/* ============================================
   Phone Image Template System
   用于生成手机端分享图片的CSS框架
   渲染宽度540px, html2canvas scale=2 输出1080px
   注意: 仅使用html2canvas兼容的CSS属性
   支持: flexbox, border-radius, box-shadow, background-color,
         font, padding, margin, border, position(relative/absolute/fixed)
   不支持: transform, filter, clip-path, backdrop-filter,
           CSS grid, object-fit, position:sticky, CSS animations
   ============================================ */

/* --- CSS Custom Properties (小红书经典风格) --- */
:root {
    /* 字号 */
    --pi-font-size-base: 14px;
    --pi-font-size-title: 26px;
    --pi-font-size-subtitle: 16px;
    --pi-font-size-small: 12px;
    /* 行高 */
    --pi-line-height: 1.8;
    /* 间距 */
    --pi-spacing: 20px;
    --pi-spacing-sm: 10px;
    --pi-spacing-lg: 30px;
    --pi-spacing-xs: 5px;
    /* 颜色 */
    --pi-color-text: #333333;
    --pi-color-text-light: #666666;
    --pi-color-text-lighter: #999999;
    --pi-color-bg: #ffffff;
    --pi-color-accent: #1890ff;
    --pi-color-border: #eeeeee;
    /* 圆角 */
    --pi-radius: 12px;
    /* 字体 */
    --pi-font-family: 'Source Han Sans', 'SourceHanSans-Normal', sans-serif;
}

/* ============================================
   Base Container
   固定540px宽度的最外层容器
   ============================================ */
.phone-image-container {
    width: 540px;
    background: var(--pi-color-bg);
    color: var(--pi-color-text);
    font-family: var(--pi-font-family);
    font-size: var(--pi-font-size-base);
    line-height: var(--pi-line-height);
    overflow: hidden;
    position: relative;
}

/* ============================================
   Page Container
   每一页的容器, 尺寸由 size class 控制
   ============================================ */
.phone-image-page {
    overflow: hidden;
    box-sizing: border-box;
    position: relative;
}

/* 水印 - 位于每页右下角的半透明文字 */
.page-watermark {
    position: absolute;
    bottom: 60px;
    right: 20px;
    font-size: 12px;
    color: rgba(0, 0, 0, 0.3);
    pointer-events: none;
    white-space: nowrap;
}

/* ============================================
   Size Variants
   两种主流手机图片尺寸
   ============================================ */

/* 小红书尺寸 540x720 (输出1080x1440) */
.size-xiaohongshu .phone-image-page {
    width: 540px;
    height: 720px;
}

/* 抖音尺寸 540x960 (输出1080x1920) */
.size-douyin .phone-image-page {
    width: 540px;
    height: 960px;
}

/* ============================================
   Page Type Variants
   三种页面类型: 封面页/内容页/总结页
   ============================================ */

/* --- 封面页/首页 --- */
.page-cover {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--pi-spacing-lg);
    text-align: center;
}

.page-cover .cover-title {
    font-size: 28px;
    font-weight: normal;
    letter-spacing: 2px;
    line-height: 1.5;
    margin-bottom: var(--pi-spacing);
    color: var(--pi-color-text);
    word-break: break-word;
}

.page-cover .cover-subtitle {
    font-size: var(--pi-font-size-subtitle);
    color: var(--pi-color-text-light);
    margin-bottom: var(--pi-spacing);
}

.page-cover .cover-image {
    width: 100%;
    margin-bottom: var(--pi-spacing);
}

.page-cover .cover-meta {
    font-size: var(--pi-font-size-small);
    color: var(--pi-color-text-lighter);
    margin-top: var(--pi-spacing-sm);
}

/* --- 封面页 - 无封面图装饰排版 --- */
.page-cover.no-cover-image {
    justify-content: center;
    padding: var(--pi-spacing-lg);
}

.page-cover.no-cover-image .cover-decor-line {
    position: absolute;
    left: 30px;
    right: 30px;
    height: 2px;
    background: var(--pi-color-border);
}

.page-cover.no-cover-image .cover-decor-top {
    top: 80px;
}

.page-cover.no-cover-image .cover-decor-bottom {
    bottom: 80px;
}

.page-cover.no-cover-image .cover-no-img-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--pi-spacing) 0;
}

