:root{--background:#0f0f0f;--foreground:#fff;--primary:#0f8;--primary-foreground:#000;--muted:#222;--muted-foreground:#999;--border:#222}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--background);color:var(--foreground);font-family:system-ui,sans-serif}