/*
Theme Name: RPM Carbon Style Theme
Theme URI: https://example.com
Author: Your Name
Author URI: https://example.com
Description: 仿造 RPM Carbon 风格的 WordPress 主题，适合电商网站使用。
Version: 2.0.0
Tested up to: 6.9
Requires PHP: 7.4
Requires at least: 5.0
License: GPLv2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: my-custom-theme
Tags: e-commerce, custom-menu, featured-images, threaded-comments, translation-ready, woocommerce

这是一个仿造 RPM Carbon 风格的 WordPress 主题。
*/

/* ============================================
   基础样式重置
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* ============================================
   容器和布局
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   顶部栏（搜索、登录、购物车）
   ============================================ */
.top-bar {
    background-color: #000;
    color: #fff;
    padding: 10px 0;
    font-size: 14px;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.top-bar a {
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s;
}

.top-bar a:hover {
    opacity: 0.7;
}

.cart-icon,
.account-icon,
.search-icon {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.cart-count {
    background-color: #fff;
    color: #000;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

/* ============================================
   主头部
   ============================================ */
.site-header {
    background-color: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 20px 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.site-branding {
    flex: 1;
}

.site-title {
    font-size: 32px;
    font-weight: 700;
    margin: 0;
    letter-spacing: -1px;
}

.site-title a {
    color: #000;
    text-decoration: none;
}

.custom-logo-link img {
    max-height: 60px;
    width: auto;
}

/* ============================================
   导航菜单（多级下拉）- 纯 CSS 美化版
   ============================================ */
.main-navigation {
    background: linear-gradient(to bottom, #ffffff 0%, #fafafa 100%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
}

.main-navigation .container {
    position: relative;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    position: relative;
}

/* 主菜单列表 */
.main-navigation ul.nav-menu,
.main-navigation #primary-menu {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin: 0;
    padding: 0;
    gap: 5px;
    position: relative;
}

/* 一级菜单项 */
.main-navigation ul.nav-menu > li,
.main-navigation #primary-menu > li {
    position: relative;
    margin: 0;
}

/* 一级菜单链接 */
.main-navigation ul.nav-menu > li > a,
.main-navigation #primary-menu > li > a {
    color: #1a1a1a;
    text-decoration: none;
    padding: 20px 28px;
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border-radius: 4px 4px 0 0;
    background: transparent;
}

/* 底部指示线已移除 */

/* 一级菜单悬停和当前项样式 */
.main-navigation ul.nav-menu > li > a:hover,
.main-navigation #primary-menu > li > a:hover,
.main-navigation ul.nav-menu > li.current-menu-item > a,
.main-navigation #primary-menu > li.current-menu-item > a,
.main-navigation ul.nav-menu > li.current-menu-ancestor > a,
.main-navigation #primary-menu > li.current-menu-ancestor > a {
    color: #000;
    background: linear-gradient(to bottom, #f8f8f8, #ffffff);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

/* 底部指示线动画已移除 */

/* 一级菜单箭头图标 */
.main-navigation ul.nav-menu > li.menu-item-has-children > a,
.main-navigation #primary-menu > li.menu-item-has-children > a {
    padding-right: 40px;
}

.main-navigation ul.nav-menu > li.menu-item-has-children > a::after,
.main-navigation #primary-menu > li.menu-item-has-children > a::after {
    content: '';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid #666;
    transition: all 0.3s ease;
}

.main-navigation ul.nav-menu > li:hover > a::after,
.main-navigation #primary-menu > li:hover > a::after,
.main-navigation ul.nav-menu > li.menu-item-has-children:hover > a::after,
.main-navigation #primary-menu > li.menu-item-has-children:hover > a::after {
    border-top-color: #000;
    transform: translateY(-50%) translateY(2px);
}

/* 二级下拉菜单 - 与 primary-menu 左侧对齐 */
.main-navigation ul.nav-menu > li > .sub-menu,
.main-navigation #primary-menu > li > .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: linear-gradient(to bottom, #ffffff, #fafafa);
    min-width: 260px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    padding: 12px 0;
    border-radius: 0 0 8px 8px;
    overflow: visible;
    list-style: none;
    margin: 0;
}

/* 二级菜单对齐由 JavaScript 处理（menu-align.js） */

/* 悬停显示二级菜单 */
.main-navigation ul.nav-menu > li:hover > .sub-menu,
.main-navigation #primary-menu > li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* 二级菜单项 */
.main-navigation .sub-menu > li {
    position: relative;
    margin: 0;
    width: 100%;
}