.page-cover.no-cover-image .cover-no-img-title {
    font-size: 36px;
    font-weight: bold;
    line-height: 1.4;
    color: var(--pi-color-text);
    word-break: break-word;
    margin-bottom: var(--pi-spacing);
    padding: 0 20px;
}

.page-cover.no-cover-image .cover-decor-divider {
    width: 60px;
    height: 3px;
    background: var(--pi-color-accent);
    margin-bottom: var(--pi-spacing);
}

.page-cover.no-cover-image .cover-no-img-desc {
    font-size: var(--pi-font-size-subtitle);
    color: var(--pi-color-text-light);
    line-height: 1.8;
    margin-bottom: var(--pi-spacing);
    padding: 0 30px;
    word-break: break-word;
}

.page-cover.no-cover-image .cover-no-img-meta {
    display: flex;
    gap: 15px;
    font-size: var(--pi-font-size-small);
    color: var(--pi-color-text-lighter);
    flex-wrap: wrap;
    justify-content: center;
}

/* --- 内容页图片强制约束 --- */
.page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
    margin: 10px 0;
}

/* --- 内容页 --- */
.page-body {
    display: flex;
    flex-direction: column;
    padding: var(--pi-spacing);
}

/* 内容页 - 页头区域 */
.page-header {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 20px;
}

.page-header .page-title {
    font-size: 20px;
    font-weight: normal;
    letter-spacing: 1px;
    color: #666;
    line-height: 1.4;
    word-break: break-word;
}

.page-header .page-subtitle {
    font-size: var(--pi-font-size-subtitle);
    color: var(--pi-color-text-light);
    margin-top: var(--pi-spacing-sm);
}

/* 内容页 - 正文区域 */
.page-content {
    flex: 1;
    overflow: hidden;
    word-break: break-word;
    line-height: 2.0;
}

.page-content p {
    text-indent: 2em;
    margin-bottom: 16px;
    color: #333;
}

.page-content h2 {
    font-weight: normal;
    font-size: 18px;
    letter-spacing: 1px;
    margin-top: 24px;
    margin-bottom: 12px;
    color: #333;
}

.page-content h3 {
    font-weight: normal;
    font-size: 16px;
    margin-top: 20px;
    margin-bottom: 10px;
    color: #555;
}

.page-content h4 {
    font-size: 14px;
    font-weight: bold;
    margin-top: var(--pi-spacing-sm);
    margin-bottom: 5px;
}

.page-content h5 {
    font-size: 13px;
    font-weight: bold;
    margin-top: var(--pi-spacing-sm);
    margin-bottom: 5px;
}

.page-content h6 {
    font-size: 12px;
    font-weight: bold;
    margin-top: var(--pi-spacing-sm);
    margin-bottom: 5px;
    color: var(--pi-color-text-light);
}

.page-content blockquote {
    border-left: 1px solid #ccc;
    font-style: normal;
    color: #888;
    padding-left: 15px;
    margin: var(--pi-spacing-sm) 0;
}

.page-content ul,
.page-content ol {
    padding-left: var(--pi-spacing);
    margin-bottom: var(--pi-spacing-sm);
}

.page-content li {
    margin-bottom: 5px;
}

/* 内容页 - 页脚区域 */
.page-footer {
    border-top: none;
    padding-top: 0;
    margin-top: var(--pi-spacing-sm);
    font-size: 11px;
    color: #bbb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* --- 总结页/尾页 --- */
.page-summary {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--pi-spacing-lg);
    text-align: center;
}

.page-summary .summary-title {
    font-weight: normal;
    letter-spacing: 2px;
    font-size: 22px;
    margin-bottom: var(--pi-spacing);
    color: var(--pi-color-text);
}

.page-summary .summary-text {
    font-size: var(--pi-font-size-subtitle);
    color: #aaa;
    font-weight: normal;
    margin-bottom: var(--pi-spacing);
    line-height: 1.6;
}

.page-summary .summary-qr {
    margin-bottom: var(--pi-spacing-sm);
}

.page-summary .summary-footer {
    font-size: var(--pi-font-size-small);
    color: #ccc;
}

/* ============================================
   Font Variants
   ============================================ */
.font-source-han-sans {
    --pi-font-family: 'Source Han Sans', 'SourceHanSans-Normal', sans-serif;
}

