:root { --achtergrond: #ffffff; --tekst: #1a1a1a; }
@media (prefers-color-scheme: dark) { :root { --achtergrond: #121212; --tekst: #f2f2f2; } }
html, body { margin: 0; height: 100%; }
body { background: var(--achtergrond); color: var(--tekst); font-family: system-ui, sans-serif; }
main { min-height: 100%; display: flex; align-items: center; justify-content: center; padding: 16px; box-sizing: border-box; text-align: center; }
h1 { font-size: clamp(2rem, 8vw, 4rem); font-weight: 700; margin: 0; }