Mudanças na aba de quiz

lib/core/services/materials_rag_service.dart

@@ -21,7 +21,8 @@ class MaterialsRAGService {
 
   /// Listar materiais disponíveis para o aluno autenticado
   /// Retorna apenas materiais cujo classId corresponde a uma turma onde o aluno está inscrito
-  static Future<List<Map<String, String>>> getAvailableMaterialsForStudent() async {
+  static Future<List<Map<String, String>>>
+  getAvailableMaterialsForStudent() async {
     try {
       final user = _auth.currentUser;
       if (user == null) return [];
@@ -62,7 +63,13 @@ class MaterialsRAGService {
         final classId = data['classId'] as String?;
         if (classId == null || enrolledClassIds.contains(classId)) {
           final fileName = data['fileName'] as String? ?? 'Material';
-          result.add({'id': doc.id, 'name': fileName});
+          final teacherId = data['teacherId'] as String?;
+          result.add({
+            'id': doc.id,
+            'name': fileName,
+            if (classId != null) 'classId': classId,
+            if (teacherId != null) 'teacherId': teacherId,
+          });
         }
       }
 
@@ -120,9 +127,12 @@ class MaterialsRAGService {
           // Usar cache do texto completo se disponível (sufixo v2 invalida caches antigos)
           final cacheKey = '${fileName}_v6';
           String fullText;
-          if (_chunksCache.containsKey(cacheKey) && _chunksCache[cacheKey]!.isNotEmpty) {
+          if (_chunksCache.containsKey(cacheKey) &&
+              _chunksCache[cacheKey]!.isNotEmpty) {
             fullText = _chunksCache[cacheKey]!.first;
-            Logger.info('Using cached text for $fileName: ${fullText.length} chars');
+            Logger.info(
+              'Using cached text for $fileName: ${fullText.length} chars',
+            );
           } else {
             try {
               final teacherId = data['teacherId'] as String?;
@@ -164,7 +174,9 @@ class MaterialsRAGService {
               fullText = cleaned;
               // Guardar texto completo no cache com key versionada
               _chunksCache[cacheKey] = [fullText];
-              Logger.info('PDF "$fileName" -> ${fullText.length} chars extracted');
+              Logger.info(
+                'PDF "$fileName" -> ${fullText.length} chars extracted',
+              );
             } catch (e) {
               Logger.error('Error extracting text from $fileName: $e');
               continue;
@@ -176,9 +188,15 @@ class MaterialsRAGService {
           final String context;
           if (fullText.length <= 10000) {
             context = fullText;
-            Logger.info('Small PDF — sending full text (${fullText.length} chars)');
+            Logger.info(
+              'Small PDF — sending full text (${fullText.length} chars)',
+            );
           } else {
-            final windows = _extractKeywordWindows(fullText, userQuery, _maxRelevantChunks);
+            final windows = _extractKeywordWindows(
+              fullText,
+              userQuery,
+              _maxRelevantChunks,
+            );
             context = windows.join('\n\n---\n\n');
             Logger.info('Large PDF — keyword windows: ${windows.length}');
           }
@@ -205,7 +223,11 @@ class MaterialsRAGService {
   /// Método legacy - mantido para compatibilidade mas usa chunk retrieval
   @Deprecated('Use getRelevantChunks with userQuery instead')
   static Future<String> getMaterialsContext({int maxMaterials = 5}) async {
-    return getRelevantChunks(userQuery: '', maxMaterials: maxMaterials, maxChunks: 3);
+    return getRelevantChunks(
+      userQuery: '',
+      maxMaterials: maxMaterials,
+      maxChunks: 3,
+    );
   }
 
   /// Get teacher IDs from student's enrolled classes
@@ -273,7 +295,10 @@ class MaterialsRAGService {
 
