/*
================================================
  THEME INSPIRED BY LINGANO.COM - MODERN & VIBRANT
================================================
  Author: Gemini Enterprise
  Version: 2.0
*/

/* --- Import Google Font - Vazirmatn --- */
@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@300;400;500;600;700;800&display=swap');

/* --- Root Variables --- */
:root {
    /* Color Palette - Inspired by Lingano's vibrant style */
    --primary-start: #6A11CB;   /* Vibrant Purple */
    --primary-end: #2575FC;     /* Bright Blue */
    --primary-bg: linear-gradient(135deg, var(--primary-start), var(--primary-end));
    --secondary: #00C9FF;
    --secondary-end: #92FE9D;
    --secondary-bg: linear-gradient(135deg, var(--secondary), var(--secondary-end));
    --success: #10B981;         /* Fresh Green */
    --danger: #EF4444;          /* Clear Red */
    --warning: #F59E0B;         /* Bright Amber */
    --info: #3B82F6;            /* Calm Blue */
    --dark: #111827;            /* Deeper Dark for strong contrast */
    --gray-900: #1F2937;
    --gray-700: #374151;
    --gray-500: #6B7280;        /* Softer Gray for secondary text */
    --gray-300: #D1D5DB;
    --gray-100: #F3F4F6;        /* Lighter Gray for backgrounds */
    --white: #FFFFFF;
    --border-color: #E5E7EB;

    /* Sizing & Spacing */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --content-padding-base: 25px;
    --content-padding-lg: 35px;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- General Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--gray-100);
    color: var(--gray-700);
    font-family: 'Vazirmatn', sans-serif;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    direction: rtl;
    text-align: right;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--content-padding-base);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--border-color); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }

/*
================================================
  Homepage & General Sections
================================================
*/

.home-page { background-color: var(--gray-100); }
.dashboard-body { background-color: var(--gray-100); } /* Consistent background for dashboard */

.main-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 15px 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-content { display: flex; justify-content: space-between; align-items: center; }

.logo-section { display: flex; align-items: center; gap: 12px; }

.logo-image { width: 45px; height: 45px; border-radius: var(--radius-sm); object-fit: contain; }

.logo-section h1 { color: var(--dark); font-size: 1.6rem; font-weight: 800; margin-bottom: 2px; }

.logo-section span { color: var(--gray-500); font-size: 0.85rem; font-weight: 500; }

.main-nav { display: flex; align-items: center; gap: 10px; }

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.nav-link:hover {
    background: var(--gray-100);
    color: var(--primary-start);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--primary-bg);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

section {
    padding: 80px 0;
}

.section-header { text-align: center; margin-bottom: 60px; }

.section-header h2 {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: var(--primary-bg);
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(106, 17, 203, 0.4);
}

.section-header p { font-size: 1.15rem; color: var(--gray-500); max-width: 650px; margin: 30px auto 0; }

.videos-grid, .news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 35px; }

.video-card, .news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--border-color);
}

.video-card:hover, .news-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
}

.video-header, .news-body { padding: var(--content-padding-base); }

.video-header h4, .news-body h3 { margin: 0 0 10px 0; color: var(--dark); font-size: 1.25rem; font-weight: 700; }

.video-meta { color: var(--gray-500); font-size: 0.9rem; }

/* Existing video container for iframes */
.video-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; background-color: var(--gray-900); }
.video-container iframe, .video-container object, .video-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }


/* START ADDITION: CSS for News Videos and Thumbnails */
.news-video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    margin-bottom: 10px; /* Space between video and footer */
    border-radius: var(--radius-md); /* Apply radius to wrapper */
    background-color: #000;
}

.news-video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    background-color: #000; /* Black background for videos */
    object-fit: cover;
}

.news-video-wrapper .download-video-btn {
    position: absolute;
    top: 10px;
    left: 10px; /* Adjusted for RTL */
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.9em;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: background-color 0.2s;
}

.news-video-wrapper .download-video-btn:hover {
    background-color: rgba(0, 0, 0, 0.9);
}

