/* ПОЛНАЯ ВЕРСИЯ
    Файл стилей (CSS)
    (Синяя "Современная" тема)
    
    ИЗМЕНЕНО: Добавлена поддержка темной темы (День/Ночь)
*/

/* ---------------- */
/* Переменные (Светлая тема) */
/* ---------------- */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;

    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    /* Главные переменные темы */
    --bg-color: #f8fafc;
    /* Фон страницы */
    --sidebar-bg: #1e293b;
    /* Сайдбар */
    --card-bg: #ffffff;
    /* Карточки */
    --text-primary: #0f172a;
    /* Основной текст */
    --text-secondary: #64748b;
    /* Второстепенный текст */
    --border-color: #e2e8f0;
    /* Рамки */

    /* Тени */
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* ---------------- */
/* Переменные (Темная тема) */
/* ---------------- */
[data-theme="dark"] {
    --primary-color: #3b82f6;
    /* Синий чуть светлее */
    --primary-dark: #60a5fa;
    --primary-light: #1e293b;
    /* Очень темный */

    /* Главные переменные темы */
    --bg-color: #0f172a;
    /* Темно-синий фон */
    --sidebar-bg: #1e293b;
    /* Фон сайдбара (тот же) */
    --card-bg: #1e293b;
    /* Карточки (темные) */
    --text-primary: #f8fafc;
    /* Белый текст */
    --text-secondary: #94a3b8;
    /* Светло-серый текст */
    --border-color: #334155;
    /* Темные рамки */

    /* Тени (почти невидимы на темном) */
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
}

/* ---------------- */
/* Общие стили */
/* ---------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* ---------------- */
/* Переключатель темы */
/* ---------------- */
.theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s;
    margin-right: 1rem;
}

.theme-toggle:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: block;
}

/* Когда тема темная, показываем солнце */
[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

/* Отдельный стиль для страницы логина */
.theme-toggle-absolute {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 10;
}

/* ---------------- */
/* Landing Page (Главная) */
/* ---------------- */
.landing-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.landing-header {
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 1.5rem 0;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
}

.landing-header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.landing-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-toggle-group {
    display: inline-flex;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2px;
}

.lang-btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
    border: none;
    background: transparent;
    border-radius: 4px;
    transition: all 0.2s;
}

.lang-btn:hover {
    color: var(--primary-color);
}

.lang-btn.lang-btn-active {
    background: var(--primary-color);
    color: white;
}

.logo h1 {
    color: var(--primary-color);
}

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

.hero {
    /* Градиент в темной теме не смотрится, делаем проще */
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

[data-theme="dark"] .hero {
    background: var(--card-bg);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .hero p {
    color: var(--text-secondary);
}

/* Секции (Возможности, Отделения, Новости) */
.features,
.departments,
.news-section {
    padding: 4rem 2rem;
}

.features {
    background: var(--card-bg);
}

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

.news-section {
    background: var(--card-bg);
}

.feature-grid,
.department-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card,
.department-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

.feature-card:hover,
.department-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon,
.department-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.feature-card h4,
.department-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.department-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.feature-card ul {
    list-style: none;
}

.feature-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.feature-card li:before {
    content: "\f00c";
    /* Галочка Font Awesome */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--success-color);
}


/* Стили для Новостей (Landing) */
.news-section h3,
.features h3,
.departments h3 {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 3rem;
    font-weight: 700;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.news-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.news-card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.news-card-content {
    padding: 1.5rem;
}

.news-card-date {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.news-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.news-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Футер лендинга */
.landing-footer {
    background: var(--sidebar-bg);
    /* Используем --sidebar-bg для консистентности */
    color: #e2e8f0;
    /* Явный светлый цвет для темного фона */
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ---------------- */
/* Login Page */
/* ---------------- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    padding: 2rem;
}

.login-container {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 450px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.login-header {
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    color: var(--primary-color);
    padding: 2rem;
    text-align: center;
}

.login-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.login-header p {
    color: var(--text-secondary);
}

.login-form-wrapper {
    padding: 2.5rem;
}

.login-form-wrapper h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
    font-weight: 600;
}

.demo-credentials {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.demo-credentials h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.demo-card {
    background: var(--bg-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

.demo-card strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--primary-color);
    font-weight: 600;
}

.demo-card p {
    margin: 0;
    color: var(--text-secondary);
}

.login-footer {
    padding: 1.5rem 2rem;
    background: var(--bg-color);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}


/* ---------------- */
/* Dashboard Layout */
/* ---------------- */
.dashboard {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    /* Стили текста и фона для сайдбара 
       независимо от темы (он всегда темный) */
    color: white;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sidebar-header h2 {
    font-size: 1.5rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.role-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
}

