/* ============================================================================
 * anim-tools-canvas-node-overlay.css · Stage B-2 Slice 2b
 * ----------------------------------------------------------------------------
 * 进场必读：plans/planv5-plan-agent-team-review-twinkly-backus.md §架构 2
 *           reports/research/libtv-canvas/UI-GROUND-TRUTH.md §24.2 + §24.6
 * 设计取向：
 *   - slot CSS-only 定位 — 不用 JS 算 placement，ReactFlow zoom 时 absolute 跟随节点
 *   - 三 slot 互斥：below(image/audio/video idle) / above(video variant) / inside(剪辑)
 *   - 全用 --canvas-* token（B-0 0c 已建，玫瑰豆沙 + 冷米 + 暖色 shadow）
 * 关键约束：
 *   - 不动 anim-tools-canvas-base.css / anim-tools-canvas-nodes.css / anim-tools-canvas-panels.css
 *   - nodrag nopan nowheel 仅 marker class，无 visual style
 *   - VideoVariantToolbar / ChipSuggestions 留 2c / 2d slice
 * ============================================================================ */

/* ===========================================================================
 * 0. NodeOverlayHost · slot=above/below/inside 容器
 * =========================================================================== */

.canvas-overlay-host {
  position: absolute;
  /* 给 React Flow 节点内放置 overlay，不抢 pointer-events */
  pointer-events: auto;
  z-index: var(--canvas-z-overlay-below);
  /* 防 ReactFlow 选中态外圈遮盖 overlay */
  isolation: isolate;
}

/* below: 节点下方 -bottom-4 translate-y-full -translate-x-1/2 */
.canvas-overlay-below {
  bottom: -16px;
  left: 50%;
  transform: translate(-50%, 100%);
  z-index: var(--canvas-z-overlay-below);
}

/* above: 节点上方 origin-bottom（B-2 2c VideoVariantToolbar 用，本 slice 仅占 class） */
.canvas-overlay-above {
  top: 0;
  left: 50%;
  transform: translate(-50%, -100%);
  transform-origin: bottom center;
  z-index: var(--canvas-z-overlay-above);
  /* 上方 toolbar gap 实证 73px（§24.5），用 padding-bottom 顶起 */
  padding-bottom: 8px;
}

/* inside: 节点 body 内部替换（B-3 D mode 剪辑用，本 slice 仅占 class） */
.canvas-overlay-inside {
  position: relative;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: var(--canvas-z-overlay-below);
}

/* nodrag / nopan / nowheel · ReactFlow 跳过事件 marker class，无 visual */
.nodrag {}
.nopan {}
.nowheel {}

/* ===========================================================================
 * 1. InlineEditor 主容器 · LibTV §24.2 实证 640x213
 * =========================================================================== */

.canvas-inline-editor {
  width: 640px;
  /* Polish #5: bg 纯白 / border 0.5px hair / shadow 0 4px 10px / radius 12px */
  background: var(--canvas-inline-bg);
  border: 0.5px solid var(--canvas-inline-border);
  border-radius: var(--canvas-inline-radius);
  box-shadow: var(--canvas-inline-shadow);
  padding: var(--canvas-space-3);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  display: flex;
  flex-direction: column;
  gap: var(--canvas-space-2);
  /* Polish #9: enter/exit transition + scale fade */
  transition: box-shadow var(--canvas-transition-fast),
              transform 150ms cubic-bezier(0, 0, 0.2, 1),
              opacity 150ms cubic-bezier(0, 0, 0.2, 1);
  box-sizing: border-box;
  overflow: hidden;
}

.canvas-inline-editor:hover {
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.08);
}

/* G-6: 上游 context hint · 显当前节点上游节点统计（细字 + 半透明） */
.canvas-inline-upstream-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 6px;
  font-size: 11px;
  color: var(--canvas-fg-subtle, #6B6B6B);
  flex-wrap: wrap;
}
.canvas-inline-upstream-label {
  letter-spacing: 0.04em;
}
.canvas-inline-upstream-chip {
  padding: 2px 8px;
  background: var(--canvas-bg-canvas, #F5F5F5);
  border-radius: 999px;
  font-size: 11px;
  color: var(--canvas-fg-default, #1F1F1F);
}

/* ===========================================================================
 * 2. 顶行 3 chip + add + fullscreen icon
 * =========================================================================== */

.canvas-inline-top-row {
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
  /* 实证布局：3 chip(48x48) 左对齐 + add chip + 右侧 fullscreen 推到末尾 */
}

.canvas-inline-chip {
  /* base chip：复用 LibTV §24.2 32px 高 / 48x48 上排 chip 中间值 */
  padding: 6px 12px;
  min-height: 32px;
  background: var(--canvas-chip-bg);
  border: 1px solid var(--canvas-chip-border);
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-chip-fg);
  font-size: var(--canvas-text-xs);
  font-family: var(--canvas-font-family);
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast);
  /* 防长文 chip 撑爆容器（积分 / 模型名等） */
  white-space: nowrap;
  /* button reset */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  line-height: 1;
  user-select: none;
}

.canvas-inline-chip:hover {
  background: var(--canvas-chip-bg-hover);
  border-color: var(--canvas-border-strong);
  box-shadow: var(--canvas-chip-shadow);
}

.canvas-inline-chip:active {
  background: var(--canvas-chip-bg-active);
  color: var(--canvas-chip-fg-active);
  border-color: var(--canvas-primary-active);
}

.canvas-inline-chip:focus-visible {
  outline: none;
  border-color: var(--canvas-border-focus);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

/* add chip 偏小 / 圆 */
.canvas-inline-chip-add {
  padding: 6px 10px;
  font-size: var(--canvas-text-sm);
  font-weight: 500;
}

