/*
 * 作者：必弘
 * 邮箱：bihong@qq.com
 * 法律说明：仅授权在「通过 storyplat.com 访问」时使用，禁止未授权再分发、商用等。
 */
/* ========== 基础与变量（风格：简洁、温暖、绿色点缀） ========== */
:root {
  --bg: #f5f4f0;
  --bg-editor: #fff;
  --bg-toolbar: #fafaf8;
  --border: #e8e6e1;
  --border-strong: #ddd9d2;
  --text: #37352f;
  --text-muted: #6b6560;
  --accent: #2d8a5e;
  --accent-hover: #247a52;
  --accent-soft: rgba(45, 138, 94, 0.12);
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "Consolas", "Monaco", "Courier New", monospace;
  --radius: 6px;
  --radius-lg: 8px;
  --shadow: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-drop: 0 4px 16px rgba(0,0,0,0.1);
  --header-h: 90px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* SEO：仅对爬虫/读屏可见，页面不占位 */
.seo-title,
.seo-intro {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* 状态栏：字数、段落、行数、阅读进度 */
.app-status-bar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px 6px 18px;
  font-size: 12px;
  line-height: 1.35;
  color: var(--text-muted);
  background: var(--bg-toolbar);
  border-top: 1px solid var(--border);
  min-height: 26px;
  box-sizing: border-box;
  overflow: visible;
}
.app-status-bar .status-sep { opacity: 0.6; }
.app-status-bar > span:first-child { padding-left: 2px; margin-left: 0; }

/* 工信部备案号：主界面底部，可点击跳转备案查询网站 */
.app-icp-footer {
  flex-shrink: 0;
  padding: 4px 18px 8px;
  font-size: 12px;
  line-height: 1.3;
  background: var(--bg-toolbar);
  border-top: 1px solid var(--border);
}
.app-icp-footer a {
  color: var(--text-muted);
  text-decoration: none;
}
.app-icp-footer a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* 全屏模式：仅隐藏浏览器 UI，应用内菜单/工具栏/编辑区/状态栏全部保留，整应用占满屏幕 */
body.fullscreen-editor,
html:fullscreen body,
html:-webkit-full-screen body,
html:-moz-full-screen body,
html:-ms-fullscreen body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
body.fullscreen-editor #app,
html:fullscreen body #app,
html:-webkit-full-screen body #app,
html:-moz-full-screen body #app,
html:-ms-fullscreen body #app {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
}
.fullscreen-exit-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 6px 12px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 12px;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transform: translateY(-100%);
  transition: transform 0.2s ease-out;
}
body.fullscreen-editor .fullscreen-exit-bar {
  display: flex !important;
  transform: translateY(-100%);
}
body.fullscreen-editor .fullscreen-exit-bar.fullscreen-exit-bar-visible {
  transform: translateY(0);
}
.fullscreen-exit-bar .fullscreen-exit-btn {
  padding: 6px 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
}
.fullscreen-exit-bar .fullscreen-exit-btn:hover { background: var(--accent-hover); }

/* ========== 顶部菜单栏（风格：简洁顶栏） ========== */
.app-header {
  flex-shrink: 0;
  background: var(--bg-editor);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  z-index: 100;
}

.menu-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
}

.menu-group {
  display: flex;
  gap: 2px;
}

.menu-btn {
  padding: 6px 12px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.menu-btn:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.doc-title {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  max-width: 40%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========== 协作状态栏（邀请码/链接持久展示 + 退出） ========== */
.collab-status-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(34, 139, 34, 0.08) 0%, rgba(34, 139, 34, 0.04) 100%);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}

.collab-status-bar[aria-hidden="true"] {
  display: none !important;
}

.collab-status-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent);
  font-weight: 600;
}

.collab-status-icon {
  color: var(--accent);
  font-size: 10px;
}

.collab-invite-row {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.collab-invite-btn {
  padding: 4px 10px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: background 0.15s ease, color 0.15s ease;
}

.collab-invite-btn:hover {
  background: var(--accent);
  color: #fff;
}

.collab-invite-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.collab-invite-label {
  color: var(--text-muted);
  font-size: 11px;
}

.collab-invite-code {
  padding: 2px 6px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}

.collab-invite-link {
  width: 180px;
  max-width: 40vw;
  padding: 2px 6px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text);
}

.collab-copy-btn {
  padding: 2px 6px;
  border: none;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition: background 0.15s ease;
}

.collab-copy-btn:hover {
  background: var(--accent);
  color: #fff;
}

.collab-copy-btn:active {
  transform: scale(0.96);
}

.collab-status-taskname {
  margin-left: 6px;
  font-weight: 600;
  color: var(--accent);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collab-status-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 4px;
}

.collab-status-extra-btn {
  padding: 2px 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: var(--radius);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.collab-status-extra-btn:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}

.collab-joined-only {
  color: var(--text-muted);
  font-size: 12px;
}

.collab-exit-btn {
  margin-left: auto;
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.collab-exit-btn:hover {
  background: rgba(200, 60, 60, 0.1);
  color: #c0392b;
  border-color: rgba(200, 60, 60, 0.3);
}

.collab-nickname-input,
.collab-taskname-input {
  max-width: 280px;
}

.collab-history-list {
  margin: 0 0 16px 0;
  padding: 0;
  list-style: none;
  max-height: 50vh;
  overflow-y: auto;
}

.collab-history-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.collab-history-list li:last-child {
  border-bottom: none;
}

.collab-history-item-info {
  flex: 1;
  min-width: 0;
}

.collab-history-item-title {
  font-weight: 600;
  color: var(--text);
}

.collab-history-item-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.collab-history-reenter-btn {
  padding: 4px 12px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius);
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
}

.collab-history-reenter-btn:hover {
  background: var(--accent);
  color: #fff;
}

.collab-history-reenter-btn:disabled,
.collab-history-invalid {
  opacity: 0.6;
  cursor: default;
}

.collab-history-empty {
  color: var(--text-muted);
  margin: 16px 0;
}

.collab-room-panel {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding: 10px 16px 12px;
  background: var(--bg-editor);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}

.collab-room-section {
  flex: 1;
  min-width: 200px;
}

.collab-room-section-title {
  margin: 0 0 6px 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.collab-participants-list,
.collab-log-list {
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: 160px;
  overflow-y: auto;
}

.collab-participants-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
}

.collab-participants-list li:last-child {
  border-bottom: none;
}

.collab-participant-info {
  flex: 1;
  min-width: 0;
}

.collab-participant-name {
  font-weight: 600;
  color: var(--text);
}

.collab-participant-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.collab-kick-btn {
  padding: 2px 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius);
  font-size: 11px;
  cursor: pointer;
  flex-shrink: 0;
}

.collab-kick-btn:hover {
  background: rgba(200, 60, 60, 0.1);
  color: #c0392b;
  border-color: rgba(200, 60, 60, 0.3);
}

.collab-log-list li {
  padding: 2px 0;
  font-size: 11px;
  color: var(--text-muted);
  border-bottom: none;
}

