:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    --saturday-color: #667eea;
    --sunday-color: #764ba2;
    --monday-color: #f5576c;
    
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-light: #718096;
    
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    
    --dark-bg: #0f172a;
    --dark-card: #1e293b;
    --dark-text: #e2e8f0;
    --dark-text-secondary: #94a3b8;
    
    --font-arabic: 'Cairo', 'Noto Sans Arabic', sans-serif;
    --font-english: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --border-radius-xl: 24px;
    --border-radius-lg: 20px;
    --border-radius-md: 16px;
    --border-radius-sm: 12px;
    --border-radius-xs: 8px;
    
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-fast: all 0.2s ease;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);
    
    --header-height: 80px;
    --sidebar-width: 320px;
    --max-width: 1400px;
}

[data-theme="dark"] {
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-light: #64748b;
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-arabic);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body[data-theme="dark"] {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(102, 126, 234, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(245, 87, 108, 0.1) 0%, transparent 30%);
    z-index: -1;
    animation: gradientShift 20s ease infinite alternate;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

.header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
    margin: 24px 24px 32px;
    padding: 24px 32px;
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
    z-index: 10;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.1;
    z-index: -1;
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
    position: relative;
    z-index: 2;
}

.main-title {
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.main-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: 8px;
}

.section-info {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 16px 24px;
    margin: 12px 0;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.section-info:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(102, 126, 234, 0.3);
}

.current-section {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.current-section i {
    font-size: 1.4rem;
    color: var(--saturday-color);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.controls {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.toggle-btn {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.toggle-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.toggle-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.toggle-btn:hover::before {
    opacity: 0.1;
}

.toggle-btn:active {
    transform: translateY(-2px) scale(0.98);
}

.mobile-nav {
    display: none;
    flex-direction: column;
    margin-bottom: 24px;
    width: 100%;
}

.mobile-menu-btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-md);
}

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

.mobile-days {
    display: none;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    animation: slideDown 0.3s ease-out;
}

.day-tab {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    flex: 1;
    min-width: 140px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.day-tab.active {
    background: var(--primary-gradient);
    color: white;
    font-weight: 600;
    border-color: transparent;
    box-shadow: var(--shadow-lg);
}

.day-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.day-count {
    font-size: 0.9rem;
    opacity: 0.9;
}

.main-content {
    display: flex;
    gap: 32px;
    flex: 1;
    margin-bottom: 48px;
    position: relative;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    padding: 28px;
    box-shadow: var(--glass-shadow);
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
    position: sticky;
    top: 32px;
    height: fit-content;
    overflow: hidden;
}

.sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-gradient);
    opacity: 0.05;
    z-index: -1;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-title {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.close-sidebar {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.4rem;
    cursor: pointer;
    display: none;
    transition: var(--transition-smooth);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-sidebar:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    transform: rotate(90deg);
}

.sidebar-section-selector {
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--glass-border);
}

.section-selector-title {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    font-weight: 600;
}

.section-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.section-btn {
    background: var(--glass-bg);
    border: 2px solid transparent;
    border-radius: var(--border-radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition-bounce);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: relative;
    overflow: hidden;
}

.section-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.section-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--glass-border);
}

.section-btn:hover::before {
    opacity: 0.1;
}

.section-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.section-btn.active::before {
    opacity: 1;
}

.section-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.section-room {
    font-size: 0.9rem;
    opacity: 0.9;
}

.days-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.day-item {
    background: transparent;
    border: 1px solid var(--glass-border);
    padding: 20px 24px;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    text-align: right;
    cursor: pointer;
    transition: var(--transition-bounce);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.day-item::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.1;
    transition: width 0.3s ease;
    z-index: -1;
}

.day-item:hover {
    transform: translateX(-8px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.day-item:hover::before {
    width: 100%;
}

.day-item.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-lg);
    transform: translateX(-4px);
}

.day-item.active::before {
    opacity: 1;
}

.day-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.day-lectures {
    font-size: 0.95rem;
    opacity: 0.9;
}

.day-item i {
    transition: transform 0.3s ease;
}

.day-item:hover i {
    transform: translateX(-4px);
}

.sidebar-stats {
    background: var(--glass-bg);
    border-radius: var(--border-radius-md);
    padding: 20px;
    margin-top: auto;
    margin-bottom: 28px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 0;
}

.stat-item:not(:last-child) {
    border-bottom: 1px solid var(--glass-border);
}

.stat-item i {
    font-size: 1.8rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    width: 48px;
    text-align: center;
}

