instructor-course-thumbnail {
    transform: scale(1.05);
}

.instructor-course-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--font-size-4xl);
}

.instructor-course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.1) 100%);
    pointer-events: none;
}

.instructor-course-status-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.025em;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.instructor-course-status-badge i {
    font-size: var(--font-size-xs);
}

.instructor-course-status-published {
    background: rgba(34, 197, 94, 0.95);
    color: white;
}

.instructor-course-status-draft {
    background: rgba(245, 158, 11, 0.95);
    color: white;
}

.instructor-course-body {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: var(--spacing-lg);
}

.instructor-course-header {
    flex: 1;
}

.instructor-course-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.instructor-course-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.instructor-course-footer {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-100);
}

.instructor-course-meta {
    display: flex;
    align-items: center;
}

.instructor-course-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

.instructor-course-meta-item i {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.instructor-course-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.instructor-course-actions-primary {
    display: flex;
    gap: var(--spacing-xs);
}

.instructor-course-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    flex: 1;
    white-space: nowrap;
}

.instructor-course-action-btn i {
    font-size: var(--font-size-base);
}

.instructor-course-action-btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.instructor-course-action-btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 4px 8px rgba(99, 102, 241, 0.3);
    transform: translateY(-1px);
}

.instructor-course-action-btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--color-gray-200);
}

.instructor-course-action-btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
    color: var(--text-primary);
}

.instructor-course-actions-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-xs);
}

.instructor-course-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    background: transparent;
}

.instructor-course-link:hover {
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
}

.instructor-course-link i {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.instructor-courses-empty {
    text-align: center;
    padding: var(--spacing-3xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
}

.instructor-courses-empty-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    margin: 0 auto var(--spacing-xl);
}

.instructor-courses-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm);
}

.instructor-courses-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 640px) {
    .instructor-courses-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .instructor-courses-header-content {
        flex-direction: column;
    }

    .instructor-courses-title {
        font-size: var(--font-size-2xl);
    }

    .instructor-courses-grid {
        grid-template-columns: 1fr;
    }

    .instructor-course-thumbnail-wrap {
        height: 160px;
    }

    .instructor-course-body {
        padding: var(--spacing-lg);
    }

    .instructor-course-title {
        font-size: var(--font-size-lg);
    }

    .instructor-course-actions-primary {
        flex-direction: column;
    }

    .instructor-course-action-btn {
        width: 100%;
        justify-content: center;
    }

    .instructor-course-actions-links {
        justify-content: center;
    }
}

/* ============================================
   Course Edit Page (Instructor)
   ============================================ */

.course-edit-header {
    margin-bottom: var(--spacing-xl);
}

.course-edit-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.course-edit-back:hover {
    color: var(--color-primary);
}

.course-edit-back i {
    font-size: var(--font-size-lg);
}

.course-edit-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.course-edit-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.course-edit-header-text {
    flex: 1;
    min-width: 0;
}

.course-edit-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.course-edit-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
}

.course-edit-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.course-edit-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.course-edit-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.course-edit-card-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.course-edit-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.course-edit-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.course-edit-form {
    padding: var(--spacing-xl);
}

.course-edit-field {
    margin-bottom: var(--spacing-xl);
}

.course-edit-field-half {
    margin-bottom: 0;
}

.course-edit-price-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.course-edit-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.course-edit-required {
    color: var(--color-error);
}

.course-edit-input,
.course-edit-select,
.course-edit-textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.course-edit-input:focus,
.course-edit-select:focus,
.course-edit-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.course-edit-textarea {
    min-height: 120px;
    resize: vertical;
}

.course-edit-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.course-edit-file-wrap {
    margin-bottom: var(--spacing-sm);
}

.course-edit-file {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.course-edit-thumbnail-preview {
    margin-top: var(--spacing-md);
}

.course-edit-thumbnail-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.course-edit-thumbnail-img {
    max-width: 200px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.course-edit-hint {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin: var(--spacing-sm) 0 0 0;
}

.course-edit-field-checkbox {
    margin-bottom: var(--spacing-lg);
}

.course-edit-checkbox {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.course-edit-checkbox input {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--color-primary);
}

.course-edit-checkbox-text {
    user-select: none;
}

.course-edit-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    margin-top: var(--spacing-lg);
}

@media (max-width: 640px) {
    .course-edit-header-content {
        flex-direction: column;
    }

    .course-edit-title {
        font-size: var(--font-size-2xl);
    }

    .course-edit-price-row {
        grid-template-columns: 1fr;
    }

    .course-edit-actions {
        flex-direction: column;
    }

    .course-edit-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Lesson Create/Edit - Type-specific fields and preview
   ============================================ */

.lesson-type-block {
    transition: opacity var(--transition-base);
}

.lesson-media-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.lesson-preview-container {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.lesson-preview-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

.lesson-preview-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
}

.lesson-preview-video {
    background: var(--color-gray-900);
    max-height: 500px;
}

.lesson-preview-pdf {
    background: var(--bg-primary);
}

@media (max-width: 640px) {
    .lesson-preview-container {
        padding: var(--spacing-md);
    }

    .lesson-preview-video {
        max-height: 300px;
    }

    .lesson-preview-pdf {
        height: 400px;
    }
}

/* ============================================
   Lessons List (Instructor – content view)
   ============================================ */

.lessons-back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.lessons-back-link:hover {
    color: var(--color-primary);
}

.lessons-back-link i {
    font-size: var(--font-size-lg);
}

.lessons-header {
    margin-bottom: var(--spacing-xl);
}

.lessons-header-main {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.lessons-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.lessons-header-text {
    flex: 1;
    min-width: 0;
}

.lessons-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.lessons-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
}

.lessons-header-actions {
    flex-shrink: 0;
}

.lessons-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.lessons-card-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
}

.lessons-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.lessons-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.lessons-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.lesson-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
    transition: background var(--transition-fast);
}

.lesson-list-item:last-child {
    border-bottom: none;
}

.lesson-list-item:hover {
    background: var(--bg-secondary);
}

.lesson-list-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm) var(--spacing-md);
    min-width: 0;
}

.lesson-type-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    flex-shrink: 0;
}

.lesson-type-video {
    background: rgba(99, 102, 241, 0.12);
    color: var(--color-primary);
}

.lesson-type-pdf {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.lesson-type-text {
    background: rgba(139, 92, 246, 0.12);
    color: var(--color-secondary);
}

.lesson-list-title {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.lesson-list-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    width: 100%;
}

.lesson-list-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.lessons-empty {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.lessons-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 2.5rem;
}

.lessons-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.lessons-empty-text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
}

@media (max-width: 768px) {
    .lessons-header-main {
        flex-direction: column;
        align-items: flex-start;
    }

    .lessons-header-actions {
        width: 100%;
    }

    .lessons-header-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .lesson-list-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .lesson-list-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* ============================================
   Lesson View – Instructor (content view)
   ============================================ */

.lesson-layout-instructor .lesson-instructor-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--color-gray-200);
    flex-shrink: 0;
}

.lesson-instructor-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.lesson-instructor-back:hover {
    color: var(--color-primary);
}

.lesson-instructor-back i {
    font-size: 1.25rem;
}

@media (max-width: 768px) {
    .lesson-layout-instructor .lesson-instructor-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .lesson-instructor-back {
        order: 1;
    }

    .lesson-layout-instructor .lesson-instructor-bar .btn {
        width: 100%;
        justify-content: center;
        order: 2;
    }
}

/* ============================================
   Support Portal (Contact Support)
   ============================================ */

.support-page-wrap {
    min-height: 0;
}

.support-container {
    max-width: 1200px;
    margin: 0 auto;
}

.support-hero-public {
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-md);
}

.support-back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
}

.support-back-link:hover {
    color: var(--color-primary);
}

.support-page-header {
    margin-bottom: var(--spacing-lg);
}

.support-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xl);
    align-items: start;
}

.support-main {
    min-width: 0;
}

.support-form-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.support-aside {
    position: sticky;
    top: var(--spacing-lg);
}

.support-aside-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.support-aside-section {
    margin-bottom: var(--spacing-lg);
}

.support-aside-section:last-of-type {
    margin-bottom: 0;
}

.support-aside-heading {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin: 0 0 var(--spacing-xs) 0;
}

.support-aside-text {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin: 0;
    line-height: 1.5;
}

.support-aside-list {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin: 0;
    padding-left: var(--spacing-lg);
    line-height: 1.6;
}

.support-aside-list a {
    color: var(--color-primary);
    text-decoration: none;
}

.support-aside-list a:hover {
    text-decoration: underline;
}

.support-aside-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

/* Form rows and labels */
.form-row {
    margin-bottom: var(--spacing-lg);
}

.form-row:last-of-type {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-label .required {
    color: var(--color-error);
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin: var(--spacing-xs) 0 0 0;
    line-height: 1.4;
}

.char-counter {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.support-input,
.support-select,
.support-textarea,
.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.support-input::placeholder,
.support-textarea::placeholder {
    color: var(--color-gray-400);
}

.support-input:focus,
.support-select:focus,
.support-textarea:focus,
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.support-textarea {
    min-height: 140px;
    resize: vertical;
}

.support-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.support-form-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    flex-wrap: wrap;
}

.support-form-result {
    margin-top: var(--spacing-lg);
    display: none;
}

.support-form-result.visible {
    display: block;
}

.support-form-loading {
    color: var(--text-secondary);
    margin: 0;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.support-form-success {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(34, 197, 94, 0.12);
    color: var(--color-success);
    border-radius: var(--radius-md);
    margin: 0;
    font-size: var(--font-size-sm);
}

.support-form-success i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.support-form-error {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-error);
    border-radius: var(--radius-md);
    margin: 0;
    font-size: var(--font-size-sm);
}

.support-form-error i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

/* Legacy class compatibility */
.support-field {
    margin-bottom: var(--spacing-lg);
}

.support-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.support-body {
    padding: var(--spacing-xl);
}

.public-support-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-2xl);
}

.public-support-hero {
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: var(--spacing-xl);
}

.public-support-title-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.public-support-title {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
}

.public-support-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.public-support-content-wrap {
    padding-bottom: var(--spacing-2xl);
}

.public-support-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.support-page-header {
    margin-bottom: var(--spacing-lg);
}

.support-page-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.support-page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .support-layout {
        grid-template-columns: 1fr;
    }

    .support-aside {
        position: static;
    }
}

@media (max-width: 768px) {
    .support-container {
        padding: 0 var(--spacing-md);
    }

    .support-form-actions {
        flex-direction: column;
    }

    .support-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 375px) {
    .support-aside-actions .btn {
        width: 100%;
    }
}

/* Dark mode */
[data-theme="dark"] .support-form-card,
[data-theme="dark"] .support-aside-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .support-aside-heading {
    color: var(--text-secondary);
}

[data-theme="dark"] .support-input,
[data-theme="dark"] .support-select,
[data-theme="dark"] .support-textarea,
[data-theme="dark"] .form-input {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

/* ============================================
   Assignments List Page
   ============================================ */

.assignments-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.assignments-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.assignments-breadcrumb a:hover {
    color: var(--color-primary);
}

.assignments-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.assignments-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.assignments-list-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.assignments-list-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.assignments-list-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.assignments-list-header-text {
    flex: 1;
    min-width: 0;
}

.assignments-list-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.assignments-list-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.assignments-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.assignment-list-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.assignment-list-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.assignment-list-card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    flex-wrap: wrap;
}

.assignment-list-card-main {
    flex: 1;
    min-width: 0;
}

.assignment-list-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.assignment-list-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.assignment-list-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.assignment-list-meta-item i {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.assignment-list-meta-muted {
    color: var(--color-gray-400);
}

.assignment-list-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.assignment-list-badge-published {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.assignment-list-badge-draft {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.assignment-list-badge-overdue {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.assignment-list-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.assignment-list-card-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.assignments-empty {
    background: var(--bg-primary);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    margin: 0;
}

.assignments-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.assignments-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.assignments-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .assignments-list-header {
        flex-direction: column;
        align-items: stretch;
    }

    .assignments-list-header-content {
        flex-direction: column;
    }

    .assignments-list-title {
        font-size: var(--font-size-2xl);
    }

    .assignment-list-card-body {
        flex-direction: column;
        align-items: stretch;
    }

    .assignment-list-card-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

/* ============================================
   Assignment Statistics Page
   ============================================ */

.assignment-stat-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.assignment-stat-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.assignment-stat-breadcrumb a:hover {
    color: var(--color-primary);
}

.assignment-stat-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.assignment-stat-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.assignment-stat-header {
    margin-bottom: var(--spacing-xl);
}

.assignment-stat-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.assignment-stat-back:hover {
    color: var(--color-primary);
}

.assignment-stat-back i {
    font-size: var(--font-size-lg);
}

.assignment-stat-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.assignment-stat-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.assignment-stat-header-text {
    flex: 1;
    min-width: 0;
}

.assignment-stat-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.assignment-stat-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.assignment-stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.assignment-stat-icon-total {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.assignment-stat-icon-graded {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.assignment-stat-icon-pending {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    color: var(--color-warning);
}

.assignment-stat-icon-average {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.assignment-submissions-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.assignment-submissions-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.assignment-submissions-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.assignment-submissions-header-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.assignment-submissions-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.assignment-submissions-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.assignment-submissions-body {
    padding: var(--spacing-xl);
}

.assignment-submissions-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.assignment-submissions-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.assignment-submissions-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-gray-200);
    white-space: nowrap;
}

.assignment-submissions-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.assignment-submissions-table tbody tr:hover {
    background: var(--color-gray-50);
}

.assignment-submissions-cell-student {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.assignment-submissions-cell-file {
    color: var(--text-secondary);
}

.assignment-submissions-cell-date {
    color: var(--text-secondary);
}

.assignment-submissions-cell-grade {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.assignment-submissions-muted {
    color: var(--color-gray-400);
}

.assignment-stat-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.assignment-stat-badge-graded {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.assignment-stat-badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.assignment-submissions-empty {
    text-align: center;
    padding: var(--spacing-3xl);
}

.assignment-submissions-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.assignment-submissions-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.assignment-submissions-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1024px) {
    .assignment-stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .assignment-stat-header-content {
        flex-direction: column;
    }

    .assignment-stat-title {
        font-size: var(--font-size-2xl);
    }

    .assignment-stat-cards {
        grid-template-columns: 1fr;
    }

    .assignment-submissions-header {
        flex-direction: column;
    }

    .assignment-submissions-body {
        padding: var(--spacing-lg);
    }

    .assignment-submissions-table th,
    .assignment-submissions-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ============================================
   Grade Submissions (Grading) Page
   ============================================ */

.grading-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.grading-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.grading-breadcrumb a:hover {
    color: var(--color-primary);
}

.grading-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.grading-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.grading-header {
    margin-bottom: var(--spacing-xl);
}

.grading-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.grading-back:hover {
    color: var(--color-primary);
}

.grading-back i {
    font-size: var(--font-size-lg);
}

.grading-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.grading-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.grading-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.grading-header-text {
    flex: 1;
    min-width: 0;
}