/* ========== 工具栏（风格：分组清晰、绿色高亮） ========== */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  gap: 12px;
  flex-wrap: wrap;
  background: var(--bg-editor);
}

.tool-group {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.tool-btn {
  padding: 6px 11px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.tool-btn:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.tool-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 6px;
  border-radius: 1px;
}

.view-toggle {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-toolbar);
}

.view-btn {
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.view-btn:hover {
  background: rgba(0,0,0,0.04);
  color: var(--text);
}

.view-btn.active {
  background: var(--accent);
  color: #fff;
}

/* ========== 左侧悬浮大纲（固定于视口左侧，不占文档流，不挤占主内容） ========== */
.outline-wrapper {
  position: fixed;
  top: var(--header-h, 90px);
  left: 0;
  right: auto;
  bottom: 0;
  width: 0;
  height: auto;
  margin: 0;
  padding: 0;
  z-index: 150;
  overflow: visible;
  pointer-events: none;
  /* 脱离文档流，不参与 #app 的 flex，避免与主内容形成上下结构 */
}
.outline-wrapper > * {
  pointer-events: auto;
}
.outline-wrapper.panel-open {
  width: 0;
}
.outline-trigger {
  position: fixed;
  top: calc(var(--header-h, 90px) + 12px);
  left: 0;
  right: auto;
  width: 20px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-toolbar);
  border: 1px solid var(--border);
  border-left: none;
  border-radius: 0 6px 6px 0;
  box-shadow: var(--shadow);
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  writing-mode: vertical-rl;
  letter-spacing: 2px;
  user-select: none;
  z-index: 151;
}
.outline-trigger:hover {
  background: var(--accent-soft);
  color: var(--accent);
}
.outline-panel {
  position: fixed;
  top: var(--header-h, 90px);
  left: 20px;
  right: auto;
  bottom: 0;
  width: 200px;
  max-width: 55vw;
  height: calc(100vh - var(--header-h, 90px));
  margin: 0;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-left: none;
  box-shadow: var(--shadow-md);
  z-index: 150;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.2s ease;
  overflow: hidden;
  /* 悬浮在内容之上，不挤占编辑/预览区域 */
}
.outline-panel.show {
  transform: translateX(0);
}
.outline-panel-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-toolbar);
}
.outline-panel-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
}
.outline-panel-close {
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.outline-panel-close:hover {
  background: rgba(0,0,0,0.08);
  color: var(--text);
}
.outline-panel-close:active {
  background: rgba(0,0,0,0.12);
}
.outline-panel-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 10px 0;
}
.outline-list {
  list-style: none;
  margin: 0;
  padding: 0 8px;
}
.outline-list li {
  margin: 0;
  padding: 2px 0;
}
.outline-list a {
  display: block;
  padding: 4px 8px;
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  border-radius: var(--radius);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.outline-list a:hover {
  background: var(--accent-soft);
  color: var(--accent);
}
.outline-list .outline-level-1 { padding-left: 0; font-weight: 600; }
.outline-list .outline-level-2 { padding-left: 12px; font-size: 12.5px; }
.outline-list .outline-level-3 { padding-left: 24px; font-size: 12px; }
.outline-list .outline-level-4,
.outline-list .outline-level-5,
.outline-list .outline-level-6 { padding-left: 32px; font-size: 12px; }

/* ========== 主内容区 ========== */
.main-content {
  flex: 1;
  display: flex;
  min-height: 0;
  position: relative;
}

.editor-pane {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  transition: flex 0.2s ease;
  background: var(--bg-editor);
}
.editor-pane #editor {
  flex: 1;
  min-height: 0;
  resize: none;
}
.preview-pane {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  transition: flex 0.2s ease;
  background: var(--bg-editor);
}
.preview-pane .preview-inner {
  flex: 1;
  min-height: 0;
  min-width: 0;
  overflow: auto;
}

/* 仅编辑模式：编辑区全屏 */
.main-content.view-edit .editor-pane {
  flex: 1 1 100%;
  min-width: 0;
  width: 100%;
}
.main-content.view-edit .resizer,
.main-content.view-edit .preview-pane {
  display: none !important;
}

/* 仅预览模式：预览区全屏 */
.main-content.view-preview .editor-pane,
.main-content.view-preview .resizer {
  display: none !important;
}
.main-content.view-preview .preview-pane {
  flex: 1 1 100%;
  min-width: 0;
  width: 100%;
}
.main-content.view-preview .preview-inner {
  max-width: none;
  width: 100%;
}
.main-content.view-preview .markdown-body {
  padding-right: 0;
}

/* 分屏模式 */
.main-content.view-split .editor-pane {
  flex: 1;
  min-width: 120px;
}
.main-content.view-split .resizer {
  width: 8px;
  flex-shrink: 0;
  cursor: col-resize;
  background: var(--border);
  transition: background 0.15s ease;
}
.main-content.view-split .resizer:hover {
  background: var(--accent);
  opacity: 0.6;
}
.main-content.view-split .preview-pane {
  flex: 1;
  min-width: 120px;
}

#editor {
  width: 100%;
  height: 100%;
  min-height: 100%;
  padding: 28px 24px;
  border: none;
  resize: none;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg-editor);
  outline: none;
  caret-color: var(--accent);
  box-sizing: border-box;
}

/* 协作者光标/选区：状态条 + 选区高亮 */
.collab-cursor-strip {
  flex-shrink: 0;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-editor);
  border-bottom: 1px solid var(--border);
}
.collab-cursor-strip .collab-cursor-user {
  margin-right: 12px;
}
.collab-cursor-overlay {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
  overflow: hidden;
}
.collab-cursor-overlay .collab-selection {
  position: absolute;
  background: rgba(34, 139, 34, 0.15);
  border-left: 2px solid var(--accent);
}
.collab-cursor-overlay .collab-cursor-caret {
  position: absolute;
  width: 2px;
  background: var(--accent);
}

.preview-inner {
  padding: 28px 24px;
  max-width: none;
  width: 100%;
  box-sizing: border-box;
  background: var(--bg-editor);
}

.markdown-body.preview-editable {
  cursor: text;
  outline: none;
  min-height: 200px;
}
.markdown-body.preview-editable:focus {
  outline: none;
}

