/**
 * Wiki 树形目录样式
 *
 * @package WordPress
 * @subpackage Wiki_Doc_System
 * @since 1.0.0
 */

/* ==========================================
   Wiki 侧边栏布局
   ========================================== */

.wiki-sidebar {
    width: 300px;
    float: left;
    margin-right: 30px;
    background: var(--tb--white, #fff);
    border: 1px solid var(--tb--line, #e0e0e0);
    border-radius: 4px;
    padding: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 20px;
}

.wiki-sidebar + .content {
    margin-left: 310px;
}

/* ==========================================
   根文章简介样式
   ========================================== */

.wiki-root-description h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--tb--base, #333);
}

.wiki-root-description p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--tb--base, #444);
}

/* ==========================================
   树形目录容器
   ========================================== */
.wiki-tree-container {
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    background: transparent;
    padding: 0;
    border-radius: 0;
    border: none;
}

.wiki-tree-title {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 2px 0;
    padding-bottom: 0;
    color: var(--tb--base);
}

.wiki-tree-title a {
    color: var(--tb--main, #0073aa);
    text-decoration: none;
    transition: color 0.2s ease;
}

.wiki-tree-title a:hover {
    color: var(--tb--dark, #005a87);
}

.wiki-tree-content {
    overflow-x: hidden;
    overflow-y: auto;
    box-sizing: border-box;
    width: 100%;
}

/* ==========================================
   搜索框样式
   ========================================== */

.wiki-tree-search {
    position: relative;
    margin-bottom: 15px;
    padding: 0;
}

/* 桌面端侧边栏头部固定 - 参照移动端布局 */
@media (min-width: 1025px) {
    .wiki-sidebar {
        position: sticky;
        top: 20px;
        max-height: calc(100vh - 40px);
        /*overflow-y: auto;*/
    }
    
    .wiki-tree-container {
       /* position: relative;*/
        height: 100%;
        overflow-y: auto;
        display: flex;
        flex-direction: column;
        padding: 0;
        margin: 0;
    }
    
    /* 头部区域（标题+搜索框）固定 */
    .wiki-tree-header {
        position: sticky;
        top: 0;
        z-index: 10;
        background: var(--tb--white, #fff);
        padding: 10px 15px;
        box-sizing: border-box;
        border-bottom: 1px solid var(--tb--line, #e0e0e0);
        flex-shrink: 0; /* 不缩小 */
    }
    
    /* 目录内容区域 */
    .wiki-tree-content {
        flex: 1; /* 占据剩余空间 */
        overflow-y: auto; /* 允许内容滚动 */
        padding: 10px 5px;
        flex-shrink: 1; /* 可以缩小 */
    }
}

.wiki-search-input {
    width: 100%;
    padding: 10px 70px 10px 35px;
    font-size: 13px;
    border: 1px solid var(--tb--line);
    border-radius: 4px;
    background: var(--tb--tint);
    color: var(--tb--base);
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.wiki-search-input:focus {
    outline: none;
    border-color: var(--tb--main);
    background: var(--tb--white);
    box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.1);
}

.wiki-search-input::placeholder {
    color: var(--tb--gray, #999);
}

.wiki-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tb--gray, #999);
    pointer-events: none;
}

.wiki-search-input:focus + .wiki-search-icon {
    color: var(--tb--main, #0073aa);
}

.wiki-search-clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    cursor: pointer;
    color: var(--tb--gray, #999);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.wiki-search-clear:hover {
    color: var(--tb--base, #333);
}

.wiki-search-info {
    font-size: 12px;
    color: var(--tb--gray, #666);
    padding: 5px 0;
    text-align: center;
}

/* 搜索高亮 */
.wiki-tree-item.search-match > .wiki-tree-link {
    background: var(--tb--main);
    color: var(--tb--white);
    font-weight: 600;
}

.wiki-tree-item.search-match > .wiki-tree-link:hover {
    background: var(--tb--dark);
    color: var(--tb--white);
}

/* 搜索时隐藏不匹配的项 */
.wiki-tree-item.search-no-match {
    display: none;
}

/* 搜索时自动展开匹配的父级 */
.wiki-tree-item.search-parent-match > .wiki-tree-sub-nav {
    display: block !important;
}