/* fullscreen icon · 右侧推到末尾 */
.canvas-inline-fullscreen {
  margin-left: auto;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-sm);
  color: var(--canvas-fg-subtle);
  cursor: pointer;
  font-size: var(--canvas-text-base);
  transition: background var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
  /* button reset */
  padding: 0;
  user-select: none;
}

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

.canvas-inline-fullscreen:focus-visible {
  outline: none;
  border-color: var(--canvas-border-focus);
  background: var(--canvas-hover-bg);
}

/* ===========================================================================
 * 3. textarea 区 · MentionTextarea 或 fallback plain textarea 共用 style
 * =========================================================================== */

.canvas-inline-textarea-row {
  display: flex;
  width: 100%;
}

/* plain fallback textarea + MentionTextarea 内 .canvas-panel-textarea 都套这套 */
.canvas-inline-textarea,
.canvas-inline-textarea-row .canvas-panel-textarea {
  width: 100%;
  min-height: 80px;
  max-height: 200px;
  background: var(--canvas-bg-canvas);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  padding: var(--canvas-space-2) var(--canvas-space-3);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  line-height: 1.5;
  color: var(--canvas-fg-default);
  resize: vertical;
  transition: border-color var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast),
              background var(--canvas-transition-fast);
  box-sizing: border-box;
}

.canvas-inline-textarea::placeholder,
.canvas-inline-textarea-row .canvas-panel-textarea::placeholder {
  color: var(--canvas-fg-muted);
}

.canvas-inline-textarea:focus,
.canvas-inline-textarea-row .canvas-panel-textarea:focus {
  outline: none;
  border-color: var(--canvas-border-focus);
  background: var(--canvas-bg-card);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

.canvas-inline-textarea:hover:not(:focus),
.canvas-inline-textarea-row .canvas-panel-textarea:hover:not(:focus) {
  border-color: var(--canvas-border-strong);
}

/* ===========================================================================
 * 4. 底行 · Model / Aspect / Camera / Qty / 积分 / Run
 * =========================================================================== */

.canvas-inline-bottom-row {
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
  /* 实证布局：模型 flex:1 + 其他 chip 自适应 + 积分 + Run 推到末尾 */
}

/* Model chip · flex:1 占主要宽度 */
.canvas-inline-model {
  flex: 1;
  min-width: 0;
  justify-content: flex-start;
  /* 防长模型名 ellipsis */
  overflow: hidden;
}

.canvas-inline-model-label {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  /* 文字给 ▾ 留空间 */
  max-width: 100%;
}

.canvas-inline-caret {
  margin-left: 4px;
  color: var(--canvas-fg-subtle);
  font-size: var(--canvas-text-xs);
  /* 防 chip:active 时 caret 反白歪掉 */
  flex-shrink: 0;
}

/* Aspect / Camera 中等宽度 */
.canvas-inline-aspect {
  flex-shrink: 0;
}

.canvas-inline-camera {
  width: 32px;
  height: 32px;
  padding: 0;
  flex-shrink: 0;
}

/* Qty input · 替代 chip 形式（实证文案 "1张"，含 number input + 后缀） */
.canvas-inline-qty {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px 8px;
  background: var(--canvas-chip-bg);
  border: 1px solid var(--canvas-chip-border);
  border-radius: var(--canvas-radius-md);
  min-height: 32px;
  flex-shrink: 0;
  transition: border-color var(--canvas-transition-fast);
}

.canvas-inline-qty:hover {
  border-color: var(--canvas-border-strong);
}

.canvas-inline-qty:focus-within {
  border-color: var(--canvas-border-focus);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

.canvas-inline-qty-input {
  width: 28px;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-default);
  text-align: right;
  /* 隐藏 number input 上下箭头（webkit + firefox） */
  -webkit-appearance: textfield;
  -moz-appearance: textfield;
  appearance: textfield;
  padding: 0;
}

.canvas-inline-qty-input::-webkit-outer-spin-button,
.canvas-inline-qty-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.canvas-inline-qty-suffix {
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-subtle);
  user-select: none;
}

/* 积分 chip · ⚡ N · 玫瑰豆沙 soft tint */
.canvas-inline-cost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  min-height: 32px;
  background: var(--canvas-primary-soft);
  color: var(--canvas-primary-filled);
  border: 1px solid var(--canvas-border-soft);
  border-radius: var(--canvas-radius-md);
  font-size: var(--canvas-text-xs);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  user-select: none;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
}

/* B-5 5c · 余额不足 · 玫瑰预警色 + 可点（→ 申请充值 toast） */
.canvas-inline-cost.is-insufficient {
  color: #C97064;
  border-color: #C97064;
  background: rgba(201, 112, 100, 0.08);
}

.canvas-inline-cost.is-insufficient:hover {
  background: rgba(201, 112, 100, 0.14);
}

/* Run button · 主色填充 + ↑ */
.canvas-inline-run {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 16px;
  min-height: 32px;
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-md);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast),
              transform var(--canvas-transition-fast);
  /* button reset */
  user-select: none;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1;
}

.canvas-inline-run:hover {
  background: var(--canvas-primary-hover);
  border-color: var(--canvas-primary-hover);
  box-shadow: var(--canvas-shadow-md);
}

.canvas-inline-run:active {
  background: var(--canvas-primary-active);
  border-color: var(--canvas-primary-active);
  transform: translateY(1px);
  box-shadow: var(--canvas-shadow-sm);
}

.canvas-inline-run:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--canvas-primary-ring);
}