.news-placeholder-image.video-indicator {
    background-color: var(--gray-700); /* Darker background for video placeholder */
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px; /* Ensure it has some height */
    font-size: 4em; /* Larger icon */
    border-radius: var(--radius-md);
}
.news-placeholder-image.video-indicator i {
    font-size: 1em; /* Adjust relative to parent font size */
}
/* END ADDITION: CSS for News Videos and Thumbnails */

.video-footer { padding: 20px var(--content-padding-base); background-color: var(--gray-100); border-top: 1px solid var(--border-color); }
.video-footer p, .news-body p { margin: 0; color: var(--gray-500); font-size: 1rem; }

.video-error {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--danger);
    font-size: 1.1rem;
    background-color: var(--gray-100);
}
.video-error i { margin-left: 10px; }

.news-thumb { height: 220px; overflow: hidden; border-radius: var(--radius-lg) var(--radius-lg) 0 0; } /* Apply border-radius to top corners */
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }

.news-card:hover .news-thumb img { transform: scale(1.1); }

.news-placeholder-image {
    width: 100%;
    height: 100%;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
}

.news-date { font-size: 0.9rem; color: var(--gray-500); margin-bottom: 12px; }
.news-date i { margin-left: 6px; }

.btn-primary-outline {
    border: 2px solid var(--primary-start);
    color: var(--primary-start);
    background: transparent;
    padding: 10px 25px;
    border-radius: 50px;
    display: inline-block;
    transition: all var(--transition);
    font-weight: 600;
    text-decoration: none;
}

.btn-primary-outline:hover {
    background: var(--primary-start);
    color: var(--white) !important;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* --- Single News Page --- */
.news-single-container {
    max-width: 900px;
    margin: 50px auto;
    padding: var(--content-padding-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.news-single-header { padding-bottom: 25px; margin-bottom: 25px; border-bottom: 2px solid var(--border-color); }
.news-single-header h1 { font-size: 2.5rem; font-weight: 800; color: var(--dark); line-height: 1.4; }
.news-single-meta { color: var(--gray-500); font-size: 0.95rem; margin-top: 15px; }
.news-single-meta i { margin-left: 8px; color: var(--primary-start); }
.news-single-content { line-height: 2.2; font-size: 1.1rem; color: var(--gray-700); margin-bottom: 40px; white-space: pre-line; }

.news-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.news-gallery img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.news-gallery img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

/* Ensure videos in gallery also have styling */
.news-gallery .news-video-wrapper {
    height: 200px; /* Match image height for grid consistency */
    padding-bottom: 0; /* Override aspect ratio padding for fixed height */
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gray-100);
    color: var(--dark);
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    transition: all var(--transition);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.back-btn:hover {
    background: var(--dark);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* --- Site Footer --- */
.site-footer {
    background-color: var(--dark);
    color: var(--gray-300);
    padding: 70px 0 25px 0;
    font-size: 1rem;
}

.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; margin-bottom: 50px; }

.footer-section h4 { color: var(--white); margin-bottom: 25px; font-size: 1.3rem; position: relative; padding-bottom: 12px; }
.footer-section h4::after { content: ''; position: absolute; bottom: 0; right: 0; width: 50px; height: 4px; background: var(--primary-bg); }
.footer-section p { line-height: 1.9; color: var(--gray-300); }
.footer-section ul { list-style: none; padding: 0; }
.footer-section ul li a { color: var(--gray-300); text-decoration: none; display: block; padding: 8px 0; transition: color 0.3s, transform 0.3s; }
.footer-section ul li a:hover { color: var(--white); transform: translateX(-8px); }

.social-icons { margin-top: 25px; display: flex; gap: 15px; }
.social-icons a { display: inline-flex; align-items: center; justify-content: center; width: 45px; height: 45px; background-color: var(--gray-700); color: var(--white); border-radius: 50%; font-size: 20px; transition: all var(--transition); }
.social-icons a:hover { transform: translateY(-5px) scale(1.1); box-shadow: var(--shadow-xl); }
.social-icons a[href*="t.me"]:hover { background-color: #0088cc; }
.social-icons a[href*="instagram.com"]:hover { background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%,#d6249f 60%,#285AEB 90%); }

