/* ===== casestudy.css - 客户案例样式 ===== */

/* 页面头部 */
.casestudy-hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.casestudy-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.casestudy-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 案例列表 */
.casestudy-list {
    padding: 60px 0;
    background: var(--bg-light);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
    border: 1px solid var(--border);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.case-link {
    text-decoration: none;
    display: block;
    color: inherit;
}

/* 媒体区域 */
.case-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #1a1a2e;
}

.case-image img,
.case-video-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.case-card:hover .case-image img,
.case-card:hover .case-video-preview img {
    transform: scale(1.05);
}

.case-video-preview {
    position: relative;
    cursor: pointer;
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(215, 23, 24, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.play-icon i {
    color: white;
    font-size: 1.2rem;
    margin-left: 3px;
}

.case-video-preview:hover .play-icon {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--primary);
}

/* 案例内容 */
.case-content {
    padding: 20px;
}

.case-client {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.client-name {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.85rem;
}

.client-country {
    color: var(--text-lighter);
    font-size: 0.75rem;
}

.case-content h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.4;
    color: var(--text);
}

.case-excerpt {
    color: var(--text-light);
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 12px;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.tag {
    background: var(--bg-light);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    color: var(--text-lighter);
}

.read-more {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s;
}

.read-more i {
    font-size: 0.7rem;
}

.case-link:hover .read-more {
    gap: 8px;
}

/* ===== 详情页样式 ===== */
.casestudy-detail {
    padding: 40px 0 60px;
}

.detail-header {
    text-align: center;
    margin-bottom: 40px;
}

.client-badge {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.client-badge span {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.client-badge .client-name {
    background: var(--primary-light);
    color: var(--primary);
}

.client-badge .client-country {
    background: var(--bg-light);
    color: var(--text-light);
}

.client-badge .client-industry {
    background: #e8f4fd;
    color: #2c7da0;
}

.detail-header h1 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.detail-header .subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* 媒体区域 */
.detail-media {
    margin-bottom: 50px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.video-container {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
}

.video-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.image-container img {
    width: 100%;
    height: auto;
    display: block;
}

/* 数据指标 */
.detail-metrics {
    margin-bottom: 50px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.metric-card {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 16px;
}

.metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.metric-label {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* 内容区域 */
.detail-content {
    max-width: 800px;
    margin: 0 auto;
}

.content-section {
    margin-bottom: 40px;
}

.content-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text);
    position: relative;
    padding-bottom: 12px;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary);
}

.content-section p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 引用区域 */
.quote-section {
    margin: 50px 0;
}

.quote-box {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    border-left: 4px solid var(--primary);
}

.quote-box i {
    font-size: 2rem;
    color: var(--primary);
    opacity: 0.5;
    margin-bottom: 20px;
    display: inline-block;
}

.quote-box p {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 20px;
}

.quote-author {
    margin-top: 15px;
}

.quote-author strong {
    display: block;
    color: var(--text);
    font-size: 1rem;
}

.quote-author span {
    color: var(--text-lighter);
    font-size: 0.85rem;
}

/* 标签区域 */
.detail-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 30px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 40px;
}

.tags-label {
    font-weight: 600;
    color: var(--text);
}

.detail-tags .tag {
    background: var(--bg-light);
    padding: 5px 12px;
    text-decoration: none;
    transition: all 0.3s;
}

.detail-tags .tag:hover {
    background: var(--primary);
    color: white;
}

/* 相关案例 */
.related-cases {
    margin-bottom: 50px;
}

.related-cases h2 {
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.related-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.related-card a {
    text-decoration: none;
    color: inherit;
}

.related-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.related-card:hover .related-image img {
    transform: scale(1.05);
}

.related-card h3 {
    padding: 15px 15px 5px;
    font-size: 1rem;
    font-weight: 600;
}

.related-card p {
    padding: 0 15px 15px;
    font-size: 0.8rem;
    color: var(--text-lighter);
}

/* CTA 区域 */
.detail-cta {
    text-align: center;
    background: var(--bg-light);
    padding: 50px;
    border-radius: 24px;
    margin-top: 30px;
}

.detail-cta h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.detail-cta p {
    color: var(--text-light);
    margin-bottom: 25px;
}

/* 响应式 */
@media (max-width: 992px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .casestudy-hero {
        padding: 40px 0;
    }

    .casestudy-hero h1 {
        font-size: 1.8rem;
    }

    .case-grid {
        grid-template-columns: 1fr;
    }

    .detail-header h1 {
        font-size: 1.5rem;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .detail-cta {
        padding: 30px;
    }

    .quote-box {
        padding: 25px;
    }
}