/* Article Content */
.article-content {
    max-width: 700px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 3rem;
}

.article-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.article-meta {
    color: var(--text-light);
    font-size: 0.95rem;
}

.article-body {
    font-family: var(--font-sans);
    line-height: 1.8;
}

.article-body h2,
.article-body h3,
.article-body h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body a {
    color: var(--primary-color);
    text-decoration: none;
}

.article-body a:hover {
    text-decoration: underline;
}

.article-body code {
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.article-body pre {
    background-color: #2d2d2d;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    border: 1px solid #444;
    position: relative;
}

.article-body pre code {
    background: none;
    padding: 0;
    color: #f8f8f2;
}

/* Codehilite 代码块容�*/
.article-body .codehilite {
    background-color: #2d2d2d;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    border: 1px solid #444;
    position: relative;
}

.article-body .codehilite pre {
    margin: 0;
    padding: 1.5rem;
    background: transparent;
    border: none;
}

/* 代码块复制按�*/
.copy-button {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 12px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #a0a0a0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
    z-index: 10;
}

.codehilite:hover .copy-button,
.article-body pre:hover .copy-button {
    opacity: 1;
}

.copy-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: #f0f0f0;
}

.copy-button.copied {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* ===== Pygments 语法高亮 (Monokai 风格) ===== */
.codehilite .hll {
    background-color: #49483e
}

