:root{color-scheme:dark;--bg: #070b12;--panel: #0f172a;--border: #1e293b;--muted: #94a3b8;--text: #e2e8f0;--accent: #22d3ee}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:radial-gradient(900px 500px at 80% 0%,#0b1220 0%,var(--bg) 55%);color:var(--text);min-height:100vh}.shell{max-width:960px;margin:0 auto;padding:28px 18px 64px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid var(--border);border-radius:14px;background:#0f172aa6}.brand{font-weight:800;letter-spacing:-.02em}.btn{border:1px solid var(--border);background:transparent;color:var(--text);border-radius:10px;padding:10px 14px;font-weight:600;cursor:pointer}.btn-primary{border-color:transparent;background:linear-gradient(135deg,#22d3ee,#818cf8);color:#070b12}.card{margin-top:22px;padding:22px;border-radius:16px;border:1px solid var(--border);background:#0f172abf}label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}input{width:100%;padding:12px;border-radius:10px;border:1px solid var(--border);background:#0b1220;color:var(--text)}.field{margin-bottom:14px}.error{color:#fecaca;font-size:.9rem;margin-top:10px}.muted{color:var(--muted);line-height:1.6}