:root {
    /* Enhanced DeepSeek-inspired Color Scheme */
    --primary-dark: #0f172a;
    --secondary-dark: #1e293b;
    --header-bg: #1a365d;
    --accent-blue: #3b82f6;
    --accent-teal: #06b6d4;
    --sidenav-bg: #1e293b;
    --gradient-start: #1e293b;
    --gradient-end: #334155;
    --text-light: #f8fafc;
    --text-muted: #cbd5e1;
    --text-dark: #0f172a;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    
    /* Shadows */
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-heavy: 0 8px 16px rgba(0, 0, 0, 0.3);
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
    
    /* Z-index layers */
    --z-sidenav: 100;
    --z-scroll-btn: 1000;
    --z-header: 10;
}

/* Reset and base styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Roboto', sans-serif;
    margin: 0;
    background-color: var(--primary-dark);
    overflow-x: hidden;
    line-height: 1.6;
    color: var(--text-light);
}

/* Accessibility */
*:focus-visible {
    outline: 2px solid var(--accent-teal);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --accent-blue: #2563eb;
        --accent-teal: #0891b2;
        --header-bg: #1e3a8a;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .sidenav,
    .movie-card,
    .overview {
        transition: none;
    }
}

/* Screen reader only text */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Header & Footer */
header, footer {
    background: linear-gradient(135deg, var(--header-bg) 0%, #2d3748 100%);
    color: var(--text-light);
    padding: var(--spacing-sm);
    text-align: center;
    box-shadow: var(--shadow-light);
    width: 100%;
    box-sizing: border-box;
    position: relative;
    z-index: var(--z-header);
}

footer {
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    background: linear-gradient(135deg, #1e293b 0%, var(--header-bg) 100%);
}

header h1 {
    margin: 0;
    font-weight: 700;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header p {
    margin: var(--spacing-xs) 0 0;
    opacity: 0.9;
    color: var(--text-muted);
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
}

/* Main content */
main {
    transition: margin-left var(--transition-normal);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    box-shadow: var(--shadow-light);
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: calc(100vh - 120px);
}

/* Side Navigation */
.sidenav {
    height: 100%;
    min-height: 100vh;
    width: 0;
    position: fixed;
    z-index: var(--z-sidenav);
    top: 0;
    left: 0;
    background: linear-gradient(180deg, var(--sidenav-bg) 0%, #0f172a 100%);
    overflow-x: hidden;
    transition: width var(--transition-normal);
    padding-top: 60px;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.4);
}

.sidenav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-teal));
}

.sidenav ul {
    list-style: none;
    padding: 0 0 var(--spacing-sm) 0;
    margin: 0;
    display: block;
}

.sidenav ul li {
    margin: 0.25rem 0;
}

.sidenav ul li a {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.5rem 1rem; 
    margin: 0.25rem var(--spacing-xs);
    display: block;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
}

.sidenav ul li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: height var(--transition-fast);
}

.sidenav ul li a:hover::before,
.sidenav ul li a:focus::before {
    height: 60%;
}

.sidenav ul li:last-child {
    margin-bottom: 5rem;
}

.sidenav ul li a:hover,
.sidenav ul li a:focus {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    outline: none;
}

.sidenav .closebtn {
    position: absolute;
    top: 10px;
    right: 25px;
    font-size: 36px;
    color: var(--text-light);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
}

.sidenav .closebtn:focus {
    outline: 2px solid var(--text-light);
}

/* Navigation Button */
.openbtn {
    font-size: 1.25rem;
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
    color: white;
    padding: 10px 15px;
    border: none;
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 1;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.openbtn:hover,
.openbtn:focus {
    background: linear-gradient(135deg, #2563eb, #0891b2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    outline: none;
}

/* Movie Sections */
.movie-section {
    margin-bottom: var(--spacing-xl);
    width: 100%;
    max-width: 1400px;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.movie-section:hover {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

