/* 整体布局调整 */
.tutorial-container {
    margin-top: 1rem;
    min-height: 500px;
    margin-left: 0;
    margin-right: 0;
}

/* 左侧目录导航样式 - 模仿旧版本 */
.bd-sidebar {
    position: -webkit-sticky;
    position: sticky;
    top: 4rem;
    z-index: 1000;
    height: calc(100vh - 4rem);
    overflow-y: auto;
    border-right: 1px solid rgba(0,0,0,.1);
    padding-right: 15px; /* 增加右侧内边距，避免内容紧贴边框 */
    font-size: 0.85rem; /* 进一步调小字体 */
}

#bd-docs-nav {
    padding: 0.8rem 0;
}

.bd-links {
    padding-left: 0;
    margin-bottom: 0;
    list-style: none;
}

.bd-toc-item {
    margin-bottom: 0.4rem;
}

.bd-toc-item.active {
    border-left: 3px solid #f4645f;
    background-color: rgba(244, 100, 95, 0.05);
}

.bd-toc-link {
    display: block;
    padding: 0.35rem 0.7rem;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    white-space: normal; /* 允许换行 */
    word-break: break-word; /* 长单词换行 */
}

.bd-toc-link:hover {
    color: #f4645f;
    background-color: rgba(0,0,0,.03);
    border-left-color: #f4645f;
}

.bd-toc-item.active .bd-toc-link {
    color: #f4645f;
    font-weight: 600;
}

.bd-sidenav {
    padding-left: 1.2rem;
    margin-top: 0.4rem;
    margin-bottom: 0.8rem;
    list-style: none;
    max-height: 300px; /* 限制目录最大高度，避免过长 */
    overflow-y: auto; /* 添加滚动条 */
}

.bd-sidenav li {
    margin-bottom: 0.2rem;
}

.bd-sidenav a {
    display: block;
    padding: 0.18rem 0.35rem;
    color: #666;
    text-decoration: none;
    font-size: 0.8rem; /* 进一步调小字体 */
    transition: all 0.2s ease;
}

.bd-sidenav a:hover {
    color: #f4645f;
    background-color: rgba(0,0,0,.03);
}

/* 右侧内容区域样式 */
.bd-content {
    padding-top: 0;
    padding-left: 15px; /* 增加左侧内边距，与目录保持距离 */
    padding-right: 15px; /* 增加右侧内边距，保持对称 */
}

.article-content {
    font-size: 0.9rem; /* 进一步调小正文字体 */
    line-height: 1.6;
    color: #333;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    margin-top: 1.2rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: #333;
}

.article-content h1 {
    font-size: 1.5rem; /* 进一步调小h1字体 */
    border-bottom: 2px solid #f4645f;
    padding-bottom: 0.4rem;
    margin-top: 1rem;
}

.article-content h2 {
    font-size: 1.3rem; /* 进一步调小h2字体 */
    border-left: 4px solid #f4645f;
    padding-left: 0.8rem;
    margin-top: 1rem;
}

.article-content h3 {
    font-size: 1.1rem; /* 进一步调小h3字体 */
    margin-top: 0.8rem;
}

.article-content h4 {
    font-size: 1rem; /* 进一步调小h4字体 */
    margin-top: 0.8rem;
}

.article-content p {
    margin-bottom: 0.8rem;
    text-align: justify;
    font-size: 0.9rem;
}

.article-content ul,
.article-content ol {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    font-size: 0.9rem;
}

.article-content li {
    margin-bottom: 0.4rem;
}

.article-content pre {
    background-color: #f8f9fa;
    padding: 0.7rem;
    border-radius: 5px;
    border-left: 4px solid #f4645f;
    overflow-x: auto;
    margin: 0.8rem 0;
    font-size: 0.8rem; /* 进一步调小代码字体 */
}

.article-content code {
    color: #e83e8c;
    font-family: 'Courier New', Courier, monospace;
    background-color: #f8f9fa;
    padding: 0.15rem 0.3rem;
    border-radius: 3px;
    font-size: 0.85em;
}

.article-content blockquote {
    border-left: 4px solid #6c757d;
    padding-left: 0.8rem;
    margin-left: 0;
    color: #6c757d;
    font-style: italic;
    font-size: 0.85rem;
    margin: 0.8rem 0;
}

.article-content table {
    width: 100%;
    margin-bottom: 0.8rem;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.article-content table th,
.article-content table td {
    padding: 0.5rem;
    border: 1px solid #dee2e6;
}

