:root {
  color-scheme: light;
  --bg: #f7f3f2;
  --surface: #ffffff;
  --surface-strong: #fbeceb;
  --accent: #E2231A;
  --accent-dark: #A3160F;
  --accent-soft: #FBE0DE;
  --text: #111827;
  --muted: #6b7280;
  --border: #dbe3f0;
  --radius: 18px;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
.card {
  width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 26px; box-shadow: 0 16px 40px rgba(15,23,42,.08);
}
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.brand .crown { width: 34px; height: 34px; }
.brand h1 { font-size: 1.05rem; margin: 0; }
h2 { font-size: 1.25rem; margin: 0 0 6px; }
p.hint { color: var(--muted); font-size: 0.88rem; margin: 0 0 18px; line-height: 1.5; }
label { display: block; font-size: 0.82rem; font-weight: 600; margin: 14px 0 6px; }
input[type=text], input[type=password], input[type=tel] {
  width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border);
  font-size: 16px; background: #fff;
}
input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
button.primary {
  width: 100%; margin-top: 20px; border: 0; background: var(--accent); color: #fff;
  font-weight: 700; padding: 13px; border-radius: 12px; cursor: pointer; font-size: 0.95rem;
}
button.primary:disabled { opacity: 0.6; cursor: not-allowed; }
button.link {
  width: 100%; margin-top: 12px; border: 0; background: none; color: var(--muted);
  font-weight: 600; padding: 8px; cursor: pointer; font-size: 0.85rem; text-decoration: underline;
}
.error { color: var(--accent-dark); background: var(--accent-soft); border-radius: 10px; padding: 10px 12px; font-size: 0.85rem; margin-top: 14px; display: none; }
.notice { color: #1e6b3a; background: #e5f5ea; border-radius: 10px; padding: 10px 12px; font-size: 0.85rem; margin-top: 14px; display: none; }
.qr-box { display: flex; justify-content: center; margin: 18px 0; padding: 16px; background: #fff; border: 1px solid var(--border); border-radius: 14px; }
.secret-fallback { font-family: monospace; background: var(--surface-strong); border-radius: 10px; padding: 10px 12px; font-size: 0.85rem; word-break: break-all; text-align: center; }