/* Modern reveal conversation sidebar（挤压式：在文档流内推开主内容） */
.conversation-sidebar {
  --conversation-collapsed-width: 44px;
  --conversation-expanded-width: 306px;
  --conversation-icon-cell: 32px;
  --conversation-row-height: 32px;
  position: relative;
  flex-shrink: 0;
  width: var(--conversation-expanded-width);
  height: var(--app-viewport) !important;
  min-height: var(--app-viewport) !important;
  overflow: hidden;
  background: var(--surface-rail);
  border-right: 0;
  color: var(--text-primary);
  transition: width 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.conversation-sidebar::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 1px;
  pointer-events: none;
  opacity: 1;
  background: var(--border-default);
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.conversation-sidebar.collapsed {
  width: var(--conversation-collapsed-width);
}

.conversation-sidebar.collapsed::after {
  opacity: 0;
}

.conversation-sidebar-inner {
  width: var(--conversation-expanded-width);
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 12px 6px 10px 6px;
  background: inherit;
}

.conversation-primary-actions {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 0 0 auto;
}

.sidebar-nav-row,
.search-input-wrap,
.conversation-sidebar .conversation-item {
  width: 100%;
  min-height: var(--conversation-row-height);
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  display: grid;
  align-items: center;
}

.sidebar-nav-row {
  grid-template-columns: var(--conversation-icon-cell) minmax(0, 1fr);
  padding: 0;
  cursor: pointer;
  text-align: left;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.sidebar-nav-icon {
  width: var(--conversation-icon-cell);
  height: var(--conversation-row-height);
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: currentColor;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.conversation-sidebar.collapsed .sidebar-nav-row:hover,
.conversation-sidebar.collapsed .sidebar-nav-row:focus-visible {
  background: transparent;
}

.conversation-sidebar.collapsed .sidebar-nav-row:hover .sidebar-nav-icon,
.conversation-sidebar.collapsed .sidebar-nav-row:focus-visible .sidebar-nav-icon {
  background: var(--theme-tab-active);
}

.conversation-sidebar:not(.collapsed) .sidebar-nav-row:hover,
.conversation-sidebar:not(.collapsed) .sidebar-nav-row:focus-visible,
.conversation-sidebar:not(.collapsed) .sidebar-nav-row.active {
  background: var(--theme-tab-active);
  outline: none;
}

.conversation-sidebar:not(.collapsed) .workspace-control-btn.active {
  background: transparent;
}

.conversation-sidebar:not(.collapsed) .workspace-control-btn.active:hover,
.conversation-sidebar:not(.collapsed) .workspace-control-btn.active:focus-visible {
  background: var(--theme-tab-active);
}

.sidebar-nav-label,
.conversation-search,
.conversation-list,
.conversation-type-switch,
.personal-label {
  opacity: 1;
  transition: opacity 220ms ease;
  transition-delay: 80ms;
}

.conversation-sidebar.collapsed .sidebar-nav-label,
.conversation-sidebar.collapsed .conversation-search,
.conversation-sidebar.collapsed .conversation-list,
.conversation-sidebar.collapsed .conversation-type-switch,
.conversation-sidebar.collapsed .personal-label {
  opacity: 0;
  transition-delay: 0ms;
}

/* 收起时隐藏的可交互容器必须同时脱离指针事件与聚焦序列：
   它们只是透明，落在 44px 图标栏宽度内的部分仍占据布局，
   不禁止的话点击不可见区域仍会触发切换对话/聚焦输入 */
.conversation-sidebar.collapsed .conversation-search,
.conversation-sidebar.collapsed .conversation-list,
.conversation-sidebar.collapsed .conversation-type-switch {
  pointer-events: none;
  visibility: hidden;
  /* visibility 延迟到淡出结束后再切换，避免收起时内容瞬间消失；
     展开时本规则不再匹配，visibility 不在基础 transition 列表中，立即恢复 visible */
  transition:
    opacity 220ms ease,
    visibility 0s linear 220ms;
}

.sidebar-nav-label {
  min-width: 0;
  padding-left: 6px;
  padding-right: 10px;
  font-size: 13px;
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-icon svg {
  width: 23px;
  height: 23px;
}

