:root {
  color-scheme: dark;
  --bg: #101114;
  --panel: #191b20;
  --panel-soft: #20242b;
  --line: #343a44;
  --text: #f4f7fb;
  --muted: #a9b1bd;
  --good: #4ade80;
  --warn: #fbbf24;
  --bad: #fb7185;
  --info: #67e8f9;
  --card-min-width: 280px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #263445 0, transparent 34rem), var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(1480px, 100%);
  margin: 0 auto;
  padding: 20px 12px 32px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.eyebrow,
.direction,
.meta,
.train-sub,
.platform {
  color: var(--muted);
}

.eyebrow,
.direction {
  margin: 0 0 6px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 0.95;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.35rem, 4vw, 2.35rem);
  line-height: 1;
}

.refresh {
  flex: 0 0 auto;
  min-height: 46px;
  border: 1px solid #4b5563;
  border-radius: 8px;
  padding: 0 16px;
  background: #f4f7fb;
  color: #111827;
  font-weight: 800;
  cursor: pointer;
}

.refresh:disabled {
  opacity: 0.6;
  cursor: progress;
}

.cards {
  display: grid;
  gap: 14px;
}

.route-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  padding: 16px;
  box-shadow: 0 18px 50px rgb(0 0 0 / 0.24);
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.pulse {
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border-radius: 999px;
  background: var(--good);
  box-shadow: 0 0 0 0 rgb(74 222 128 / 0.55);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 10px rgb(74 222 128 / 0);
  }
}

.meta {
  margin: 14px 0;
  font-size: 0.9rem;
}

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

.train {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 12px;
  align-items: center;
  min-height: 104px;
  border: 1px solid #2f3540;
  border-radius: 8px;
  background: var(--panel-soft);
  padding: 12px;
  transition: border-color 0.15s, background 0.15s;
}

.train:hover {
  border-color: #4b5563;
  background: #252930;
}

.train.bus {
  min-height: 92px;
}

.line-badge {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 8px;
  font-size: 1.35rem;
  font-weight: 900;
}

.train-main {
  min-width: 0;
}

.times {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.time {
  font-size: clamp(1.75rem, 7vw, 3rem);
  font-weight: 900;
  line-height: 1;
}

.arrival {
  color: var(--muted);
  font-weight: 800;
}

.train-sub {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  margin-top: 10px;
  border-radius: 8px;
  padding: 5px 9px;
  font-weight: 900;
  background: #2b3038;
}

.status.on_time {
  color: var(--good);
}

.status.delayed,
.status.service_alert {
  color: var(--warn);
}

.status.cancelled {
  color: var(--bad);
}

.status.unknown_realtime {
  color: var(--info);
}

.alert,
.global-error {
  border: 1px solid #8a6114;
  border-radius: 8px;
  background: #3b2b0d;
  color: #fde68a;
  padding: 10px 12px;
  margin-bottom: 12px;
}

.global-error {
  border-color: #9f1239;
  background: #3f121f;
  color: #fecdd3;
}

.empty {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 18px;
  color: var(--muted);
}

.hidden {
  display: none;
}

@media (min-width: 700px) {
  .shell {
    padding: 28px 20px 40px;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .route-card {
    padding: 20px;
  }
}

@media (min-width: 900px) {
  .cards {
    grid-template-columns: repeat(auto-fit, minmax(var(--card-min-width), 1fr));
  }
}

@media (min-width: 1200px) {
  .topbar {
    margin-bottom: 14px;
  }

  h1 {
    font-size: clamp(3rem, 4.5vw, 4.2rem);
  }

  h2 {
    font-size: clamp(1.75rem, 2.4vw, 2.35rem);
  }

  .route-card {
    padding: 18px;
  }

  .meta {
    margin: 12px 0;
  }

  .trains {
    gap: 8px;
  }

  .train {
    grid-template-columns: 68px 1fr;
    gap: 10px;
    min-height: 92px;
    padding: 10px;
  }

  .train.bus {
    min-height: 82px;
  }

  .line-badge {
    width: 56px;
    height: 56px;
    font-size: 1.15rem;
  }

  .time {
    font-size: clamp(2rem, 3.3vw, 2.85rem);
  }

  .status {
    min-height: 28px;
    margin-top: 8px;
    padding: 4px 8px;
  }
}

@media (min-width: 1600px) {
  .shell {
    padding-top: 24px;
  }

  .cards {
    gap: 16px;
  }

  h1 {
    font-size: 4.1rem;
  }

  h2 {
    font-size: 2.25rem;
  }
}

@media (max-width: 520px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .refresh {
    width: 100%;
  }

  .train {
    grid-template-columns: 56px 1fr;
    gap: 10px;
    min-height: 88px;
    padding: 10px;
  }

  .line-badge {
    width: 52px;
    height: 52px;
    font-size: 1.05rem;
  }
}