/* ========== 预览区选中浮动菜单 ========== */
.preview-float-menu {
  display: none;
  position: fixed;
  z-index: 1500;
  background: var(--bg-editor);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-drop);
  padding: 6px 8px;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  max-width: 90vw;
}
.preview-float-menu.show {
  display: flex;
}
.preview-float-menu .float-menu-btn {
  padding: 6px 10px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  border-radius: 3px;
  font-size: 13px;
}
.preview-float-menu .float-menu-btn:hover {
  background: var(--bg-toolbar);
}
.preview-float-menu .float-menu-btn[data-action="bold"] { font-weight: 700; }
.preview-float-menu .float-menu-btn[data-action="italic"] { font-style: italic; }
.preview-float-menu .float-menu-btn[data-action="strike"] { text-decoration: line-through; }
.preview-float-menu .float-menu-btn[data-action="underline"] { text-decoration: underline; }
.preview-float-menu .float-menu-btn[data-action="sup"] { font-size: 0.85em; vertical-align: super; }
.preview-float-menu .float-menu-btn[data-action="sub"] { font-size: 0.85em; vertical-align: sub; }
.preview-float-menu .float-menu-btn[data-action="code"] { font-family: var(--font-mono); font-size: 0.9em; }
.preview-float-menu .float-menu-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 2px;
}
.preview-float-menu .float-menu-drop {
  position: relative;
}
.preview-float-menu .float-menu-drop-content {
  display: none !important;
  position: absolute;
  left: 0;
  top: 100%;
  margin-top: 2px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  padding: 8px;
  min-width: 100px;
  z-index: 1501;
}
.preview-float-menu .float-menu-drop-content.show {
  display: block !important;
}
.preview-float-menu .float-menu-drop-content#floatMenuFormat,
.preview-float-menu .float-menu-drop-content#floatMenuTitleList,
.preview-float-menu .float-menu-drop-content#floatMenuInsert,
.preview-float-menu .float-menu-drop-content#floatMenuAi {
  min-width: 120px;
}
/* 颜色/背景面板：默认不展示，仅点击对应下拉时展示；网格 n×m 排列，点哪个出哪个 */
.preview-float-menu .float-menu-drop-content#floatMenuColor {
  grid-template-columns: repeat(6, 24px);
  gap: 6px;
  min-width: auto;
  width: max-content;
  max-width: 168px;
}
.preview-float-menu .float-menu-drop-content#floatMenuBg {
  grid-template-columns: repeat(4, 24px);
  gap: 6px;
  min-width: auto;
  width: max-content;
  max-width: 120px;
}
.preview-float-menu .float-menu-drop-content#floatMenuColor.show,
.preview-float-menu .float-menu-drop-content#floatMenuBg.show {
  display: grid !important;
}
.preview-float-menu .float-menu-drop-content#floatMenuColor button,
.preview-float-menu .float-menu-drop-content#floatMenuBg button {
  width: 24px;
  height: 24px;
  min-width: 24px;
  padding: 0;
  border-radius: 4px;
  border: 1px solid rgba(0,0,0,0.15);
  flex-shrink: 0;
  display: block;
}
.preview-float-menu .float-menu-drop-content#floatMenuColor button:hover,
.preview-float-menu .float-menu-drop-content#floatMenuBg button:hover {
  transform: scale(1.1);
  border-color: var(--accent);
}
.preview-float-menu .float-menu-drop-content button {
  display: block;
  width: 100%;
  padding: 6px 10px;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-size: 12px;
  border-radius: 3px;
}
.preview-float-menu .float-menu-drop-content button:hover { background: var(--bg-toolbar); }

/* ========== AI 建议块操作条：贴在输入框底部边框 ========== */
.ai-suggestion-bar {
  display: none;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-toolbar);
  border-top: 2px solid var(--accent);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  box-shadow: 0 -2px 8px var(--accent-soft);
}
.ai-suggestion-bar.show {
  display: flex;
}
.ai-suggestion-bar-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-right: 8px;
}
.ai-suggestion-bar-btn {
  padding: 6px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  cursor: pointer;
  border: 1px solid transparent;
  font-weight: 500;
}
.ai-suggestion-bar-btn.accept {
  background: var(--accent);
  color: #fff;
}
.ai-suggestion-bar-btn.accept:hover {
  background: var(--accent-hover);
}
.ai-suggestion-bar-btn.reject {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}
.ai-suggestion-bar-btn.reject:hover {
  background: var(--border);
  color: var(--text);
}

/* 预览区中 AI 建议块：代码段风格，与正文明显区分 */
.ai-suggestion-preview {
  margin: 14px 0;
  padding: 14px 18px;
  border: 1px solid rgba(45, 138, 94, 0.35);
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text);
  font-family: var(--font-mono), ui-monospace, monospace;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.ai-suggestion-preview :first-child {
  margin-top: 0;
}
.ai-suggestion-preview :last-child {
  margin-bottom: 0;
}

/* 表格编辑工具栏 */
.table-edit-bar {
  position: fixed;
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-drop);
  font-size: 13px;
}
.table-edit-bar .table-edit-label { font-weight: 600; margin-right: 4px; color: var(--text-muted); }
.table-edit-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: var(--bg-toolbar);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
}
.table-edit-btn:hover { background: var(--accent-soft); border-color: var(--accent); }
.table-edit-done { background: var(--accent); color: #fff; border-color: var(--accent); }
.table-edit-done:hover { background: var(--accent-hover); }
.markdown-body table.table-editing { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ========== 查找与替换栏 ========== */
.find-bar {
  display: none;
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1600;
  background: var(--bg-editor);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-drop);
  padding: 10px 14px;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
}
.find-bar.show { display: flex; }
.find-bar .find-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.find-bar .find-label { font-size: 12px; color: var(--text-muted); min-width: 36px; }
.find-bar .find-input {
  width: 200px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}
.find-bar input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.find-bar .find-info { font-size: 12px; color: var(--text-muted); min-width: 56px; }
.find-bar .find-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: var(--bg-toolbar);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
}
.find-bar .find-btn:hover { background: var(--border); }
.find-bar .find-close { font-size: 18px; line-height: 1; padding: 2px 8px; margin-left: auto; }
.find-bar .find-replace-btn { margin-left: 4px; }

/* 查找结果临时高亮（仅预览区，关闭搜索会恢复） */
.markdown-body .find-match { background: rgba(255, 235, 59, 0.45); border-radius: 2px; }
.markdown-body .find-match-current { background: rgba(255, 152, 0, 0.55); border-radius: 2px; }

/* ========== Markdown 预览样式 (GitHub 风格) ========== */
.markdown-body {
  font-size: 15px;
  line-height: 1.7;
  word-wrap: break-word;
}

