:root{--bg:#0e0e10;--panel:#18181b;--border:#2a2a2e;--fg:#f5f5f7;--fg-muted:#9b9ba1;--accent:#d4af37;--ok:#4ade80;--err:#f87171}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;font-size:16px;line-height:1.5}main{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem 1rem}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:2rem;max-width:480px;width:100%;box-shadow:0 4px 32px rgba(0,0,0,.4)}h1{font-size:1.5rem;margin:0 0 .5rem;font-weight:600}p{margin:.5rem 0}.muted,p{color:var(--fg-muted)}.muted{font-size:.875rem}.success{color:var(--ok)}.error{color:var(--err)}.actions{margin-top:1.5rem;display:flex;flex-direction:column;gap:.75rem}button.primary{background:var(--accent);color:#000;border:none;padding:.75rem 1.25rem;border-radius:8px;font-weight:600;font-size:1rem;cursor:pointer}button.primary:disabled{opacity:.5;cursor:not-allowed}code{background:rgba(255,255,255,.06);padding:.125rem .375rem;border-radius:4px;font-size:.875em}