feat:更新主题色适配

lib/widgets/recipe/calendar.dart

@@ -146,42 +146,47 @@ class _RecipeCalendarState extends State<RecipeCalendar> {
     bool isToday,
     FoodProvider provider,
   ) {
+    final colors = Theme.of(context).colorScheme;
     // 检查当前日期是否在需要显示红点的列表中
     bool shouldShowRedDot = provider.recordList.any(
       (item) => item.date == formatDateTime(day),
     );
 
+    late Color boxColor;
+    if (isSelected) {
+      boxColor = colors.secondary;
+    } else {
+      boxColor = isToday ? colors.primary : Colors.transparent;
+    }
+
+    late Color textColor;
+    if (isSelected) {
+      textColor = colors.surface;
+    } else {
+      textColor = isToday ? colors.surface : colors.onSurface;
+    }
+
     return Container(
       width: 40,
       height: 40,
-      margin: EdgeInsets.all(2),
-      decoration: BoxDecoration(
-        color:
-            isSelected
-                ? Theme.of(context).primaryColor
-                : isToday
-                ? Colors.grey[300]
-                : Colors.transparent,
-        shape: BoxShape.circle,
-      ),
-      child: Column(
-        mainAxisAlignment: MainAxisAlignment.center,
-        mainAxisSize: MainAxisSize.min,
+      decoration: BoxDecoration(color: boxColor, shape: BoxShape.circle),
+      child: Stack(
+        alignment: Alignment.center,
         children: [
-          // 日期数字
-          Text(
-            day.day.toString(),
-            style: TextStyle(color: isSelected ? Colors.white : Colors.black),
-          ),
-          // 底部红点 - 只在指定日期显示
+          // 日期数字始终居中
+          Text(day.day.toString(), style: TextStyle(color: textColor)),
+
+          // 红点
           if (shouldShowRedDot)
-            Container(
-              margin: EdgeInsets.only(top: 2),
-              width: 6,
-              height: 6,
-              decoration: BoxDecoration(
-                color: Colors.red,
-                shape: BoxShape.circle,
+            Align(
+              alignment: Alignment(0, 0.8),
+              child: Container(
+                width: 6,
+                height: 6,
+                decoration: BoxDecoration(
+                  color: Colors.red,
+                  shape: BoxShape.circle,
+                ),
               ),
             ),
         ],