   /// Extrair texto real do PDF usando Firebase Storage SDK + syncfusion_flutter_pdf
   /// Usa getData() para descarregar o ficheiro completo (sem truncar a meio do stream)
-  static Future<String> _extractFullText(String fileName, String teacherId) async {
+  static Future<String> _extractFullText(
+    String fileName,
+    String teacherId,
+  ) async {
     PdfDocument? document;
     try {
       final ref = _storage
@@ -306,12 +331,16 @@ class MaterialsRAGService {
       for (int i = startPage; i < totalPages; i++) {
         if (buffer.length >= _maxExtractedChars) break;
         try {
-          final pageText = extractor.extractText(startPageIndex: i, endPageIndex: i).trim();
+          final pageText = extractor
+              .extractText(startPageIndex: i, endPageIndex: i)
+              .trim();
           if (pageText.length < 80) continue;
           final lowerText = pageText.toLowerCase();
           final pipeCount = '|'.allMatches(pageText).length;
-          final isStructurePage = pipeCount > 3 ||
+          final isStructurePage =
-              (lowerText.contains('table of contents') && pageText.length < 800) ||
+              pipeCount > 3 ||
+              (lowerText.contains('table of contents') &&
+                  pageText.length < 800) ||
               (lowerText.contains('copyright') && pageText.length < 400) ||
               (lowerText.contains('color insert') && pageText.length < 400) ||
               lowerText.contains('just light novels') ||
@@ -355,8 +384,12 @@ class MaterialsRAGService {
           ? fullText.substring(0, _maxExtractedChars)
           : fullText;
 
-      Logger.info('Extracted ${result.length} chars from $fileName (${document.pages.count} pages, ${form.fields.count} form fields)');
+      Logger.info(
-      Logger.info('Text preview: ${result.length > 200 ? result.substring(0, 200) : result}');
+        'Extracted ${result.length} chars from $fileName (${document.pages.count} pages, ${form.fields.count} form fields)',
+      );
+      Logger.info(
+        'Text preview: ${result.length > 200 ? result.substring(0, 200) : result}',
+      );
       return result.trim();
     } catch (e) {
       Logger.error('Error extracting text from $fileName: $e');
@@ -381,10 +414,9 @@ class MaterialsRAGService {
 
     // Extrair keywords: palavras com >3 chars + nomes próprios (palavras com maiúscula, >2 chars)
     // Os nomes próprios são invariantes entre línguas (ex: "Claire", "Rae", "François")
-    final properNouns = RegExp(r'\b[A-ZÁÉÍÓÚÀÂÊÔÃÕÇ][a-záéíóúàâêôãõç]{2,}\b')
+    final properNouns = RegExp(
-        .allMatches(userQuery)
+      r'\b[A-ZÁÉÍÓÚÀÂÊÔÃÕÇ][a-záéíóúàâêôãõç]{2,}\b',
-        .map((m) => m.group(0)!.toLowerCase())
+    ).allMatches(userQuery).map((m) => m.group(0)!.toLowerCase()).toSet();
-        .toSet();
     final generalKeywords = userQuery
         .toLowerCase()
         .split(RegExp(r'[^\w]'))
@@ -428,7 +460,9 @@ class MaterialsRAGService {
       lastEnd = end;
     }
 
-    Logger.info('Keyword windows found: ${windows.length} for query "$userQuery"');
+    Logger.info(
+      'Keyword windows found: ${windows.length} for query "$userQuery"',
+    );
     return windows;
   }
 
@@ -516,7 +550,9 @@ class MaterialsRAGService {
     // Ordenar por score decrescente
     scoredChunks.sort((a, b) => b.value.compareTo(a.value));
 
-    Logger.info('Top chunk scores: ${scoredChunks.take(3).map((e) => e.value).toList()}');
+    Logger.info(
+      'Top chunk scores: ${scoredChunks.take(3).map((e) => e.value).toList()}',
+    );
 
     // Retornar os N chunks mais relevantes
     return scoredChunks.take(maxChunks).map((e) => e.key).toList();

lib/features/dashboard/presentation/widgets/quick_access_widget.dart

@@ -24,7 +24,6 @@ class QuickAccessWidget extends StatelessWidget {
       _buildTutorIACard(context),
       _buildQuizCard(context),
       _buildAchievementsCard(context),
-      _buildQuizManagementCard(context),
     ];
 
     return Column(
@@ -70,8 +69,6 @@ class QuickAccessWidget extends StatelessWidget {
                     SizedBox(width: _scrollCardWidth, child: cards[1]),
                     const SizedBox(width: 12),
                     SizedBox(width: _scrollCardWidth, child: cards[2]),
-                    const SizedBox(width: 12),
-                    SizedBox(width: _scrollCardWidth, child: cards[3]),
                   ],
                 ),
               ),
@@ -166,32 +163,6 @@ class QuickAccessWidget extends StatelessWidget {
     );
   }
 
