/* ============================================================
   PDF 需求改造补丁
   1. 节点选择菜单：左 icon + 右文字 紧凑样式
   2. 生成节点结果图区（不新建节点，直接显示在本节点）
   3. 结果图悬浮操作（放大 / 下载）
   4. @ 引用上游图片面板
   注意：全部只动视觉，不动 .react-flow__node 的定位 transform
   ============================================================ */

/* ---------- 1. 节点选择菜单：紧凑样式 ---------- */
.context-menu {
  width: 172px;
  padding: 6px;
  gap: 2px;
}

.context-menu .context-title {
  padding: 5px 10px 7px;
  font-size: 11px;
  letter-spacing: 0.02em;
}

/* 按钮：左 icon 右文字，横向排列紧凑 */
.context-menu button {
  height: 36px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 9px;
  padding: 0 11px;
  border-radius: var(--ai2-r-field);
  font-size: 12.5px;
  font-weight: 500;
  color: #33383d;
  text-align: left;
  transition: background 0.13s ease, color 0.13s ease, transform 0.1s ease;
}

.context-menu button svg {
  flex: 0 0 auto;
  color: #9aa2a9;
  transition: color 0.13s ease;
}

.context-menu button:hover {
  background: #f7f8fa;
  color: #171a1d;
  transform: translateX(2px);
}

.context-menu button:hover svg {
  color: #526df5;
}

.context-menu button:active {
  transform: translateX(2px) scale(0.98);
}

.context-menu button.ghost {
  justify-content: center;
  color: #9aa2a9;
  font-weight: 400;
  margin-top: 2px;
}

.context-menu button.ghost:hover {
  background: #f7f8fa;
  color: #667078;
  transform: none;
}

/* ---------- 2. 生成节点结果图区 ---------- */
.node-result-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed #e3e7ea;
}

/* 单张结果缩略图：悬浮显示操作 */
.result-thumb {
  position: relative;
  flex: 0 0 auto;
  width: calc(50% - 4px);
  max-width: calc(50% - 4px);
  aspect-ratio: 1 / 1;
  border-radius: var(--ai2-r-field);
  overflow: hidden;
  background: #f7f8fa;
  border: 1px solid #e3e7ea;
  cursor: zoom-in;
}

/* 只有 1 张结果时占满宽度 */
.result-thumb:only-child {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 4 / 3;
}

.result-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  -webkit-user-select: none;
  user-select: none;
  transition: transform 0.25s ease;
}

.result-thumb:hover img {
  transform: scale(1.04);
}

/* ---------- 3. 结果图悬浮操作：只有 放大 / 下载 两个小图标 ---------- */
.result-thumb-actions {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  gap: 5px;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease;
  pointer-events: none;
  z-index: 5;
}

.result-thumb:hover .result-thumb-actions,
.result-thumb:focus-within .result-thumb-actions {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.result-icon-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(23, 26, 29, .6);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .22);
  cursor: pointer;
  transition: background 0.14s ease, transform 0.12s ease;
  padding: 0;
}

.result-icon-btn svg {
  width: 14px;
  height: 14px;
}

.result-icon-btn:hover {
  background: rgba(63, 85, 196, .92);
  transform: scale(1.1);
}

.result-icon-btn:active {
  transform: scale(0.96);
}

/* 触屏设备（无 hover）常驻显示，避免点不到 */
@media (hover: none) {
  .result-thumb-actions {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
}

/* ---------- 4. @ 引用上游图片面板 ---------- */
.mention-panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 6px);
  z-index: 90;
  max-height: 220px;
  overflow-y: auto;
  padding: 8px;
  border-radius: var(--ai2-r-panel);
  background: #fffffffa;
  border: 1px solid #e3e7ea;
  box-shadow: 0 -14px 44px rgba(82, 109, 245, .18);
  display: flex;
  flex-direction: column;
  gap: 4px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  scrollbar-width: thin;
}

.mention-panel::-webkit-scrollbar {
  width: 5px;
}

.mention-panel::-webkit-scrollbar-thumb {
  background: #8e9bf952;
  border-radius: 999px;
}

.mention-title {
  /* 横排容器里独占一行，其余项排在它下面 */
  flex: 0 0 100%;
  font-size: 11px;
  color: #9aa2a9;
  padding: 3px 8px 5px;
  letter-spacing: 0.02em;
}

/* 每个可引用项：左缩略图 + 右名称，横向排在弹层里 */
.mention-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  max-width: 168px;
  padding: 5px 8px;
  border-radius: var(--ai2-r-field);
  cursor: pointer;
  transition: background 0.13s ease;
}

.mention-item:hover {
  background: #f7f8fa;
}

.mention-item img {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: var(--ai2-r-tag);
  object-fit: cover;
  border: 1px solid #e3e7ea;
  -webkit-user-select: none;
  user-select: none;
}

.mention-item span {
  font-size: 12px;
  color: #33383d;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.mention-empty {
  flex: 0 0 100%;
  padding: 12px 10px;
  font-size: 11.5px;
  color: #9aa2a9;
  text-align: center;
  line-height: 1.5;
}

/* 输入 @ 时提示词框高亮提示（可选微反馈） */
.node-textarea.prompt {
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

/* ---------- 系统"减少动效"时关闭过渡 ---------- */
@media (prefers-reduced-motion: reduce) {
  .context-menu button,
  .result-thumb img,
  .result-thumb-actions,
  .result-icon-btn {
    transition: none !important;
  }
  .context-menu button:hover,
  .result-thumb:hover img {
    transform: none !important;
  }
}