.conversation-menu-btn .chat-icon svg {
  transform: translateY(2px);
}

.pencil-icon svg {
  width: 18px;
  height: 18px;
}

.layers-icon svg {
  width: 18px;
  height: 18px;
}

.monitor-mode-btn.blocked {
  color: var(--text-tertiary);
  opacity: 0.6;
}

.conversation-search {
  flex: 0 0 auto;
  margin-top: 8px;
}

.search-input-wrap {
  grid-template-columns: var(--conversation-icon-cell) minmax(0, 1fr);
  height: var(--conversation-row-height);
  overflow: hidden;
  transition: background 140ms ease;
}

.search-input-wrap:hover,
.search-input-wrap:focus-within {
  background: var(--theme-tab-active);
}

.search-inline-icon {
  color: var(--text-secondary);
}

.search-input {
  min-width: 0;
  width: calc(var(--conversation-expanded-width) - var(--conversation-icon-cell) - 22px);
  height: var(--conversation-row-height);
  border: 0;
  outline: 0;
  padding: 0 12px 0 8px;
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  letter-spacing: -0.01em;
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.conversation-sidebar .conversation-list {
  min-height: 0;
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding-top: 8px;
  /* 为对话类型切换推挤动画提供绝对定位上下文 */
  position: relative;
  scrollbar-width: none !important;
  -ms-overflow-style: none;
}

.conversation-sidebar .conversation-list::-webkit-scrollbar {
  width: 0 !important;
  height: 0 !important;
  display: none !important;
}

.conversation-sidebar .conversation-list-items {
  position: relative;
}

.conversation-sidebar .running-task-section {
  margin: 0 8px 12px;
  padding: 6px 0 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--border-default) 72%, transparent);
}

.conversation-sidebar .running-task-section-title {
  margin: 0 8px 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.conversation-sidebar .running-task-item {
  position: relative;
  display: grid;
  width: 100%;
  grid-template-columns: minmax(0, 1fr);
  gap: 3px;
  margin: 1px 0;
  padding: 6px 10px 6px 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.conversation-sidebar .running-task-item:hover,
.conversation-sidebar .running-task-item.active {
  background: var(--theme-tab-active);
}

.conversation-sidebar .running-task-workspace {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
}

.conversation-sidebar .running-task-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.conversation-sidebar .running-task-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18px;
  align-items: center;
  gap: 8px;
}

.conversation-sidebar .running-task-state {
  justify-self: center;
}

[data-theme='dark'] .conversation-sidebar .running-task-item:hover,
[data-theme='dark'] .conversation-sidebar .running-task-item.active,
body[data-theme='dark'] .conversation-sidebar .running-task-item:hover,
body[data-theme='dark'] .conversation-sidebar .running-task-item.active {
  background: var(--hover-bg);
}

.conversation-sidebar .conversation-item {
  position: relative;
  grid-template-columns: minmax(0, 1fr) 32px;
  margin: 1px 0;
  padding: 0;
  /* 固定行高（规范：带文字容器禁止被内容撑高）：min-height 会被 34px 的
     action-wrap 撑破，导致分组 viewport 的 N 行计算失准、最后一行被裁 */
  height: var(--conversation-row-height);
  flex: none;
  cursor: pointer;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.conversation-sidebar .conversation-delete-move {
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.conversation-sidebar .animation-mode-delete .conversation-delete-move {
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1) 100ms;
}

.conversation-sidebar .conversation-delete-enter-active {
  transition:
    transform 420ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 260ms ease;
}

.conversation-sidebar
  .animation-mode-duplicate
  .conversation-delete-enter-active.insert-from-under {
  transition-delay: 300ms;
}

.conversation-sidebar .conversation-delete-enter-active.insert-from-under {
  z-index: 0;
}

.conversation-sidebar .conversation-delete-enter-from.insert-from-left {
  transform: translateX(-112%);
  opacity: 0;
}

.conversation-sidebar .conversation-delete-enter-from.insert-from-under {
  transform: translateY(-100%);
  opacity: 0;
}

.conversation-sidebar .conversation-item.duplicate-source-mask {
  z-index: 2;
}

.conversation-sidebar .conversation-item.duplicate-source-mask::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: 12px;
  background: var(--surface-rail);
  pointer-events: none;
}