.footer-bottom { border-top: 1px solid var(--gray-700); padding-top: 25px; text-align: center; font-size: 0.9rem; color: var(--gray-500); }

/*
================================================
  Dashboard Styles
================================================
*/

.dashboard { display: flex; min-height: 100vh; background-color: var(--gray-100); }

.sidebar {
    width: 260px;
    background: var(--white);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width var(--transition), left var(--transition);
    box-shadow: var(--shadow-lg);
}

.sidebar-header { padding: var(--content-padding-base); border-bottom: 1px solid var(--border-color); margin-bottom: 15px; }
.sidebar-header h2 { font-size: 1.3rem; font-weight: 700; display: flex; align-items: center; gap: 12px; color: var(--dark); }

.sidebar-menu { list-style: none; padding: 0 15px; }
.sidebar-menu a { display: flex; align-items: center; gap: 15px; padding: 14px 20px; color: var(--gray-500); text-decoration: none; transition: all var(--transition); border-radius: var(--radius-md); font-weight: 600; margin-bottom: 5px; }
.sidebar-menu a:hover { background: var(--gray-100); color: var(--primary-start); }
.sidebar-menu a.active { background: var(--primary-bg); color: white; box-shadow: 0 7px 15px -3px rgba(106, 17, 203, 0.4); }
.sidebar-menu i { font-size: 1.2rem; width: 24px; text-align: center; }

.main-content { flex: 1; display: flex; flex-direction: column; }

.header {
    background: var(--white);
    padding: 20px var(--content-padding-base);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
}

.header h1 { color: var(--dark); font-size: 1.8rem; font-weight: 800; }

.user-info { display: flex; align-items: center; gap: 15px; }

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.4rem;
    font-weight: 700;
}

.user-info div div { font-weight: 700; color: var(--dark); }
.user-info div small { font-size: 0.85rem; color: var(--gray-500); }

.mobile-menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--gray-700); }

.content { flex: 1; padding: var(--content-padding-base); overflow-y: auto; }

.content-section { display: none; }
.content-section.active { display: block; animation: fadeIn 0.5s cubic-bezier(0.39, 0.575, 0.565, 1); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* --- Cards & General Elements --- */

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--content-padding-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--content-padding-lg);
    border: 1px solid var(--border-color);
}

.card h3 { margin-bottom: 25px; color: var(--dark); display: flex; align-items: center; gap: 12px; font-size: 1.4rem; font-weight: 700; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 25px; margin-bottom: 35px; }

.stat-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--border-color);
}

.stat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

.stat-icon { width: 55px; height: 55px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: white; box-shadow: var(--shadow-md); }

.stat-icon.primary { background: var(--primary-bg); }
.stat-icon.success { background: linear-gradient(135deg, var(--success), #34D399); }
.stat-icon.warning { background: linear-gradient(135deg, var(--warning), #FBBF24); }

.stat-value { font-size: 2.2rem; font-weight: 800; color: var(--dark); line-height: 1.2; }
.stat-label { font-size: 1rem; color: var(--gray-500); font-weight: 500; }

/* Mini Stats (for student list, etc.) */
.mini-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 25px;
    justify-content: center;
}

.mini-stat-card {
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    padding: 15px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.mini-stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-start);
    margin-bottom: 5px;
}

.mini-stat-label {
    font-size: 0.9rem;
    color: var(--dark);
    font-weight: 500;
}

/* Password Field Toggle */
.password-field {
    cursor: pointer;
    display: inline-block;
    padding: 5px 0;
    min-width: 100px;
}
.password-field .masked, .password-field .actual { font-family: 'Vazirmatn', sans-serif; }

/* Welcome Card (for empty states) */
.welcome-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--content-padding-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    grid-column: 1 / -1; /* Make it span all columns in a grid */
    border: 1px solid var(--border-color);
}