.canvas-inline-run:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--canvas-border-default);
  border-color: var(--canvas-border-default);
  color: var(--canvas-fg-muted);
  box-shadow: none;
  transform: none;
}

.canvas-inline-run-label {
  font-weight: 500;
}

.canvas-inline-run-arrow {
  font-size: var(--canvas-text-base);
  line-height: 1;
}

/* ===========================================================================
 * 5. 三 slot 边界 case · viewport 跑出兜底 + zoom 缩放
 * =========================================================================== */

/* below slot 节点宽度超 640px 时 inline editor 居中对齐 */
.canvas-overlay-below .canvas-inline-editor {
  /* 默认 width:640px 已固定，节点宽 < 640 时 transform translateX(-50%) 居中
     节点宽 > 640 时 inline editor 仍居中（CSS 居中靠 left:50% + translate） */
  margin: 0 auto;
}

/* 防 zoom 缩放时 inline editor 字体失真 — counter-scale 暂不做（B-5 5b transform-zoom 接） */
/* TODO B-5 5b: ReactFlow zoom < 0.5 时 inline editor counter-scale 防字体太小 */

/* ===========================================================================
 * 6. 响应式 · viewport < 640+padding 节点 inline editor 缩小
 * =========================================================================== */

@media (max-width: 720px) {
  /* 小屏 viewport 兜底 — inline editor 最多 viewport 宽度 - 32px gutter */
  .canvas-inline-editor {
    width: min(640px, calc(100vw - 32px));
  }

  /* 小屏 below slot 横向不要超 viewport */
  .canvas-overlay-below {
    /* 保留居中 transform，但允许 inline editor 横溢出兜底 */
    max-width: calc(100vw - 32px);
  }
}

/* ===========================================================================
 * 7. 节点选中态联动 · 节点 :selected 时 overlay 显示
 * =========================================================================== */
/* 注：B-2 2f 才真接 node react-flow__node.selected → overlay mount 条件
 *     本 slice 不挂任何节点 — overlay 暂时 always-mount 由调用方控制
 *     这里只占 CSS class hook 防 2f 改 nodes .js 时漏 fade-in animation */

@keyframes canvas-overlay-fade-in {
  from { opacity: 0; transform: translate(-50%, calc(100% + 8px)); }
  to   { opacity: 1; transform: translate(-50%, 100%); }
}

@keyframes canvas-overlay-fade-in-above {
  from { opacity: 0; transform: translate(-50%, calc(-100% + 8px)); }
  to   { opacity: 1; transform: translate(-50%, -100%); }
}

.canvas-overlay-below {
  animation: canvas-overlay-fade-in var(--canvas-transition-fast) var(--canvas-ease-out);
}

.canvas-overlay-above {
  animation: canvas-overlay-fade-in-above var(--canvas-transition-fast) var(--canvas-ease-out);
}

.canvas-overlay-inside {
  animation: none;
  /* inside slot 节点 body 替换不 fade 防视觉跳变（B-3 D mode 剪辑加 200ms 高度动画） */
}

/* ===========================================================================
 * 8. dev/debug · 可选高亮 overlay 边界（DevTools 排查布局时打开）
 * =========================================================================== */

/* body[data-canvas-debug-overlay] .canvas-overlay-host {
     outline: 1px dashed rgba(201, 112, 100, 0.4);
   } */

/* ===========================================================================
 * 9. VideoVariantToolbar (B-2 2c) · video 已生成节点 above slot · 555x41 实证
 * =========================================================================== */

.canvas-video-variant-toolbar {
  display: inline-flex;
  align-items: center;
  gap: var(--canvas-space-1);
  padding: 0;
  /* Polish #6: 容器 transparent · 无 border / 无 shadow · chip 自己处理 hover bg */
  background: transparent;
  border: 0;
  box-shadow: none;
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  white-space: nowrap;
  box-sizing: border-box;
  min-height: 32px;
  /* Polish #9: enter/exit transition + scale fade */
  transition: transform 150ms cubic-bezier(0, 0, 0.2, 1),
              opacity 150ms cubic-bezier(0, 0, 0.2, 1);
}

/* Polish #4: variant chip control 类 · transparent + 0 border + 8px radius + hover bg-only */
.canvas-variant-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  padding: 0 var(--canvas-space-2);
  background: transparent;
  border: 0;
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-fg-default);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--canvas-text-xs);
  line-height: 1;
  user-select: none;
  white-space: nowrap;
  transition: background-color var(--canvas-transition-fast);
}

.canvas-variant-chip:hover {
  background: var(--canvas-chip-hover-bg, rgba(0, 0, 0, 0.05));
}

.canvas-variant-chip:active,
.canvas-variant-chip[aria-pressed="true"],
.canvas-variant-chip.is-active {
  background: var(--canvas-chip-active-bg, rgba(201, 112, 100, 0.10));
  color: var(--canvas-primary-filled);
}

.canvas-variant-chip:focus-visible {
  outline: none;
  border-color: var(--canvas-border-focus);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

/* disabled · Phase 2.5 占位 · pointer-events 保留以便 tooltip 显示 */
.canvas-variant-chip.disabled,
.canvas-variant-chip[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: auto;
  color: var(--canvas-fg-muted);
}

.canvas-variant-chip.disabled:hover,
.canvas-variant-chip[disabled]:hover {
  background: transparent;
  border-color: var(--canvas-border-default);
  box-shadow: none;
}

/* ⬇ / ⛶ 图标按钮 · icon-only · margin-left:auto 推右 */
.canvas-variant-icon {
  margin-left: var(--canvas-space-2);
  padding: 4px 8px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-sm);
  color: var(--canvas-fg-default);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  min-height: 28px;
  transition: background var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
}

