/* 案例展示页面样式 */

/* 案例分类标签 */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.tab-btn {
    background: white;
    border: 2px solid #e0e0e0;
    color: #666;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn:hover,
.tab-btn.active {
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    border-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* 案例展示网格 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.case-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    background: white;
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.case-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

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

.case-item:hover .case-image img {
    transform: scale(1.05);
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.case-item:hover .case-overlay {
    transform: translateY(0);
}

.case-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.case-overlay p {
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
    opacity: 0.9;
}

.case-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.case-specs span {
    background: rgba(255, 255, 255, 0.2);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    backdrop-filter: blur(10px);
}

/* 技术优势 */
.tech-advantages {
    padding: 100px 0;
    background: #f8f9fa;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.advantage-item {
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #3498db, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-icon i {
    font-size: 2rem;
    color: white;
}

.advantage-item h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.advantage-item p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 联系我们区域 */
.contact-section {
    padding: 100px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.contact-info p {
    color: #7f8c8d;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.contact-details p {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 1rem;
}

.contact-details i {
    color: #3498db;
    margin-right: 15px;
    width: 20px;
}

.contact-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: white;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(52, 152, 219, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .category-tabs {
        gap: 10px;
    }
    
    .tab-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .case-image {
        height: 250px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .case-overlay {
        padding: 20px 15px 15px;
    }
    
    .case-overlay h3 {
        font-size: 1.2rem;
    }
    
    .case-specs {
        gap: 5px;
    }
    
    .case-specs span {
        padding: 3px 8px;
        font-size: 0.7rem;
    }
}