.role-badge.admin {
    background: var(--danger-color);
    color: white;
}

.role-badge.teacher {
    background: var(--primary-color);
    color: white;
}

.role-badge.student {
    background: var(--success-color);
    color: white;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    margin: 0.25rem 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    /* Светлый текст */
    text-decoration: none;
    transition: all 0.3s;
    border-radius: 8px;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    /* Легкое выделение */
    color: white;
}

.nav-item.active {
    background: var(--primary-color);
    /* Акцентный цвет (синий) */
    color: white;
}

.nav-item .icon {
    margin-right: 1rem;
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Стили для темной темы (корректировка рамок сайдбара) */
[data-theme="dark"] .sidebar {
    border-right: 1px solid var(--border-color);
}

[data-theme="dark"] .sidebar .sidebar-header {
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .sidebar .sidebar-footer {
    border-top: 1px solid var(--border-color);
}

/* ... */

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem 2.5rem;
    overflow-x: hidden;
    /* Prevent horizontal overflow beyond main content */
    min-width: 0;
    /* Allow flex item to shrink below its minimum content size */
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.content-header h1 {
    font-size: 2rem;
    font-weight: 600;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    /* Увеличено для кнопки темы */
}

.user-info {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Уведомления */
.notifications {
    position: relative;
}

.notifications .icon {
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s;
}

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

.notification-count {
    position: absolute;
    top: -5px;
    right: -8px;
    background: linear-gradient(135deg, #ff6b6b, #ff5252);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.4);
    border: 2px solid var(--card-bg);
}

.notifications-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.75rem;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    width: 380px;
    z-index: 1000;
    overflow: hidden;
    animation: slideInLeft 0.3s ease-out;
    border: 1px solid var(--border-color);
    max-height: 600px;
    display: none;
    flex-direction: column;
}

.notifications-dropdown.active {
    display: flex;
}

.notifications-dropdown::-webkit-scrollbar {
    width: 6px;
}

.notifications-dropdown::-webkit-scrollbar-track {
    background: transparent;
}

.notifications-dropdown::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.notifications-dropdown::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.notification-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    /* ! */
    font-size: 0.9rem;
}

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

.notification-item .time {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.notification-item .badge-graded,
.notification-item .badge-pending,
.notification-item .badge-submitted,
.notification-item .badge-test {
    display: inline-block;
    margin-right: 0.5rem;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-graded {
    background: #d1fae5;
    color: #065f46;
}

.badge-pending {
    background: #fef3c7;
    color: #92400e;
}

.badge-submitted {
    background: #dbeafe;
    color: #1e40af;
}

.badge-test {
    background: #e9d5ff;
    color: #6b21a8;
}

/* Dark theme badges */
[data-theme="dark"] .badge-graded {
    background: rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

[data-theme="dark"] .badge-pending {
    background: rgba(245, 158, 11, 0.2);
    color: #fcd34d;
}

[data-theme="dark"] .badge-submitted {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

[data-theme="dark"] .badge-test {
    background: rgba(168, 85, 247, 0.2);
    color: #d8b4fe;
}


/* Sections */
.content-section {
    display: none;
}

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

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    font-weight: 600;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    overflow-x: hidden;
    /* Prevent card content from overflowing horizontally */
}

.card.p-0 {
    padding: 0;
}

.card h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Stats Grid (на Главной) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.stat-icon {
    font-size: 2.5rem;
    margin-right: 1.5rem;
}

.stat-info h3 {
    font-size: 2.25rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-weight: 700;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* НОВОЕ: Стили новостей на Dashboard */
.news-grid-dashboard {
    display: grid;
    grid-template-columns: 1fr;
    /* Одна колонка */
    gap: 1rem;
}

.news-card-dashboard {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s;
}

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

.news-card-dashboard-icon {
    font-size: 2rem;
    color: var(--primary-color);
    width: 50px;
    text-align: center;
}

.news-card-dashboard-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.news-card-dashboard-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.news-card-dashboard-content .news-card-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    display: block;
}


/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    /* ! */
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
    background-color: var(--card-bg);
    /* ! */
    color: var(--text-primary);
    /* ! */
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
    /* ! */
}

/* Специальная тень для темной темы */
[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.form-group input[disabled] {
    background-color: var(--bg-color);
    color: var(--text-secondary);
}

.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    letter-spacing: 0.5px;
}

.btn .icon {
    margin-right: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--bg-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: #f1f5f9;
}

[data-theme="dark"] .btn-secondary:hover {
    background: #334155;
    /* Темный ховер */
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-info {
    background: #0ea5e9;
    color: white;
}

.btn-info:hover {
    background: #0284c7;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-block {
    width: 100%;
    display: block;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-hero {
    background: white;
    color: var(--primary-dark);
    font-weight: 700;
}

[data-theme="dark"] .btn-hero {
    background: var(--primary-color);
    color: white;
}

