/* ============================================
   BAYAN Platform - Main Stylesheet
   Neurotechnology Terminology Platform
   ============================================ */

/* ---------- CSS Variables (Theming) ---------- */
:root {
    --primary: #0D4C92;
    --primary-light: #1a6bc4;
    --primary-dark: #093a6f;
    --secondary: #59C1BD;
    --secondary-light: #7dd4d0;
    --secondary-dark: #3da8a4;
    --accent: #F0A500;
    --accent-light: #f5bc3d;

    /* Light mode (default) */
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8edf2;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #7a7a9a;
    --border-color: #d0d5dd;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --card-bg: #ffffff;
    --header-bg: #ffffff;
    --footer-bg: #0a3d75;
    --input-bg: #ffffff;
    --hover-bg: rgba(13, 76, 146, 0.06);
    --overlay: rgba(0, 0, 0, 0.5);

    /* Typography */
    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-ar: 'Noto Sans Arabic', 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ---------- Dark Mode ---------- */
html.dark {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #e8e8e8;
    --text-secondary: #b0b0cc;
    --text-muted: #7878a0;
    --border-color: #2a2a4a;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --card-bg: #16213e;
    --header-bg: #16213e;
    --footer-bg: #0f1a30;
    --input-bg: #1a1a2e;
    --hover-bg: rgba(89, 193, 189, 0.1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-en);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-base), color var(--transition-base);
}

html[dir="rtl"] body {
    font-family: var(--font-ar);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary);
}

html.dark a {
    color: var(--secondary);
}

html.dark a:hover {
    color: var(--secondary-light);
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ---------- Header ---------- */
.site-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-base);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-image {
    height: 50px;
    width: auto;
}

.logo-content {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

html.dark .logo-text {
    color: var(--secondary);
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

/* Navigation */
.main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.main-nav a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
    background: var(--hover-bg);
    color: var(--primary);
}

html.dark .main-nav a:hover,
html.dark .main-nav a.active {
    color: var(--secondary);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
    text-decoration: none;
}

.btn-icon:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.lang-toggle span {
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.mobile-menu-toggle {
    display: none;
}

/* ---------- Main Content ---------- */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* ---------- Hero Section ---------- */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    margin: calc(-1 * var(--spacing-xl)) 0 var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.hero p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.hero-search {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.hero-search input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    padding-right: 60px;
    font-size: var(--font-size-lg);
    border: none;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.95);
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    outline: none;
    font-family: inherit;
}

html[dir="rtl"] .hero-search input {
    padding-right: var(--spacing-xl);
    padding-left: 60px;
    font-family: var(--font-ar);
}

.hero-search button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-lg);
    background: var(--primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

html[dir="rtl"] .hero-search button {
    right: auto;
    left: 8px;
}

.hero-search button:hover {
    background: var(--primary-dark);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
    position: relative;
}

.hero-stat {
    text-align: center;
}

.hero-stat .stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    display: block;
}

.hero-stat .stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

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

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

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
}

.section-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ---------- Cards ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--secondary);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.badge-primary {
    background: rgba(13, 76, 146, 0.1);
    color: var(--primary);
}

html.dark .badge-primary {
    background: rgba(89, 193, 189, 0.15);
    color: var(--secondary);
}

/* ---------- Term Card ---------- */
.term-card {
    display: block;
    text-decoration: none;
    color: inherit;
}

.term-card .term-english {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

html.dark .term-card .term-english {
    color: var(--secondary);
}

.term-card .term-arabic {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-ar);
    direction: rtl;
    margin-bottom: var(--spacing-sm);
}

.term-card .term-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- Category Cards ---------- */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.category-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-base);
}

.category-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.category-card .cat-name-en {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

html.dark .category-card .cat-name-en {
    color: var(--secondary);
}

.category-card .cat-name-ar {
    font-family: var(--font-ar);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.category-card .cat-count {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ---------- Search & Filters ---------- */
.search-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.search-form {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.search-input-wrapper {
    flex: 1;
    position: relative;
}

.search-input-wrapper i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

html[dir="rtl"] .search-input-wrapper i {
    left: auto;
    right: var(--spacing-md);
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) * 2.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

html[dir="rtl"] .search-input {
    padding: var(--spacing-md) calc(var(--spacing-md) * 2.5) var(--spacing-md) var(--spacing-md);
    font-family: var(--font-ar);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 76, 146, 0.1);
}

html.dark .search-input:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(89, 193, 189, 0.15);
}

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

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    cursor: pointer;
}

html[dir="rtl"] .filter-select {
    font-family: var(--font-ar);
}

/* ---------- Letter Filter ---------- */
.letter-filter {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.letter-filter a,
.letter-filter span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.letter-filter a:hover,
.letter-filter a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

html.dark .letter-filter a:hover,
html.dark .letter-filter a.active {
    background: var(--secondary);
    border-color: var(--secondary);
    color: var(--text-primary);
}

/* ---------- Term Detail Page ---------- */
.term-detail {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.term-detail-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: var(--spacing-2xl);
}

.term-detail-header h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.term-detail-header .arabic-title {
    font-size: var(--font-size-2xl);
    font-family: var(--font-ar);
    direction: rtl;
    opacity: 0.9;
}

.term-detail-body {
    padding: var(--spacing-2xl);
}

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

.term-section h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

html.dark .term-section h2 {
    color: var(--secondary);
}

.term-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.term-desc-ar {
    font-family: var(--font-ar);
    direction: rtl;
    text-align: right;
}

