/* ============================================================================
 * anim-tools-canvas-nodes.css · 5 类节点视觉（拆分自 anim-tools-canvas.css）
 * ----------------------------------------------------------------------------
 * 进场必读：reports/research/canvas-ui-docs/slice-1.md (节点 frame)
 *          slice-4.md (status/spinner/error/thumb-filled) ·
 *          slice-5.md (text result) · slice-6.md (video player) ·
 *          slice-7.md (audio player) · slice-8.md (reference 节点) ·
 *          slice-9.md (script-ffmpeg 节点)
 *
 * 拆分映射（行号 = 原 anim-tools-canvas.css）：
 *   364-682  · Slice 1 节点 frame + handle + edge-path
 *   1181-1327 · Slice 4 spinner/error/thumb-filled · Slice 5 text result
 *   1329-1374 · Slice 6 video player
 *   1376-1439 · Slice 7 audio chips / stub-tag（覆盖 Slice 1 audio-player）
 *   1441-1462 · Slice 8 reference 节点 header（panel-header--reference 留 panels.css）
 *   1625-1759 · Slice 9 script-ffmpeg 节点
 * ============================================================================ */

/* ============================================================================
 * 5 类节点卡 · 通用 frame
 * Polish #1+#2+#3+#10: header chrome 全删 + footer label 全删 + 浮动 label 上方 24px
 *                     + 选中态 inset 2px box-shadow（浅咖灰按 LibTV 实证）
 *                     + image/video width 280px
 * ============================================================================ */
.canvas-node {
  position: relative;
  width: 220px;
  background: var(--canvas-bg-card, #FFFFFF);
  border: 1px solid var(--canvas-border-default, #EAEAEA);
  border-radius: 12px;
  box-shadow: var(--canvas-node-shadow, 0 1px 3px rgba(0, 0, 0, 0.04));
  /* 注：移除 overflow: hidden 防 floating label (-28px) 被裁掉 */
  font-family: inherit;
  color: var(--canvas-fg-default, #1F1F1F);
  transition: box-shadow 160ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* Phase D-3: 节点宽真抄 LibTV
   image / video / text / script = 520px（饱满 LibTV-like）
   audio = 280px（紧凑保留，LibTV 无单独 audio 节点参考）
   reference 不动（独立功能） */
.canvas-node--image,
.canvas-node--video,
.canvas-node--text,
.canvas-node--script {
  width: 520px;
}

.canvas-node--audio {
  width: 280px;
}

.canvas-node:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}

/* Polish #3: 选中态 inset 2px box-shadow 浅咖灰（LibTV rgb(168,168,168)） + soft drop shadow
   Phase E: shadow 暖色 rgba(60,40,30) → 纯黑透明
   Phase C Round 3 fix: 加 :hover 防 specificity 覆盖 */
.canvas-node--selected,
.canvas-node--selected:hover {
  box-shadow:
    0 0 0 2px #A8A8A8 inset,
    0 6px 18px rgba(0, 0, 0, 0.08);
}

/* === 浮动 label · Polish #1（节点上方 -28px / 24px 高 / transparent / 不挡 hover） === */
.canvas-node-floating-label {
  position: absolute;
  top: -28px;
  left: 0;
  right: 0;
  height: 24px;
  display: flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  pointer-events: none;
  transition: opacity 150ms cubic-bezier(0, 0, 0.2, 1);
  z-index: 1;
}

.canvas-node-floating-label .label-icon {
  width: 14px;
  height: 14px;
  color: var(--canvas-fg-subtle, #6B6B6B);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.canvas-node-floating-label .label-icon svg {
  width: 14px;
  height: 14px;
}

.canvas-node-floating-label .label-text {
  font-size: 13px;
  font-weight: 500;
  color: var(--canvas-fg-default, #1F1F1F);
  pointer-events: auto;
  cursor: text;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 50%;
}

.canvas-node-floating-label .label-meta {
  font-size: 11px;
  color: var(--canvas-fg-muted, #999999);
  opacity: 0.8;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  margin-left: 4px;
  line-height: 1.2;
}