/* ============================================
   Article Images
   文章内图片样式
   ============================================ */

/* 行内图片, 有边距 */
.article-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: var(--pi-spacing) 0;
}

/* 全宽图片, 无边距 */
.article-image-full {
    width: 100%;
    height: auto;
    display: block;
    margin: 0;
}

/* ============================================
   Page Number Indicator
   页码指示器
   ============================================ */
.page-number-indicator {
    position: absolute;
    bottom: 10px;
    right: 15px;
    font-size: var(--pi-font-size-small);
    color: var(--pi-color-text-lighter);
}

/* ============================================
   Vertical Alignment (逐页对齐)
   ============================================ */
.page-body.valign-center .page-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ============================================
   Content Flow (中间栏内容流)
   所有元素按实际尺寸纵向排列
   ============================================ */
.content-flow {
    width: 540px;
    padding: 20px;
    box-sizing: border-box;
    background: #fff;
    min-height: 100%;
}

.content-flow-block {
    position: relative;
    margin-bottom: 0;
}

.content-flow-block img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- 分页插入区域 --- */
.break-inserter {
    height: 20px;
    border-top: 1px dashed #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2px 0;
    cursor: pointer;
}

.break-inserter:hover {
    border-color: var(--pi-color-accent);
    background: rgba(24, 144, 255, 0.05);
}

.break-inserter-btn {
    opacity: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--pi-color-accent);
    color: #fff;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    border: none;
    cursor: pointer;
    padding: 0;
}

.break-inserter:hover .break-inserter-btn {
    opacity: 1;
}

/* --- 已插入的分页标记 --- */
.page-break-marker {
    height: 30px;
    background: #fff3f3;
    border: 1px dashed #ff4d4f;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 4px 0;
    position: relative;
}

.page-break-marker .break-marker-label {
    font-size: 12px;
    color: #ff4d4f;
    user-select: none;
}

.page-break-marker .remove-break-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    margin-top: -10px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ff4d4f;
    color: #fff;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    border: none;
    cursor: pointer;
    padding: 0;
    opacity: 0;
}

.page-break-marker:hover .remove-break-btn {
    opacity: 1;
}

/* ============================================
   Preview Thumbnails (缩略图容器)
   ============================================ */
.preview-thumbnails {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 20px;
    height: 100%;
    padding: 0 10px;
}

.preview-thumb-item {
    position: relative;
    flex-shrink: 0;
    text-align: center;
}

.preview-thumb-item img {
    display: block;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.preview-thumb-page-num {
    display: block;
    text-align: center;
    font-size: 12px;
    color: #999;
    margin-top: 6px;
}

.thumb-alignment-toggle {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
    opacity: 0;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: #666;
    user-select: none;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: opacity 0.2s;
}

.preview-thumb-item:hover .thumb-alignment-toggle {
    opacity: 1;
}

.thumb-alignment-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
}

.thumb-alignment-toggle.active-center {
    opacity: 1;
    background: rgba(24, 144, 255, 0.15);
    color: #1890ff;
}

/* ============================================
   Content Flow Code Blocks (中间栏代码块样式)
   仅用于编辑区中间栏, 不影响渲染页面
   ============================================ */

/* 表格美化样式（html2canvas兼容） */
.page-content table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 13px; }
.page-content th { background-color: #f0f0f0; font-weight: bold; padding: 8px 10px; border: 1px solid #ddd; text-align: left; }
.page-content td { padding: 8px 10px; border: 1px solid #ddd; }
.page-content tr:nth-child(even) td { background-color: #f9f9f9; }

.content-flow pre {
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 12px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
    margin: 10px 0;
}

.content-flow code {
    font-family: 'Courier New', Consolas, monospace;
    font-size: 13px;
}

.content-flow pre code {
    background: none;
    border: none;
    padding: 0;
}

/* 中间栏表格样式 */
.content-flow-block table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 13px; }
.content-flow-block th { background-color: #f0f0f0; font-weight: bold; padding: 8px 10px; border: 1px solid #ddd; text-align: left; }
.content-flow-block td { padding: 8px 10px; border: 1px solid #ddd; }
.content-flow-block tr:nth-child(even) td { background-color: #f9f9f9; }

