:root {
  --bg: #0e1116;
  --panel: rgba(22, 27, 34, 0.88);
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --good: #3fb950;
  --bad: #f85149;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
}

#map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}
#map.dragging { cursor: grabbing; }

#hud {
  position: absolute;
  inset: 0;
  padding: 12px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
  pointer-events: none;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  backdrop-filter: blur(8px);
  pointer-events: auto;
  font-size: 13px;
  line-height: 1.5;
}

#panel-top {
  grid-column: 1 / 2;
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  font-weight: 650;
  letter-spacing: 0.02em;
}

#panel-layers { grid-column: 3; grid-row: 1; display: grid; gap: 2px; }
#panel-layers label { display: flex; gap: 7px; align-items: center; cursor: pointer; }

#panel-trains {
  grid-column: 3;
  grid-row: 2;
  align-self: start;
  max-height: 100%;
  overflow: auto;
  min-width: 190px;
}

.panel-title { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }

#train-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 3px; }
#train-list li { display: flex; justify-content: space-between; gap: 10px; cursor: pointer; padding: 2px 4px; border-radius: 5px; }
#train-list li:hover { background: rgba(255,255,255,0.06); }
#train-list .speed { color: var(--muted); font-variant-numeric: tabular-nums; }
#train-list .stopped { color: var(--muted); }

#panel-stats {
  grid-column: 1 / 2;
  grid-row: 3;
  align-self: end;
  display: flex;
  gap: 14px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}

select {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 8px;
  font: inherit;
}

.status { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.live { background: var(--good); }
.dot.down { background: var(--bad); }

#tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 9px;
  font-size: 12px;
  transform: translate(10px, 10px);
  white-space: nowrap;
  z-index: 10;
}

@media (max-width: 720px) {
  #panel-trains, #panel-layers { display: none; }
}