/**
 * 布局样式
 * MTO Moving Theme
 * 
 * @package MTOMoving
 * @since 1.0.0
 */

/* ========================================
   网站主体结构
   ======================================== */
.site {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-main {
    flex: 1;
}

/* ========================================
   头部导航 - 全站统一透明页眉
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    background-color: transparent;
    box-shadow: none;
    transition: all 0.3s ease;
}

/* 滚动后变深色背景 */
.site-header.scrolled {
    background-color: var(--primary-800);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    z-index: var(--z-fixed);
}

.site-logo a {
    display: block;
    line-height: 0;
}

.site-logo img {
    height: 48px;
    width: auto;
}

.custom-logo-link {
    display: block;
}

/* 站点标题（无Logo时显示） - 全站白色 */
.site-title {
    margin: 0;
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
}

.site-title a {
    color: var(--white);
}

/* ========================================
   主导航
   ======================================== */
.main-navigation {
    display: none;
}

@media (min-width: 1024px) {
    .main-navigation {
        display: block;
    }
}

/* 移动端隐藏桌面导航的箭头 */
@media (max-width: 1023px) {
    .main-navigation .menu-item-has-children > a::after {
        display: none !important;
    }
}

.main-navigation ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.main-navigation li {
    margin: 0;
    position: relative;
}

/* 导航链接 - 全站白色 */
.main-navigation a {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--white);
    font-weight: var(--font-medium);
    font-size: var(--text-base);
    transition: color var(--transition-base);
}

.main-navigation a:hover {
    color: var(--accent-400);
}

/* 当前页面菜单项 - 全站统一样式 */
.main-navigation .current-menu-item > a,
.main-navigation .current_page_item > a {
    color: var(--accent-400);
    font-weight: var(--font-semibold);
    position: relative;
}

/* 当前活动菜单项的下划线 - 仅用于没有子菜单的项 */
.main-navigation .current-menu-item:not(.menu-item-has-children) > a::after,
.main-navigation .current_page_item:not(.menu-item-has-children) > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--space-3);
    right: var(--space-3);
    height: 2px;
    background-color: var(--accent-400);
}

/* 子菜单容器 */
.main-navigation .menu-item-has-children {
    position: relative;
}

/* 子菜单 */
.main-navigation .sub-menu {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    min-width: 220px;
    background-color: var(--white);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
    z-index: 1000;
    border: 1px solid var(--gray-200);
    list-style: none;
    /* 重要：覆盖父级的 flex 布局，改为垂直堆叠 */
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* 为子菜单添加顶部"桥接"区域，防止鼠标移动时失去焦点 */
.main-navigation .menu-item-has-children::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 10px;
    background: transparent;
    z-index: 999;
}

.main-navigation .menu-item-has-children:hover > .sub-menu,
.main-navigation .menu-item-has-children:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition-delay: 0s;
}

/* 子菜单项 */
.main-navigation .sub-menu li {
    margin: 0;
    width: 100%;
}

.main-navigation .sub-menu a {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    white-space: nowrap;
    position: relative;
    transition: all 0.2s ease;
    text-align: left;
    box-sizing: border-box;
}

.main-navigation .sub-menu a:hover {
    background-color: var(--primary-50);
    color: var(--primary-800);
    padding-left: calc(var(--space-4) + 8px);
}

.main-navigation .sub-menu a::before {
    content: '';
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background-color: var(--accent-600);
    border-radius: 2px;
    transition: height 0.2s ease;
}

.main-navigation .sub-menu a:hover::before {
    height: 16px;
}

/* 子菜单当前页面 */
.main-navigation .sub-menu .current-menu-item > a,
.main-navigation .sub-menu .current_page_item > a {
    background-color: var(--primary-100);
    color: var(--primary-800);
    font-weight: var(--font-medium);
}

.main-navigation .sub-menu .current-menu-item > a::after,
.main-navigation .sub-menu .current_page_item > a::after {
    display: none;
}

/* 多层子菜单 */
.main-navigation .sub-menu .sub-menu {
    top: 0;
    left: 100%;
    margin-top: 0;
    margin-left: var(--space-2);
}

/* 有子菜单的菜单项添加箭头指示 */
.main-navigation .menu-item-has-children > a {
    position: relative;
    padding-right: 20px;
    display: inline-flex;
    align-items: center;
}

.main-navigation .menu-item-has-children > a::after {
    content: '';
    position: relative;
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    border-bottom: 0;
    transition: transform 0.3s ease;
}

.main-navigation .menu-item-has-children:hover > a::after {
    transform: rotate(180deg);
}

/* 确保当前活动的有子菜单项也显示三角形（覆盖底部下划线样式） */
.main-navigation .menu-item-has-children.current-menu-ancestor > a::after,
.main-navigation .menu-item-has-children.current-menu-parent > a::after,
.main-navigation .menu-item-has-children.current_page_parent > a::after,
.main-navigation .menu-item-has-children.current_page_ancestor > a::after {
    content: '';
    position: relative;
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    border-bottom: 0;
    background-color: transparent;
    transition: transform 0.3s ease;
}

/* 多层子菜单的箭头（如果需要） */
.main-navigation .sub-menu .menu-item-has-children > a::after {
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 5px solid currentColor;
    border-right: 0;
    border-top-width: 0;
    border-bottom-width: 0;
    transform: rotate(0deg);
}

.main-navigation .sub-menu .menu-item-has-children:hover > a::after {
    transform: translateX(3px);
}

