:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-subtle: #f1f3f5;
  --text: #1b1f24;
  --text-muted: #5c6670;
  --border: #d9dee3;
  --accent: #0b5cad;
  --shadow: 0 2px 12px rgb(0 0 0 / 0.18);

  --mode-subway: #0b5cad;
  --mode-tram: #d42a2a;
  --mode-bus: #7b3fa0;
  --mode-sbahn: #1e8a3c;
  --mode-regio: #4d5a66;
  --mode-fern: #d97200;
  --mode-other: #7a7a7a;

  --delay-ok: #2a9d4b;
  --delay-minor: #d9a400;
  --delay-major: #e8710a;
  --delay-severe: #d32f2f;
  --delay-none: #8a9099;

  --tile-filter: saturate(0.5) brightness(1.04);
  --gap: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c2026;
    --bg-subtle: #272c34;
    --text: #e8ebee;
    --text-muted: #9aa4ae;
    --border: #39404a;
    --accent: #6fb1f2;
    --shadow: 0 2px 14px rgb(0 0 0 / 0.55);
    --mode-regio: #7d8b99;
    --tile-filter: invert(1) hue-rotate(180deg) saturate(0.45) brightness(0.92) contrast(0.92);
  }
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg-subtle);
  color: var(--text);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
}

button { font: inherit; color: inherit; }
[hidden] { display: none !important; }

#map {
  position: absolute;
  inset: 0;
  background: var(--bg-subtle);
}

.leaflet-tile-pane { filter: var(--tile-filter); }
.leaflet-container { font: inherit; background: var(--bg-subtle); }
.leaflet-container.clickable { cursor: pointer; }
.leaflet-control-attribution,
.leaflet-bar a {
  background: var(--bg) !important;
  color: var(--text-muted) !important;
  border-color: var(--border) !important;
}
.leaflet-control-attribution a { color: var(--accent) !important; }
.overlay-canvas { pointer-events: none; }

/* ---------- cards ---------- */

.card {
  position: absolute;
  z-index: 1000;
  background: var(--bg);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.controls {
  top: var(--gap);
  left: var(--gap);
  width: 300px;
  padding: 12px 14px;
  display: grid;
  gap: 10px;
}

.title { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.title h1 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.title p { margin: 0; color: var(--text-muted); font-size: 13px; }

.status {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text-muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.status .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--delay-none);
  flex: none;
}
.status[data-state="live"] .dot { background: var(--delay-ok); animation: pulse 2s ease-out infinite; }
.status[data-state="error"] .dot { background: var(--delay-severe); }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgb(42 157 75 / 0.55); }
  100% { box-shadow: 0 0 0 8px rgb(42 157 75 / 0); }
}
@media (prefers-reduced-motion: reduce) {
  .status .dot { animation: none !important; }
}

.chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px 4px 7px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  cursor: pointer;
  white-space: nowrap;
  font-size: 13px;
}
.chip .swatch { background: var(--chip-color); }
.chip .count { color: var(--text-muted); font-variant-numeric: tabular-nums; }
.chip[aria-pressed="false"] { color: var(--text-muted); background: var(--bg-subtle); }
.chip[aria-pressed="false"] .swatch { background: transparent; box-shadow: inset 0 0 0 2px var(--delay-none); }
.chip[aria-pressed="false"] .name { text-decoration: line-through; }

.swatch {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex: none;
  display: inline-block;
}
.swatch[data-delay="ok"] { background: var(--delay-ok); }
.swatch[data-delay="minor"] { background: var(--delay-minor); }
.swatch[data-delay="major"] { background: var(--delay-major); }
.swatch[data-delay="severe"] { background: var(--delay-severe); }
.swatch[data-delay="none"] { background: var(--delay-none); }

.segmented {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 13px;
}
.segmented-label { color: var(--text-muted); margin-right: 8px; }
.segmented button {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  cursor: pointer;
}
.segmented button:first-of-type { border-radius: 8px 0 0 8px; }
.segmented button:last-of-type { border-radius: 0 8px 8px 0; border-left: 0; }
.segmented button[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
  font-weight: 600;
}

.legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.legend li { display: inline-flex; align-items: center; gap: 5px; }

button:focus-visible, .row:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- detail panel ---------- */

