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

body {
    background: #0f172a;
    color: #e5e7eb;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: #020617;
    padding: 1rem 2rem;
    border-bottom: 1px solid #1f2937;
}

nav a {
    color: #e5e7eb;
    text-decoration: none;
    margin-right: 1rem;
}

    nav a:hover {
        text-decoration: underline;
    }

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

footer {
    text-align: center;
    padding: 1rem 0;
    font-size: 0.875rem;
    border-top: 1px solid #1f2937;
}