.grading-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.grading-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.grading-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.grading-submission-count {
    text-align: right;
}

.grading-submission-count-value {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1.2;
}

.grading-submission-count-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.grading-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.grading-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.grading-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.grading-card-graded {
    border-left: 4px solid var(--color-success);
}

.grading-card-pending {
    border-left: 4px solid var(--color-primary);
}

.grading-card-inner {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    flex-wrap: wrap;
}

.grading-card-left {
    width: 280px;
    min-width: 0;
    padding-right: var(--spacing-xl);
    border-right: 1px solid var(--color-gray-100);
}

.grading-student {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.grading-student-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-gray-200), var(--color-gray-300));
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.grading-student-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.grading-student-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.grading-student-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.grading-file-box {
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.grading-file-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.grading-file-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.grading-file-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.grading-file-download {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.grading-file-download:hover {
    color: var(--color-primary-dark);
}

.grading-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.grading-status-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.grading-status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.grading-status-badge-graded {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.grading-status-badge-pending {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
}

.grading-card-right {
    flex: 1;
    min-width: 280px;
}

.grading-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.grading-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.grading-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.grading-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.grading-grade-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.grading-input-grade {
    width: 100%;
    max-width: 140px;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.grading-input-grade:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.grading-grade-max {
    margin-left: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
}

.grading-quick-tokens {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.grading-textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    resize: vertical;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.grading-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.grading-textarea::placeholder {
    color: var(--color-gray-400);
}

.grading-form-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    padding-top: var(--spacing-sm);
}

.grading-last-updated {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.grading-empty {
    background: var(--bg-primary);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    margin: 0;
}

.grading-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.grading-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.grading-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .grading-header-row {
        flex-direction: column;
        align-items: stretch;
    }

    .grading-header-content {
        flex-direction: column;
    }

    .grading-title {
        font-size: var(--font-size-2xl);
    }

    .grading-card-inner {
        flex-direction: column;
        padding: var(--spacing-lg);
    }

    .grading-card-left {
        width: 100%;
        padding-right: 0;
        padding-bottom: var(--spacing-lg);
        border-right: none;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .grading-form-row {
        grid-template-columns: 1fr;
    }

    .grading-form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .grading-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Quizzes List Page
   ============================================ */

.quizzes-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.quizzes-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.quizzes-breadcrumb a:hover {
    color: var(--color-primary);
}

.quizzes-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.quizzes-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.quizzes-list-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.quizzes-list-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.quizzes-list-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.quizzes-list-header-text {
    flex: 1;
    min-width: 0;
}

.quizzes-list-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.quizzes-list-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.quizzes-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quiz-list-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.quiz-list-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.quiz-list-card-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    flex-wrap: wrap;
}

.quiz-list-card-main {
    flex: 1;
    min-width: 0;
}

.quiz-list-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.quiz-list-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.quiz-list-meta-item {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quiz-list-meta-item i {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.quiz-list-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.quiz-list-badge-published {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.quiz-list-badge-draft {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.quiz-list-card-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.quiz-list-card-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quizzes-empty {
    background: var(--bg-primary);
    border: 1px dashed var(--color-gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
    margin: 0;
}

.quizzes-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.quizzes-empty-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.quizzes-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .quizzes-list-header {
        flex-direction: column;
        align-items: stretch;
    }

    .quizzes-list-header-content {
        flex-direction: column;
    }

    .quizzes-list-title {
        font-size: var(--font-size-2xl);
    }

    .quiz-list-card-body {
        flex-direction: column;
        align-items: stretch;
    }

    .quiz-list-card-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

/* ============================================
   Quiz Statistics Page
   ============================================ */

.quiz-stat-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.quiz-stat-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.quiz-stat-breadcrumb a:hover {
    color: var(--color-primary);
}

.quiz-stat-breadcrumb i {
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.quiz-stat-breadcrumb span {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.quiz-stat-header {
    margin-bottom: var(--spacing-xl);
}

.quiz-stat-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.quiz-stat-back:hover {
    color: var(--color-primary);
}

.quiz-stat-back i {
    font-size: var(--font-size-lg);
}

.quiz-stat-header-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.quiz-stat-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.quiz-stat-header-text {
    flex: 1;
    min-width: 0;
}

.quiz-stat-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.quiz-stat-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.quiz-stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.quiz-stat-icon-total {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.quiz-stat-icon-passed {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.quiz-stat-icon-failed {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.1));
    color: var(--color-error);
}

.quiz-stat-icon-average {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.quiz-stat-attempts-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.quiz-stat-attempts-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.quiz-stat-attempts-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
}

.quiz-stat-attempts-header-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.quiz-stat-attempts-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.quiz-stat-attempts-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.quiz-stat-attempts-body {
    padding: var(--spacing-xl);
}

.quiz-stat-attempts-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.quiz-stat-attempts-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.quiz-stat-attempts-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-gray-200);
    white-space: nowrap;
}

.quiz-stat-attempts-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.quiz-stat-attempts-table tbody tr:hover {
    background: var(--color-gray-50);
}

.quiz-stat-attempts-cell-student {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.quiz-stat-attempts-cell-score {
    color: var(--text-secondary);
}

.quiz-stat-attempts-passed {
    color: var(--color-success);
    font-weight: var(--font-weight-semibold);
}

.quiz-stat-attempts-failed {
    color: var(--color-error);
    font-weight: var(--font-weight-semibold);
}

.quiz-stat-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.quiz-stat-badge-passed {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.quiz-stat-badge-failed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.quiz-stat-attempts-empty {
    text-align: center;
    padding: var(--spacing-3xl);
}

.quiz-stat-attempts-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.quiz-stat-attempts-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.quiz-stat-attempts-empty-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1024px) {
    .quiz-stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .quiz-stat-header-content {
        flex-direction: column;
    }

    .quiz-stat-title {
        font-size: var(--font-size-2xl);
    }

    .quiz-stat-cards {
        grid-template-columns: 1fr;
    }

    .quiz-stat-attempts-header {
        flex-direction: column;
    }

    .quiz-stat-attempts-body {
        padding: var(--spacing-lg);
    }

    .quiz-stat-attempts-table th,
    .quiz-stat-attempts-table td {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ============================================
   Edit Quiz – Questions section
   ============================================ */

.quiz-edit-questions-card .course-edit-card-header {
    border-bottom: 1px solid var(--color-gray-100);
    padding-bottom: var(--spacing-lg);
}

.quiz-edit-questions-body {
    padding: var(--spacing-xl);
}

.quiz-edit-question-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.quiz-edit-question-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    flex-wrap: wrap;
}

.quiz-edit-question-content {
    flex: 1;
    min-width: 0;
}

.quiz-edit-question-number {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.quiz-edit-question-text {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.4;
}

.quiz-edit-question-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.quiz-edit-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.quiz-edit-option-correct {
    color: var(--color-success);
    font-weight: var(--font-weight-semibold);
}

.quiz-edit-option-correct i {
    font-size: var(--font-size-base);
}

.quiz-edit-option-letter {
    display: inline-block;
    width: 1.5rem;
    font-weight: var(--font-weight-medium);
}

.quiz-edit-question-points {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.quiz-edit-question-points i {
    margin-right: var(--spacing-xs);
}

.quiz-edit-no-questions {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-2xl) 0;
}

.quiz-edit-add-section {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-xl);
}

.quiz-edit-add-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-lg) 0;
}

.quiz-edit-add-section .course-edit-form {
    padding: 0;
}

.quiz-edit-add-section .course-edit-actions {
    padding-top: var(--spacing-md);
    border-top: none;
}

@media (max-width: 768px) {
    .quiz-edit-question-item {
        flex-direction: column;
        align-items: stretch;
    }

    .quiz-edit-add-section .course-edit-price-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Admin Dashboard
   ============================================ */

.admin-dashboard-header {
    margin-bottom: var(--spacing-xl);
}

.admin-dashboard-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-error);
    margin-bottom: var(--spacing-md);
}

.admin-dashboard-header-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.admin-dashboard-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.admin-dashboard-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.admin-dashboard-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.admin-dashboard-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.admin-dashboard-stat .analytics-stat-content {
    position: relative;
    padding-right: var(--spacing-md);
}

.admin-dashboard-trend {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-xs);
}

.admin-dashboard-trend-up {
    color: var(--color-success);
}

.admin-dashboard-trend-stable {
    color: var(--text-secondary);
}

.admin-dashboard-stat-icon-revenue {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.1));
    color: var(--color-primary);
}

.admin-dashboard-stat-icon-enrollments {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.admin-dashboard-stat-icon-courses {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(217, 119, 6, 0.1));
    color: var(--color-warning);
}

.admin-dashboard-stat-icon-users {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.admin-dashboard-tables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.admin-dashboard-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.admin-dashboard-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.admin-dashboard-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06) 0%, rgba(139, 92, 246, 0.04) 100%);
    flex-wrap: wrap;
}

.admin-dashboard-card-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.admin-dashboard-card-header > div:not(.admin-dashboard-card-header-icon) {
    flex: 1;
    min-width: 0;
}

.admin-dashboard-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.admin-dashboard-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.admin-dashboard-card-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    text-decoration: none;
    flex-shrink: 0;
    transition: color var(--transition-fast);
}

.admin-dashboard-card-link:hover {
    color: var(--color-primary-dark);
}

.admin-dashboard-card-body {
    padding: var(--spacing-xl);
}

.admin-dashboard-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.admin-dashboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.admin-dashboard-table th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-gray-200);
}

.admin-dashboard-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.admin-dashboard-table tbody tr:hover {
    background: var(--color-gray-50);
}

.admin-dashboard-cell-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.admin-dashboard-cell-value {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.admin-dashboard-cell-muted {
    color: var(--text-secondary);
}

.admin-dashboard-cell-email {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.admin-dashboard-instructor {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.admin-dashboard-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.admin-dashboard-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.admin-dashboard-empty i {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.admin-dashboard-empty p {
    margin: 0;
    font-size: var(--font-size-sm);
}

.admin-dashboard-quick {
    background: linear-gradient(135deg, var(--color-gray-900), #1e1b4b);
    border: none;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.admin-dashboard-quick-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.admin-dashboard-quick-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.admin-dashboard-quick-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.6);
}

.admin-dashboard-quick-desc {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: white;
}

.admin-dashboard-quick-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-dashboard-quick-buttons .btn-primary {
    background: var(--color-primary);
    color: white;
}

.admin-dashboard-quick-buttons .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-color: rgba(255, 255, 255, 0.2);
}

.admin-dashboard-quick-buttons .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ============================================
   Admin User Management (Users List)
   ============================================ */

.admin-users-badge {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary);
}

/* User Management header (redesigned) */
.admin-users-header {
    margin-bottom: var(--spacing-xl);
}

.admin-users-header-top {
    margin-bottom: var(--spacing-md);
}

.admin-edit-user-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.admin-edit-user-back:hover {
    color: var(--color-primary);
}

.admin-edit-user-back i {
    font-size: var(--font-size-lg);
}

.admin-users-header-main {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.admin-users-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.admin-users-header-text {
    flex: 1;
    min-width: 0;
}

.admin-users-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.admin-users-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

.admin-users-filters {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.admin-users-filters:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-primary-light);
}

.admin-users-filters-form {
    width: 100%;
}

.admin-users-filters-form {
    width: 100%;
}

.admin-users-filters-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-md);
}

.admin-users-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.admin-users-field-search {
    flex: 1;
    min-width: 200px;
}

.admin-users-field-role {
    min-width: 160px;
}

.admin-users-field-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-users-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.admin-users-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.admin-users-search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    pointer-events: none;
}

.admin-users-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 2.5rem;
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.admin-users-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.admin-users-input::placeholder {
    color: var(--color-gray-400);
}

.admin-users-select {
    min-width: 140px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: 2.5rem;
}

.admin-users-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.admin-users-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.admin-users-avatar-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
    background: var(--color-gray-100);
}

.admin-users-user .admin-dashboard-cell-name {
    display: block;
}

.admin-users-email {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

.admin-users-role {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.admin-users-role-student {
    background: rgba(59, 130, 246, 0.15);
    color: #2563eb;
}

.admin-users-role-instructor {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.admin-users-role-super_admin {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.admin-users-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.admin-users-date i {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.admin-users-pagination {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    justify-content: center;
}

.admin-users-pagination-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.admin-users-page-current {
    cursor: default;
    pointer-events: none;
}

.admin-users-empty .admin-dashboard-empty-icon {
    margin-bottom: var(--spacing-lg);
}

.admin-users-empty-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.admin-users-empty-desc {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Admin Explore Courses
   ============================================ */

.admin-courses-filters-row.admin-courses-filters-row {
    gap: var(--spacing-md);
}

.admin-courses-field-category,
.admin-courses-field-price,
.admin-courses-field-level {
    min-width: 140px;
}

.admin-courses-field-minmax {
    min-width: 160px;
}

.admin-courses-minmax {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.admin-courses-input-num {
    width: 72px;
    padding-left: var(--spacing-md);
}

.admin-courses-card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.admin-courses-sort-form {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.admin-courses-sort-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

.admin-courses-sort-select {
    min-width: 120px;
}

.admin-courses-grid {
    margin-top: 0;
}

/* ============================================
   Admin Revenue Dashboard
   ============================================ */

.admin-revenue-field-date {
    min-width: 160px;
}

.admin-revenue-date-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.admin-revenue-date-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Revenue header with actions */
.admin-revenue-header {
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-header-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.admin-revenue-header-row .admin-users-header-main {
    flex: 1;
    min-width: 0;
}

.admin-revenue-header-actions {
    flex-shrink: 0;
}

/* Top row: date filter + total revenue stat */
.admin-revenue-top-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-xl);
    align-items: start;
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-top-row .admin-revenue-filters {
    min-width: 0;
}

.admin-revenue-stat-featured {
    min-width: 280px;
}

.admin-revenue-filter-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-md);
}

.admin-revenue-filter-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Two-column tables section */
.admin-revenue-tables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.admin-revenue-summary {
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-stat .analytics-stat-content {
    flex: 1;
    min-width: 0;
}

.admin-revenue-tx {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.admin-revenue-card {
    margin-bottom: var(--spacing-xl);
}

.admin-revenue-card:last-of-type {
    margin-bottom: 0;
}

.admin-revenue-empty {
    margin: 0;
    padding: var(--spacing-lg) 0;
}

@media (max-width: 1024px) {
    .admin-revenue-top-row {
        grid-template-columns: 1fr;
    }

    .admin-revenue-stat-featured {
        min-width: 0;
    }

    .admin-revenue-tables {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .admin-revenue-header-row {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-revenue-filter-row {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ============================================
   Admin Reports
   ============================================ */

.admin-reports-card {
    margin-bottom: var(--spacing-xl);
}

.admin-reports-card:last-child {
    margin-bottom: 0;
}

.admin-reports-form {
    max-width: 560px;
}

.admin-reports-date-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.admin-reports-actions {
    padding-top: 0;
}

@media (max-width: 480px) {
    .admin-reports-date-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Admin Roles & Permissions
   ============================================ */