.btn-hero:hover {
    background: #f1f5f9;
    color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .btn-hero:hover {
    background: var(--primary-dark);
    color: white;
}


/* Tables */
.table-responsive {
    overflow-x: auto;
}

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

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    /* ! */
    vertical-align: middle;
}

.data-table th {
    background: var(--bg-color);
    /* ! */
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.data-table tr:hover {
    background: var(--bg-color);
    /* ! */
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    /* ! */
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s;
    margin-bottom: -2px;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Subjects Grid */
.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.subject-card {
    background: var(--card-bg);
    /* ! */
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
    /* ! */
}

.subject-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.subject-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.subject-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

/* Assignments List */
.assignments-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.assignment-card {
    background: var(--card-bg);
    /* ! */
    border: 1px solid var(--border-color);
    /* ! */
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s;
}

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

.assignment-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
    gap: 1rem;
}

.assignment-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.assignment-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.assignment-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.assignment-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.assignment-actions {
    display: flex;
    gap: 0.75rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
    overflow-y: auto;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--card-bg);
    /* ! */
    margin: 5% auto;
    padding: 20px;
    width: 90%;
    max-width: 600px;
    /* ! */
    border: 1px solid var(--border-color);
    /* ! */
    border-radius: 8px;
}

.filter-bar .form-group {
    margin-bottom: 0;
    flex: 1;
}

/* Schedule Grid */
.schedule-grid {
    display: grid;
    gap: 1rem;
}

.schedule-day {
    background: var(--card-bg);
    /* ! */
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    /* ! */
}

.schedule-day h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 600;
}

.schedule-item {
    padding: 1rem;
    background: var(--bg-color);
    /* ! */
    border-radius: 6px;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
    /* ! */
}

.schedule-time {
    font-weight: 600;
    color: var(--text-primary);
}

.schedule-subject {
    color: var(--primary-color);
    font-weight: 500;
}

.schedule-teacher {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
    background: var(--bg-color);
    /* ! */
    border-radius: 8px;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Стили: Сообщения */
.messages-layout {
    display: flex;
    height: 70vh;
    border: 1px solid var(--border-color);
    /* ! */
    border-radius: 12px;
    overflow: hidden;
}

.messages-sidebar {
    width: 35%;
    max-width: 300px;
    border-right: 1px solid var(--border-color);
    /* ! */
    overflow-y: auto;
    background: var(--bg-color);
    /* ! */
}

.message-contact {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    /* ! */
    cursor: pointer;
    position: relative;
    transition: background 0.3s;
}

[data-theme="light"] .message-contact:hover {
    background: #eef2ff;
}

[data-theme="dark"] .message-contact:hover {
    background: #334155;
}

[data-theme="light"] .message-contact.active {
    background: white;
    border-left: 3px solid var(--primary-color);
}

[data-theme="dark"] .message-contact.active {
    background: var(--bg-color);
    border-left: 3px solid var(--primary-color);
}

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

.message-contact p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 0.25rem;
}

.message-time {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.messages-chat {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    /* ! */
}

.chat-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    /* ! */
    background: var(--bg-color);
    /* ! */
}

.chat-header h4 {
    margin: 0;
    font-weight: 600;
}

.chat-body {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.message {
    margin-bottom: 1rem;
    max-width: 80%;
    display: flex;
    flex-direction: column;
}

.message p {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    line-height: 1.5;
}

.message span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.message.received {
    align-items: flex-start;
}

.message.received p {
    background: var(--bg-color);
}

/* ! */
.message.received span {
    margin-left: 0.25rem;
}

.message.sent {
    align-items: flex-end;
}

.message.sent p {
    background: var(--primary-color);
    color: white;
}

.message.sent span {
    margin-right: 0.25rem;
}

.chat-input {
    display: flex;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    /* ! */
    background: var(--bg-color);
    /* ! */
}

.chat-input input {
    flex: 1;
    border-radius: 8px;
    margin-right: 0.5rem;
}

.chat-input .btn {
    flex-shrink: 0;
}


/* СТИЛИ: AI Помощник */
.ai-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    /* ! */
}

.ai-controls .form-group {
    flex: 1;
    min-width: 250px;
    margin-bottom: 0;
}

.ai-controls button {
    margin-bottom: 0;
    flex-shrink: 0;
}

.ai-chat-container {
    height: 60vh;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    /* ! */
    border-radius: 8px;
    overflow: hidden;
}

.ai-chat-box {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    background: #fdfdfd;
}

[data-theme="dark"] .ai-chat-box {
    background: var(--bg-color);
}

.ai-message {
    display: flex;
    margin-bottom: 1rem;
    max-width: 90%;
}

.ai-message p {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    line-height: 1.5;
    word-break: break-word;
}

