@import '../css/sub.css';

/* ============================================
   产品中心页面样式 - Product Center Styles
   ============================================ */

/* --------------------------------------------
   产品分类区域 - Product Category Filter
   -------------------------------------------- */

/**
 * 产品分类容器
 * 使用弹性布局居中显示，提供上下间距
 */
.chanpin-fenlei {
    display: flex;
    flex-wrap: wrap;
    /* justify-content: center; */
    align-items: center;
    gap: 1rem;
    padding: 2.5rem 0;
    /* margin-bottom: 2rem; */
    position: relative;
}

/**
 * 分类链接基础样式
 * 采用胶囊形状设计，与头部导航风格保持一致
 */
.chanpin-fenlei a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 2rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

/**
 * 分类链接悬停效果
 * 边框颜色变化，轻微上浮阴影
 */
.chanpin-fenlei a:hover {
    color: var(--color-primary);
    border-color: var(--color-primary-light);
    background-color: var(--color-bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/**
 * 分类链接点击效果
 */
.chanpin-fenlei a:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/**
 * 当前激活分类样式
 * 使用主色调背景，白色文字
 */
.chanpin-fenlei a.active-9,
.chanpin-fenlei a.active {
    color: var(--color-text-white);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/**
 * 激活分类悬停效果
 */
.chanpin-fenlei a.active-9:hover,
.chanpin-fenlei a.active:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.chanpin-fenlei__item {
    display: flex;
    align-items: flex-start;
}

.chanpin-fenlei__item a.active-9 {
    margin-right: 1rem;
}


.chanpin-fenlei__subitem {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* --------------------------------------------
   产品列表区域 - Product List Grid
   -------------------------------------------- */

/**
 * 产品列表容器
 * 使用CSS Grid布局，响应式列数
 */
.chanpin-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 1rem 0 3rem;
}

/**
 * 产品卡片项
 * 卡片式设计，包含图片和内容区域
 */
.chanpin-item {
    position: relative;
    background-color: var(--color-bg);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 1px solid var(--color-border-light);
}

/**
 * 产品卡片悬停效果
 * 上浮、阴影增强、边框高亮
 */
.chanpin-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

/**
 * 产品图片容器
 * 固定宽高比，溢出隐藏
 */
.chanpin-item__img {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background-color: var(--color-bg-secondary);
}

/**
 * 产品图片
 * 填充模式，悬停时缩放动画
 */
.chanpin-item__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

/**
 * 图片悬停缩放效果
 */
.chanpin-item:hover .chanpin-item__img img {
    transform: scale(1.08);
}

.chanpin-item__img::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.6);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
}

.chanpin-item:hover .chanpin-item__img::before {
    opacity: 1;
}

.chanpin-item__img::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/main/logo-2.png');
    background-size: 63px 66px;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 2;
    opacity: 0;
    transition: opacity var(--transition-normal);

}

.chanpin-item:hover .chanpin-item__img::after {
    opacity: 1;
}

/**
 * 产品内容区域
 * 内边距和文字样式
 */
.chanpin-item__content {
    padding: 1.25rem 1.5rem;
    text-align: center;
}

/**
 * 产品标题
 * 字体样式和颜色
 */
.chanpin-item__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.5;
    transition: color var(--transition-fast);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

/**
 * 标题悬停颜色变化
 */
.chanpin-item:hover .chanpin-item__title {
    color: var(--color-primary);
}

/**
 * 查看详情指示器
 * 悬停时底部显示
 */
.chanpin-item::after {
    content: '查看详情';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    padding: 1.4rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-white);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    text-align: center;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.chanpin-item:hover::after {
    transform: translateY(0);
}

/* --------------------------------------------
   响应式适配 - Responsive Design
   -------------------------------------------- */

/**
 * 平板设备 (1024px以下)
 */
@media screen and (max-width: 1024px) {
    .chanpin-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .chanpin-fenlei {
        gap: 0.75rem;
        padding: 2rem 0;
    }

    .chanpin-fenlei a {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
}

/**
 * 小平板设备 (768px以下)
 */
@media screen and (max-width: 768px) {
    .chanpin-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }

    .chanpin-item__content {
        padding: 1rem;
    }

    .chanpin-item__title {
        font-size: 0.9375rem;
    }
}

/**
 * 移动设备 (480px以下)
 */
@media screen and (max-width: 480px) {
    .chanpin-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .chanpin-fenlei {
        gap: 0.5rem;
        padding: 1.5rem 0;
    }

    .chanpin-fenlei a {
        padding: 0.625rem 1.25rem;
        font-size: 0.8125rem;
    }

    .chanpin-item:hover {
        transform: translateY(-4px);
    }
}

/* --------------------------------------------
   动画效果 - Animations
   -------------------------------------------- */

/**
 * 产品卡片入场动画
 * 页面加载时依次淡入上浮
 */
@keyframes chanpinItemFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/**
 * 应用入场动画的类
 * 由JavaScript动态添加
 */
.chanpin-item--animate {
    animation: chanpinItemFadeIn 0.6s ease forwards;
    opacity: 0;
}

/**
 * 分类链接入场动画
 */
@keyframes categoryFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chanpin-fenlei a {
    animation: categoryFadeIn 0.4s ease forwards;
    opacity: 0;
}

/* --------------------------------------------
   无障碍支持 - Accessibility
   -------------------------------------------- */

/**
 * 焦点状态样式
 * 键盘导航时显示轮廓
 */
.chanpin-fenlei a:focus-visible,
.chanpin-item:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/**
 * 减少动画偏好支持
 * 尊重用户的系统动画设置
 */
@media (prefers-reduced-motion: reduce) {

    .chanpin-item,
    .chanpin-fenlei a,
    .chanpin-item__img img {
        transition: none;
        animation: none;
    }

    .chanpin-item:hover {
        transform: none;
    }

    .chanpin-item:hover .chanpin-item__img img {
        transform: none;
    }
}

/* --------------------------------------------
   加载状态 - Loading States
   -------------------------------------------- */

/**
 * 骨架屏加载效果
 * 数据加载时显示
 */
.chanpin-item--loading .chanpin-item__img {
    background: linear-gradient(90deg,
            var(--color-bg-secondary) 25%,
            var(--color-border-light) 50%,
            var(--color-bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
}

.chanpin-item--loading .chanpin-item__title {
    background: linear-gradient(90deg,
            var(--color-bg-secondary) 25%,
            var(--color-border-light) 50%,
            var(--color-bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    height: 1.5rem;
    border-radius: 0.25rem;
    color: transparent;
}

@keyframes skeletonLoading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}