/* ===== 模板样式（头部和尾部） ===== */

/* 隐藏旧的菜单样式 */
.dropdown-menu.menu_full,
.dropdown-menu_line,
.menu_list,
.navbar-full,
.navbar,
.navbar-header,
.navbar-menu,
.navbar-collapse,
.pc_nav,
.pc_li {
    display: none !important;
}

/* ===== 模板样式（头部和尾部） ===== */

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--bg-color);
    box-shadow: var(--shadow-sm);
}

/* 第一个头部：Logo、搜索 */
.header-top {
    height: 60px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
}

.header-top .container {
    height: 100%;
}

.header-top-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    width: 100%;
}

.header-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.logo-link {
    display: inline-block;
    text-decoration: none;
    height: 60px;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
    display: block;
}

.header-search-wrapper {
    flex-shrink: 0;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
}

.search-box {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    width: 300px;
    max-width: 100%;
    background-color: var(--bg-color);
}

@media (min-width: 768px) and (max-width: 1023px) {
    .header-search-wrapper {
        max-width: calc(100% - 300px);
    }
}

.search-input {
    flex: 1;
    padding: 0.5rem 1rem;
    border: none;
    outline: none;
    font-size: 1.4rem;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.search-input::placeholder {
    color: var(--text-light);
}

.search-btn {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: var(--text-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.search-btn:hover {
    background-color: var(--primary-hover);
}

/* 第二个头部：主导航菜单 */
.header-nav {
    height: 60px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform: translateY(0);
    opacity: 1;
    position: relative;
}

.header-nav.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

.header-nav .container {
    height: 100%;
    position: relative;
    /* container作为下拉菜单的定位基准 */
}

.nav-menu {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    height: 60px;
    width: 100%;
    padding: 0;
    margin: 0;
}

.nav-menu .pure-menu-list {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0;
    padding: 0;
    margin: 0;
    list-style: none;
}

.nav-menu .pure-menu-item {
    margin: 0;
    padding: 0;
    position: relative;
    list-style: none;
}

.menu-item-has-children {
    position: static;
}

.nav-menu .pure-menu-link {
    color: var(--text-color);
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.6rem;
    border-radius: 4px;
    margin: 0 0.25rem;
    white-space: nowrap;
    display: block;
}

/* 第一个菜单项完全左对齐 */
.nav-menu .pure-menu-item:first-child {
    margin-left: 0;
}

.nav-menu .pure-menu-item:first-child .pure-menu-link {
    margin-left: 0;
    padding-left: 0;
}

.nav-menu .pure-menu-link:hover {
    color: var(--primary-color);
    background-color: var(--primary-light);
}

/* 子菜单样式 - 只在PC端显示 */
.submenu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    margin: 0;
    margin-top: 0.5rem;
    margin-left: 0;
    margin-right: 0;
    z-index: 1000;
    min-width: 600px;
    max-width: 1200px;
    width: auto;
    /* 下拉菜单相对于container定位，确保所有菜单都左对齐 */
    transform: translateX(0);
}

.submenu-dropdown.show {
    display: block;
}

.submenu-dropdown-wrapper {
    position: relative;
    display: flex;
    align-items: stretch;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    /* 确保下拉菜单内容左对齐 */
    left: 0;
    /* 确保没有额外的左边距 */
    margin-left: 0;
    padding-left: 0;
    /* 确保border不会导致视觉突出 */
    box-sizing: border-box;
}

/* 移除响应式margin，保持下拉菜单位置固定 */

/* 最左列：一级子菜单 */
.submenu-primary {
    width: auto;
    min-width: 200px;
    flex-shrink: 0;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 1rem 0;
}

.submenu-primary-item {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    white-space: nowrap;
}

.submenu-primary-item:hover,
.submenu-primary-item.active {
    background-color: var(--bg-color);
    border-left-color: var(--primary-color);
}

.submenu-primary-item a {
    color: var(--text-color);
    font-weight: 500;
    font-size: 1.4rem;
    text-decoration: none;
    display: block;
}

.submenu-primary-item:hover a,
.submenu-primary-item.active a {
    color: var(--primary-color);
}

/* 中间列：二级子菜单 */
.submenu-secondary {
    flex: 1;
    padding: 1.5rem;
    min-width: 400px;
    overflow-y: auto;
    max-height: 600px;
}

.submenu-secondary-column {
    display: none;
}

.submenu-secondary-column.active {
    display: block;
}

.submenu-secondary-title {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.submenu-secondary-title a {
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.6rem;
    text-decoration: none;
    transition: color 0.3s ease;
}

.submenu-secondary-title a:hover {
    color: var(--primary-color);
}

.submenu-secondary-items {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.25rem 1rem;
}

.submenu-secondary-items li {
    margin: 0;
}

.submenu-secondary-items a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.4rem;
    padding: 0.4rem 0;
    display: block;
    transition: all 0.3s ease;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.submenu-secondary-items a:hover {
    color: var(--primary-color);
    padding-left: 0.5rem;
}

