/* Basis Light Theme */
body {
    font-family: system-ui, sans-serif;
    max-width: 900px;
    margin: auto;
    line-height: 1.6;
    padding: 1em;
    background-color: #fafafa;
    color: #222;
}

h1, h2, h3 {
    color: #003366;
}

a {
    color: #0066cc;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.navheader, .navfooter {
    background: #003366;
    color: white;
    padding: 0.5em;
}

/* 🌙 Dark Mode */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #121212;
        color: #eee;
    }
    h1, h2, h3 {
        color: #66aaff;
    }
    a {
        color: #66aaff;
    }
    .navheader, .navfooter {
        background: #222;
        color: #eee;
    }
}