/* Beta chip（浮动 label 内 · 跟 palette chip 同语言） */
.canvas-node-beta-chip {
  font-size: 9px;
  font-weight: 600;
  color: var(--app-text-muted, #6b7280);
  padding: 1px 5px;
  border: 1px solid var(--app-border-strong, #e5e7eb);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1;
  margin-left: 4px;
  flex-shrink: 0;
  background: var(--app-surface, #ffffff);
  pointer-events: auto;
}

/* === 节点状态 badge（B-2 2f 已删 header StatusBadge · 状态由 body 中央 running chip 显） === */
/* 注：原 .canvas-node-status / --pending/--running/--success/--failed 全删
       Polish #1 后 status 信息走浮动 label .label-meta 或 body chip，不再用 header badge */

/* === 节点 body === */
.canvas-node-body {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 文本预览（text node 专用）· Phase E：删 border + bg，节点本体已是唯一卡 */
.canvas-node-preview {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--canvas-fg-subtle, #6B6B6B);
  max-height: 60px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  background: transparent;
  padding: 0;
  border-radius: 0;
  border: none;
}

.canvas-node-preview-text {
  word-break: break-word;
}

/* 缩略图（image / video）· Phase E：删 border + bg，节点本体已是唯一卡，
   thumb 仅作 layout 容器，不要「框中框」嵌套 */
.canvas-node-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.canvas-node-thumb--empty {
  flex-direction: column;
  gap: 6px;
  color: var(--app-text-subtle, #9aa4af);
}

.canvas-node-thumb--audio,
.canvas-node-thumb--script {
  aspect-ratio: auto;
  min-height: 64px;
  padding: 10px 8px;
}

.canvas-node-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.canvas-node-thumb-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.canvas-node-thumb--video {
  background: #000;
}

.canvas-node-play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--app-text-strong, #111827);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.canvas-node-placeholder-icon {
  display: inline-flex;
  color: #B5B5B5; /* Phase E 中性灰（之前 #B5B5B5 暖咖灰偏暖） */
}

/* Phase D-2: .canvas-node-placeholder-text 已删除（节点本体不显「尚未生成」） */
.canvas-node-placeholder-text {
  /* deprecated · 留 class 为 thumb--running 子选择器引用 */
  font-size: 11.5px;
  color: var(--app-text-subtle, #9aa4af);
}

/* Audio player */
.canvas-node-audio-player {
  width: 100%;
  padding: 4px 0;
}

.canvas-node-audio-el {
  width: 100%;
  height: 36px;
}

/* Polish #2: 删除 .canvas-node-meta / .canvas-node-meta-tag / .canvas-node-meta-hint
   原 footer "图像生成 / 视频生成 / TTS 生成 / 多段拼接" 跟浮动 label 重复，全删 */

/* === ReactFlow Handle 自定义（input 灰 / output 玫瑰豆沙） === */
.canvas-node-handle {
  width: 10px !important;
  height: 10px !important;
  border-radius: 999px !important;
  border: 2px solid var(--app-surface, #ffffff) !important;
  box-shadow: 0 0 0 1px var(--app-border-strong, #e5e7eb) !important;
  transition: transform 120ms cubic-bezier(0.22, 1, 0.36, 1);
}

.canvas-node-handle--in {
  background: var(--app-text-subtle, #9aa4af) !important;
}

.canvas-node-handle--out {
  background: var(--app-primary, #b87d75) !important;
  box-shadow: 0 0 0 1px var(--app-primary-ring, rgba(184, 125, 117, 0.24)) !important;
}

.canvas-node-handle--multi {
  background: var(--app-nav-accent, #2f5d8a) !important;
  box-shadow: 0 0 0 1px rgba(47, 93, 138, 0.24) !important;
}

.canvas-node-handle--hidden {
  opacity: 0 !important;
  pointer-events: none !important;
}

.canvas-node-handle:hover {
  transform: scale(1.25);
}

/* ReactFlow edge 样式 */
.react-flow__edge-path {
  stroke: var(--app-text-subtle, #9aa4af);
  stroke-width: 1.5;
}

.react-flow__edge:hover .react-flow__edge-path {
  stroke: var(--app-primary, #b87d75);
  stroke-width: 2;
}