.ai-message.user {
    justify-content: flex-end;
    margin-left: auto;
}

.ai-message.user p {
    background: var(--primary-color);
    color: white;
}

.ai-message.ai {
    justify-content: flex-start;
    margin-right: auto;
}

.ai-message.ai p {
    background: var(--bg-color);
    /* ! */
    border: 1px solid var(--border-color);
    /* ! */
}

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    gap: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-color);
    /* ! */
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--primary-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.ai-chat-input {
    display: flex;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    /* ! */
    background: var(--bg-color);
    /* ! */
}

.ai-chat-input input {
    flex: 1;
    border-radius: 8px;
    margin-right: 0.5rem;
}

.ai-chat-input .btn {
    flex-shrink: 0;
}


/* СТИЛИ: Секция "Контакты" */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.contact-card,
.resource-card {
    background: var(--bg-color);
    /* ! */
    border: 1px solid var(--border-color);
    /* ! */
    padding: 1.5rem;
    border-radius: 8px;
    transition: all 0.3s;
}

.contact-card:hover,
.resource-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.contact-card h4,
.resource-card h4 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.contact-card p,
.resource-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.resource-card {
    display: flex;
    flex-direction: column;
}

.resource-card p {
    flex-grow: 1;
    /* Кнопки будут внизу */
}


/* СТИЛИ: Исправление для графика (Chart.js) */
.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}


/* Прочие утилиты */
.mt-2 {
    margin-top: 2rem;
}

/* Стили: Программы и документы */
.programs-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.program-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.program-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.program-card-icon {
    font-size: 2rem;
    color: #ef4444;
    flex-shrink: 0;
}

.program-card-info h4 {
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.program-card-info small {
    color: var(--text-secondary);
}

/* Стили: Сессии */
.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.session-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s;
}

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

.session-card h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.session-card p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Стили: Тесты */
.tests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.test-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s;
}

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

.test-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.test-header h4 {
    color: var(--text-primary);
    margin: 0;
}

.test-card p {
    color: var(--text-secondary);
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

/* Табы для Главной (преподавателя и студента) */
.tabs-home {
    display: flex;
    gap: 1rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn-home {
    background: transparent;
    border: none;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
}

.tab-btn-home:hover {
    color: var(--text-primary);
}

.tab-btn-home.active {
    color: var(--primary-color);
}

.tab-btn-home.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.tab-home-content {
    display: none;
    animation: fadeIn 0.3s;
}

.tab-home-content.active {
    display: block;
}

/* Стили для заявок на тесты */
.requests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.request-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s;
}

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

.request-card h4 {
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
}

.request-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.request-status.pending {
    background: #fef3c7;
    color: #92400e;
}

.request-status.approved {
    background: #d1fae5;
    color: #065f46;
}

.request-status.rejected {
    background: #fee2e2;
    color: #7f1d1d;
}

.request-details {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 1rem 0;
}

.request-details p {
    margin: 0.25rem 0;
}

.request-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Литература сетка */
.literature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.literature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s;
}

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

.literature-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.literature-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--primary-color);
}

.literature-badge.дополнительная {
    background: #f0fdf4;
    color: #15803d;
}

.literature-card h4 {
    color: var(--text-primary);
    margin: 0.5rem 0;
}

.literature-card p {
    color: var(--text-secondary);
    margin: 0.25rem 0;
    font-size: 0.9rem;
}

.literature-card .author {
    font-weight: 500;
    color: var(--text-primary);
}

.literature-card .year {
    font-size: 0.8rem;
    color: var(--secondary-color);
}

/* ========================================
   МОДУЛЬ ОНЛАЙН-ТЕСТИРОВАНИЯ
   ======================================== */

/* Форма создания теста */
#teacher-create-test .form-control,
#teacher-create-test input[type="text"],
#teacher-create-test input[type="number"],
#teacher-create-test input[type="datetime-local"],
#test-questions-container input[type="text"],
#test-questions-container input[type="radio"] {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#teacher-create-test .form-control:focus,
#teacher-create-test input:focus,
#test-questions-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

[data-theme="dark"] #teacher-create-test .form-control:focus,
[data-theme="dark"] #teacher-create-test input:focus,
[data-theme="dark"] #test-questions-container input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Карточки вопросов */
#test-questions-container .card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-left: 4px solid #667eea;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    border-radius: 10px;
    position: relative;
}

#test-questions-container h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Строки ответов */
.answer-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 5px 0;
    padding: 10px;
    background: var(--bg-color);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.answer-row input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.answer-row input[type="text"] {
    flex: 1;
    margin: 0 !important;
}

/* Список созданных тестов */
#teacher-tests-list .card,
#student-tests-list .card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
}

#teacher-tests-list h4,
#student-tests-list h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

#teacher-tests-list p,
#student-tests-list p {
    color: var(--text-secondary);
    margin: 0.5rem 0;
}

/* Badge стили для студентов */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-secondary {
    background: #e2e8f0;
    color: #475569;
}

