.custom-icon {
    border-radius: 50%;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
    transition: transform 0.2s cubic-bezier(.2,.9,.2,1);
    cursor: pointer;
    box-sizing: border-box; /* 確保邊框不會影響整體大小 */
}

.custom-icon:hover {
    transform: scale(1.2);
    z-index: 800 !important;
}

.ubike-icon {
    background: #ffd500;
    border: 2px solid white; /* 加上 2px 的白邊 */
}

.ubike-icon .material-icons {
    color: #333;
    font-size: 18px; /* 稍微縮小圖示以容納邊框 */
}

/* --- Marker Cluster --- */
/* 外層光暈 (iconSize: 40x40) */
.marker-cluster-ubike {
    background-color: rgba(255, 213, 0, 0.4) !important;
    border-radius: 50%;
}

/* 內層實心圓 */
.marker-cluster-ubike div {
    width: 32px;
    height: 32px;
    margin-left: 4px;
    margin-top: 4px;

    background-color: #ffd500 !important;
    color: black !important;
    border-radius: 50%;
    border: 2px solid white; /* 加上 2px 的白邊 */
    box-sizing: border-box;  /* 確保邊框不會影響內部佈局 */

    text-align: center;
    font-weight: bold;
    font-size: 14px;
    line-height: 28px; /* 減去上下邊框的寬度 (32 - 2*2) = 28 */
}

.ubike-icon .ubike-label {
    font-weight: 600;
    font-size: 12px;
    line-height: 26px;
    text-align: center;
    color: white;
}