:root{--fg:#1f2937;--muted:#6b7280;--brand:#0f766e;--line:#e5e7eb;--bg:#fff;--err:#b91c1c}@media (prefers-color-scheme:dark){:root{--fg:#e5e7eb;--muted:#9ca3af;--brand:#2dd4bf;--line:#374151;--bg:#111827;--err:#f87171}}*{box-sizing:border-box}body{color:var(--fg);background:var(--bg);margin:0;font-family:-apple-system,Segoe UI,Helvetica,Arial,sans-serif}main{max-width:420px;margin:12vh auto;padding:0 16px}h1{margin:0 0 1rem;font-size:1.5rem}form{gap:12px;display:grid}label{gap:4px;font-size:.875rem;display:grid}input{border:1px solid var(--line);color:inherit;background:0 0;border-radius:6px;padding:10px;font-size:1rem}button{background:var(--brand);color:#fff;cursor:pointer;border:0;border-radius:6px;padding:10px 14px;font-size:1rem}button:disabled{opacity:.6;cursor:default}button.link,a{color:var(--brand);font-size:inherit;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:underline}.muted{color:var(--muted)}.error{color:var(--err)}.row{justify-content:space-between;align-items:center;gap:12px;display:flex}