/* 遮罩层样式 */
#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

/* 对话框内容样式 */
.modal-content {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 500px;
    width: 90%;
    transform: scale(0.9);
    transition: transform 0.3s;
}

/* 对话框显示状态 */
.modal-show {
    opacity: 1;
    visibility: visible;
}

.modal-show .modal-content {
    transform: scale(1);
}