body {
    margin: 0;
    padding: 0;
}
#map {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
}
#panel {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 100;
}
#toggle-panel {
    background: #0078d7;
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
    border-radius: 5px;
}
#panel-content {
    background: white;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.2);
    display: none;
}
#tabs button {
    padding: 5px 10px;
    cursor: pointer;
    border: none;
    margin-right: 5px;
    border-bottom: 2px solid transparent;
    background-color: #f1f1f1;
}
#tabs button.active {
    border-bottom: 2px solid #0078d7;
    background-color: white;
}
.content {
    display: none;
}
.content.active {
    display: block;
}
button {
    margin-top: 5px;
    padding: 5px 10px;
    cursor: pointer;
}
#start-distance.active,
#start-area.active {
    background-color: #d70000;
    color: white;
}