:root {
  --bg: #14110e;
  --card: #221c17;
  --card-2: #2b241d;
  --line: #3d3329;
  --text: #f6f0e6;
  --muted: #cbbba6;
  --accent: #e0c39a;
  --accent-2: #8f6b45;
  --warn: #f0c9a0;
  --ok: #d7e3c8;
}

* { box-sizing: border-box; }

html { font-size: 100%; }

body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 500px at 50% -10%, #3a2c22 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  line-height: 1.45;
}

.wrap {
  width: min(40rem, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: 1.25rem 0 3rem;
}

header h1 {
  margin: 0;
  font-size: 1.7rem;
  letter-spacing: -0.02em;
}

header p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.card, .faq article, .ref {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
}

form.card {
  margin-top: 1rem;
  padding: 1rem;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  font-weight: 650;
  margin-bottom: 0.6rem;
}

.choice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.choice label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.45rem 0.7rem;
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  font-size: 0.95rem;
}

.choice input { accent-color: var(--accent-2); }

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.75rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.field input {
  width: 100%;
  min-height: 3rem;
  padding: 0.65rem 0.75rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  background: #120f0c;
  color: var(--text);
  font-size: 1.15rem;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.result {
  margin-top: 0.9rem;
  padding: 1rem;
}

.result h2, .faq h2 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
}

.result p, .faq p, .ref p { margin: 0.55rem 0; }

.result strong { color: var(--accent); }

.plain {
  color: var(--muted);
}

.error {
  color: var(--warn);
  margin: 0;
}

.ref {
  margin-top: 0.75rem;
  padding: 0.9rem 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq { margin-top: 1.4rem; }

.faq h2 { margin-bottom: 0.7rem; }

.faq article {
  padding: 0.85rem 1rem;
  margin-bottom: 0.6rem;
}

.faq h3 {
  margin: 0;
  font-size: 1rem;
}

footer {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 420px) {
  .choice, .row { grid-template-columns: 1fr; }
}

fieldset + fieldset { margin-top: 1rem; }