:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #666;
  --accent: #c8102e;
  --border: #ddd;
  --warning-bg: #fff6e0;
  --error-bg: #ffe5e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181c;
    --card: #1f2228;
    --text: #eceff4;
    --muted: #9aa2ad;
    --accent: #ff5a70;
    --border: #34383f;
    --warning-bg: #3a3323;
    --error-bg: #40272b;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, sans-serif;
  line-height: 1.45;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

h1 { margin-bottom: 0.2rem; }
.subtitle { margin-top: 0; color: var(--muted); }

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

@media (max-width: 38rem) {
  .stations { grid-template-columns: 1fr; }
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  background: var(--card);
}

.station-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}

.station-row input[type="text"] { flex: 1; min-width: 0; }

input, select, button {
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.45rem 0.6rem;
}

.penalty { width: 4.2rem; }
.unit { color: var(--muted); font-size: 0.85rem; }

button { cursor: pointer; }
button.add { background: none; border: 1px dashed var(--border); width: 100%; color: var(--muted); }
button.remove { padding: 0.2rem 0.55rem; color: var(--muted); }

.time-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

#search-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 0.45rem 1.4rem;
  margin-left: auto;
}

#search-button:disabled { opacity: 0.6; }

#feedback { border-radius: 8px; padding: 0.6rem 0.9rem; margin-top: 1rem; }
#feedback.warning { background: var(--warning-bg); }
#feedback.error { background: var(--error-bg); }
#feedback p { margin: 0.2rem 0; }

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 1.5rem;
}

.results-header label { color: var(--muted); font-size: 0.9rem; }

#results { list-style: none; padding: 0; margin: 0; }

.journey {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  margin-bottom: 0.7rem;
}

.journey-head {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.times { font-weight: 700; font-variant-numeric: tabular-nums; }
.meta { color: var(--muted); font-size: 0.9rem; }
.route { color: var(--muted); font-size: 0.9rem; margin-top: 0.15rem; }

.lines { margin-top: 0.4rem; display: flex; flex-wrap: wrap; gap: 0.3rem; }

.line {
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.1rem 0.45rem;
}

details { margin-top: 0.5rem; }
summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }
.leg { margin: 0.25rem 0 0.25rem 1rem; font-size: 0.9rem; }