/* =====================================
   IMG标签图片样式
   ===================================== */

/* 图片容器样式 */
.project-image, .news-image {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f5f6fa;
}

.project-image {
    height: 200px;
}

.news-image {
    height: 250px;
}

/* img标签基础样式 */
.project-image img, .news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.3s ease;
    display: block;
}

/* 加载状态 */
.project-image img.loading, .news-image img.loading {
    opacity: 0.7;
    filter: blur(1px);
}

/* 错误状态 */
.project-image img.error, .news-image img.error {
    opacity: 0.8;
}

/* 悬停效果 */
.project-card:hover .project-image img {
    transform: scale(1.05);
}

.news-card:hover .news-image img {
    transform: scale(1.02);
}

/* 图片叠加效果层 */
.project-image::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.2) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
    z-index: 1;
    pointer-events: none;
}

.project-card:hover .project-image::before {
    transform: translateX(100%);
}

/* 图片角标 */
.project-image .image-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(4px);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 2;
}

.project-card:hover .image-badge {
    opacity: 1;
    transform: translateY(0);
}

/* 图片加载动画 */
@keyframes imageLoading {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 1;
    }
}

.project-image img.loading, .news-image img.loading {
    animation: imageLoading 1.5s ease-in-out infinite;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .project-image {
        height: 180px;
    }
    
    .news-image {
        height: 220px;
    }
    
    .image-badge {
        font-size: 10px;
        padding: 4px 8px;
    }
}

@media (max-width: 480px) {
    .project-image {
        height: 160px;
    }
    
    .news-image {
        height: 200px;
    }
    
    .image-badge {
        font-size: 9px;
        padding: 3px 6px;
        top: 10px;
        right: 10px;
    }
}

/* 图片容器卡片样式 */
.project-card, .news-card {
    background: #fff;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0,0,0,0.15);
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    .project-image img, .news-image img,
    .project-image::before,
    .image-badge {
        animation: none;
        transition: none;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .image-badge {
        background: rgba(0,0,0,0.9);
        backdrop-filter: none;
    }
    
    .project-image img.loading, .news-image img.loading {
        filter: contrast(1.2);
    }
}

/* 图片聚焦状态（键盘导航） */
.project-image img:focus, .news-image img:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* 图片懒加载状态 */
.project-image img[data-lazy-src], .news-image img[data-lazy-src] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* 打印样式 */
@media print {
    .project-image img, .news-image img {
        filter: grayscale(100%);
        break-inside: avoid;
    }
    
    .image-badge,
    .project-image::before {
        display: none;
    }
}