.wiki-tree-item.search-parent-match > .wiki-tree-toggle {
    transform: translateY(-50%) rotate(0deg);
}

/* ==========================================
   树形目录样式
   ========================================== */

.wiki-tree-nav,
.wiki-tree-sub-nav {
    list-style: none;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    width: 100%;
    overflow-x: hidden;
}

.wiki-tree-nav {
    margin-bottom: 0;
}

.wiki-tree-sub-nav {
    margin-top: 8px;
    position: relative;
}

/* 二级目录左边框 */
.wiki-tree-nav > .wiki-tree-item > .wiki-tree-sub-nav {
    border-left: 2px solid var(--tb--line, #e0e0e0);
    margin-left: 14px;
    padding-left: 0;
}

/* 三级目录左边框 */
.wiki-tree-nav > .wiki-tree-item > .wiki-tree-sub-nav > .wiki-tree-item > .wiki-tree-sub-nav {
    border-left: 2px solid var(--tb--line, #e0e0e0);
    margin-left: 14px;
    padding-left: 0;
}

.wiki-tree-item {
    position: relative;
    margin: 0;
    padding: 0;
}

/* 文章链接 */
.wiki-tree-link {
    display: block;
    padding: 2px;
    color: var(--tb--base);
    text-decoration: none;
    font-size: 14px;
    line-height: 1.4;
    border-radius: 4px;
    transition: all 0.2s ease;
    position: relative;
}

.wiki-tree-link:hover {
    background: var(--tb--line);
    color: var(--tb--main);
}

.wiki-tree-title {
    display: inline-block;
    max-width: calc(100% - 20px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 当前文章高亮 - 加粗显示 */
.wiki-tree-item.current-item > .wiki-tree-link {
    background: transparent;
    color: var(--tb--main);
    font-weight: 700;
    border-left: 2px solid var(--tb--main);
    padding-left: 12px;
}

.wiki-tree-item.current-item > .wiki-tree-link:hover {
    background: var(--tb--line);
    color: var(--tb--dark);
}

/* 层级缩进 - 最小化缩进，展开按钮右对齐 */
.wiki-tree-nav .wiki-tree-item > .wiki-tree-link {
    padding-left: 8px;
}

/* 二级目录项缩进 */
.wiki-tree-nav > .wiki-tree-item > .wiki-tree-sub-nav > .wiki-tree-item > .wiki-tree-link {
    padding-left: 22px;
}

/* 三级目录项缩进 */
.wiki-tree-nav > .wiki-tree-item > .wiki-tree-sub-nav > .wiki-tree-item > .wiki-tree-sub-nav > .wiki-tree-item > .wiki-tree-link {
    padding-left: 36px;
}

/* 展开/折叠按钮 */
.wiki-tree-toggle {
    position: absolute;
    right: 10px;
    top: 14px;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
    z-index: 10;
    color: var(--tb--base);
    opacity: 0.6;
}

.wiki-tree-toggle::before {
    content: '\203A';
    font-size: 24px;
    line-height: 1;
   /* font-weight: bold;*/
   /* font-family: Arial, sans-serif;*/
}

.wiki-tree-toggle.expanded {
    transform: translateY(-50%) rotate(90deg);
}

.wiki-tree-toggle:hover {
    opacity: 1;
    color: var(--tb--main);
}

/* 有子文章的项 */
.wiki-tree-item.has-children > .wiki-tree-link {
    padding-right: 30px;
}

/* AJAX 加载状态 */
.content.wiki-loading {
    opacity: 0.6;
    pointer-events: none;
}

.content.wiki-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--tb--line, #e0e0e0);
    border-top-color: var(--tb--main, #0073aa);
    border-radius: 50%;
    animation: wiki-spin 0.8s linear infinite;
}

@keyframes wiki-spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ==========================================
   文章内容样式
   ========================================== */

.wiki-sidebar + .content p,
.post-wiki .content p {
    text-indent: 2em;
}

/* ==========================================
   面包屑导航样式
   ==========================================/* 面包屑导航 */
.wiki-breadcrumb-wrapper {
    margin-bottom: 20px;
    padding: 0;
    background: transparent;
    border-radius: 0;
    border: none;
}

