/* 加载动画样式 */
.loader {
    border: 16px solid #f3f3f3;
    border-top: 16px solid #3498db;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    z-index: 9999;  /* 确保加载动画在最上层 */
    background-color: rgba(255, 255, 255, 0.8);  /* 添加半透明背景 */
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.refresh-btn {
    background-color: #007BFF;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    margin: 10px;
    cursor: pointer;
    font-size: 16px;
    width: 100px;
}

.refresh-btn:hover {
    background-color: #0056b3;
}