:root{--background:#ffffff;--foreground:#1a1a1a;--muted:#595959;--accent:#305bab}@media (prefers-color-scheme:dark){:root{--background:#111318;--foreground:#f2f2f2;--muted:#a6a6a6}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--background);color:var(--foreground);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.placeholder{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px;text-align:center}.placeholder h1{color:var(--accent);font-size:3rem;margin:0 0 8px}.placeholder .muted{color:var(--muted)}