.canvas-media-preview-nav:hover,
.canvas-media-preview-nav:focus-visible {
  outline: none;
  opacity: 1;
  border-color: rgba(255,255,255,0.24);
  background: rgba(39,40,45,0.76);
}

/* 预览打开时 openMediaPreview 会把焦点程序化地放到关闭按钮上，
   共享的 studio/tapnow 焦点层会给按钮画出方形描边环；这些预览
   控件与上方导航按钮一样显式去掉焦点环。 */
.canvas-media-preview-tools button:focus-visible,
.canvas-media-preview-close:focus-visible {
  outline: none;
  box-shadow: none !important;
}

.canvas-media-preview-nav.is-prev {
  left: 22px;
}

.canvas-media-preview-nav.is-next {
  right: 22px;
}

.canvas-media-preview-counter {
  position: absolute;
  left: 50%;
  bottom: 20px;
  z-index: 3;
  min-width: 68px;
  height: 30px;
  display: grid;
  place-items: center;
  padding: 0 12px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 999px;
  background: rgba(20,21,25,0.62);
  color: rgba(255,255,255,0.82);
  font-size: 13px;
  font-weight: 600;
  transform: translateX(-50%);
  pointer-events: none;
}

@keyframes canvasPreviewSlideForward {
  from {
    opacity: 0;
    translate: 34px 0;
  }
  to {
    opacity: 1;
    translate: 0 0;
  }
}

@keyframes canvasPreviewSlideBack {
  from {
    opacity: 0;
    translate: -34px 0;
  }
  to {
    opacity: 1;
    translate: 0 0;
  }
}

.canvas-toolbar-btn {
  flex: 0 0 auto;
  width: 40px;
  height: 38px;
}

.canvas-toolbar-btn.disabled {
  opacity: 0.36;
  pointer-events: none;
}

.canvas-toolbar-divider {
  flex: 0 0 auto;
  width: 1px;
  height: 28px;
  margin: 0 4px;
  background: rgba(255,255,255,0.1);
}

.canvas-sidebar-tools .canvas-toolbar-btn {
  width: 40px;
  height: 40px;
}

.canvas-sidebar-tools .canvas-toolbar-divider {
  width: 28px;
  height: 1px;
  margin: 3px 0;
}

.canvas-node-panel {
  position: absolute;
  z-index: 1;
  max-width: calc(100% - 32px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  background: rgba(31, 33, 39, 0.96);
  box-shadow: 0 22px 70px rgba(0,0,0,0.42);
  backdrop-filter: blur(18px);
  padding: 12px;
  transition:
    transform 0.14s ease,
    border-color 0.18s ease,
    background 0.22s ease,
    box-shadow 0.18s ease;
}

.canvas-node-panel:hover,
.canvas-node-panel:focus-within {
  border-color: rgba(125,211,252,0.26);
  background:
    linear-gradient(145deg, rgba(35, 39, 48, 0.97), rgba(29, 31, 38, 0.96)),
    radial-gradient(circle at 12% 0%, rgba(56,189,248,0.1), transparent 36%),
    radial-gradient(circle at 88% 100%, rgba(250,204,21,0.06), transparent 34%);
  box-shadow:
    0 24px 74px rgba(0,0,0,0.44),
    0 0 0 1px rgba(125,211,252,0.055),
    inset 0 1px 0 rgba(255,255,255,0.08);
}

.canvas-node-panel.is-closing {
  pointer-events: none;
  animation: canvasPanelOut 0.18s ease both;
}

@keyframes canvasPanelOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

.canvas-node-menu {
  position: absolute;
  z-index: 60;
  width: 196px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  background: rgba(19, 21, 28, 0.96);
  box-shadow: 0 18px 46px rgba(0,0,0,0.4);
  backdrop-filter: blur(18px);
  padding: 10px;
}

.canvas-node-menu-title {
  margin-bottom: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  font-weight: 800;
}

/* ---- 左侧节点栏（单一"节点"图标，点击向右展开添加节点列表） ----
   面板复用 .canvas-node-menu 的视觉体系（材质 / 图标块 / 文字 / 动效，见
   theme.css、tapnow-theme-*.css），这里只补充左侧栏定位与兜底入场动画。 */
.canvas-node-rail-anchor {
  position: relative;
  flex: 0 0 auto;
  display: flex;
}

/* 触发器的 .active 高亮由主题样式（.canvas-toolbar-btn.active）提供。 */
.canvas-node-rail-anchor.is-open .canvas-node-rail-trigger[data-tooltip]:hover::after {
  display: none;
}

.canvas-node-rail {
  left: calc(100% + 10px);
  top: 0;
  z-index: 61;
  animation: canvasNodeRailIn 0.14s ease;
}

@keyframes canvasNodeRailIn {
  from {
    opacity: 0;
    transform: translateX(-8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