-  Widget _buildQuizManagementCard(BuildContext context) {
-    final cs = Theme.of(context).colorScheme;
-    return ClipRRect(
-      borderRadius: BorderRadius.circular(16),
-      child:
-          DashboardActionCardSurface(
-                title: 'Gerenciar Quizzes',
-                subtitle: 'Ver histórico ou eliminar',
-                icon: Icons.manage_history,
-                minHeight: _cardMinHeight,
-                titleFontSize: _titleFontSize,
-                subtitleFontSize: _subtitleFontSize,
-                iconSize: _iconSize,
-                padding: _cardPadding,
-                iconColor: cs.tertiary,
-                onTap: () => context.go('/quiz-management'),
-              )
-              .animate()
-              .fadeIn(
-                duration: const Duration(milliseconds: 300),
-                curve: Curves.easeOut,
-              )
-              .then(delay: const Duration(milliseconds: 250)),
-    );
-  }
-
   Widget _buildJoinClassCard(BuildContext context) {
     return DashboardActionCard(
           title: 'Entrar numa Disciplina',
@@ -245,15 +216,6 @@ class QuickAccessWidget extends StatelessWidget {
           context.go('/student/achievements');
         },
       ),
-      _QuickAccessItem(
-        title: 'Gerenciar Quizzes',
-        subtitle: 'Ver histórico ou eliminar',
-        icon: Icons.manage_history,
-        onTap: () {
-          Navigator.pop(context);
-          context.go('/quiz-management');
-        },
-      ),
       _QuickAccessItem(
         title: 'Entrar numa Disciplina',
         subtitle: 'Junta-te a uma disciplina com o código',

lib/features/quiz/presentation/pages/quiz_management_page.dart

@@ -20,6 +20,10 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
   bool _loading = true;
   String _userRole = '';
 
+  // Disciplina seleccionada (null = vista de disciplinas)
+  String? _selectedDisciplineId;
+  Map<String, String> _classNames = {}; // classId → name
+
   @override
   void initState() {
     super.initState();
@@ -116,9 +120,7 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
       }
 
       final snapshot = await query.get();
-
+      final quizzes = snapshot.docs
-      setState(() {
-        _quizHistory = snapshot.docs
           .map((doc) {
             final data = Map<String, dynamic>.from(doc.data() as Map);
             data['id'] = doc.id;
@@ -126,6 +128,29 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
           })
           .cast<Map<String, dynamic>>()
           .toList();
+
+      // Obter nomes das disciplinas
+      final classIdSet = <String>{};
+      for (final q in quizzes) {
+        final ids = (q['classIds'] as List?)?.cast<String>() ?? [];
+        classIdSet.addAll(ids);
+      }
+      final classNamesMap = <String, String>{};
+      if (classIdSet.isNotEmpty) {
+        final docs = await Future.wait(
+          classIdSet.map(
+            (id) =>
+                FirebaseFirestore.instance.collection('classes').doc(id).get(),
+          ),
+        );
+        for (final doc in docs.where((d) => d.exists)) {
+          classNamesMap[doc.id] = doc.data()?['name'] as String? ?? doc.id;
+        }
+      }
+
+      setState(() {
+        _quizHistory = quizzes;
+        _classNames = classNamesMap;
         _loading = false;
       });
     } catch (e) {
@@ -277,11 +302,32 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
     return result ?? false;
   }
 
+  Map<String, List<Map<String, dynamic>>> _groupByDiscipline() {
+    final Map<String, List<Map<String, dynamic>>> groups = {};
+    for (final quiz in _quizHistory) {
+      final quizClassIds = (quiz['classIds'] as List?)?.cast<String>() ?? [];
+      String? groupId = quizClassIds.cast<String?>().firstWhere(
+        (cid) => cid != null && _classNames.containsKey(cid),
+        orElse: () => null,
+      );
+      groupId ??= quizClassIds.isNotEmpty ? quizClassIds.first : '__geral__';
+      groups.putIfAbsent(groupId, () => []).add(quiz);
+    }
+    return groups;
+  }
+
   @override
   Widget build(BuildContext context) {
     final cs = Theme.of(context).colorScheme;
 