/* 移动端隐藏PC端菜单和子菜单 */
@media (max-width: 767px) {
    .header-nav .pure-menu-list {
        display: none;
    }
    
    .submenu-dropdown {
        display: none !important;
    }
    
    /* 移动端菜单按钮 */
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        width: 30px;
        height: 30px;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 10;
        position: relative;
        flex-shrink: 0;
    }
    
    .mobile-menu-toggle span {
        width: 100%;
        height: 3px;
        background-color: var(--text-color);
        border-radius: 3px;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }
    
    /* 移动端菜单遮罩层 */
    .mobile-menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .mobile-menu-overlay.active {
        display: block;
        opacity: 1;
    }
    
    /* 移动端菜单面板 */
    .mobile-menu-panel {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--bg-color);
        z-index: 1000;
        transition: right 0.3s ease;
        display: flex;
        flex-direction: column;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    }
    
    .mobile-menu-panel.active {
        right: 0;
    }
    
    /* 移动端菜单头部 */
    .mobile-menu-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
        background-color: var(--bg-color);
    }
    
    .mobile-menu-back,
    .mobile-menu-close {
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 0.5rem;
        color: var(--text-color);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .mobile-menu-title {
        flex: 1;
        text-align: center;
        margin: 0;
        font-size: 1.6rem;
        font-weight: 600;
        color: var(--text-color);
    }
    
    /* 移动端菜单内容 */
    .mobile-menu-content {
        flex: 1;
        overflow-y: auto;
        padding: 0;
    }
    
    .mobile-menu-level {
        display: none;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    
    .mobile-menu-level.active {
        display: block;
    }
    
    .mobile-menu-item {
        border-bottom: 1px solid var(--border-light);
    }
    
    .mobile-menu-item a,
    .mobile-menu-item button {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 1rem;
        color: var(--text-color);
        text-decoration: none;
        background: transparent;
        border: none;
        cursor: pointer;
        font-size: 1.4rem;
        text-align: left;
        transition: background-color 0.3s ease;
    }
    
    .mobile-menu-item a:hover,
    .mobile-menu-item button:hover {
        background-color: var(--bg-hover);
    }
    
    .mobile-menu-item.has-children a::after,
    .mobile-menu-item.has-children button::after {
        content: '›';
        font-size: 1.5rem;
        color: var(--text-secondary);
    }
    
    .mobile-menu-item.active > a,
    .mobile-menu-item.active > button {
        color: var(--primary-color);
        font-weight: 600;
    }
    
    /* 移动端响应式调整 */
    .header-top {
        height: 60px;
        padding: 0;
        min-height: 60px;
        max-height: 60px;
        overflow: hidden;
    }
    
    .header-top .container {
        height: 60px;
        padding: 0 1rem;
    }
    
    .header-top-content {
        flex-direction: row;
        height: 60px;
        gap: 0.5rem;
        align-items: center;
        min-height: 60px;
        max-height: 60px;
    }
    
    .header-logo {
        flex-shrink: 0;
        width: auto;
        height: 60px;
        display: flex;
        align-items: center;
    }
    
    .logo-link {
        height: 60px;
        display: flex;
        align-items: center;
    }
    
    .logo-img {
        height: 40px;
        max-height: 40px;
    }
    
    .header-search-wrapper {
        flex: 1;
        min-width: 0;
        width: auto;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        height: 60px;
    }
    
    .search-box {
        flex: 1;
        min-width: 0;
        width: auto;
        height: 36px;
        max-height: 36px;
    }
    
    .search-input {
        flex: 1;
        min-width: 0;
        height: 100%;
        padding: 0.5rem;
    }
    
    .search-btn {
        height: 100%;
        width: 36px;
        flex-shrink: 0;
        padding: 0;
    }
    
    .mobile-menu-toggle {
        height: 30px;
        width: 30px;
    display: flex;
    }
}

/* PC端隐藏移动端菜单按钮 */
@media (min-width: 768px) {
    .mobile-menu-toggle,
    .mobile-menu-overlay,
    .mobile-menu-panel {
        display: none !important;
    }
}

/* ===== 主内容区域 ===== */
/* body添加padding-top为固定头部留出空间 */
body {
    padding-top: 60px !important; /* 移动端：只有一个头部 */
}

@media (min-width: 768px) {
    body {
        padding-top: 120px !important; /* PC端：两个头部的高度（60px + 60px） */
    }
}

/* 主内容区域偏移（为固定头部留出空间）- 备选方案 */
#main-content {
    margin-top: 60px; /* 移动端：只有一个头部 */
}

@media (min-width: 768px) {
    #main-content {
        margin-top: 120px; /* PC端：两个头部的高度（60px + 60px） */
    }
}

/* ===== 页脚 ===== */
.footer {
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.8;
}

.footer-info {
    margin-bottom: 0.5rem;
}

.footer-copyright {
    color: var(--text-light);
    font-size: 0.75rem;
}

.footer-copyright a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-copyright a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}