/* CSS Variables for Theme Support */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #808080;
    --border-color: #404040;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --card-hover-shadow: 0 8px 15px rgba(0, 0, 0, 0.4);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --card-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --card-hover-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

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;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    margin-bottom: 1rem;
}

.text-light {
    color: var(--text-primary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

/* Layout */
.container-fluid {
    padding: 0;
}

/* Banner Container */
.banner-container {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 0;
    text-align: center;
}

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

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary) !important;
    text-decoration: none;
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover {
    color: var(--text-primary) !important;
    background-color: var(--bg-tertiary);
    transform: translateY(-1px);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.1);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.02"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.search-container {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    box-shadow: var(--card-shadow);
}

/* Movie Cards */
.movie-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.movie-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--card-hover-shadow);
    border-color: var(--accent-color);
}

.movie-poster {
    position: relative;
    overflow: hidden;
    aspect-ratio: 2/3;
    background: var(--bg-tertiary);
}

.movie-poster img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

.movie-poster img.loaded {
    opacity: 1;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(1.1); }
    to { opacity: 1; transform: scale(1); }
}

.movie-card:hover .movie-poster img {
    transform: scale(1.1);
}

.no-poster {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-size: 3rem;
}

.movie-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    gap: 0.5rem;
    padding: 1rem;
}

.movie-card:hover .movie-overlay {
    opacity: 1;
}

.movie-info {
    padding: 1rem;
    background: var(--bg-secondary);
}

.movie-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.movie-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.movie-meta span {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

/* Section Titles */
.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
    border-radius: 2px;
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4);
}

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

.btn-outline-light:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-color);
}

/* Forms */
.form-control, .form-select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    background: var(--bg-secondary);
    border-color: var(--accent-color);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* Pagination */
.pagination {
    gap: 0.25rem;
}

.page-link {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--accent-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Animations */
.animate-in {
    animation: slideInUp 0.6s ease forwards;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Low Bandwidth Optimizations */
.low-bandwidth .movie-poster img {
    filter: blur(1px);
    transform: scale(1.05);
}

.low-bandwidth .movie-card:hover {
    transform: none;
    box-shadow: var(--card-shadow);
}

.low-bandwidth .animate-in {
    animation: none;
    opacity: 1;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .search-container {
        padding: 1rem !important;
    }
    
    .search-container .row {
        gap: 1rem;
    }
    
    .search-container .col-md-2,
    .search-container .col-md-4 {
        width: 100%;
    }
    
    .movie-card {
        margin-bottom: 1rem;
    }
    
    .movie-title {
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .movie-overlay {
        padding: 0.5rem;
    }
    
    .movie-overlay .btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    .banner-container {
        padding: 0.25rem 0;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .hero-section h1 {
        font-size: 1.75rem;
    }
    
    .movie-card {
        margin-bottom: 0.75rem;
    }
    
    .movie-info {
        padding: 0.75rem;
    }
    
    .movie-title {
        font-size: 0.75rem;
    }
    
    .movie-meta span {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }
}

/* Tablet Optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
    .movie-card {
        margin-bottom: 1.5rem;
    }
    
    .hero-section {
        padding: 3rem 0;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .movie-poster img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

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

/* Print Styles */
@media print {
    .navbar,
    .movie-overlay,
    .search-container,
    .banner-container {
        display: none !important;
    }
    
    .movie-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Accessibility */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
    
    [data-theme="light"] {
        --border-color: #000000;
        --text-secondary: #000000;
    }
}

/* Focus Styles */
.btn:focus,
.form-control:focus,
.form-select:focus,
.page-link:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1001;
}

.skip-link:focus {
    top: 6px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}