-    return Scaffold(
+    return PopScope(
+      canPop: _selectedDisciplineId == null,
+      onPopInvokedWithResult: (didPop, _) {
+        if (!didPop && _selectedDisciplineId != null) {
+          setState(() => _selectedDisciplineId = null);
+        }
+      },
+      child: Scaffold(
         backgroundColor: cs.surface,
         appBar: AppBar(
           title: Text(
@@ -293,6 +339,10 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
           leading: IconButton(
             icon: const Icon(Icons.arrow_back),
             onPressed: () {
+              if (_userRole == 'teacher' && _selectedDisciplineId != null) {
+                setState(() => _selectedDisciplineId = null);
+                return;
+              }
               if (Navigator.of(context).canPop()) {
                 Navigator.of(context).pop();
               } else {
@@ -317,6 +367,8 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
               ? const Center(child: CircularProgressIndicator())
               : _quizHistory.isEmpty
               ? _buildEmptyState()
+              : _userRole == 'teacher'
+              ? _buildTeacherBody(cs)
               : ListView.builder(
                   padding: const EdgeInsets.all(16),
                   itemCount: _quizHistory.length,
@@ -329,6 +381,140 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
                   },
                 ),
         ),
+      ),
+    );
+  }
+
+  Widget _buildTeacherBody(ColorScheme cs) {
+    final groups = _groupByDiscipline();
+
+    // Vista de quizzes de uma disciplina
+    if (_selectedDisciplineId != null) {
+      final quizzes = groups[_selectedDisciplineId] ?? [];
+      final disciplineName =
+          _classNames[_selectedDisciplineId] ??
+          (_selectedDisciplineId == '__geral__'
+              ? 'Geral'
+              : _selectedDisciplineId!);
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Padding(
+            padding: const EdgeInsets.fromLTRB(8, 8, 16, 0),
+            child: Row(
+              children: [
+                IconButton(
+                  icon: Icon(Icons.arrow_back, color: cs.onSurface),
+                  onPressed: () => setState(() => _selectedDisciplineId = null),
+                ),
+                const SizedBox(width: 4),
+                Expanded(
+                  child: Text(
+                    disciplineName,
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                    style: TextStyle(
+                      fontSize: 16,
+                      fontWeight: FontWeight.bold,
+                      color: cs.onSurface,
+                    ),
+                  ),
+                ),
+                Text(
+                  '${quizzes.length} quiz${quizzes.length != 1 ? 'zes' : ''}',
+                  style: TextStyle(fontSize: 13, color: cs.onSurfaceVariant),
+                ),
+              ],
+            ),
+          ),
+          const Divider(height: 1),
+          Expanded(
+            child: ListView.builder(
+              padding: const EdgeInsets.all(16),
+              itemCount: quizzes.length,
+              itemBuilder: (context, index) {
+                final quiz = quizzes[index];
+                return _buildQuizCard(quiz)
+                    .animate()
+                    .slideX(duration: const Duration(milliseconds: 300))
+                    .then(delay: Duration(milliseconds: index * 50));
+              },
+            ),
+          ),
+        ],
+      );
+    }
+
+    // Vista de disciplinas
+    final disciplineIds = groups.keys.toList();
+    return ListView.separated(
+      padding: const EdgeInsets.all(16),
+      itemCount: disciplineIds.length,
+      separatorBuilder: (_, __) => const SizedBox(height: 12),
+      itemBuilder: (context, i) {
+        final dId = disciplineIds[i];
+        final dName = _classNames[dId] ?? (dId == '__geral__' ? 'Geral' : dId);
+        final count = groups[dId]!.length;
+        return InkWell(
+          borderRadius: BorderRadius.circular(16),
+          onTap: () => setState(() => _selectedDisciplineId = dId),
+          child: Container(
+            padding: const EdgeInsets.all(20),
+            decoration: BoxDecoration(
+              color: cs.surface,
+              borderRadius: BorderRadius.circular(16),
+              border: Border.all(color: cs.outline.withValues(alpha: 0.15)),
+              boxShadow: [
+                BoxShadow(
+                  color: cs.shadow.withValues(alpha: 0.05),
+                  blurRadius: 8,
+                  offset: const Offset(0, 2),
+                ),
+              ],
+            ),
+            child: Row(
+              children: [
+                Container(
+                  width: 48,
+                  height: 48,
+                  decoration: BoxDecoration(
+                    color: cs.primary.withValues(alpha: 0.1),
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                  child: Icon(Icons.school, color: cs.primary, size: 26),
+                ),
+                const SizedBox(width: 16),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        dName,
+                        maxLines: 2,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          fontSize: 15,
+                          fontWeight: FontWeight.bold,
+                          color: cs.onSurface,
+                        ),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        '$count quiz${count != 1 ? 'zes' : ''} criado${count != 1 ? 's' : ''}',
+                        style: TextStyle(
+                          fontSize: 13,
+                          color: cs.onSurfaceVariant,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                Icon(Icons.chevron_right, color: cs.onSurfaceVariant),
+              ],
+            ),
+          ),
+        );
+      },
     );
   }
 