/* ============================================
   Page Layout Shell (页面布局外壳)
   两栏布局：左侧编辑器 + 右侧预览
   这些样式替代 phone-image.html 中的 inline style
   ============================================ */

/* --- 顶部操作栏（限定 body > 直接子元素，避免与模板 .page-header 冲突） --- */
body > .page-header {
    background: #fff;
    padding: 10px 20px;
    border-bottom: 1px solid #e8e8e8;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 52px;
    box-sizing: border-box;
    z-index: 100;
    position: relative;
}

body > .page-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

body > .page-header-left h3 {
    margin: 0;
    font-size: 16px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
    color: var(--pi-color-text);
}

body > .page-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 操作栏按钮统一样式 */
body > .page-header-right .layui-btn {
    font-size: 13px;
    border-radius: 2px;
}

body > .page-header-right .layui-btn i {
    font-size: 13px;
    margin-right: 3px;
}

/* 按钮组去掉多余边框 */
body > .page-header-right .layui-btn-group {
    margin: 0;
    vertical-align: middle;
}

body > .page-header-right .layui-btn-group .layui-btn {
    border-radius: 0;
    margin: 0;
}

body > .page-header-right .layui-btn-group .layui-btn:first-child {
    border-radius: 2px 0 0 2px;
}

body > .page-header-right .layui-btn-group .layui-btn:last-child {
    border-radius: 0 2px 2px 0;
}

/* 返回按钮 */
body > .page-header-left .layui-btn-primary:hover {
    color: var(--pi-color-accent);
    border-color: var(--pi-color-accent);
}

/* 主操作按钮 hover */
body > .page-header-right .layui-btn-normal:hover {
    opacity: 0.85;
}

body > .page-header-right .layui-btn:not(.layui-btn-primary):not(.layui-btn-normal):hover {
    opacity: 0.9;
}

/* 更多下拉菜单可读性优化 */
.layui-dropdown-menu {
    min-width: 130px;
    font-size: 13px;
}

.layui-dropdown-menu li {
    padding: 8px 16px;
    cursor: pointer;
    transition: background 0.15s;
}

.layui-dropdown-menu li:hover {
    background: rgba(24, 144, 255, 0.06);
    color: var(--pi-color-accent);
}

.more-dropdown-menu li:hover {
    background: rgba(24, 144, 255, 0.06);
    color: var(--pi-color-accent);
}

/* --- 主布局两栏 --- */
.main-layout {
    display: flex;
    height: calc(100vh - 52px);
}

/* ============================================
   Editor Area (wangeditor 编辑区)
   左侧编辑栏容器与工具栏
   ============================================ */

.content-flow-area {
    width: 540px;
    overflow-y: auto;
    border-right: 1px solid #e8e8e8;
    background: #fafafa;
    flex-shrink: 0;
}

#editor-toolbar {
    width: 540px;
    border-bottom: 1px solid #e8e8e8;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 10;
    box-sizing: border-box;
}

#editor-text-area {
    width: 540px;
    min-height: 300px;
    padding: 10px;
    background: #fff;
    box-sizing: border-box;
}

/* ============================================
   Editor Content Typography (编辑器内排版样式)
   与截图输出区域（staging）的视觉保持一致
   作用域: #editor-text-area 内部元素
   ============================================ */

#editor-text-area {
    font-family: var(--pi-font-family);
    font-size: var(--pi-font-size-base);
    line-height: var(--pi-line-height);
    color: var(--pi-color-text);
}

/* 编辑区标题字号 — 与 .page-content h2~h6 对齐 */
#editor-text-area h1 {
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--pi-color-text);
    line-height: 1.4;
}

#editor-text-area h2 {
    font-weight: normal;
    font-size: 18px;
    letter-spacing: 1px;
    margin-top: 24px;
    margin-bottom: 12px;
    color: #333;
}

#editor-text-area h3 {
    font-weight: normal;
    font-size: 16px;
    margin-top: 20px;
    margin-bottom: 10px;
    color: #555;
}

#editor-text-area h4 {
    font-size: 14px;
    font-weight: bold;
    margin-top: var(--pi-spacing-sm);
    margin-bottom: 5px;
}

#editor-text-area h5 {
    font-size: 13px;
    font-weight: bold;
    margin-top: var(--pi-spacing-sm);
    margin-bottom: 5px;
}