[data-theme="dark"] .badge-success {
    background: #065f46;
    color: #d1fae5;
}

[data-theme="dark"] .badge-warning {
    background: #92400e;
    color: #fef3c7;
}

[data-theme="dark"] .badge-secondary {
    background: #475569;
    color: #cbd5e1;
}

/* Labels */
#teacher-create-test label,
#test-questions-container label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

/* Row classes для сетки */
#teacher-create-test .row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.5rem;
}

#teacher-create-test .col-md-4,
#teacher-create-test .col-md-12 {
    padding: 0.5rem;
}

#teacher-create-test .col-md-4 {
    flex: 0 0 33.333%;
}

#teacher-create-test .col-md-12 {
    flex: 0 0 100%;
}

#teacher-create-test .mb-3 {
    margin-bottom: 1rem;
}

/* Form labels внутри createTestForm */
#teacher-create-test .form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* ============================================ */
/* Стили для таблиц администратора */
/* ============================================ */
#admin-all-tests table tbody tr {
    transition: background-color 0.2s ease;
}

#admin-all-tests table tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.08);
}

#admin-all-tests table tbody tr:hover td {
    color: var(--text-primary);
}

#admin-all-tests .btn-small {
    padding: 0.4rem 0.7rem;
    font-size: 0.85rem;
    margin: 0 0.25rem;
}

/* Модальное окно редактирования вопросов */
#modal-edit-test-questions .modal-content {
    background: var(--card-bg);
    border-radius: 12px;
}

#modal-edit-test-questions .form-group {
    margin-bottom: 1rem;
}

#modal-edit-test-questions .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

#modal-edit-test-questions .question-text,
#modal-edit-test-questions .answer-text {
    font-size: 0.95rem;
}

/* === НОВЫЕ СТИЛИ ДЛЯ ТЕСТА (ВСТАВИТЬ В КОНЕЦ ФАЙЛА) === */

/* Затемнение фона и блокировка кликов */
#student-test-modal {
    background: rgba(15, 23, 42, 0.95);
    /* Очень темный фон */
    backdrop-filter: blur(5px);
    /* Размытие заднего плана */
    z-index: 9999;
}

/* Огромное окно (почти на весь экран) */
#student-test-modal .modal-content {
    width: 95% !important;
    max-width: 1600px !important;
    height: 92vh !important;
    /* 92% высоты экрана */
    margin: 4vh auto !important;
    /* Центрирование */
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Красивый таймер */
#test-timer {
    font-family: monospace;
    font-size: 1.3rem !important;
    padding: 0.5rem 1rem !important;
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border-radius: 8px;
    border: 1px solid rgba(239, 68, 68, 0.3);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Область контента (скроллится только она) */
#student-test-modal .modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    background-color: var(--bg-color);
}

#test-question-area {
    max-width: 900px;
    margin: 3rem auto;
    padding: 3rem;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

/* Крупные ответы */
#test-question-area label {
    padding: 1.2rem 1.5rem !important;
    margin-bottom: 1rem !important;
    font-size: 1.1rem !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 12px !important;
    cursor: pointer;
    transition: all 0.2s;
}

#test-question-area label:hover {
    border-color: var(--primary-color) !important;
    background-color: rgba(37, 99, 235, 0.05) !important;
    transform: translateY(-2px);
}

/* === СТИЛИ ДЛЯ ОКНА ДОБАВЛЕНИЯ ПОЛЬЗОВАТЕЛЯ === */

/* Улучшенные поля ввода в модальном окне */
#modal-add-user input,
#modal-add-user select {
    width: 100%;
    padding: 12px 16px;
    /* Больше отступов внутри полей */
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

#modal-add-user input:focus,
#modal-add-user select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    /* Красивая подсветка при фокусе */
    outline: none;
}

/* Заголовки полей */
#modal-add-user label {
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* Адаптация под мобильные (чтобы колонки стали одной) */
@media (max-width: 768px) {
    #modal-add-user .modal-body>div {
        grid-template-columns: 1fr !important;
        /* Одна колонка на телефонах */
        gap: 1rem !important;
    }
}

/* === ИСПРАВЛЕНИЕ ТЕМНОЙ ТЕМЫ ДЛЯ ФОРМ (FINAL FIX) === */

/* 1. Сообщаем браузеру, что сайт поддерживает темную тему.
   Это заставит стандартные элементы (скроллбары, выпадающие списки) стать темными. */
[data-theme="dark"] {
    color-scheme: dark;
}

/* 2. Принудительный стиль для полей в модальном окне в темной теме.
   !important нужен, чтобы перебить inline-стили из HTML (rgba фон). */
[data-theme="dark"] #modal-add-user input,
[data-theme="dark"] #modal-add-user select {
    background-color: #0f172a !important;
    /* Очень темный фон (var(--bg-color)) */
    border-color: #334155 !important;
    /* Темная рамка */
    color: #f8fafc !important;
    /* Светлый текст */
}