.stat-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.sidebar-footer {
    margin-top: auto;
}

.current-time {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 1.3rem;
    padding: 16px;
    background: var(--glass-bg);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-weight: 700;
    border: 1px solid var(--glass-border);
    margin-bottom: 12px;
}

.current-time i {
    color: var(--saturday-color);
}

.last-update {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
}

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

.day-header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    padding: 32px 40px;
    margin-bottom: 32px;
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
}

.day-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-gradient);
    opacity: 0.05;
    z-index: -1;
}

.day-title {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 8px;
}

.day-info {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.lectures-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 24px;
    flex: 1;
}

.lecture-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    padding: 32px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.lecture-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.lecture-card:hover {
    transform: translateY(-12px) rotateX(5deg);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.lecture-card:hover::before {
    opacity: 0.1;
}

.lecture-card:active {
    transform: translateY(-6px) scale(0.98);
}

.lecture-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 5px;
    height: 100%;
    transition: var(--transition-smooth);
}

.lecture-card.saturday::after {
    background: var(--saturday-color);
}

.lecture-card.sunday::after {
    background: var(--sunday-color);
}

.lecture-card.monday::after {
    background: var(--monday-color);
}

.lecture-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
}

.lecture-time {
    background: var(--primary-gradient);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: var(--shadow-sm);
}

.lecture-day {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 8px 16px;
    background: var(--glass-bg);
    border-radius: 50px;
    border: 1px solid var(--glass-border);
}

.lecture-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    line-height: 1.3;
    min-height: 72px;
}

.lecture-subject {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 600;
}

.lecture-teacher {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 1rem;
}

.lecture-teacher i {
    font-size: 1.2rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.lecture-department {
    display: inline-block;
    padding: 10px 20px;
    background: var(--glass-bg);
    color: var(--text-primary);
    border-radius: 50px;
    font-size: 0.95rem;
    border: 1px solid var(--glass-border);
    font-weight: 500;
}

.no-lectures {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    min-height: 400px;
}

.empty-state {
    text-align: center;
    padding: 48px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    max-width: 500px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.empty-state::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-gradient);
    opacity: 0.05;
    z-index: -1;
}

.empty-state i {
    font-size: 4.5rem;
    margin-bottom: 24px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    opacity: 0.8;
}

.empty-state h3 {
    font-size: 2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 700;
}

.empty-state p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.additional-info {
    margin-top: 32px;
}

.info-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    padding: 28px 32px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    opacity: 0.05;
    z-index: -1;
}

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

.info-card i {
    font-size: 2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-top: 4px;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 1.4rem;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 700;
}

.info-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1.05rem;
}

.footer {
    margin-top: auto;
    padding: 32px 0 24px;
    border-top: 1px solid var(--glass-border);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0.02;
    z-index: -1;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    text-align: center;
}

.developer-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.developer-name {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 600;
}

.developer-name i {
    font-size: 1.4rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.developer-social {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-top: 8px;
}

.developer-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-bounce);
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    position: relative;
    overflow: hidden;
}

.developer-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.developer-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.developer-link:hover::before {
    opacity: 0.1;
}

.developer-link.website:hover {
    color: var(--saturday-color);
}

.developer-link.instagram:hover {
    color: #E4405F;
}

.developer-link.telegram:hover {
    color: #26A5E4;
}

.developer-link i {
    font-size: 1.3rem;
}

.social-text {
    display: inline;
}

.footer-note {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 800px;
    line-height: 1.5;
}

.footer-note p {
    padding: 12px 24px;
    background: var(--glass-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--glass-border);
}

.sidebar-toggle {
    position: fixed;
    bottom: 40px;
    left: 40px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    font-size: 1.6rem;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: var(--transition-bounce);
}

.sidebar-toggle:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-xl);
}

.settings-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 20px;
}

.settings-modal.active {
    display: flex;
    opacity: 1;
    animation: fadeIn 0.3s ease;
}

.settings-content {
    background: var(--glass-bg);
    backdrop-filter: blur(30px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--glass-shadow);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.settings-modal.active .settings-content {
    transform: translateY(0);
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 32px;
    border-bottom: 1px solid var(--glass-border);
}

.settings-header h3 {
    font-size: 1.8rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin: 0;
    font-weight: 700;
}

.close-settings {
    background: transparent;
    border: none;
    font-size: 1.4rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-settings:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    transform: rotate(90deg);
}

.settings-body {
    padding: 32px;
}

.settings-footer {
    display: flex;
    gap: 16px;
    padding: 24px 32px;
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
}

