refactor(页面布局): 重构打卡页面布局为固定日历和可滚动内容区域

将日历组件改为固定定位，内容区域改为可滚动布局
动态计算日历高度并设置内容区域margin-top
移除日历背景样式以保持整体设计一致

 <!--
  * @Date: 2025-01-25 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-24 22:41:07
+ * @LastEditTime: 2025-09-25 09:37:57
  * @FilePath: /mlaj/src/components/ui/CollapsibleCalendar.vue
  * @Description: 可折叠日历组件
 -->
 <template>
-    <div class="collapsible-calendar">
+    <div class="collapsible-calendar ">
         <!-- 折叠状态显示 -->
         <div v-if="!isExpanded" class="calendar-collapsed" @click="expandCalendar">
             <div class="calendar-header">
@@ -165,8 +165,8 @@ defineExpose({
 }
 
 .calendar-collapsed {
-    background: linear-gradient(135deg, #ffffff 0%, #f8fffe 100%);
-    border-radius: 16px;
+    // background: linear-gradient(135deg, #ffffff 0%, #f8fffe 100%);
+    // border-radius: 16px;
     padding: 20px;
     box-shadow: 0 4px 20px rgba(76, 175, 80, 0.08), 0 2px 8px rgba(0, 0, 0, 0.06);
     cursor: pointer;

 <!--
   * @Date: 2025-05-29 15:34:17
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-09-24 21:56:56
+ * @LastEditTime: 2025-09-25 09:30:55
  * @FilePath: /mlaj/src/views/checkin/IndexCheckInPage.vue
   * @Description: 文件描述
 -->
 <template>
   <AppLayout :hasTitle="false">
     <van-config-provider :theme-vars="themeVars">
+      <!-- 固定的日历组件 -->
+      <div class="fixed-calendar">
         <CollapsibleCalendar
-        ref="myRefCalendar" 
+          ref="calendarRef"
           :title="taskDetail.title"
           :formatter="formatter"
           v-model="selectedDate"
           @select="onSelectDay"
           @click-subtitle="onClickSubtitle"
         />
+      </div>
+
+      <!-- 可滚动的内容区域 -->
+      <div class="scrollable-content">
+        <div class="text-wrapper">
+          <div class="text-header">作业描述</div>
+        </div>
 
         <div v-if="showProgress" class="text-wrapper">
           <div class="text-header">目标进度</div>
@@ -52,10 +61,6 @@
           </div>
         </div>
 
-      <div class="text-wrapper">
-        <div class="text-header">作业描述</div>
-      </div>
-
         <div v-if="!taskDetail.is_finish" class="text-wrapper">
           <div class="text-header">打卡类型</div>
           <div class="upload-wrapper">
@@ -166,6 +171,7 @@
         </div>
 
         <div style="height: 5rem;"></div>
+      </div> <!-- 闭合 scrollable-content -->
     </van-config-provider>
 
     <van-dialog v-model:show="dialog_show" title="标题" show-cancel-button></van-dialog>
@@ -196,45 +202,20 @@ const myRefCalendar = ref(null);
 const windowHeight = ref(window.innerHeight);
 const windowWidth = ref(window.innerWidth);
 
+// 日历高度相关的响应式数据
+const calendarRef = ref(null);
+const calendarHeight = ref(200); // 默认高度
+
 /**
- * 动态计算日历高度
- * 根据屏幕尺寸和设备类型自适应调整
+ * 动态获取日历组件的实际高度
  */
-const calendarHeight = computed(() => {
-  // 获取可视窗口高度
-  const viewportHeight = windowHeight.value;
-
-  // 预留给其他内容的空间（头部、底部等）
-  const reservedSpace = 200; // 可根据实际需要调整
-
-  // 计算可用高度
-  const availableHeight = viewportHeight - reservedSpace;
-
-  // 设置最小和最大高度限制
-  const minHeight = 300; // 最小高度
-  const maxHeight = 500; // 最大高度
-
-  // 根据屏幕宽度调整高度比例
-  let heightRatio = 0.6; // 默认占可用高度的55%
-
-  if (windowWidth.value < 375) {
-    // 小屏手机
-    heightRatio = 0.95;
-  } else if (windowWidth.value < 414) {
-    // 中等屏幕手机
-    heightRatio = 0.95;
-  } else if (windowWidth.value >= 768) {
-    // 平板或更大屏幕
-    heightRatio = 0.95;
+const updateCalendarHeight = async () => {
+    await nextTick();
+    if (calendarRef.value) {
+        const rect = calendarRef.value.$el.getBoundingClientRect();
+        calendarHeight.value = rect.height;
     }
-
-  const calculatedHeight = Math.floor(availableHeight * heightRatio);
-
-  // 确保高度在合理范围内
-  const finalHeight = Math.max(minHeight, Math.min(maxHeight, calculatedHeight));
-
-  return `${finalHeight}px`;
-});
+};
 
 /**
  * 监听窗口尺寸变化
@@ -242,6 +223,8 @@ const calendarHeight = computed(() => {
 const handleResize = () => {
     windowHeight.value = window.innerHeight;
     windowWidth.value = window.innerWidth;
+    // 重新计算日历高度
+    updateCalendarHeight();
 };
 
 // 组件挂载时添加事件监听
@@ -252,6 +235,9 @@ onMounted(() => {
     // 延迟更新，等待方向变化完成
     setTimeout(handleResize, 100);
   });
+
+  // 初始化时计算日历高度
+  updateCalendarHeight();
 });
 
 // 存储所有视频播放器的引用
@@ -731,6 +717,25 @@ const formatData = (data) => {
 </script>
 
 <style lang="less">
+// 固定日历样式
+.fixed-calendar {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    z-index: 1000;
+    background: linear-gradient(to bottom right, #f0fdf4, #f0fdfa, #eff6ff); // 与AppLayout保持一致的渐变背景
+    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
+}
+
+// 可滚动内容区域样式
+.scrollable-content {
+    margin-top: v-bind('calendarHeight + "px"'); // 动态计算日历高度
+    padding-top: 1rem;
+    height: v-bind('"calc(100vh - " + calendarHeight + "px)"'); // 动态计算剩余高度
+    overflow-y: auto;
+}
+
 .van-back-top {
   background-color: #4caf50;
 }