/* 确保有子菜单的二级菜单项可以显示三级菜单 */
.main-navigation .sub-menu > li.menu-item-has-children {
    position: relative;
    overflow: visible;
}

/* 二级菜单链接 */
.main-navigation .sub-menu > li > a {
    padding: 14px 28px;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: space-between;
    white-space: nowrap;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    margin: 2px 8px;
    border-radius: 4px;
    text-decoration: none;
}

/* 二级菜单悬停效果 */
.main-navigation .sub-menu > li > a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) translateX(-10px);
    width: 4px;
    height: 4px;
    background-color: #000;
    border-radius: 50%;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 移除了 ::after 伪元素的粗条效果 */

.main-navigation .sub-menu > li > a:hover,
.main-navigation .sub-menu > li.current-menu-item > a {
    background: rgba(0, 0, 0, 0.03);
    color: #000;
    transform: translateX(5px);
}

.main-navigation .sub-menu > li > a:hover::before,
.main-navigation .sub-menu > li.current-menu-item > a::before {
    opacity: 1;
    transform: translateY(-50%) translateX(12px);
}

/* 二级菜单中的箭头（指向右侧，表示有三级菜单） */
.main-navigation .sub-menu .menu-item-has-children > a {
    padding-right: 35px;
}

.main-navigation .sub-menu .menu-item-has-children > a::after {
    content: '';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 6px solid #666;
    transition: all 0.3s ease;
}

.main-navigation .sub-menu li:hover > a::after {
    border-bottom-color: #000;
    transform: translateY(-50%) rotate(-90deg) translateX(2px);
}

/* 三级菜单 */
.main-navigation .sub-menu .sub-menu {
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 240px;
    z-index: 1001;
    border-radius: 0 8px 8px 0;
    box-shadow: 4px 12px 32px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
    list-style: none;
    margin: 0;
    padding: 12px 0;
    background: linear-gradient(to bottom, #ffffff, #fafafa);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    margin-left: 4px;
}

/* 悬停显示三级菜单 - 使用更精确和通用的选择器 */
.main-navigation .sub-menu > li.menu-item-has-children:hover > .sub-menu,
.main-navigation ul.nav-menu .sub-menu > li.menu-item-has-children:hover > .sub-menu,
.main-navigation #primary-menu .sub-menu > li.menu-item-has-children:hover > .sub-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateX(0) !important;
}

/* 三级菜单项 */
.main-navigation .sub-menu .sub-menu > li > a {
    padding: 12px 24px;
    font-size: 13px;
}

.main-navigation .sub-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

/* 此规则已合并到上面的规则中 */

.main-navigation .sub-menu li {
    width: 100%;
    margin: 0;
    position: relative;
}

.main-navigation .sub-menu > li > a {
    padding: 14px 28px;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: space-between;
    white-space: nowrap;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    margin: 2px 8px;
    border-radius: 4px;
}

.main-navigation .sub-menu > li > a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) translateX(-10px);
    width: 4px;
    height: 4px;
    background-color: #000;
    border-radius: 50%;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 移除了重复的 ::after 粗条效果 */

.main-navigation .sub-menu > li > a:hover,
.main-navigation .sub-menu > li.current-menu-item > a {
    background: rgba(0, 0, 0, 0.03);
    color: #000;
    transform: translateX(5px);
}

.main-navigation .sub-menu > li > a:hover::before,
.main-navigation .sub-menu > li.current-menu-item > a::before {
    opacity: 1;
    transform: translateY(-50%) translateX(12px);
}

/* 二级和三级菜单中的箭头 */
.main-navigation .sub-menu .menu-arrow svg {
    transform: rotate(-90deg);
}

.main-navigation .sub-menu li:hover > a > .menu-arrow svg {
    transform: rotate(-90deg) translateX(2px);
}

/* 三级菜单样式增强 */
.main-navigation .sub-menu .sub-menu {
    border-top: none;
    border-left: 3px solid #000;
    border-radius: 0 8px 8px 0;
    box-shadow: 4px 12px 32px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.main-navigation .sub-menu .sub-menu::before {
    content: '';
    position: absolute;
    left: -3px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, #000, rgba(0, 0, 0, 0.8));
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: 2px solid #000;
    color: #000;
    font-size: 20px;
    cursor: pointer;
    padding: 10px 15px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background-color: #000;
    color: #fff;
}