/* 3. Стиль для выпадающих пунктов (Options) */
[data-theme="dark"] #modal-add-user select option {
    background-color: #0f172a;
    color: #f8fafc;
}

/* 4. Исправление желтого/белого фона при автозаполнении паролей браузером */
[data-theme="dark"] input:-webkit-autofill,
[data-theme="dark"] input:-webkit-autofill:hover,
[data-theme="dark"] input:-webkit-autofill:focus,
[data-theme="dark"] select:-webkit-autofill,
[data-theme="dark"] select:-webkit-autofill:hover,
[data-theme="dark"] select:-webkit-autofill:focus {
    -webkit-text-fill-color: #f8fafc;
    -webkit-box-shadow: 0 0 0px 1000px #0f172a inset;
    transition: background-color 5000s ease-in-out 0s;
}

/* Акцент при фокусе в темной теме */
[data-theme="dark"] #modal-add-user input:focus,
[data-theme="dark"] #modal-add-user select:focus {
    border-color: #3b82f6 !important;
    /* Синий акцент */
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3) !important;
}

/* === СТИЛИ ДЛЯ ОКНА СДАЧИ ЗАДАНИЯ (Student Submit) === */

/* Стили полей ввода для модального окна сдачи */
#modal-submit-assignment textarea,
#modal-submit-assignment input[type="file"] {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

#modal-submit-assignment textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
}

/* ИСПРАВЛЕНИЕ ТЕМНОЙ ТЕМЫ ДЛЯ ОКНА СДАЧИ */
/* Принудительно красим поля в темный цвет в темной теме */
[data-theme="dark"] #modal-submit-assignment textarea,
[data-theme="dark"] #modal-submit-assignment input[type="text"] {
    background-color: #0f172a !important;
    border-color: #334155 !important;
    color: #f8fafc !important;
}

/* Файл инпут в темной теме */
[data-theme="dark"] #modal-submit-assignment input[type="file"] {
    color: #f8fafc;
}

/* Sort buttons in table headers */
.btn-sort {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    margin-left: 0.25rem;
    font-size: 0.8rem;
    transition: color 0.2s;
}

.btn-sort:hover {
    color: var(--primary-color);
}

.btn-sort i {
    pointer-events: none;
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
}

.toast {
    background: var(--card-bg);
    border-left: 4px solid var(--primary-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    animation: slideIn 0.3s ease-out;
    min-width: 300px;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

.toast.error {
    border-left-color: var(--danger-color);
}

.toast.info {
    border-left-color: var(--primary-color);
}

.toast-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.toast.success .toast-icon {
    color: var(--success-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

.toast.error .toast-icon {
    color: var(--danger-color);
}

.toast.info .toast-icon {
    color: var(--primary-color);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.toast-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    flex-shrink: 0;
    transition: color 0.2s;
}

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

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

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

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }

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

@keyframes slideOutLeft {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(-100%);
        opacity: 0;
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }
}

.notification-count.pulse {
    animation: pulse 0.6s ease-in-out infinite;
}

.toast.fade-out {
    animation: slideOut 0.3s ease-out forwards;
}

/* Улучшенные стили для toast уведомлений в верхнем левом углу */
.notification-toast {
    background: white;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideInLeft 0.3s ease-out;
}

/* ---------------- */
/* Group Selection Styling */
/* ---------------- */
/* ---------------- */
/* Group Selection Styling */
/* ---------------- */
.checkbox-list-container {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: 400px;
    /* Increased max-height for better grid view */
}

.checkbox-list-header {
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.group-search-input {
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    background: var(--bg-color);
    color: var(--text-primary);
    outline: none;
    width: 150px;
    transition: border-color 0.2s, width 0.2s;
}

.group-search-input:focus {
    border-color: var(--primary-color);
    width: 180px;
}

.checkbox-list-body {
    overflow-y: auto;
    padding: 0.75rem;
    background: var(--card-bg);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    /* Responsive Grid */
    gap: 0.5rem;
}

/* Scrollbar for the list */
.checkbox-list-body::-webkit-scrollbar {
    width: 6px;
}

.checkbox-list-body::-webkit-scrollbar-track {
    background: transparent;
}

.checkbox-list-body::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.checkbox-list-body::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    cursor: pointer;
    border: 1px solid var(--border-color);
    /* Add border to each item */
    background-color: var(--bg-color);
}

.checkbox-item:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-dark);
}

/* Selected state styling could be added via JS class if needed */

/* Dark mode adjustment */
[data-theme="dark"] .checkbox-item {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
}

[data-theme="dark"] .checkbox-item:hover {
    background-color: rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