.article-content table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

/* 学习资源区域 */
.tutorial-resources {
    margin-left: 0;
    margin-right: 0;
}

.tutorial-resources h3 {
    font-size: 1.2rem; /* 进一步调小字体 */
    margin-bottom: 1rem;
    color: #333;
    border-bottom: 2px solid #f4645f;
    padding-bottom: 0.4rem;
}

.tutorial-resources .card {
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    height: 100%;
    font-size: 0.85rem;
}

.tutorial-resources .card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

.tutorial-resources .card-body {
    padding: 1rem;
}

.tutorial-resources .card-title {
    font-size: 0.95rem; /* 进一步调小字体 */
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.tutorial-resources .card-text {
    font-size: 0.85rem; /* 进一步调小字体 */
    color: #666;
    margin-bottom: 0.7rem;
}

/* 调整按钮大小 */
.tutorial-resources .btn {
    font-size: 0.8rem;
    padding: 0.35rem 0.7rem;
}

/* 页面标题调整 */
.page-header.tutorial-page h1 {
    font-size: 1.6rem; /* 进一步调小字体 */
    margin-bottom: 0.4rem;
    margin-left: 0;
    margin-right: 0;
}

.tutorial-info {
    font-size: 0.9rem; /* 进一步调小字体 */
    color: #666;
    margin-bottom: 1rem;
    margin-left: 0;
    margin-right: 0;
}

/* 目录内链接样式 */
.bd-sidenav a[href^="#"] {
    color: #666;
    text-decoration: none;
}

.bd-sidenav a[href^="#"]:hover {
    color: #f4645f;
}

/* 代码块中的行号 */
pre code {
    counter-reset: line-numbering;
}

pre code .line::before {
    content: counter(line-numbering);
    counter-increment: line-numbering;
    padding-right: 1em;
    width: 1.5em;
    text-align: right;
    opacity: 0.5;
    display: inline-block;
    color: #999;
}

/* 调整间距 */
.py-md-3 {
    padding-top: 0.6rem !important;
    padding-bottom: 0.6rem !important;
}

.px-md-4 {
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
}

/* 调整行高和间距 */
.article-content {
    line-height: 1.6;
}

.article-content p {
    line-height: 1.6;
}

/* 调整列表间距 */
.article-content ul,
.article-content ol {
    line-height: 1.5;
}

/* 调整代码块行高 */
.article-content pre {
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .tutorial-container {
        margin-left: 0;
        margin-right: 0;
    }
    
    .bd-content {
        margin-left: 0;
        padding-left: 0 !important;
        padding-right: 0 !important; /* 移动端移除右侧内边距 */
    }
    
    .tutorial-resources {
        margin-left: 0;
        margin-right: 0;
    }
    
    .page-header.tutorial-page h1 {
        margin-left: 0;
        margin-right: 0;
    }
    
    .tutorial-info {
        margin-left: 0;
        margin-right: 0;
    }
    
    .flex-xl-nowrap {
        flex-wrap: wrap !important;
    }
    
    .bd-sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid rgba(0,0,0,.1);
        margin-bottom: 1rem;
        padding-right: 0; /* 移动端移除右侧内边距 */
    }
    
    .article-content {
        font-size: 0.85rem;
    }
    
    .article-content h1 {
        font-size: 1.3rem;
    }
    
    .article-content h2 {
        font-size: 1.1rem;
    }
    
    .article-content h3 {
        font-size: 1rem;
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .bd-content {
        padding-left: 10px;
        padding-right: 10px; /* 增加右侧内边距，保持对称 */
    }
    
    .tutorial-container {
        margin-left: 0;
        margin-right: 0;
    }
    
    .tutorial-resources {
        margin-left: 0;
        margin-right: 0;
    }
    
    .page-header.tutorial-page h1 {
        margin-left: 0;
        margin-right: 0;
    }
    
    .tutorial-info {
        margin-left: 0;
        margin-right: 0;
    }
}

@media (min-width: 1200px) {
    .bd-content {
        max-width: 700px; /* 进一步调小最大宽度 */
        margin: 0 auto;
        padding-left: 20px; /* 增加左侧内边距 */
        padding-right: 20px; /* 增加右侧内边距，保持对称 */
    }
    
    .tutorial-container {
        margin-left: 0;
        margin-right: 0;
    }
    
    .tutorial-resources {
        margin-left: 0;
        margin-right: 0;
    }
    
    .page-header.tutorial-page h1 {
        margin-left: 0;
        margin-right: 0;
    }
    
    .tutorial-info {
        margin-left: 0;
        margin-right: 0;
    }
}