diff --git a/package-lock.json b/package-lock.json
index d2e330f..5470a46 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
         "electron": "^42.3.0",
         "electron-vite": "^5.0.0",
         "gray-matter": "^4.0.3",
+        "lucide-vue-next": "^1.0.0",
         "nanoid": "^5.1.11",
         "pinia": "^3.0.4",
         "primeicons": "^7.0.0",
@@ -5478,6 +5479,16 @@
         "yallist": "^3.0.2"
       }
     },
+    "node_modules/lucide-vue-next": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/lucide-vue-next/-/lucide-vue-next-1.0.0.tgz",
+      "integrity": "sha512-V6SPvx1IHTj/UY+FrIYWV5faISsPSb8BnWSFDxAtezWKvWc9ZZ40PDrdu1/Qb5vg4lHWr1hs1BAMGVGm6V1Xdg==",
+      "deprecated": "Package deprecated. Please use @lucide/vue instead.",
+      "license": "ISC",
+      "peerDependencies": {
+        "vue": ">=3.0.1"
+      }
+    },
     "node_modules/magic-string": {
       "version": "0.30.21",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.21.tgz",
diff --git a/package.json b/package.json
index aa59034..1441f03 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,7 @@
     "electron": "^42.3.0",
     "electron-vite": "^5.0.0",
     "gray-matter": "^4.0.3",
+    "lucide-vue-next": "^1.0.0",
     "nanoid": "^5.1.11",
     "pinia": "^3.0.4",
     "primeicons": "^7.0.0",
diff --git a/src/renderer/src/components/LucideIcon.vue b/src/renderer/src/components/LucideIcon.vue
new file mode 100644
index 0000000..1097940
--- /dev/null
+++ b/src/renderer/src/components/LucideIcon.vue
@@ -0,0 +1,42 @@
+<script setup>
+import { computed } from 'vue';
+import * as LucideIcons from 'lucide-vue-next';
+
+const props = defineProps({
+  name: {
+    type: String,
+    required: true,
+  },
+  size: {
+    type: [Number, String],
+    default: 24,
+  },
+  color: {
+    type: String,
+    default: 'currentColor',
+  },
+  strokeWidth: {
+    type: [Number, String],
+    default: 2,
+  },
+});
+
+const icon = computed(() => {
+  // Lucide 图标通常是 PascalCase，用户输入可能是 kebab-case
+  const pascalName = props.name
+    .split('-')
+    .map((word) => word.charAt(0).toUpperCase() + word.slice(1))
+    .join('');
+
+  return LucideIcons[pascalName] || LucideIcons[props.name] || null;
+});
+</script>
+
+<template>
+  <component :is="icon" v-if="icon" :size="size" :color="color" :stroke-width="strokeWidth" class="lucide-icon" />
+  <span
+    v-else
+    class="lucide-icon-fallback"
+    :style="{ width: size + 'px', height: size + 'px', display: 'inline-block' }"
+  ></span>
+</template>
diff --git a/src/renderer/src/components/SideBar.vue b/src/renderer/src/components/SideBar.vue
index 907b2ad..e0af2f2 100644
--- a/src/renderer/src/components/SideBar.vue
+++ b/src/renderer/src/components/SideBar.vue
@@ -3,22 +3,15 @@ import {ref, computed, onMounted, nextTick} from 'vue'
 import Button from 'primevue/button'
 import InputText from 'primevue/inputtext'
 import Dialog from 'primevue/dialog'
-import Menu from 'primevue/menu'
 import IconField from 'primevue/iconfield'
 import InputIcon from 'primevue/inputicon'
-import ScrollPanel from 'primevue/scrollpanel'
-import Tree from 'primevue/tree'
-import {
-  Search, Plus, File, Star, Trash2,
-  Settings, Sun, Moon, Monitor,
-  BookOpen, Tag, ChevronDown, ChevronRight, Hash,
-  MoreHorizontal
-} from '@lucide/vue'
+import {Plus, File, Sun, Moon, Monitor, Settings} from '@lucide/vue'
 import {useThemeStore} from '../stores/theme'
 import {useNotesStore} from '../stores/notes'
 import {useNotebooksStore} from '../stores/notebooks'
-import {useSidebarTree} from '../composables/useSidebarTree'
-import ButtonIcon from "./ButtonIcon.vue";
+
+import Menu from 'primevue/menu'
+import LucideIcon from "./LucideIcon.vue";
 
 const themeStore = useThemeStore()
 const notesStore = useNotesStore()
@@ -29,7 +22,22 @@ const props = defineProps({
   tags: {type: Array, default: () => []}
 })
 