/* ============================================================================
 * Slice 4 · 节点 running spinner / failed error / thumbnail 交互
 * 进场必读：reports/research/canvas-ui-docs/slice-4.md
 * Polish #1: 原 header status badge 已删，spinner 走 body 中央 RunningChip
 *           (.canvas-node-thumb--running 容器) — header badge spinner 已废
 * ============================================================================ */

/* === 缩略图槽 · running 变体（替换 placeholder，整槽显 spinner + 文案） === */
.canvas-node-thumb--running {
  flex-direction: column;
  gap: 8px;
  background: var(--app-primary-soft, #f5edeb);
  border-color: var(--app-primary-ring, rgba(184, 125, 117, 0.24));
  color: var(--app-primary, #b87d75);
}

.canvas-node-thumb--running .canvas-node-placeholder-text {
  color: var(--app-primary, #b87d75);
  font-weight: 500;
}

/* === 大 spinner（节点 body 用 · 24x24） === */
.canvas-node-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 2px solid var(--app-primary, #b87d75);
  border-top-color: transparent;
  animation: canvas-node-spin 720ms linear infinite;
}

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

/* === Failed 状态错误文案块（小字 + 珊瑚红 + 可截断 hover title 全文） === */
.canvas-node-error {
  font-size: 11.5px;
  line-height: 1.5;
  font-weight: 400;
  color: var(--app-danger, #c4342d);
  background: var(--app-danger-soft, rgba(196, 52, 45, 0.08));
  border: 1px solid var(--app-danger-soft, rgba(196, 52, 45, 0.08));
  border-radius: 6px;
  padding: 6px 8px;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* === 缩略图（success 态）· 点击交互 cursor + hover 边框 === */
.canvas-node-thumb--filled {
  cursor: zoom-in;
  transition: border-color 140ms cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 140ms cubic-bezier(0.22, 1, 0.36, 1);
}

.canvas-node-thumb--filled:hover {
  border-color: var(--canvas-primary-filled, #C97064);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring, rgba(201, 112, 100, 0.20));
}

/* ============================================================================
 * Slice 5 · 文本节点结果展示槽（success 显 result.text 前 80 字符）
 * 进场必读：reports/research/canvas-ui-docs/slice-5.md
 * 复用 Slice 1 的 .canvas-node-preview（idle 预览）和 Slice 4 的 spinner/error
 * 这里只加 .canvas-node-text-result（success/running/empty 状态显示槽）
 * ============================================================================ */

.canvas-node-text-result {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--app-text-secondary, #4b5563);
  background: var(--app-surface-muted, #f8fafc);
  border: 1px solid var(--app-border-soft, rgba(139, 157, 175, 0.10));
  border-radius: 8px;
  padding: 8px 10px;
  max-height: 80px;
  min-height: 36px;
  overflow: hidden;
  word-break: break-word;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 成功态 · 文本灰底框，hover 浅描边提示 title 全文 */
.canvas-node-text-result--filled {
  display: block;
  text-align: left;
  color: var(--app-text-strong, #111827);
  cursor: help;
  transition: border-color 140ms cubic-bezier(0.22, 1, 0.36, 1);
}

.canvas-node-text-result--filled:hover {
  border-color: var(--app-primary-ring, rgba(184, 125, 117, 0.32));
}

.canvas-node-text-result-snippet {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Running 态 · 玫瑰豆沙超弱底 + spinner 居中 */
.canvas-node-text-result--running {
  flex-direction: column;
  gap: 8px;
  background: var(--app-primary-soft, #f5edeb);
  border-color: var(--app-primary-ring, rgba(184, 125, 117, 0.24));
  color: var(--app-primary, #b87d75);
}

.canvas-node-text-result--running .canvas-node-placeholder-text {
  color: var(--app-primary, #b87d75);
  font-weight: 500;
}

/* Empty 态 · 灰文案占位（无 prompt + 无 result） */
.canvas-node-text-result--empty {
  color: var(--app-text-subtle, #9aa4af);
  font-style: italic;
}

