:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #666666;
  --border: #dddddd;
  --sidebar-bg: #fafafa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181c;
    --fg: #e8e8e8;
    --muted: #9a9a9a;
    --border: #333333;
    --sidebar-bg: #1e2126;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
}

header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0;
  font-size: 1.25rem;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

#github-link {
  color: var(--fg);
  flex-shrink: 0;
  opacity: 0.75;
}

#github-link:hover {
  opacity: 1;
}

#layout {
  display: flex;
  height: calc(100% - 64px);
  min-height: 0;
}

#sidebar {
  width: 320px;
  max-width: 40vw;
  padding: 16px;
  overflow-y: auto;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

#map {
  flex: 1;
  min-width: 0;
}

.control label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 0.9rem;
}

.control input[type="range"] {
  width: 100%;
}

.search-row {
  display: flex;
  gap: 6px;
  margin: 0;
}

.search-row input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.95rem;
}

.search-row button {
  width: auto;
  flex-shrink: 0;
  padding: 8px 14px;
}

button {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #2c6fbb;
  color: white;
  font-size: 0.95rem;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.1);
}

.muted {
  color: var(--muted);
  font-size: 0.85rem;
}

.status {
  font-weight: 600;
  margin: 0;
}

#station-list {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

#station-list li {
  padding: 8px 4px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.9rem;
}

#station-list li:hover {
  background: rgba(128, 128, 128, 0.1);
}

.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 6px;
}

.disclaimer {
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin: 0;
}

@media (max-width: 700px) {
  #layout {
    flex-direction: column;
    height: auto;
  }
  #sidebar {
    width: 100%;
    max-width: 100%;
    max-height: 45vh;
  }
  #map {
    height: 55vh;
  }
}