-const {sidebarTree, flatNotebooks, expandedKeys, toggleNodeExpanded, loadNotebooks, loadNotes} = useSidebarTree(computed(() => props.tags))
+async function loadNotebooks() {
+  await notebooksStore.loadNotebooks()
+}
+
+async function loadNotes() {
+  await notesStore.loadNotes()
+}
+
+
+const items11 = ref([
+
+  {label: 'Documents', icon: 'search' },
+  {label: '收藏夹', icon: 'search'},
+  {label: '标签', icon: 'search'},
+  {label: '笔记本', icon: 'search'},
+]);
 
 const theme = computed(() => themeStore.theme)
 const toggleTheme = themeStore.toggleTheme
@@ -42,22 +50,11 @@ const newNotebookParentName = computed(() => {
 
 const emit = defineEmits(['navigate', 'create-note', 'select-notebook', 'select-tag', 'select-note'])
 
-// Selected tree node
-const selectedTreeKey = ref(null)
-
-// Load notebooks and notes on mount
 onMounted(async () => {
   await loadNotebooks()
   await loadNotes()
 })
 
-// Collapse state
-const collapsed = ref(false)
-
-function toggleCollapsed() {
-  collapsed.value = !collapsed.value
-}
-
 // Navigation state
 const activeNav = ref('all')
 
@@ -78,7 +75,6 @@ async function onSearchInput() {
   }, 200)
 }
 
-// Methods
 function handleNav(id) {
   activeNav.value = id
   emit('navigate', id)
@@ -89,72 +85,122 @@ function selectNotebook(notebook) {
   emit('select-notebook', notebook)
 }
 
-/**
- * Handle Tree node selection
- * PrimeVue v4 passes node directly (not wrapped in event object)
- */
-function onTreeSelect(node) {
-  const { type, id } = node.data
-
-  if (type === 'nav') {
-    selectedTreeKey.value = node.key
-    handleNav(id)
-  } else if (type === 'notebook') {
-    selectedTreeKey.value = node.key
-    activeNav.value = `notebook-${id}`
-    emit('select-notebook', node.data)
-  } else if (type === 'note') {
-    selectedTreeKey.value = node.key
-    activeNav.value = `note-${id}`
-    emit('select-note', node.data)
-  } else if (type === 'tag') {
-    selectedTreeKey.value = node.key
-    activeNav.value = `tag-${id}`
-    emit('select-tag', node.data)
-  }
-}
-
 function selectTag(tag) {
   activeNav.value = `tag-${tag.id}`
   emit('select-tag', tag)
 }
 
+function selectSearchNote(note) {
+  emit('select-note', note)
+  searchQuery.value = ''
+  searchResults.value = []
+}
+
+function getNotebookName(note) {
+  if (note.notebook_name) return note.notebook_name
+  const nb = props.notebooks.find(n => n.id === note.notebook_id)
+  return nb ? nb.name : ''
+}
+
 function createNote(notebookId) {
-  closeMenu()
   emit('create-note', notebookId)
 }
 
-// Notebook actions menu (PrimeVue Menu)
-const notebookMenuRef = ref(null)
-const activeMenuNotebookId = ref(null)
+// Notebook tree for PanelMenu
+const notebookTreeItems = computed(() => {
+  const notebookList = notebooksStore.notebooks
+  const noteList = notesStore.notes
 