/* H-1 · empty 节点双击编辑 hint */
.canvas-node-text-empty-hint {
  color: var(--app-text-subtle, #9aa4af);
  font-size: 12px;
  font-style: italic;
  opacity: 0.7;
}

/* ============================================================================
 * Slice 6 · 视频节点 success 态播放器 + 时长 chip
 * 进场必读：reports/research/canvas-ui-docs/slice-6.md
 * 复用 Slice 1 的 .canvas-node-thumb--video 黑底 + Slice 4 的 .canvas-node-thumb--filled
 * 这里只加 success 态 video 控件（覆盖默认 cursor + 时长 chip 右下角）
 * ============================================================================ */

/* video player wrap · 覆盖 .canvas-node-thumb--filled 的 zoom-in 光标
   （视频在节点内直接播放，不进 lightbox，所以不要 zoom-in） */
.canvas-node-video-player {
  cursor: default;
}

.canvas-node-video-player:hover {
  /* 视频卡 hover 不再加额外 ring（避免 controls 被覆盖视觉），保留 frame border */
  border-color: var(--app-border-soft, rgba(139, 157, 175, 0.10));
  box-shadow: none;
}

/* video 元素填满槽 · 16:9 aspect 已在 .canvas-node-thumb 锁住 */
.canvas-node-video-player video.canvas-node-thumb-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #000;
}

/* 时长 chip · 蓝灰 family 色（跟 video header 配色同语言），右下角浮 */
.canvas-node-video-duration {
  position: absolute;
  right: 6px;
  bottom: 6px;
  font-size: 10.5px;
  font-weight: 600;
  font-feature-settings: 'tnum';
  color: #ffffff;
  background: rgba(47, 93, 138, 0.78);
  padding: 2px 7px;
  border-radius: 6px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  pointer-events: none;
  z-index: 2;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.24);
}

/* ============================================================================
 * Slice 7 · 音频节点 success 态播放器 + voice/duration chips + isStub 占位提示
 * 进场必读：reports/research/canvas-ui-docs/slice-7.md
 * 复用 Slice 1 的 .canvas-node-audio-player + Slice 4 的 spinner/error/thumb--running
 * 这里加：chips 行（voice/duration）+ 琥珀色 isStub 占位 chip
 * ============================================================================ */

/* audio player wrap · success 态包 <audio> + chips + stub-tag */
.canvas-node-audio-player {
  width: 100%;
  padding: 4px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.canvas-node-audio-el {
  width: 100%;
  height: 36px;
  display: block;
}

/* chips 行（voice + duration 同行，紧凑） */
.canvas-node-audio-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 0 2px;
}

.canvas-node-audio-chip {
  font-size: 10.5px;
  font-weight: 500;
  color: #6b5d8a;
  background: rgba(155, 139, 181, 0.14);
  border: 1px solid rgba(155, 139, 181, 0.20);
  padding: 2px 7px;
  border-radius: 999px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.canvas-node-audio-chip--dur {
  font-feature-settings: 'tnum';
  font-weight: 600;
}

/* isStub 占位提示 · 琥珀 amber（暖低饱和，区分 success 绿） */
.canvas-node-audio-stub-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-size: 10.5px;
  font-weight: 500;
  color: #92732a;
  background: rgba(244, 196, 96, 0.18);
  border: 1px solid rgba(244, 196, 96, 0.32);
  padding: 3px 8px;
  border-radius: 6px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  cursor: help;
}

/* ============================================================================
 * Slice 8 · Reference 引用节点 header（淡紫家族）
 * 注：Polish #1 已删 5 主节点 (image/video/audio/text/script) 的 header chrome
 *     reference 节点单独保留 header 样式（独立功能、视觉规范不变）
 * ============================================================================ */

/* reference 节点 header 基础框架（5 主节点用浮动 label 替代，本块仅 reference 用） */
.canvas-node-header {
  height: 36px;
  padding: 0 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border-radius: 12px 12px 0 0;
}

.canvas-node-header-left {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.canvas-node-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.canvas-node-header-label {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--app-text-strong, #111827);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 节点 header 配色 · 淡紫超弱底 */
.canvas-node-header--reference {
  background: rgba(155, 139, 181, 0.10);
}
.canvas-node-header--reference .canvas-node-icon {
  color: #8775a8;
}