.markdown-body h1 { font-size: 2em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; margin: 0.8em 0 0.5em; font-weight: 600; }
.markdown-body h2 { font-size: 1.5em; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; margin: 1em 0 0.5em; font-weight: 600; }
.markdown-body h3 { font-size: 1.25em; margin: 1em 0 0.5em; font-weight: 600; }
.markdown-body h4 { font-size: 1.1em; margin: 1em 0 0.5em; font-weight: 600; }
.markdown-body h5 { font-size: 1em; margin: 1em 0 0.5em; font-weight: 600; }
.markdown-body h6 { font-size: 0.9em; margin: 1em 0 0.5em; font-weight: 600; color: var(--text-muted); }
.markdown-body h1:first-child, .markdown-body h2:first-child, .markdown-body h3:first-child { margin-top: 0; }
.markdown-body p { margin: 0.6em 0; line-height: 1.75; }
.markdown-body ul, .markdown-body ol { padding-left: 2em; margin: 0.6em 0; line-height: 1.75; }
.markdown-body li { margin: 0.25em 0; }
.markdown-body blockquote { border-left: 4px solid var(--accent); margin: 0.8em 0; padding: 0.5em 0 0.5em 1.2em; color: var(--text-muted); background: var(--accent-soft); border-radius: 0 var(--radius) var(--radius) 0; }
.markdown-body code { background: rgba(0,0,0,0.06); padding: 0.2em 0.45em; border-radius: 4px; font-family: var(--font-mono); font-size: 0.9em; }
.markdown-body pre { background: #f8f9f8; padding: 16px 18px; border-radius: var(--radius); overflow: auto; border: 1px solid var(--border); margin: 0.8em 0; }
.markdown-body pre code { background: none; padding: 0; }
/* 表格：完整边框与表头样式 */
.markdown-body .table-wrapper {
  overflow-x: auto;
  margin: 1em 0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  min-width: 240px;
  margin: 0;
  font-size: 14px;
}
.markdown-body thead {
  background: var(--bg-toolbar);
}
.markdown-body th {
  border: 1px solid var(--border);
  border-bottom: 2px solid var(--border);
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--text);
}
.markdown-body th[align="center"], .markdown-body td[align="center"] { text-align: center; }
.markdown-body th[align="right"], .markdown-body td[align="right"] { text-align: right; }
.markdown-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.markdown-body tbody tr:nth-child(even) {
  background: rgba(0,0,0,0.02);
}
.markdown-body tbody tr:hover {
  background: rgba(0,0,0,0.04);
}
.markdown-body table + table {
  margin-top: 1em;
}
.markdown-body mark { background: #fef08a; color: inherit; padding: 0 2px; border-radius: 2px; }
.markdown-body a { color: var(--accent); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body img { max-width: 100%; height: auto; }
.markdown-body hr { border: none; border-top: 1px solid var(--border); margin: 1em 0; }
.markdown-body strong { font-weight: 600; }
.markdown-body em { font-style: italic; }
.markdown-body del { text-decoration: line-through; }
.markdown-body u { text-decoration: underline; }
/* AI 纠错标注：红色下划线，悬停显示建议 */
.markdown-body .ai-error { color: #c00; text-decoration: underline; text-decoration-color: #c00; cursor: pointer; }
/* AI 纠错点击后的「应用/忽略」浮层 */
.ai-error-popover {
  position: fixed;
  z-index: 200;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-drop);
  padding: 6px 8px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
.ai-error-popover button {
  padding: 6px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-editor);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
}
.ai-error-popover button:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.ai-error-popover button.apply-btn {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.ai-error-popover button.apply-btn:hover {
  background: var(--accent-hover);
}
.markdown-body sub, .markdown-body sup { font-size: 0.75em; line-height: 0; position: relative; vertical-align: baseline; }
.markdown-body sup { top: -0.5em; }
.markdown-body sub { bottom: -0.25em; }
/* 任务列表 GFM */
.markdown-body .contains-task-list { padding-left: 2em; }
.markdown-body .task-list-item { list-style: none; margin-left: -1.5em; }
.markdown-body .task-list-item .task-list-item-checkbox,
.markdown-body .task-list-item input[type="checkbox"] { margin-right: 0.5em; vertical-align: middle; cursor: default; }
.markdown-body .task-list-item:has(input:checked) { color: var(--text-muted); text-decoration: line-through; }
/* HTML details/summary */
.markdown-body details { margin: 0.8em 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.markdown-body summary { padding: 8px 12px; background: var(--bg-toolbar); cursor: pointer; font-weight: 500; }
.markdown-body details[open] summary { border-bottom: 1px solid var(--border); }
.markdown-body details > *:not(summary) { padding: 12px; }
/* 脚注 */
.markdown-body .footnote-ref { font-size: 0.85em; }
.markdown-body .footnote-ref a { color: var(--accent); }
.markdown-body .footnotes { margin-top: 2em; padding-top: 1em; border-top: 1px solid var(--border); font-size: 0.9em; color: var(--text-muted); }
.markdown-body .footnotes ol { padding-left: 1.5em; }
.markdown-body .footnotes li { margin: 0.4em 0; }
/* 定义列表 */
.markdown-body dl { margin: 0.8em 0; }
.markdown-body dt { font-weight: 600; margin-top: 0.5em; }
.markdown-body dd { margin-left: 2em; margin-bottom: 0.3em; }
/* 数学公式 KaTeX */
.markdown-body .math-inline { display: inline; overflow-x: auto; }
.markdown-body .math-block { margin: 0.8em 0; overflow-x: auto; }
.markdown-body .katex { font-size: 1.1em; }
/* Mermaid 图表 */
.markdown-body .mermaid { margin: 1em 0; text-align: center; }

/* ========== 目录 [TOC] ========== */
.markdown-body .markdown-toc {
  margin: 1em 0;
  padding: 14px 18px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.markdown-body .markdown-toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0.25em 0 0;
}
.markdown-body .markdown-toc > ul { margin-top: 0; }
.markdown-body .markdown-toc li {
  margin: 0.35em 0;
  padding: 0;
  line-height: 1.4;
}
.markdown-body .markdown-toc li.toc-level-1 { padding-left: 0; font-weight: 600; }
.markdown-body .markdown-toc li.toc-level-2 { padding-left: 1em; font-size: 0.95em; }
.markdown-body .markdown-toc li.toc-level-3 { padding-left: 2em; font-size: 0.9em; }
.markdown-body .markdown-toc li.toc-level-4,
.markdown-body .markdown-toc li.toc-level-5,
.markdown-body .markdown-toc li.toc-level-6 { padding-left: 2.5em; font-size: 0.88em; }
.markdown-body .markdown-toc a {
  color: var(--text);
  text-decoration: none;
}
.markdown-body .markdown-toc a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ========== 页面风格主题（菜单「风格」下拉选择） ========== */
.preview-inner.preview-theme-github {
  /* 默认，与全局一致 */
}
.preview-inner.preview-theme-simple {
  background: #fff;
}
.preview-inner.preview-theme-simple .markdown-body {
  color: #1a1a1a;
  background: transparent;
}
.preview-inner.preview-theme-simple .markdown-body h1,
.preview-inner.preview-theme-simple .markdown-body h2,
.preview-inner.preview-theme-simple .markdown-body h3,
.preview-inner.preview-theme-simple .markdown-body h4,
.preview-inner.preview-theme-simple .markdown-body h5,
.preview-inner.preview-theme-simple .markdown-body h6 { color: #111; border-color: #e8e8e8; }
.preview-inner.preview-theme-simple .markdown-body blockquote {
  border-left-color: #ddd;
  background: #fafafa;
  color: #555;
}
.preview-inner.preview-theme-simple .markdown-body pre { background: #f6f6f6; border-color: #eee; }
.preview-inner.preview-theme-simple .markdown-body code { background: #f0f0f0; }
.preview-inner.preview-theme-simple .markdown-body a { color: #0066cc; }
.preview-inner.preview-theme-simple .markdown-body .table-wrapper,
.preview-inner.preview-theme-simple .markdown-body .markdown-toc { border-color: #eee; background: #fafafa; }