.admin-roles-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.admin-roles-stat .analytics-stat-content {
    position: relative;
}

.admin-roles-stat-pct {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.admin-roles-stat-icon-student {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(37, 99, 235, 0.1));
    color: #2563eb;
}

.admin-roles-stat-icon-instructor {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(22, 163, 74, 0.1));
    color: var(--color-success);
}

.admin-roles-stat-icon-admin {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.1));
    color: var(--color-error);
}

.admin-roles-change-select {
    min-width: 120px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    padding-right: 2rem;
}

.admin-roles-change-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.admin-roles-self-hint {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
}

@media (max-width: 900px) {
    .admin-roles-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .admin-users-header-main {
        flex-direction: column;
    }

    .admin-users-title {
        font-size: var(--font-size-2xl);
    }

    .admin-users-filters-row {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-users-field-search {
        min-width: 0;
    }

    .admin-users-field-role {
        min-width: 0;
    }

    .admin-users-field-actions {
        flex-wrap: wrap;
    }
}

@media (max-width: 1024px) {
    .admin-dashboard-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .admin-dashboard-tables {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .admin-dashboard-header-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .admin-dashboard-title {
        font-size: var(--font-size-2xl);
    }

    .admin-dashboard-stats {
        grid-template-columns: 1fr;
    }

    .admin-dashboard-quick-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-dashboard-quick-buttons {
        flex-direction: column;
    }

    .admin-dashboard-quick-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   Enrollment Page Styles
   ============================================ */

/* Enrollment Stats */
.enrollment-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.enrollment-stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
}

.enrollment-stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.enrollment-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.enrollment-stat-icon-primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.enrollment-stat-icon-success {
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.enrollment-stat-icon-warning {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}

.enrollment-stat-content {
    flex: 1;
    min-width: 0;
}

.enrollment-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    line-height: 1.2;
}

.enrollment-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

/* Enrollment Grid */
.enrollments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* Enrollment Card Enhancements */
.enrollment-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

.course-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.course-card-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
}

.course-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
}

.course-card-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.course-card-title a:hover {
    color: var(--color-primary);
}

.course-card-description {
    font-size: var(--font-size-sm);
    color: var(--text-body);
    line-height: 1.6;
    margin: 0;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.course-card-instructor,
.course-card-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.course-card-instructor i,
.course-card-date i {
    font-size: var(--font-size-sm);
}

/* Enrollment Progress */
.enrollment-progress {
    margin-top: var(--spacing-sm);
}

.enrollment-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.enrollment-progress-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.enrollment-progress-value {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

/* Enrollment Status Badge */
.enrollment-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    align-self: flex-start;
}

.enrollment-status-completed {
    background-color: var(--color-success-light);
    color: var(--color-success);
}

.enrollment-status-in-progress {
    background-color: var(--color-warning-light);
    color: var(--color-warning);
}

.enrollment-status-not-started {
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
}

.course-card-footer {
    /* padding: var(--spacing-lg); */
    padding-top: 5px;
    border-top: 1px solid var(--color-gray-200);
    margin-top: auto;
}

/* Responsive Enrollment Page */
@media (max-width: 968px) {
    .enrollments-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .enrollment-stats {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    .enrollments-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }

    .enrollment-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

@media (max-width: 640px) {
    .enrollments-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .enrollment-stat-card {
        padding: var(--spacing-md);
    }

    .course-card-body {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .enrollment-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 375px) {
    .enrollment-stat-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .enrollment-stat-value {
        font-size: var(--font-size-xl);
    }
    
    .course-card-image-placeholder {
        height: 160px;
        font-size: 3rem;
    }
    
    .course-card-title {
        font-size: var(--font-size-base);
    }
    
    .course-card-description {
        font-size: var(--font-size-xs);
    }
}

/* ============================================
   Assignment Detail Page Styles
   ============================================ */

/* Assignment Detail Card */
.assignment-detail-card {
    padding: var(--spacing-xl);
    width: 100%;
    box-sizing: border-box;
}

.assignment-detail-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
}

.assignment-detail-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

.assignment-detail-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.assignment-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
}

.assignment-instructions {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.assignment-instructions-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.assignment-instructions-title i {
    color: var(--color-primary);
}

.assignment-instructions-content {
    background: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
}

/* Assignment Submission Card */
.assignment-submission-card {
    padding: var(--spacing-xl);
    width: 100%;
    box-sizing: border-box;
}

.assignment-submission-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
}

.assignment-submission-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

/* Submission File Card */
.submission-file-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(99, 102, 241, 0.03) 100%);
    border: 1.5px solid rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.08);
}

.submission-file-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.submission-file-card:hover {
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.12);
    transform: translateY(-2px);
}

.submission-file-card:hover::before {
    opacity: 1;
}

.submission-file-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
}

.submission-file-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.submission-file-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.submission-file-card:hover .submission-file-icon {
    transform: scale(1.05) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.submission-file-card:hover .submission-file-icon::before {
    opacity: 1;
}

.submission-file-details {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.submission-file-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
    line-height: 1.5;
    letter-spacing: -0.01em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    hyphens: none;
    position: relative;
    padding-left: var(--spacing-md);
    word-spacing: normal;
    max-width: 100%;
}

.submission-file-name::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.6;
}

.submission-file-date {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    min-width: 0;
    font-weight: var(--font-weight-medium);
}

.submission-file-date i {
    color: var(--color-primary);
    font-size: var(--font-size-base);
    opacity: 0.7;
}

.submission-file-card .btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.submission-file-card .btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.submission-file-card .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.submission-file-card .btn:hover::before {
    width: 300px;
    height: 300px;
}

.submission-file-card .btn i {
    margin-right: var(--spacing-xs);
    transition: transform 0.3s ease;
}

.submission-file-card .btn:hover i {
    transform: translateY(2px);
}

.submission-file-date i {
    font-size: var(--font-size-xs);
}

/* Submission Grade Card */
.submission-grade-card {
    background: linear-gradient(135deg, var(--color-success-light) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 2px solid var(--color-success-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.submission-grade-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.submission-grade-icon {
    width: 56px;
    height: 56px;
    background: var(--color-success);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.submission-grade-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xs);
}

.submission-grade-score {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-black);
    color: var(--color-success);
    line-height: 1;
}

.submission-grade-max {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-normal);
    opacity: 0.7;
}

.submission-feedback {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(16, 185, 129, 0.2);
}

.submission-feedback-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.submission-feedback-label i {
    color: var(--color-success);
}

.submission-feedback-content {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    line-height: 1.7;
    border-left: 3px solid var(--color-success);
}

/* Assignment Upload Form */
.assignment-upload-form {
    margin-top: var(--spacing-lg);
}

.assignment-dropzone {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    background: var(--color-gray-50);
    transition: all var(--transition-base);
    cursor: pointer;
    margin-bottom: var(--spacing-lg);
}

.assignment-dropzone:hover,
.assignment-dropzone.active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.assignment-dropzone-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

.assignment-dropzone:hover .assignment-dropzone-icon,
.assignment-dropzone.active .assignment-dropzone-icon {
    color: var(--color-primary);
}

.assignment-dropzone-content {
    margin-bottom: var(--spacing-sm);
}

.assignment-dropzone-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.assignment-dropzone-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.assignment-dropzone-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-xs);
}

.assignment-file-type,
.assignment-file-size {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Assignment Deadline Card */
.assignment-deadline-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-warning-light) 0%, rgba(251, 191, 36, 0.1) 100%);
    border: 2px solid var(--color-warning-light);
}

.assignment-deadline-card.assignment-deadline-overdue {
    background: linear-gradient(135deg, var(--color-error-light) 0%, rgba(239, 68, 68, 0.1) 100%);
    border-color: var(--color-error-light);
}

.assignment-deadline-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.assignment-deadline-icon {
    width: 40px;
    height: 40px;
    background: var(--color-warning);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.assignment-deadline-overdue .assignment-deadline-icon {
    background: var(--color-error);
}

.assignment-deadline-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

.assignment-deadline-content {
    text-align: center;
}

.assignment-deadline-date {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-black);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.assignment-deadline-time {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.assignment-deadline-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-error);
    color: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.assignment-deadline-none {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
}

/* Assignment Resource Card */
.assignment-resource-card {
    padding: var(--spacing-xl);
}

.assignment-resource-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.assignment-resource-title i {
    color: var(--color-primary);
}

.assignment-resource-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.assignment-resource-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.assignment-resource-link:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-200);
    color: var(--color-primary);
    transform: translateX(4px);
}

.assignment-resource-link i:first-child {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    flex-shrink: 0;
}

.assignment-resource-link span {
    flex: 1;
}

.assignment-resource-link i:last-child {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.assignment-resource-link:hover i:last-child {
    color: var(--color-primary);
}

/* Responsive Assignment Detail */
@media (max-width: 968px) {
    .grid.grid-3 {
        grid-template-columns: 1fr;
    }
    
    .col-span-2,
    .col-span-1 {
        grid-column: span 1;
    }
}

@media (max-width: 640px) {
    .assignment-detail-card,
    .assignment-submission-card,
    .assignment-deadline-card,
    .assignment-resource-card {
        padding: var(--spacing-md);
    }
    
    .submission-file-card {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
    }
    
    .submission-file-card .btn {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .submission-file-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }
    
    .submission-file-name {
        font-size: var(--font-size-base);
    }
    
    .submission-grade-header {
        flex-direction: column;
        text-align: center;
    }
    
    .assignment-dropzone {
        padding: var(--spacing-xl);
    }
    
    .assignment-dropzone-icon {
        font-size: 3rem;
    }
}

@media (max-width: 375px) {
    .assignment-dropzone-info {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .submission-grade-score {
        font-size: var(--font-size-3xl);
    }
}

/* ============================================
   Help Center Styles
   ============================================ */

/* ============================================
   HELP CENTER REDESIGN
   ============================================ */

.help-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.help-sidebar {
    min-width: 0;
    position: sticky;
    top: var(--spacing-xl);
}

.help-sidebar-card {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.help-sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0.02) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

.help-sidebar-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.help-sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
}

.help-sidebar-list {
    list-style: none;
    padding: var(--spacing-md);
    margin: 0;
}

.help-sidebar-list li {
    margin-bottom: var(--spacing-xs);
}

.help-sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    font-weight: var(--font-weight-medium);
    position: relative;
}

.help-sidebar-link i {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    flex-shrink: 0;
    transition: color 0.2s ease;
}

.help-sidebar-link span:first-of-type {
    flex: 1;
    min-width: 0;
}

.help-sidebar-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 var(--spacing-xs);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    margin-left: auto;
}

.help-sidebar-link:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
    transform: translateX(4px);
}

.help-sidebar-link:hover i {
    color: var(--color-primary);
}

.help-sidebar-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    border-left: 3px solid var(--color-primary);
    padding-left: calc(var(--spacing-md) - 3px);
}

.help-sidebar-link.active i {
    color: var(--color-primary);
}

.help-sidebar-link.active .help-sidebar-count {
    background: var(--color-primary);
    color: white;
}

.help-content {
    min-width: 0;
}

.help-count-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

.help-count-badge i {
    font-size: var(--font-size-base);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.faq-card {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.faq-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.faq-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.faq-card:hover::before {
    opacity: 1;
}

.faq-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

.faq-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

.faq-card:hover .faq-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.faq-category-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.faq-category-badge i {
    font-size: var(--font-size-sm);
}

.faq-card-body {
    padding: var(--spacing-lg);
}

.faq-question {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-md) 0;
    line-height: var(--line-height-tight);
}

.faq-question-link {
    color: var(--color-gray-900);
    text-decoration: none;
    transition: color 0.2s ease;
    display: block;
}

.faq-question-link:hover {
    color: var(--color-primary);
}

.faq-preview {
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

.faq-card-footer {
    padding: var(--spacing-lg);
    padding-top: 0;
    border-top: 1px solid var(--color-gray-200);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
}

.faq-read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
}

.faq-read-more:hover {
    gap: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.faq-read-more i {
    font-size: var(--font-size-base);
    transition: transform 0.2s ease;
}

.faq-read-more:hover i {
    transform: translateX(4px);
}

/* Responsive Help Center */
@media (max-width: 968px) {
    .help-layout {
        grid-template-columns: 250px 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .help-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .help-sidebar {
        order: 2;
        position: static;
    }
    
    .help-content {
        order: 1;
    }
    
    .help-sidebar-card {
        padding: 0;
    }
    
    .faq-card-header {
        padding: var(--spacing-md);
    }
    
    .faq-card-body {
        padding: var(--spacing-md);
    }
    
    .faq-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .faq-question {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 375px) {
    .help-layout {
        gap: var(--spacing-md);
    }
    
    .faq-card-header,
    .faq-card-body,
    .faq-card-footer {
        padding: var(--spacing-md);
    }
    
    .faq-question {
        font-size: var(--font-size-base);
    }
    
    .faq-preview {
        font-size: var(--font-size-sm);
    }
}

/* ============================================
   PROFILE PAGE REDESIGN
   ============================================ */

/* Profile Header */
.profile-header-modern {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: var(--spacing-xl);
}

.profile-cover-modern {
    height: 180px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
}

.profile-cover-modern::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(79, 70, 229, 0.05) 100%);
}

.profile-header-content-modern {
    padding: var(--spacing-xl);
    padding-top: calc(var(--spacing-xl) + 20px);
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    position: relative;
}

.profile-avatar-modern {
    width: 160px;
    height: 160px;
    border-radius: var(--radius-full);
    border: 6px solid white;
    background: white;
    margin-top: -80px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.profile-avatar-modern img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder-modern {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-info-modern {
    flex: 1;
    min-width: 0;
}

.profile-name-modern {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-meta-modern {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    align-items: center;
}

.profile-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.profile-meta-item i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.profile-actions-modern {
    flex-shrink: 0;
}

/* Profile Layout */
.profile-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.profile-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.profile-main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Profile Stats Card */
.profile-stats-card {
    padding: var(--spacing-xl);
}

.profile-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 var(--spacing-lg) 0;
}

.profile-stats-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.profile-stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.profile-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.profile-stat-icon-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.profile-stat-icon-success {
    background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
}

.profile-stat-icon-info {
    background: linear-gradient(135deg, var(--color-info) 0%, #2563eb 100%);
}

.profile-stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.profile-stat-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.profile-stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

/* Profile Achievements Card */
.profile-achievements-card {
    padding: var(--spacing-xl);
}

.profile-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.profile-badge-count {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
        font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
}

/* Profile Streak Card */
.profile-streak-card {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.profile-streak-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.profile-streak-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.profile-streak-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-warning);
    background: rgba(245, 158, 11, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
}

.profile-streak-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.profile-streak-icon {
    font-size: var(--font-size-4xl);
    color: var(--color-warning);
    flex-shrink: 0;
}

.profile-streak-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.profile-streak-days {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-black);
    color: var(--color-gray-900);
}

.profile-streak-best {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* Profile Badges Grid */
.profile-badges-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.profile-badge-item {
    text-align: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-badge-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.profile-badge-item-locked {
    opacity: 0.5;
    background: var(--color-gray-50);
}

