/**
 * 懒加载图片样式
 */

/* 正在加载的图片 */
img.lazy-img.lazy-loading {
    opacity: 0.5;
    transition: opacity 0.4s ease-in-out;
    background-color: #f5f5f5;
}

/* 已加载完成的图片 */
img.lazy-img.lazy-loaded {
    opacity: 1;
    animation: fadeIn 0.4s ease-in-out;
}

/* 加载失败的图片 */
img.lazy-img.lazy-error {
    opacity: 0.3;
    filter: grayscale(100%);
}

/* 淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0.5;
    }
    to {
        opacity: 1;
    }
}

/* 骨架屏效果（可选） */
img.lazy-img.lazy-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
}

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

/* 确保图片占位正确 */
img.lazy-img {
    display: inline-block;
    min-height: 1px;
}