-const notebookMenuItems = computed(() => [
+  function buildNotebookChildren(parentId) {
+    const children = []
+
+    const childNotebooks = notebookList.filter(nb => (nb.parent_id || null) === parentId)
+    childNotebooks.sort((a, b) => a.name.localeCompare(b.name))
+    childNotebooks.forEach(nb => {
+      const nbChildren = buildNotebookChildren(nb.id)
+      children.push({
+        key: `notebook-${nb.id}`,
+        label: nb.name,
+        icon: 'pi pi-folder',
+        command: () => selectNotebook(nb),
+        items: nbChildren.length > 0 ? nbChildren : undefined
+      })
+    })
+
+    const notebookNotes = noteList.filter(n => n.notebook_id === parentId && !n.is_trashed)
+    notebookNotes.sort((a, b) => (a.title || '').localeCompare(b.title || ''))
+    notebookNotes.forEach(note => {
+      children.push({
+        key: `note-${note.id}`,
+        label: note.title || '无标题',
+        icon: 'pi pi-file',
+        command: () => emit('select-note', note)
+      })
+    })
+
+    return children
+  }
+
+  const rootNotebooks = notebookList.filter(nb => !nb.parent_id)
+  rootNotebooks.sort((a, b) => a.name.localeCompare(b.name))
+
+  return rootNotebooks.map(nb => {
+    const children = buildNotebookChildren(nb.id)
+    return {
+      key: `notebook-${nb.id}`,
+      label: nb.name,
+      icon: 'pi pi-folder',
+      command: () => selectNotebook(nb),
+      items: children.length > 0 ? children : undefined
+    }
+  })
+})
+
+// PanelMenu items
+const items = computed(() => [
   {
-    label: '新建子笔记本',
-    icon: 'pi pi-folder',
-    command: () => startNewNotebook(activeMenuNotebookId.value)
+    label: '导航',
+    icon: 'pi pi-compass',
+    items: [
+      {
+        label: '全部笔记',
+        icon: 'pi pi-home',
+        command: () => handleNav('all')
+      },
+      {
+        label: '收藏',
+        icon: 'pi pi-star',
+        command: () => handleNav('favorites')
+      },
+      {
+        label: '最近编辑',
+        icon: 'pi pi-clock',
+        command: () => handleNav('recent')
+      },
+      {
+        label: '回收站',
+        icon: 'pi pi-trash',
+        command: () => handleNav('trash')
+      }
+    ]
   },
   {
-    label: '新建笔记',
-    icon: 'pi pi-file',
-    command: () => {
-      closeMenu();
-      emit('create-note', activeMenuNotebookId.value)
-    }
-  }
+    label: '笔记本',
+    icon: 'pi pi-book',
+    items: notebookTreeItems.value
+  },
+  ...(props.tags && props.tags.length > 0 ? [{
+    label: '标签',
+    icon: 'pi pi-tag',
+    items: props.tags.map(tag => ({
+      label: tag.name,
+      icon: 'pi pi-tag',
+      command: () => selectTag(tag)
+    }))
+  }] : [])
 ])
 
-function toggleNotebookMenu(notebookId, event) {
-  event.stopPropagation()
-  activeMenuNotebookId.value = notebookId
-  notebookMenuRef.value.toggle(event)
-}
-
-function closeMenu() {
-  activeMenuNotebookId.value = null
-}
-
-// New notebook creation (supports parent_id for sub-notebooks)
+// New notebook dialog
 const showNewNotebookDialog = ref(false)
 const newNotebookName = ref('')
 const newNotebookInputRef = ref(null)
@@ -164,7 +210,6 @@ function startNewNotebook(parentId = null) {
   newNotebookName.value = ''
   newNotebookParentId.value = parentId
   showNewNotebookDialog.value = true
-  closeMenu()
   nextTick(() => {
     newNotebookInputRef.value?.$el?.focus()
   })
@@ -192,74 +237,36 @@ function cancelNewNotebook() {
   newNotebookName.value = ''
   newNotebookParentId.value = null
 }
-
-function selectSearchNote(note) {
-  emit('select-note', note)
-  searchQuery.value = ''
-  searchResults.value = []
-}
-
-// Get notebook display name for a note
-function getNotebookName(note) {
-  if (note.notebook_name) return note.notebook_name
-  const nb = props.notebooks.find(n => n.id === note.notebook_id)
-  return nb ? nb.name : ''
-}
-
-/**
- * Get the active style class based on node type
- */
-function getNodeActiveClass(node) {
-  const { type, id } = node.data
-  if (type === 'nav') {
-    return activeNav.value === id
-      ? 'bg-surface-200/70 text-primary-700 font-medium shadow-sm'
-      : 'text-surface-600 hover:bg-surface-100'
-  }
-  if (type === 'notebook') {
-    return activeNav.value === `notebook-${id}`
-      ? 'bg-emerald-50 text-emerald-700 font-medium shadow-sm'
-      : 'text-surface-600 hover:bg-surface-100'
-  }
-  if (type === 'tag') {
-    return activeNav.value === `tag-${id}`
-      ? 'bg-amber-50 text-amber-700 font-medium shadow-sm'
-      : 'text-surface-600 hover:bg-surface-100'
-  }
-  return ''
-}
 </script>
 