.conversation-sidebar .conversation-item.duplicate-source-mask:hover::after {
  background: var(--theme-tab-active);
}

:root[data-theme='dark']
  .conversation-sidebar
  .conversation-item.duplicate-source-mask:hover::after,
body[data-theme='dark']
  .conversation-sidebar
  .conversation-item.duplicate-source-mask:hover::after {
  background: var(--hover-bg);
}

.conversation-sidebar .conversation-item.duplicate-source-mask > * {
  position: relative;
  z-index: 2;
}

.conversation-sidebar .conversation-delete-leave-active {
  position: absolute;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1;
  pointer-events: none;
  transition:
    transform 420ms cubic-bezier(0.32, 0, 0.67, 0),
    opacity 260ms ease;
}

.conversation-sidebar .conversation-delete-leave-to {
  transform: translateX(-112%);
  opacity: 0;
}

.conversation-sidebar .conversation-item.deleting {
  transform: translateX(-112%);
  opacity: 0;
  pointer-events: none;
  transition:
    transform 420ms cubic-bezier(0.32, 0, 0.67, 0),
    opacity 260ms ease;
}

.conversation-sidebar .conversation-item:hover,
.conversation-sidebar .conversation-item:focus-within,
.conversation-sidebar .conversation-item.active:hover,
.conversation-sidebar .conversation-item.active:focus-within {
  background: var(--theme-tab-active) !important;
  box-shadow: none !important;
}

.conversation-sidebar .conversation-item.active {
  background: var(--theme-tab-active) !important;
  box-shadow: none !important;
}

:root[data-theme='dark'] .conversation-sidebar .conversation-item.active,
body[data-theme='dark'] .conversation-sidebar .conversation-item.active {
  background: var(--hover-bg) !important;
  box-shadow: none !important;
}

:root[data-theme='dark'] .conversation-sidebar .conversation-item:hover,
:root[data-theme='dark'] .conversation-sidebar .conversation-item:focus-within,
:root[data-theme='dark'] .conversation-sidebar .conversation-item.active:hover,
:root[data-theme='dark'] .conversation-sidebar .conversation-item.active:focus-within,
body[data-theme='dark'] .conversation-sidebar .conversation-item:hover,
body[data-theme='dark'] .conversation-sidebar .conversation-item:focus-within,
body[data-theme='dark'] .conversation-sidebar .conversation-item.active:hover,
body[data-theme='dark'] .conversation-sidebar .conversation-item.active:focus-within {
  background: var(--hover-bg) !important;
  box-shadow: none !important;
}

.conversation-sidebar .conversation-title {
  min-width: 0;
  padding-left: 12px;
  padding-right: 4px;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conversation-sidebar .conversation-action-wrap {
  position: relative;
  /* 宽度必须与条目第二列（32px）一致：40px 会向右溢出 8px，
     导致「…」按钮探出条目圆角背景外 */
  width: 32px;
  height: var(--conversation-row-height);
  display: grid;
  place-items: center;
  justify-self: start;
}

.conversation-sidebar .conversation-running-loader {
  width: 16px;
  height: 16px;
  border: 2px solid var(--text-secondary);
  border-bottom-color: transparent;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  animation: conversation-running-rotation 1s linear infinite;
}

.conversation-sidebar .conversation-complete-check {
  width: 18px;
  height: 18px;
  display: inline-block;
  background: var(--text-secondary);
  mask: url('/static/icons/check.svg') center / contain no-repeat;
  -webkit-mask: url('/static/icons/check.svg') center / contain no-repeat;
}

@keyframes conversation-running-rotation {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.conversation-sidebar .conversation-more-btn {
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-secondary);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  transition:
    opacity 160ms ease,
    color 140ms ease;
}

.conversation-sidebar .conversation-item:hover .conversation-more-btn,
.conversation-sidebar .conversation-action-wrap.menu-open .conversation-more-btn {
  opacity: 1;
}

.conversation-sidebar .conversation-more-btn:hover,
.conversation-sidebar .conversation-action-wrap.menu-open .conversation-more-btn {
  color: var(--text-primary);
}

.conversation-sidebar .conversation-more-btn span {
  position: relative;
  display: inline-block;
  width: 22px;
  height: 22px;
}