.welcome-card .welcome-icon { font-size: 3rem; color: var(--primary-start); margin-bottom: 20px; }
.welcome-card h3 { font-size: 1.5rem; color: var(--dark); margin-bottom: 10px; }
.welcome-card p { color: var(--gray-500); font-size: 1rem; }

/* --- Forms & Buttons --- */
.form-row { display: flex; gap: 25px; margin-bottom: 20px; flex-wrap: wrap; }
.form-group { flex: 1; min-width: 220px; margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 10px; font-weight: 600; font-size: 0.95rem; color: var(--dark); }
.form-group small { color: var(--gray-500); font-size: 0.8rem; margin-top: 5px; display: block; }

.form-control {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: all var(--transition);
    background-color: var(--white);
    font-family: 'Vazirmatn', sans-serif;
    color: var(--dark);
}

.form-control:focus {
    border-color: var(--primary-start);
    box-shadow: 0 0 0 4px rgba(106, 17, 203, 0.15);
    outline: none;
}

.form-group.login-form-group .form-control + .fa-eye,
.form-group.login-form-group .form-control + .fa-eye-slash {
    position: absolute;
    left: 15px; /* Adjusted for RTL */
    top: calc(50% + 15px); /* Adjust based on label and input padding */
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--gray-500);
    transition: color var(--transition);
}

.form-group.login-form-group .form-control + .fa-eye:hover,
.form-group.login-form-group .form-control + .fa-eye-slash:hover {
    color: var(--primary-start);
}

.btn {
    padding: 14px 32px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-primary { background: var(--primary-bg); color: white; }
.btn-primary:hover { filter: brightness(1.1); }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { filter: brightness(1.1); }

.btn-success { background: var(--success); color: white; }
.btn-success:hover { filter: brightness(1.1); }

.btn-warning { background: var(--warning); color: var(--dark); } /* Changed warning button text to dark for better contrast */
.btn-warning:hover { filter: brightness(1.1); }

.btn-info { background: var(--info); color: white; }
.btn-info:hover { filter: brightness(1.1); }

.btn-secondary { background: var(--gray-100); color: var(--dark); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--gray-300); }

.btn-sm { padding: 10px 20px; font-size: 0.9rem; }
.btn-lg { padding: 18px 40px; font-size: 1.1rem; }

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

.btn-rounded { border-radius: 50px; }

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    margin-bottom: var(--content-padding-base);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    line-height: 1.5;
    box-shadow: var(--shadow-sm);
    border-width: 1px;
    border-style: solid;
}

.alert i { font-size: 1.2rem; }
.alert strong { font-weight: 700; }

.alert-error { background-color: #fef2f2; color: #ef4444; border-color: #fca5a5; }
.alert-success { background-color: #ecfdf5; color: #10b981; border-color: #a7f3d0; }
.alert-warning { background-color: #fffbeb; color: #f59e0b; border-color: #fcd34d; }
.alert-info { background-color: #eff6ff; color: #3b82f6; border-color: #bfdbfe; }

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.badge-primary { background-color: var(--primary-start); color: var(--white); }
.badge-success { background-color: var(--success); color: var(--white); }
.badge-danger { background-color: var(--danger); color: var(--white); }
.badge-warning { background-color: var(--warning); color: var(--dark); } /* Changed warning badge text to dark */
.badge-info { background-color: var(--info); color: var(--white); }

/* --- Tables --- */
.table-container {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow-x: auto; /* Changed to overflow-x for horizontal scrolling */
    background: var(--white);
    box-shadow: var(--shadow-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

table th, table td {
    padding: 18px;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

table th {
    background: var(--gray-100);
    color: var(--gray-500);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table tbody tr:last-child td { border-bottom: none; }
table tbody tr:hover { background-color: #f7f3ff; } /* Light hover effect */

.action-buttons { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-start; }

/* --- Modals --- */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0; top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto; /* Adjusted for better vertical centering with flex */
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 800px;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
    overflow: hidden;
}

@keyframes modalSlideIn { from { opacity: 0; transform: translateY(-50px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }

