/* Markdown 内容样式 */
.markdown-body {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 48px;
    font-size: 16px;
    line-height: 1.8;
    word-wrap: break-word;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
}

/* 确保 emoji 正确显示 */
.markdown-body *,
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    font-variant-emoji: emoji;
}

/* 标题 */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-color);
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.2s ease;
    padding: 4px 8px;
    margin-left: -8px;
    border-radius: 4px;
}

.markdown-body h1:hover,
.markdown-body h2:hover,
.markdown-body h3:hover,
.markdown-body h4:hover,
.markdown-body h5:hover,
.markdown-body h6:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .markdown-body h1:hover,
[data-theme="dark"] .markdown-body h2:hover,
[data-theme="dark"] .markdown-body h3:hover,
[data-theme="dark"] .markdown-body h4:hover,
[data-theme="dark"] .markdown-body h5:hover,
[data-theme="dark"] .markdown-body h6:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.markdown-body h1 {
    font-size: 2em;
    padding-bottom: 0.3em;
    border-bottom: 2px solid var(--border-color);
}

.markdown-body h2 {
    font-size: 1.5em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
}

.markdown-body h3 {
    font-size: 1.25em;
}

.markdown-body h4 {
    font-size: 1em;
}

.markdown-body h5 {
    font-size: 0.875em;
}

.markdown-body h6 {
    font-size: 0.85em;
    color: var(--text-muted);
}

/* 段落和文本 */
.markdown-body p {
    margin-top: 0;
    margin-bottom: 16px;
}

.markdown-body strong {
    font-weight: 600;
}

.markdown-body em {
    font-style: italic;
}

.markdown-body del {
    text-decoration: line-through;
    opacity: 0.7;
}

/* 链接 */
.markdown-body a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* 列表 */
.markdown-body ul,
.markdown-body ol {
    padding-left: 2em;
    margin-top: 0;
    margin-bottom: 16px;
}

.markdown-body li {
    margin-bottom: 4px;
}

.markdown-body li + li {
    margin-top: 4px;
}

.markdown-body ul ul,
.markdown-body ul ol,
.markdown-body ol ul,
.markdown-body ol ol {
    margin-top: 4px;
    margin-bottom: 4px;
}

/* 任务列表 */
.markdown-body .task-list-item {
    list-style: none;
    margin-left: -1.5em;
}

.markdown-body .task-list-item input[type="checkbox"] {
    margin-right: 8px;
    vertical-align: middle;
}

/* 引用 */
.markdown-body blockquote {
    margin: 16px 0;
    padding: 12px 20px;
    border-left: 4px solid var(--primary-color);
    background: rgba(74, 144, 217, 0.05);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
}

.markdown-body blockquote > :first-child {
    margin-top: 0;
}

.markdown-body blockquote > :last-child {
    margin-bottom: 0;
}

/* 代码 */
.markdown-body code {
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
    font-size: 0.9em;
    padding: 0.2em 0.4em;
    margin: 0 2px;
    background: var(--bg-color);
    border-radius: 4px;
    color: #e83e8c;
}

[data-theme="dark"] .markdown-body code {
    color: #f97583;
}

.markdown-body pre {
    margin: 16px 0;
    padding: 0;
    overflow: hidden;
    border-radius: 8px;
    background: #1e1e1e;
}

.markdown-body pre code {
    display: block;
    padding: 16px 20px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.6;
    color: #d4d4d4;
    background: transparent;
    margin: 0;
    border-radius: 0;
}

/* 表格 */
.markdown-body table {
    width: 100%;
    margin: 16px 0;
    border-collapse: collapse;
    border-spacing: 0;
    overflow: auto;
}

.markdown-body table th,
.markdown-body table td {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.markdown-body table th {
    font-weight: 600;
    background: var(--bg-color);
}

.markdown-body table tr:nth-child(2n) {
    background: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .markdown-body table tr:nth-child(2n) {
    background: rgba(255, 255, 255, 0.02);
}

/* 水平分割线 */
.markdown-body hr {
    height: 2px;
    padding: 0;
    margin: 24px 0;
    background-color: var(--border-color);
    border: 0;
    border-radius: 1px;
}

/* 图片 */
.markdown-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 16px 0;
    box-shadow: var(--shadow-md);
}

/* 键盘按键 */
.markdown-body kbd {
    display: inline-block;
    padding: 3px 8px;
    font-size: 12px;
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
    line-height: 1.4;
    color: var(--text-color);
    vertical-align: middle;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: inset 0 -1px 0 var(--border-color);
}