.profile-badge-icon-earned {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    border: 4px solid white;
}

.profile-badge-icon-locked {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--color-gray-400);
    border: 4px solid white;
}

.profile-badge-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.profile-badge-desc {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    line-height: var(--line-height-tight);
}

/* Profile Section */
.profile-section {
    width: 100%;
}

.profile-section-header-main {
    margin-bottom: var(--spacing-lg);
}

.profile-section-title-main {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
}

/* Profile Courses Grid */
.profile-courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.profile-course-card {
    display: block;
    text-decoration: none;
    padding: 0;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--color-gray-200);
    height: 100%;
}

.profile-course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.profile-course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-course-card:hover::before {
    opacity: 1;
}

.profile-course-thumbnail {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: var(--color-gray-100);
}

.profile-course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.profile-course-card:hover .profile-course-thumbnail img {
    transform: scale(1.05);
}

.profile-course-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.profile-course-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-course-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.profile-course-meta i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

.profile-course-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-success);
    margin-top: var(--spacing-xs);
}

.profile-course-status-completed {
    color: var(--color-success);
}

.profile-course-progress {
    margin-top: var(--spacing-sm);
}

.profile-course-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.profile-course-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.profile-course-progress-text {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

/* Profile Certificates Card (Sidebar) */
.profile-certificates-card {
    padding: var(--spacing-xl);
}

.profile-certificates-grid-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.profile-certificate-card-sidebar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: white;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.profile-certificate-card-sidebar:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.profile-certificate-icon-sidebar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

.profile-certificate-card-sidebar:hover .profile-certificate-icon-sidebar {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.profile-certificate-content-sidebar {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.profile-certificate-title-sidebar {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-certificate-date-sidebar {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.profile-certificate-date-sidebar i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

/* Profile Certificates Grid (Main Content - kept for backward compatibility) */
.profile-certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.profile-certificate-card {
    display: block;
    text-decoration: none;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
}

.profile-certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.profile-certificate-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary-light);
}

.profile-certificate-card:hover::before {
    opacity: 1;
}

.profile-certificate-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    transition: all 0.3s ease;
}

.profile-certificate-card:hover .profile-certificate-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.profile-certificate-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: var(--line-height-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.profile-certificate-date {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.profile-certificate-date i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

/* Responsive Profile */
@media (max-width: 968px) {
    .profile-layout {
        grid-template-columns: 1fr;
    }
    
    .profile-sidebar {
        order: 2;
    }
    
    .profile-main-content {
        order: 1;
    }
    
    .profile-header-content-modern {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .profile-avatar-modern {
        margin-top: -60px;
        width: 120px;
        height: 120px;
    }
    
    .profile-courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .profile-certificates-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 640px) {
    .profile-cover-modern {
        height: 140px;
    }
    
    .profile-avatar-modern {
        width: 100px;
        height: 100px;
        margin-top: -50px;
    }
    
    .profile-name-modern {
        font-size: var(--font-size-2xl);
    }
    
    .profile-meta-modern {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .profile-courses-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-certificates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-badges-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-stat-item {
        padding: var(--spacing-sm);
    }
    
    .profile-stat-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 375px) {
    .profile-certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-course-thumbnail {
        height: 120px;
    }
    
    .profile-course-content {
        padding: var(--spacing-md);
    }
}

/* ============================================
   PREFERENCES PAGE REDESIGN
   ============================================ */

.preferences-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Preferences Section Card */
.preferences-section-card {
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .preferences-section-card {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.preferences-section-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

[data-theme="dark"] .preferences-section-card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    border-color: var(--color-primary-light);
}

.preferences-section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(99, 102, 241, 0.01) 100%);
    border-bottom: 1px solid var(--color-gray-200);
}

[data-theme="dark"] .preferences-section-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.08) 100%);
    border-bottom-color: var(--border-color);
}

.preferences-section-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.preferences-section-icon-appearance {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.preferences-section-icon-notifications {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.preferences-section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-xs) 0;
}

[data-theme="dark"] .preferences-section-title {
    color: var(--text-primary);
}

.preferences-section-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
}

[data-theme="dark"] .preferences-section-subtitle {
    color: var(--text-secondary);
}

.preferences-section-content {
    padding: var(--spacing-xl);
}

[data-theme="dark"] .preferences-section-content {
    background-color: var(--bg-secondary);
}

/* Preference Item */
.preference-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: white;
    transition: all 0.2s ease;
    margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .preference-item {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.preference-item:last-child {
    margin-bottom: 0;
}

.preference-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .preference-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.preference-item-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.preference-item-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    color: white;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--color-gray-400) 0%, var(--color-gray-500) 100%);
}

.preference-item-icon-email {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.preference-item-icon-push {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.preference-item-icon-achievement {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.preference-item-icon-reminder {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.preference-item-icon-announcement {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.preference-item-icon-message {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.preference-item-info {
    flex: 1;
    min-width: 0;
}

.preference-item-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
}

[data-theme="dark"] .preference-item-label {
    color: var(--text-primary);
}

.preference-item-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

[data-theme="dark"] .preference-item-description {
    color: var(--text-secondary);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-gray-300);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: var(--radius-full);
}

[data-theme="dark"] .toggle-slider {
    background-color: var(--color-gray-600);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.toggle-switch:hover .toggle-slider {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.toggle-switch input:focus + .toggle-slider {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

/* Preference Select */
.preference-item-select {
    align-items: flex-start;
}

.preference-select-wrapper {
    position: relative;
    flex-shrink: 0;
    min-width: 200px;
}

.preference-select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-900);
    background: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    appearance: none;
    cursor: pointer;
    transition: all 0.2s ease;
    padding-right: calc(var(--spacing-xl) + var(--spacing-md));
}

[data-theme="dark"] .preference-select {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.preference-select:hover {
    border-color: var(--color-primary-light);
}

[data-theme="dark"] .preference-select:hover {
    border-color: var(--color-primary-light);
}

.preference-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

[data-theme="dark"] .preference-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.preference-select-arrow {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    pointer-events: none;
}

[data-theme="dark"] .preference-select-arrow {
    color: var(--text-secondary);
}

/* Notification Preferences Grid */
.preferences-notifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.preference-item-notification {
    margin-bottom: 0;
}

/* Form Actions */
.preferences-form-actions {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

[data-theme="dark"] .preferences-form-actions {
    border-top-color: var(--border-color);
}

.preferences-form-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Responsive Preferences */
@media (max-width: 768px) {
    .preferences-section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .preferences-section-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }
    
    .preferences-notifications-grid {
        grid-template-columns: 1fr;
    }
    
    .preference-select-wrapper {
        min-width: 100%;
        margin-top: var(--spacing-sm);
    }
    
    .preference-item-select {
        flex-direction: column;
        align-items: stretch;
    }
    
    .preferences-form-actions {
        flex-direction: column;
    }
    
    .preferences-form-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .preferences-section-content {
        padding: var(--spacing-lg);
    }
    
    .preference-item {
        padding: var(--spacing-md);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .preference-item-content {
        width: 100%;
    }
    
    .toggle-switch {
        align-self: flex-end;
    }
    
    .preference-select-wrapper {
        width: 100%;
    }
}

/* ============================================
   Lesson View - Professional Redesign
   ============================================ */

/* ============================================
   Lesson View - Udemy/Coursera style (2-col layout)
   ============================================ */
.lesson-layout {
    display: flex;
    flex-direction: column;
    min-height: 0;
    width: 100%;
    box-sizing: border-box;
    background: var(--color-gray-50);
}

.lesson-header {
    flex-shrink: 0;
    background: var(--bg-secondary, #fff);
    border-bottom: 1px solid var(--color-gray-200);
}

.lesson-header-inner {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    max-width: 1600px;
    margin: 0 auto;
    flex-wrap: wrap;
    min-height: 2.5rem;
}

.lesson-breadcrumb {
    flex-shrink: 0;
}

.lesson-breadcrumb-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    line-height: 1.25;
    color: var(--color-gray-600);
    text-decoration: none;
}

.lesson-breadcrumb-link:hover {
    color: var(--color-primary);
}

.lesson-header-title {
    flex: 1;
    min-width: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    line-height: 1.25;
    color: var(--color-gray-900);
    margin: 0;
    padding: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lesson-header-progress-summary {
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    line-height: 1.25;
    color: var(--color-gray-600);
}

/* Thin 4px bar under header only - scoped so legacy 8px bar doesn't override */
.lesson-header .lesson-progress-bar {
    height: 4px;
    min-height: 4px;
    max-height: 4px;
    background: var(--color-gray-200);
    overflow: hidden;
    flex-shrink: 0;
}

.lesson-header .lesson-progress-bar-fill {
    height: 4px;
    min-height: 4px;
    max-height: 4px;
    background: var(--color-primary);
    transition: width 0.4s ease;
}

.lesson-layout-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg);
    max-width: 1600px;
    margin: 0 auto;
    flex: 1;
    min-height: 0;
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
    align-items: start;
}

.lesson-layout-grid > .lesson-main,
.lesson-layout-grid > .lesson-side-panel {
    min-width: 0;
}

.lesson-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.lesson-player-card {
    background: var(--color-gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.lesson-player-video-wrap {
    position: relative;
    aspect-ratio: 16 / 9;
    max-height: 70vh;
    background: #000;
}

.lesson-player-video-wrap .video-container {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.lesson-player-video-wrap .video-container video,
.lesson-video-el {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.lesson-player-pdf-wrap {
    display: flex;
    flex-direction: column;
}

.lesson-player-pdf-toolbar {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.lesson-player-pdf-wrap .pdf-container {
    flex: 1;
    min-height: 400px;
}

.lesson-pdf-iframe {
    width: 100%;
    min-height: 60vh;
    border: none;
}

/* Text lesson: light viewer (readable in light mode) */
.lesson-player-text-wrap {
    padding: var(--spacing-xl);
    background: var(--bg-secondary, #fff);
    min-height: 200px;
}

.lesson-player-text-content {
    max-width: 72ch;
    margin: 0 auto;
    line-height: 1.75;
    color: var(--color-gray-900);
}

.lesson-player-text-content.prose {
    font-size: var(--font-size-base);
}

.lesson-player-text-content p {
    margin: 0 0 1em;
    color: var(--color-gray-800);
}

.lesson-player-text-content p:last-child {
    margin-bottom: 0;
}

.lesson-player-text-content strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.lesson-player-text-content ul,
.lesson-player-text-content ol {
    margin: 0 0 1em;
    padding-left: 1.5em;
    color: var(--color-gray-800);
}

.lesson-player-text-content li {
    margin-bottom: 0.5em;
    color: var(--color-gray-800);
}

.lesson-player-text-content li::marker {
    color: var(--color-gray-600);
}

.lesson-player-text-content a {
    color: var(--color-primary);
    text-decoration: none;
}

.lesson-player-text-content a:hover {
    text-decoration: underline;
}

.lesson-player-text-content h1,
.lesson-player-text-content h2,
.lesson-player-text-content h3,
.lesson-player-text-content h4,
.lesson-player-text-content h5,
.lesson-player-text-content h6 {
    margin: 1em 0 0.5em;
    color: var(--color-gray-900);
    font-weight: var(--font-weight-semibold);
    line-height: 1.3;
}

.lesson-player-text-content h1 { font-size: 1.75rem; }
.lesson-player-text-content h2 { font-size: 1.5rem; }
.lesson-player-text-content h3 { font-size: 1.25rem; }
.lesson-player-text-content h4 { font-size: 1.125rem; }
.lesson-player-text-content h5,
.lesson-player-text-content h6 { font-size: 1rem; }

.lesson-player-text-content h1:first-child,
.lesson-player-text-content h2:first-child,
.lesson-player-text-content h3:first-child,
.lesson-player-text-content h4:first-child,
.lesson-player-text-content h5:first-child,
.lesson-player-text-content h6:first-child {
    margin-top: 0;
}

.lesson-player-text-content blockquote {
    margin: 0 0 1em;
    padding: 0.75em 1em;
    border-left: 4px solid var(--color-primary);
    background: var(--color-gray-50, #f9fafb);
    color: var(--color-gray-700);
}

.lesson-player-text-content blockquote p:last-child {
    margin-bottom: 0;
}

.lesson-player-text-content code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9em;
    background: var(--color-gray-100, #f3f4f6);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm, 4px);
}

.lesson-player-text-content pre {
    margin: 0 0 1em;
    padding: 1em;
    overflow-x: auto;
    background: var(--color-gray-100, #f3f4f6);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.lesson-player-text-content pre code {
    background: transparent;
    padding: 0;
    font-size: 0.875em;
}

.lesson-player-text-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 1em;
    font-size: 0.95em;
}

.lesson-player-text-content th,
.lesson-player-text-content td {
    border: 1px solid var(--color-gray-200);
    padding: 0.5em 0.75em;
    text-align: left;
}

.lesson-player-text-content th {
    background: var(--color-gray-50, #f9fafb);
    font-weight: var(--font-weight-semibold);
}

.lesson-player-text-content hr {
    border: 0;
    border-top: 1px solid var(--color-gray-200);
    margin: 1.5em 0;
}

.lesson-player-text-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 0.5em 0 1em;
}

.lesson-player-text-content ul ul,
.lesson-player-text-content ol ul,
.lesson-player-text-content ul ol,
.lesson-player-text-content ol ol {
    margin: 0.35em 0 0.5em;
}

.EasyMDEContainer {
    margin-top: 0;
}

.create-course-section:has(.EasyMDEContainer) {
    overflow: visible;
}

.EasyMDEContainer .CodeMirror {
    border-color: var(--color-gray-200);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    min-height: 280px;
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.EasyMDEContainer .editor-toolbar {
    border-color: var(--color-gray-200);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    background: var(--bg-secondary, #f9fafb);
}

.EasyMDEContainer .editor-toolbar button i {
    font-family: remixicon, sans-serif !important;
    font-size: 1.15rem;
    font-style: normal;
    font-weight: normal;
    display: inline-block;
    line-height: 1;
}

.EasyMDEContainer .editor-toolbar button:hover,
.EasyMDEContainer .editor-toolbar button.active {
    background: var(--bg-primary);
    border-color: var(--color-gray-200);
}

.EasyMDEContainer .editor-preview,
.EasyMDEContainer .editor-preview-side {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.EasyMDEContainer .editor-statusbar {
    color: var(--color-gray-500);
}

.lesson-player-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-500);
    text-align: center;
}

.lesson-player-empty i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.lesson-below-player {
    background: var(--bg-secondary, #fff);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.lesson-side-panel {
    position: sticky;
    top: calc(var(--header-height, 64px) + var(--spacing-md));
    align-self: start;
}

.lesson-side-panel-card {
    background: var(--bg-secondary, #fff);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.lesson-panel-heading {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-500);
    margin: 0 0 var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.lesson-panel-heading i {
    font-size: 1rem;
    opacity: 0.85;
}

.lesson-panel-section {
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
}

.lesson-panel-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.lesson-panel-body {
    padding-top: var(--spacing-xs);
}