/* Section Header - Now directly inside movie-section */
.section-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid rgba(59, 130, 246, 0.3);
}

.section-header h2 {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0;
    padding-bottom: var(--spacing-xs);
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.section-header p {
    margin: var(--spacing-xs) 0 var(--spacing-md);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text-muted);
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* Section Stats */
.section-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.movie-count {
    background: rgba(59, 130, 246, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--accent-blue);
    border: 1px solid rgba(59, 130, 246, 0.3);
    font-size: 0.9rem;
}

/* Movie Grid */
.movie-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 180px));
    justify-content: center;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    contain: layout style paint;
}

/* Movie Cards */
.movie-card {
    min-height: 320px;
    display: flex;
    flex-direction: column;
    background: linear-gradient(145deg, var(--secondary-dark), #1a2435);
    border-radius: var(--radius-md);
    overflow: hidden;
    text-align: center;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-normal);
    position: relative;
    contain: layout style paint;
    will-change: transform;
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
}

.movie-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-teal));
    transform: scaleX(0);
    transition: transform var(--transition-fast);
    z-index: 1;
}

.movie-card:hover::before,
.movie-card:focus-within::before,
.movie-card.active::before {
    transform: scaleX(1);
}

.movie-card:hover,
.movie-card:focus-within,
.movie-card.active {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-heavy);
    z-index: 2;
}

.movie-card:active {
    transform: translateY(-2px) scale(1.01);
}

.movie-card img {
    width: 100%;
    height: auto;
    display: block;
    border-bottom: 1px solid #334155;
    object-fit: cover;
    aspect-ratio: 2/3;
    background: linear-gradient(45deg, #1a2435 25%, #1e293b 50%, #1a2435 75%);
    background-size: 200% 200%;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    transition: transform var(--transition-normal);
}

.movie-card:hover img,
.movie-card.active img {
    transform: scale(1.05);
}

/* Movie Title */
.movie-title {
    padding: var(--spacing-sm);
    background-color: var(--secondary-dark);
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70px;
}

.movie-title h3 {
    margin: 0;
    color: var(--text-light);
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.3;
}

/* Movie Figure */
.movie-card figure {
    margin: 0;
    position: relative;
    overflow: hidden;
}

/* Rating Badge */
.rating-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.85rem;
    z-index: 3;
    border: 2px solid rgba(255, 255, 255, 0.9);
    box-shadow: 
        0 4px 12px rgba(0, 0, 0, 0.6),
        0 0 0 2px rgba(0, 0, 0, 0.8);
    font-weight: 800;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: all var(--transition-fast);
}

.movie-card:hover .rating-badge,
.movie-card.active .rating-badge {
    transform: scale(1.1);
    box-shadow: 
        0 6px 16px rgba(0, 0, 0, 0.8),
        0 0 0 2px rgba(0, 0, 0, 0.9);
}

/* Movie Overview */
.overview {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.98), rgba(241, 245, 249, 0.98));
    color: var(--text-dark);
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    height: 100%;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    box-sizing: border-box;
    padding: var(--spacing-sm);
    will-change: transform;
    overflow-y: auto;
    backdrop-filter: blur(10px);
    z-index: 4;
    border-radius: var(--radius-md);
}

.overview h4 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--header-bg);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    width: 100%;
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--accent-blue);
}

.overview p {
    margin: 0;
    padding: 0;
    color: var(--text-dark);
    text-align: left;
    font-size: 0.9rem;
    line-height: 1.5;
}

.movie-card:hover .overview,
.movie-card:focus-within .overview,
.movie-card.active .overview {
    transform: translateY(0);
}

/* Scroll to Top Button */
#scrollToTopBtn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: var(--z-scroll-btn);
    border: none;
    outline: none;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
    color: white;
    cursor: pointer;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    transition: all var(--transition-fast);
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
}

