body {
      font-family: 'Segoe UI', sans-serif;
      margin: 0;
      background: #f7f9fa;
    }
    header {
      background:  #003399;
      color: white;
      padding: 1.5em;
      text-align: center;
    }
    #map {
      height: 500px;
      margin: 1em;
      border-radius: 12px;
    }
    select {
      display: block;
      margin: 1em auto;
      padding: 0.7em;
      font-size: 1em;
      width: 90%;
      max-width: 400px;
      border-radius: 8px;
    }
    .info {
      text-align: center;
      font-size: 1.1em;
      color: #2c3e50;
    }