feat(JoinFamily): 添加家庭选择弹窗功能

实现家庭选择弹窗组件，包含搜索、列表展示和确认功能
将@click事件统一改为@tap以优化移动端体验
添加过渡动画和样式优化

@@ -17,6 +17,7 @@ declare module 'vue' {
     NutInput: typeof import('@nutui/nutui-taro')['Input']
     NutPicker: typeof import('@nutui/nutui-taro')['Picker']
     NutPopup: typeof import('@nutui/nutui-taro')['Popup']
+    NutSearchbar: typeof import('@nutui/nutui-taro')['Searchbar']
     NutToast: typeof import('@nutui/nutui-taro')['Toast']
     Picker: typeof import('./src/components/time-picker-data/picker.vue')['default']
     PointsCollector: typeof import('./src/components/PointsCollector.vue')['default']

@@ -15,6 +15,7 @@
   display: flex;
   align-items: center;
   justify-content: center;
+  transition: border-color 0.2s;
 }
 
 .motto-input {
@@ -32,7 +33,48 @@
 }
 
 .identity-title {
-  font-size: 1.25rem;
-  font-weight: 700;
-  margin-bottom: 1rem;
+  font-size: 32rpx;
+  font-weight: 600;
+  color: #374151;
+  margin-bottom: 24rpx;
+}
+
+// 家庭选择弹窗样式
+.family-selector-container {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  background: white;
+}
+
+.family-item {
+  cursor: pointer;
+  transition: all 0.2s ease;
+
+  &:hover {
+    transform: translateY(-2rpx);
+    box-shadow: 0 4rpx 16rpx rgba(0, 0, 0, 0.1);
+  }
+
+  &:active {
+    transform: translateY(0);
+  }
+}
+
+// 文本截断样式
+.line-clamp-2 {
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+// 间距样式
+.space-y-3 > * + * {
+  margin-top: 24rpx;
+}
+
+.space-x-3 > * + * {
+  margin-left: 24rpx;
 }

@@ -45,7 +45,7 @@
           <view
             v-for="role in familyRoles"
             :key="role.id"
-            @click="selectedRole = role.id"
+            @tap="selectedRole = role.id"
             :class="[
               'w-[calc(49%-4rpx)] py-3 rounded-lg border text-center flex flex-col items-center gap-1',
               selectedRole === role.id
@@ -60,7 +60,7 @@
       </view>
       <!-- Submit Button -->
       <view
-        @click="handleJoinFamily"
+        @tap="handleJoinFamily"
         :disabled="!isComplete"
         :class="[
           'w-full py-3 text-white text-lg font-medium rounded-lg mt-auto text-center',
@@ -70,13 +70,104 @@
         加入家庭
       </view>
     </view>
+
+    <!-- 家庭选择弹窗 -->
+    <nut-popup
+      v-model:visible="showFamilySelector"
+      position="bottom"
+      :style="{ height: '80vh' }"
+      round
+      closeable
+      @close="closeFamilySelector"
+    >
+      <view class="family-selector-container">
+        <!-- 标题 -->
+        <view class="text-lg font-bold text-center py-4 border-b border-gray-100">
+          选择要加入的家庭
+        </view>
+
+        <!-- 搜索框 -->
+        <view class="p-4">
+          <nut-searchbar
+            v-model="searchKeyword"
+            placeholder="搜索家庭名称"
+            @search="handleSearch"
+            @clear="handleClearSearch"
+          />
+        </view>
+
+        <!-- 家庭列表 -->
+        <view class="flex-1 px-4 pb-4">
+          <view
+            ref="familyListContainer"
+            class="space-y-3 overflow-y-auto"
+            :style="{ maxHeight: familyListHeight + 'rpx' }"
+          >
+            <view
+              v-for="family in filteredFamilies"
+              :key="family.id"
+              @tap="selectFamily(family.id)"
+              :class="[
+                'family-item p-4 border rounded-lg flex items-center space-x-3',
+                selectedFamilyId === family.id
+                  ? 'border-blue-500 bg-blue-50'
+                  : 'border-gray-200 bg-white'
+              ]"
+            >
+              <!-- 家庭头像 -->
+              <view class="w-12 h-12 rounded-full bg-gray-200 flex items-center justify-center overflow-hidden">
+                <image
+                  v-if="family.avatar"
+                  :src="family.avatar"
+                  class="w-full h-full object-cover"
+                />
+                <view v-else class="text-gray-500 text-xs">头像</view>
+              </view>
+
+              <!-- 家庭信息 -->
+              <view class="flex-1">
+                <view class="font-medium text-gray-900 mb-1">{{ family.name }}</view>
+                <view class="text-sm text-gray-600 line-clamp-2">{{ family.description }}</view>
+              </view>
+
+              <!-- 选中状态 -->
+              <view v-if="selectedFamilyId === family.id" class="text-blue-500">
+                <Check size="20" />
+              </view>
+            </view>
+          </view>
+        </view>
+
+        <!-- 底部按钮 -->
+        <view class="flex gap-3 p-4 border-t border-gray-100">
+          <nut-button
+            @click="closeFamilySelector"
+            class="flex-1"
+            type="default"
+            size="large"
+            plain
+          >
+            关闭
+          </nut-button>
+          <nut-button
+            @click="confirmJoinFamily"
+            class="flex-1"
+            :color="selectedFamilyId ? '#3b82f6' : 'gray'"
+            :disabled="!selectedFamilyId"
+            size="large"
+          >
+            确认
+          </nut-button>
+        </view>
+      </view>
+    </nut-popup>
   </view>
 </template>
 
