:root {
  color-scheme: light dark;
  --accent: #b3261e;
  --border: color-mix(in srgb, currentColor 18%, transparent);
  --muted: color-mix(in srgb, currentColor 60%, transparent);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  padding: 1.5rem;
  display: flex;
  justify-content: center;
}
main { width: 100%; max-width: 38rem; }
.tag {
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 0.25rem;
}
h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); margin: 0 0 0.75rem; }
h2 { font-size: 1.1rem; margin: 1.75rem 0 0.5rem; }
p { color: color-mix(in srgb, currentColor 85%, transparent); }
button {
  font: inherit; cursor: pointer; border-radius: 0.6rem;
  border: 1px solid var(--border); padding: 0.7rem 1.1rem; background: transparent;
  color: inherit;
}
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
.btn-google { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 600; }
.field { display: block; margin: 0.4rem 0; }
.choices { display: grid; gap: 0.5rem; }
label.choice {
  display: flex; align-items: flex-start; gap: 0.6rem;
  border: 1px solid var(--border); border-radius: 0.6rem; padding: 0.7rem 0.9rem;
}
label.choice small { display: block; color: var(--muted); }
.row { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; margin-top: 1.5rem; }
.note { font-size: 0.85rem; color: var(--muted); }
.error { color: var(--accent); font-size: 0.9rem; min-height: 1.2em; }
.hidden { display: none; }
@media (max-width: 480px) { body { padding: 1rem; } .row button { width: 100%; } }