#editor-text-area h6 {
    font-size: 12px;
    font-weight: bold;
    margin-top: var(--pi-spacing-sm);
    margin-bottom: 5px;
    color: var(--pi-color-text-light);
}

/* 编辑区段落 */
#editor-text-area p {
    text-indent: 2em;
    margin-bottom: 16px;
    color: #333;
}

/* 编辑区图片 */
#editor-text-area img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
    margin: 10px 0;
}

/* 编辑区表格 */
#editor-text-area table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 13px;
}

#editor-text-area th {
    background-color: #f0f0f0;
    font-weight: bold;
    padding: 8px 10px;
    border: 1px solid #ddd;
    text-align: left;
}

#editor-text-area td {
    padding: 8px 10px;
    border: 1px solid #ddd;
}

#editor-text-area tr:nth-child(even) td {
    background-color: #f9f9f9;
}

/* 编辑区代码块 */
#editor-text-area pre {
    background: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 12px;
    overflow-x: auto;
    font-size: 13px;
    line-height: 1.6;
    margin: 10px 0;
}

#editor-text-area code {
    font-family: 'Courier New', Consolas, monospace;
    font-size: 13px;
}

#editor-text-area pre code {
    background: none;
    border: none;
    padding: 0;
}

/* 编辑区引用 */
#editor-text-area blockquote {
    border-left: 1px solid #ccc;
    font-style: normal;
    color: #888;
    padding-left: 15px;
    margin: var(--pi-spacing-sm) 0;
}

/* 编辑区列表 */
#editor-text-area ul,
#editor-text-area ol {
    padding-left: var(--pi-spacing);
    margin-bottom: var(--pi-spacing-sm);
}

#editor-text-area li {
    margin-bottom: 5px;
}

/* ============================================
   Divider / 分割线视觉样式 (wangeditor divider)
   在编辑器中显示为分页标记提示
   ============================================ */

/* wangeditor divider 元素 — 虚线分页标记 */
.content-flow-area [data-w-e-type="divider"],
#editor-text-area [data-w-e-type="divider"],
#editor-text-area hr.w-e-textarea-divider,
#editor-text-area hr {
    border: none;
    border-top: 2px dashed var(--pi-color-accent);
    margin: 15px 0;
    padding: 8px 0;
    text-align: center;
    position: relative;
    height: 0;
    background: transparent;
    clear: both;
}

/* 分页标记文字提示（通过 ::after 伪元素）
   注意: wangeditor divider 是 void 元素，::after 可能不生效
   如不生效需在 JS 中插入额外 span 提示元素 */
.content-flow-area [data-w-e-type="divider"]::after,
#editor-text-area [data-w-e-type="divider"]::after,
#editor-text-area hr.w-e-textarea-divider::after,
#editor-text-area hr::after {
    content: '-- 分页标记 --';
    display: inline-block;
    font-size: 12px;
    color: var(--pi-color-accent);
    background: #fafafa;
    padding: 0 10px;
    position: relative;
    top: -8px;
    line-height: 1.8;
}

/* 分割线 hover 高亮（编辑态） */
.content-flow-area [data-w-e-type="divider"]:hover,
#editor-text-area [data-w-e-type="divider"]:hover,
#editor-text-area hr.w-e-textarea-divider:hover,
#editor-text-area hr:hover {
    border-color: #40a9ff;
}

/* ============================================
   Settings Dialog (设置弹框表单样式)
   ============================================ */

.settings-form {
    padding: 20px 20px 0;
}

.settings-form .layui-form-item {
    margin-bottom: 15px;
}

.settings-form .layui-form-label {
    width: 60px;
    font-size: 13px;
    color: var(--pi-color-text-light);
}

.settings-form .layui-input-block {
    margin-left: 90px;
}

.settings-form .layui-input {
    border-radius: 2px;
    font-size: 13px;
}

.settings-form .layui-select {
    border-radius: 2px;
}

.settings-form .layui-form-select dl {
    font-size: 13px;
}

/* ============================================
   Preview Area (右侧预览区域)
   ============================================ */

.paginated-preview-area {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 20px;
    background: #f5f5f5;
}

#paginated-preview {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 20px;
    height: 100%;
    padding: 0 10px;
}