.btn {
    padding: 14px 24px;
    border-radius: var(--border-radius-md);
    border: none;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-bounce);
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
}

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

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-in-delayed {
    animation: fadeIn 0.8s ease 0.3s forwards;
    opacity: 0;
}

.lecture-card {
    animation: fadeIn 0.6s ease forwards;
    opacity: 0;
}

.lecture-card:nth-child(1) { animation-delay: 0.1s; }
.lecture-card:nth-child(2) { animation-delay: 0.2s; }
.lecture-card:nth-child(3) { animation-delay: 0.3s; }
.lecture-card:nth-child(4) { animation-delay: 0.4s; }
.lecture-card:nth-child(5) { animation-delay: 0.5s; }
.lecture-card:nth-child(6) { animation-delay: 0.6s; }
.lecture-card:nth-child(7) { animation-delay: 0.7s; }
.lecture-card:nth-child(8) { animation-delay: 0.8s; }

.floating {
    animation: float 6s ease-in-out infinite;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(102, 126, 234, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0);
    }
}

@media (max-width: 1200px) {
    .lectures-container {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    }
    
    .sidebar {
        width: 280px;
    }
}

@media (max-width: 992px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        right: -100%;
        width: 380px;
        height: 100vh;
        z-index: 1000;
        border-radius: 0;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: var(--shadow-xl);
        padding-top: 80px;
    }
    
    .sidebar.active {
        right: 0;
    }
    
    .close-sidebar {
        display: flex;
        position: absolute;
        top: 20px;
        right: 20px;
    }
    
    .sidebar-toggle {
        display: flex;
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .lectures-container {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
    
    .main-title {
        font-size: 2.4rem;
    }
    
    .day-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .header {
        margin: 16px 16px 24px;
        padding: 20px 24px;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .controls {
        gap: 12px;
    }
    
    .toggle-btn {
        padding: 10px 16px;
        font-size: 0.95rem;
    }
    
    .lectures-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .lecture-card {
        padding: 24px;
    }
    
    .lecture-title {
        font-size: 1.6rem;
        min-height: auto;
    }
    
    .section-buttons {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .day-info {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .day-title {
        font-size: 1.8rem;
    }
    
    .header {
        padding: 16px 20px;
    }
    
    .lecture-card {
        padding: 20px;
    }
    
    .social-text {
        display: none;
    }
    
    .developer-link {
        padding: 12px;
        border-radius: 50%;
        width: 48px;
        height: 48px;
        justify-content: center;
    }
    
    .developer-link.website {
        width: auto;
        border-radius: var(--border-radius-md);
        padding: 12px 16px;
    }
    
    .developer-link.website .social-text {
        display: inline;
    }
    
    .sidebar-toggle {
        bottom: 20px;
        left: 20px;
        width: 56px;
        height: 56px;
    }
    
    .settings-content {
        margin: 10px;
    }
    
    .settings-header {
        padding: 20px 24px;
    }
    
    .settings-body {
        padding: 24px;
    }
    
    .settings-footer {
        padding: 20px 24px;
    }
}

body[dir="ltr"] .day-item,
body[dir="ltr"] .lecture-teacher,
body[dir="ltr"] .lecture-header,
body[dir="ltr"] .sidebar-header,
body[dir="ltr"] .day-info,
body[dir="ltr"] .stat-item,
body[dir="ltr"] .info-card {
    text-align: left;
}

body[dir="ltr"] .day-item:hover {
    transform: translateX(8px);
}

body[dir="ltr"] .day-item:hover i {
    transform: translateX(4px);
}

body[dir="ltr"] .sidebar-toggle {
    left: auto;
    right: 40px;
}

body[dir="ltr"] .sidebar {
    left: -100%;
    right: auto;
}

body[dir="ltr"] .sidebar.active {
    left: 0;
    right: auto;
}

body[dir="ltr"] .lecture-card::after {
    right: auto;
    left: 0;
}

body[dir="ltr"] .day-item i {
    transform: rotate(180deg);
}

body[dir="ltr"] .day-item:hover i {
    transform: rotate(180deg) translateX(-4px);
}

.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--glass-bg);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gradient);
}


.lecture-card.highlight {
    animation: pulse 2s infinite;
    border: 2px solid var(--saturday-color);
}


.time-indicator {
    position: relative;
}

.time-indicator::after {
    content: 'قريباً';
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-gradient);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    animation: pulse 2s infinite;
}


*:focus {
    outline: 2px solid var(--saturday-color);
    outline-offset: 2px;
}


@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}