.modal-header {
    background: var(--gray-100);
    padding: var(--content-padding-base) var(--content-padding-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 { margin: 0; font-size: 1.4rem; color: var(--dark); }

.close { color: var(--gray-500); font-size: 32px; cursor: pointer; transition: all var(--transition); }
.close:hover { color: var(--danger); transform: rotate(90deg) scale(1.1); }

.modal-body { padding: var(--content-padding-lg); max-height: 70vh; overflow-y: auto; }

.modal-footer {
    padding: 20px var(--content-padding-lg);
    background: var(--gray-100);
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    border-top: 1px solid var(--border-color);
}

.quick-actions { display: flex; flex-wrap: wrap; gap: 15px; }

/* --- Popups (new) --- */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: none; /* Hidden by default */
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.popup-container {
    background: var(--white);
    padding: var(--content-padding-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    position: relative;
    max-width: 90%;
    width: 500px;
    animation: popup-scale-in 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    text-align: center;
}

@keyframes popup-scale-in {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.popup-close {
    position: absolute;
    top: -15px;
    left: -15px;
    width: 40px;
    height: 40px;
    background: var(--danger);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(255, 77, 77, 0.5);
    transition: transform 0.2s, background 0.2s;
}

.popup-close:hover {
    background: #e60000; /* Darker red */
    transform: scale(1.1) rotate(90deg);
}

.popup-content {
    font-size: 1.1rem;
    color: var(--dark);
    line-height: 1.8;
    max-height: 70vh;
    overflow-y: auto;
}

.popup-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin-top: 15px;
}

/* --- Hero Slider (Banners) --- */
.hero-slider {
    width: 100%;
    max-width: 1280px;
    margin: 20px auto 40px;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    background: var(--gray-900);
}

.hero-slider .slide {
    width: 100%;
    height: 350px; /* Default height */
    display: none;
}

.hero-slider .slide.active {
    display: block;
}

@media (min-width: 768px) {
    .hero-slider .slide {
        height: 450px;
    }
}

@media (min-width: 1024px) {
    .hero-slider .slide {
        height: 500px;
    }
}

.hero-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-slider .slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.5);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 5;
    transition: all var(--transition);
}

.hero-slider .slider-btn:hover {
    background: rgba(0,0,0,0.8);
    transform: translateY(-50%) scale(1.1);
}

.hero-slider .slider-btn.prev {
    right: 15px;
}

.hero-slider .slider-btn.next {
    left: 15px;
}

.hero-slider .slider-btn i {
    font-size: 20px;
}

.hero-slider .slider-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 5;
}

.hero-slider .slider-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.6);
    cursor: pointer;
    padding: 0;
    transition: all var(--transition);
}

.hero-slider .slider-dots button.active {
    background: var(--white);
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
}

.hero-slider.no-controls .slider-btn,
.hero-slider.no-controls .slider-dots {
    display: none !important;
}

/* --- Chatbot (new) --- */
.chatbot-widget {
    position: fixed;
    bottom: 25px;
    right: 25px;
    z-index: 1000;
    font-family: 'Vazirmatn', sans-serif;
}

.chatbot-button {
    background: var(--primary-bg);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 65px;
    height: 65px;
    font-size: 30px;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.chatbot-button:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 8px 20px rgba(106, 17, 203, 0.4);
}

.chatbot-window {
    display: none;
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 350px;
    height: 500px;
    box-shadow: var(--shadow-xl);
    flex-direction: column;
    overflow: hidden;
    position: absolute;
    bottom: 85px;
    right: 0;
}

.chatbot-window.active {
    display: flex;
}

.chat-header {
    background: var(--primary-bg);
    color: var(--white);
    padding: 15px;
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
}

#chatMessages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    background: var(--gray-100);
    border-bottom: 1px solid var(--border-color);
}

.chat-message {
    margin: 12px 0;
    padding: 12px 18px;
    border-radius: var(--radius-md);
    max-width: 85%;
    word-wrap: break-word;
    line-height: 1.6;
}

.chat-message.user {
    background: var(--primary-start);
    color: var(--white);
    margin-left: auto;
    margin-right: unset;
    border-bottom-right-radius: var(--radius-sm);
}