 <template>
-  <div
-      class="sidebar-container flex flex-col h-full bg-surface-50 border-r border-app-border transition-all duration-300"
-      :class="collapsed ? 'w-14' : 'w-64'">
+  <div class="sidebar-container flex flex-col h-full bg-surface-50 border-r border-app-border overflow-hidden w-64">
 
-    <!-- Top Bar: Toggle + (Search & Add when expanded) -->
-    <div class="p-3 border-b border-app-border flex items-center gap-2">
-      <template v-if="!collapsed">
+    <!-- Search bar -->
+    <div class="p-3 border-b border-app-border flex-shrink-0">
+      <div class="flex items-center gap-2">
         <div class="flex-1 relative">
           <IconField>
             <InputIcon class="pi pi-search"/>
             <InputText
-                v-model="searchQuery"
-                placeholder="搜索笔记..."
-                class="w-full"
-                size="small"
-                @input="onSearchInput"
+              v-model="searchQuery"
+              placeholder="搜索笔记..."
+              class="w-full"
+              size="small"
+              @input="onSearchInput"
             />
           </IconField>
 
           <!-- Search Results Dropdown -->
           <div
-              v-if="searchResults.length > 0"
-              class="absolute top-full left-0 right-0 mt-1 bg-surface-0 border border-app-border rounded-lg shadow-lg z-50 max-h-48 overflow-auto"
+            v-if="searchResults.length > 0"
+            class="absolute top-full left-0 right-0 mt-1 bg-surface-0 border border-app-border rounded-lg shadow-lg z-50 max-h-48 overflow-auto"
           >
             <div
-                v-for="note in searchResults"
-                :key="note.id"
-                class="px-3 py-2 hover:bg-surface-50 cursor-pointer flex items-center gap-2"
-                @click="selectSearchNote(note)"
+              v-for="note in searchResults"
+              :key="note.id"
+              class="px-3 py-2 hover:bg-surface-50 cursor-pointer flex items-center gap-2"
+              @click="selectSearchNote(note)"
             >
               <File :size="14" class="text-surface-400"/>
               <div class="flex-1 min-w-0">
@@ -270,232 +277,48 @@ function getNodeActiveClass(node) {
           </div>
         </div>
         <Button icon="pi pi-plus" size="small" severity="secondary" aria-label="新建笔记" @click="createNote"/>
-      </template>
-      <template v-else>
-        <div class="w-full flex justify-center">
-          <Button severity="primary" size="small" @click="createNote" v-tooltip.right="'新建笔记'"
-                  class="btn-filled w-8 h-8">
-            <template #icon>
-              <Plus :size="20"/>
-            </template>
-          </Button>
-        </div>
-      </template>
+      </div>
     </div>
 