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

.canvas-variant-icon:focus-visible {
  outline: none;
  border-color: var(--canvas-border-focus);
  background: var(--canvas-hover-bg);
}

/* ⬇ 紧随 5 chip 之后，第一个 icon 不需要额外 margin（gap 已分隔） */
.canvas-variant-chip + .canvas-variant-icon {
  margin-left: var(--canvas-space-2);
}

/* ===========================================================================
 * 10. NodeChipSuggestions (Phase D 真抄 LibTV) · body 内垂直 list chip suggestions
 * ---------------------------------------------------------------------------
 * 真截图：⬆ 图生图 / HD 图片高清 / ⬢ 首尾帧生成视频 / 「尝试：」前缀
 * 垂直 list + icon prefix + 具体 action 名 + transparent + hover bg-only
 * =========================================================================== */

.canvas-chip-suggestions-vertical {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: var(--canvas-space-2);
  font-family: var(--canvas-font-family);
  width: 100%;
}

.canvas-chip-suggestions-prefix {
  font-size: 13px;
  color: var(--canvas-fg-subtle);
  line-height: 1.2;
  padding: 0 4px;
}

.canvas-chip-suggestion-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: transparent;
  border: 0;
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-fg-default);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.3;
  text-align: left;
  user-select: none;
  transition: background-color var(--canvas-transition-fast);
  width: 100%;
}

.canvas-chip-suggestion-row:hover {
  background: var(--canvas-chip-hover-bg, rgba(0, 0, 0, 0.05));
}

.canvas-chip-suggestion-row:active {
  background: var(--canvas-chip-active-bg, rgba(201, 112, 100, 0.10));
}

.canvas-chip-suggestion-row:focus-visible {
  outline: none;
  background: var(--canvas-chip-hover-bg, rgba(0, 0, 0, 0.05));
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

.canvas-chip-suggestion-icon {
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
  width: 16px;
  text-align: center;
  color: var(--canvas-fg-subtle);
}

.canvas-chip-suggestion-label {
  font-size: 13px;
  color: var(--canvas-fg-default);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ⬆ 上传 chip · Phase D-4 独立浮动挂在节点上方（slot='above'） */
.canvas-upload-chip-above {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.canvas-upload-chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  height: 24px;
  background: var(--canvas-bg-card, #fff);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-primary-filled);
  cursor: pointer;
  font-family: var(--canvas-font-family);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  user-select: none;
  white-space: nowrap;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
}

.canvas-upload-chip-btn:hover {
  background: rgba(201, 112, 100, 0.08);
  border-color: var(--canvas-primary-hover);
  color: var(--canvas-primary-hover);
}

.canvas-upload-chip-btn:active {
  background: rgba(201, 112, 100, 0.16);
  border-color: var(--canvas-primary-active);
  color: var(--canvas-primary-active);
}

.canvas-upload-chip-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

/* ===== B banner mode (B-3 3b · 标记 chip) =====
 * viewport fixed top z=50 全宽 banner + cursor crosshair + image hover outline
 * ref: research/libtv-canvas/UI-GROUND-TRUTH.md §23-24
 */
.canvas-mode-banner-mount {
  /* 容器自身不占视觉空间，banner 实体走 fixed 定位 */
  position: static;
}

.canvas-mode-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--canvas-z-banner);
  background: rgba(201, 112, 100, 0.95);
  color: var(--canvas-fg-on-brand);
  padding: var(--canvas-space-2) var(--canvas-space-4);
  display: flex;
  align-items: center;
  gap: var(--canvas-space-3);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  box-shadow: var(--canvas-shadow-md);
  user-select: none;
  animation: canvas-banner-slide-down var(--canvas-transition-normal) var(--canvas-ease-out);
}

@keyframes canvas-banner-slide-down {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.canvas-mode-banner-icon {
  font-size: 18px;
  line-height: 1;
}

.canvas-mode-banner-title {
  flex: 1;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.canvas-mode-banner-btn {
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--canvas-fg-on-brand);
  padding: 4px 12px;
  border-radius: var(--canvas-radius-sm);
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast);
}

.canvas-mode-banner-btn:hover {
  background: rgba(255, 255, 255, 0.28);
  border-color: rgba(255, 255, 255, 0.45);
}

.canvas-mode-banner-btn:active {
  background: rgba(255, 255, 255, 0.36);
}

.canvas-mode-banner-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.canvas-mode-banner-btn-exit {
  /* 退出按钮稍强一点视觉权重 */
  background: rgba(255, 255, 255, 0.24);
}

/* body 进入 banner mode → cursor crosshair + 节点内图片元素 hover 高亮 */
body.canvas-banner-mode-on {
  cursor: crosshair;
}

body.canvas-banner-mode-on .canvas-node img,
body.canvas-banner-mode-on .canvas-node-thumb-img,
body.canvas-banner-mode-on .canvas-node-preview-img {
  outline: 2px dashed rgba(201, 112, 100, 0.6);
  outline-offset: -2px;
  transition: outline-color var(--canvas-transition-fast);
  cursor: crosshair;
}

body.canvas-banner-mode-on .canvas-node img:hover,
body.canvas-banner-mode-on .canvas-node-thumb-img:hover,
body.canvas-banner-mode-on .canvas-node-preview-img:hover {
  outline-color: var(--canvas-primary-filled);
}

/* ===== C cursor-follow tooltip mode (B-3 3c · 聚焦 chip) =====
 * cursor 旁 12/12 偏移 viewport overlay · pointer-events:none 不抢鼠标
 * mount: canvasChipMode.enter('tooltip') · unmount: exit / ESC
 * ref: research/libtv-canvas/UI-GROUND-TRUTH.md §22 chip mode 实证
 */
.canvas-mode-tooltip-mount {
  /* React root container · 无可视样式 · tooltip 实体走 fixed 定位 */
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  pointer-events: none;
  z-index: var(--canvas-z-banner);
}

