/* ===== 案例详情页面样式 ===== */

/* 通用样式调整 */
.section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.section p {
    color: var(--gray-700);
    line-height: 1.8;
}

/* 面包屑导航 */
.breadcrumb {
    background: var(--gray-50);
    padding: 1rem 0;
    margin-top: 80px;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}

.breadcrumb-nav a {
    color: var(--gray-600);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-nav a:hover {
    color: var(--primary-600);
}

.breadcrumb-nav span {
    color: var(--gray-400);
}

/* 案例头部 */
.case-header {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    padding: 3rem 0;
    margin-top: 80px; /* 为导航栏留出空间 */
}

/* 案例详情部分 */
.case-detail-section {
    margin-top: 80px; /* 为导航栏留出空间 */
    padding: 3rem 0;
}

.case-header-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 4rem;
    align-items: center;
}

.case-industry {
    display: inline-block;
    background: var(--primary-600);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.case-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.case-summary {
    font-size: 1.125rem;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.case-tag {
    background: white;
    color: var(--primary-700);
    border: 2px solid var(--primary-200);
    padding: 0.5rem 1rem;
    border-radius: 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
}

.case-tag:hover {
    background: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
    transform: translateY(-2px);
}

.case-visual {
    width: 200px;
    height: 200px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.case-visual i {
    font-size: 5rem;
    color: var(--primary-600);
}

/* 项目成果指标 */
.metrics-section {
    background: white;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.metrics-section .metric-item {
    text-align: center;
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.metrics-section .metric-item:hover {
    background: var(--primary-50);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.metrics-section .metric-value {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.metrics-section .metric-label {
    color: var(--gray-700);
    font-weight: 500;
}

/* 案例详情 */
.case-details {
    background: var(--gray-50);
}

.details-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
}

.case-content {
    background: white;
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.case-content h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary-600);
}

.case-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.case-content p {
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.case-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.case-content li {
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

/* 侧边栏 */
.case-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.sidebar-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-card h3 i {
    color: var(--primary-600);
}

.sidebar-card p {
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

.project-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.info-label {
    font-weight: 600;
    color: var(--gray-800);
    min-width: 80px;
}

.info-value {
    color: var(--gray-600);
}

.contact-cta {
    background: var(--primary-600);
    color: white;
    text-align: center;
    display: block;
    padding: 1rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.contact-cta:hover {
    background: var(--primary-700);
    transform: translateY(-2px);
}

/* 技术特点 */
.tech-features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--gray-50);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--primary-50);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--primary-600);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--primary-600);
    transition: var(--transition);
}

.feature-card:hover .feature-icon i {
    color: white;
}

.feature-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--gray-700);
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .case-header-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .case-visual {
        display: none;
    }
    
    .details-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .case-header h1 {
        font-size: 2rem;
    }
    
    .case-summary {
        font-size: 1rem;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .metrics-section .metric-value {
        font-size: 2rem;
    }
    
    .case-content {
        padding: 2rem;
    }
    
    .case-content h2 {
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-section h2 {
        font-size: 2rem;
        color: white;
    }
    
    .cta-section p {
        font-size: 1rem;
        color: white;
    }
}

@media (max-width: 480px) {
    .breadcrumb-nav {
        font-size: 0.75rem;
    }
    
    .case-header {
        padding: 2rem 0;
        margin-top: 70px; /* 移动端导航栏稍微小一些 */
    }
    
    .case-detail-section {
        margin-top: 70px; /* 移动端导航栏稍微小一些 */
        padding: 2rem 0;
    }
    
    .case-header h1 {
        font-size: 1.5rem;
    }
    
    .case-tags {
        gap: 0.5rem;
    }
    
    .case-tag {
        padding: 0.375rem 0.75rem;
        font-size: 0.75rem;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .case-content {
        padding: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
}

/* CTA区域 */
.cta-section {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    color: white;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: white;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    color: white;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 页脚 */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 2rem 0;
    text-align: center;
}

/* 动画效果 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.metric-item {
    animation: slideInUp 0.6s ease-out forwards;
}

.metric-item:nth-child(1) { animation-delay: 0.1s; }
.metric-item:nth-child(2) { animation-delay: 0.2s; }
.metric-item:nth-child(3) { animation-delay: 0.3s; }
.metric-item:nth-child(4) { animation-delay: 0.4s; }