.conversation-sidebar .conversation-more-btn span::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 10px;
  width: 3.5px;
  height: 3.5px;
  border-radius: 999px;
  background: currentColor;
  box-shadow:
    5.5px 0 0 currentColor,
    11px 0 0 currentColor;
}

/* 菜单通过 Teleport 挂载到 body（脱离移动端面板的 transform 包含块与 overflow 裁切），
   因此样式选择器不能挂在 .conversation-sidebar 下 */
.conversation-actions-menu {
  z-index: 140;
  width: max-content;
  min-width: 92px;
  padding: 6px;
  border: 1px solid var(--border-default);
  border-radius: 14px;
  background: var(--theme-surface-strong);
  box-shadow: none;
  opacity: 0;
  transform: translateY(-4px) scale(0.98);
  pointer-events: none;
  transition:
    opacity 120ms ease,
    transform 150ms cubic-bezier(0.22, 1, 0.36, 1);
}

.conversation-actions-menu--absolute {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
}

.conversation-actions-menu--fixed {
  position: fixed;
  /* 需高于移动端面板遮罩 .mobile-panel-overlay（z-index: 2000） */
  z-index: 2300;
}

.conversation-actions-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.conversation-actions-menu button {
  width: 100%;
  min-width: 80px;
  height: 36px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text-primary);
  display: grid;
  grid-template-columns: 24px auto;
  align-items: center;
  gap: 4px;
  padding: 0 10px 0 8px;
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  transition: background 140ms ease;
}

.conversation-actions-menu button:hover {
  background: var(--theme-tab-active);
}

.conversation-actions-menu button.danger {
  color: var(--state-danger);
}

.conversation-personal-entry {
  margin-top: 8px;
  flex: 0 0 auto;
}

/* 工作区入口行：图标 + 名称（当前工作区名不再展示） */
.sidebar-nav-row.workspace-entry-btn {
  grid-template-columns: var(--conversation-icon-cell) minmax(0, 1fr);
}

.personal-page-btn svg {
  width: 18px;
  height: 18px;
}

.loading-conversations,
.no-conversations,
.search-done,
.search-progress {
  color: var(--text-secondary);
  font-size: 13px;
  padding: 10px 12px;
  white-space: nowrap;
}

.load-more {
  padding: 10px 0;
}

.load-more-btn {
  width: 100%;
  height: 34px;
  border: 0;
  border-radius: 10px;
  padding: 0 12px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: left;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.load-more-btn:hover:not(:disabled) {
  background: var(--theme-tab-active);
  color: var(--text-primary);
}

.load-more-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.search-spinner {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.search-spinner-orbit {
  position: absolute;
  inset: 0;
}

.search-spinner-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: search-wobble 0.9s ease-in-out infinite;
}

@keyframes search-wobble {
  from {
    transform: translate(-50%, -50%) translateX(-1px);
  }
  50% {
    transform: translate(-50%, -50%) translateX(1px);
  }
  to {
    transform: translate(-50%, -50%) translateX(-1px);
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Workspace groups */
.workspace-groups {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 2px;
}

.workspace-group {
  display: flex;
  flex-direction: column;
}

.workspace-group-header {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  height: var(--conversation-row-height);
  border-radius: 8px;
  transition: background 140ms ease;
}

.workspace-group-header:hover {
  background: var(--theme-tab-active);
}

:root[data-theme='dark'] .workspace-group-header:hover,
body[data-theme='dark'] .workspace-group-header:hover {
  background: var(--hover-bg);
}

.workspace-group-toggle {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  align-items: center;
  gap: 5px;
  height: 100%;
  padding: 0 8px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
}

.workspace-folder-icon {
  color: var(--text-secondary);
}

/* 搜索结果分组头：仅作分类标识，不可交互、无 hover 高亮 */
.workspace-group-header.search-result-group-header:hover,
:root[data-theme='dark'] .workspace-group-header.search-result-group-header:hover,
body[data-theme='dark'] .workspace-group-header.search-result-group-header:hover {
  background: transparent;
}

.workspace-group-toggle.search-result-group-toggle {
  cursor: default;
}

.workspace-group-label {
  min-width: 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.workspace-current-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
}