.preview-inner.preview-theme-paper {
  background: #f4f1ea;
}
.preview-inner.preview-theme-paper .markdown-body {
  color: #2c2c2c;
  background: transparent;
  font-family: Georgia, "Songti SC", serif;
}
.preview-inner.preview-theme-paper .markdown-body h1,
.preview-inner.preview-theme-paper .markdown-body h2,
.preview-inner.preview-theme-paper .markdown-body h3,
.preview-inner.preview-theme-paper .markdown-body h4,
.preview-inner.preview-theme-paper .markdown-body h5,
.preview-inner.preview-theme-paper .markdown-body h6 { color: #1a1a1a; border-color: #c9b896; }
.preview-inner.preview-theme-paper .markdown-body blockquote {
  border-left-color: #8b7355;
  background: rgba(139, 115, 85, 0.08);
  color: #4a4a4a;
}
.preview-inner.preview-theme-paper .markdown-body pre { background: #e8e4dc; border-color: #c9b896; }
.preview-inner.preview-theme-paper .markdown-body code { background: #e0dcd2; font-family: var(--font-mono); }
.preview-inner.preview-theme-paper .markdown-body a { color: #5c4a3a; }
.preview-inner.preview-theme-paper .markdown-body .table-wrapper,
.preview-inner.preview-theme-paper .markdown-body .markdown-toc { border-color: #c9b896; background: rgba(244, 241, 234, 0.8); }

.preview-inner.preview-theme-dark {
  background: #1e1e1e;
}
.preview-inner.preview-theme-dark .markdown-body {
  color: #d4d4d4;
  background: transparent;
}
.preview-inner.preview-theme-dark .markdown-body h1,
.preview-inner.preview-theme-dark .markdown-body h2,
.preview-inner.preview-theme-dark .markdown-body h3,
.preview-inner.preview-theme-dark .markdown-body h4,
.preview-inner.preview-theme-dark .markdown-body h5,
.preview-inner.preview-theme-dark .markdown-body h6 { color: #fff; border-color: #404040; }
.preview-inner.preview-theme-dark .markdown-body blockquote {
  border-left-color: #58a6ff;
  background: #252525;
  color: #a0a0a0;
}
.preview-inner.preview-theme-dark .markdown-body pre { background: #2d2d2d; border-color: #404040; }
.preview-inner.preview-theme-dark .markdown-body code { background: #363636; color: #d4d4d4; }
.preview-inner.preview-theme-dark .markdown-body a { color: #58a6ff; }
.preview-inner.preview-theme-dark .markdown-body .table-wrapper { border-color: #404040; box-shadow: none; }
.preview-inner.preview-theme-dark .markdown-body th,
.preview-inner.preview-theme-dark .markdown-body td { border-color: #404040; }
.preview-inner.preview-theme-dark .markdown-body thead { background: #2d2d2d; }
.preview-inner.preview-theme-dark .markdown-body tbody tr:nth-child(even) { background: #252525; }
.preview-inner.preview-theme-dark .markdown-body tbody tr:hover { background: #2d2d2d; }
.preview-inner.preview-theme-dark .markdown-body .markdown-toc { background: #252525; border-color: #404040; }
.preview-inner.preview-theme-dark .markdown-body .markdown-toc a { color: #d4d4d4; }
.preview-inner.preview-theme-dark .markdown-body .markdown-toc a:hover { color: #58a6ff; }
.preview-inner.preview-theme-dark .markdown-body hr { border-color: #404040; }
.preview-inner.preview-theme-dark .markdown-body mark { background: #5c4a1e; color: #d4d4d4; }

.preview-inner.preview-theme-sepia {
  background: #f0e6d3;
}
.preview-inner.preview-theme-sepia .markdown-body {
  color: #3d3a33;
  background: transparent;
}
.preview-inner.preview-theme-sepia .markdown-body h1,
.preview-inner.preview-theme-sepia .markdown-body h2,
.preview-inner.preview-theme-sepia .markdown-body h3,
.preview-inner.preview-theme-sepia .markdown-body h4,
.preview-inner.preview-theme-sepia .markdown-body h5,
.preview-inner.preview-theme-sepia .markdown-body h6 { color: #2c2920; border-color: #c4b896; }
.preview-inner.preview-theme-sepia .markdown-body blockquote {
  border-left-color: #8b7355;
  background: rgba(139, 115, 85, 0.1);
  color: #4a4540;
}
.preview-inner.preview-theme-sepia .markdown-body pre { background: #e6dfd0; border-color: #c4b896; }
.preview-inner.preview-theme-sepia .markdown-body code { background: #ddd6c5; }
.preview-inner.preview-theme-sepia .markdown-body a { color: #5c4a3a; }
.preview-inner.preview-theme-sepia .markdown-body .table-wrapper,
.preview-inner.preview-theme-sepia .markdown-body .markdown-toc { border-color: #c4b896; background: rgba(240, 230, 211, 0.6); }

/* Notion 灰：浅灰底、无衬线、柔和边框 */
.preview-inner.preview-theme-notion {
  background: #f7f6f3;
}
.preview-inner.preview-theme-notion .markdown-body {
  color: #37352f;
  background: transparent;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
}
.preview-inner.preview-theme-notion .markdown-body h1,
.preview-inner.preview-theme-notion .markdown-body h2,
.preview-inner.preview-theme-notion .markdown-body h3,
.preview-inner.preview-theme-notion .markdown-body h4,
.preview-inner.preview-theme-notion .markdown-body h5,
.preview-inner.preview-theme-notion .markdown-body h6 { color: #37352f; border-color: #e8e6e1; font-weight: 600; }
.preview-inner.preview-theme-notion .markdown-body blockquote {
  border-left-color: #9b9a97;
  background: rgba(55, 53, 47, 0.06);
  color: #37352f;
}
.preview-inner.preview-theme-notion .markdown-body pre { background: rgba(55, 53, 47, 0.08); border-color: #e8e6e1; }
.preview-inner.preview-theme-notion .markdown-body code { background: rgba(55, 53, 47, 0.08); }
.preview-inner.preview-theme-notion .markdown-body a { color: #0b6bcb; }
.preview-inner.preview-theme-notion .markdown-body .table-wrapper,
.preview-inner.preview-theme-notion .markdown-body .markdown-toc { border-color: #e8e6e1; background: rgba(55, 53, 47, 0.04); }

