스크롤 초기화 기능 추가

lib/plan_page_detail.dart

@@ -51,6 +51,7 @@ class _PlanPageDetailState extends State<PlanPageDetail> {
   late int _currentBottomNavIndex;
   String? _selectedYoutubeUrl;
   PlanDetailItem? _selectedItem; // <<< 선택된 아이템을 저장할 변수 추가
+  final ScrollController _scrollController = ScrollController(); // 스크롤 컨트롤러 추가
 
   @override
   void initState() {
@@ -124,6 +125,12 @@ class _PlanPageDetailState extends State<PlanPageDetail> {
     );
   }
 
+  @override
+  void dispose() {
+    _scrollController.dispose(); // 스크롤 컨트롤러 해제
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -191,6 +198,7 @@ class _PlanPageDetailState extends State<PlanPageDetail> {
                       final item = details[index];
                       return GestureDetector(
                         onTap: () {
+                          _scrollController.jumpTo(0); // 스크롤 맨 위로 이동
                           setState(() {
                             _selectedItem = item;
                             if (item.lessonUrl.isNotEmpty &&
@@ -292,6 +300,7 @@ class _PlanPageDetailState extends State<PlanPageDetail> {
                 ),
                 Expanded(
                   child: SingleChildScrollView(
+                    controller: _scrollController, // 스크롤 컨트롤러 연결
                     padding: const EdgeInsets.all(16.0),
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
@@ -337,7 +346,7 @@ class _PlanPageDetailState extends State<PlanPageDetail> {
                               ),
                             ),
                             IconButton(
-                              icon: const Icon(Icons.play_circle_fill, size: 40, color: Colors.red),
+                              icon: const Icon(Icons.play_circle_fill, size: 40, color: Colors.blue),
                               onPressed: () {
                                 if (_selectedYoutubeUrl != null && _selectedYoutubeUrl!.isNotEmpty) {
                                   Navigator.push(