-    <!-- Navigation Content -->
-    <ScrollPanel class="flex-1">
-      <!-- Collapsed: Icon-only nav -->
-      <template v-if="collapsed">
-        <div class="py-3 flex flex-col items-center gap-1">
-          <!-- Notes nav items (collapsed) -->
-          <div
-              class="w-10 h-10 flex items-center justify-center rounded-lg cursor-pointer transition-colors"
-              :class="activeNav === 'all' ? 'bg-primary-50 text-primary-600' : 'text-surface-500 hover:bg-surface-100'"
-              @click="handleNav('all')"
-              v-tooltip.right="'所有笔记'"
-          >
-            <File :size="18"/>
-          </div>
-          <div
-              class="w-10 h-10 flex items-center justify-center rounded-lg cursor-pointer transition-colors"
-              :class="activeNav === 'favorites' ? 'bg-primary-50 text-primary-600' : 'text-surface-500 hover:bg-surface-100'"
-              @click="handleNav('favorites')"
-              v-tooltip.right="'收藏夹'"
-          >
-            <Star :size="18"/>
-          </div>
-          <div
-              class="w-10 h-10 flex items-center justify-center rounded-lg cursor-pointer transition-colors"
-              :class="activeNav === 'trash' ? 'bg-primary-50 text-primary-600' : 'text-surface-500 hover:bg-surface-100'"
-              @click="handleNav('trash')"
-              v-tooltip.right="'回收站'"
-          >
-            <Trash2 :size="18"/>
-          </div>
+    <!-- PanelMenu -->
+    <div class="flex-1 px-2 gap-1 ">
+      <Menu :model="items11"/>
+      <div v-for="(item,index) in items11" :key="index" class="flex items-center gap-2 px-2 py-1 cursor-pointer hover:bg-[#f1f5f9]">
+        <LucideIcon :name="item.icon" size="16 " color="red"></LucideIcon>
+        {{ item.label }}
+      </div>
+    </div>
 