/* Progress: stacked ring + label */
.lesson-progress-mini {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.lesson-progress-ring {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    position: relative;
}

.lesson-progress-ring-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.lesson-progress-ring-bg {
    fill: none;
    stroke: var(--color-gray-200);
    stroke-width: 4;
}

.lesson-progress-ring-fill {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 4;
    stroke-linecap: round;
    transition: stroke-dasharray 0.4s ease;
}

.lesson-progress-ring-value {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.lesson-progress-mini-text-wrap {
    text-align: center;
}

.lesson-progress-mini-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
}

.lesson-progress-mini-text strong {
    color: var(--color-gray-900);
    font-weight: var(--font-weight-semibold);
}

/* Navigation: tight row + full-width complete */
.lesson-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.lesson-actions-nav {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.lesson-actions-nav .lesson-btn-prev,
.lesson-actions-nav .lesson-btn-next {
    margin: 0;
    justify-content: center;
}

.lesson-actions-complete {
    width: 100%;
    margin-top: var(--spacing-xs);
}

.lesson-actions-complete .btn-complete {
    width: 100%;
    justify-content: center;
}

/* Course content list */
.lesson-outline {
    list-style: none;
    margin: 0;
    padding: 0;
}

.lesson-outline-item {
    margin: 0;
    border-radius: var(--radius-md);
}

.lesson-outline-item + .lesson-outline-item {
    margin-top: 2px;
}

.lesson-outline-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

a.lesson-outline-link:hover {
    background: var(--color-gray-50);
    color: var(--color-primary);
}

.lesson-outline-item.is-active .lesson-outline-link {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    background: rgba(99, 102, 241, 0.08);
}

.lesson-outline-item.is-complete .lesson-outline-link {
    color: var(--color-gray-600);
}

.lesson-outline-icon {
    color: var(--color-success);
    font-size: 1rem;
    flex-shrink: 0;
}

.lesson-outline-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    flex-shrink: 0;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    background: var(--color-gray-200);
    color: var(--color-gray-600);
    border-radius: var(--radius-full);
}

.lesson-outline-item.is-active .lesson-outline-num {
    background: var(--color-primary);
    color: #fff;
}

.lesson-outline-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lesson-outline-fallback {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0 0 var(--spacing-sm);
}

/* Quick actions: icon buttons */
.lesson-actions-icons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.lesson-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    background: var(--color-gray-50);
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.lesson-icon-btn:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.lesson-icon-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Override tabs when inside .lesson-below-player (no full-bleed) */
.lesson-below-player .lesson-tabs-modern {
    margin-top: 0;
    margin-left: 0;
    margin-right: 0;
    padding-left: 0;
    padding-right: 0;
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
}

.lesson-below-player .lesson-tab-content {
    padding-top: var(--spacing-md);
}

/* Responsive: stack below 1024px */
@media (max-width: 1023px) {
    .lesson-layout-grid {
        grid-template-columns: 1fr;
        padding: var(--spacing-md);
    }

    .lesson-side-panel {
        position: static;
    }
}

/* Responsive: panel accordions under 768px */
@media (max-width: 767px) {
    .lesson-header-inner {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .lesson-header-title {
        font-size: var(--font-size-base);
    }

    .lesson-panel-section {
        border-bottom: none;
        padding-bottom: 0;
    }

    .lesson-panel-heading {
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--spacing-sm) 0;
        margin: 0;
    }

    .lesson-panel-heading::after {
        content: '';
        width: 0;
        height: 0;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 6px solid currentColor;
        transition: transform 0.2s ease;
    }

    .lesson-panel-section.is-open .lesson-panel-heading::after {
        transform: rotate(180deg);
    }

    .lesson-panel-section .lesson-panel-body {
        overflow: hidden;
        transition: max-height 0.25s ease, opacity 0.2s ease;
    }

    .lesson-panel-section:not(.is-open) .lesson-panel-body {
        max-height: 0;
        opacity: 0;
        padding-top: 0;
        margin-top: 0;
    }

    .lesson-panel-section.is-open .lesson-panel-body {
        max-height: 500px;
    }

    .lesson-side-panel-card {
        padding: var(--spacing-md);
    }

    .lesson-below-player {
        padding: var(--spacing-md);
    }
}

/* Lesson Player Section (legacy / fallback) */
.lesson-player-section {
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--color-gray-900) 0%, #0a0a0a 100%);
    position: relative;
}

/* Progress Indicator Bar */
.lesson-progress-indicator {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) var(--spacing-xl);
}

.lesson-progress-indicator-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.lesson-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.lesson-progress-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lesson-progress-label i {
    font-size: var(--font-size-base);
    color: var(--color-primary-light);
}

.lesson-progress-value {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: white;
}

.lesson-progress-bar-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    min-width: 0;
}

.lesson-progress-bar-track {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.lesson-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.lesson-progress-percent {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: white;
    min-width: 45px;
    text-align: right;
}

.theater-wrapper {
    padding: var(--spacing-xl);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.video-container-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.video-container {
    width: 100%;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    aspect-ratio: 16 / 9;
    background: #000;
    position: relative;
}

/* Video Resume Hint */
.video-resume-hint {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    z-index: 10;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.video-resume-hint:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.video-resume-hint i {
    font-size: var(--font-size-lg);
    color: var(--color-primary-light);
}

.pdf-container-wrapper,
.text-container-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.video-container video,
.lesson-video-el {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.video-error-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-600);
    text-align: center;
    min-height: 300px;
}

.video-error-message i {
    font-size: 3rem;
    color: var(--color-error, #ef4444);
    margin-bottom: var(--spacing-md);
}

.video-error-message p {
    font-size: var(--font-size-lg);
    margin: 0;
}

.pdf-container,
.text-container {
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

.pdf-container iframe {
    min-height: 600px;
    width: 100%;
    border: none;
}

.text-container {
    padding: var(--spacing-2xl);
    line-height: 1.8;
}

/* Lesson Content Section */
.lesson-content-section {
    flex-shrink: 0;
    padding: var(--spacing-xl);
    background: var(--color-gray-50);
    position: relative;
}

/* Add subtle pattern to content section background */
.lesson-content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.lesson-content-section > * {
    position: relative;
    z-index: 1;
}

.lesson-content-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.lesson-content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.lesson-content-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
    border-color: var(--color-gray-300);
}

.lesson-content-card:hover::before {
    opacity: 1;
}

/* Modern Lesson Header */
.lesson-header-modern {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray-100);
    position: relative;
}

.lesson-header-modern::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary) 0%, transparent 100%);
}

.lesson-header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.lesson-header-left {
    flex: 1;
    min-width: 0;
}

.lesson-header-badges {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.lesson-type-badge-modern {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lesson-type-badge-modern i {
    font-size: var(--font-size-sm);
}

.lesson-type-badge-modern.lesson-type-video {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.lesson-type-badge-modern.lesson-type-pdf {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.lesson-type-badge-modern.lesson-type-text {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.lesson-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    background: var(--color-success-bg);
    color: var(--color-success);
}

.lesson-status-badge i {
    font-size: var(--font-size-sm);
}

.lesson-title-modern {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-md) 0;
    line-height: 1.3;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Fallback for browsers that don't support background-clip */
@supports not (-webkit-background-clip: text) {
    .lesson-title-modern {
        background: none;
        -webkit-text-fill-color: var(--color-gray-900);
        color: var(--color-gray-900);
    }
}

.lesson-description-modern {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
    margin: 0 0 var(--spacing-md) 0;
}

/* Lesson Meta Information */
.lesson-meta-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
    flex-wrap: wrap;
}

.lesson-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.lesson-meta-item i {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.lesson-meta-item strong {
    color: var(--color-gray-900);
    font-weight: var(--font-weight-semibold);
}

.lesson-status-badge.lesson-status-in-progress {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

.lesson-header-actions-modern {
    display: flex;
    gap: var(--spacing-md);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.btn-complete {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-complete::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-complete:hover::before {
    left: 100%;
}

.btn-complete:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

.btn-complete:active {
    transform: translateY(0);
}

.btn-complete i {
    font-size: var(--font-size-base);
}

.btn-complete-done {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 2px solid var(--color-success);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.15);
}

.btn-complete-done:hover {
    background: var(--color-success);
    color: white;
    border-color: var(--color-success);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Modern Tabs */
.lesson-tabs-modern {
    display: flex;
    gap: var(--spacing-lg);
    border-bottom: 2px solid var(--color-gray-200);
    margin-bottom: var(--spacing-xl);
    padding-bottom: 0;
    background: linear-gradient(to bottom, var(--color-gray-50) 0%, rgba(249, 250, 251, 0.5) 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-top: calc(-1 * var(--spacing-xl));
    margin-left: calc(-1 * var(--spacing-2xl));
    margin-right: calc(-1 * var(--spacing-2xl));
    padding-left: var(--spacing-2xl);
    padding-right: var(--spacing-2xl);
    position: relative;
}

.lesson-tab-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: -2px;
    position: relative;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.lesson-tab-item:hover {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.05);
}

.lesson-tab-item.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    background: white;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.lesson-tab-item i {
    font-size: var(--font-size-lg);
}

.lesson-tab-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--spacing-xs);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    margin-left: var(--spacing-xs);
}

.lesson-tab-content {
    display: none;
}

.lesson-tab-content.active {
    display: block;
}

/* Notes & Bookmarks tab */
.lesson-notes-bookmarks-modern {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.lesson-notes-bookmarks-loading,
.lesson-notes-bookmarks-error {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-500);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.lesson-notes-bookmarks-loading i,
.lesson-notes-bookmarks-error i {
    font-size: 2rem;
}

.lesson-notes-section,
.lesson-bookmarks-section {
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
}

.lesson-notes-heading,
.lesson-bookmarks-heading {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.lesson-note-card {
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.lesson-note-content {
    font-size: var(--font-size-sm);
    color: var(--color-gray-800);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    white-space: pre-wrap;
}

.lesson-note-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.lesson-no-note,
.lesson-no-bookmarks {
    margin: 0 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.lesson-bookmarks-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.lesson-bookmark-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    gap: var(--spacing-md);
}

.lesson-bookmark-item.lesson-bookmark-seek {
    cursor: pointer;
}

.lesson-bookmark-item.lesson-bookmark-seek:hover {
    border-color: var(--color-primary-light);
    background: rgba(99, 102, 241, 0.04);
}

.lesson-bookmark-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
    flex: 1;
}

.lesson-bookmark-time {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

.lesson-bookmark-note {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
}

/* Q&A Section */
.lesson-qa-list-modern {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.lesson-qa-loading-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-500);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.lesson-qa-loading-state i {
    font-size: var(--font-size-4xl);
    animation: spin 1s linear infinite;
    color: var(--color-primary);
}

.lesson-qa-loading-state p {
    margin: 0;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.lesson-qa-empty,
.lesson-qa-error {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-500);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.lesson-qa-empty i,
.lesson-qa-error i {
    font-size: var(--font-size-4xl);
    color: var(--color-gray-400);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
}

.lesson-qa-empty p,
.lesson-qa-error p {
    margin: 0;
    font-size: var(--font-size-base);
    max-width: 400px;
}

.lesson-qa-item {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.lesson-qa-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.1);
}

.lesson-qa-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.lesson-qa-item-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.lesson-qa-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
    flex-shrink: 0;
}

.lesson-qa-avatar-sm {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
}

.lesson-qa-author-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.lesson-qa-author-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.lesson-qa-date {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.lesson-qa-delete-btn {
    padding: var(--spacing-xs);
    background: transparent;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.lesson-qa-delete-btn:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.lesson-qa-question {
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.lesson-qa-answers {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.lesson-qa-answer {
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.lesson-qa-answer-accepted {
    border-color: var(--color-success);
    background: var(--color-success-bg);
}

.lesson-qa-answer-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.lesson-qa-answer-badges {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lesson-qa-accepted-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-success);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.lesson-qa-accept-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lesson-qa-accept-btn:hover {
    background: var(--color-success);
    color: white;
}

.lesson-qa-answer-content {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    line-height: 1.6;
}

.lesson-qa-reply {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.lesson-qa-reply-form {
    display: flex;
    gap: var(--spacing-sm);
}

.lesson-qa-reply-input-wrapper {
    flex: 1;
    display: flex;
    gap: var(--spacing-xs);
    background: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.lesson-qa-reply-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.lesson-qa-reply-input {
    flex: 1;
    border: none;
    outline: none;
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
    background: transparent;
}

.lesson-qa-reply-btn {
    padding: var(--spacing-sm);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lesson-qa-reply-btn:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
}

/* Ask Question Block */
.lesson-ask-block-modern {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, rgba(99, 102, 241, 0.05) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-primary-light);
    position: relative;
    overflow: hidden;
}

.lesson-ask-block-modern::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.lesson-ask-block-modern > * {
    position: relative;
    z-index: 1;
}

.lesson-ask-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.lesson-ask-header i {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.lesson-ask-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin: 0;
}

.lesson-ask-form-modern {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group-modern {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-textarea-modern {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-family: inherit;
    resize: vertical;
    transition: all var(--transition-fast);
    min-height: 120px;
    background: white;
}

.form-textarea-modern:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-bg);
    transform: translateY(-1px);
}

.lesson-instructor-hint-modern {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background: var(--color-info-bg);
    border-left: 4px solid var(--color-info);
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.lesson-instructor-hint-modern i {
    font-size: var(--font-size-lg);
    color: var(--color-info);
    flex-shrink: 0;
    margin-top: 2px;
}

.lesson-instructor-hint-modern p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.lesson-instructor-hint-modern a {
    color: var(--color-info);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
}

.lesson-instructor-hint-modern a:hover {
    text-decoration: underline;
}

/* Resources Section */
.lesson-resources-modern {
    padding: var(--spacing-xl) 0;
}

.lesson-resources-empty {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-gray-500);
}

.lesson-resources-empty i {
    font-size: var(--font-size-4xl);
    display: block;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-400);
}

/* Lesson Navigation - Enhanced Professional Design */
.lesson-nav-modern {
    flex-shrink: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.98) 0%, white 100%);
    border-top: 1px solid var(--color-gray-200);
    padding: var(--spacing-xl);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.04);
    position: relative;
    margin-top: var(--spacing-2xl);
}

.lesson-nav-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--color-primary-light) 50%, transparent 100%);
    opacity: 0.5;
}

.lesson-nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.lesson-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: white;
    border: 1.5px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: var(--color-gray-700);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex: 1;
    max-width: 320px;
    position: relative;
    overflow: hidden;
}

.lesson-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.05), transparent);
    transition: left 0.5s;
}

.lesson-nav-btn:hover::before {
    left: 100%;
}

.lesson-nav-btn:hover {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, rgba(99, 102, 241, 0.03) 100%);
    color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.2);
}

.lesson-nav-btn i {
    font-size: var(--font-size-xl);
    transition: transform var(--transition-base);
    flex-shrink: 0;
    color: var(--color-gray-400);
}

.lesson-nav-btn:hover i {
    color: var(--color-primary);
    transform: scale(1.1);
}

