* { box-sizing: border-box; }
html, body, #root { margin: 0; height: 100%; }

/* 全局统一字体栈——消灭按钮/输入框回退到 Arial 的观感不一致（A档-1） */
body {
  font-family: system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Noto Sans CJK SC', sans-serif;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font-family: inherit; }
svg { display: block; }

/* 自定义滚动条——细+半透明+圆角 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--control-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }
* { scrollbar-width: thin; scrollbar-color: var(--control-border) transparent; }
/* Tiptap 编辑器正文（B档-7 排版打磨：CJK 阅读优化、标题层级、选区、引用/链接/表格） */
.tiptap-wrap .ProseMirror {
  font-size: var(--editor-font-size, 14px) !important;
  font-family: var(--editor-font-family, 'Microsoft YaHei', 'Source Han Sans SC', system-ui, sans-serif) !important;
  white-space: var(--editor-white-space, pre-wrap);
  min-height: 100%;
  /* 底部加大留白：长文档写到末尾时，光标行不会贴着编辑区底缘（配合光标跟随滚动） */
  padding: 16px 24px 140px;
  line-height: 1.8;
  color: var(--text-primary);
  outline: none;
  max-width: 860px;
  margin: 0 auto;
  caret-color: var(--accent);
}
/* 兜底：去掉拼写/语法错误的红色波浪下划线（即使个别 contenteditable 仍开启 spellcheck） */
.tiptap-wrap [contenteditable="true"] :spelling-error,
.tiptap-wrap [contenteditable="true"] :grammar-error,
.tiptap-wrap .ProseMirror :spelling-error,
.tiptap-wrap .ProseMirror :grammar-error {
  text-decoration: none;
}
.tiptap-wrap .ProseMirror p { margin: 0.6em 0; }
.tiptap-wrap .ProseMirror h1 { font-size: 1.8em; margin: 1em 0 0.5em; font-weight: 700; color: var(--text-primary); padding-bottom: 0.25em; border-bottom: 1px solid var(--control-border); }
.tiptap-wrap .ProseMirror h2 { font-size: 1.5em; margin: 0.9em 0 0.45em; font-weight: 600; color: var(--text-primary); }
.tiptap-wrap .ProseMirror h3 { font-size: 1.25em; margin: 0.8em 0 0.4em; font-weight: 600; color: var(--text-primary); }
.tiptap-wrap .ProseMirror h4, .tiptap-wrap .ProseMirror h5, .tiptap-wrap .ProseMirror h6 { margin: 0.7em 0 0.35em; font-weight: 600; }
.tiptap-wrap .ProseMirror code {
  background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent-text);
  padding: 1px 5px; border-radius: 4px; font-family: 'Consolas', 'Source Code Pro', monospace;
}
.tiptap-wrap .ProseMirror pre {
  background: var(--bg-secondary); padding: 12px 16px; border-radius: var(--radius-md); overflow: auto;
  border: 1px solid var(--control-border);
}
.tiptap-wrap .ProseMirror pre code { background: none; padding: 0; color: inherit; }
.tiptap-wrap .ProseMirror a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.tiptap-wrap .ProseMirror ::selection { background: color-mix(in srgb, var(--accent) 30%, transparent); }
/* B档-7：光标所在行高亮（TiptapEditor 动态加类） */
.tiptap-wrap .ProseMirror .is-active-line { background: color-mix(in srgb, var(--accent) 6%, transparent); border-radius: 4px; }
.tiptap-wrap .ProseMirror table th { background: color-mix(in srgb, var(--accent) 10%, transparent); font-weight: 600; }
/* highlight.js 暗色主题（CodeBlockLowlight 装饰 span，FR-E5） */
.tiptap-wrap .ProseMirror .hljs { color: #abb2bf; }
.tiptap-wrap .ProseMirror .hljs-comment, .tiptap-wrap .ProseMirror .hljs-quote { color: #5c6370; font-style: italic; }
.tiptap-wrap .ProseMirror .hljs-doctag, .tiptap-wrap .ProseMirror .hljs-keyword, .tiptap-wrap .ProseMirror .hljs-formula, .tiptap-wrap .ProseMirror .hljs-selector-tag, .tiptap-wrap .ProseMirror .hljs-tag { color: #c678dd; }
.tiptap-wrap .ProseMirror .hljs-name, .tiptap-wrap .ProseMirror .hljs-section { color: #61afef; }
.tiptap-wrap .ProseMirror .hljs-addition, .tiptap-wrap .ProseMirror .hljs-attribute, .tiptap-wrap .ProseMirror .hljs-attr, .tiptap-wrap .ProseMirror .hljs-string, .tiptap-wrap .ProseMirror .hljs-template-tag, .tiptap-wrap .ProseMirror .hljs-template-variable, .tiptap-wrap .ProseMirror .hljs-value { color: #98c379; }
.tiptap-wrap .ProseMirror .hljs-built_in, .tiptap-wrap .ProseMirror .hljs-class .hljs-title, .tiptap-wrap .ProseMirror .hljs-title, .tiptap-wrap .ProseMirror .hljs-title.class_, .tiptap-wrap .ProseMirror .hljs-type { color: #e6c07b; }
.tiptap-wrap .ProseMirror .hljs-function .hljs-title, .tiptap-wrap .ProseMirror .hljs-title.function_ { color: #61afef; }
.tiptap-wrap .ProseMirror .hljs-literal, .tiptap-wrap .ProseMirror .hljs-number, .tiptap-wrap .ProseMirror .hljs-operator, .tiptap-wrap .ProseMirror .hljs-variable, .tiptap-wrap .ProseMirror .hljs-params { color: #d19a66; }
.tiptap-wrap .ProseMirror .hljs-bullet, .tiptap-wrap .ProseMirror .hljs-link, .tiptap-wrap .ProseMirror .hljs-meta, .tiptap-wrap .ProseMirror .hljs-regexp, .tiptap-wrap .ProseMirror .hljs-selector-attr, .tiptap-wrap .ProseMirror .hljs-selector-class, .tiptap-wrap .ProseMirror .hljs-selector-id, .tiptap-wrap .ProseMirror .hljs-symbol, .tiptap-wrap .ProseMirror .hljs-variable.constant_ { color: #56b6c2; }
.tiptap-wrap .ProseMirror .hljs-deletion { color: #d19a66; }
.tiptap-wrap .ProseMirror .hljs-emphasis { font-style: italic; }
.tiptap-wrap .ProseMirror .hljs-strong { font-weight: 700; }
/* highlight.js 浅色主题——当 --bg-primary 为浅色时生效（latte/daylight/plain） */
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs { color: #24292e; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-comment, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-quote { color: #6a737d; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-doctag, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-keyword, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-formula, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-selector-tag, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-tag { color: #8250df; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-name, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-section { color: #0969da; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-addition, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-attribute, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-attr, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-string, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-template-tag, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-template-variable, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-value { color: #032f62; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-built_in, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-class .hljs-title, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-title, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-title.class_, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-type { color: #6f42c1; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-function .hljs-title, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-title.function_ { color: #005cc5; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-literal, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-number, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-operator, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-variable, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-params { color: #005cc5; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-bullet, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-link, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-meta, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-regexp, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-selector-attr, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-selector-class, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-selector-id, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-symbol, :root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-variable.constant_ { color: #005cc5; }
:root[data-theme-group="light"] .tiptap-wrap .ProseMirror .hljs-deletion { color: #6a737d; }
/* FR-E11 查找高亮 */
.tiptap-wrap .ProseMirror .find-match { background: rgba(255, 213, 79, 0.35); border-radius: 2px; }
.tiptap-wrap .ProseMirror .find-match-active { background: rgba(255, 145, 0, 0.65); }