.wiki-breadcrumb {
    font-size: 13px;
    color: var(--tb--base);
}

.wiki-breadcrumb-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

.wiki-breadcrumb-item {
    display: inline-block;
    margin: 0;
    padding: 0;
}

.wiki-breadcrumb-item a {
    color: var(--tb--main);
    text-decoration: none;
    transition: color 0.2s ease;
}

.wiki-breadcrumb-item a:hover {
    color: var(--tb--dark);
    text-decoration: underline;
}

.wiki-breadcrumb-item.current {
    color: var(--tb--base);
    font-weight: 600;
}

.wiki-breadcrumb-separator {
    display: inline-block;
    margin: 0 8px;
    color: var(--tb--gray);
    font-weight: normal;
}

/* ==========================================
   响应式设计
   ========================================== */

@media screen and (max-width: 1024px) {
    .wiki-sidebar {
        width: 240px;
        margin-right: 20px;
    }
    
    .wiki-sidebar + .content {
        margin-left: 260px;
    }
    
    .wiki-tree-link {
        padding: 6px 10px 6px 24px;
        font-size: 13px;
    }
}

@media screen and (max-width: 768px) {
    .wiki-sidebar {
        width: 100%;
        float: none;
        margin-right: 0;
        margin-bottom: 20px;
    }
    
    .wiki-sidebar + .content {
        margin-left: 0;
    }
    
    .wiki-tree-container {
        position: relative;
        top: 0;
        max-height: none; /* 移除固定高度限制 */
        height: auto; /* 让高度自适应 */
    }
    
    .wiki-breadcrumb-wrapper {
        overflow-x: auto;
    }
    
    .wiki-breadcrumb-list {
        flex-wrap: nowrap;
    }
}

/* ==========================================
   滚动条美化
   ========================================== */

.wiki-tree-container::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.wiki-tree-container::-webkit-scrollbar-track {
    background: var(--tb--tint, #f1f1f1);
    border-radius: 4px;
}

.wiki-tree-container::-webkit-scrollbar-thumb {
    background: var(--tb--line, #ccc);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: content-box;
    transition: all 0.2s ease;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.wiki-tree-container::-webkit-scrollbar-thumb:hover {
    background: var(--tb--gray, #999);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

.wiki-tree-container::-webkit-scrollbar-thumb:active {
    background: var(--tb--dark, #666);
}

/* 侧边栏滚动条 */
.wiki-sidebar::-webkit-scrollbar {
    width: 6px;
}

.wiki-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.wiki-sidebar::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.wiki-sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* wiki-tree-content 容器滚动条 */
.wiki-tree-content::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.wiki-tree-content::-webkit-scrollbar-track {
    background: var(--tb--tint, #f8f9fa);
    border-radius: 3px;
}

.wiki-tree-content::-webkit-scrollbar-thumb {
    background: var(--tb--line, #ddd);
    border-radius: 3px;
    border: 1px solid transparent;
    background-clip: content-box;
    transition: all 0.2s ease;
}

.wiki-tree-content::-webkit-scrollbar-thumb:hover {
    background: var(--tb--gray, #bbb);
}

.wiki-tree-content::-webkit-scrollbar-thumb:active {
    background: var(--tb--dark, #999);
}

/* ==========================================
   动画效果
   ========================================== */

.wiki-tree-sub-nav {
    transition: all 0.3s ease;
}

.wiki-tree-toggle {
    animation: wiki-fade-in 0.2s ease;
}

@keyframes wiki-fade-in {
    from {
        opacity: 0;
        transform: translateY(-50%) scale(0.8);
    }
    to {
        opacity: 1;
        transform: translateY(-50%) scale(1);
    }
}

/* ==========================================
   相邻文章导航样式
   ========================================== */

.wiki-sibling-navigation {
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid var(--tb--line);
    border-bottom: 1px solid var(--tb--line);
    background: transparent;
}

.wiki-sibling-nav {
    width: 100%;
}

.wiki-sibling-nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 20px;
}

.wiki-nav-prev,
.wiki-nav-next {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 15px 20px;
    background: var(--tb--tint);
    border-radius: 6px;
    text-decoration: none;
    color: var(--tb--base);
    transition: all 0.2s ease;
    border: 1px solid var(--tb--line);
    position: relative;
    min-height: 70px;
}