.lesson-nav-prev:hover i {
    transform: translateX(-3px) scale(1.1);
}

.lesson-nav-next:hover i {
    transform: translateX(3px) scale(1.1);
}

.lesson-nav-btn-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.lesson-nav-btn-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-400);
    transition: color var(--transition-base);
}

.lesson-nav-btn-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.4;
    transition: color var(--transition-base);
}

.lesson-nav-btn:hover .lesson-nav-btn-label {
    color: var(--color-primary);
}

.lesson-nav-btn:hover .lesson-nav-btn-title {
    color: var(--color-primary);
}

.lesson-nav-prev {
    text-align: left;
}

.lesson-nav-next {
    text-align: right;
    flex-direction: row-reverse;
}

.lesson-nav-center-modern {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-gray-600);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--color-gray-50);
    border: 1.5px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
}

.lesson-nav-center-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s;
}

.lesson-nav-center-modern:hover::before {
    left: 100%;
}

.lesson-nav-center-modern:hover {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, rgba(99, 102, 241, 0.05) 100%);
    color: var(--color-primary);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.lesson-nav-center-modern i {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-base);
}

.lesson-nav-center-modern:hover i {
    transform: scale(1.1);
}

/* Dark Mode Support */
[data-theme="dark"] .lesson-player-section {
    background: linear-gradient(180deg, var(--color-gray-900) 0%, #000 100%);
}

[data-theme="dark"] .lesson-player-text-wrap {
    background: var(--bg-secondary);
}

[data-theme="dark"] .lesson-player-text-content,
[data-theme="dark"] .lesson-player-text-content p,
[data-theme="dark"] .lesson-player-text-content li {
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-player-text-content strong,
[data-theme="dark"] .lesson-player-text-content h1,
[data-theme="dark"] .lesson-player-text-content h2,
[data-theme="dark"] .lesson-player-text-content h3 {
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-player-text-content li::marker {
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-player-text-content a {
    color: var(--color-primary-light);
}

[data-theme="dark"] .lesson-progress-indicator {
    background: rgba(255, 255, 255, 0.03);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .lesson-content-section {
    background: var(--bg-primary);
}

[data-theme="dark"] .lesson-content-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .lesson-content-card::before {
    background: linear-gradient(90deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
}

[data-theme="dark"] .lesson-header {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .lesson-breadcrumb-link {
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-header-title {
    color: var(--text-primary);
}
[data-theme="dark"] .lesson-header-progress-summary {
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-header .lesson-progress-bar {
    background: var(--bg-tertiary);
}
[data-theme="dark"] .lesson-side-panel-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}
[data-theme="dark"] .lesson-panel-heading {
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-progress-mini-text {
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-progress-mini-text strong {
    color: var(--text-primary);
}
[data-theme="dark"] .lesson-progress-ring-value {
    color: var(--color-primary);
}
[data-theme="dark"] .lesson-progress-ring-bg {
    stroke: var(--border-color);
}
[data-theme="dark"] .lesson-outline-item.is-active .lesson-outline-link {
    background: rgba(99, 102, 241, 0.15);
}
[data-theme="dark"] .lesson-icon-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-icon-btn:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
[data-theme="dark"] .lesson-below-player {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}
[data-theme="dark"] .lesson-outline-link {
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-outline-item.is-active .lesson-outline-link {
    color: var(--color-primary);
}
[data-theme="dark"] .lesson-outline-num {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}
[data-theme="dark"] .lesson-outline-fallback {
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-content-section::before {
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
}

[data-theme="dark"] .lesson-tabs-modern {
    background: linear-gradient(to bottom, var(--bg-tertiary) 0%, rgba(0, 0, 0, 0.2) 100%);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .lesson-nav-modern {
    background: linear-gradient(to bottom, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-top-color: var(--border-color);
}

[data-theme="dark"] .lesson-nav-modern::before {
    background: linear-gradient(90deg, transparent 0%, var(--color-primary-light) 50%, transparent 100%);
    opacity: 0.3;
}

[data-theme="dark"] .lesson-nav-btn {
    background: var(--bg-primary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-nav-btn-title {
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-nav-btn-label {
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-nav-btn i {
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-nav-center-modern {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-tabs-modern {
    background: var(--bg-tertiary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .lesson-tab-item.active {
    background: var(--bg-secondary);
}

[data-theme="dark"] .lesson-ask-block-modern {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--color-primary-light);
}

[data-theme="dark"] .lesson-meta-info {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .lesson-meta-item {
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-meta-item strong {
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-title-modern {
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-description-modern {
    color: var(--text-secondary);
}

[data-theme="dark"] .lesson-qa-item {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .lesson-qa-question {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .lesson-qa-answer {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .lesson-qa-reply-input-wrapper {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

/* Dark mode rules already defined above */

/* Video Resume Functionality */
.video-container video {
    cursor: pointer;
}

.video-resume-hint {
    animation: fadeInSlide 0.3s ease-out;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.video-resume-hint.hiding {
    opacity: 0;
    transform: translateY(-10px);
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Enhanced Button Styles */
.btn-complete span {
    display: inline-block;
}

.btn-complete i {
    display: inline-flex;
    align-items: center;
}

/* Improved Q&A Cards */
.lesson-qa-item {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Student-Friendly Enhancements */
.lesson-content-card {
    position: relative;
}

.lesson-content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.lesson-content-card:hover::before {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .lesson-content-card {
        padding: var(--spacing-xl);
    }

    .lesson-title-modern {
        font-size: var(--font-size-2xl);
    }

    .theater-wrapper {
        padding: var(--spacing-md);
    }

    .lesson-progress-indicator {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .lesson-progress-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .lesson-progress-bar-wrapper {
        width: 100%;
    }

    .lesson-meta-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .lesson-tabs-modern {
        margin-left: calc(-1 * var(--spacing-xl));
        margin-right: calc(-1 * var(--spacing-xl));
        padding-left: var(--spacing-xl);
        padding-right: var(--spacing-xl);
        flex-wrap: wrap;
    }

    .lesson-ask-block-modern {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .lesson-progress-indicator-content {
        gap: var(--spacing-xs);
    }

    .lesson-progress-label,
    .lesson-progress-value {
        font-size: var(--font-size-xs);
    }

    .lesson-title-modern {
        font-size: var(--font-size-xl);
    }

    .lesson-header-top {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .lesson-header-actions-modern {
        width: 100%;
    }

    .lesson-header-actions-modern .btn {
        width: 100%;
        justify-content: center;
    }

    .video-resume-hint {
        top: var(--spacing-xs);
        right: var(--spacing-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 768px) {
    .lesson-header-top {
        flex-direction: column;
        align-items: stretch;
    }

    .lesson-header-actions-modern {
        width: 100%;
    }

    .lesson-header-actions-modern .btn {
        flex: 1;
        justify-content: center;
    }

    .lesson-nav-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .lesson-nav-btn {
        max-width: 100%;
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .lesson-nav-btn-title {
        font-size: var(--font-size-sm);
    }

    .lesson-nav-center-modern {
        order: -1;
        width: 100%;
        justify-content: center;
    }

    .video-container {
        border-radius: var(--radius-md);
    }
}

/* ============================================
   Admin – Invoices listing
   ============================================ */

.invoices-page {
    max-width: 1400px;
}

.invoices-page-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.invoices-page-header-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(34, 139, 34, 0.12), rgba(34, 139, 34, 0.06));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.invoices-page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.invoices-page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.invoice-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.invoice-stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.invoice-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.invoice-stat-icon--blue {
    background: rgba(59, 130, 246, 0.12);
    color: #2563eb;
}

.invoice-stat-icon--green {
    background: rgba(34, 197, 94, 0.12);
    color: #16a34a;
}

.invoice-stat-icon--orange {
    background: rgba(249, 115, 22, 0.12);
    color: #ea580c;
}

.invoice-stat-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.invoice-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.invoice-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.invoice-filters-card {
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
}

.invoice-filters-form {
    width: 100%;
}

.invoice-filters-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-lg);
}

.invoice-filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 140px;
}

.invoice-filter-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
}

.invoice-filter-input {
    width: 100%;
    min-width: 0;
}

.invoice-filter-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: auto;
}

.invoice-table-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.invoice-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.invoice-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.invoice-th {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--color-gray-200);
    background: var(--bg-secondary);
}

.invoice-th--num,
.invoice-th--actions {
    text-align: right;
}

.invoice-th--date {
    white-space: nowrap;
}

.invoice-td {
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

.invoice-tr:last-child .invoice-td {
    border-bottom: none;
}

.invoice-table tbody .invoice-tr:hover {
    background: var(--color-gray-50);
}

.invoice-th--id { width: 1%; white-space: nowrap; }
.invoice-td--num { text-align: right; }
.invoice-td--date { white-space: nowrap; }
.invoice-td--actions { text-align: right; }

.invoice-id {
    font-family: ui-monospace, monospace;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.invoice-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.invoice-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
    color: #4338ca;
    font-size: var(--font-size-sm);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.invoice-user-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.invoice-user-name {
    font-weight: 500;
    color: var(--text-primary);
}

.invoice-user-email {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.invoice-course {
    color: var(--text-primary);
}

.invoice-course--na {
    color: var(--text-secondary);
    font-style: italic;
}

.invoice-amount,
.invoice-tax {
    color: var(--text-primary);
}

.invoice-total {
    font-weight: 600;
    color: var(--text-primary);
}

.invoice-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
}

.invoice-date-icon {
    color: var(--text-secondary);
    opacity: 0.8;
}

.invoice-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}

.invoice-btn--pdf {
    background: var(--color-primary);
    color: white;
}

.invoice-btn--pdf:hover {
    background: var(--color-primary-dark);
    color: white;
}

.invoice-btn--disabled {
    background: var(--color-gray-100);
    color: var(--text-secondary);
    cursor: not-allowed;
    border: none;
}

.invoice-empty {
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-xl) !important;
}

.invoice-empty-icon {
    font-size: 3rem;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-md);
}

.invoice-empty-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.invoice-empty-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.invoice-pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    background: var(--bg-secondary);
}

.invoice-pagination-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.invoice-pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.invoice-pagination-btn:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
    color: var(--text-primary);
}

.invoice-pagination-btn--current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    cursor: default;
}

.invoice-pagination-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

@media (max-width: 768px) {
    .invoice-stats-grid {
        grid-template-columns: 1fr;
    }

    .invoice-filter-actions {
        margin-left: 0;
        width: 100%;
    }

    .invoice-filters-row {
        flex-direction: column;
        align-items: stretch;
    }

    .invoice-filter-group {
        min-width: 0;
    }
}

/* ============================================
   Shared Dashboard Components (SaaS-style)
   ============================================ */

/* A) KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.kpi-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.kpi-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.kpi-card-inner {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.kpi-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.kpi-icon--primary { background: rgba(99, 102, 241, 0.12); color: var(--color-primary); }
.kpi-icon--success { background: rgba(16, 185, 129, 0.12); color: var(--color-success); }
.kpi-icon--warning { background: rgba(245, 158, 11, 0.12); color: var(--color-warning); }
.kpi-icon--info { background: rgba(59, 130, 246, 0.12); color: var(--color-info); }
.kpi-icon--streak { background: rgba(245, 158, 11, 0.12); color: #ea580c; }

.kpi-content {
    flex: 1;
    min-width: 0;
}

.kpi-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.kpi-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.kpi-subtext {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* B) Chart Cards */
.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.chart-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    transition: box-shadow var(--transition-fast);
}

.chart-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.chart-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.chart-range {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.chart-body {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-body canvas {
    max-width: 100%;
    max-height: 240px;
}

.chart-body-continue {
    justify-content: flex-start;
    align-items: stretch;
}

.chart-body > .dashboard-announcements-list,
.chart-body > .dashboard-tools-grid,
.chart-body > .quick-actions-grid,
.chart-body > .admin-dashboard-table-wrap,
.chart-body > .notif-list {
    width: 100%;
    align-self: flex-start;
}

/* C) Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    color: var(--color-gray-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.empty-state-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-lg) 0;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state .btn {
    margin-top: var(--spacing-sm);
}

.empty-state-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.empty-state-actions .btn {
    margin-top: 0;
}

.kpi-card-link {
    text-decoration: none;
    color: inherit;
}

.kpi-card-link:hover {
    color: inherit;
}

/* Continue Learning card */
.continue-learning-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
    width: 100%;
    text-align: left;
}

.continue-learning-card:hover {
    background: var(--color-gray-100);
}

.continue-learning-thumb {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-gray-500);
    flex-shrink: 0;
}

.continue-learning-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.continue-learning-info {
    flex: 1;
    min-width: 0;
}

.continue-learning-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.continue-learning-progress {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.progress-bar {
    display: block;
    height: 6px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-top: var(--spacing-xs);
}

.progress-fill {
    display: block;
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.continue-learning-card > i {
    font-size: 1.25rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

[data-theme="dark"] .continue-learning-card {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .continue-learning-card:hover {
    background: var(--border-color);
}

/* Dashboard page header */
.dashboard-page-header {
    margin-bottom: var(--spacing-xl);
}

.dashboard-page-header-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.dashboard-page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.dashboard-page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
}

/* Quick actions row */
.quick-actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.chart-card .quick-actions-row {
    padding: var(--spacing-md) 0;
}

.quick-actions-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.quick-actions-grid .btn {
    flex: 1;
    min-width: 160px;
    justify-content: center;
}

/* Responsive */
@media (max-width: 1024px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .chart-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
}

/* Dark mode */
[data-theme="dark"] .kpi-card,
[data-theme="dark"] .chart-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .empty-state-icon {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* ============================================
   Student Dashboard (corporate SaaS)
   ============================================ */
.student-dashboard {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
}

.dashboard-hero-compact {
    background: var(--bg-secondary, var(--color-gray-50));
    border: 1px solid var(--border-color, var(--color-gray-200));
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    min-height: 96px;
    display: flex;
    align-items: center;
}

.dashboard-hero-compact-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    width: 100%;
    flex-wrap: wrap;
}

.dashboard-hero-compact-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 0;
}

.dashboard-hero-compact-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.dashboard-hero-compact-avatar-placeholder {
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.dashboard-hero-compact-text {
    min-width: 0;
}

.dashboard-hero-compact-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 2px 0;
}

.dashboard-hero-compact-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.dashboard-hero-compact-status {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    margin: var(--spacing-xs) 0 0 0;
}

.dashboard-hero-compact-right {
    flex-shrink: 0;
}

.dashboard-kpi-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.dashboard-kpi-row .kpi-card {
    padding: var(--spacing-md) var(--spacing-lg);
}

.dashboard-kpi-row .kpi-subtext {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.dashboard-grid-12 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.dashboard-widget-main {
    min-width: 0;
}

.dashboard-widget-side {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    min-width: 0;
}

.dashboard-card-continue .chart-body-continue-compact {
    min-height: 0;
    padding: 0;
}

.chart-body-mini {
    min-height: 0;
    align-items: flex-start;
    justify-content: flex-start;
}