.canvas-mode-tooltip {
  position: fixed;
  z-index: var(--canvas-z-banner);
  pointer-events: none;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  box-shadow: var(--canvas-shadow-md);
  padding: var(--canvas-space-2) var(--canvas-space-3);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-default);
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
  user-select: none;
  white-space: nowrap;
  transition: opacity var(--canvas-transition-fast);
}

.canvas-mode-tooltip-icon {
  font-size: 14px;
  line-height: 1;
}

.canvas-mode-tooltip-text {
  line-height: 1.2;
}

/* body 进入 tooltip mode → cursor crosshair + 节点图虚线提示可框选 */
body.canvas-tooltip-mode-on {
  cursor: crosshair;
}

body.canvas-tooltip-mode-on .canvas-node img,
body.canvas-tooltip-mode-on .canvas-node-thumb-img,
body.canvas-tooltip-mode-on .canvas-node-preview-img {
  outline: 2px dotted rgba(201, 112, 100, 0.5);
  outline-offset: -2px;
  cursor: crosshair;
}

/* ===========================================================================
 * 11. D inline-expand clip-editor (B-3 3d) · video 节点 body 内嵌剪辑器
 * ---------------------------------------------------------------------------
 * mount: canvas-node-video.js 检查 chipMode.isActive('inline-expand')
 *        && activeNodeId === nodeId 时替换 body 为 <VideoClipEditor>
 * 行为：双 slider trim + vol slider + 首尾帧缩略图 + 取消/完成 button
 * =========================================================================== */

.canvas-mode-clip-editor {
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-md);
  padding: var(--canvas-space-3);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  box-shadow: var(--canvas-shadow-md);
  width: 100%;
  box-sizing: border-box;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  gap: var(--canvas-space-2);
  user-select: none;
}

.canvas-mode-clip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 500;
  margin-bottom: var(--canvas-space-2);
  padding-bottom: var(--canvas-space-2);
  border-bottom: 1px solid var(--canvas-border-default);
}

.canvas-mode-clip-title {
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
}

.canvas-mode-clip-close {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--canvas-fg-muted);
  padding: 2px 8px;
  line-height: 1;
  transition: color var(--canvas-transition-fast);
}

.canvas-mode-clip-close:hover {
  color: var(--canvas-fg-default);
}

.canvas-mode-clip-close:focus-visible {
  outline: none;
  color: var(--canvas-primary-filled);
}

.canvas-mode-clip-frames {
  display: flex;
  gap: var(--canvas-space-3);
  justify-content: space-between;
  margin-bottom: var(--canvas-space-2);
}

.canvas-mode-clip-frame {
  flex: 1;
  aspect-ratio: 16 / 9;
  background: var(--canvas-bg-canvas);
  border: 1px dashed var(--canvas-border-default);
  border-radius: var(--canvas-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.canvas-mode-clip-frame-canvas {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.canvas-mode-clip-frame-label {
  position: absolute;
  top: 4px;
  left: 6px;
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-muted);
  background: rgba(255, 255, 255, 0.85);
  padding: 1px 6px;
  border-radius: 2px;
  z-index: 1;
}

.canvas-mode-clip-timeline {
  position: relative;
  padding: var(--canvas-space-2) 0;
  margin-bottom: var(--canvas-space-2);
}

.canvas-mode-clip-slider {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 4px;
  background: var(--canvas-border-default);
  border-radius: 2px;
  outline: none;
  margin: 0;
}

.canvas-mode-clip-slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: var(--canvas-primary-filled);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--canvas-bg-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.16);
}

.canvas-mode-clip-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--canvas-primary-filled);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--canvas-bg-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.16);
}

.canvas-mode-clip-slider:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px var(--canvas-primary-ring);
}

.canvas-mode-clip-slider:focus-visible::-moz-range-thumb {
  box-shadow: 0 0 0 3px var(--canvas-primary-ring);
}

.canvas-mode-clip-slider-start,
.canvas-mode-clip-slider-end {
  position: absolute;
  left: 0;
  right: 0;
  top: 12px;
  pointer-events: none;
}

.canvas-mode-clip-slider-start::-webkit-slider-thumb,
.canvas-mode-clip-slider-end::-webkit-slider-thumb {
  pointer-events: auto;
}

.canvas-mode-clip-slider-start::-moz-range-thumb,
.canvas-mode-clip-slider-end::-moz-range-thumb {
  pointer-events: auto;
}

.canvas-mode-clip-slider-end {
  /* end slider 透明 track 让叠加底层 start slider 可见 */
  background: transparent;
}

.canvas-mode-clip-timeline-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--canvas-space-2);
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-muted);
}

.canvas-mode-clip-time-tag {
  white-space: nowrap;
}

.canvas-mode-clip-time-start,
.canvas-mode-clip-time-end {
  color: var(--canvas-primary-filled);
  font-weight: 500;
}

.canvas-mode-clip-vol {
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
  margin-bottom: var(--canvas-space-2);
}

.canvas-mode-clip-vol-icon {
  font-size: 14px;
  line-height: 1;
}

.canvas-mode-clip-vol-label {
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-subtle);
  min-width: 28px;
}

.canvas-mode-clip-slider-vol {
  flex: 1;
}

.canvas-mode-clip-vol-value {
  min-width: 36px;
  text-align: right;
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-muted);
}

