:root {
  --bg: #0f172a;
  --panel: #111827;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: #1f2937;
  --accent: #38bdf8;
  --level-1: #22c55e;
  --level-2: #3b82f6;
  --level-3: #eab308;
  --level-4: #f97316;
  --level-5: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  display: grid;
  grid-template-columns: 340px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px;
  overflow-y: auto;
}

.sidebar-header h1 {
  margin: 0 0 6px;
  font-size: 1.35rem;
}

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

.legend,
.search-panel,
.court-info {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.legend h2,
.search-panel h2 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.legend ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--muted);
}

.dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot.level-1 { background: var(--level-1); }
.dot.level-pending { background: #64748b; }
.dot.level-2 { background: var(--level-2); }
.dot.level-3 { background: var(--level-3); }
.dot.level-4 { background: var(--level-4); }
.dot.level-5 { background: var(--level-5); }

label {
  display: block;
  margin: 12px 0 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

select,
.primary-btn {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0b1220;
  color: var(--text);
  padding: 10px 12px;
  font-size: 0.95rem;
}

.primary-btn {
  margin-top: 16px;
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  border: none;
  cursor: pointer;
  font-weight: 600;
}

.primary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.map-wrap {
  position: relative;
  min-height: 100vh;
}

#map {
  width: 100%;
  height: 100vh;
}

.loading {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 999px;
  z-index: 1000;
}

.hidden {
  display: none !important;
}

.court-info img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0b1220;
}

.crowd-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 700;
  margin-bottom: 12px;
}

.court-info h3 {
  margin: 12px 0 4px;
}

.court-info p {
  margin: 4px 0;
  color: var(--muted);
}

.crowd-status {
  color: var(--text) !important;
}

.court-info a {
  display: inline-block;
  margin-top: 10px;
  color: var(--accent);
}

.report-panel {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.report-panel h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.report-hint {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.85rem;
}

.report-buttons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.report-btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 4px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
  background: #334155;
}

.report-btn[data-level="1"] { background: var(--level-1); }
.report-btn[data-level="2"] { background: var(--level-2); }
.report-btn[data-level="3"] { background: var(--level-3); color: #1e293b; }
.report-btn[data-level="4"] { background: var(--level-4); }
.report-btn[data-level="5"] { background: var(--level-5); }

.report-btn:hover {
  filter: brightness(1.1);
}

.report-feedback {
  margin: 10px 0 0;
  font-size: 0.85rem;
  color: var(--accent);
  min-height: 1.2em;
}

.court-marker {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.court-marker--pending {
  background: #64748b;
  border-color: #e2e8f0;
}

/* 叢集標記：統一灰色，不依數量變色（避免與擁擠度燈號混淆） */
.marker-cluster-small,
.marker-cluster-medium,
.marker-cluster-large,
.marker-cluster {
  background-color: rgba(100, 116, 139, 0.25) !important;
}

.marker-cluster-small div,
.marker-cluster-medium div,
.marker-cluster-large div,
.marker-cluster div {
  background-color: #475569 !important;
  color: #f8fafc !important;
  border: 2px solid #e2e8f0;
  font-weight: 700;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 60vh;
  }

  #map {
    height: 60vh;
  }
}