.workspace-running-loader {
  width: 14px;
  height: 14px;
  border: 2px solid var(--text-secondary);
  border-bottom-color: transparent;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  animation: conversation-running-rotation 1s linear infinite;
}

.workspace-group-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  padding-right: 6px;
  opacity: 0;
  transition: opacity 160ms ease;
}

.workspace-group-actions.visible {
  opacity: 1;
}

.workspace-new-btn,
.workspace-more-btn {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.workspace-new-btn:hover,
.workspace-more-btn:hover,
.workspace-group-actions.visible .workspace-more-btn[aria-expanded='true'] {
  background: var(--theme-surface-strong);
  color: var(--text-primary);
}

.workspace-more-btn span {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 18px;
}

.workspace-more-btn span::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 8px;
  width: 3px;
  height: 3px;
  border-radius: 999px;
  background: currentColor;
  box-shadow:
    4.5px 0 0 currentColor,
    9px 0 0 currentColor;
}

.workspace-actions-menu {
  position: absolute;
  right: 6px;
  top: calc(100% + 4px);
  z-index: 140;
  width: max-content;
  min-width: 120px;
  padding: 6px;
  border: 1px solid var(--border-default);
  border-radius: 14px;
  background: var(--theme-surface-strong);
  box-shadow: none;
  opacity: 0;
  transform: translateY(-4px) scale(0.98);
  pointer-events: none;
  transition:
    opacity 120ms ease,
    transform 150ms cubic-bezier(0.22, 1, 0.36, 1);
}

.workspace-actions-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.workspace-actions-menu button {
  width: 100%;
  min-width: 80px;
  height: 34px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text-primary);
  display: grid;
  align-items: center;
  padding: 0 10px;
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  transition: background 140ms ease;
}

.workspace-actions-menu button:hover {
  background: var(--theme-tab-active);
}

/* 触摸设备（手机/平板）没有 hover：常显操作入口。
   否则按钮透明时首次 tap 只会应用 hover 态（按钮显现）并吞掉 click，菜单打不开 */
@media (hover: none) {
  .conversation-sidebar .conversation-more-btn,
  .conversation-sidebar .workspace-group-actions {
    opacity: 1;
  }
}

.workspace-group-children {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* 切换工作区引发的重排/展开折叠：全部瞬间完成，不做滑动。
   注意只禁用位移类过渡（move + grid-rows），保留新建/复制等 enter 动画。 */
.workspace-groups.switch-instant .workspace-group-children {
  transition: none !important;
}

.workspace-groups.switch-instant .conversation-delete-move {
  transition: none !important;
}

.workspace-group-children.expanded {
  grid-template-rows: 1fr;
}

.workspace-group-children-inner {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.workspace-conversations-viewport {
  position: relative;
  max-height: calc((var(--conversation-row-height) + 2px) * var(--workspace-visible-count, 5));
  overflow: hidden;
}

.workspace-conversations-list {
  position: relative;
  display: flex;
  flex-direction: column;
}

/* 注意：不要在这里用 .workspace-conversation-item 覆盖 grid-template-columns，
   特异性低于 .conversation-sidebar .conversation-item，写了也不会生效。 */

.workspace-no-conversations,
.workspace-conversations-loading {
  color: var(--text-secondary);
  font-size: 13px;
  padding: 10px 12px;
}

.workspace-load-more {
  padding: 4px 0 8px;
}

/* Workspace rename dialog */
.workspace-rename-overlay {
  position: absolute;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: var(--overlay-scrim);
}

.workspace-rename-card {
  width: min(calc(100% - 32px), 320px);
  padding: 16px;
  border-radius: 16px;
  background: var(--theme-surface-strong);
  border: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.workspace-rename-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.workspace-rename-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border-default);
  border-radius: 10px;
  background: var(--surface-base);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
}

.workspace-rename-input:focus {
  border-color: var(--accent-primary);
}

.workspace-rename-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.workspace-rename-actions button {
  height: 34px;
  padding: 0 14px;
  border: 0;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: background 140ms ease;
}

.workspace-rename-cancel {
  background: transparent;
  color: var(--text-primary);
}

