/* 图像优化和兼容性处理 CSS 文件 */

/* 通用图像优化规则 */
.image-adaptive {
    position: relative;
    overflow: hidden;
    background-color: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-adaptive img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: all 0.3s ease;
}

/* 不同宽高比的图像适配 */

/* 正方形容器 (1:1) */
.image-square {
    aspect-ratio: 1 / 1;
}

/* 横向矩形容器 (16:9) */
.image-landscape {
    aspect-ratio: 16 / 9;
}

/* 竖向矩形容器 (3:4) */
.image-portrait {
    aspect-ratio: 3 / 4;
}

/* 宽屏容器 (21:9) */
.image-wide {
    aspect-ratio: 21 / 9;
}

/* 图像适配模式 */

/* 完全填充模式 - 图像可能被裁剪但会完全填满容器 */
.fit-cover img {
    object-fit: cover;
}

/* 完整显示模式 - 显示完整图像但可能留有空白 */
.fit-contain img {
    object-fit: contain;
    background-color: #f8fafc;
}

/* 拉伸模式 - 图像会被拉伸以完全填满容器 */
.fit-fill img {
    object-fit: fill;
}

/* 原始尺寸模式 - 保持图像原始大小 */
.fit-none img {
    object-fit: none;
}

/* 缩放模式 - 等比缩放到合适大小 */
.fit-scale img {
    object-fit: scale-down;
}

/* 图像位置调整 */

/* 居中显示 */
.pos-center img {
    object-position: center;
}

/* 顶部对齐 - 适用于人像照片 */
.pos-top img {
    object-position: center top;
}

/* 底部对齐 */
.pos-bottom img {
    object-position: center bottom;
}

/* 左对齐 */
.pos-left img {
    object-position: left center;
}

/* 右对齐 */
.pos-right img {
    object-position: right center;
}

/* 图像加载状态处理 */

/* 加载中的占位样式 */
.image-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* 加载失败的占位样式 */
.image-error {
    background-color: #fee2e2;
    color: #dc2626;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    text-align: center;
}

.image-error::before {
    content: "📷";
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

/* 悬停效果增强 */
.image-hover-zoom:hover img {
    transform: scale(1.05);
}

.image-hover-brightness:hover img {
    filter: brightness(1.1);
}

.image-hover-blur:hover img {
    filter: blur(2px);
}

.image-hover-grayscale:hover img {
    filter: grayscale(100%);
}

/* 图像滤镜效果 */
.filter-grayscale img {
    filter: grayscale(100%);
}

.filter-sepia img {
    filter: sepia(100%);
}

.filter-brightness img {
    filter: brightness(1.2);
}

.filter-contrast img {
    filter: contrast(1.2);
}

.filter-blur img {
    filter: blur(1px);
}

/* 响应式图像尺寸 */
@media screen and (max-width: 1200px) {
    .image-adaptive {
        min-height: 200px;
    }
}

@media screen and (max-width: 768px) {
    .image-adaptive {
        min-height: 150px;
    }
    
    /* 移动端调整宽高比 */
    .image-landscape {
        aspect-ratio: 4 / 3;
    }
    
    .image-wide {
        aspect-ratio: 16 / 9;
    }
}

@media screen and (max-width: 480px) {
    .image-adaptive {
        min-height: 120px;
    }
    
    /* 小屏幕进一步调整 */
    .image-landscape,
    .image-wide {
        aspect-ratio: 3 / 2;
    }
}

/* 图像懒加载支持 */
.image-lazy {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-lazy.loaded {
    opacity: 1;
}

/* 图像边框和阴影效果 */
.image-border img {
    border: 2px solid #e2e8f0;
}

.image-shadow img {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.image-shadow-lg img {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 圆角效果 */
.image-rounded img {
    border-radius: 8px;
}

.image-rounded-lg img {
    border-radius: 12px;
}

.image-circle img {
    border-radius: 50%;
}

/* 图像叠加效果 */
.image-overlay {
    position: relative;
}

.image-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-overlay:hover::after {
    opacity: 1;
}

/* 图像网格布局优化 */
.image-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.image-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.image-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

@media screen and (max-width: 768px) {
    .image-grid,
    .image-grid-2,
    .image-grid-3 {
        grid-template-columns: 1fr;
    }
}