/* 定义列表 */
.markdown-body dl {
    padding: 0;
    margin: 16px 0;
}

.markdown-body dl dt {
    padding: 0;
    margin-top: 16px;
    font-weight: 600;
}

.markdown-body dl dd {
    padding: 0 16px;
    margin: 4px 0 16px;
}

/* 脚注 */
.markdown-body .footnotes {
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.875em;
    color: var(--text-secondary);
}

.markdown-body .footnote-ref {
    font-size: 0.75em;
    vertical-align: super;
}

/* 告警/提示框样式 */
.markdown-body .alert {
    padding: 16px 20px;
    margin: 16px 0;
    border-radius: 8px;
    border-left: 4px solid;
}

.markdown-body .alert-info {
    background: rgba(74, 144, 217, 0.1);
    border-color: var(--primary-color);
}

.markdown-body .alert-warning {
    background: rgba(255, 193, 7, 0.1);
    border-color: var(--warning-color);
}

.markdown-body .alert-danger {
    background: rgba(220, 53, 69, 0.1);
    border-color: var(--danger-color);
}

.markdown-body .alert-success {
    background: rgba(40, 167, 69, 0.1);
    border-color: var(--success-color);
}

/* 目录 TOC */
.markdown-body .toc {
    background: var(--bg-color);
    padding: 16px 24px;
    border-radius: 8px;
    margin: 16px 0;
}

.markdown-body .toc-title {
    font-weight: 600;
    margin-bottom: 12px;
}

.markdown-body .toc ul {
    margin: 0;
}

.markdown-body .toc li {
    margin: 4px 0;
}

/* 复选框美化 */
.markdown-body input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 3px;
    background: var(--content-bg);
    cursor: pointer;
    vertical-align: middle;
    position: relative;
}

.markdown-body input[type="checkbox"]:checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.markdown-body input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* 响应式优化 */
@media (max-width: 768px) {
    .markdown-body {
        padding: 20px;
    }
    
    .markdown-body h1 {
        font-size: 1.75em;
    }
    
    .markdown-body h2 {
        font-size: 1.35em;
    }
    
    .markdown-body pre code {
        font-size: 13px;
    }
    
    .markdown-body table {
        display: block;
        overflow-x: auto;
    }
}

/* 打印样式 */
@media print {
    .markdown-body {
        max-width: 100%;
        padding: 0;
    }
    
    .markdown-body pre {
        white-space: pre-wrap;
        word-wrap: break-word;
    }
    
    .markdown-body a {
        color: inherit;
        text-decoration: underline;
    }
}

/* Mermaid 图表样式优化 */
.markdown-body .mermaid {
    text-align: center;
    margin: 24px 0;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: auto;
    max-width: 100%;
}

/* 深色模式下的 Mermaid 优化 */
[data-theme="dark"] .markdown-body .mermaid {
    background: var(--content-bg);
    border-color: var(--border-color);
}

/* Mermaid SVG 容器 */
.markdown-body .mermaid svg {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* 大型图表支持横向滚动 */
.markdown-body .mermaid.large-diagram {
    overflow-x: auto;
    overflow-y: hidden;
}

/* 图表加载状态 */
.markdown-body .mermaid[data-processed="false"] {
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.markdown-body .mermaid[data-processed="false"]::before {
    content: '正在渲染图表...';
    font-size: 14px;
}

/* 图表错误状态 */
.markdown-body .mermaid.error {
    background: rgba(220, 53, 69, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-color);
    padding: 20px;
    text-align: left;
}

.markdown-body .mermaid.error::before {
    content: '⚠️ 图表渲染失败';
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

/* Mermaid 图表缩放功能 */
.markdown-body .mermaid {
    cursor: zoom-in;
    transition: var(--transition);
}

.markdown-body .mermaid:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Mermaid 错误提示样式 */
.mermaid-error {
    margin: 24px 0;
    padding: 20px;
    background: #fff5f5;
    border: 2px solid #fc8181;
    border-radius: 8px;
    color: #c53030;
}

[data-theme="dark"] .mermaid-error {
    background: #2d1b1b;
    border-color: #fc8181;
    color: #feb2b2;
}

.mermaid-error-content {
    text-align: left;
}

.mermaid-error-content i {
    font-size: 24px;
    margin-right: 8px;
    vertical-align: middle;
}

.mermaid-error-content h4 {
    display: inline-block;
    margin: 0 0 12px 0;
    font-size: 18px;
    color: inherit;
}

.mermaid-error-content p {
    margin: 8px 0;
    font-family: monospace;
    font-size: 14px;
    white-space: pre-wrap;
    word-break: break-word;
}

.mermaid-error-content details {
    margin-top: 16px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