.canvas-node-menu button {
  width: 100%;
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  padding: 0 10px;
  border: 0;
  border-radius: 6px;
  background: rgba(255,255,255,0.05);
  color: #fff;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.canvas-node-menu button:hover {
  background: rgba(255,255,255,0.1);
}

.canvas-node-menu button span {
  width: 20px;
  display: inline-flex;
  justify-content: center;
  color: rgba(56,189,248,0.9);
  font-weight: 900;
}

.canvas-node-menu button b {
  font-weight: 800;
}

/* ---- 空画布中心创作引导（＋ 生图 / 生视频） ----
   单击空白画布（且画布还没有任何节点）时由 CanvasRenderer.renderGuideLayer 渲染
   到独立的 #canvasGuideLayer（#canvasStageWrap 的直接子元素，独立于画布浮层，
   也不受 viewport transform 影响），所以这里用 50% 居中就是视口正中，画布平移
   或缩放时卡片始终钉在中间；引导打开期间滚轮缩放被禁用（见 pointers.js 的
   handleWheel），避免「卡片不动、画布在动」的割裂感。
   视觉完全沿用节点体系：卡片就是节点卡片的材质（surface / border / radius /
   阴影），＋ 标记沿用节点输出端口的画法（.canvas-connect-plus：圆形底座 +
   两条光条 + 外圈柔光环），两个创作入口是迷你节点卡（图标块 + 标题 + 说明），
   hover 与节点 hover 的边框提亮一致。生图 / 生视频 用蓝色文字。画布一旦有节点，
   引导就不再渲染。 */
.canvas-create-guide {
  --canvas-guide-blue: #38bdf8;
  --canvas-guide-blue-soft: rgba(56, 189, 248, 0.12);
  position: absolute;
  z-index: 62;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 372px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--canvas-border, rgba(255, 255, 255, 0.12));
  border-radius: var(--canvas-radius, 8px);
  background: var(--canvas-surface-float, rgba(19, 21, 28, 0.96));
  box-shadow: 0 24px 58px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(18px);
  animation: canvasCreateGuideIn 0.16s ease;
}

.canvas-create-guide-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px 4px 0;
}

/* ＋ 标记 = 节点输出端口的画法，让引导看起来属于画布本身。 */
.canvas-create-guide-plus {
  position: relative;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(125, 211, 252, 0.82);
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 28%, rgba(186, 230, 253, 0.28), transparent 34%),
    linear-gradient(145deg, rgba(15, 40, 56, 0.98), rgba(6, 16, 25, 0.94));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 8px 18px rgba(0, 0, 0, 0.34),
    0 0 0 7px rgba(56, 189, 248, 0.12);
  transition: border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease;
}

.canvas-create-guide-plus::before,
.canvas-create-guide-plus::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 15px;
  height: 3px;
  border-radius: 999px;
  background: var(--canvas-guide-blue);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.62);
  transform: translate(-50%, -50%);
}

.canvas-create-guide-plus::after {
  width: 3px;
  height: 15px;
}

.canvas-create-guide-heading {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.canvas-create-guide-heading strong {
  color: var(--canvas-text, #fff);
  font-size: 14px;
  font-weight: 800;
}

.canvas-create-guide-heading span {
  color: var(--canvas-text-muted, rgba(255, 255, 255, 0.5));
  font-size: 11px;
}

.canvas-create-guide-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.canvas-create-guide-action {
  min-height: 82px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 10px 12px;
  border: 1px solid var(--canvas-border, rgba(255, 255, 255, 0.1));
  border-radius: calc(var(--canvas-radius, 8px) - 2px);
  background: var(--canvas-surface-soft, rgba(255, 255, 255, 0.05));
  color: var(--canvas-text, #fff);
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: border-color 0.16s ease, background 0.16s ease, transform 0.16s ease;
}

.canvas-create-guide-action:hover {
  border-color: var(--canvas-border-strong, rgba(255, 255, 255, 0.45));
  background: var(--canvas-surface-hover, rgba(255, 255, 255, 0.08));
  transform: translateY(-1px);
}

.canvas-create-guide-action:active {
  transform: translateY(0) scale(0.99);
}

.canvas-create-guide-action:focus-visible {
  outline: none;
  box-shadow: var(--canvas-focus-ring, 0 0 0 2px rgba(255, 255, 255, 0.45));
}

.canvas-create-guide-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(56, 189, 248, 0.32);
  border-radius: calc(var(--canvas-radius, 8px) - 4px);
  background: var(--canvas-guide-blue-soft);
  color: var(--canvas-guide-blue);
  font-size: 13px;
  font-weight: 900;
}

.canvas-create-guide-action b {
  color: var(--canvas-guide-blue);
  font-size: 14px;
  font-weight: 800;
}

.canvas-create-guide-action small {
  color: var(--canvas-text-muted, rgba(255, 255, 255, 0.45));
  font-size: 11px;
  line-height: 1.35;
}

