/* ============================================
   子页面增强样式 V2 - 广西平南伟联印染有限公司
   ============================================ */

/* ========== Tab标签页系统 ========== */
.tabs-container {
    margin: var(--spacing-3xl) 0;
}

.tabs-nav {
    display: flex;
    gap: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.tab-button {
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--color-primary);
}

.tab-button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 特点卡片网格 ========== */
.features-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-background-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: var(--color-background);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--color-background);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========== 工艺流程时间线 ========== */
.process-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-background);
}

.process-timeline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: var(--spacing-2xl);
    position: relative;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    z-index: 0;
}

.process-step {
    flex: 1;
    min-width: 150px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-background);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--color-background);
}

.step-title {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-bold);
}

.step-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ========== 统计数据展示 ========== */
.stats-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-background);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-secondary);
}

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.95;
}

/* ========== FAQ折叠面板 ========== */
.faq-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-background-light);
}

.faq-list {
    max-width: 900px;
    margin: var(--spacing-xl) auto 0;
}

.faq-item {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
}

.faq-question {
    padding: var(--spacing-lg) var(--spacing-xl);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
    font-size: var(--font-size-lg);
}

.faq-question:hover {
    background: var(--color-background-light);
    color: var(--color-primary);
}

.faq-icon {
    font-size: 1.5rem;
    transition: transform var(--transition-base);
    color: var(--color-primary);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer-content {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========== 技术参数表格 ========== */
.tech-params-table {
    width: 100%;
    margin: var(--spacing-xl) 0;
    border-collapse: separate;
    border-spacing: 0;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tech-params-table thead {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-background);
}

.tech-params-table th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-base);
}

.tech-params-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.tech-params-table tbody tr {
    background: var(--color-background);
    transition: background var(--transition-base);
}

.tech-params-table tbody tr:hover {
    background: var(--color-background-light);
}

.tech-params-table tbody tr:last-child td {
    border-bottom: none;
}

/* ========== 优势列表 ========== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.advantage-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.advantage-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-background);
    font-size: 1.5rem;
}

.advantage-content h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.advantage-content p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.8;
}

/* ========== 案例展示 ========== */
.cases-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-background);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.case-card {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.case-content {
    padding: var(--spacing-lg);
}

.case-title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-bold);
}

.case-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.case-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ========== CTA行动号召 ========== */
.cta-enhanced {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    text-align: center;
    color: var(--color-background);
    position: relative;
    overflow: hidden;
}

.cta-enhanced::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

.cta-enhanced h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.cta-enhanced p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.btn-cta-primary {
    background: var(--color-background);
    color: var(--color-primary);
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    display: inline-block;
    box-shadow: var(--shadow-lg);
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.btn-cta-secondary {
    background: transparent;
    color: var(--color-background);
    padding: var(--spacing-md) var(--spacing-2xl);
    border: 2px solid var(--color-background);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    display: inline-block;
}

.btn-cta-secondary:hover {
    background: var(--color-background);
    color: var(--color-primary);
    transform: translateY(-3px);
}

/* ========== 图片画廊 ========== */
.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-xl);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--color-background);
    padding: var(--spacing-lg);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

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

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .features-grid,
    .cases-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        flex-direction: column;
        gap: var(--spacing-2xl);
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tabs-nav {
        justify-content: flex-start;
        overflow-x: auto;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-cta-primary,
    .btn-cta-secondary {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .cta-enhanced h2 {
        font-size: var(--font-size-2xl);
    }
    
    .cta-enhanced p {
        font-size: var(--font-size-base);
    }
}