@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Sora:wght@400;600;700;800&display=swap');

:root {
    color-scheme: dark light;
    /* Colors */
    --bg: #0a0a0b;
    --surface: rgba(22, 22, 24, 0.6);
    --surface-hover: rgba(28, 28, 31, 0.8);
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.4);
    --secondary: #a855f7;
    --accent: #10b981;
    --text: #f3f4f6;
    --text-muted: #9ca3af;
    --border: rgba(255, 255, 255, 0.1);
    --glass: rgba(15, 15, 18, 0.6);
    --glass-heavy: rgba(10, 10, 12, 0.8);
    
    /* Spacing & Sizing */
    --container-max: 1200px;
    --section-padding: 80px 20px;
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 32px;
    
    /* Transitions */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all var(--transition-base);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

.light-mode {
    --bg: #f8fafc;
    --surface: #ffffff;
    --surface-hover: #f1f5f9;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: rgba(15, 23, 42, 0.1);
    --glass: rgba(255, 255, 255, 0.7);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* Background System */
.bg-system {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    mask-image: radial-gradient(circle at 50% 50%, black, transparent 80%);
}

.bg-noise {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    z-index: 1;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3%3Ffilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.bg-blobs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    filter: blur(80px);
}

.blob {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    opacity: 0.2;
    animation: drift 20s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
}

.blob-1 { background: var(--primary); top: -10%; right: -5%; }
.blob-2 { background: var(--secondary); bottom: 10%; left: -5%; animation-delay: -5s; }
.blob-3 { background: var(--accent); top: 40%; left: 40%; width: 300px; height: 300px; animation-duration: 30s; animation-delay: -10s; }

@keyframes drift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 50px) scale(1.1); }
}

h1, h2, h3, h4 {
    font-family: 'Sora', sans-serif;
    line-height: 1.2;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* Glassmorphism */
.glass {
    background: var(--glass);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid var(--border);
}

.glass-heavy {
    background: var(--glass-heavy);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}

header.scrolled {
    background: var(--glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo-group {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    line-height: 1;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Sora', sans-serif;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-subtitle {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin-top: 4px;
    opacity: 0.8;
}


.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    transition: var(--transition);
    text-decoration: none;
}

.nav-link:hover, .nav-link.active {
    color: var(--text);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--surface-hover);
    color: var(--primary);
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
}

.lang-btn {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
}

.lang-btn:hover, .lang-btn.active {
    color: var(--primary);
}


/* Hero */
.hero {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-tag {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 700px;
    margin-bottom: 40px;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-family: 'Sora', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-premium {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-premium:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 25px var(--primary-glow);
}

/* Featured Section */
.section-header {
    margin-bottom: 40px;
}

.section-tag {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    margin-bottom: 8px;
    display: block;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
}

.featured-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 40px;
    border-radius: var(--radius-lg);
    align-items: center;
    margin-bottom: 80px;
}

.upload-section .featured-card {
    display: flex;
    flex-direction: column;
    text-align: center;
    padding: 60px 40px;
    gap: 24px;
}

.icon-circle {
    width: 80px;
    height: 80px;
    background: var(--primary-glow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 1px solid var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.featured-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.featured-image img {
    width: 100%;
    transition: var(--transition-smooth);
}

.featured-card:hover .featured-image img {
    transform: scale(1.05);
}

/* Library Controls */
.library-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}



/* Search & Filter */
.search-container {
    margin-bottom: 40px;
    max-width: 600px;
    width: 100%;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    padding: 5px 20px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.search-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
    transform: translateY(-2px);
}

.search-icon {
    color: var(--text-muted);
    margin-right: 15px;
    font-size: 1.1rem;
}

.search-input {
    background: none;
    border: none;
    color: var(--text);
    padding: 12px 0;
    width: 100%;
    outline: none;
    font-family: inherit;
    font-size: 1rem;
}

.filter-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
    justify-content: flex-start;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 50px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.game-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-smooth);
    position: relative;
    backdrop-filter: blur(5px);
}

.game-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-glow);
    background: var(--surface-hover);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 20px -5px var(--primary-glow);
}

.card-cover {
    position: relative;
    height: 220px;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.btn-play-small {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transform: scale(0.8);
    transition: var(--transition-smooth);
}

.game-card:hover .btn-play-small {
    transform: scale(1);
}

.card-info {
    padding: 25px;
}

.game-system {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.game-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 8px 0 12px;
}

.tag {
    font-size: 0.7rem;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    margin-right: 6px;
    color: var(--text-muted);
}

/* Emulator Overlay */
.emulator-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 2000;
    display: none;
    flex-direction: column;
}


.emulator-overlay.active {
    display: flex;
}

.emulator-header {
    height: 70px;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--glass);
    backdrop-filter: blur(10px);
}

.emulator-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 20px;
}

.emulator-container canvas {
    max-width: 100%;
    max-height: 85vh;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
    background: #000;
    border: 1px solid var(--border);
    border-radius: 8px;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.instructions-panel {
    padding: 25px;
    border-radius: var(--radius-md);
    max-width: 700px;
    width: 100%;
}

.key {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 3px 10px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
    border-bottom: 2px solid rgba(0, 0, 0, 0.3);
}

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

.reveal {
    animation: fadeIn 0.8s var(--ease-out) forwards;
}

/* Responsive */
@media (max-width: 900px) {
    .featured-card {
        grid-template-columns: 1fr;
        padding: 30px;
    }
    .hero h1 { font-size: 3rem; }
}

@media (max-width: 600px) {
    .filters { overflow-x: auto; width: 100%; padding-bottom: 10px; }
    .controls-grid { grid-template-columns: 1fr 1fr; }
}

/* Footer */
.footer {
    padding: 60px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.social-link {
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--primary);
    transform: translateY(-3px);
}