*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#fafafa;--fg:#111;--muted:#666;--border:#e5e5e5;--success:#16a34a;--error:#dc2626;--card-bg:#fff;--radius:8px}@media (prefers-color-scheme:dark){:root{--bg:#0a0a0a;--fg:#ededed;--muted:#999;--border:#2a2a2a;--card-bg:#141414}}body,html{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--fg);line-height:1.6;-webkit-font-smoothing:antialiased}