.chart-body-notifications {
    min-height: 0;
    padding: 0;
    align-items: stretch;
    justify-content: flex-start;
}

.dashboard-card-announcements .chart-body,
.dashboard-card-upcoming .chart-body {
    min-height: 0;
}

.mini-inbox {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

.mini-inbox-item {
    margin: 0;
    padding: 0;
    border-bottom: 1px solid var(--border-color, var(--color-gray-200));
}

.mini-inbox-item:last-child {
    border-bottom: none;
}

.mini-inbox-link {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    text-decoration: none;
    color: inherit;
    transition: background var(--transition-fast);
    border-radius: var(--radius-sm);
}

.mini-inbox-link:hover {
    background: var(--color-gray-50);
}

.mini-inbox-icon {
    flex-shrink: 0;
    width: 24px;
    color: var(--color-gray-500);
    font-size: 0.95rem;
}

.mini-inbox-title {
    flex: 1;
    min-width: 0;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.mini-inbox-meta {
    flex-shrink: 0;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.mini-inbox-view-all {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.mini-inbox-empty,
.upcoming-deadlines-empty {
    text-align: center;
    padding: var(--spacing-md);
}

.mini-inbox-empty-text,
.upcoming-deadlines-empty-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-sm) 0;
}

.quick-actions-compact {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.quick-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.quick-action-btn:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-900);
}

.quick-action-btn i {
    font-size: 1.1rem;
}

.quick-action-badge {
    display: none;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    font-size: 0.7rem;
    border-radius: var(--radius-full);
}

.dashboard-quick-actions-compact .chart-card {
    padding: var(--spacing-lg);
}

.continue-learning-block {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.continue-learning-card-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.continue-learning-lesson {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xs) 0;
}

.continue-learning-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.empty-state-compact.continue-learning-empty {
    padding: var(--spacing-lg);
}

.empty-state-icon-compact {
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
}

.empty-state-compact .empty-state-title {
    font-size: var(--font-size-base);
}

.empty-state-compact .empty-state-subtitle {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

@media (max-width: 1024px) {
    .dashboard-grid-12 {
        grid-template-columns: 1fr;
    }
    .dashboard-kpi-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .dashboard-hero-compact-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .dashboard-hero-compact {
        min-height: 0;
        padding: var(--spacing-md);
    }
    .dashboard-kpi-row {
        grid-template-columns: 1fr;
    }
    .quick-actions-compact {
        gap: var(--spacing-xs);
    }
    .quick-action-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 480px) {
    .dashboard-hero-compact-left {
        flex-wrap: wrap;
    }
}

[data-theme="dark"] .dashboard-hero-compact {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .dashboard-hero-compact-title {
    color: var(--text-primary);
}

[data-theme="dark"] .dashboard-hero-compact-subtitle,
[data-theme="dark"] .dashboard-hero-compact-status {
    color: var(--text-secondary);
}

[data-theme="dark"] .mini-inbox-link:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .quick-action-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .quick-action-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.kpi-card-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.quick-action-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   SaaS Table / List System
   ============================================ */

/* A) Table Card */
.table-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.table-card-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
}

.table-card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.table-card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.table-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

/* B) Filters row */
.table-filters {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.table-filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.table-filter-group label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.table-filter,
.table-filter-group input,
.table-filter-group select {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-width: 140px;
}

.table-filter:focus,
.table-filter-group input:focus,
.table-filter-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.table-filter-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* C) Table container */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table.ui-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

table.ui-table thead th {
    position: sticky;
    top: 0;
    z-index: 1;
    text-align: left;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-size: var(--font-size-xs);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--color-gray-200);
}

table.ui-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}

table.ui-table tbody tr:hover {
    background: var(--color-gray-50);
}

table.ui-table.ui-table-zebra tbody tr:nth-child(even) {
    background: var(--color-gray-50);
}

table.ui-table.ui-table-zebra tbody tr:nth-child(even):hover {
    background: var(--color-gray-100);
}

.cell-muted {
    color: var(--text-secondary);
}

/* Admin FAQ Management */
.admin-faq-question-link {
    color: var(--color-gray-900);
    text-decoration: none;
}

.admin-faq-question-link:hover {
    color: var(--color-primary);
}

.admin-faq-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
}

.admin-faq-badge-published {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.admin-faq-badge-draft {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.admin-faq-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.admin-faq-delete-form {
    display: inline;
}

.admin-faq-delete-form .btn-error {
    color: var(--color-error);
}

.admin-faq-delete-form .btn-error:hover {
    background: rgba(239, 68, 68, 0.1);
}

.cell-mono {
    font-family: ui-monospace, monospace;
    font-size: var(--font-size-xs);
}

/* D) Pagination */
.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
}

.pagination a,
.pagination button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    text-decoration: none;
    border: 1px solid var(--color-gray-200);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.pagination a:hover:not(.pagination-active):not([aria-disabled="true"]),
.pagination button:hover:not(:disabled) {
    background: var(--color-gray-100);
    border-color: var(--color-gray-300);
}

.pagination-active,
.pagination .pagination-active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.pagination a[aria-disabled="true"],
.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Table card body */
.table-card-body {
    padding: 0;
}

.table-card-body.table-card-body-padded {
    padding: var(--spacing-xl);
}

.table-filter-row {
    display: flex;
    gap: var(--spacing-xs);
}

/* Responsive table */
@media (max-width: 768px) {
    .table-wrap {
        margin: 0 calc(-1 * var(--spacing-lg));
        padding: 0 var(--spacing-lg);
    }

    .table-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .table-filter-group {
        min-width: 0;
    }

    .table-filter,
    .table-filter-group input,
    .table-filter-group select {
        min-width: 0;
        width: 100%;
    }

    .table-filter-actions {
        justify-content: flex-start;
    }
}

/* Dark mode */
[data-theme="dark"] .table-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .table-card-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] table.ui-table thead th {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] table.ui-table td {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] table.ui-table tbody tr:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] table.ui-table.ui-table-zebra tbody tr:nth-child(even) {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .table-filters {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .pagination {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .pagination a,
[data-theme="dark"] .pagination button {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .pagination a:hover:not(.pagination-active),
[data-theme="dark"] .pagination button:hover:not(:disabled) {
    background: var(--bg-tertiary);
}

/* ============================================
   Admin System Logs (audit console)
   ============================================ */
.table-filters-compact {
    margin-bottom: 0;
    padding: var(--spacing-md) var(--spacing-xl);
}

.table-filters-compact .table-filter-actions {
    margin-left: auto;
}

.table-filter-group-dates .table-filter-date-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.table-filter-date-sep {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.table-filter-date {
    min-width: 120px;
}

.log-active-filters {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-100);
}

/* Dense table */
table.ui-table.ui-table-dense thead th,
table.ui-table.ui-table-dense td {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
}

table.ui-table.ui-table-logs tbody tr.log-row {
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

table.ui-table.ui-table-logs tbody tr.log-row:hover {
    background: var(--color-gray-50);
}

table.ui-table.ui-table-logs tbody tr.log-row:focus {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--color-primary);
}

table.ui-table.ui-table-logs tbody tr.log-row[data-has-details="0"] {
    cursor: default;
}

.th-details {
    width: 72px;
    text-align: center;
}

.log-cell-time {
    white-space: nowrap;
}

.log-cell-details {
    text-align: center;
}

.log-meta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
}

.log-meta i {
    font-size: 0.9em;
    opacity: 0.8;
}

.log-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.log-user-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: var(--color-primary-muted, rgba(99, 102, 241, 0.15));
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.log-user-info {
    display: flex;
    flex-direction: column;
    gap: 0;
    min-width: 0;
}

.log-user-name {
    font-weight: 500;
    color: var(--text-primary);
}

.log-user-email {
    font-size: 0.7rem;
    line-height: 1.2;
}

.log-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: var(--font-weight-medium);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.log-badge-action {
    background: var(--color-primary-muted, rgba(99, 102, 241, 0.12));
    color: var(--color-primary);
}

.log-badge-neutral {
    background: var(--color-gray-100);
    color: var(--text-secondary);
}

.log-badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.log-entity {
    font-size: var(--font-size-xs);
}

.log-ip {
    font-family: ui-monospace, monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--color-gray-50);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* Icon button */
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover {
    background: var(--color-gray-100);
    color: var(--text-primary);
}

.icon-btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.icon-btn-sm {
    width: 28px;
    height: 28px;
    font-size: 1rem;
}

.log-details-trigger:focus,
.log-details-drawer-close:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

/* Log details drawer */
.log-details-drawer {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
    visibility: hidden;
}

.log-details-drawer[aria-hidden="false"] {
    pointer-events: auto;
    visibility: visible;
}

.log-details-drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.log-details-drawer[aria-hidden="false"] .log-details-drawer-backdrop {
    opacity: 1;
}

.log-details-drawer-panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 420px;
    background: var(--bg-primary, #fff);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.25s ease;
}

.log-details-drawer[aria-hidden="false"] .log-details-drawer-panel {
    transform: translateX(0);
}

.log-details-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-100);
}

.log-details-drawer-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.log-details-drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

.log-details-meta {
    display: grid;
    gap: var(--spacing-sm);
    margin: 0 0 var(--spacing-lg) 0;
    font-size: var(--font-size-sm);
}

.log-details-meta dt {
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0;
}

.log-details-meta dd {
    margin: 0 0 0 var(--spacing-md);
    color: var(--text-primary);
}

.log-details-json-wrap {
    margin-top: var(--spacing-md);
}

.log-details-json-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.code-block {
    font-family: ui-monospace, monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    margin: 0;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--text-primary);
}

@media (max-width: 640px) {
    .log-details-drawer-panel {
        max-width: 100%;
    }
}

[data-theme="dark"] .log-active-filters {
    border-top-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] table.ui-table.ui-table-logs tbody tr.log-row:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .log-user-avatar {
    background: var(--color-primary-muted);
    color: var(--color-primary);
}

[data-theme="dark"] .log-ip {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .icon-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .log-details-drawer-panel {
    background: var(--bg-secondary);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .log-details-drawer-header {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .code-block {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* ============================================
   Quiz Player (Take Quiz – assessment UI)
   ============================================ */
.quiz-player-page {
    padding-bottom: 0;
}

.quiz-player-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.quiz-player-header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.quiz-header-left {
    min-width: 0;
}

.quiz-player-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 2px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.quiz-player-meta {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.quiz-header-center {
    flex: 1;
    min-width: 0;
    max-width: 320px;
    margin: 0 var(--spacing-lg);
}

.quiz-progress-wrap {
    height: 6px;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.quiz-progress-bar {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.quiz-progress-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin: 0;
}

.quiz-header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.quiz-timer-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.12);
    border-radius: var(--radius-full);
}

.quiz-timer-chip.quiz-timer-warning {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.12);
}

.quiz-player-exit {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
}

.quiz-player-exit:hover {
    color: var(--color-primary);
}

.quiz-player-main {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    padding-bottom: 100px;
}

.quiz-player-form {
    margin-bottom: 0;
}

.question-container {
    animation: quizFadeIn 0.25s ease-out;
}

.question-container.hidden {
    display: none !important;
}

@keyframes quizFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.quiz-card {
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    padding: var(--spacing-xl);
}

.quiz-question {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.quiz-question-num {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--color-primary-muted, rgba(99, 102, 241, 0.12));
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.quiz-question-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.4;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
    background: var(--bg-primary);
}

.quiz-option:hover {
    border-color: var(--color-gray-300);
    background: var(--color-gray-50);
}

.quiz-option:focus-within {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.quiz-option-selected,
.quiz-option:has(.quiz-option-radio:checked) {
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.06);
}

.quiz-option-radio {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.quiz-option-indicator {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-gray-300);
    flex-shrink: 0;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.quiz-option-selected .quiz-option-indicator,
.quiz-option:has(.quiz-option-radio:checked) .quiz-option-indicator {
    border-color: var(--color-primary);
    background: var(--color-primary);
    box-shadow: inset 0 0 0 2px var(--bg-primary);
}

.quiz-option-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.quiz-action-bar {
    position: sticky;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 30;
    background: var(--bg-primary);
    border-top: 1px solid var(--color-gray-200);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.06);
    padding: var(--spacing-md) var(--spacing-xl);
}

.quiz-action-bar-inner {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.quiz-action-bar .btn.hidden {
    display: none !important;
}

.quiz-action-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.quiz-player-footer {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    padding-top: 0;
}

.quiz-previous-attempts {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    background: var(--color-gray-50);
}

.quiz-previous-summary {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quiz-previous-summary::-webkit-details-marker {
    display: none;
}

.quiz-attempts-list {
    padding: 0 var(--spacing-lg) var(--spacing-md);
}

.quiz-attempt-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.quiz-attempt-item:last-child {
    border-bottom: none;
}

.quiz-attempt-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.quiz-attempt-score {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.quiz-attempt-passed {
    color: var(--color-success);
}

.quiz-attempt-failed {
    color: var(--color-error);
}

.quiz-attempt-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .quiz-player-header-inner {
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .quiz-header-center {
        max-width: none;
        margin: 0;
    }

    .quiz-player-main {
        padding: var(--spacing-md);
        padding-bottom: 88px;
    }

    .quiz-card {
        padding: var(--spacing-lg);
    }

    .quiz-action-bar {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media print {
    .quiz-player-header,
    .quiz-action-bar {
        position: static;
        box-shadow: none;
    }
}

[data-theme="dark"] .quiz-player-header,
[data-theme="dark"] .quiz-action-bar {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .quiz-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .quiz-option {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .quiz-option:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .quiz-option-selected,
[data-theme="dark"] .quiz-option:has(.quiz-option-radio:checked) {
    background: var(--color-primary-muted);
    border-color: var(--color-primary);
}

[data-theme="dark"] .quiz-previous-attempts {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .quiz-previous-summary {
    color: var(--text-primary);
}

/* ============================================
   Admin Email Logs (delivery monitor)
   ============================================ */
.kpi-chip-wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.kpi-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
}

.kpi-chip strong {
    color: var(--text-primary);
    font-weight: 600;
}

.kpi-chip-sent {
    background: rgba(34, 197, 94, 0.12);
    border-color: rgba(34, 197, 94, 0.3);
    color: var(--color-success);
}

.kpi-chip-sent strong {
    color: var(--color-success);
}

.kpi-chip-failed {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.25);
    color: var(--color-error);
}

.kpi-chip-failed strong {
    color: var(--color-error);
}

.email-status-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: var(--font-weight-medium);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.email-status-sent {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.email-status-failed {
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-error);
}

.truncate-1 {
    display: block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

table.ui-table.ui-table-email-logs tbody tr.email-log-row {
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

table.ui-table.ui-table-email-logs tbody tr.email-log-row:hover {
    background: var(--color-gray-50);
}

table.ui-table.ui-table-email-logs tbody tr.email-log-row:focus {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--color-primary);
}

.email-log-drawer .log-details-drawer-body .log-details-meta {
    grid-template-columns: auto 1fr;
}