 <script setup>
-import { ref, computed, nextTick } from 'vue';
+import { ref, computed, nextTick, onMounted, watch } from 'vue';
 import Taro from '@tarojs/taro';
-import { My } from '@nutui/icons-vue-taro';
+import { My, Check } from '@nutui/icons-vue-taro';
 import AppHeader from '../../components/AppHeader.vue';
 
 const mottoChars = ref(['', '', '', '']);
@@ -84,6 +175,14 @@ const selectedRole = ref('');
 const inputRefs = ref([]);
 const focusedIndex = ref(-1);
 
+// 弹窗相关数据
+const showFamilySelector = ref(false);
+const searchKeyword = ref('');
+const selectedFamilyId = ref('');
+const mockFamilies = ref([]);
+const familyListContainer = ref(null);
+const familyListHeight = ref(400); // 默认高度
+
 const handleInputChange = (index, value) => {
   // 允许输入多个字符，但只保留第一个有效字符（汉字、数字、大小写字母），兼容输入法
   if (value) {
@@ -141,15 +240,186 @@ const familyRoles = [
   { id: 'maternal-granddaughter', label: '外孙女' }
 ];
 
+// Mock家庭数据
+const generateMockFamilies = () => {
+  return [
+    {
+      id: '1',
+      name: '幸福之家',
+      description: '我们是一个温馨和睦的大家庭，每天一起运动健身，分享生活的美好时光。',
+      avatar: 'https://placehold.co/100x100/e2f3ff/0369a1?text=幸福&font=roboto'
+    },
+    {
+      id: '2',
+      name: '健康家园',
+      description: '注重健康生活，坚持每日步行锻炼，用积分兑换健康好礼。',
+      avatar: 'https://placehold.co/100x100/f0f9ff/0284c7?text=健康&font=roboto'
+    },
+    {
+      id: '3',
+      name: '快乐一家人',
+      description: '快乐是我们家的主旋律，一起运动，一起成长，一起享受生活。',
+      avatar: 'https://placehold.co/100x100/fef3c7/d97706?text=快乐&font=roboto'
+    },
+    {
+      id: '4',
+      name: '幸福一家人',
+      description: '快乐是我们家的主旋律，一起运动，一起成长，一起享受生活。',
+      avatar: 'https://placehold.co/100x100/fef3c7/d97706?text=快乐&font=roboto'
+    },
+    {
+      id: '5',
+      name: '幸福一家人',
+      description: '快乐是我们家的主旋律，一起运动，一起成长，一起享受生活。',
+      avatar: 'https://placehold.co/100x100/fef3c7/d97706?text=快乐&font=roboto'
+    },
+  ]
+};
+
 const isComplete = computed(() => {
   return mottoChars.value.every((char) => char) && selectedRole.value;
 });
 
