:root {
    --bg: #0f172a;
    --panel: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #60a5fa;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family:
        system-ui,
        -apple-system,
        Segoe UI,
        Roboto,
        Ubuntu,
        Cantarell,
        "Helvetica Neue",
        Arial,
        "Noto Sans",
        "Apple Color Emoji",
        "Segoe UI Emoji";
    background: linear-gradient(180deg, var(--bg), #111827);
    color: var(--text);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

.site-header,
.site-footer {
    padding: 1rem 2rem;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand {
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
}

.site-nav {
    display: flex;
    justify-content: center;
}
.site-nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
    padding: 0;
    margin: 0 0 1rem;
}
.site-nav a {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    transition:
        transform 0.08s ease-in-out,
        background 0.2s ease;
}
.site-nav a:hover {
    background: #1f2937;
    transform: translateY(-1px);
}

.grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    margin-bottom: 1.5rem;
}

.card {
    display: block;
    padding: 1.25rem;
    background: var(--panel);
    border: 1px solid #1f2937;
    border-radius: 1rem;
    text-decoration: none;
    color: var(--text);
    box-shadow:
        0 1px 0 rgba(0, 0, 0, 0.3),
        0 10px 20px rgba(0, 0, 0, 0.15) inset;
    transition:
        transform 0.08s ease-in-out,
        border-color 0.2s ease;
}
.card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}
.card h2 {
    margin: 0 0 0.25rem;
    font-size: 1.25rem;
}
.card p {
    margin: 0;
    color: var(--muted);
}

.content a {
    color: var(--accent);
}
.content h1 {
    margin-top: 0;
}