/* 杂志排版：衬线、大标题、窄内容感 */
.preview-inner.preview-theme-editorial {
  background: #fafafa;
}
.preview-inner.preview-theme-editorial .markdown-body {
  color: #1a1a1a;
  background: transparent;
  font-family: Georgia, "Songti SC", "SimSun", serif;
  font-size: 17px;
  line-height: 1.8;
}
.preview-inner.preview-theme-editorial .markdown-body h1 {
  font-size: 2.2em;
  font-weight: 700;
  letter-spacing: -0.02em;
  border-bottom: 2px solid #1a1a1a;
  padding-bottom: 0.25em;
}
.preview-inner.preview-theme-editorial .markdown-body h2,
.preview-inner.preview-theme-editorial .markdown-body h3,
.preview-inner.preview-theme-editorial .markdown-body h4,
.preview-inner.preview-theme-editorial .markdown-body h5,
.preview-inner.preview-theme-editorial .markdown-body h6 { color: #1a1a1a; border-color: #ccc; }
.preview-inner.preview-theme-editorial .markdown-body blockquote {
  border-left: 4px solid #1a1a1a;
  background: #f0f0f0;
  color: #333;
  font-style: italic;
}
.preview-inner.preview-theme-editorial .markdown-body pre { background: #2d2d2d; color: #f8f8f2; border: none; }
.preview-inner.preview-theme-editorial .markdown-body code { background: #eee; font-family: var(--font-mono); }
.preview-inner.preview-theme-editorial .markdown-body a { color: #c00; text-decoration: underline; }
.preview-inner.preview-theme-editorial .markdown-body .table-wrapper,
.preview-inner.preview-theme-editorial .markdown-body .markdown-toc { border-color: #ccc; background: #f5f5f5; }

/* 暖光：琥珀色背景、深棕文字 */
.preview-inner.preview-theme-warm {
  background: #fef3e2;
}
.preview-inner.preview-theme-warm .markdown-body {
  color: #3e2723;
  background: transparent;
  font-family: var(--font-sans);
}
.preview-inner.preview-theme-warm .markdown-body h1,
.preview-inner.preview-theme-warm .markdown-body h2,
.preview-inner.preview-theme-warm .markdown-body h3,
.preview-inner.preview-theme-warm .markdown-body h4,
.preview-inner.preview-theme-warm .markdown-body h5,
.preview-inner.preview-theme-warm .markdown-body h6 { color: #2c1810; border-color: #d4a574; }
.preview-inner.preview-theme-warm .markdown-body blockquote {
  border-left-color: #b8860b;
  background: rgba(184, 134, 11, 0.12);
  color: #4a3728;
}
.preview-inner.preview-theme-warm .markdown-body pre { background: #f5e6d3; border-color: #d4a574; }
.preview-inner.preview-theme-warm .markdown-body code { background: #f0dfc8; }
.preview-inner.preview-theme-warm .markdown-body a { color: #8b4513; }
.preview-inner.preview-theme-warm .markdown-body .table-wrapper,
.preview-inner.preview-theme-warm .markdown-body .markdown-toc { border-color: #d4a574; background: rgba(254, 243, 226, 0.8); }

/* 森林绿：浅绿底、深绿强调 */
.preview-inner.preview-theme-forest {
  background: #e8f5e9;
}
.preview-inner.preview-theme-forest .markdown-body {
  color: #1b5e20;
  background: transparent;
  font-family: var(--font-sans);
}
.preview-inner.preview-theme-forest .markdown-body h1,
.preview-inner.preview-theme-forest .markdown-body h2,
.preview-inner.preview-theme-forest .markdown-body h3,
.preview-inner.preview-theme-forest .markdown-body h4,
.preview-inner.preview-theme-forest .markdown-body h5,
.preview-inner.preview-theme-forest .markdown-body h6 { color: #0d3d0d; border-color: #a5d6a7; }
.preview-inner.preview-theme-forest .markdown-body blockquote {
  border-left-color: #2e7d32;
  background: rgba(46, 125, 50, 0.12);
  color: #1b5e20;
}
.preview-inner.preview-theme-forest .markdown-body pre { background: #c8e6c9; border-color: #a5d6a7; }
.preview-inner.preview-theme-forest .markdown-body code { background: #b9f6ca; }
.preview-inner.preview-theme-forest .markdown-body a { color: #1b5e20; }
.preview-inner.preview-theme-forest .markdown-body .table-wrapper,
.preview-inner.preview-theme-forest .markdown-body .markdown-toc { border-color: #a5d6a7; background: rgba(232, 245, 233, 0.9); }

/* 海洋蓝：浅蓝底、深蓝强调 */
.preview-inner.preview-theme-ocean {
  background: #e3f2fd;
}
.preview-inner.preview-theme-ocean .markdown-body {
  color: #0d47a1;
  background: transparent;
  font-family: var(--font-sans);
}
.preview-inner.preview-theme-ocean .markdown-body h1,
.preview-inner.preview-theme-ocean .markdown-body h2,
.preview-inner.preview-theme-ocean .markdown-body h3,
.preview-inner.preview-theme-ocean .markdown-body h4,
.preview-inner.preview-theme-ocean .markdown-body h5,
.preview-inner.preview-theme-ocean .markdown-body h6 { color: #0d47a1; border-color: #90caf9; }
.preview-inner.preview-theme-ocean .markdown-body blockquote {
  border-left-color: #1565c0;
  background: rgba(21, 101, 192, 0.1);
  color: #1565c0;
}
.preview-inner.preview-theme-ocean .markdown-body pre { background: #bbdefb; border-color: #90caf9; }
.preview-inner.preview-theme-ocean .markdown-body code { background: #b3e5fc; }
.preview-inner.preview-theme-ocean .markdown-body a { color: #0d47a1; }
.preview-inner.preview-theme-ocean .markdown-body .table-wrapper,
.preview-inner.preview-theme-ocean .markdown-body .markdown-toc { border-color: #90caf9; background: rgba(227, 242, 253, 0.9); }

/* 终端：黑底绿字、等宽感 */
.preview-inner.preview-theme-terminal {
  background: #0c0c0c;
}
.preview-inner.preview-theme-terminal .markdown-body {
  color: #33ff33;
  background: transparent;
  font-family: "SF Mono", "Consolas", "Monaco", monospace;
  font-size: 14px;
  line-height: 1.6;
}
.preview-inner.preview-theme-terminal .markdown-body h1,
.preview-inner.preview-theme-terminal .markdown-body h2,
.preview-inner.preview-theme-terminal .markdown-body h3,
.preview-inner.preview-theme-terminal .markdown-body h4,
.preview-inner.preview-theme-terminal .markdown-body h5,
.preview-inner.preview-theme-terminal .markdown-body h6 { color: #00ff00; border-color: #228b22; }
.preview-inner.preview-theme-terminal .markdown-body blockquote {
  border-left-color: #33ff33;
  background: rgba(51, 255, 51, 0.08);
  color: #7fff7f;
}
.preview-inner.preview-theme-terminal .markdown-body pre { background: #1a1a1a; border-color: #228b22; color: #33ff33; }
.preview-inner.preview-theme-terminal .markdown-body code { background: #1a1a1a; color: #33ff33; }
.preview-inner.preview-theme-terminal .markdown-body a { color: #7fff7f; }
.preview-inner.preview-theme-terminal .markdown-body .table-wrapper { border-color: #228b22; }
.preview-inner.preview-theme-terminal .markdown-body th,
.preview-inner.preview-theme-terminal .markdown-body td { border-color: #228b22; }
.preview-inner.preview-theme-terminal .markdown-body thead { background: #1a1a1a; }
.preview-inner.preview-theme-terminal .markdown-body .markdown-toc { background: #1a1a1a; border-color: #228b22; }
.preview-inner.preview-theme-terminal .markdown-body .markdown-toc a { color: #33ff33; }
.preview-inner.preview-theme-terminal .markdown-body hr { border-color: #228b22; }