.checkbox-item label {
    display: flex;
    align-items: center;
    width: 100%;
    cursor: pointer;
    margin: 0;
    font-weight: 500;
    color: inherit;
    /* Inherit color from parent for hover effect */
    justify-content: flex-start;
    /* Force left alignment */
    gap: 0.5rem;
    /* Gap between checkbox and text */
}

.checkbox-item input[type="checkbox"] {
    margin: 0;
    /* Reset margin, use gap instead */
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
    flex-shrink: 0;
    /* Prevent checkbox from shrinking */
}


/* ===== SUBJECTS ADMIN — REDESIGN ===== */
#admin-subjects {
    padding: 28px;
}

/* ---- Top bar ---- */
.subj-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.subj-top-left {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.subj-top-left h2 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.subj-icon {
    font-size: 24px;
}

.subj-count-badge {
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    border-radius: 20px;
    padding: 4px 14px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.subj-warning {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border-radius: 20px;
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
}

.btn-add-subject {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-add-subject:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-icon {
    font-size: 18px;
    font-weight: 700;
}

/* ---- Add panel ---- */
.subj-add-panel {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border-left: 4px solid #6366f1;
    animation: slideDown 0.3s ease;
}

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

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

.subj-add-panel h3 {
    margin: 0 0 18px 0;
    font-size: 16px;
    font-weight: 600;
}

.subj-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 18px;
}

.subj-form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.subj-form-field.full-width {
    grid-column: 1 / -1;
}

.subj-form-field label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.7;
}

.subj-input {
    padding: 10px 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: inherit;
    font-size: 14px;
    width: 100%;
    box-sizing: border-box;
    transition: all 0.2s;
}

.subj-input:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.subj-input option {
    background: #1e293b;
}

.subj-form-actions {
    display: flex;
    gap: 10px;
}

.btn-save {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: none;
    padding: 10px 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 10px rgba(16, 185, 129, 0.3);
}

.btn-save:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-cancel {
    background: rgba(255, 255, 255, 0.08);
    color: inherit;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 22px;
    border-radius: 10px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ---- Filters bar ---- */
.subj-filters-bar {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 24px;
}

/* Semester tabs */
.subj-semester-tabs {
    display: flex;
    gap: 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 4px;
    width: fit-content;
}

.sem-tab {
    padding: 9px 24px;
    border: none;
    border-radius: 9px;
    background: transparent;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.sem-tab:hover {
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.05);
}

.sem-tab.active {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.4);
}

/* Group filter */
.subj-group-filter {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.subj-filter-label {
    font-size: 13px;
    font-weight: 600;
    opacity: 0.5;
    white-space: nowrap;
}

.subj-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.subj-pill {
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.subj-pill:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.4);
    color: white;
}

.subj-pill.active {
    background: rgba(99, 102, 241, 0.25);
    border-color: #6366f1;
    color: #a5b4fc;
    font-weight: 600;
}

/* ---- Cards Grid ---- */
.subj-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 16px;
}

.subj-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 14px;
    padding: 20px;
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
    overflow: hidden;
}

.subj-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6);
    opacity: 0;
    transition: opacity 0.25s;
}

.subj-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

.subj-card:hover::before {
    opacity: 1;
}

.subj-card.no-teacher {
    border-left: 3px solid rgba(239, 68, 68, 0.5);
}

.subj-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
}

.subj-card-name {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    flex: 1;
    word-break: break-word;
}

.subj-card-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.subj-card-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-edit {
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
}

.btn-edit:hover {
    background: rgba(99, 102, 241, 0.35);
    transform: scale(1.1);
}

.btn-del-card {
    background: rgba(239, 68, 68, 0.12);
    color: #fca5a5;
}

.btn-del-card:hover {
    background: rgba(239, 68, 68, 0.3);
    transform: scale(1.1);
}

.subj-card-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.subj-meta-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
}

.tag-group {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

.tag-semester {
    background: rgba(139, 92, 246, 0.15);
    color: #c4b5fd;
}

.tag-teacher {
    background: rgba(16, 185, 129, 0.12);
    color: #6ee7b7;
}

.tag-no-teacher {
    background: rgba(239, 68, 68, 0.12);
    color: #fca5a5;
    font-style: italic;
}

/* ---- Semester Section Headers ---- */
.sem-section {
    grid-column: 1 / -1;
}

.sem-section-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.35);
    padding: 8px 0;
    margin: 8px 0 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sem-section-title::before {
    content: '';
    width: 18px;
    height: 2px;
    background: #6366f1;
    border-radius: 1px;
}

/* ---- Empty + Loading states ---- */
.subj-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    opacity: 0.4;
    font-size: 15px;
}

.subj-empty-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
}

.subj-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px;
    opacity: 0.5;
}