.menu-toggle.active {
    background-color: #000;
    color: #fff;
}

/* ============================================
   主内容区
   ============================================ */
.site-main {
    padding: 0;
    min-height: 60vh;
}

.content-area {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    padding: 40px 0;
}

@media (max-width: 768px) {
    .content-area {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   首页特色区域
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.brands-section {
    padding: 60px 0;
    background-color: #f8f8f8;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: #000;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.brand-item {
    background-color: #fff;
    padding: 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.brand-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.features-section {
    padding: 60px 0;
    background-color: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #000;
}

.feature-description {
    color: #666;
    line-height: 1.6;
}

.news-section {
    padding: 60px 0;
    background-color: #f8f8f8;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.news-item {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.news-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 20px;
}

.news-meta {
    font-size: 14px;
    color: #999;
    margin-bottom: 10px;
}

.news-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-title a {
    color: #000;
    text-decoration: none;
}

.news-title a:hover {
    color: #666;
}

.news-excerpt {
    color: #666;
    line-height: 1.6;
}

/* ============================================
   文章样式
   ============================================ */
.post {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #eee;
}

.post:last-child {
    border-bottom: none;
}

.post-title {
    font-size: 32px;
    margin-bottom: 15px;
}

.post-title a {
    color: #2c3e50;
    text-decoration: none;
}

.post-title a:hover {
    color: #3498db;
}

.post-meta {
    color: #7f8c8d;
    font-size: 14px;
    margin-bottom: 15px;
}

.post-content {
    margin-top: 20px;
}

.post-content p {
    margin-bottom: 15px;
}

.post-thumbnail {
    margin-bottom: 20px;
}

.post-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   侧边栏
   ============================================ */
.sidebar {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 5px;
}

.widget {
    margin-bottom: 30px;
}

.widget-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.widget ul {
    list-style: none;
}

.widget li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

.widget a {
    color: #3498db;
    text-decoration: none;
}

.widget a:hover {
    text-decoration: underline;
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
    background-color: #000;
    color: #fff;
    padding: 60px 0 30px;
    margin-top: 60px;
}

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

.footer-widget {
    margin-bottom: 30px;
}

.footer-widget-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-widget ul {
    list-style: none;
}

.footer-widget li {
    margin-bottom: 10px;
}

.footer-widget a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-widget a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    margin: 10px 0;
    color: #999;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

.social-links a {
    color: #fff;
    font-size: 24px;
    transition: opacity 0.3s;
}

.social-links a:hover {
    opacity: 0.7;
}

.payment-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.payment-icon {
    width: 40px;
    height: 25px;
    background-color: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    color: #000;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-wrapper {
        flex-direction: column;
        align-items: stretch;
    }

    .main-navigation ul {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: #fff;
    }

    .main-navigation.toggled ul {
        display: flex;
    }

    /* 一级菜单项样式已在上面定义 */

    .main-navigation > ul > li > a {
        padding: 15px 20px;
        border-bottom: none;
        text-transform: none;
    }

    .main-navigation > ul > li > a:hover {
        background-color: #f8f8f8;
        border-bottom: none;
        transform: none;
    }

    .main-navigation > ul > li > a::before {
        display: none;
    }

    /* 移动端下拉菜单 - 通过 JavaScript 添加 menu-open 类来显示 */
    .main-navigation .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0;
        margin: 0;
        background-color: #f8f8f8;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        display: block;
    }

    .main-navigation > ul > li.menu-open > .sub-menu,
    .main-navigation .sub-menu li.menu-open > .sub-menu {
        max-height: 1000px;
    }

    .main-navigation .sub-menu .sub-menu {
        left: auto;
        top: auto;
        margin-left: 20px;
    }

    /* 移动端箭头调整 */
    .main-navigation .menu-item-has-children > a::after {
        border-top-color: #666;
        transform: translateY(-50%) rotate(0deg);
    }

    .main-navigation > ul > li.menu-open > a::after,
    .main-navigation .sub-menu li.menu-open > a::after {
        transform: translateY(-50%) rotate(90deg);
    }

    .header-content {
        flex-direction: column;
        gap: 20px;
    }

    .top-bar-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   工具类
   ============================================ */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
}

/* ============================================
   WooCommerce 样式
   ============================================ */
.woocommerce .products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.woocommerce ul.products li.product {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.woocommerce ul.products li.product:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}