.wiki-nav-prev:hover,
.wiki-nav-next:hover {
    background: var(--tb--main);
    color: var(--tb--white);
    border-color: var(--tb--main);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 115, 170, 0.15);
}

.wiki-nav-label {
    font-size: 12px;
    color: var(--tb--gray);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.wiki-nav-prev:hover .wiki-nav-label,
.wiki-nav-next:hover .wiki-nav-label {
    color: rgba(255, 255, 255, 0.8);
}

.wiki-nav-title {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.wiki-nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: var(--tb--main);
    transition: all 0.2s ease;
    opacity: 0;
}

.wiki-nav-prev .wiki-nav-arrow {
    left: 15px;
}

.wiki-nav-next .wiki-nav-arrow {
    right: 15px;
}

.wiki-nav-prev:hover .wiki-nav-arrow {
    left: 20px;
    opacity: 1;
}

.wiki-nav-next:hover .wiki-nav-arrow {
    right: 20px;
    opacity: 1;
}

.wiki-nav-prev:hover .wiki-nav-arrow {
    color: var(--tb--white);
}

.wiki-nav-next:hover .wiki-nav-arrow {
    color: var(--tb--white);
}

.wiki-nav-placeholder {
    flex: 1;
    min-height: 70px;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .wiki-sibling-nav-inner {
        flex-direction: column;
        gap: 10px;
    }
    
    .wiki-nav-prev,
    .wiki-nav-next {
        width: 100%;
    }
    
    .wiki-nav-title {
        -webkit-line-clamp: 3;
    }
    
    .wiki-nav-arrow {
        opacity: 1;
        position: static;
        transform: none;
        margin-top: 10px;
        align-self: flex-end;
    }
    
    .wiki-nav-prev .wiki-nav-arrow {
        align-self: flex-start;
    }
}

/* 打印样式 */
@media print {
    .wiki-sibling-navigation {
        display: none;
    }
}

/* ==========================================
   打印样式
   ========================================== */

@media print {
    .wiki-sidebar {
        display: none;
    }
    
    .wiki-sidebar + .content {
        margin-left: 0;
    }
    
    .wiki-breadcrumb-wrapper {
        display: none;
    }
}

/* ==========================================
   移动端侧滑目录 - 桌面端禁用
   ========================================== */

@media (min-width: 1025px) {
    /* 移动端相关样式在桌面端禁用 */
    .wiki-mobile-drawer {
        display: none !important;
    }
    
    .wiki-mobile-drawer-backdrop {
        display: none !important;
    }
    
    .wiki-mobile-menu-btn {
        display: none !important;
    }
    
    /* 桌面端保留原侧边栏布局 */
    .wiki-sidebar {
        display: block !important;
    }
    
    .wiki-sidebar + .content {
        margin-left: 310px !important;
    }
}

/* ==========================================
   移动端侧滑目录样式
   ========================================== */

@media (max-width: 1024px) {
    
    /* 隐藏默认的侧边栏 */
    .wiki-sidebar {
        display: none !important;
    }
    
    /* 移除内容左侧边距 */
    .wiki-sidebar + .content {
        margin-left: 0 !important;
    }
    
    /* ==========================================
       移动端目录抽屉容器
       ========================================== */
    
    .wiki-mobile-drawer {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        max-width: 320px;
        z-index: 1000;
        background: var(--tb--white, #fff);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.15);
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        overflow: hidden;
        padding: 12px 16px;
        box-sizing: border-box;
    }
    
    .wiki-mobile-drawer.is-open {
        transform: translateX(0);
    }
    
    /* 背景遮罩层 */
    .wiki-mobile-drawer-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 999;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    /* 抽屉内容 z-index 应该大于遮罩层 */
    .wiki-mobile-drawer {
        z-index: 1000;
    }
    
    .wiki-mobile-drawer-backdrop.is-visible {
        opacity: 1;
        visibility: visible;
    }
    
