/* 客户案例页面样式 */

/* 页面标题 */
.page-header {
    background: var(--gradient);
    padding: 150px 0 80px;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 案例筛选 */
.case-filter {
    background: white;
    padding: 30px 0;
    border-bottom: 1px solid var(--light);
    position: sticky;
    top: 70px;
    z-index: 100;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    border: 2px solid var(--light);
    background: white;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    color: var(--gray);
    transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient);
    border-color: transparent;
    color: white;
}

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

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.case-image {
    position: relative;
    height: 200px;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

.case-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: white;
    color: var(--primary);
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.case-desc {
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-results {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 8px;
    color: #059669;
    font-weight: 500;
    font-size: 0.95rem;
}

.result-item i {
    font-size: 1rem;
}

.case-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s;
}

.case-link:hover {
    gap: 10px;
}

/* 客户数据 */
.client-stats {
    padding: 80px 0;
    background: white;
}

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

.stat-box {
    text-align: center;
    padding: 40px 30px;
    background: var(--light);
    border-radius: 20px;
    transition: all 0.3s;
}

.stat-box:hover {
    background: var(--gradient);
    color: white;
    transform: translateY(-5px);
}

.stat-box i {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.stat-box:hover i {
    color: white;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 5px;
}

.stat-label {
    color: var(--gray);
    font-size: 1rem;
}

.stat-box:hover .stat-label {
    color: rgba(255, 255, 255, 0.9);
}

/* 响应式 */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 120px 0 60px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .filter-buttons {
        gap: 10px;
    }
    
    .filter-btn {
        padding: 8px 18px;
        font-size: 0.9rem;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-box {
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}