:root{--bg:#0b1020;--card:#151c32;--surface-2:#0e1426;--accent:#5b8cff;--accent-strong:#3050c0;--border:#2a3554;--text:#e8ecf6;--muted:#8b93a7;--danger:#ff6b6b;--success:#7ed6a5;--warn:#ffc861}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}main{max-width:760px;margin:0 auto;padding:40px 20px}h1{font-size:28px;margin-bottom:4px}.muted{color:var(--muted)}.card{background:var(--card);border-radius:12px;padding:16px;margin:12px 0}.card.error{border-left:3px solid var(--danger)}button,input,select{font:inherit}button{background:var(--accent-strong);color:#fff;border:0;border-radius:8px;padding:10px 16px;cursor:pointer}button.secondary{background:#2a3554}button:disabled{opacity:.6;cursor:not-allowed}input,select{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;color:var(--text);width:100%}.row{display:flex;gap:8px;align-items:center}a{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}