/* ========================================
   移动端菜单
   ======================================== */
.menu-toggle {
    display: block;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: var(--z-fixed);
    position: relative;
}

@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
}

/* 移动端菜单按钮 - 全站白色 */
.menu-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background-color: var(--white);
    margin: 6px auto;
    transition: all 0.3s ease;
}

/* 菜单打开状态 */
.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 移动端菜单覆盖层 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 移动端菜单容器 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 400px;
    height: 100%;
    background-color: var(--white);
    z-index: var(--z-modal);
    overflow-y: auto;
    transition: right 0.3s ease;
    padding: var(--space-20) var(--space-6) var(--space-8);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-menu li {
    margin-bottom: var(--space-2);
}

.mobile-menu a {
    display: block;
    padding: var(--space-4);
    color: var(--gray-900);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    border-radius: var(--radius-base);
    transition: all 0.3s ease;
}

.mobile-menu a:hover,
.mobile-menu .current-menu-item > a,
.mobile-menu .current_page_item > a {
    background-color: var(--primary-50);
    color: var(--primary-800);
}

/* 移动端子菜单 */
.mobile-menu .sub-menu {
    list-style: none;
    padding-left: 0;
    margin-left: var(--space-4);
    margin-top: var(--space-2);
    margin-bottom: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-menu .sub-menu.active {
    max-height: 500px;
}

.mobile-menu .sub-menu li {
    margin: 0;
}

.mobile-menu .sub-menu a {
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-4);
    background-color: var(--gray-50);
    margin-bottom: var(--space-2);
    display: block;
}

.mobile-menu .sub-menu a:hover {
    background-color: var(--primary-100);
}

/* 移动端有子菜单的项添加展开按钮 */
.mobile-menu .menu-item-has-children {
    position: relative;
}

.mobile-menu .menu-item-has-children > a {
    padding-right: 48px;
    position: relative;
}

.mobile-menu .submenu-toggle {
    position: absolute;
    right: var(--space-4);
    top: var(--space-4);
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: all 0.3s ease;
    z-index: 10;
    border-radius: var(--radius-base);
}

.mobile-menu .submenu-toggle::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid currentColor;
    transition: transform 0.3s ease;
}

.mobile-menu .submenu-toggle.active::after {
    transform: rotate(180deg);
}

.mobile-menu .submenu-toggle:hover,
.mobile-menu .submenu-toggle:focus {
    color: var(--primary-800);
    background-color: rgba(0, 0, 0, 0.05);
}

/* ========================================
   页脚
   ======================================== */
.site-footer {
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
    color: var(--white);
}

/* 页脚主区域 */
.footer-main {
    padding: var(--space-16) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-8);
}

@media (min-width: 640px) {
    .footer-widgets {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-10);
    }
}

@media (min-width: 1024px) {
    .footer-widgets {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: var(--space-12);
    }
}

/* 页脚小组件区域 */
.footer-widget-area {
    display: flex;
    flex-direction: column;
}

/* 公司信息区域 */
.footer-about .footer-logo {
    margin-bottom: var(--space-5);
}

.footer-about .footer-logo img {
    height: 48px;
    width: auto;
}

.footer-description {
    color: var(--gray-300);
    line-height: 1.7;
    font-size: var(--text-sm);
    margin: 0;
}

/* 页脚标题 */
.footer-widget-title {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-5);
    color: var(--white);
    position: relative;
    padding-bottom: var(--space-3);
}

.footer-widget-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-500), transparent);
    border-radius: 2px;
}

/* 页脚链接 */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: all var(--transition-base);
    display: inline-block;
    font-size: var(--text-sm);
}

.footer-links a:hover {
    color: var(--accent-400);
    transform: translateX(4px);
}

/* 页脚联系信息 */
.footer-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    color: var(--gray-300);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-icon {
    flex-shrink: 0;
    margin-top: 2px;
    opacity: 0.8;
}

.contact-item a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-base);
}

.contact-item a:hover {
    color: var(--accent-400);
}

/* 兼容旧的footer-widget选择器 */
.footer-widget h3 {
    color: var(--white);
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
}

.footer-widget p,
.footer-widget li {
    color: var(--gray-300);
    font-size: var(--text-base);
}

.footer-widget a {
    color: var(--gray-300);
    transition: color var(--transition-base);
}

.footer-widget a:hover {
    color: var(--accent-400);
}

.footer-widget ul {
    list-style: none;
    padding: 0;
}

.footer-widget li {
    margin-bottom: var(--space-2);
}

/* 页脚底部 */
.footer-bottom {
    padding: var(--space-6) 0;
    background-color: rgba(0, 0, 0, 0.2);
}

.footer-bottom-inner {
    text-align: center;
}

.copyright {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--gray-400);
}

.copyright a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-base);
}

.copyright a:hover {
    color: var(--accent-400);
}

/* ========================================
   栅格系统
   ======================================== */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Section通用样式
   ======================================== */
.section {
    padding: var(--space-20) 0;
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    text-align: center;
    margin-bottom: var(--space-3);
    color: var(--gray-900);
}

.section-subtitle {
    font-size: var(--text-lg);
    text-align: center;
    color: var(--gray-600);
    margin-bottom: var(--space-12);
}

.section-header {
    margin-bottom: var(--space-12);
}

/* 首页优势区块样式 */
.advantages-section {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--primary-50) 100%);
}

/* 交替背景色 */
.section:nth-child(even) {
    background-color: var(--gray-50);
}