/* ============================================
   产品中心二级分类样式 - Product Category Level 2
   ============================================ */

/**
 * 二级分类容器
 * 垂直布局，每个主分类为一行
 */
.chanpin-fenlei-2 {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: 2.5rem 0;
    position: relative;
}

/**
 * 二级分类项
 * 主分类和子分类的水平布局
 */
.chanpin-fenlei-2__item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem 1.5rem;
    background-color: var(--color-bg);
    /* border-radius: 0.75rem; */
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

.chanpin-fenlei-2__item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

/**
 * 主分类链接
 * 左侧固定宽度，突出显示
 */
.chanpin-fenlei-2__mainitem {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-white);
    background: var(--color-primary);
    transition: all var(--transition-normal);
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
}

.chanpin-fenlei-2__mainitem:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/**
 * 子分类容器
 * 弹性布局，自动换行
 */
.chanpin-fenlei-2__subitem {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

/**
 * 子分类链接
 * 简洁的胶囊样式
 */
.chanpin-fenlei-2__subitem a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-normal);
    cursor: pointer;
    white-space: nowrap;
}

.chanpin-fenlei-2__subitem a:hover {
    color: var(--color-primary);
    border-color: var(--color-primary-light);
    background-color: var(--color-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/**
 * 子分类激活状态
 */
.chanpin-fenlei-2__subitem 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);
}

.chanpin-fenlei-2__subitem a.active:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-lg);
}

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

/**
 * 平板设备 (1024px以下)
 */
@media screen and (max-width: 1024px) {
    .chanpin-fenlei-2 {
        gap: 1rem;
        padding: 2rem 0;
    }

    .chanpin-fenlei-2__item {
        gap: 1rem;
        padding: 1rem;
    }

    .chanpin-fenlei-2__mainitem {
        min-width: 100px;
        padding: 8px 16px;
        font-size: 0.875rem;
    }

    .chanpin-fenlei-2__subitem {
        gap: 0.625rem;
    }

    .chanpin-fenlei-2__subitem a {
        padding: 6px 14px;
        font-size: 0.8125rem;
    }
}

/**
 * 小平板设备 (768px以下)
 */
@media screen and (max-width: 768px) {
    .chanpin-fenlei-2__item {
        flex-direction: column;
        gap: 0.875rem;
    }

    .chanpin-fenlei-2__mainitem {
        align-self: flex-start;
    }

    .chanpin-fenlei-2__subitem {
        padding-top: 0;
        width: 100%;
    }
}

/**
 * 移动设备 (480px以下)
 */
@media screen and (max-width: 480px) {
    .chanpin-fenlei-2 {
        gap: 0.875rem;
        padding: 1.5rem 0;
    }

    .chanpin-fenlei-2__item {
        padding: 0.875rem;
        gap: 0.75rem;
    }

    .chanpin-fenlei-2__mainitem {
        min-width: auto;
        padding: 8px 16px;
        font-size: 0.8125rem;
    }

    .chanpin-fenlei-2__subitem {
        gap: 0.5rem;
    }

    .chanpin-fenlei-2__subitem a {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
}

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

/**
 * 分类项入场动画
 */
@keyframes fenlei2ItemFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.chanpin-fenlei-2__item {
    animation: fenlei2ItemFadeIn 0.5s ease forwards;
    opacity: 0;
}

.chanpin-fenlei-2__item:nth-child(1) {
    animation-delay: 0.05s;
}

.chanpin-fenlei-2__item:nth-child(2) {
    animation-delay: 0.1s;
}

.chanpin-fenlei-2__item:nth-child(3) {
    animation-delay: 0.15s;
}

.chanpin-fenlei-2__item:nth-child(4) {
    animation-delay: 0.2s;
}

.chanpin-fenlei-2__item:nth-child(5) {
    animation-delay: 0.25s;
}

.chanpin-fenlei-2__item:nth-child(6) {
    animation-delay: 0.3s;
}

/**
 * 子分类链接入场动画
 */
@keyframes subitemFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.chanpin-fenlei-2__subitem a {
    animation: subitemFadeIn 0.3s ease forwards;
    opacity: 0;
}

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

/**
 * 焦点状态样式
 */
.chanpin-fenlei-2__mainitem:focus-visible,
.chanpin-fenlei-2__subitem a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/**
 * 减少动画偏好支持
 */
@media (prefers-reduced-motion: reduce) {

    .chanpin-fenlei-2__item,
    .chanpin-fenlei-2__subitem a {
        animation: none;
        opacity: 1;
    }

    .chanpin-fenlei-2__mainitem,
    .chanpin-fenlei-2__subitem a {
        transition: none;
    }

    .chanpin-fenlei-2__mainitem:hover,
    .chanpin-fenlei-2__subitem a:hover {
        transform: none;
    }
}