/* 加载动画 - 原生风格 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 2px solid #e5e5e5;
    border-top-color: #52c41a;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-text {
    margin-top: 12px;
    font-size: 13px;
    color: #999;
}

.loading-progress {
    width: 120px;
    height: 2px;
    background: #e5e5e5;
    border-radius: 1px;
    margin-top: 12px;
    overflow: hidden;
}

.loading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #52c41a 0%, #73d13d 100%);
    animation: progress 1.2s ease-in-out infinite;
}

@keyframes progress {
    0% {
        width: 0%;
    }
    50% {
        width: 60%;
    }
    100% {
        width: 100%;
    }
}

.loading-overlay.hidden {
    display: none;
}