-const handleJoinFamily = () => {
-  if (isComplete.value) {
-    Taro.reLaunch({
+// 过滤后的家庭列表
+const filteredFamilies = computed(() => {
+  if (!searchKeyword.value) {
+    return mockFamilies.value
+  }
+  return mockFamilies.value.filter(family =>
+    family.name.includes(searchKeyword.value) ||
+    family.description.includes(searchKeyword.value)
+  )
+});
+
+// 处理搜索
+const handleSearch = (value) => {
+  searchKeyword.value = value
+  // 搜索时重置选中的家庭
+  selectedFamilyId.value = ''
+}
+
+// 清除搜索
+const handleClearSearch = () => {
+  searchKeyword.value = ''
+  // 清除搜索时重置选中的家庭
+  selectedFamilyId.value = ''
+};
+
+// 选择家庭
+const selectFamily = (familyId) => {
+  selectedFamilyId.value = familyId
+};
+
+// 关闭家庭选择器
+const closeFamilySelector = () => {
+  showFamilySelector.value = false
+  selectedFamilyId.value = ''
+  searchKeyword.value = ''
+}
+
+/**
+ * 计算家庭列表容器的可用高度
+ */
+const calculateFamilyListHeight = async () => {
+  try {
+    // 获取系统信息
+    const systemInfo = await Taro.getSystemInfo()
+    const windowHeight = systemInfo.windowHeight
+
+    // 弹窗高度为70vh
+    const popupHeight = windowHeight * 0.8
+
+    // 减去固定元素的高度（估算值，单位px转rpx需要乘以2）
+    const titleHeight = 60 * 2 // 标题区域
+    const searchHeight = 80 * 2 // 搜索区域
+    const buttonHeight = 80 * 2 // 底部按钮区域
+    const padding = 32 * 2 // 内边距
+
+    // 计算可用高度（px转rpx）
+    const availableHeight = (popupHeight - (titleHeight + searchHeight + buttonHeight + padding) / 2)
+
+    // 设置最小高度和最大高度
+    familyListHeight.value = Math.max(200, Math.min(availableHeight * 2, 800))
+  } catch (error) {
+    console.error('计算高度失败:', error)
+    familyListHeight.value = 400 // 使用默认值
+  }
+}
+
+// 监听弹窗显示状态，动态计算高度
+watch(showFamilySelector, async (newVal) => {
+  if (newVal) {
+    await nextTick()
+    await calculateFamilyListHeight()
+  }
+})
+
+// 监听搜索关键词变化，重置选中的家庭
+watch(searchKeyword, () => {
+  selectedFamilyId.value = ''
+})
+
+// 确认加入家庭
+const confirmJoinFamily = () => {
+  if (!selectedFamilyId.value) {
+    Taro.showToast({
+      title: '请选择一个家庭',
+      icon: 'none'
+    })
+    return
+  }
+
+  const selectedFamily = mockFamilies.value.find(f => f.id === selectedFamilyId.value)
+  console.log('确认加入家庭:', selectedFamily)
+
+  // 关闭弹窗
+  closeFamilySelector()
+
+  // 跳转到Dashboard
+  Taro.redirectTo({
     url: '/pages/Dashboard/index'
-    });
+  })
+};
+
+const handleJoinFamily = async () => {
+  if (!isComplete.value) return
+
+  const motto = mottoChars.value.join('')
+
+  try {
+    // TODO: 调用API查询家庭
+    // const families = await api.queryFamiliesByMotto(motto)
+
+    // 模拟API响应 - 生成mock数据
+    const families = generateMockFamilies()
+
+    console.log('查询家庭:', { motto, role: selectedRole.value, families })
+
+    if (families.length === 0) {
+      Taro.showToast({
+        title: '未找到匹配的家庭',
+        icon: 'none'
+      })
+      return
+    }
+
+    if (families.length === 1) {
+      // 只有一个家庭，直接跳转
+      console.log('直接加入家庭:', families[0])
+      Taro.redirectTo({
+        url: '/pages/Dashboard/index'
+      })
+    } else {
+      // 多个家庭，显示选择弹窗
+      mockFamilies.value = families
+      showFamilySelector.value = true
+    }
+  } catch (error) {
+    console.error('加入家庭失败:', error)
+    Taro.showToast({
+      title: '加入失败，请重试',
+      icon: 'none'
+    })
   }
 };
 </script>