* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #1a1a1a;
}

header {
  padding: 12px 16px;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
}

header h1 {
  margin: 0 0 4px;
  font-size: 1.15rem;
  font-weight: 600;
}

.subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: #64748b;
}

#map {
  height: calc(100vh - 120px);
  min-height: 400px;
  width: 100%;
}

.legend {
  position: absolute;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  padding: 10px 12px;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
  font-size: 0.8rem;
  line-height: 1.4;
}

.density-legend {
  bottom: 48px;
  left: 12px;
  max-width: 200px;
}

.clinic-legend {
  bottom: 48px;
  right: 12px;
}

.legend strong {
  display: block;
  margin-bottom: 6px;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 3px 0;
}

.swatch {
  width: 18px;
  height: 14px;
  border: 1px solid #999;
  flex-shrink: 0;
}

.clinic-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2563eb;
  border: 1.5px solid #1e3a8a;
  flex-shrink: 0;
}

footer {
  padding: 8px 16px;
  font-size: 0.75rem;
  color: #64748b;
  background: #f8fafc;
  border-top: 1px solid #e2e8f0;
}