@@ -443,7 +629,9 @@ class _QuizManagementPageState extends State<QuizManagementPage> {
               ),
             ],
           ),
-          if (_userRole == 'teacher' && quiz['classIds'] != null) ...[
+          if (_userRole == 'teacher' &&
+              quiz['classIds'] != null &&
+              _selectedDisciplineId == null) ...[
             const SizedBox(height: 8),
             Wrap(
               spacing: 4,

lib/features/quiz/presentation/pages/teacher_quiz_page.dart

@@ -67,6 +67,9 @@ class _TeacherQuizPageState extends State<TeacherQuizPage>
   bool _loadingHistory = true;
   String? _generatingForId;
 
+  // Disciplina seleccionada no histórico (null = vista de disciplinas)
+  String? _selectedHistoryDisciplineId;
+
   @override
   void initState() {
     super.initState();
@@ -256,7 +259,13 @@ class _TeacherQuizPageState extends State<TeacherQuizPage>
         elevation: 0,
         leading: IconButton(
           icon: const Icon(Icons.arrow_back),
-          onPressed: () => context.go('/teacher-dashboard'),
+          onPressed: () {
+            if (_selectedHistoryDisciplineId != null) {
+              setState(() => _selectedHistoryDisciplineId = null);
+            } else {
+              context.go('/teacher-dashboard');
+            }
+          },
         ),
         bottom: TabBar(
           controller: _tabController,
@@ -330,37 +339,26 @@ class _TeacherQuizPageState extends State<TeacherQuizPage>
     );
   }
 
