/* Root Variables */
:root {
    /* Dark Theme */
    --bg-primary: #0a0b0f;
    --bg-secondary: #13141a;
    --bg-card: #1a1b23;
    --bg-hover: rgba(131, 118, 252, 0.1);

    --text-primary: #ffffff;
    --text-secondary: #a1a5b7;
    --text-muted: #6b7280;

    --primary: #8376fc;
    --primary-hover: #9d8dfc;
    --secondary: #3a6ef2;
    --accent: #47cc88;
    --warning: #f59e0b;
    --error: #ef4444;
    --success: #10b981;

    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(131, 118, 252, 0.2);

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-hover: rgba(131, 118, 252, 0.1);

    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;

    --border-primary: rgba(0, 0, 0, 0.1);
    --border-secondary: rgba(131, 118, 252, 0.2);

    --shadow-sm: 0 1px 2px 0 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-feature-settings: 'cv11', 'ss01';
    font-variation-settings: 'opsz' 32;
    transition: var(--transition);
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Main App Layout */
.main-app {
    display: none;
    min-height: 100vh;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(10, 11, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 1000;
    transition: var(--transition);
}

[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.8);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    color: var(--primary);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo i {
    color: var(--primary);
    font-size: 24px;
}

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

/* Search */
.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 32px;
}

.search-container {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.search-container i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.search-input {
    width: 100%;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    padding: 0 48px 0 48px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(131, 118, 252, 0.1);
}

.search-input::placeholder {
    color: var(--text-muted);
}

/* Nav Right */
.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle,
.notification-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.theme-toggle:hover,
.notification-btn:hover {
    background: var(--bg-hover);
    color: var(--primary);
}

.notification-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 16px;
    height: 16px;
    background: var(--error);
    color: white;
    border-radius: 50%;
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px 4px 4px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.user-profile:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 72px;
    left: 0;
    width: 280px;
    height: calc(100vh - 72px);
    background: var(--bg-card);
    border-right: 1px solid var(--border-primary);
    z-index: 900;
    transform: translateX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed {
    transform: translateX(-224px);
    width: 56px;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-primary);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-logo i {
    color: var(--primary);
    font-size: 20px;
}

.sidebar.collapsed .sidebar-logo span {
    display: none;
}

.sidebar-content {
    flex: 1;
    padding: 16px 0;
}

.sidebar-section {
    margin-bottom: 32px;
}

.sidebar-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    padding: 0 24px;
}

.sidebar.collapsed .sidebar-section-title {
    display: none;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-item {
    margin-bottom: 4px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.sidebar-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.sidebar-item.active .sidebar-link {
    background: var(--bg-hover);
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

.sidebar-link i {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.sidebar.collapsed .sidebar-link span {
    display: none;
}

.sidebar-badge {
    background: var(--primary);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: auto;
}

.sidebar.collapsed .sidebar-badge {
    display: none;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    margin-top: 72px;
    min-height: calc(100vh - 72px);
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content.sidebar-collapsed {
    margin-left: 0px;
}

/* Pages */
.page {
    display: none;
    min-height: calc(100vh - 72px);
}

.page.active {
    display: block;
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Hero Section */
.hero {
    position: relative;
    padding: 80px 0 120px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.hero-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 60%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(131, 118, 252, 0.1);
    border: 1px solid rgba(131, 118, 252, 0.2);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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


.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Features Section */
.features {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.feature-card:hover::before {
    transform: translateX(100%);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    margin: 0 auto 24px;
    color: white;
    font-size: 24px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(131, 118, 252, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

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

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* Tabs */
.grade-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    background: var(--bg-card);
    padding: 8px;
    border-radius: 12px;
    border: 1px solid var(--border-primary);
    max-width: max-content;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

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

.tab-btn:hover:not(.active) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Grade Cards */
.grade-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.grade-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

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

.grade-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.grade-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    color: white;
    font-size: 20px;
}

.grade-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.grade-count {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-hover);
    padding: 4px 8px;
    border-radius: 12px;
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.subject-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-hover);
    border-radius: 8px;
    font-size: 14px;
    transition: var(--transition-fast);
}

.subject-item:hover {
    background: rgba(131, 118, 252, 0.2);
}

.subject-item i {
    color: var(--primary);
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.subject-item span:first-of-type {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
}

.subject-count {
    background: var(--primary);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 8px;
}

.grade-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.grade-actions .btn {
    flex: 1;
    justify-content: center;
}

/* Volume Sections */
.volume-section {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-primary);
}

.volume-section:first-of-type {
    border-top: none;
    margin-top: 16px;
}

.volume-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.volume-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

/* Books List */
.books-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.book-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
}

.book-item:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.book-item i:first-child {
    color: var(--error);
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.book-item i:last-child {
    color: var(--text-muted);
    font-size: 12px;
    margin-left: auto;
    opacity: 0.7;
    transition: var(--transition-fast);
}

.book-item:hover i:last-child {
    opacity: 1;
    color: var(--primary);
}

/* Stats Section */
.stats-section {
    padding: 80px 0;
    background: var(--bg-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

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

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    color: white;
    font-size: 24px;
}

.stat-info {
    flex: 1;
}

.stat-card .stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
}

.stat-card .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-state i {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.empty-state h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Page Headers */
.page-header {
    padding: 40px 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--border-primary);
    margin-bottom: 40px;
}

.page-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.page-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 800;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .main-content.sidebar-collapsed {
        margin-left: 0;
    }

    body.sidebar-open {
        overflow: hidden;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 16px;
    }

    .nav-center {
        margin: 0 16px;
        max-width: 200px;
    }

    .hero {
        padding: 60px 0 80px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        justify-content: center;
    }

    .hero-stats {
        gap: 32px;
    }

    .features {
        padding: 80px 0;
    }

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

    .grade-tabs {
        flex-direction: column;
        width: 100%;
    }

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

    .grade-actions {
        flex-direction: column;
    }

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

    .user-name {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .nav-center {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .features {
        padding: 60px 0;
    }

    .stats-section {
        padding: 60px 0;
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
}

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

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

/* Focus styles */
button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
}