/* FR-O2：标题闪烁高亮——使用主题变量，确保动画结束完全透明 */
@keyframes outline-flash-anim {
  0% { background: var(--flash-bg, rgba(127,127,127,0.3)); }
  100% { background: transparent; }
}
.tiptap-wrap .ProseMirror h1.outline-flash,
.tiptap-wrap .ProseMirror h2.outline-flash,
.tiptap-wrap .ProseMirror h3.outline-flash,
.tiptap-wrap .ProseMirror h4.outline-flash,
.tiptap-wrap .ProseMirror h5.outline-flash,
.tiptap-wrap .ProseMirror h6.outline-flash {
  animation: outline-flash-anim 1.2s ease-out forwards;
  border-radius: 4px;
}

/* FR-O3：大纲项 hover + 当前项高亮——用 CSS :hover 避免内联 style 竞态 */
.outline-item:hover { background: var(--control-border); }
.outline-item-active {
  background: var(--control-border) !important;
  border-left: 2px solid var(--accent) !important;
}
.tiptap-wrap .ProseMirror blockquote {
  border-left: 3px solid var(--accent); padding: 4px 16px; color: var(--text-secondary); margin: 0.6em 0;
  background: color-mix(in srgb, var(--accent) 8%, transparent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.tiptap-wrap .ProseMirror ul, .tiptap-wrap .ProseMirror ol { padding-left: 24px; }
.tiptap-wrap .ProseMirror table { border-collapse: collapse; }
.tiptap-wrap .ProseMirror th, .tiptap-wrap .ProseMirror td {
  border: 1px solid var(--control-border); padding: 4px 8px;
}
.tiptap-wrap .ProseMirror p.is-editor-empty:first-child::before {
  content: attr(data-placeholder); color: var(--text-tertiary); pointer-events: none; float: left;
}

/* FR-X2：打印/另存为 PDF 干净排版 + 代码语法高亮 */
@media print {
  body * { visibility: hidden; }
  ::-webkit-scrollbar { display: none !important; }
  * { scrollbar-width: none !important; }
  .tiptap-wrap, .tiptap-wrap * { visibility: visible; }
  .tiptap-wrap { position: absolute; left: 0; top: 0; width: 100%; padding: 20px; overflow: visible !important; }
  .tiptap-wrap .ProseMirror { font-size: 14px !important; color: #000 !important; overflow: visible !important; }
  .tiptap-wrap .ProseMirror pre { background: #f4f4f4 !important; color: #333 !important; border: 1px solid #ddd; padding: 8px; border-radius: 4px; overflow: visible !important; }
  .tiptap-wrap .ProseMirror pre code { color: #333; }
  .tiptap-wrap .ProseMirror h1, .tiptap-wrap .ProseMirror h2, .tiptap-wrap .ProseMirror h3 { color: #000; }
  .tiptap-wrap .ProseMirror blockquote { border-color: #ccc; color: #555; }
  .tiptap-wrap .ProseMirror a { color: #0066cc; text-decoration: underline; }
}

/* FR-A12：统一过渡动效 */
button { transition: background 0.15s, color 0.15s, opacity 0.15s; }
button:hover { opacity: 0.85; }
/* B档-5：标题栏控制按钮 hover 背景 */
.titlebar-controls button:hover { opacity: 1; background: var(--control-border); }
.titlebar-controls button:last-child:hover { background: #e81123; color: #fff; }
@keyframes panel-slide-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.panel-slide-in { animation: panel-slide-in 0.2s ease-out; }