-          <div class="w-8 h-px bg-surface-200 my-2"/>
-
-          <!-- Notebooks (collapsed) -->
-          <div
-              v-for="nb in flatNotebooks.filter(nb => !nb.parent_id)"
-              :key="nb.id"
-              class="w-10 h-10 flex items-center justify-center rounded-lg cursor-pointer transition-colors"
-              :class="activeNav === `notebook-${nb.id}` ? 'bg-emerald-50 text-emerald-600' : 'text-surface-500 hover:bg-surface-100'"
-              @click="selectNotebook(nb)"
-              v-tooltip.right="nb.name"
-          >
-            <BookOpen :size="18"/>
-          </div>
-
-          <div class="w-8 h-px bg-surface-200 my-2"/>
-
-          <!-- Tags (collapsed) -->
-          <div
-              v-for="tag in tags"
-              :key="tag.id"
-              class="w-10 h-10 flex items-center justify-center rounded-lg cursor-pointer transition-colors"
-              :class="activeNav === `tag-${tag.id}` ? 'bg-amber-50 text-amber-600' : 'text-surface-500 hover:bg-surface-100'"
-              @click="selectTag(tag)"
-              v-tooltip.right="tag.name"
-          >
-            <Hash :size="18"/>
-          </div>
-        </div>
-      </template>
-
-      <!-- Expanded: Unified Tree -->
-      <template v-else>
-        <div class="py-2">
-          <Tree
-              :value="sidebarTree"
-              :expandedKeys="expandedKeys"
-              selectionMode="single"
-              :selectionKeys="selectedTreeKey ? { [selectedTreeKey]: true } : {}"
-              @node-select="onTreeSelect"
-              class="w-full sidebar-tree"
-              :pt="{
-              root: { class: 'border-none bg-transparent w-full !p-0' },
-              node: { class: 'py-0.5 w-full', style: 'width: 100%' },
-              nodeContent: {
-                class: ({ instance }) => [
-                  'rounded-lg transition-colors min-w-0 w-full',
-                  instance.selected
-                    ? 'bg-primary-50 text-primary-700 font-medium dark:bg-primary-900/30 dark:text-primary-300'
-                    : 'hover:bg-surface-100 dark:hover:bg-surface-800'
-                ],
-                style: 'width: 100%'
-              },
-              nodeLabel: { class: 'text-sm truncate' },
-              nodeIcon: { class: 'hidden' },
-              toggler: { class: 'w-6 h-6 shrink-0' }
-            }"
-          >
-            <template #default="slotProps">
-              <!-- Group node (non-selectable header) -->
-              <div
-                  v-if="slotProps.node.data.type === 'group'"
-                  class="flex items-center gap-2 py-1 px-1 w-full cursor-pointer hover:bg-surface-100 dark:hover:bg-surface-800 rounded-lg transition-colors"
-                  @click="toggleNodeExpanded(slotProps.node.key)"
-              >
-                <span class="text-xs font-semibold text-surface-400 uppercase tracking-wider">
-                  {{ slotProps.node.label }}
-                </span>
-                <button
-                    v-if="slotProps.node.data.id === 'notebooks'"
-                    class="w-5 h-5 flex items-center justify-center rounded hover:bg-surface-200 text-surface-400 hover:text-surface-600 transition-colors ml-auto"
-                    @click.stop="startNewNotebook"
-                    title="新建笔记本"
-                >
-                  <Plus :size="12"/>
-                </button>
-              </div>
-
-              <!-- Nav node (笔记导航项) -->
-              <div
-                  v-else-if="slotProps.node.data.type === 'nav'"
-                  class="flex items-center gap-3 py-1.5 px-1 w-full"
-              >
-                <component
-                    :is="slotProps.node.data.id === 'all' ? File :
-                         slotProps.node.data.id === 'favorites' ? Star : Trash2"
-                    :size="18"
-                />
-                <span class="text-sm">{{ slotProps.node.label }}</span>
-              </div>
-
-              <!-- Notebook node -->
-              <div
-                  v-else-if="slotProps.node.data.type === 'notebook'"
-                  class="relative flex items-center justify-between w-full gap-1 py-1 px-1 min-w-0 group/node pr-8"
-              >
-                <span class="text-sm truncate flex-1">{{ slotProps.node.label }}</span>
-                <button
-                    class="absolute right-1 w-6 h-6 flex items-center justify-center rounded hover:bg-surface-200 text-surface-400 hover:text-surface-600 opacity-0 group-hover/node:opacity-100 transition-opacity"
-                    @click.stop="toggleNotebookMenu(slotProps.node.data.id, $event)"
-                >
-                  <MoreHorizontal :size="14"/>
-                </button>
-              </div>
-
-              <!-- Note node -->
-              <div
-                  v-else-if="slotProps.node.data.type === 'note'"
-                  class="flex items-center gap-2 py-1 px-1 w-full"
-              >
-                <File :size="14" class="text-surface-400 shrink-0"/>
-                <span class="text-sm truncate">{{ slotProps.node.label }}</span>
-              </div>
-
-              <!-- Tag node -->
-              <div
-                  v-else-if="slotProps.node.data.type === 'tag'"
-                  class="flex items-center gap-3 py-1.5 px-1 w-full group/tag"
-              >
-                <div class="w-3 h-3 rounded-full flex-shrink-0 bg-amber-400"/>
-                <span class="text-sm flex-1 truncate">{{ slotProps.node.label }}</span>
-                <span class="text-xs text-surface-400 opacity-0 group-hover/tag:opacity-100 transition-opacity">
-                  {{ slotProps.node.data.note_count || 0 }}
-                </span>
-              </div>
-            </template>
-          </Tree>
-          <Menu ref="notebookMenuRef" :model="notebookMenuItems" :popup="true"/>
-        </div>
-      </template>
-    </ScrollPanel>
-
-    <!-- Bottom Actions -->
-    <div class="p-3 border-t border-app-border">
-      <template v-if="collapsed">
-        <div class="flex flex-col items-center gap-2">
-          <Button text severity="secondary" @click="toggleTheme"
-                  v-tooltip.right="theme === 'light' ? '切换暗色模式' : theme === 'dark' ? '跟随系统' : '切换亮色模式'"
-                  class="btn-icon w-10 h-10">
-            <template #icon>
-              <Sun v-if="theme === 'light'" :size="20"/>
-              <Moon v-else-if="theme === 'dark'" :size="20"/>
-              <Monitor v-else :size="20"/>
-            </template>
-          </Button>
-          <Button text severity="secondary" @click="handleNav('settings')" v-tooltip.right="'设置'"
-                  class="btn-icon w-10 h-10">
-            <template #icon>
-              <Settings :size="20"/>
-            </template>
-          </Button>
-        </div>
-      </template>
-      <template v-else>
-        <div class="flex items-center gap-2">
-          <Button text severity="secondary" @click="toggleTheme" class="btn-icon h-10 px-3 flex items-center gap-2">
-            <template #icon>
-              <Sun v-if="theme === 'light'" :size="18"/>
-              <Moon v-else-if="theme === 'dark'" :size="18"/>
-              <Monitor v-else :size="18"/>
-            </template>
-            <span class="text-sm">{{ theme === 'light' ? '浅色' : theme === 'dark' ? '深色' : '系统' }}</span>
-          </Button>
-          <Button text severity="secondary" @click="handleNav('settings')"
-                  class="btn-icon h-10 px-3 flex items-center gap-2 flex-1">
-            <template #icon>
-              <Settings :size="18"/>
-            </template>
-            <span class="text-sm">设置</span>
-          </Button>
-        </div>
-      </template>
+    <!-- Bottom bar: theme + settings -->
+    <div class="border-t border-app-border p-3 flex-shrink-0">
+      <div class="flex items-center gap-2">
+        <Button text severity="secondary" @click="toggleTheme" class="btn-icon h-10 px-3 flex items-center gap-2">
+          <template #icon>
+            <Sun v-if="theme === 'light'" :size="18"/>
+            <Moon v-else-if="theme === 'dark'" :size="18"/>
+            <Monitor v-else :size="18"/>
+          </template>
+          <span class="text-sm">{{ theme === 'light' ? '浅色' : theme === 'dark' ? '深色' : '系统' }}</span>
+        </Button>
+        <Button text severity="secondary" @click="handleNav('settings')"
+                class="btn-icon h-10 px-3 flex items-center gap-2 flex-1">
+          <template #icon>
+            <Settings :size="18"/>
+          </template>
+          <span class="text-sm">设置</span>
+        </Button>
+      </div>
     </div>
 