/* reference 节点卡 · 跟其他节点一致大小，不特别处理 */
.canvas-node--reference {
  /* 继承 .canvas-node 通用样式 */
}

/* ============================================================================
 * Slice 9 · 视频合成节点（script-ffmpeg）真实现样式
 * 进场必读：reports/research/canvas-ui-docs/slice-9.md
 * 复用 Slice 6 的 .canvas-node-thumb--video 黑底 + Slice 4 的 spinner/error
 * 这里加：ffmpeg 加载/拼接进度条 + 首次下载橙色 notice + 下载按钮
 * 色系：amber 琥珀（跟 script header 同语言 #a6864d）
 * ============================================================================ */

/* video player wrap · 跟 video 节点同款（覆盖 cursor 不要 zoom-in） */
.canvas-node-script-player {
  cursor: default;
}

.canvas-node-script-player:hover {
  border-color: var(--app-border-soft, rgba(139, 157, 175, 0.10));
  box-shadow: none;
}

.canvas-node-script-player video.canvas-node-thumb-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #000;
}

/* === 首次下载提示 · 琥珀 amber 弱底 === */
.canvas-node-script-notice {
  font-size: 11px;
  font-weight: 500;
  color: #92732a;
  background: rgba(244, 196, 96, 0.14);
  border: 1px solid rgba(244, 196, 96, 0.26);
  padding: 5px 10px;
  border-radius: 6px;
  letter-spacing: 0.02em;
  line-height: 1.4;
  cursor: help;
}

/* === 进度条 · running 态显 === */
.canvas-node-script-progress {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 2px 0;
}

.canvas-node-script-progress-track {
  width: 100%;
  height: 4px;
  background: rgba(201, 168, 110, 0.18);
  border-radius: 999px;
  overflow: hidden;
}

.canvas-node-script-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #c9a86e 0%, #a6864d 100%);
  border-radius: 999px;
  transition: width 240ms cubic-bezier(0.22, 1, 0.36, 1);
}

.canvas-node-script-progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10.5px;
  color: var(--app-text-muted, #6b7280);
  letter-spacing: 0.02em;
}

.canvas-node-script-progress-phase {
  font-weight: 500;
}

.canvas-node-script-progress-pct {
  font-weight: 600;
  font-feature-settings: 'tnum';
  color: #a6864d;
}

/* === 下载按钮 · success 态显（同行带段数 chip） === */
.canvas-node-script-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 0;
}

.canvas-node-script-seg-chip {
  font-size: 10.5px;
  font-weight: 500;
  color: #92732a;
  background: rgba(244, 196, 96, 0.14);
  border: 1px solid rgba(244, 196, 96, 0.22);
  padding: 2px 7px;
  border-radius: 999px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.canvas-node-script-download {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 11.5px;
  font-weight: 500;
  color: #a6864d;
  background: var(--app-surface, #ffffff);
  border: 1px solid rgba(201, 168, 110, 0.32);
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  letter-spacing: 0.02em;
  line-height: 1.2;
  transition: background 140ms cubic-bezier(0.22, 1, 0.36, 1),
              color 140ms cubic-bezier(0.22, 1, 0.36, 1),
              border-color 140ms cubic-bezier(0.22, 1, 0.36, 1);
}

.canvas-node-script-download:hover {
  background: rgba(244, 196, 96, 0.12);
  border-color: rgba(166, 134, 77, 0.50);
  color: #8a6f3f;
}

.canvas-node-script-download-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ===== Text 节点独立架构 (B-2 2e) ============================================
 * LibTV §12.3 实证：double-click → contenteditable + viewport top RichTextToolbar
 * 用 --canvas-* token；ReactDOM root mount 到 document.body，不挂 NodeOverlayHost
 * ============================================================================ */
.canvas-text-toolbar-mount {
  position: fixed;
  inset: 0 0 auto 0;
  pointer-events: none;
  z-index: var(--canvas-z-banner);
}