.canvas-mode-clip-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--canvas-space-2);
  padding-top: var(--canvas-space-2);
  border-top: 1px solid var(--canvas-border-default);
}

.canvas-mode-clip-cancel,
.canvas-mode-clip-confirm {
  padding: 6px 16px;
  border-radius: var(--canvas-radius-md);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  cursor: pointer;
  line-height: 1;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast);
}

.canvas-mode-clip-cancel {
  background: transparent;
  border: 1px solid var(--canvas-border-default);
  color: var(--canvas-fg-default);
}

.canvas-mode-clip-cancel:hover {
  background: var(--canvas-bg-canvas);
  border-color: var(--canvas-border-strong);
}

.canvas-mode-clip-cancel:focus-visible {
  outline: none;
  border-color: var(--canvas-border-focus);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

.canvas-mode-clip-confirm {
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  border: 1px solid var(--canvas-primary-filled);
  font-weight: 500;
}

.canvas-mode-clip-confirm:hover {
  background: var(--canvas-primary-hover);
  border-color: var(--canvas-primary-hover);
  box-shadow: var(--canvas-shadow-md);
}

.canvas-mode-clip-confirm:active {
  background: var(--canvas-primary-active);
  border-color: var(--canvas-primary-active);
}

.canvas-mode-clip-confirm:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--canvas-primary-ring);
}

/* Body 进入 clip-mode → variant toolbar hide（B-2 2f wire-up 接此 className） */
.canvas-node--clip-mode .canvas-video-variant-toolbar {
  display: none;
}

/* ===========================================================================
 * 12. B-4 4c · 项目名 inline edit · LibTV §17.3 实证 maxLength=120
 * ---------------------------------------------------------------------------
 * 位置：canvas-stage 顶部居中 · 跟 ReactFlow viewport 同层
 * span → input：click 进入 / Enter+blur 保存 / ESC 取消
 * =========================================================================== */

.canvas-project-name {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--canvas-z-banner);
  pointer-events: auto;
  user-select: none;
}

.canvas-project-name-span {
  display: inline-block;
  padding: 4px 12px;
  background: var(--canvas-bg-card);
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-sm);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  cursor: text;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-shadow: var(--canvas-shadow-sm);
  transition: border-color var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast);
}

.canvas-project-name-span:hover {
  border-color: var(--canvas-border-default);
  box-shadow: var(--canvas-shadow-md);
}

.canvas-project-name-input {
  padding: 4px 12px;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: var(--canvas-radius-sm);
  font-family: var(--canvas-font-family);
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  outline: none;
  caret-color: var(--canvas-primary-filled);
  min-width: 200px;
  max-width: 360px;
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

.canvas-project-name-input::selection {
  background: var(--canvas-primary-soft);
  color: var(--canvas-fg-default);
}

/* ===========================================================================
 * 13. B-4 4c · 历史资产 modal · LibTV §17.7 实证 全屏 + 时间分组 + hover overlay
 * ---------------------------------------------------------------------------
 * mount: window.canvasHistoryModal.open() · 独立 ReactDOM root 挂 document.body
 * =========================================================================== */

.canvas-history-mount {
  position: fixed;
  inset: 0;
  z-index: var(--canvas-z-modal);
  font-family: var(--canvas-font-family);
}

.canvas-history-mask {
  position: fixed;
  inset: 0;
  background: rgba(42, 38, 36, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: canvas-history-fade-in var(--canvas-transition-fast) var(--canvas-ease-out);
}

@keyframes canvas-history-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.canvas-history-modal {
  width: min(1080px, calc(100vw - 64px));
  height: min(720px, calc(100vh - 64px));
  background: var(--canvas-bg-card);
  border-radius: var(--canvas-radius-lg);
  box-shadow: var(--canvas-shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--canvas-fg-default);
}

.canvas-history-header {
  display: flex;
  align-items: center;
  gap: var(--canvas-space-4);
  padding: var(--canvas-space-4) var(--canvas-space-5);
  border-bottom: 1px solid var(--canvas-border-default);
  background: var(--canvas-bg-card);
  flex-shrink: 0;
}

.canvas-history-title {
  font-size: var(--canvas-text-lg);
  font-weight: 600;
  margin: 0;
  color: var(--canvas-fg-default);
}

.canvas-history-tabs {
  display: flex;
  gap: var(--canvas-space-1);
  margin-left: var(--canvas-space-4);
}

.canvas-history-tab {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-md);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-subtle);
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              color var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

.canvas-history-tab--active {
  background: var(--canvas-primary-soft);
  color: var(--canvas-primary-filled);
  border-color: var(--canvas-border-soft);
}

.canvas-history-tab-count {
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-muted);
}

.canvas-history-tab--active .canvas-history-tab-count {
  color: var(--canvas-primary-filled);
}

.canvas-history-header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--canvas-space-2);
}

.canvas-history-batch-toggle {
  padding: 6px 14px;
  background: var(--canvas-bg-canvas);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast);
}

.canvas-history-batch-toggle:hover {
  background: var(--canvas-hover-bg);
  border-color: var(--canvas-border-strong);
}

.canvas-history-batch-toggle--on {
  background: var(--canvas-primary-soft);
  color: var(--canvas-primary-filled);
  border-color: var(--canvas-primary-filled);
}

.canvas-history-close {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-md);
  color: var(--canvas-fg-subtle);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
}

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

/* 批量 bar */
.canvas-history-batch-bar {
  display: flex;
  align-items: center;
  gap: var(--canvas-space-3);
  padding: var(--canvas-space-2) var(--canvas-space-5);
  background: var(--canvas-primary-soft);
  border-bottom: 1px solid var(--canvas-border-soft);
  font-size: var(--canvas-text-sm);
}