.chat-message.bot {
    background: var(--white);
    color: var(--dark);
    margin-right: auto;
    margin-left: unset;
    border: 1px solid var(--border-color);
    border-bottom-left-radius: var(--radius-sm);
}

.chat-message.bot small {
    line-height:1.7;
    color:var(--gray-500);
}

.chat-input-area {
    padding: 10px;
    background: var(--white);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

#chatInput {
    flex: 1;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 14px;
    transition: all var(--transition);
    font-family: 'Vazirmatn', sans-serif;
    color: var(--dark);
}

#chatInput:focus {
    border-color: var(--primary-start);
    box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.1);
    outline: none;
}

.send-btn {
    background: var(--primary-start);
    color: var(--white);
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--primary-end);
}

/* Specific styles for intro section counts */
.intro-stats-grid {
    margin-top:40px;
    display:flex;
    justify-content:center;
    gap:25px;
    flex-wrap:wrap;
}

.intro-stat-item {
    background:var(--white);
    padding:20px;
    border-radius:var(--radius-md);
    min-width:160px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

.intro-stat-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.intro-stat-item i {
    font-size:2.5rem;
    margin-bottom:15px;
    display: block;
}

.intro-stat-item h4 {
    color:var(--dark);
    font-weight: 700;
    font-size: 1.2rem;
}

.intro-stat-item i.fa-users { color:var(--success); }
.intro-stat-item i.fa-chalkboard-teacher { color:var(--info); }
.intro-stat-item i.fa-trophy { color:var(--warning); }

/* Contact Section details */
.contact-info-grid {
    display:flex;
    justify-content:center;
    gap:30px;
    flex-wrap:wrap;
    margin-top: 30px;
}

.contact-info-item {
    text-align:center;
    background:var(--white);
    padding:25px;
    border-radius:var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: transform var(--transition);
}

.contact-info-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-info-item i {
    font-size:2.5rem;
    margin-bottom:15px;
    display: block;
}

.contact-info-item h4 {
    color:var(--dark);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.contact-info-item p {
    color:var(--gray-500);
    margin: 0;
    font-size: 1rem;
}

.contact-info-item i.fa-map-marker-alt { color:var(--danger); }
.contact-info-item i.fa-phone { color:var(--success); }
.contact-info-item i.fa-envelope { color:var(--info); }

/* Tech Team section */
.tech-team-section h3 {
    color:var(--dark);
    margin-top:30px;
    margin-bottom:15px;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.tech-team-section p.contact-number {
    color:var(--primary-start);
    font-size:1.3rem;
    font-weight:bold;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

/* Login Container */
.login-form-group { position: relative; }
.login-form-group .fa-eye,
.login-form-group .fa-eye-slash {
    position: absolute;
    left: 15px; /* Adjusted for RTL */
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--gray-500);
    transition: color var(--transition);
}

.login-form-group .fa-eye:hover,
.login-form-group .fa-eye-slash:hover {
    color: var(--primary-start);
}

/* General utility classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-dark { color: var(--dark); }
.text-gray { color: var(--gray-500); }
.font-size-0-9 { font-size: 0.9rem; }
.font-size-1-1 { font-size: 1.1rem; }
.font-size-1-2 { font-size: 1.2rem; }
.font-weight-bold { font-weight: bold; }
.line-height-1-8 { line-height: 1.8; }
.max-width-800 { max-width: 800px; }
.max-width-600 { max-width: 600px; }
.margin-auto { margin-left: auto; margin-right: auto; }
.margin-top-10 { margin-top: 10px; }
.margin-top-15 { margin-top: 15px; }
.margin-top-20 { margin-top: 20px; }
.margin-top-30 { margin-top: 30px; }
.margin-top-40 { margin-top: 40px; }
.margin-bottom-15 { margin-bottom: 15px; }
.margin-bottom-20 { margin-bottom: 20px; }
.margin-bottom-30 { margin-bottom: 30px; }
.margin-top-minus-10 { margin-top: -10px; }
.padding-50 { padding: 50px; }
.list-unstyled { list-style: none; padding-right: 0; }
.list-spaced li { margin-bottom: 8px; }
.list-spaced li:last-child { margin-bottom: 0; }