.canvas-text-rich-toolbar {
  pointer-events: auto;
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
  padding: var(--canvas-space-2) var(--canvas-space-3);
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  box-shadow: var(--canvas-shadow-md);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  z-index: var(--canvas-z-banner);
  user-select: none;
  max-width: 90vw;
  overflow-x: auto;
}

.canvas-text-rich-toolbar-btn {
  padding: 4px 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-sm);
  color: var(--canvas-fg-default);
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  line-height: 1.4;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
}

.canvas-text-rich-toolbar-btn:hover {
  background: var(--canvas-bg-canvas);
  border-color: var(--canvas-border-default);
}

.canvas-text-rich-toolbar-btn--bold { font-weight: 600; }
.canvas-text-rich-toolbar-btn--italic { font-style: italic; }

.canvas-text-rich-toolbar .canvas-text-divider {
  display: inline-block;
  width: 1px;
  height: 16px;
  background: var(--canvas-border-default);
}

.canvas-text-rich-toolbar .canvas-text-exit {
  margin-left: var(--canvas-space-3);
  color: var(--canvas-fg-muted);
}

.canvas-text-rich-toolbar .canvas-text-exit:hover {
  color: var(--canvas-fg-default);
}

/* ---- 节点内 contenteditable 编辑区 ---- */
.canvas-text-contenteditable {
  min-height: 60px;
  padding: var(--canvas-space-2);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  line-height: 1.55;
  color: var(--canvas-fg-default);
  outline: none;
  border-radius: var(--canvas-radius-sm);
  background: rgba(201, 112, 100, 0.04);
  cursor: text;
  white-space: pre-wrap;
  word-break: break-word;
}

.canvas-text-contenteditable:focus {
  background: rgba(201, 112, 100, 0.08);
}

.canvas-text-contenteditable h2,
.canvas-text-contenteditable h3 {
  margin: 4px 0;
  color: var(--canvas-fg-default);
}

.canvas-text-contenteditable h2 { font-size: 1rem; font-weight: 600; }
.canvas-text-contenteditable h3 { font-size: 0.9375rem; font-weight: 600; }
.canvas-text-contenteditable p { margin: 4px 0; }
.canvas-text-contenteditable ul { margin: 4px 0; padding-left: 18px; }
.canvas-text-contenteditable hr {
  border: none;
  border-top: 1px solid var(--canvas-border-default);
  margin: 8px 0;
}

/* ---- 非编辑态 rich html 渲染 ---- */
.canvas-text-rendered {
  padding: var(--canvas-space-2);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  line-height: 1.55;
  color: var(--canvas-fg-default);
  white-space: pre-wrap;
  word-break: break-word;
}

.canvas-text-rendered h2 { font-size: 1rem; font-weight: 600; margin: 4px 0; }
.canvas-text-rendered h3 { font-size: 0.9375rem; font-weight: 600; margin: 4px 0; }
.canvas-text-rendered p { margin: 4px 0; }
.canvas-text-rendered ul { margin: 4px 0; padding-left: 18px; }
.canvas-text-rendered hr {
  border: none;
  border-top: 1px solid var(--canvas-border-default);
  margin: 8px 0;
}

/* 编辑态外框微高亮 */
.canvas-node--text-editing {
  box-shadow: 0 0 0 2px var(--canvas-primary-ring), var(--canvas-node-shadow-selected);
}

/* ============================================================================
 * Running chip · B-2 2f · 5 节点 running 态 body 中央 "生成中 X%... 取消"
 * ----------------------------------------------------------------------------
 * 复用现有 .canvas-node-thumb--running 容器（已有 position:relative），
 * 用 absolute 居中覆盖（替代原 spinner + placeholder-text）。
 * ========================================================================= */
.canvas-running-chip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 6px 12px;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-md);
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-default);
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
  z-index: var(--canvas-z-overlay-below);
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.canvas-running-cancel {
  padding: 2px 8px;
  background: transparent;
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  color: var(--canvas-fg-muted);
  line-height: 1.2;
}

.canvas-running-cancel:hover {
  background: var(--canvas-bg-canvas);
  color: var(--canvas-fg-default);
}