.canvas-history-batch-count {
  font-weight: 500;
  color: var(--canvas-primary-filled);
}

.canvas-history-batch-btn {
  padding: 4px 12px;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-sm);
  font-family: inherit;
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-default);
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast);
}

.canvas-history-batch-btn:hover {
  background: var(--canvas-hover-bg);
  border-color: var(--canvas-border-strong);
}

.canvas-history-batch-btn-danger {
  /* 蓝色 primary 批量删除（§17.13 mixed convention 数据删除蓝 = UTEN 玫瑰豆沙） */
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  border-color: var(--canvas-primary-filled);
}

.canvas-history-batch-btn-danger:hover {
  background: var(--canvas-primary-hover);
  border-color: var(--canvas-primary-hover);
}

/* body · 时间分组 + 网格 */
.canvas-history-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--canvas-space-4) var(--canvas-space-5);
}

.canvas-history-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--canvas-fg-muted);
  font-size: var(--canvas-text-sm);
}

.canvas-history-group {
  margin-bottom: var(--canvas-space-5);
}

.canvas-history-group-header {
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-subtle);
  margin-bottom: var(--canvas-space-3);
  padding-bottom: var(--canvas-space-1);
  border-bottom: 1px solid var(--canvas-border-default);
}

.canvas-history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--canvas-space-3);
}

/* thumbnail · hover 显 overlay / 批量 mode 显 checkbox */
.canvas-history-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--canvas-bg-canvas);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast);
}

.canvas-history-thumb:hover {
  border-color: var(--canvas-primary-filled);
  box-shadow: var(--canvas-shadow-md);
}

.canvas-history-thumb--checked {
  border-color: var(--canvas-primary-filled);
  box-shadow: 0 0 0 2px var(--canvas-primary-ring);
}

.canvas-history-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--canvas-space-2);
  color: var(--canvas-fg-muted);
}

.canvas-history-thumb-icon {
  font-size: 32px;
  line-height: 1;
}

.canvas-history-thumb-label {
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-subtle);
  text-align: center;
  padding: 0 var(--canvas-space-2);
  word-break: break-all;
}

/* hover actions overlay · 3 button 查看 / 使用 / 🗑 */
.canvas-history-thumb-actions {
  position: absolute;
  inset: 0;
  background: rgba(42, 38, 36, 0.62);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--canvas-space-2);
  opacity: 0;
  transition: opacity var(--canvas-transition-fast);
}

.canvas-history-thumb:hover .canvas-history-thumb-actions {
  opacity: 1;
}

.canvas-history-thumb-btn {
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid transparent;
  border-radius: var(--canvas-radius-sm);
  font-family: inherit;
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-default);
  cursor: pointer;
  transition: background var(--canvas-transition-fast);
}

.canvas-history-thumb-btn:hover {
  background: #fff;
}

.canvas-history-thumb-btn-primary {
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
}

.canvas-history-thumb-btn-primary:hover {
  background: var(--canvas-primary-hover);
}

.canvas-history-thumb-btn-icon {
  width: 26px;
  height: 26px;
  background: rgba(255, 255, 255, 0.92);
  border: none;
  border-radius: var(--canvas-radius-sm);
  font-size: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--canvas-transition-fast);
}

.canvas-history-thumb-btn-icon:hover {
  background: #fff;
}

/* checkbox · 左上角 · 批量 mode */
.canvas-history-thumb-checkbox {
  position: absolute;
  top: 8px;
  left: 8px;
  cursor: pointer;
  z-index: 2;
}

.canvas-history-thumb-checkbox input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.canvas-history-thumb-checkbox-box {
  display: block;
  width: 20px;
  height: 20px;
  background: rgba(255, 255, 255, 0.92);
  border: 1.5px solid var(--canvas-border-strong);
  border-radius: var(--canvas-radius-sm);
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast);
  position: relative;
}

.canvas-history-thumb-checkbox input:checked + .canvas-history-thumb-checkbox-box {
  background: var(--canvas-primary-filled);
  border-color: var(--canvas-primary-filled);
}

.canvas-history-thumb-checkbox input:checked + .canvas-history-thumb-checkbox-box::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 11px;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(45deg);
}

/* 删除 confirm modal · 蓝 primary · §17.13 mixed convention 数据删除蓝 = UTEN 玫瑰豆沙 */
.canvas-history-confirm-mask {
  position: fixed;
  inset: 0;
  background: rgba(42, 38, 36, 0.55);
  z-index: calc(var(--canvas-z-modal) + 10);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: canvas-history-fade-in var(--canvas-transition-fast) var(--canvas-ease-out);
}

.canvas-history-confirm-modal {
  width: 360px;
  background: var(--canvas-bg-card);
  border-radius: var(--canvas-radius-md);
  box-shadow: var(--canvas-shadow-xl);
  padding: var(--canvas-space-5);
  display: flex;
  flex-direction: column;
  gap: var(--canvas-space-3);
}

.canvas-history-confirm-title {
  font-size: var(--canvas-text-base);
  font-weight: 600;
  color: var(--canvas-fg-default);
}

.canvas-history-confirm-body {
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-subtle);
  line-height: 1.5;
}

.canvas-history-confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--canvas-space-2);
  margin-top: var(--canvas-space-2);
}

.canvas-history-confirm-btn {
  padding: 6px 18px;
  border-radius: var(--canvas-radius-sm);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              border-color var(--canvas-transition-fast);
}

.canvas-history-confirm-cancel {
  background: transparent;
  border: 1px solid var(--canvas-border-default);
  color: var(--canvas-fg-default);
}