.term-examples,
.term-publications {
    padding: 0;
}

.term-examples li,
.term-publications li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.term-examples li:last-child,
.term-publications li:last-child {
    border-bottom: none;
}

.term-examples li::before {
    content: '\f0da';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--secondary);
    flex-shrink: 0;
    margin-top: 2px;
}

html[dir="rtl"] .term-examples li::before {
    content: '\f0d9';
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: inherit;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
}

.btn-secondary {
    background: var(--secondary);
    color: #fff;
    border-color: var(--secondary);
}

.btn-secondary:hover {
    background: var(--secondary-dark);
    color: #fff;
}

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

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
    border-color: #e74c3c;
}

.btn-danger:hover {
    background: #c0392b;
}

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

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

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 76, 146, 0.1);
}

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

/* ---------- Tables ---------- */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

html[dir="rtl"] .data-table th,
html[dir="rtl"] .data-table td {
    text-align: right;
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

.data-table tr:hover {
    background: var(--hover-bg);
}

.data-table tr:last-child td {
    border-bottom: none;
}

.table-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.pagination ul {
    display: flex;
    gap: var(--spacing-xs);
}

.pagination-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination-link:hover,
.pagination-link.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

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

.pagination-ellipsis {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-muted);
}

/* ---------- Alerts ---------- */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background: rgba(46, 204, 113, 0.1);
    color: #27ae60;
    border: 1px solid rgba(46, 204, 113, 0.2);
}

.alert-error {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.alert-warning {
    background: rgba(241, 196, 15, 0.1);
    color: #f39c12;
    border: 1px solid rgba(241, 196, 15, 0.2);
}

.alert-info {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
    border: 1px solid rgba(52, 152, 219, 0.2);
}

/* ---------- Login Page ---------- */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-md);
}

.login-card h1 {
    font-size: var(--font-size-2xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--primary);
}

html.dark .login-card h1 {
    color: var(--secondary);
}

/* ---------- Footer ---------- */
.site-footer {
    background: var(--footer-bg);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: auto;
}

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

.footer-brand h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    height: 60px;
    width: auto;
}

.footer-logo-wrapper {
    background: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.footer-initiative {
    color: var(--secondary);
    font-weight: 500;
}

.partner-logos {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.partner-logo {
    height: 50px;
    width: auto;
    transition: transform var(--transition-base), opacity var(--transition-base);
    opacity: 1;
    background: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.partner-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(255,255,255,0.2);
}

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

.footer-link:hover {
    color: var(--secondary);
    text-decoration: underline;
}

.footer-links h4,
.footer-org h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--secondary);
}

.footer-org p {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-xs);
    opacity: 0.6;
}

/* ---------- Export Page ---------- */
.export-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.export-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.export-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.export-card i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

html.dark .export-card i {
    color: var(--secondary);
}

.export-card h3 {
    margin-bottom: var(--spacing-sm);
}

.export-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

/* ---------- Modal ---------- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--overlay);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-sm);
}

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ---------- Admin Dashboard ---------- */
.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.stat-card .stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.stat-card .stat-icon.blue {
    background: rgba(13, 76, 146, 0.1);
    color: var(--primary);
}

.stat-card .stat-icon.green {
    background: rgba(46, 204, 113, 0.1);
    color: #27ae60;
}

.stat-card .stat-icon.orange {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
}

.stat-card .stat-icon.purple {
    background: rgba(155, 89, 182, 0.1);
    color: #9b59b6;
}

.stat-card .stat-info .stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: black;
}

.stat-card .stat-info .stat-label {
    font-size: var(--font-size-sm);
    color: #093a6f;
}

/* ---------- Search Results ---------- */
.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.results-count {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-secondary);
}

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

.breadcrumb .separator {
    color: var(--text-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 60px;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--header-bg);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        z-index: 999;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        padding: var(--spacing-md);
    }

    .main-nav a {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .hero h1 {
        font-size: var(--font-size-2xl);
    }

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

    .hero-stat .stat-number {
        font-size: var(--font-size-2xl);
    }

    .search-form {
        flex-direction: column;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .term-detail-header {
        padding: var(--spacing-lg);
    }

    .term-detail-header h1 {
        font-size: var(--font-size-2xl);
    }

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

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

    .export-options {
        grid-template-columns: 1fr;
    }

    .results-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }

    .section-header {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
}

/* ---------- Back to Top Button ---------- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(13, 76, 146, 0.3);
}

.back-to-top.show {
    display: flex;
}

html.dark .back-to-top {
    background: var(--secondary);
}

html.dark .back-to-top:hover {
    background: var(--secondary-dark);
    box-shadow: 0 8px 20px rgba(89, 193, 189, 0.3);
}

html[dir="rtl"] .back-to-top {
    right: auto;
    left: 2rem;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
    
    html[dir="rtl"] .back-to-top {
        right: auto;
        left: 1rem;
    }
}

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

    .category-grid {
        grid-template-columns: 1fr;
    }

    .admin-grid {
        grid-template-columns: 1fr;
    }

    .letter-filter a,
    .letter-filter span {
        width: 30px;
        height: 30px;
        font-size: var(--font-size-xs);
    }
}

/* ---------- Utility Classes ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.d-flex { display: flex; }
.gap-1 { gap: var(--spacing-md); }
.gap-2 { gap: var(--spacing-xl); }
.flex-wrap { flex-wrap: wrap; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.w-100 { width: 100%; }
.hidden { display: none !important; }