.email-log-drawer-section {
    margin-top: var(--spacing-lg);
}

.email-log-drawer-section .btn {
    margin-top: var(--spacing-xs);
}

.email-log-details-trigger:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary);
}

/* Compact empty state (email logs) */
.empty-state-compact {
    padding: var(--spacing-xl) var(--spacing-lg);
}

.empty-state-compact .empty-state-icon {
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
}

.empty-state-compact .empty-state-title {
    font-size: var(--font-size-base);
}

.empty-state-compact .empty-state-subtitle {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .kpi-chip {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .kpi-chip strong {
    color: var(--text-primary);
}

[data-theme="dark"] .kpi-chip-sent {
    background: rgba(34, 197, 94, 0.2);
    border-color: rgba(34, 197, 94, 0.4);
}

[data-theme="dark"] .kpi-chip-failed {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
}

[data-theme="dark"] table.ui-table.ui-table-email-logs tbody tr.email-log-row:hover {
    background: var(--bg-tertiary);
}

/* ============================================
   Account Settings (Profile Edit)
   ============================================ */
.settings-page {
    padding-bottom: var(--spacing-2xl);
}

.settings-page .page-header {
    margin-bottom: var(--spacing-lg);
}

.settings-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.settings-card {
    position: sticky;
    top: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.settings-summary {
    padding: var(--spacing-xl);
    text-align: center;
}

.settings-avatar-wrap {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.avatar-xl {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    object-fit: cover;
    display: block;
}

.avatar-xl.avatar-img {
    background: var(--color-gray-100);
}

.avatar-xl.avatar-fallback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    background: var(--color-primary-muted, rgba(99, 102, 241, 0.15));
    color: var(--color-primary);
}

.settings-avatar-wrap .avatar-img.no-src,
.settings-avatar-wrap .avatar-img[src=""] {
    display: none;
}

.settings-avatar-wrap .avatar-img:not([src=""]):not(.no-src) ~ .avatar-fallback {
    display: none;
}

.settings-summary-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.settings-summary-email {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-sm) 0;
}

.role-badge {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    text-transform: capitalize;
}

.role-badge-student {
    background: rgba(99, 102, 241, 0.12);
    color: var(--color-primary);
}

.role-badge-instructor {
    background: rgba(34, 197, 94, 0.12);
    color: var(--color-success);
}

.role-badge-super_admin {
    background: var(--color-gray-100);
    color: var(--text-secondary);
}

.settings-email-note {
    margin-top: var(--spacing-md);
    margin-bottom: 0;
    font-size: var(--font-size-xs);
    text-align: center;
}

.settings-form-card {
    min-width: 0;
}

.settings-form-card .form-row {
    margin-bottom: var(--spacing-lg);
}

.settings-form-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-100);
}

.input-with-badge {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.input-with-badge .form-input {
    flex: 1;
    min-width: 0;
}

.input-readonly {
    background: var(--color-gray-50) !important;
    color: var(--text-secondary);
    cursor: not-allowed;
}

.input-readonly-badge {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.input-url {
    max-width: 100%;
    overflow-x: auto;
    min-height: 2.5rem;
}

.form-hint-inline {
    margin-top: var(--spacing-xs);
}

@media (max-width: 1024px) {
    .settings-layout {
        grid-template-columns: 1fr;
    }

    .settings-card {
        position: static;
    }

    .settings-summary {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: var(--spacing-md);
        text-align: left;
    }

    .settings-avatar-wrap {
        margin-bottom: 0;
    }

    .settings-email-note {
        width: 100%;
        margin-top: var(--spacing-sm);
        text-align: left;
    }
}

[data-theme="dark"] .settings-card,
[data-theme="dark"] .settings-form-card .table-card {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .input-readonly {
    background: var(--bg-tertiary) !important;
    color: var(--text-secondary);
}

[data-theme="dark"] .input-readonly-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-theme="dark"] .role-badge-student {
    background: rgba(99, 102, 241, 0.2);
}

[data-theme="dark"] .role-badge-instructor {
    background: rgba(34, 197, 94, 0.2);
}

[data-theme="dark"] .role-badge-super_admin {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* ============================================
   Toast Notifications
   ============================================ */
#toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
    pointer-events: none;
}

#toast-container > * {
    pointer-events: auto;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    font-size: var(--font-size-sm);
    animation: toast-in 0.25s ease-out;
}

.toast-dismissing {
    animation: toast-out 0.2s ease-in forwards;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toast-out {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100%); }
}

.toast-success {
    background: var(--color-success-bg);
    color: #065f46;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.toast-success i:first-child {
    color: var(--color-success);
}

.toast-error {
    background: var(--color-error-bg);
    color: #991b1b;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.toast-error i:first-child {
    color: var(--color-error);
}

.toast-info {
    background: var(--color-info-bg);
    color: #1e40af;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.toast-info i:first-child {
    color: var(--color-info);
}

.toast-message {
    flex: 1;
}

.toast-close {
    background: none;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
}

.toast-close:hover {
    opacity: 1;
}

[data-theme="dark"] .toast-success {
    background: rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

[data-theme="dark"] .toast-error {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

[data-theme="dark"] .toast-info {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

@media (max-width: 480px) {
    #toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        max-width: none;
    }
}

/* Error page */
.error-page {
    min-height: calc(100vh - var(--header-height, 64px) - 120px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.error-page-card {
    max-width: 560px;
    text-align: center;
    padding: var(--spacing-3xl);
}

.error-page-code {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--color-error);
    margin-bottom: var(--spacing-lg);
}

.error-page-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

.error-page-message {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    line-height: 1.6;
}

.error-page-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

[data-theme="dark"] .error-page-code {
    color: var(--color-error);
}

[data-theme="dark"] .error-page-title {
    color: var(--text-primary);
}

[data-theme="dark"] .error-page-message {
    color: var(--text-secondary);
}

/* 404-specific: 2-column layout aligned with LMS design system (landing pattern) */
.error-404-page {
    padding: 0;
    margin: 0;
    max-width: none;
}

.error-404-layout,
.error-404-hero {
    margin-bottom: 0;
}

/* Remove padding from role layouts when 404 - no top/bottom gaps */
.student-content:has(.error-404-page),
.instructor-content:has(.error-404-page),
.admin-content:has(.error-404-page) {
    padding: 0 !important;
}

.error-page-404 {
    min-height: auto;
    padding: 0;
    flex-direction: column;
    align-items: stretch;
}

.error-404-layout {
    min-height: auto;
}

/* Hero - full gradient, 2-column content, compact - no extra gaps */
.error-404-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.error-404-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

/* 2-column grid - matches landing-content, centered */
.error-404-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    max-width: var(--container-max-width);
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* Left column: message + countdown + actions - centered */
.error-404-left {
    color: white;
    text-align: center;
}

.error-404-hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
}

.error-404-hero-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0 0 var(--spacing-md) 0;
}

.error-404-code {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: white;
    letter-spacing: -0.02em;
    line-height: 1;
}

.error-404-title-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: rgba(255, 255, 255, 0.95);
    line-height: var(--line-height-tight);
}

.error-404-hero-subtitle {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.85);
    margin: 0 auto var(--spacing-xl) auto;
    max-width: 420px;
    line-height: var(--line-height-relaxed);
}

/* Right column: shortcuts card */
.error-404-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.error-404-shortcuts-card {
    max-width: 400px;
    width: 100%;
    padding: var(--spacing-xl);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-xl);
}

.error-404-shortcuts-card.card:hover {
    transform: none;
}

.error-404-shortcuts-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0 0 var(--spacing-lg) 0;
}

.error-404-shortcuts-title i {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.error-404-shortcuts-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.error-404-shortcut {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--color-gray-50);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    border: 1px solid var(--color-gray-200);
}

.error-404-shortcut:hover {
    background: white;
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.error-404-shortcut i {
    font-size: 1.25rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.error-404-shortcut-primary {
    background: var(--color-primary-bg);
    border-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.error-404-shortcut-primary:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.error-404-shortcut-primary:hover i {
    color: white;
}

.error-404-countdown {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: 0 auto var(--spacing-xl) auto;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    backdrop-filter: blur(8px);
}

.error-404-countdown i {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

.error-404-countdown-text {
    color: rgba(255, 255, 255, 0.9);
}

.error-404-countdown-timer {
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    color: white;
}

.error-404-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.error-404-actions .btn-primary {
    background: white;
    color: var(--color-primary);
    border: none;
}

.error-404-actions .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-primary-dark);
}

.error-404-actions .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.error-404-actions .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

/* Dark mode */
[data-theme="dark"] .error-404-shortcut {
    background: var(--color-gray-800);
    border-color: var(--color-gray-700);
}

[data-theme="dark"] .error-404-shortcut:hover {
    background: var(--color-gray-700);
    border-color: var(--color-primary);
}

[data-theme="dark"] .error-404-shortcut-primary {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.4);
}

[data-theme="dark"] .error-404-shortcut-primary:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

[data-theme="dark"] .error-404-countdown {
    background: rgba(255, 255, 255, 0.12);
}

/* 404 responsive - stack to single column on mobile */
@media (max-width: 968px) {
    .error-404-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .error-404-shortcuts-card {
        max-width: none;
    }
}

@media (max-width: 768px) {
    .error-404-hero {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    .error-404-code {
        font-size: var(--font-size-4xl);
    }

    .error-404-title-text {
        font-size: var(--font-size-lg);
    }

    .error-404-hero-subtitle {
        font-size: var(--font-size-sm);
    }

    .error-404-left {
        text-align: center;
    }

    .error-404-countdown {
        justify-content: center;
    }

    .error-404-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .error-404-hero {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .error-404-code {
        font-size: var(--font-size-3xl);
    }

    .error-404-shortcuts-card {
        padding: var(--spacing-lg);
    }
}

/* Profile edit */
.profile-edit-main {
    padding: var(--spacing-xl) var(--spacing-lg);
}

.profile-edit-container {
    max-width: 800px;
    margin: 0 auto;
}

.profile-edit-card {
    padding: var(--spacing-xl);
}

.profile-edit-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
}

.profile-edit-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.form-hint {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

.profile-edit-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Ticket detail (support) */
.ticket-detail-back {
    margin-bottom: var(--spacing-xl);
}

.ticket-detail-back a {
    color: var(--color-primary);
    text-decoration: none;
}

.ticket-detail-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.ticket-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.ticket-detail-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.ticket-detail-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.ticket-detail-status {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.ticket-detail-status.resolved {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.ticket-detail-status.closed {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.ticket-detail-status.open,
.ticket-detail-status.in_progress,
.ticket-detail-status.pending {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.ticket-detail-priority {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.ticket-detail-date {
    text-align: right;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.ticket-detail-section {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-xl);
}

.ticket-detail-section-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.ticket-detail-message {
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
}

.ticket-detail-assigned {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.ticket-detail-assigned p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

[data-theme="dark"] .ticket-detail-card {
    background: var(--color-surface);
}

/* Instructor Revenue page */
.instructor-revenue-page .instructor-revenue-header {
    margin-bottom: var(--spacing-xl);
}

.instructor-revenue-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.instructor-revenue-subtitle {
    color: var(--text-secondary);
}

.instructor-revenue-filters {
    margin-bottom: var(--spacing-xl);
}

.instructor-revenue-filter-form {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    flex-wrap: wrap;
}

.instructor-revenue-filter-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    flex-wrap: wrap;
}

.instructor-revenue-field {
    flex: 1;
    min-width: 140px;
}

.instructor-revenue-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

.instructor-revenue-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.instructor-revenue-total {
    text-align: center;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.instructor-revenue-total-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.instructor-revenue-total-value {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-success);
}

.instructor-revenue-table-card {
    padding: var(--spacing-xl);
}

.instructor-revenue-table-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
}

.instructor-revenue-empty {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-xl);
}

.instructor-revenue-course-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
}

.instructor-revenue-course-link:hover {
    text-decoration: underline;
}

.instructor-revenue-amount {
    font-weight: var(--font-weight-semibold);
    color: var(--color-success);
}

/* Course Analytics page */
.course-analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.course-analytics-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.course-analytics-subtitle {
    color: var(--text-secondary);
}

.course-analytics-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.course-analytics-kpi-card {
    padding: var(--spacing-xl);
}

.course-analytics-kpi-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.course-analytics-kpi-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.course-analytics-kpi-success {
    color: var(--color-success);
}

.course-analytics-kpi-primary {
    color: var(--color-primary);
}

.course-analytics-kpi-meta {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.course-analytics-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.course-analytics-detail-card {
    padding: var(--spacing-xl);
}

.course-analytics-detail-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-xl);
}

.course-analytics-detail-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.course-analytics-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-analytics-detail-label {
    color: var(--text-secondary);
}

.course-analytics-detail-value {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.course-analytics-detail-success {
    color: var(--color-success);
}

/* Live session edit - full content area width */
.live-session-edit-container {
    width: 100%;
    max-width: 100%;
    padding: var(--spacing-xl) var(--spacing-lg);
    margin: 0;
}

.live-session-edit-container .live-session-edit-back {
    margin-bottom: var(--spacing-xl);
}

.live-session-edit-container .live-session-edit-back a {
    color: var(--color-primary);
    text-decoration: none;
}

.live-session-edit-container .live-session-edit-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.live-session-edit-container .live-session-edit-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
}

/* Calendar nav (minimal - for calendar/show.ejs) */
.calendar-nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.calendar-nav-month {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

/* ============================================
   Payment success page
   ============================================ */
.payment-success-page .container {
    margin: 0 auto;
}

.payment-success-demo-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    background: rgba(245, 158, 11, 0.12);
    color: #b45309;
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.payment-success-demo-badge i {
    font-size: 1rem;
    opacity: 0.9;
}

.payment-success-card {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-2xl);
    border-top: 4px solid var(--color-success);
}

.payment-success-icon-wrap {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    background: var(--color-success-bg);
    color: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.payment-success-icon-wrap i {
    font-size: 2.75rem;
}

.payment-success-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-success);
    margin-bottom: var(--spacing-sm);
}

.payment-success-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.payment-success-desc {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    max-width: 28rem;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.55;
}

.payment-success-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.payment-success-actions .btn {
    min-width: 140px;
}

.payment-success-actions .btn-primary:hover:not(:disabled),
.payment-success-actions .btn-secondary:hover:not(:disabled) {
    transform: none;
    box-shadow: var(--shadow-md);
}

.payment-success-actions .btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary);
}

.payment-success-actions .btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-600);
}

/* ============================================
   Live session page wrappers
   ============================================ */

.live-session-page-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
    box-sizing: border-box;
}

.live-session-page-wrap--narrow {
    max-width: 800px;
}

.live-session-page-wrap--detail {
    max-width: 1000px;
}

.live-session-page-wrap--full {
    max-width: 100%;
    padding: 0;
}

@media (max-width: 640px) {
    .live-session-page-wrap {
        padding: 0 var(--spacing-md);
    }
}

/* ============================================
   Table horizontal scroll (mobile)
   ============================================ */

.table-scroll-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-scroll-hint {
    display: none;
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

@media (max-width: 768px) {
    .table-scroll-hint {
        display: block;
    }
}