/**
 * 首页核心业务领域高级样式
 * Home Business Areas Premium Styles
 * 
 * 为行业分类卡片提供更高级、更有科技感的设计
 * 与特色产品形成视觉差异
 *
 * @package Corporate_Theme
 * @since 1.0.0
 */

/* ========================================
   行业分类网格布局 - 更大的间距
   ======================================== */
.business-areas .industry-categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin-bottom: 50px;
}

/* ========================================
   行业分类卡片 - 高级设计
   ======================================== */
.business-areas .industry-category-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 450px;
    position: relative;
    border: 1px solid rgba(0, 102, 204, 0.08);
}

/* 悬停效果 - 更明显的提升和阴影 */
.business-areas .industry-category-section:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(0, 102, 204, 0.15);
    border-color: rgba(0, 102, 204, 0.2);
}

/* 装饰性渐变边框效果 */
.business-areas .industry-category-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0066cc 0%, #0099ff 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.business-areas .industry-category-section:hover::before {
    opacity: 1;
}

/* ========================================
   图片区域 - 更大、更有层次
   ======================================== */
.business-areas .industry-category-section .category-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
}

.business-areas .industry-category-section .category-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.business-areas .industry-category-section:hover .category-image::after {
    opacity: 1;
}

.business-areas .industry-category-section .category-image a {
    display: block;
    width: 100%;
    height: 100%;
}

.business-areas .industry-category-section .category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    filter: brightness(1.05) contrast(1.05);
}

.business-areas .industry-category-section:hover .category-image img {
    transform: scale(1.08);
}

/* ========================================
   内容区域 - 更精致的排版
   ======================================== */
.business-areas .industry-category-section .category-header {
    padding: 35px 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* 标题 - 更大、更醒目 */
.business-areas .industry-category-section .category-title {
    font-size: 26px;
    font-weight: 700;
    margin: 0;
    color: #1a1a1a;
    line-height: 1.3;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 15px;
}

/* 标题下方装饰线 */
.business-areas .industry-category-section .category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, #0066cc 0%, #0099ff 100%);
    transition: width 0.4s ease;
}

.business-areas .industry-category-section:hover .category-title::after {
    width: 80px;
}

.business-areas .industry-category-section .category-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
    background: linear-gradient(90deg, #0066cc 0%, #0099ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.business-areas .industry-category-section:hover .category-title a {
    opacity: 1;
}

/* 未悬停时显示正常颜色 */
.business-areas .industry-category-section .category-title a {
    -webkit-text-fill-color: #1a1a1a;
}

.business-areas .industry-category-section:hover .category-title a {
    -webkit-text-fill-color: transparent;
}

/* 描述文字 - 更好的可读性 */
.business-areas .industry-category-section .category-description {
    font-size: 16px;
    color: #666;
    margin: 0;
    line-height: 1.8;
    flex: 1;
}

/* ========================================
   底部按钮区域 - 更现代的设计
   ======================================== */
.business-areas .industry-category-section .category-footer {
    text-align: center;
    padding: 25px 30px 35px;
    border-top: 1px solid rgba(0, 102, 204, 0.1);
    background: linear-gradient(180deg, transparent 0%, rgba(0, 102, 204, 0.02) 100%);
}

/* 按钮 - 渐变背景、更现代 */
.business-areas .industry-category-section .btn-outline-small {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 35px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    border: none;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.2);
    position: relative;
    overflow: hidden;
}

/* 按钮光泽效果 */
.business-areas .industry-category-section .btn-outline-small::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    transition: left 0.6s ease;
}

.business-areas .industry-category-section .btn-outline-small:hover::before {
    left: 100%;
}

.business-areas .industry-category-section .btn-outline-small:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.35);
    background: linear-gradient(135deg, #0052a3 0%, #0080cc 100%);
}

/* 箭头图标 */
.business-areas .industry-category-section .btn-outline-small::after {
    content: '→';
    font-size: 18px;
    transition: transform 0.3s ease;
}

.business-areas .industry-category-section .btn-outline-small:hover::after {
    transform: translateX(5px);
}

/* ========================================
   响应式设计 - 平板
   ======================================== */
@media (max-width: 1024px) {
    .business-areas .industry-categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .business-areas .industry-category-section {
        min-height: 420px;
    }
    
    .business-areas .industry-category-section .category-image {
        height: 220px;
    }
    
    .business-areas .industry-category-section .category-title {
        font-size: 24px;
    }
    
    .business-areas .industry-category-section .category-header {
        padding: 30px 25px;
    }
}

/* ========================================
   响应式设计 - 小平板
   ======================================== */
@media (max-width: 768px) {
    .business-areas .industry-categories-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .business-areas .industry-category-section {
        min-height: 400px;
    }
    
    .business-areas .industry-category-section .category-image {
        height: 200px;
    }
    
    .business-areas .industry-category-section .category-title {
        font-size: 22px;
    }
    
    .business-areas .industry-category-section .category-description {
        font-size: 15px;
    }
}

/* ========================================
   响应式设计 - 手机
   ======================================== */
@media (max-width: 480px) {
    .business-areas .industry-categories-grid {
        gap: 30px;
    }
    
    .business-areas .industry-category-section {
        min-height: 380px;
    }
    
    .business-areas .industry-category-section .category-image {
        height: 180px;
    }
    
    .business-areas .industry-category-section .category-header {
        padding: 25px 20px;
        gap: 12px;
    }
    
    .business-areas .industry-category-section .category-title {
        font-size: 20px;
        padding-bottom: 12px;
    }
    
    .business-areas .industry-category-section .category-description {
        font-size: 14px;
        line-height: 1.7;
    }
    
    .business-areas .industry-category-section .category-footer {
        padding: 20px 20px 30px;
    }
    
    .business-areas .industry-category-section .btn-outline-small {
        padding: 12px 28px;
        font-size: 14px;
    }
}

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

.business-areas .industry-category-section {
    animation: fadeInUp 0.6s ease-out;
}

.business-areas .industry-category-section:nth-child(1) {
    animation-delay: 0.1s;
}

.business-areas .industry-category-section:nth-child(2) {
    animation-delay: 0.2s;
}

.business-areas .industry-category-section:nth-child(3) {
    animation-delay: 0.3s;
}