.canvas-create-guide-hint {
  padding: 0 4px;
  color: var(--canvas-text-muted, rgba(255, 255, 255, 0.38));
  font-size: 11px;
  text-align: center;
}

@keyframes canvasCreateGuideIn {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .canvas-create-guide {
    animation: none;
  }
}

/* Narrow screens: the centred card stays inside the stage and the two entries
   stack instead of squeezing their labels. */
@media (max-width: 460px) {
  .canvas-create-guide {
    width: calc(100% - 24px);
  }

  .canvas-create-guide-actions {
    grid-template-columns: 1fr;
  }

  .canvas-create-guide-action {
    min-height: 64px;
  }
}

.canvas-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.canvas-panel-head input,
.canvas-panel-title-input {
  min-width: 0;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,0.16);
  background: transparent;
  color: #fff;
  outline: none;
  font: inherit;
  font-weight: 800;
  padding: 6px 0;
}

.canvas-panel-head button,
.canvas-panel-bottom button,
.canvas-context-actions button {
  min-height: 34px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  padding: 0 10px;
}

.canvas-panel-title-input {
  width: 100%;
  margin-bottom: 8px;
}

/* 生图/视频生成面板的标题是静态标签（不再是 input）：不可聚焦、不可编辑、
   去掉可编辑样式的下划线，tapnow 主题的 input 胶囊样式也不再命中。 */
.canvas-panel-title-input.is-static {
  display: block;
  border-bottom: 0;
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

.canvas-panel-prompt {
  width: 100%;
  min-height: 92px;
  max-height: 220px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  background: rgba(0,0,0,0.18);
  color: rgba(255,255,255,0.88);
  outline: none;
  resize: none;
  overflow-x: hidden;
  overflow-y: auto;
  font: inherit;
  line-height: 1.55;
  padding: 10px 8px 10px 12px;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.canvas-panel-prompt:focus {
  border-color: rgba(56,189,248,0.42);
  background: rgba(4,12,20,0.3);
  box-shadow: inset 0 0 0 1px rgba(56,189,248,0.12);
}

.canvas-panel-prompt.is-locked,
.canvas-node-panel .media-mention-editor.is-disabled {
  cursor: not-allowed;
  border-color: rgba(56,189,248,0.18);
  background: rgba(56,189,248,0.06);
  color: rgba(255,255,255,0.62);
}

/* ---- 文本节点模型菜单（composer 卡的子级，父子跟随缩放） ----
   菜单与背板渲染在 .canvas-text-ai-card 内部：卡片在缩放后的 stage 里，
   它的可读性缩放 --text-ai-card-scale 对菜单同样生效，画布缩放/平移、
   卡片随内容增高时，菜单都跟着卡片的位置和缩放一起走，无需屏幕锚点。
   背板是覆盖整个可见视口的大尺寸板（stage 带 transform，其内部的
   fixed 会退化为相对 stage 定位），任意位置点击画布即关闭菜单。 */
.canvas-text-ai-menu-backdrop {
  position: absolute;
  left: -100000px;
  top: -100000px;
  width: 300000px;
  height: 300000px;
  z-index: 10;
  pointer-events: auto;
}

.canvas-text-ai-menu {
  position: absolute;
  left: 12px;
  top: calc(100% + 8px);
  z-index: 11;
  min-width: 230px;
  max-width: 320px;
  display: grid;
  gap: 4px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  background: rgba(19, 21, 28, 0.94);
  box-shadow: 0 18px 44px rgba(0,0,0,0.4);
  backdrop-filter: blur(16px);
  pointer-events: auto;
}

.canvas-text-ai-menu-title {
  padding: 2px 6px 4px;
  color: rgba(255,255,255,0.45);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.canvas-text-ai-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.14s ease;
}

.canvas-text-ai-menu-item:hover {
  background: rgba(255,255,255,0.08);
}

.canvas-text-ai-menu-item.is-active {
  background: rgba(56,189,248,0.14);
}

.canvas-text-ai-menu-item-provider {
  padding: 1px 6px;
  border-radius: 5px;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.55);
  font-size: 10px;
  font-weight: 700;
}

/* 模型徽标（Provider 声明的 logo svg，与创作页 .model-option-logo 同款花瓣
   图标；llm-relay 用它替代 provider 角标）：stroke=currentColor 跟随菜单项文字色。 */
.canvas-text-ai-menu-item-logo {
  width: 16px;
  height: 16px;
  display: inline-flex;
  flex: 0 0 auto;
}

.canvas-text-ai-menu-item-logo svg {
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-text-ai-menu-item-label {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.canvas-text-ai-menu-item-check {
  color: #7dd3fc;
  font-weight: 900;
}

.canvas-text-ai-menu-empty {
  padding: 8px 10px 10px;
  color: rgba(255,255,255,0.78);
  font-size: 13px;
  line-height: 1.6;
}

.canvas-text-ai-menu-empty span {
  color: rgba(255,255,255,0.42);
  font-size: 11px;
}