-  Widget _buildHistoryTab(ColorScheme cs) {
+  Map<String, String> get _classNamesMap {
-    if (_loadingHistory)
+    return {for (final c in _teacherClasses) c['id']!: c['name'] ?? c['id']!};
-      return const Center(child: CircularProgressIndicator());
-    if (_history.isEmpty) {
-      return Center(
-        child: Padding(
-          padding: const EdgeInsets.all(32),
-          child: Column(
-            mainAxisSize: MainAxisSize.min,
-            children: [
-              Icon(
-                Icons.history,
-                size: 64,
-                color: cs.onSurfaceVariant.withValues(alpha: 0.4),
-              ),
-              const SizedBox(height: 16),
-              Text(
-                'Ainda não criaste nenhum quiz.',
-                style: TextStyle(color: cs.onSurfaceVariant, fontSize: 16),
-              ),
-            ],
-          ),
-        ),
-      );
   }
-    return ListView.separated(
+
-      padding: const EdgeInsets.all(16),
+  Map<String, List<Map<String, dynamic>>> _groupHistoryByDiscipline() {
-      itemCount: _history.length,
+    final classNames = _classNamesMap;
-      separatorBuilder: (_, __) => const SizedBox(height: 12),
+    final Map<String, List<Map<String, dynamic>>> groups = {};
-      itemBuilder: (context, i) {
+    for (final quiz in _history) {
-        final item = _history[i];
+      final quizClassIds = (quiz['classIds'] as List?)?.cast<String>() ?? [];
+      String? groupId = quizClassIds.cast<String?>().firstWhere(
+        (cid) => cid != null && classNames.containsKey(cid),
+        orElse: () => null,
+      );
+      groupId ??= quizClassIds.isNotEmpty ? quizClassIds.first : '__geral__';
+      groups.putIfAbsent(groupId, () => []).add(quiz);
+    }
+    return groups;
+  }
+
+  Widget _buildHistoryQuizTile(Map<String, dynamic> item, ColorScheme cs) {
     final name = (item['materialName'] as String? ?? 'Material')
         .replaceAll('.pdf', '')
         .replaceAll('_', ' ');
@@ -385,10 +383,7 @@ class _TeacherQuizPageState extends State<TeacherQuizPage>
         ],
       ),
       child: ListTile(
-            contentPadding: const EdgeInsets.symmetric(
+        contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
-              horizontal: 16,
-              vertical: 8,
-            ),
         leading: Container(
           width: 44,
           height: 44,
@@ -418,6 +413,160 @@ class _TeacherQuizPageState extends State<TeacherQuizPage>
         onTap: () => _showResultsPopup(item),
       ),
     );
+  }
+
+  Widget _buildHistoryTab(ColorScheme cs) {
+    if (_loadingHistory)
+      return const Center(child: CircularProgressIndicator());
+    if (_history.isEmpty) {
+      return Center(
+        child: Padding(
+          padding: const EdgeInsets.all(32),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(
+                Icons.history,
+                size: 64,
+                color: cs.onSurfaceVariant.withValues(alpha: 0.4),
+              ),
+              const SizedBox(height: 16),
+              Text(
+                'Ainda não criaste nenhum quiz.',
+                style: TextStyle(color: cs.onSurfaceVariant, fontSize: 16),
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    final groups = _groupHistoryByDiscipline();
+    final classNames = _classNamesMap;
+
+    // Vista de quizzes de uma disciplina
+    if (_selectedHistoryDisciplineId != null) {
+      final quizzes = groups[_selectedHistoryDisciplineId] ?? [];
+      final disciplineName =
+          classNames[_selectedHistoryDisciplineId] ??
+          (_selectedHistoryDisciplineId == '__geral__'
+              ? 'Geral'
+              : _selectedHistoryDisciplineId!);
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Padding(
+            padding: const EdgeInsets.fromLTRB(8, 8, 16, 0),
+            child: Row(
+              children: [
+                IconButton(
+                  icon: Icon(Icons.arrow_back, color: cs.onSurface),
+                  onPressed: () =>
+                      setState(() => _selectedHistoryDisciplineId = null),
+                ),
+                const SizedBox(width: 4),
+                Expanded(
+                  child: Text(
+                    disciplineName,
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                    style: TextStyle(
+                      fontSize: 16,
+                      fontWeight: FontWeight.bold,
+                      color: cs.onSurface,
+                    ),
+                  ),
+                ),
+                Text(
+                  '${quizzes.length} quiz${quizzes.length != 1 ? 'zes' : ''}',
+                  style: TextStyle(fontSize: 13, color: cs.onSurfaceVariant),
+                ),
+              ],
+            ),
+          ),
+          const Divider(height: 1),
+          Expanded(
+            child: ListView.separated(
+              padding: const EdgeInsets.all(16),
+              itemCount: quizzes.length,
+              separatorBuilder: (_, __) => const SizedBox(height: 12),
+              itemBuilder: (context, i) =>
+                  _buildHistoryQuizTile(quizzes[i], cs),
+            ),
+          ),
+        ],
+      );
+    }
+
+    // Vista de disciplinas
+    final disciplineIds = groups.keys.toList();
+    return ListView.separated(
+      padding: const EdgeInsets.all(16),
+      itemCount: disciplineIds.length,
+      separatorBuilder: (_, __) => const SizedBox(height: 12),
+      itemBuilder: (context, i) {
+        final dId = disciplineIds[i];
+        final dName = classNames[dId] ?? (dId == '__geral__' ? 'Geral' : dId);
+        final count = groups[dId]!.length;
+        return InkWell(
+          borderRadius: BorderRadius.circular(16),
+          onTap: () => setState(() => _selectedHistoryDisciplineId = dId),
+          child: Container(
+            padding: const EdgeInsets.all(20),
+            decoration: BoxDecoration(
+              color: cs.surface,
+              borderRadius: BorderRadius.circular(16),
+              border: Border.all(color: cs.outline.withValues(alpha: 0.15)),
+              boxShadow: [
+                BoxShadow(
+                  color: cs.shadow.withValues(alpha: 0.05),
+                  blurRadius: 8,
+                  offset: const Offset(0, 2),
+                ),
+              ],
+            ),
+            child: Row(
+              children: [
+                Container(
+                  width: 48,
+                  height: 48,
+                  decoration: BoxDecoration(
+                    color: cs.primary.withValues(alpha: 0.1),
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                  child: Icon(Icons.school, color: cs.primary, size: 26),
+                ),
+                const SizedBox(width: 16),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        dName,
+                        maxLines: 2,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          fontSize: 15,
+                          fontWeight: FontWeight.bold,
+                          color: cs.onSurface,
+                        ),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        '$count quiz${count != 1 ? 'zes' : ''} criado${count != 1 ? 's' : ''}',
+                        style: TextStyle(
+                          fontSize: 13,
+                          color: cs.onSurfaceVariant,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                Icon(Icons.chevron_right, color: cs.onSurfaceVariant),
+              ],
+            ),
+          ),
+        );
       },
     );
   }