:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-soft: #dbeafe;
  --border: #e5e7eb;
  --good: #15803d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  width: min(980px, 92vw);
  margin: 28px auto;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(212, 111, 77, 0.18), transparent 28%),
    linear-gradient(135deg, #f8f2ed 0%, #fffaf5 100%);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  margin-top: 8px;
  margin-bottom: 10px;
  font-size: clamp(1.4rem, 2vw, 2rem);
}

h2 {
  margin-bottom: 6px;
  font-size: 1.2rem;
}

.badge {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 4px 10px;
  border-radius: 999px;
}

.hint {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.microcopy {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.changes {
  display: grid;
  gap: 10px;
}

.change-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fffdfa;
}

.change-card.replaced {
  background: #fafafa;
}

.change-type {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-soft);
}

.change-card.replaced .change-type {
  background: #f3f4f6;
  color: #4b5563;
}

.change-card.new .change-type {
  background: #dcfce7;
  color: var(--good);
}

.rows {
  display: grid;
  gap: 10px;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

.compare-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.compare {
  display: grid;
  gap: 10px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.toggle input {
  width: 18px;
  height: 18px;
}

.legs {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.leg {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 10px;
  align-items: end;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fafafa;
}

.leg .route {
  color: var(--text);
  font-weight: 600;
}

.leg .sub {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
}

.fare-source {
  margin-top: 6px;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
}

.row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 170px 36px;
  align-items: end;
}

label {
  font-size: 0.9rem;
  display: grid;
  gap: 6px;
  color: var(--muted);
}

input {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 0.95rem;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.btn,
.icon-btn {
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: white;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-secondary {
  background: #111827;
}

.icon-btn {
  padding: 10px;
  background: #ef4444;
}

.icon-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.summary {
  margin-top: 8px;
  padding: 12px;
  border-radius: 10px;
  background: #f8fafc;
  border: 1px solid var(--border);
  font-size: 0.95rem;
  line-height: 1.45;
}

.summary.empty {
  color: var(--muted);
}

.result-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.pass-card,
.strategy-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #ffffff;
}

.pass-card.ideal,
.strategy-card.best {
  border-color: #86efac;
  background: #f0fdf4;
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: start;
}

.pill {
  font-size: 0.78rem;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eff6ff;
  color: var(--primary);
  white-space: nowrap;
}

.pass-card.ideal .pill,
.strategy-card.best .pill {
  background: #dcfce7;
  color: var(--good);
}

.meta {
  margin: 6px 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.strategy-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 12px;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #f3f4f6;
  color: #374151;
  font-size: 0.82rem;
  font-weight: 600;
}

a {
  color: var(--primary);
}

.pass-card p + p,
.strategy-card p + p {
  margin-top: 6px;
}

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

@media (max-width: 720px) {
  .row {
    grid-template-columns: 1fr;
  }

  .leg {
    grid-template-columns: 1fr;
  }
}