    /* 关闭按钮（右上角 X） */
    .wiki-mobile-drawer-close {
        position: absolute;
        top: 12px;
        right: 12px;
        width: 32px;
        height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--tb--tint, #f1f1f1);
        border: none;
        border-radius: 50%;
        color: var(--tb--base, #333);
        cursor: pointer;
        z-index: 2; /* 放在遮罩层之上 */
        transition: all 0.2s ease;
        padding: 0;
    }
    
    .wiki-mobile-drawer-close:hover {
        background: var(--tb--main, #0073aa);
        color: #fff;
        transform: rotate(90deg);
    }
    
    .wiki-mobile-drawer-close:active {
        transform: rotate(90deg) scale(0.95);
    }
    
    /* 关闭按钮内的 SVG 图标 */
    .wiki-mobile-drawer-close svg {
        width: 20px;
        height: 20px;
        stroke: currentColor;
    }
    
    /* 目录抽屉内容 */
    .wiki-mobile-drawer .wiki-tree-container {
        margin-top: 56px;
        position: relative;
        z-index: 1;
        height: calc(100% - 106px);
        display: flex;
        flex-direction: column;
    }
    
    /* 目录内容区域（唯一滚动容器） */
    .wiki-mobile-drawer .wiki-tree-content {
        flex: 1;
        overflow-y: auto;
    }
    
    /* 针对 768px 及以下屏幕，优化移动端显示 */
    @media screen and (max-width: 768px) {
        .wiki-mobile-drawer {
            top: 0;
            height: 100%;
            box-sizing: border-box;
        }
        
        .wiki-mobile-drawer-close {
            top: 12px;
            right: 12px;
        }
        
        .wiki-mobile-drawer .wiki-tree-container {
            margin-top: 56px;
            height: calc(100% - 106px);
        }
    }
    
    /* 汉堡菜单按钮 */
    .wiki-mobile-menu-btn {
        position: fixed;
        bottom: 20px;
        left: 20px;
        width: 48px;
        height: 48px;
        background: var(--tb--main, #0073aa);
        border: none;
        border-radius: 50%;
        box-shadow: 0 4px 12px rgba(0, 115, 170, 0.3);
        color: #fff;
        cursor: pointer;
        z-index: 1001;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0;
    }
    
    .wiki-mobile-menu-btn:hover {
        background: var(--tb--dark, #005a87);
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(0, 115, 170, 0.4);
    }
    
    .wiki-mobile-menu-btn:active {
        transform: scale(0.95);
    }
    
    /* 汉堡按钮内的 SVG 图标 */
    .wiki-mobile-menu-btn svg {
        width: 24px;
        height: 24px;
        stroke: #fff;
    }
    
    /* 目录动画增强 - 滑入效果 */
    .wiki-mobile-drawer {
        will-change: transform;
    }
    
    /* 平滑滚动 */
    .wiki-mobile-drawer::-webkit-scrollbar {
        width: 6px;
    }
    
    .wiki-mobile-drawer::-webkit-scrollbar-track {
        background: rgba(0, 0, 0, 0.05);
    }
    
    .wiki-mobile-drawer::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.2);
        border-radius: 3px;
    }
    
    .wiki-mobile-drawer::-webkit-scrollbar-thumb:hover {
        background: rgba(0, 0, 0, 0.3);
    }
    
    /* 目录项动画 */
    .wiki-tree-item {
        animation: wiki-item-slide-in 0.3s ease;
    }
    
    @keyframes wiki-item-slide-in {
        from {
            opacity: 0;
            transform: translateX(-20px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    
    /* 关闭按钮隐藏 */
    .wiki-mobile-drawer-close {
        animation: wiki-scale-in 0.3s ease;
    }
    
    @keyframes wiki-scale-in {
        from {
            opacity: 0;
            transform: scale(0);
        }
        to {
            opacity: 1;
            transform: scale(1);
        }
    }
    
    /* 汉堡按钮动画 */
    .wiki-mobile-menu-btn {
        animation: wiki-float 3s ease-in-out infinite;
    }
    
    @keyframes wiki-float {
        0%, 100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-3px);
        }
    }
}

/* 触摸手势支持 */
.touch-enabled {
    /* 已添加 touch 事件监听 */
}