.img-preview {
    max-width:200px;
    max-height:80px;
    border-radius:6px;
    object-fit:cover;
}

.img-preview-sm {
    max-width:150px; /* Adjusted for consistency */
    max-height:70px; /* Adjusted for consistency */
    border-radius:6px;
    object-fit:cover;
}

.direction-ltr { direction: ltr; }

.empty-table-message {
    text-align:center;
    padding:20px;
    color:var(--gray-500);
}

.empty-table-icon {
    font-size:2.5rem; /* Slightly larger */
    margin-bottom:10px;
    display:block;
    color: var(--gray-300); /* Lighter icon */
}

.scrollable-content {
    max-height:100px;
    overflow-y:auto;
    background: var(--gray-100);
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

/* Video Fullscreen Button */
.video-controls {
    position: absolute;
    bottom: 10px;
    left: 10px;
    z-index: 10;
}

.btn-fullscreen {
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px; /* Slightly larger */
    height: 40px; /* Slightly larger */
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s;
    padding: 0;
    font-size: 16px; /* Slightly larger */
}

.btn-fullscreen:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        left: -260px; /* Hidden by default */
        top: 0;
        height: 100%;
        z-index: 1100;
        box-shadow: var(--shadow-xl);
        background: var(--white); /* Ensure it has a background */
    }
    .dashboard.sidebar-open .sidebar {
        left: 0;
    }
    .mobile-menu-toggle {
        display: flex; /* Show toggle button on smaller screens */
        margin-right: 15px; /* Add some space */
    }
    .header h1 { font-size: 1.3rem; }
    .chatbot-widget {
        bottom: 15px;
        right: 15px;
    }
    .chatbot-window {
        bottom: 70px;
        right: 0;
        width: 300px;
        height: 400px;
    }
}

@media (max-width: 768px) {
    body { line-height: 1.7; }
    .container { padding: 0 15px; }
    .section-header h2 { font-size: 2.2rem; }
    .header-content { flex-direction: column; gap: 20px; }
    .main-nav { margin-top: 15px; } /* Space out nav from logo */
    .videos-grid, .news-grid { grid-template-columns: 1fr; }
    .hero-slider { margin: 15px auto 30px; }
    .hero-slider .slide { height: 250px; }
    .dashboard { flex-direction: column; }
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        padding: 15px 20px;
    }
    .header h1 { order: 1; }
    .user-info { order: 2; }
    .content { padding: 15px; }
    .card, .modal-body, .modal-footer, .modal-header { padding: 20px; }
    .form-row { flex-direction: column; gap: 15px; }
    .form-group { min-width: unset; } /* Allow form groups to take full width */
    .stats-grid { grid-template-columns: 1fr; }
    .intro-stats-grid { flex-direction: column; gap: 20px; }
    .contact-info-grid { flex-direction: column; gap: 20px; }
    .tech-team-section p.contact-number { font-size: 1.1rem; }
    .news-single-header h1 { font-size: 1.8rem; }
    .news-single-content { font-size: 1rem; line-height: 1.8; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-section { text-align: center; }
    .footer-section h4::after { left: 50%; transform: translateX(-50%); }
    .social-icons { justify-content: center; }
    .btn-lg { padding: 15px 30px; font-size: 1rem; }
    .action-buttons { justify-content: center; }
}

@media (max-width: 480px) {
    .section-header h2 { font-size: 1.8rem; }
    .hero-slider .slide { height: 200px; } /* Even smaller for very small mobiles */
    .chatbot-window { width: 95%; max-width: 300px; right: 2.5%; bottom: 80px; }
    .chatbot-button { width: 55px; height: 55px; font-size: 24px; }
    .chatbot-widget { bottom: 10px; right: 10px; }
    .news-thumb { height: 180px; }
    .modal-content { max-width: 95%; margin: 10% auto; }
}