/* 午夜蓝：深蓝底、浅蓝文字 */
.preview-inner.preview-theme-midnight {
  background: #0f172a;
}
.preview-inner.preview-theme-midnight .markdown-body {
  color: #e2e8f0;
  background: transparent;
  font-family: var(--font-sans);
}
.preview-inner.preview-theme-midnight .markdown-body h1,
.preview-inner.preview-theme-midnight .markdown-body h2,
.preview-inner.preview-theme-midnight .markdown-body h3,
.preview-inner.preview-theme-midnight .markdown-body h4,
.preview-inner.preview-theme-midnight .markdown-body h5,
.preview-inner.preview-theme-midnight .markdown-body h6 { color: #f1f5f9; border-color: #334155; }
.preview-inner.preview-theme-midnight .markdown-body blockquote {
  border-left-color: #60a5fa;
  background: rgba(59, 130, 246, 0.12);
  color: #cbd5e1;
}
.preview-inner.preview-theme-midnight .markdown-body pre { background: #1e293b; border-color: #334155; color: #e2e8f0; }
.preview-inner.preview-theme-midnight .markdown-body code { background: #1e293b; color: #93c5fd; }
.preview-inner.preview-theme-midnight .markdown-body a { color: #93c5fd; }
.preview-inner.preview-theme-midnight .markdown-body .table-wrapper { border-color: #334155; }
.preview-inner.preview-theme-midnight .markdown-body th,
.preview-inner.preview-theme-midnight .markdown-body td { border-color: #334155; }
.preview-inner.preview-theme-midnight .markdown-body thead { background: #1e293b; }
.preview-inner.preview-theme-midnight .markdown-body .markdown-toc { background: #1e293b; border-color: #334155; }
.preview-inner.preview-theme-midnight .markdown-body .markdown-toc a { color: #e2e8f0; }
.preview-inner.preview-theme-midnight .markdown-body .markdown-toc a:hover { color: #93c5fd; }

/* 高对比：纯白/纯黑、粗体标题 */
.preview-inner.preview-theme-highcontrast {
  background: #fff;
}
.preview-inner.preview-theme-highcontrast .markdown-body {
  color: #000;
  background: transparent;
  font-family: var(--font-sans);
  font-weight: 500;
}
.preview-inner.preview-theme-highcontrast .markdown-body h1,
.preview-inner.preview-theme-highcontrast .markdown-body h2,
.preview-inner.preview-theme-highcontrast .markdown-body h3,
.preview-inner.preview-theme-highcontrast .markdown-body h4,
.preview-inner.preview-theme-highcontrast .markdown-body h5,
.preview-inner.preview-theme-highcontrast .markdown-body h6 { color: #000; border-color: #000; font-weight: 700; }
.preview-inner.preview-theme-highcontrast .markdown-body blockquote {
  border-left: 4px solid #000;
  background: #f0f0f0;
  color: #000;
}
.preview-inner.preview-theme-highcontrast .markdown-body pre { background: #000; color: #fff; border: 2px solid #000; }
.preview-inner.preview-theme-highcontrast .markdown-body code { background: #e0e0e0; color: #000; }
.preview-inner.preview-theme-highcontrast .markdown-body a { color: #000; text-decoration: underline; font-weight: 600; }
.preview-inner.preview-theme-highcontrast .markdown-body .table-wrapper,
.preview-inner.preview-theme-highcontrast .markdown-body .markdown-toc { border: 2px solid #000; background: #fff; }
.preview-inner.preview-theme-highcontrast .markdown-body th,
.preview-inner.preview-theme-highcontrast .markdown-body td { border: 1px solid #000; }

/* ========== 下拉菜单（风格） ========== */
.dropdown-menu {
  display: none;
  position: fixed;
  min-width: 180px;
  background: var(--bg-editor);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-drop);
  padding: 6px 0;
  z-index: 1000;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-menu button {
  display: block;
  width: 100%;
  padding: 8px 16px;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  transition: background 0.12s ease, color 0.12s ease;
}

.dropdown-menu button:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.dropdown-menu hr {
  margin: 6px 0;
  border: none;
  border-top: 1px solid var(--border);
}

/* ========== 弹窗 ========== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal.show {
  display: flex;
}

/* 欢迎弹窗：首次打开时显示，点击「开始使用」或遮罩关闭 */
.welcome-modal .welcome-modal-backdrop {
  position: absolute;
  inset: 0;
  cursor: pointer;
}
.welcome-modal .welcome-modal-content {
  position: relative;
  z-index: 1;
  background: var(--bg-editor);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  min-width: 360px;
  max-width: 90vw;
  box-shadow: var(--shadow-drop);
  border: 1px solid var(--border);
}
.welcome-modal .welcome-modal-title {
  margin: 0 0 8px 0;
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
}
.welcome-modal .welcome-modal-subtitle {
  margin: 0 0 24px 0;
  font-size: 14px;
  color: var(--text-muted);
}
.welcome-modal .welcome-modal-features {
  margin: 0 0 24px 0;
  padding: 0;
  list-style: none;
}
.welcome-modal .welcome-modal-features li {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text);
}
.welcome-modal .welcome-feature-icon {
  color: var(--accent);
  margin-right: 8px;
}
.welcome-modal .welcome-modal-notices {
  margin: 0 0 24px 0;
  padding: 14px 16px;
  background: var(--bg-toolbar, rgba(0,0,0,0.04));
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
}
.welcome-modal .welcome-notice {
  margin: 0 0 10px 0;
}
.welcome-modal .welcome-notice:last-child {
  margin-bottom: 0;
}
.welcome-modal .welcome-notice strong {
  color: var(--text);
  font-weight: 600;
}
.welcome-modal .welcome-modal-btn {
  display: block;
  width: 100%;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s ease;
}
.welcome-modal .welcome-modal-btn:hover {
  background: var(--accent-hover);
}

.modal-content {
  background: var(--bg-editor);
  border-radius: var(--radius-lg);
  padding: 24px;
  min-width: 320px;
  box-shadow: var(--shadow-drop);
  border: 1px solid var(--border);
}

.modal-content h3 {
  margin: 0 0 16px 0;
  font-size: 16px;
}

.form-row {
  margin-bottom: 12px;
}

.form-hint { font-size: 12px; color: var(--text-muted); margin: -8px 0 12px 0; }
.form-row label {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

.form-row input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.collab-join-code-input {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  min-width: 200px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* AI 设置前须知弹窗 */
.ai-settings-notice-content {
  max-width: 480px;
}
.ai-settings-notice-content h3 {
  margin: 0 0 16px 0;
  font-size: 16px;
}
.ai-settings-notices {
  margin: 0 0 20px 0;
  padding: 14px 16px;
  background: var(--bg-toolbar, rgba(0,0,0,0.04));
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-muted);
}
.ai-settings-notice {
  margin: 0 0 10px 0;
}
.ai-settings-notice:last-child {
  margin-bottom: 0;
}
.ai-settings-notice strong {
  color: var(--text);
  font-weight: 600;
}

