:root {
    --bg: #0f172a;
    --card: #111827;
    --accent: #38bdf8;
    --text: #e5e7eb;
    --muted: #9ca3af;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    background: linear-gradient(135deg, #020617, #0f172a);
    color: var(--text);
    min-height: 100vh;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

    header h1 {
        font-size: 2.5rem;
        margin-bottom: 0.75rem;
    }

    header p {
        color: var(--muted);
        font-size: 1.1rem;
    }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.card {
    background: linear-gradient(180deg, #020617, var(--card));
    border-radius: 1rem;
    padding: 1.75rem;
    text-decoration: none;
    color: var(--text);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border 0.25s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

    .card::before {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient( circle at top right, rgba(56, 189, 248, 0.15), transparent 60% );
        opacity: 0;
        transition: opacity 0.25s ease;
    }

    .card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
        border-color: rgba(56, 189, 248, 0.4);
    }

        .card:hover::before {
            opacity: 1;
        }

    .card h2 {
        font-size: 1.4rem;
        margin-bottom: 0.5rem;
    }

    .card p {
        color: var(--muted);
        font-size: 0.95rem;
        line-height: 1.4;
    }

.picture {
    border-radius: 10px;
}

footer {
    text-align: center;
    margin-top: 4rem;
    color: var(--muted);
    font-size: 0.9rem;
}