:root {
    --bg: #0f172a;
    --card-bg: #111827;
    --card-hover: #1f2933;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #38bdf8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    padding: 2rem;
    text-align: center;
}

.header h1 {
    margin: 0;
    font-size: 2.2rem;
}

.header p {
    margin-top: 0.5rem;
    color: var(--muted);
}

main {
    flex: 1;
    padding: 2rem;
}

.dashboard {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    width: 260px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, background 0.2s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.card:hover {
    background: var(--card-hover);
    transform: translateY(-6px);
}

.card h2 {
    margin: 0 0 0.5rem 0;
    font-size: 1.3rem;
    color: var(--accent);
}

.card p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--muted);
}

.footer {
    padding: 1rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
}