.canvas-history-confirm-cancel:hover {
  background: var(--canvas-hover-bg);
  border-color: var(--canvas-border-strong);
}

.canvas-history-confirm-delete {
  background: var(--canvas-confirm-blue);
  color: var(--canvas-fg-on-brand);
  border: 1px solid var(--canvas-confirm-blue);
  font-weight: 500;
}

.canvas-history-confirm-delete:hover {
  background: var(--canvas-primary-hover);
  border-color: var(--canvas-primary-hover);
}

/* ===========================================================================
 * 14. B-4 4c · edge auto-wire menu · LibTV §15.8 推后段 (UTEN 简化版)
 * ---------------------------------------------------------------------------
 * EdgeAutoWireBadge: hover edge midpoint 显 + icon
 * AutoWireMenu: click badge → 6 节点类型 menu
 * =========================================================================== */

.canvas-edge-autowire-badge {
  position: fixed;
  z-index: var(--canvas-z-banner);
  width: 24px;
  height: 24px;
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-primary-filled);
  border-radius: 50%;
  color: var(--canvas-primary-filled);
  font-family: var(--canvas-font-family);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  box-shadow: var(--canvas-shadow-md);
  transition: background var(--canvas-transition-fast),
              transform var(--canvas-transition-fast),
              box-shadow var(--canvas-transition-fast);
}

.canvas-edge-autowire-badge:hover {
  background: var(--canvas-primary-filled);
  color: var(--canvas-fg-on-brand);
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: var(--canvas-shadow-lg);
}

.canvas-edge-autowire-menu {
  position: fixed;
  z-index: var(--canvas-z-banner);
  background: var(--canvas-bg-card);
  border: 1px solid var(--canvas-border-default);
  border-radius: var(--canvas-radius-md);
  box-shadow: var(--canvas-shadow-lg);
  padding: var(--canvas-space-2);
  min-width: 160px;
  font-family: var(--canvas-font-family);
  display: flex;
  flex-direction: column;
  gap: 2px;
  animation: canvas-history-fade-in var(--canvas-transition-fast) var(--canvas-ease-out);
}

.canvas-edge-autowire-title {
  font-size: var(--canvas-text-xs);
  color: var(--canvas-fg-muted);
  padding: var(--canvas-space-1) var(--canvas-space-2);
  border-bottom: 1px solid var(--canvas-border-default);
  margin-bottom: var(--canvas-space-1);
}

.canvas-edge-autowire-item {
  padding: 6px var(--canvas-space-2);
  background: transparent;
  border: none;
  border-radius: var(--canvas-radius-sm);
  font-family: inherit;
  font-size: var(--canvas-text-sm);
  color: var(--canvas-fg-default);
  text-align: left;
  cursor: pointer;
  transition: background var(--canvas-transition-fast),
              color var(--canvas-transition-fast);
}

.canvas-edge-autowire-item:hover {
  background: var(--canvas-primary-soft);
  color: var(--canvas-primary-filled);
}

.canvas-edge-autowire-item:focus-visible {
  outline: none;
  background: var(--canvas-primary-soft);
  color: var(--canvas-primary-filled);
}

/* ===========================================================================
 * 15. Phase D-5 · Floating Editor 底部悬浮共享卡（替代 attached overlay）
 * ---------------------------------------------------------------------------
 * 单例 mount document.body fixed bottom: 24px / left: 50% / translate-x: -50%
 * 真抄 LibTV §24.2：editor 不 attached 节点本体，是底部共享卡服务画布上 selected 节点
 * inner 复用 InlineEditor / VideoVariantToolbar 组件，宽度跟 InlineEditor 640px 一致
 * =========================================================================== */

.canvas-floating-editor-card {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 0.5px solid var(--canvas-inline-border);
  border-radius: var(--canvas-radius-lg, 12px);
  box-shadow: var(--canvas-inline-shadow);
  min-width: 600px;
  max-width: 800px;
  animation: canvas-floating-fade-in var(--canvas-transition-fast) var(--canvas-ease-out);
}

@keyframes canvas-floating-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* floating card 内的 InlineEditor 把自身 box-shadow / border 收掉避免双重边框 */
.canvas-floating-editor-card .canvas-inline-editor {
  background: transparent;
  border: 0;
  box-shadow: none;
  margin: 0 auto;
}

.canvas-floating-editor-card .canvas-video-variant-toolbar {
  padding: var(--canvas-space-2) var(--canvas-space-3);
}

/* ============================================================================
 * Phase K-7 · TextInlineEditor · 4 chip + textarea + Run（继承 .canvas-inline-chip）
 * Round 2 review HIGH 1+3 fix: 加 chip row + active / disabled 视觉态
 * ============================================================================ */
.canvas-text-inline-editor {
  /* 默认沿用 .canvas-inline-editor 容器视觉，不改 */
}

.canvas-text-inline-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--canvas-space-2);
  padding: var(--canvas-space-2) var(--canvas-space-3) 0;
}

/* active 态：玫瑰豆沙 primary 高亮（跟全局 token 对齐） */
.canvas-text-inline-chip.is-active {
  background: var(--canvas-primary-soft, rgba(168, 96, 100, 0.12));
  color: var(--canvas-primary-active, #A86064);
  border-color: var(--canvas-primary-active, #A86064);
}

/* disabled 态：Phase L 不接 mode（图片反推 / 文字生音乐） */
.canvas-text-inline-chip.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: auto;  /* 保留 click 让 toast 出，但视觉灰 */
}

.canvas-text-inline-chip.is-disabled:hover {
  background: var(--canvas-chip-bg);  /* 不变色，提示 disabled */
  border-color: var(--canvas-chip-border);
  box-shadow: none;
}