body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
}
#controls {
    padding: 10px;
    background: #f8f9fa;
    border-bottom: 1px solid #ddd;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1000;
}
#map {
    flex: 1;
    width: 100%;
}
select {
    padding: 5px;
    font-size: 16px;
}