@layer base, layout, components, utilities;

@layer base {
    :root {
        --bg-color: oklch(0.12 0.015 240);
        --header-bg: oklch(0.12 0.015 240 / 0.85);
        --card-bg: oklch(0.18 0.02 240 / 0.8);
        --text-primary: oklch(0.95 0.01 240);
        --text-secondary: oklch(0.75 0.02 240);
        --accent-color: oklch(0.75 0.18 145);
        --accent-glow: oklch(0.75 0.18 145 / 0.3);
        --input-bg: oklch(0.25 0.02 240);
        --border-color: oklch(1 0 0 / 0.1);
        --shadow-deep: 0 20px 40px -15px oklch(0 0 0 / 0.6);
    }

    [data-theme="light"] {
        --bg-color: oklch(0.98 0.005 240);
        --header-bg: oklch(0.98 0.005 240 / 0.85);
        --card-bg: oklch(1 0 0);
        --text-primary: oklch(0.2 0.02 240);
        --text-secondary: oklch(0.4 0.02 240);
        --accent-color: oklch(0.6 0.18 150);
        --accent-glow: oklch(0.6 0.18 150 / 0.2);
        --input-bg: oklch(0.93 0.01 240);
        --border-color: oklch(0 0 0 / 0.08);
        --shadow-deep: 0 10px 30px -5px oklch(0 0 0 / 0.05);
    }

    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
        transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
    }

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

    .texture-overlay {
        position: fixed;
        inset: 0;
        z-index: -1;
        opacity: 0.03;
        pointer-events: none;
        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='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    }
}

@layer layout {
    .container { width: min(1300px, 92%); margin-inline: auto; }

    header {
        padding-block: 1.25rem;
        background: var(--header-bg);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 1000;
    }

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .controls { display: flex; align-items: center; gap: 1rem; }

    .partnership-btn.highlight {
        background: var(--accent-color);
        color: white;
        border: none;
        padding: 0.7rem 1.4rem;
        border-radius: 14px;
        font-weight: 800;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        box-shadow: 0 4px 15px var(--accent-glow);
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0% { transform: scale(1); }
        50% { transform: scale(1.03); box-shadow: 0 4px 25px var(--accent-glow); }
        100% { transform: scale(1); }
    }

    .divider { width: 1px; height: 30px; background: var(--border-color); margin-inline: 0.5rem; }

    .control-group { display: flex; align-items: center; gap: 0.8rem; }

    .theme-btn {
        background: var(--input-bg);
        border: 1px solid var(--border-color);
        padding: 0.5rem;
        border-radius: 10px;
        cursor: pointer;
        font-size: 1.1rem;
    }

    [data-theme="dark"] .sun, [data-theme="light"] .moon { display: none; }

    input[type="date"], select {
        background: var(--input-bg);
        color: var(--text-primary);
        border: 1px solid var(--border-color);
        padding: 0.5rem 0.8rem;
        border-radius: 10px;
        font-size: 0.85rem;
        outline: none;
    }

    .logo h1 { font-size: 1.6rem; font-weight: 900; line-height: 1; }
    .logo span { color: var(--accent-color); }
    .logo p { font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.1em; }

    main { padding-block: 3rem; }
    .news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 2.5rem; }
    
    footer { padding-block: 2.5rem; text-align: center; border-top: 1px solid var(--border-color); color: var(--text-secondary); font-size: 0.85rem; }
}

@layer components {
    .loading-state { grid-column: 1 / -1; text-align: center; padding-block: 8rem; color: var(--text-secondary); }

    /* Modal Styles */
    .modal-overlay {
        position: fixed;
        inset: 0;
        background: oklch(0 0 0 / 0.8);
        backdrop-filter: blur(8px);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 2000;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .modal-overlay.active { opacity: 1; pointer-events: auto; }

    .modal-content {
        background: var(--card-bg);
        width: min(550px, 95%);
        padding: 2.5rem;
        border-radius: 28px;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-deep);
        transform: scale(0.9);
        transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    .modal-overlay.active .modal-content { transform: scale(1); }

    .modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
    .modal-desc { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 2rem; }
    .close-btn { background: none; border: none; color: var(--text-primary); font-size: 2rem; cursor: pointer; }

    .form-group { margin-bottom: 1.5rem; }
    .form-group label { display: block; margin-bottom: 0.5rem; font-size: 0.85rem; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; }
    .form-group input, .form-group textarea {
        width: 100%;
        background: var(--input-bg);
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        padding: 0.9rem 1.1rem;
        border-radius: 14px;
        font-size: 1rem;
    }

    .submit-btn {
        width: 100%;
        background: var(--accent-color);
        color: white;
        border: none;
        padding: 1.1rem;
        border-radius: 14px;
        font-weight: 800;
        font-size: 1rem;
        cursor: pointer;
        box-shadow: 0 4px 15px var(--accent-glow);
    }
}