/* 改造案例整体布局 */
.service-cases {
    padding: 4rem 0;
    background: #f8f9fa;
}

.case-list {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 案例标题样式 */
.service-cases h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-size: 2rem;
    position: relative;
}

.service-cases h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #E1251B;
    border-radius: 2px;
}

/* 案例卡片样式 */
.case-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.case-header {
    padding: 1.5rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.case-header h3 {
    color: #2c3e50;
    margin: 0;
    font-size: 1.4rem;
}

.case-tag {
    background: #E1251B;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* 改造前后对比布局 */
.case-content {
    padding: 2rem;
}

.case-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.case-before, .case-after {
    position: relative;
}

.case-before img, .case-after img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.case-before:hover img, .case-after:hover img {
    transform: scale(1.02);
}

.image-label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(0,0,0,0.6);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* 改造说明样式 */
.image-desc {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.image-desc h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.image-desc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.image-desc li {
    color: #666;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.image-desc li:before {
    content: '•';
    color: #E1251B;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 动画效果 */
.case-item {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式布局 */
@media (max-width: 992px) {
    .case-images {
        gap: 1.5rem;
    }

    .case-before img, .case-after img {
        height: 250px;
    }
}

@media (max-width: 768px) {
    .case-images {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .case-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .case-content {
        padding: 1.5rem;
    }

    .case-before img, .case-after img {
        height: 200px;
    }

    .image-desc {
        padding: 1rem;
    }
}

/* 图片对比滑块效果 */
.comparison-slider {
    position: relative;
    width: 100%;
    height: 300px;
    border-radius: 8px;
    overflow: hidden;
}

.comparison-slider .before,
.comparison-slider .after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.comparison-slider .before {
    z-index: 1;
    width: 50%;
    overflow: hidden;
}

.comparison-slider .slider-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: #E1251B;
    border-radius: 50%;
    cursor: ew-resize;
    z-index: 3;
}

.comparison-slider .slider-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background: #E1251B;
    z-index: 2;
}

/* 图片放大预览效果 */
.case-image-preview {
    cursor: pointer;
    position: relative;
}

.case-image-preview:after {
    content: '🔍';
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background: rgba(0,0,0,0.6);
    color: white;
    padding: 8px;
    border-radius: 50%;
    font-size: 1.2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.case-image-preview:hover:after {
    opacity: 1;
}