     <!-- New Notebook Dialog -->
     <Dialog
-        v-model:visible="showNewNotebookDialog"
-        :header="newNotebookParentId ? '新建子笔记本' : '新建笔记本'"
-        :modal="true"
-        :closable="true"
-        :draggable="false"
-        class="w-80"
-        @hide="cancelNewNotebook"
+      v-model:visible="showNewNotebookDialog"
+      :header="newNotebookParentId ? '新建子笔记本' : '新建笔记本'"
+      :modal="true"
+      :closable="true"
+      :draggable="false"
+      class="w-80"
+      @hide="cancelNewNotebook"
     >
       <div class="flex flex-col gap-3">
         <div v-if="newNotebookParentId" class="text-sm text-surface-400">
@@ -503,13 +326,13 @@ function getNodeActiveClass(node) {
         </div>
         <label for="new-notebook-name" class="text-sm text-surface-600">笔记本名称</label>
         <InputText
-            id="new-notebook-name"
-            ref="newNotebookInputRef"
-            v-model="newNotebookName"
-            placeholder="请输入笔记本名称"
-            class="w-full"
-            autofocus
-            @keyup.enter="confirmNewNotebook"
+          id="new-notebook-name"
+          ref="newNotebookInputRef"
+          v-model="newNotebookName"
+          placeholder="请输入笔记本名称"
+          class="w-full"
+          autofocus
+          @keyup.enter="confirmNewNotebook"
         />
       </div>
       <template #footer>
@@ -521,74 +344,77 @@ function getNodeActiveClass(node) {
 </template>
 
 <style scoped>
-.collapse-enter-active,
-.collapse-leave-active {
-  transition: all 0.2s ease;
-  overflow: hidden;
+.sidebar-container :deep(.p-menu) {
+  border: 0;
+  background: transparent;
 }
 
