/**
 * 全局样式 - global.css
 * 包含CSS变量、基础样式和布局
 */

/* ==================== CSS变量定义 ==================== */
:root {
    --bg: #ffffff;
    --text: #1f2937;
    --border: #e5e7eb;
    --sidebar-bg: #f9fafb;
    --hover: #f3f4f6;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ==================== 基础样式 ==================== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow: hidden;
}

/* ==================== 布局样式 ==================== */
.app {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    height: 100vh;
    overflow: hidden;
    padding-top: 43px; /* 精确匹配桌面端top-toolbar高度，消除间隙 */
    margin-top: 0;
}

@media (max-width: 768px) {
    .app {
        padding-top: 33px; /* 精确匹配移动端top-toolbar高度 */
    }
}

.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: margin-left 0.3s ease;
    margin-left: 0; /* 重置默认margin */
}

.content {
    flex: 1;
    overflow-y: auto;
    padding: 0px 10px 0px 10px;
    position: relative; /* 为Markdown批注Canvas提供定位基准 */
}

.file-input {
    display: none;
}

/* ==================== Markdown内容样式 ==================== */
.markdown {
    max-width: none;
    line-height: 1.7;
}

.markdown h1, .markdown h2, .markdown h3, .markdown h4, .markdown h5, .markdown h6 {
    margin: 0.6em 0 1em 0;
    line-height: 1.25;
    color: var(--text);
}

.markdown h1 {
    font-size: 2.2em;
    border-bottom: 3px solid var(--border);
    padding-bottom: 0.5em;
}

.markdown h2 {
    font-size: 1.8em;
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.3em;
}

.markdown h3 { font-size: 1.5em; }
.markdown h4 { font-size: 1.3em; }
.markdown h5 { font-size: 1.1em; }
.markdown h6 { font-size: 1em; }

.markdown p {
    margin: 1.2em 0;
}

.markdown ul, .markdown ol {
    margin: 1em 0;
    padding-left: 2em;
}

.markdown li {
    margin: 0.5em 0;
}

.markdown blockquote {
    margin: 1.5em 0;
    padding: 1em 1.5em;
    background: var(--hover);
    border-left: 4px solid var(--primary);
    border-radius: 0 6px 6px 0;
}

.markdown code {
    background: var(--hover);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
}

.markdown pre {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5em;
    overflow-x: auto;
    margin: 1.5em 0;
}

.markdown pre code {
    background: none;
    padding: 0;
    border-radius: 0;
}

.markdown table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.markdown th, .markdown td {
    border: 1px solid var(--border);
    padding: 12px 16px;
    text-align: left;
}

.markdown th {
    background: var(--hover);
    font-weight: 600;
}

.markdown img {
    /* 🔥 图片缩放支持：基于 --img-scale 变量 */
    max-width: calc(100% * var(--img-scale, 1));
    height: auto;
    border-radius: 8px;
    margin: 1em 0;
}

.markdown hr {
    border: none;
    border-top: 2px solid var(--border);
    margin: 2em 0;
}

/* MathJax 样式优化 */
.markdown .MathJax {
    font-size: 1.1em !important;
}

/* 数学公式容器样式优化 */
mjx-container {
    margin: 0.8em 0;
    transition: all 0.2s ease;
    /* 优化渲染性能 */
    will-change: auto;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

mjx-container[display="true"] {
    text-align: center;
    margin: 1.2em 0;
    padding: 0.5em 0;
    border-radius: 8px;
    background: rgba(248, 250, 252, 0.5);
    border: 1px solid rgba(203, 213, 224, 0.3);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* 行内数学公式悬停效果 */
mjx-container[jax="CHTML"][display="false"]:hover {
    background-color: rgba(59, 130, 246, 0.05);
    border-radius: 4px;
    padding: 2px 4px;
}

/* 块级数学公式悬停效果 */
mjx-container[jax="CHTML"][display="true"]:hover {
    background: rgba(248, 250, 252, 0.8);
    border-color: rgba(59, 130, 246, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 数学公式错误提示样式 */
mjx-merror {
    background: #fef2f2 !important;
    color: #dc2626 !important;
    border: 1px solid #fecaca !important;
    border-radius: 4px !important;
    padding: 4px 8px !important;
    font-size: 0.9em !important;
}

/* 数学公式加载动画 */
mjx-container[jax="CHTML"]:empty::before {
    content: "⟳ 加载公式...";
    color: #6b7280;
    font-size: 0.9em;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 数学公式编号样式 */
mjx-container .mjx-tag {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.9em;
    color: #1d4ed8;
}

/* 暗色模式下的数学公式样式 */
@media (prefers-color-scheme: dark) {
    mjx-container[display="true"] {
        background: rgba(31, 41, 55, 0.5);
        border-color: rgba(75, 85, 99, 0.3);
        color: #e5e7eb;
    }

    mjx-container[jax="CHTML"][display="false"]:hover {
        background-color: rgba(96, 165, 250, 0.1);
    }

    mjx-container[jax="CHTML"][display="true"]:hover {
        background: rgba(31, 41, 55, 0.8);
        border-color: rgba(96, 165, 250, 0.3);
    }

    mjx-merror {
        background: rgba(127, 29, 29, 0.3) !important;
        color: #f87171 !important;
        border-color: rgba(239, 68, 68, 0.3) !important;
    }
}

/* 移动端Markdown样式优化 */
@media (max-width: 480px) {
    .markdown {
        font-size: 16px;
        line-height: 1.6;
    }

    .markdown h1 {
        font-size: 1.6em;
        margin: 0.5em 0 0.5em 0;
    }
    .markdown h2 {
        font-size: 1.4em;
        margin: 0.8em 0 0.3em 0;
    }
    .markdown h3 {
        font-size: 1.2em;
        margin: 0.5em 0 0.3em 0;
    }
    .markdown h4 { font-size: 1.1em; }
    .markdown h5 { font-size: 1.05em; }
    .markdown h6 { font-size: 1em; }

    .markdown p {
        margin: 1em 0;
    }

    .markdown ul, .markdown ol {
        padding-left: 1.5em;
        margin: 0.8em 0;
    }

    .markdown li {
        margin: 0.3em 0;
    }

    .markdown blockquote {
        margin: 1em 0;
        padding: 0.8em 1em;
    }

    .markdown table {
        font-size: 14px;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .markdown pre {
        font-size: 14px;
        padding: 12px;
        overflow-x: auto;
    }

    .markdown code {
        font-size: 14px;
        padding: 2px 4px;
    }

    /* 数学公式在手机上的优化 */
    .markdown mjx-container {
        overflow-x: auto;
        overflow-y: hidden;
    }
}

/* Word预览：让内部viewer填满word-container */
#wordContainer {
    position: relative;
    width: 100%;
    height: 100%;
}

#wordViewer,
.word-viewer {
    width: 100% !important;
    height: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    flex: none !important;
    overflow: auto !important;
    background: #ffffff !important;
    display: block !important;
}

#wordContent,
.word-content {
    width: 100% !important;
    height: 100% !important;
    max-width: none !important;
    padding: 0 !important;
    margin: 0 !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    overflow: hidden !important;
}

#wordViewer iframe,
.word-viewer iframe,
#wordContent iframe,
.word-content iframe {
    width: 100% !important;
    height: 100% !important;
    border: none !important;
    display: block !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
}