body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f0f8ff;
  color: #333;
}
header {
  background: #1e90ff;
  padding: 10px;
  text-align: center;
  color: white;
}
#map { height: 520px; width: 100%; }
#results { padding: 10px; }
.card {
  background: white;
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.loading-overlay {
  display: none;
  position: absolute;
  top: 0; left: 0;
  right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: white;
  font-size: 20px;
}