/* ---- Edit Modal ---- */
.subj-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.subj-modal {
    background: #1e293b;
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 18px;
    padding: 28px;
    width: 90%;
    max-width: 520px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.97);
    }

    to {
        opacity: 1;
    }
}

.subj-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
}

.subj-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.subj-modal-close {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    color: rgba(255, 255, 255, 0.6);
    width: 34px;
    height: 34px;
    border-radius: 10px;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.subj-modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

#studentScheduleList {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Общий блок */
.schedule-item {
    width: 100%;
}

/* 🖼 Картинки */
.schedule-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* 📄 PDF */
.schedule-pdf {
    width: 100%;
    height: 90vh;
    border: none;
    border-radius: 8px;
}

/* ======= LIGHT THEME OVERRIDES ======= */
[data-theme="light"] .subj-count-badge {
    background: rgba(99, 102, 241, 0.12);
    color: #4f46e5;
}

[data-theme="light"] .subj-warning {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

[data-theme="light"] .subj-add-panel {
    background: #ffffff;
    backdrop-filter: none;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #6366f1;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .subj-add-panel h3 {
    color: #1e293b;
}

[data-theme="light"] .subj-form-field label {
    color: #475569;
    opacity: 1;
}

[data-theme="light"] .subj-input {
    background: #f8fafc;
    border: 1px solid #d1d5db;
    color: #1e293b;
}

[data-theme="light"] .subj-input:focus {
    background: #ffffff;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

[data-theme="light"] .subj-input option {
    background: #ffffff;
    color: #1e293b;
}

[data-theme="light"] .btn-cancel {
    background: #f1f5f9;
    color: #475569;
    border: 1px solid #d1d5db;
}

[data-theme="light"] .btn-cancel:hover {
    background: #e2e8f0;
}

/* Semester tabs - light */
[data-theme="light"] .subj-semester-tabs {
    background: #f1f5f9;
}

[data-theme="light"] .sem-tab {
    color: #64748b;
}

[data-theme="light"] .sem-tab:hover {
    color: #1e293b;
    background: #e2e8f0;
}

[data-theme="light"] .sem-tab.active {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
}

/* Group pills - light */
[data-theme="light"] .subj-pill {
    border: 1px solid #d1d5db;
    background: #ffffff;
    color: #475569;
}

[data-theme="light"] .subj-pill:hover {
    background: rgba(99, 102, 241, 0.06);
    border-color: rgba(99, 102, 241, 0.4);
    color: #4f46e5;
}

[data-theme="light"] .subj-pill.active {
    background: rgba(99, 102, 241, 0.1);
    border-color: #6366f1;
    color: #4f46e5;
}

[data-theme="light"] .subj-filter-label {
    color: #64748b;
    opacity: 1;
}

/* Cards - light */
[data-theme="light"] .subj-card {
    background: #ffffff;
    backdrop-filter: none;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .subj-card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .subj-card.no-teacher {
    border-left: 3px solid rgba(239, 68, 68, 0.6);
}

[data-theme="light"] .subj-card-name {
    color: #1e293b;
}

/* Card action buttons - light */
[data-theme="light"] .btn-edit {
    background: rgba(99, 102, 241, 0.1);
    color: #4f46e5;
}

[data-theme="light"] .btn-edit:hover {
    background: rgba(99, 102, 241, 0.2);
}

[data-theme="light"] .btn-del-card {
    background: rgba(239, 68, 68, 0.08);
    color: #ef4444;
}

[data-theme="light"] .btn-del-card:hover {
    background: rgba(239, 68, 68, 0.18);
}

/* Meta tags - light */
[data-theme="light"] .tag-group {
    background: rgba(59, 130, 246, 0.08);
    color: #2563eb;
}

[data-theme="light"] .tag-semester {
    background: rgba(139, 92, 246, 0.08);
    color: #7c3aed;
}

[data-theme="light"] .tag-teacher {
    background: rgba(16, 185, 129, 0.08);
    color: #059669;
}

[data-theme="light"] .tag-no-teacher {
    background: rgba(239, 68, 68, 0.08);
    color: #dc2626;
}

/* Section titles - light */
[data-theme="light"] .sem-section-title {
    color: #94a3b8;
    border-bottom-color: #e2e8f0;
}

/* Empty & loading - light */
[data-theme="light"] .subj-empty {
    color: #94a3b8;
}

/* Modal - light */
[data-theme="light"] .subj-modal {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .subj-modal-header h3 {
    color: #1e293b;
}

[data-theme="light"] .subj-modal-close {
    background: #f1f5f9;
    color: #64748b;
}

[data-theme="light"] .subj-modal-close:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .subj-cards-grid {
        grid-template-columns: 1fr;
    }

    .subj-form-grid {
        grid-template-columns: 1fr;
    }

    .subj-top-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .subj-semester-tabs {
        width: 100%;
    }

    .sem-tab {
        flex: 1;
        text-align: center;
    }
}