@layer base, components, utilities;

@layer base {
    :root {
        /* Colors */
        --primary-color: oklch(65% 0.25 260);
        --secondary-color: oklch(85% 0.15 280);
        --accent-color: oklch(75% 0.3 300);
        --text-color: oklch(20% 0.01 250);
        --bg-color: oklch(98% 0.01 250);
        --card-bg: oklch(100% 0 0);
        --border-color: oklch(85% 0.01 250);

        /* Typography */
        --font-family-base: 'system-ui', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        --font-family-heading: 'Georgia', serif;

        /* Effects */
        --shadow-color: 220 3% 5%;
        --shadow-strength: .025;
        --shadow-1: 0 3px 5px -2px hsl(var(--shadow-color) / calc(var(--shadow-strength) + 3%));
        --shadow-2: 0 7px 14px -4px hsl(var(--shadow-color) / calc(var(--shadow-strength) + 5%));
        --shadow-3: 0 15px 25px -5px hsl(var(--shadow-color) / calc(var(--shadow-strength) + 7%));

        /* Texture */
        --noise-texture: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.7" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.05"/></svg>');
    }

    :root[data-theme="dark"] {
        --primary-color: oklch(70% 0.2 270);
        --secondary-color: oklch(45% 0.08 270);
        --accent-color: oklch(75% 0.2 20);
        --text-color: oklch(92% 0.01 250);
        --bg-color: oklch(18% 0.02 260);
        --card-bg: oklch(24% 0.02 260);
        --border-color: oklch(40% 0.02 260);
        --shadow-color: 220 10% 2%;
        --shadow-strength: .06;
        --noise-texture: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.08"/></svg>');
    }

    @media (prefers-color-scheme: dark) {
        :root:not([data-theme]) {
            --primary-color: oklch(70% 0.2 270);
            --secondary-color: oklch(45% 0.08 270);
            --accent-color: oklch(75% 0.2 20);
            --text-color: oklch(92% 0.01 250);
            --bg-color: oklch(18% 0.02 260);
            --card-bg: oklch(24% 0.02 260);
            --border-color: oklch(40% 0.02 260);
            --shadow-color: 220 10% 2%;
            --shadow-strength: .06;
            --noise-texture: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.08"/></svg>');
        }
    }

    body {
        font-family: var(--font-family-base);
        background-color: var(--bg-color);
        color: var(--text-color);
        margin: 0;
        padding: 1rem;
        display: grid;
        place-content: center;
        min-height: 100vh;
        background-image: var(--noise-texture);
    }

    h1, h2, h3, h4, h5, h6 {
        font-family: var(--font-family-heading);
        color: var(--primary-color);
    }

    header, footer {
        text-align: center;
    }

    header {
        display: grid;
        gap: 0.75rem;
        justify-items: center;
        margin-block-end: 1rem;
    }
}

@layer components {
    /* Button Styles */
    button {
        background: var(--primary-color);
        color: var(--bg-color);
        border: none;
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
        border-radius: 0.5rem;
        cursor: pointer;
        box-shadow: var(--shadow-1);
        transition: all 0.2s ease;
    }
    button:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-2);
        background: var(--accent-color);
    }

    /* Card Styles */
    .card {
        background: var(--card-bg);
        padding: 2rem;
        border-radius: 1rem;
        box-shadow: var(--shadow-3);
        margin-block: 2rem;
        max-width: 600px;
    }

    /* Image Styles */
    .piece-image {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 0.5rem;
        margin-right: 1rem;
    }

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

    .fade-in {
        animation: fadeIn 0.5s ease-in-out forwards;
    }

    .theme-toggle {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.5rem 0.9rem;
        border-radius: 999px;
        background: var(--card-bg);
        color: var(--text-color);
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-1);
        font-size: 0.9rem;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }

    .theme-toggle:hover {
        transform: translateY(-1px);
        box-shadow: var(--shadow-2);
        border-color: var(--accent-color);
    }

    .theme-toggle__value {
        font-weight: 700;
        color: var(--primary-color);
    }

    .discovery-options {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
        align-items: start;
        max-width: 1200px;
        margin: 0 auto;
    }

    @media (min-width: 768px) {
        .discovery-options {
            grid-template-columns: 1fr auto 1fr;
            gap: 2rem;
            align-items: center;
        }
    }

    .divider {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: var(--text-color);
        opacity: 0.5;
        font-weight: bold;
        gap: 1rem;
    }

    .divider::before,
    .divider::after {
        content: '';
        width: 1px;
        height: 50px;
        background: var(--border-color);
    }

    @media (max-width: 767px) {
        .divider {
            flex-direction: row;
        }
        .divider::before,
        .divider::after {
            width: 50px;
            height: 1px;
        }
    }
}