[data-theme="dark"] .mermaid-error-content details {
    background: rgba(255, 255, 255, 0.05);
}

.mermaid-error-content summary {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 8px;
    user-select: none;
}

.mermaid-error-content summary:hover {
    text-decoration: underline;
}

.mermaid-error-content pre {
    margin: 8px 0 0 0;
    padding: 12px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    overflow-x: auto;
}

[data-theme="dark"] .mermaid-error-content pre {
    background: rgba(255, 255, 255, 0.1);
}

.mermaid-error-content code {
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    font-size: 13px;
    line-height: 1.5;
}

.mermaid-error-content .hint {
    margin-top: 12px;
    padding: 8px 12px;
    background: rgba(66, 153, 225, 0.1);
    border-left: 3px solid #4299e1;
    border-radius: 4px;
    color: #2c5282;
    font-size: 13px;
}

[data-theme="dark"] .mermaid-error-content .hint {
    background: rgba(66, 153, 225, 0.2);
    color: #90cdf4;
}

/* 图表缩放模态框 */
.diagram-zoom-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.diagram-zoom-modal.show {
    display: flex;
}

.diagram-zoom-modal .zoom-content {
    position: relative;
    width: 98vw;
    height: 95vh;
    max-width: 98vw;
    max-height: 95vh;
    background: var(--content-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    overflow: hidden; /* 改为 hidden，防止滚动条 */
    animation: zoomIn 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab; /* 默认显示抓取光标 */
    user-select: none; /* 防止拖动时选中文字 */
}

.diagram-zoom-modal .zoom-content:active {
    cursor: grabbing; /* 拖动时显示抓取中光标 */
}

.diagram-zoom-modal .zoom-diagram {
    display: block;
    width: auto;
    height: auto;
    max-width: none;
    max-height: none;
    pointer-events: none; /* 防止图表内部元素干扰拖动 */
    transition: transform 0.1s ease-out; /* 平滑的变换动画 */
    transform-origin: center center;
}

.diagram-zoom-modal .zoom-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 10001;
}

.diagram-zoom-modal .zoom-close:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: rotate(90deg);
}

.diagram-zoom-modal .zoom-controls {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    background: rgba(0, 0, 0, 0.6);
    padding: 12px 20px;
    border-radius: 30px;
    backdrop-filter: blur(10px);
    z-index: 10001;
}

.diagram-zoom-modal .zoom-controls button {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.diagram-zoom-modal .zoom-controls button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

.diagram-zoom-modal .zoom-controls .zoom-level {
    color: white;
    font-size: 14px;
    padding: 0 15px;
    display: flex;
    align-items: center;
    min-width: 60px;
    justify-content: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==================== PlantUML 图表样式 ==================== */
.markdown-body .plantuml {
    text-align: center;
    margin: 24px 0;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: auto;
    max-width: 100%;
    cursor: zoom-in;
    transition: var(--transition);
}

.markdown-body .plantuml:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 深色模式下的 PlantUML 优化 */
[data-theme="dark"] .markdown-body .plantuml {
    background: var(--content-bg);
    border-color: var(--border-color);
}

/* 深色模式下 PlantUML 图片添加白色背景，确保线条可见 */
[data-theme="dark"] .markdown-body .plantuml img.plantuml-diagram {
    background: #ffffff;
    border-radius: 4px;
    padding: 10px;
}

/* PlantUML 图片样式 */
.markdown-body .plantuml img.plantuml-diagram {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* PlantUML 加载状态 */
.markdown-body .plantuml .plantuml-loading {
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 14px;
    gap: 8px;
}

.markdown-body .plantuml .plantuml-loading i {
    font-size: 18px;
}

/* PlantUML 错误状态 */
.markdown-body .plantuml .plantuml-error {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid var(--danger-color);
    border-radius: 6px;
    color: var(--danger-color);
    padding: 16px;
    text-align: left;
}

.markdown-body .plantuml .plantuml-error i {
    margin-right: 8px;
}

.markdown-body .plantuml .plantuml-error details {
    margin-top: 12px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
}

[data-theme="dark"] .markdown-body .plantuml .plantuml-error details {
    background: rgba(255, 255, 255, 0.05);
}

.markdown-body .plantuml .plantuml-error summary {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 8px;
    user-select: none;
}

.markdown-body .plantuml .plantuml-error pre {
    margin: 8px 0 0 0;
    padding: 10px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
    overflow-x: auto;
    font-size: 12px;
    white-space: pre-wrap;
    word-break: break-word;
}

[data-theme="dark"] .markdown-body .plantuml .plantuml-error pre {
    background: rgba(255, 255, 255, 0.05);
}