@layer base, layout, components, utilities;

@layer base {
    :root {
        /* Modern OKLCH colors for vibrant, consistent lightness */
        --bg-color: oklch(98% 0.01 220);
        --text-primary: oklch(20% 0.02 220);
        --text-secondary: oklch(45% 0.03 220);
        --accent-primary: oklch(60% 0.15 250);
        
        --glass-bg: rgba(255, 255, 255, 0.7);
        --glass-border: rgba(255, 255, 255, 0.4);
        
        --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
        --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
        --shadow-lg: 0 20px 50px -12px rgba(0,0,0,0.25);
        
        --font-main: 'Inter', system-ui, sans-serif;
        --font-serif: 'Playfair Display', serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-main);
        background-color: var(--bg-color);
        color: var(--text-primary);
        line-height: 1.6;
        overflow-x: hidden;
    }

    /* Noise Texture Overlay */
    .noise-overlay {
        position: fixed;
        inset: 0;
        z-index: 9999;
        pointer-events: none;
        opacity: 0.03;
        background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter 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");
    }
}

@layer layout {
    .glass-header {
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1000;
        background: var(--glass-bg);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--glass-border);
        padding: 1rem 2rem;
    }

    nav {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .logo {
        font-family: var(--font-serif);
        font-size: 1.5rem;
        font-weight: 700;
        font-style: italic;
        color: var(--text-primary);
    }

    .nav-links {
        display: flex;
        gap: 2rem;
    }

    .nav-links a {
        text-decoration: none;
        color: var(--text-secondary);
        font-weight: 600;
        font-size: 0.9rem;
        transition: color 0.3s ease;
    }

    .nav-links a:hover {
        color: var(--text-primary);
    }

    main {
        max-width: 1200px;
        margin: 0 auto;
        padding: 8rem 2rem 4rem;
    }

    .hero {
        text-align: center;
        margin-bottom: 6rem;
    }

    .hero-title {
        font-family: var(--font-serif);
        font-size: clamp(2.5rem, 8vw, 4.5rem);
        line-height: 1.1;
        margin-bottom: 1.5rem;
    }

    .hero-title em {
        color: var(--accent-primary);
    }

    .hero-subtitle {
        font-size: 1.25rem;
        color: var(--text-secondary);
        max-width: 600px;
        margin: 0 auto;
    }

    .game-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 3rem;
        margin-bottom: 6rem;
    }

    .glass-footer {
        padding: 4rem 2rem;
        text-align: center;
        background: var(--glass-bg);
        backdrop-filter: blur(12px);
        border-top: 1px solid var(--glass-border);
        color: var(--text-secondary);
        font-size: 0.9rem;
    }
}

@layer components {
    /* Custom Element Styling via :host in JS or global targeting */
    game-card {
        display: block;
        container-type: inline-size;
    }
}

@layer utilities {
    /* Logic for :has() - Example: highlight grid on card hover */
    .game-grid:has(game-card:hover) game-card:not(:hover) {
        opacity: 0.6;
        filter: grayscale(0.5) blur(2px);
    }
    
    game-card {
        transition: opacity 0.4s ease, filter 0.4s ease, transform 0.4s ease;
    }
    
    game-card:hover {
        transform: translateY(-8px);
    }
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Keep it simple for mobile prototype */
    }
    
    .game-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}