.panel {
  top: var(--gap);
  right: var(--gap);
  width: 340px;
  max-height: calc(100% - 2 * var(--gap) - 24px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
#panel-body { overflow-y: auto; overscroll-behavior: contain; }

.close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: var(--bg-subtle);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.panel-head { padding: 14px 48px 10px 14px; border-bottom: 1px solid var(--border); }
.panel-head h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 650;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.panel-head .sub { margin: 4px 0 0; color: var(--text-muted); font-size: 13px; }
.panel-head .notes { margin: 8px 0 0; padding: 0; list-style: none; font-size: 12.5px; color: var(--text-muted); }
.panel-head .notes li { padding-left: 14px; position: relative; }
.panel-head .notes li::before { content: "•"; position: absolute; left: 3px; }
.panel-head .alert { color: var(--delay-severe); font-weight: 600; }
.panel-empty { padding: 14px; color: var(--text-muted); margin: 0; }

.badge {
  display: inline-block;
  min-width: 30px;
  padding: 1px 7px;
  border-radius: 6px;
  background: var(--badge-color, var(--mode-other));
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  text-align: center;
  white-space: nowrap;
}

.rows { list-style: none; margin: 0; padding: 4px 0; }
.row {
  display: grid;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  width: 100%;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
}
.row:hover { background: var(--bg-subtle); }
.row .time { font-variant-numeric: tabular-nums; }
.row .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .platform { color: var(--text-muted); font-size: 12.5px; white-space: nowrap; }
.row.cancelled .name, .row.cancelled .time { text-decoration: line-through; color: var(--text-muted); }

.row.departure { grid-template-columns: 42px 30px auto 1fr auto; }
.row.stop { grid-template-columns: 14px 42px 30px 1fr auto; }
.row.stop.past { color: var(--text-muted); }
.row.stop.next .name { font-weight: 650; }

/* the line with a dot per stop along the left edge of a trip */
.row.stop .rail { position: relative; align-self: stretch; }
.row.stop .rail::before {
  content: "";
  position: absolute;
  left: 5px;
  top: -6px;
  bottom: -6px;
  width: 3px;
  background: var(--badge-color);
  opacity: 0.85;
}
li:first-child > .row.stop .rail::before { top: 50%; }
li:last-child > .row.stop .rail::before { bottom: 50%; }
.row.stop .rail::after {
  content: "";
  position: absolute;
  left: 1px;
  top: 50%;
  width: 7px;
  height: 7px;
  margin-top: -5.5px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--badge-color);
}
.row.stop.past .rail::before, .row.stop.past .rail::after { opacity: 0.4; }
.row.stop.next .rail::after { background: var(--badge-color); }

.delay { font-size: 12.5px; font-weight: 650; font-variant-numeric: tabular-nums; white-space: nowrap; }
.delay[data-delay="ok"] { color: var(--delay-ok); }
.delay[data-delay="minor"] { color: var(--delay-major); }
.delay[data-delay="major"], .delay[data-delay="severe"] { color: var(--delay-severe); }

/* ---------- tooltip & banner ---------- */

.tooltip {
  position: absolute;
  z-index: 1100;
  top: 0;
  left: 0;
  pointer-events: none;
  background: var(--text);
  color: var(--bg);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 12.5px;
  white-space: nowrap;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.banner {
  position: absolute;
  z-index: 1200;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  max-width: calc(100% - 32px);
  background: var(--text);
  color: var(--bg);
  padding: 8px 14px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  text-align: center;
}

/* ---------- small screens: controls on top, details as bottom sheet ---------- */

@media (max-width: 720px) {
  :root { --gap: 8px; }

  .controls {
    width: auto;
    right: var(--gap);
    padding: 9px 12px;
    gap: 7px;
  }
  .title h1 { font-size: 16px; }
  .chips { flex-wrap: nowrap; overflow-x: auto; margin: 0 -12px; padding: 0 12px 2px; scrollbar-width: none; }
  .chips::-webkit-scrollbar { display: none; }

  .panel {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    max-height: 48%;
    border-radius: 14px 14px 0 0;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .banner { bottom: auto; top: 50%; }
}