#scrollToTopBtn.visible {
    opacity: 1;
    visibility: visible;
    display: flex;
}

#scrollToTopBtn::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-teal), var(--accent-blue));
    border-radius: var(--radius-full);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

#scrollToTopBtn:hover::before {
    opacity: 1;
}

#scrollToTopBtn:hover,
#scrollToTopBtn:focus {
    background: linear-gradient(135deg, #2563eb, #0891b2);
    box-shadow: 0 6px 15px rgba(37, 99, 235, 0.4);
    transform: translateY(-2px);
    outline: none;
}

#scrollToTopBtn svg {
    width: 24px;
    height: 24px;
}

/* Enhanced Rating Color System - Red to Green Theme */
.rating-1, .rating-badge.rating-1 {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #ffffff;
}

.rating-2, .rating-badge.rating-2 {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #ffffff;
}

.rating-3, .rating-badge.rating-3 {
    background: linear-gradient(135deg, #f87171, #ef4444);
    color: #ffffff;
}

.rating-4, .rating-badge.rating-4 {
    background: linear-gradient(135deg, #fb923c, #f97316);
    color: #ffffff;
}

.rating-5, .rating-badge.rating-5 {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #000000;
}

.rating-6, .rating-badge.rating-6 {
    background: linear-gradient(135deg, #eab308, #ca8a04);
    color: #000000;
}

.rating-7, .rating-badge.rating-7 {
    background: linear-gradient(135deg, #a3e635, #84cc16);
    color: #000000;
}

.rating-8, .rating-badge.rating-8 {
    background: linear-gradient(135deg, #4ade80, #22c55e);
    color: #000000;
}

.rating-9, .rating-badge.rating-9 {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #000000;
}

.rating-10, .rating-badge.rating-10 {
    background: linear-gradient(135deg, #16a34a, #15803d);
    color: #ffffff;
}

/* Utility Classes */
.text-truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.p-1 { padding: var(--spacing-xs); }

.hidden-mobile {
    display: block;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 160px));
        gap: var(--spacing-sm);
    }

    .movie-section {
        padding: var(--spacing-md);
        max-width: 100%;
    }
}

@media (max-width: 1024px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 150px));
    }

    .movie-card {
        min-height: 280px;
    }

    .section-stats {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: clamp(1.5rem, 4vw, 2rem);
    }

    header p {
        font-size: clamp(0.9rem, 2.5vw, 1rem);
    }

    main {
        padding: var(--spacing-sm);
    }

    .movie-section {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }

    .movie-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 140px));
        gap: var(--spacing-sm);
    }

    .movie-card {
        min-height: 250px;
    }

    .movie-title h3 {
        font-size: 0.85rem;
    }

    .overview h4 {
        font-size: 1rem;
    }

    .overview p {
        font-size: 0.8rem;
    }

    .openbtn {
        top: 10px;
        left: 10px;
        padding: 8px 12px;
        font-size: 1rem;
    }

    .sidenav {
        padding-top: 50px;
    }

    .sidenav .closebtn {
        font-size: 30px;
        right: 15px;
    }
    
    .hidden-mobile {
        display: none;
    }

    .section-header h2 {
        font-size: clamp(1.4rem, 3.5vw, 1.8rem);
    }

    .section-header p {
        font-size: clamp(0.9rem, 2.2vw, 1rem);
    }

    .section-stats {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .sidenav ul li a {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .sidenav {
        padding-top: 40px;
    }

    .rating-badge {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
        top: 8px;
        right: 8px;
    }
}

@media (max-width: 480px) {
    header {
        padding: var(--spacing-sm) var(--spacing-xs);
    }

    header h1 {
        font-size: clamp(1.2rem, 3.5vw, 1.8rem);
    }

    header p {
        font-size: clamp(0.8rem, 2vw, 0.9rem);
    }

    .movie-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 120px));
        gap: 0.75rem;
    }