.codehilite .c {
    color: #75715e
}

/* Comment */
.codehilite .err {
    color: #f92672
}

/* Error */
.codehilite .k {
    color: #66d9ef;
    font-weight: bold
}

/* Keyword */
.codehilite .l {
    color: #ae81ff
}

/* Literal */
.codehilite .n {
    color: #f8f8f2
}

/* Name */
.codehilite .o {
    color: #f92672
}

/* Operator */
.codehilite .p {
    color: #f8f8f2
}

/* Punctuation */
.codehilite .ch {
    color: #75715e
}

/* Comment.Hashbang */
.codehilite .cm {
    color: #75715e
}

/* Comment.Multiline */
.codehilite .cp {
    color: #75715e
}

/* Comment.Preproc */
.codehilite .cpf {
    color: #75715e
}

/* Comment.PreprocFile */
.codehilite .c1 {
    color: #75715e
}

/* Comment.Single */
.codehilite .cs {
    color: #75715e
}

/* Comment.Special */
.codehilite .gd {
    color: #f92672
}

/* Generic.Deleted */
.codehilite .ge {
    font-style: italic
}

/* Generic.Emph */
.codehilite .gi {
    color: #a6e22e
}

/* Generic.Inserted */
.codehilite .gs {
    font-weight: bold
}

/* Generic.Strong */
.codehilite .gu {
    color: #75715e
}

/* Generic.Subheading */
.codehilite .kc {
    color: #66d9ef
}

/* Keyword.Constant */
.codehilite .kd {
    color: #66d9ef
}

/* Keyword.Declaration */
.codehilite .kn {
    color: #f92672
}

/* Keyword.Namespace */
.codehilite .kp {
    color: #66d9ef
}

/* Keyword.Pseudo */
.codehilite .kr {
    color: #66d9ef
}

/* Keyword.Reserved */
.codehilite .kt {
    color: #66d9ef
}

/* Keyword.Type */
.codehilite .ld {
    color: #e6db74
}

/* Literal.Date */
.codehilite .m {
    color: #ae81ff
}

/* Literal.Number */
.codehilite .s {
    color: #e6db74
}

/* Literal.String */
.codehilite .na {
    color: #a6e22e
}

/* Name.Attribute */
.codehilite .nb {
    color: #f8f8f2
}

/* Name.Builtin */
.codehilite .nc {
    color: #a6e22e
}

/* Name.Class */
.codehilite .no {
    color: #66d9ef
}

/* Name.Constant */
.codehilite .nd {
    color: #a6e22e
}

/* Name.Decorator */
.codehilite .ni {
    color: #f8f8f2
}

/* Name.Entity */
.codehilite .ne {
    color: #a6e22e
}

/* Name.Exception */
.codehilite .nf {
    color: #a6e22e
}

/* Name.Function */
.codehilite .nl {
    color: #f8f8f2
}

/* Name.Label */
.codehilite .nn {
    color: #f8f8f2
}

/* Name.Namespace */
.codehilite .nx {
    color: #a6e22e
}

/* Name.Other */
.codehilite .py {
    color: #f8f8f2
}

/* Name.Property */
.codehilite .nt {
    color: #f92672
}

/* Name.Tag */
.codehilite .nv {
    color: #f8f8f2
}

/* Name.Variable */
.codehilite .ow {
    color: #f92672
}

/* Operator.Word */
.codehilite .w {
    color: #f8f8f2
}

/* Text.Whitespace */
.codehilite .mb {
    color: #ae81ff
}

/* Literal.Number.Bin */
.codehilite .mf {
    color: #ae81ff
}

/* Literal.Number.Float */
.codehilite .mh {
    color: #ae81ff
}

/* Literal.Number.Hex */
.codehilite .mi {
    color: #ae81ff
}

/* Literal.Number.Integer */
.codehilite .mo {
    color: #ae81ff
}

/* Literal.Number.Oct */
.codehilite .sa {
    color: #e6db74
}

/* Literal.String.Affix */
.codehilite .sb {
    color: #e6db74
}

/* Literal.String.Backtick */
.codehilite .sc {
    color: #e6db74
}

/* Literal.String.Char */
.codehilite .dl {
    color: #e6db74
}

/* Literal.String.Delimiter */
.codehilite .sd {
    color: #e6db74
}

/* Literal.String.Doc */
.codehilite .s2 {
    color: #e6db74
}

/* Literal.String.Double */
.codehilite .se {
    color: #ae81ff
}

/* Literal.String.Escape */
.codehilite .sh {
    color: #e6db74
}

/* Literal.String.Heredoc */
.codehilite .si {
    color: #e6db74
}

/* Literal.String.Interpol */
.codehilite .sx {
    color: #e6db74
}

/* Literal.String.Other */
.codehilite .sr {
    color: #e6db74
}

/* Literal.String.Regex */
.codehilite .s1 {
    color: #e6db74
}

/* Literal.String.Single */
.codehilite .ss {
    color: #e6db74
}

/* Literal.String.Symbol */
.codehilite .bp {
    color: #f8f8f2
}

/* Name.Builtin.Pseudo */
.codehilite .fm {
    color: #a6e22e
}

/* Name.Function.Magic */
.codehilite .vc {
    color: #f8f8f2
}

/* Name.Variable.Class */
.codehilite .vg {
    color: #f8f8f2
}

/* Name.Variable.Global */
.codehilite .vi {
    color: #f8f8f2
}

/* Name.Variable.Instance */
.codehilite .vm {
    color: #f8f8f2
}

/* Name.Variable.Magic */
.codehilite .il {
    color: #ae81ff
}

/* Literal.Number.Integer.Long */

/* Blockquote - 引用样式 */
.article-body blockquote {
    margin: 1rem 0;
    padding: 0.5rem 1rem;
    border-left: 3px solid var(--border-color);
    color: var(--text-light);
}

.article-body blockquote p {
    margin-bottom: 0.5rem;
}

.article-body blockquote p:last-child {
    margin-bottom: 0;
}

/* Lists - 列表样式 */
.article-body ul,
.article-body ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.article-body ul li,
.article-body ol li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.article-body ul ul,
.article-body ol ol,
.article-body ul ol,
.article-body ol ul {
    margin: 0.5rem 0;
}

/* Horizontal Rule - 水平线样�*/
.article-body hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 2rem 0;
}

.article-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 2rem auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.article-body img:hover {
    transform: scale(1.02);
}

/* ===== 可折叠侧边目录 (Table of Contents) ===== */

/* 文章容器 - 单栏布局，文章居中自适应 */
.article-with-toc {
    display: block;
    max-width: 850px;
    margin: 0 auto;
    padding: 0 20px;
}

.article-with-toc .article-content {
    max-width: 100%;
    margin: 0;
}

/* 侧边目录容器 - 固定在右侧 */
.toc-sidebar {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%) translateX(280px);
    /* Default collpased: Shift right by panel width */
    z-index: 100;
    display: flex;
    align-items: flex-start;
    font-family: var(--font-sans);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.toc-sidebar.expanded {
    transform: translateY(-50%) translateX(0);
    /* Expanded: Shift back to normal */
}

/* 目录切换按钮 */
.toc-toggle {
    width: 24px;
    /* Even narrower */
    height: 50px;
    /* Taller, like a tab */
    margin-top: 20px;
    /* Push down to avoid panel corner radius */
    margin-right: -1px;
    /* Overlap panel border */
    background: rgba(255, 255, 255, 0.95);
    /* Match panel exactly */
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 6px 0 0 6px;
    /* Slightly tighter radius */
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.05);
    /* Left-only shadow */
    position: relative;
    z-index: 101;
    /* Above panel */
}

.toc-toggle:hover {
    background: white;
    color: var(--primary-color);
    width: 28px;
    box-shadow: -3px 0 12px rgba(0, 0, 0, 0.08);
}

.toc-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.toc-sidebar.expanded .toc-toggle svg {
    transform: rotate(180deg);
}

/* 目录内容面板 */
.toc-panel {
    width: 280px;
    max-height: 75vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 12px 0 0 12px;
    box-shadow: -8px 8px 24px rgba(0, 0, 0, 0.08);
    /* Deeper shadow */
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 100;
}

.toc-sidebar.expanded .toc-panel {
    opacity: 1;
    pointer-events: auto;
}

.toc-nav {
    padding: 1.5rem;
    max-height: 75vh;
    overflow-y: auto;
    /* Custom scrollbar for TOC */
    scrollbar-width: thin;
    scrollbar-color: #e5e7eb transparent;
}

.toc-title {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid #f3f4f6;
}

/* 目录列表 */
.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

/* 根据标题层级缩进 */
.toc-item.toc-h3 {
    padding-left: 1rem;
}

.toc-item.toc-h4 {
    padding-left: 2rem;
}

/* 目录链接 */
.toc-link {
    display: block;
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    color: var(--text-light);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
    line-height: 1.5;
    position: relative;
}

.toc-link:hover {
    color: var(--primary-color);
    background-color: rgba(114, 184, 136, 0.08);
}

/* 高亮状态 */
.toc-link.active {
    color: var(--primary-color);
    font-weight: 600;
    background-color: rgba(114, 184, 136, 0.12);
}

.toc-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 16px;
    width: 3px;
    background-color: var(--primary-color);
    border-radius: 0 2px 2px 0;
}


/* 无目录时的布局 */
.article-with-toc.no-toc {
    display: block;
    max-width: 850px;
}

.article-with-toc.no-toc .article-content {
    max-width: 100%;
    margin: 0;
}

/* 响应式：小屏幕隐藏侧边栏 */
@media (max-width: 768px) {
    .toc-sidebar {
        display: none;
    }
}