/**
 * 懒加载图片样式
 */

/* 懒加载图片占位 */
img[data-src] {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

/* 加载中状态 */
img.lazy-loading {
    opacity: 0;
    background: #f0f0f0;
}

/* 加载完成 */
img.lazy-loaded {
    opacity: 1;
}

/* 图片容器占位 */
.bigimg img[data-src] {
    min-height: 100px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 加载完成后移除动画 */
img.lazy-loaded {
    animation: none;
    background: none;
}