.workspace-rename-cancel:hover {
  background: var(--theme-tab-active);
}

.workspace-rename-confirm {
  background: var(--accent-primary);
  color: var(--accent-on-primary);
}

.workspace-rename-confirm:hover {
  background: var(--accent-primary-hover);
}

/* Final sidebar-specific guards against broad legacy rules. */
.conversation-sidebar .search-input {
  background: transparent !important;
  box-shadow: none !important;
  border: 0 !important;
}

.conversation-sidebar .search-input:focus {
  background: transparent !important;
  box-shadow: none !important;
}

.conversation-sidebar .conversation-list {
  scrollbar-width: none !important;
  -ms-overflow-style: none;
}

.conversation-sidebar .conversation-list::-webkit-scrollbar {
  width: 0 !important;
  height: 0 !important;
  display: none !important;
}

.conversation-sidebar .personal-page-btn,
.conversation-sidebar .conversation-personal-entry:not(.collapsed) .personal-page-btn {
  background: transparent !important;
  box-shadow: none !important;
}

.conversation-sidebar.collapsed .personal-page-btn:hover,
.conversation-sidebar.collapsed .personal-page-btn:focus-visible {
  background: transparent !important;
}

.conversation-sidebar.collapsed .personal-page-btn:hover .sidebar-nav-icon,
.conversation-sidebar.collapsed .personal-page-btn:focus-visible .sidebar-nav-icon {
  background: var(--theme-tab-active) !important;
}

.conversation-sidebar:not(.collapsed) .personal-page-btn:hover,
.conversation-sidebar:not(.collapsed) .personal-page-btn:focus-visible {
  background: var(--theme-tab-active) !important;
}

:root[data-theme='dark'] .conversation-sidebar:not(.collapsed) .personal-page-btn:hover,
:root[data-theme='dark'] .conversation-sidebar:not(.collapsed) .personal-page-btn:focus-visible,
body[data-theme='dark'] .conversation-sidebar:not(.collapsed) .personal-page-btn:hover,
body[data-theme='dark'] .conversation-sidebar:not(.collapsed) .personal-page-btn:focus-visible {
  background: var(--hover-bg) !important;
}

.conversation-sidebar .load-more-btn {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  text-align: left !important;
}

.conversation-sidebar .load-more-btn:hover:not(:disabled) {
  background: var(--theme-tab-active) !important;
}

:root[data-theme='dark'] .conversation-sidebar .load-more-btn:hover:not(:disabled),
body[data-theme='dark'] .conversation-sidebar .load-more-btn:hover:not(:disabled) {
  background: var(--hover-bg) !important;
}

/* ========== 侧边栏对话类型切换（普通 / 多智能体） ========== */
.conversation-type-switch {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 6px 8px 0;
  padding: 2px;
  height: 30px;
  border-radius: 8px;
  background: var(--surface-muted);
}

.conversation-type-option {
  flex: 1 1 0;
  height: 26px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition:
    background 140ms ease,
    color 140ms ease;
}

.conversation-type-option:hover:not(.active) {
  color: var(--text-primary);
}

.conversation-type-option.active {
  background: var(--surface-soft);
  color: var(--text-primary);
  font-weight: 600;
}

/* 列表区域整体左右滑动切换动画（推挤式：新面板从侧边滑入把旧面板顶出去，
   无 out-in 空白期；两面板同速同幅滑动，边缘始终相接） */
.conversation-list-pane {
  min-height: 0;
}

.type-slide-left-enter-active,
.type-slide-left-leave-active,
.type-slide-right-enter-active,
.type-slide-right-leave-active {
  transition: transform 220ms ease;
}

/* 进入面板绝对定位覆盖在容器上，与流内滑出的旧面板同步推移；
   padding-top 对齐 .conversation-list 的 padding-top，避免垂直错位 */
.type-slide-left-enter-active,
.type-slide-right-enter-active {
  position: absolute;
  inset: 0;
  padding-top: 8px;
  overflow: hidden;
}

.type-slide-left-enter-from {
  transform: translateX(100%);
}

.type-slide-left-leave-to {
  transform: translateX(-100%);
}

.type-slide-right-enter-from {
  transform: translateX(-100%);
}

.type-slide-right-leave-to {
  transform: translateX(100%);
}