    .movie-card {
        min-height: 220px;
    }

    .movie-card img {
        aspect-ratio: 3/4;
    }

    .movie-title h3 {
        font-size: 0.8rem;
    }

    .section-header h2 {
        font-size: clamp(1.2rem, 3vw, 1.5rem);
    }

    #scrollToTopBtn {
        width: 40px;
        height: 40px;
        bottom: 15px;
        right: 15px;
    }

    #scrollToTopBtn svg {
        width: 20px;
        height: 20px;
    }
    
    .rating-badge {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
        top: 6px;
        right: 6px;
    }

    .overview {
        padding: var(--spacing-xs);
    }

    .overview h4 {
        font-size: 0.9rem;
        margin-bottom: var(--spacing-xs);
    }

    .overview p {
        font-size: 0.75rem;
    }
}

/* Extra small devices */
@media (max-width: 360px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 100px));
        gap: var(--spacing-xs);
    }
    
    .movie-card {
        min-height: 200px;
    }
    
    .movie-section {
        padding: var(--spacing-sm);
    }

    .movie-title h3 {
        font-size: 0.75rem;
    }

    .section-header {
        margin-bottom: var(--spacing-md);
    }
}

/* Large screens */
@media (min-width: 1440px) {
    .movie-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 200px));
        gap: var(--spacing-lg);
    }
    
    .movie-card {
        min-height: 350px;
    }

    .movie-title h3 {
        font-size: 1rem;
    }

    .overview p {
        font-size: 0.95rem;
    }

    .movie-section {
        max-width: 1600px;
    }
}

/* Touch device optimizations - COMPLETELY REWORKED */
@media (hover: none) and (pointer: coarse) {
    .movie-card {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
    
    .movie-card:hover {
        transform: none;
    }
    
    .movie-card::before {
        display: none;
    }
    
    /* Fixed overview for touch devices */
    .overview {
        position: absolute;
        transform: translateY(100%);
        background: linear-gradient(135deg, rgba(248, 250, 252, 0.98), rgba(241, 245, 249, 0.98));
        height: 100%;
        overflow-y: auto;
        z-index: 4;
        border-radius: var(--radius-md);
        top: 0;
        left: 0;
        right: 0;
        bottom: auto;
        transition: transform var(--transition-normal);
    }
    
    /* Show overview when card has active class */
    .movie-card.active .overview {
        transform: translateY(0);
    }
    
    .sidenav ul li a:hover {
        background-color: transparent;
    }
    
    .sidenav ul li a:hover::before {
        height: 0;
    }

    .movie-card:hover img {
        transform: none;
    }

    .movie-card:hover .rating-badge {
        transform: none;
    }
}

/* Mobile overview fix - SIMPLIFIED approach */
@media (max-width: 768px) {
    .movie-card {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
    
    .overview {
        transform: translateY(100%);
        transition: transform var(--transition-normal);
    }
    
    .movie-card.active .overview {
        transform: translateY(0);
    }
}

/* Loading animation for images */
@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.movie-card img[data-src] {
    background: linear-gradient(45deg, #1a2435 25%, #1e293b 50%, #1a2435 75%);
    background-size: 200% 200%;
    animation: loading 2s infinite;
}

/* Enhanced focus styles for semantic elements */
article:focus-within {
    outline: 2px solid var(--accent-teal);
    outline-offset: 2px;
    border-radius: var(--radius-md);
}

section:focus-within {
    outline: 2px dashed var(--accent-teal);
    outline-offset: 4px;
    border-radius: var(--radius-md);
}

/* Print styles */
@media print {
    .sidenav,
    .openbtn,
    #scrollToTopBtn {
        display: none;
    }
    
    .movie-card .overview {
        position: static;
        transform: none;
        background: white;
        color: black;
    }
    
    .movie-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .movie-section {
        box-shadow: none;
        background: white;
        border: 1px solid #ccc;
    }
}