.translate-hint {
  margin: 0 0 12px 0;
  font-size: 12px;
  color: var(--text-muted);
}
.translate-lang-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}
.translate-lang-grid .btn-lang {
  padding: 8px 14px;
  font-size: 13px;
  background: var(--bg-toolbar);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text);
}
.translate-lang-grid .btn-lang:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.btn-primary {
  padding: 8px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
}

.btn-primary:hover {
  background: var(--accent-hover);
}
.btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.btn-secondary {
  padding: 8px 16px;
  background: var(--bg-toolbar);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
}

.btn-secondary:hover {
  background: var(--border);
}

.modal-wide {
  min-width: 400px;
}

/* AI 润色结果弹窗：原文 vs 润色后，接受/放弃 */
.modal-ai-result {
  max-width: 90vw;
  width: 900px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}
.modal-ai-result h3 { flex-shrink: 0; }
.ai-result-status {
  margin: 0 0 10px 0;
  font-size: 13px;
  color: var(--text-muted);
  min-height: 20px;
}
.ai-result-status.streaming {
  color: var(--accent);
}
.ai-result-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  flex: 1;
  min-height: 200px;
  margin-bottom: 16px;
}
.ai-result-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.ai-result-panel-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  flex-shrink: 0;
}
.ai-result-text,
.ai-result-text-wrap {
  flex: 1;
  min-height: 180px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.5;
  font-family: var(--font-mono), monospace;
  resize: none;
  overflow: auto;
  background: var(--bg-editor);
  color: var(--text);
}
.ai-result-text-wrap {
  white-space: pre-wrap;
  word-break: break-word;
}
.ai-result-new {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}
.ai-result-new.streaming::after {
  content: '▌';
  animation: ai-caret 0.8s step-end infinite;
  color: var(--accent);
}
@keyframes ai-caret {
  50% { opacity: 0; }
}
.ai-result-actions {
  flex-shrink: 0;
}

/* 模板选择弹窗 */
.modal-templates .template-list {
  max-height: 60vh;
  overflow-y: auto;
  margin: 12px 0;
}
.modal-templates .template-role-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin: 12px 0 6px 0;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.modal-templates .template-role-title:first-child {
  margin-top: 0;
}
.modal-templates .template-role-list {
  list-style: none;
  margin: 0 0 8px 0;
  padding: 0;
}
.modal-templates .template-role-list li {
  margin: 0;
  padding: 0;
}
.modal-templates .template-item-btn {
  display: block;
  width: 100%;
  padding: 8px 12px;
  margin: 2px 0;
  border: none;
  border-radius: var(--radius);
  background: var(--bg-toolbar);
  color: var(--text);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}
.modal-templates .template-item-btn:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.shortcuts-table {
  width: 100%;
  margin-bottom: 16px;
  border-collapse: collapse;
}

.shortcuts-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.shortcuts-table td:first-child {
  font-family: var(--font-mono);
  color: var(--accent);
  width: 140px;
}

/* ========== 表情弹窗 ========== */
.emoji-modal .modal-content {
  min-width: 380px;
  max-width: 420px;
}

/* 赞赏码弹窗 */
.tip-modal-content {
  text-align: center;
  max-width: 360px;
}
.tip-modal-desc {
  margin: 0 0 16px 0;
  font-size: 14px;
  color: var(--text-muted);
}
.tip-modal-qr {
  margin-bottom: 16px;
}
.tip-modal-qr .tip-qr-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: var(--radius);
}

.emoji-categories {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.emoji-cat {
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--bg-toolbar);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
}

.emoji-cat:hover,
.emoji-cat.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.emoji-cat { transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease; }

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
  max-height: 200px;
  overflow-y: auto;
}

.emoji-grid span {
  padding: 6px;
  font-size: 20px;
  cursor: pointer;
  text-align: center;
  border-radius: var(--radius);
}

.emoji-grid span:hover {
  background: var(--bg-toolbar);
}

/* ========== 暗色主题可选 ========== */
@media (prefers-color-scheme: dark) {
  body.theme-dark {
    --bg: #1e1e1e;
    --bg-editor: #252526;
    --bg-toolbar: #2d2d30;
    --border: #3c3c3c;
    --text: #d4d4d4;
    --text-muted: #9d9d9d;
  }
  body.theme-dark .markdown-body code { background: rgba(255,255,255,0.1); }
  body.theme-dark .markdown-body pre { background: #1e1e1e; }
}

/* ========== PDF 导出右下角浮动进度条 ========== */
.pdf-export-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2100;
  min-width: 260px;
  padding: 14px 18px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-drop);
  font-size: 13px;
  color: var(--text);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}
.pdf-export-toast.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.pdf-export-toast-inner { display: block; }
.pdf-export-status {
  margin: 0 0 10px 0;
  font-weight: 500;
  color: var(--text);
}
.pdf-export-progress-wrap {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.pdf-export-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.25s ease;
}
.pdf-export-toast.indeterminate .pdf-export-progress-bar {
  width: 35%;
  animation: pdf-export-pulse 1.2s ease-in-out infinite;
}
@keyframes pdf-export-pulse {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(250%); }
}

/* Word 导入复用 .pdf-export-toast 样式（class="pdf-export-toast word-import-toast"） */

/* ========== 全局轻提示 showToast ========== */
.app-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2200;
  max-width: 360px;
  padding: 12px 18px;
  background: var(--bg-editor);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-drop);
  font-size: 13px;
  color: var(--text);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
.app-toast.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.app-toast.error {
  border-color: var(--accent);
  color: var(--text);
}

/* ========== AI 指令浮窗（可拖动，不遮挡页面） ========== */
.ai-command-panel {
  position: fixed;
  z-index: 1900;
  min-width: 360px;
  max-width: 480px;
  background: var(--bg-editor);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-drop);
  overflow: hidden;
  pointer-events: auto;
}
.ai-command-panel-title {
  padding: 10px 14px;
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  cursor: move;
  user-select: none;
}
.ai-command-mode {
  display: flex;
  gap: 16px;
  padding: 10px 14px;
  background: var(--bg-editor);
  border-bottom: 1px solid var(--border);
}
.ai-command-mode-option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
}
.ai-command-mode-option input {
  margin: 0;
  cursor: pointer;
}
.ai-command-input {
  width: 100%;
  min-height: 88px;
  margin: 0;
  padding: 12px 14px;
  border: none;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-editor);
  resize: vertical;
  box-sizing: border-box;
}
.ai-command-input:focus {
  outline: none;
  background: var(--bg-editor);
}
.ai-command-hint {
  margin: 0;
  padding: 8px 14px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}
.ai-command-actions {
  display: flex;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  background: var(--bg-toolbar);
}
.ai-command-actions .btn-primary,
.ai-command-actions .btn-secondary {
  flex: 0 0 auto;
}