-.collapse-enter-from,
-.collapse-leave-to {
-  opacity: 0;
-  max-height: 0;
-}
-
-.collapse-enter-to,
-.collapse-leave-from {
-  opacity: 1;
-  max-height: 500px;
-}
-
-/* Custom styles for sidebar tree */
-.sidebar-tree :deep(.p-tree) {
+/*
+.sidebar-container :deep(.p-menu-list) {
   padding: 0;
 }
 
-.sidebar-tree :deep(.p-tree-node) {
-  padding: 0;
-  width: 100%;
+.sidebar-container :deep(.p-menu-item-content) {
+  border-radius: 0;
 }
 
-.sidebar-tree :deep(.p-tree-node-content) {
-  padding: 0.25rem 0.5rem;
-  border-radius: 0.5rem;
-  transition: background-color 0.2s;
-  min-width: 0;
-  width: 100%;
-}
-
-.sidebar-tree :deep(.p-tree-node-content:hover) {
+.sidebar-container :deep(.p-menu-item-content:hover) {
   background-color: var(--surface-100);
 }
 
-:root.dark .sidebar-tree :deep(.p-tree-node-content:hover) {
+:root.dark .sidebar-container :deep(.p-menu-item-content:hover) {
+  background-color: var(--surface-800);
+}*/
+
+.sidebar-container :deep(.p-panelmenu) {
+  border: 0;
+  background: transparent;
+}
+
+.sidebar-container :deep(.p-panelmenu-panel) {
+  border: 0;
+  border-radius: 0;
+  background: transparent;
+}
+
+.sidebar-container :deep(.p-panelmenu-header) {
+  border: 0;
+  border-radius: 0;
+  background: transparent;
+}
+
+.sidebar-container :deep(.p-panelmenu-header-content) {
+  border-radius: 0;
+}
+
+.sidebar-container :deep(.p-panelmenu-header-content:hover) {
+  background-color: var(--surface-100);
+}
+
+:root.dark .sidebar-container :deep(.p-panelmenu-header-content:hover) {
   background-color: var(--surface-800);
 }
 
-.sidebar-tree :deep(.p-tree-node-selected) {
-  /* Handled by pt nodeContent dynamic class */
+.sidebar-container :deep(.p-panelmenu-content) {
+  border: 0;
+  border-radius: 0;
+  background: transparent;
+  padding: 0;
 }
 
-.sidebar-tree :deep(.p-tree-toggler) {
-  width: 1.5rem;
-  height: 1.5rem;
-  margin-right: 0;
+.sidebar-container :deep(.p-panelmenu-item-content) {
+  border-radius: 0;
 }
 
-.sidebar-tree :deep(.p-tree-node-label) {
-  font-size: 0.875rem;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-  width: 100%;
+.sidebar-container :deep(.p-panelmenu-item-content:hover) {
+  background-color: var(--surface-100);
 }
 
-/* Group nodes should not show hover effect */
-.sidebar-tree :deep(.p-tree-node-content:has(.text-xs.font-semibold)) {
-  cursor: default;
+:root.dark .sidebar-container :deep(.p-panelmenu-item-content:hover) {
+  background-color: var(--surface-800);
 }
 
-.sidebar-tree :deep(.p-tree-node-content:has(.text-xs.font-semibold):hover) {
-  background-color: transparent;
+.sidebar-container :deep(.p-panelmenu-submenu) {
+  padding-left: 0.25rem;
 }
 </style>
diff --git a/src/renderer/src/main.js b/src/renderer/src/main.js
index 4d589a7..6d294f7 100644
--- a/src/renderer/src/main.js
+++ b/src/renderer/src/main.js
@@ -3,6 +3,7 @@ import { createPinia } from 'pinia'
 import PrimeVue from 'primevue/config'
 import Aura from '@primeuix/themes/aura'
 import Tooltip from 'primevue/tooltip'
+import Ripple from 'primevue/ripple'
 import App from './App.vue'
 import './assets/styles/main.css'
 import 'primeicons/primeicons.css'
@@ -21,5 +22,6 @@ app.use(PrimeVue, {
 
 app.use(pinia)
 app.directive('tooltip', Tooltip)
+app.directive('ripple', Ripple)
 
 app.mount('#app')