body {
    margin: 0;
    background: #0b1020;
    color: #e5e7eb;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header {
    background: #020617;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.site-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #f9fafb;
}

.back-link {
    color: #93c5fd;
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    text-decoration: underline;
}

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem 3rem;
}

h1 {
    margin-top: 0;
}

.game-area {
    width: 100%;
    height: 500px;
    background: #1f2937;
    border: 1px solid rgba(148, 163, 184, 0.3);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem 0;
    color: #9ca3af;
    font-size: 1rem;
}

.section {
    background: #111827;
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: #6b7280;
    font-size: 0.8rem;
}