lib/main.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:hirameki_srs/src/services/vocab_deck_repository.dart';
 import 'package:provider/provider.dart';
 import 'package:flutter_dotenv/flutter_dotenv.dart';
 import 'src/services/deck_repository.dart';
@@ -14,8 +15,11 @@ void main() async {
   }
 
   runApp(
-    Provider<DeckRepository>(
+    MultiProvider(
-      create: (_) => DeckRepository(),
+      providers: [
+        Provider<DeckRepository>(create: (_) => DeckRepository()),
+        Provider<VocabDeckRepository>(create: (_) => VocabDeckRepository()),
+      ],
       child: const WkApp(),
     ),
   );

lib/src/models/custom_kanji_item.dart

@@ -4,28 +4,44 @@ class CustomKanjiItem {
   final String meaning;
   final String? kanji;
   final bool useInterval;
-  int srsLevel;
+  SrsData srsData;
-  DateTime? nextReview;
 
   CustomKanjiItem({
     required this.characters,
     required this.meaning,
     this.kanji,
     this.useInterval = false,
-    this.srsLevel = 0,
+    SrsData? srsData,
-    this.nextReview,
+  }) : srsData = srsData ?? SrsData();
-  });
 
   factory CustomKanjiItem.fromJson(Map<String, dynamic> json) {
+    SrsData srsData;
+    if (json['srsData'] != null) {
+      srsData = SrsData.fromJson(json['srsData']);
+      if (json['nextReview'] != null) {
+        final oldNextReview = DateTime.parse(json['nextReview'] as String);
+        srsData.japaneseToEnglishNextReview ??= oldNextReview;
+        srsData.englishToJapaneseNextReview ??= oldNextReview;
+        srsData.listeningComprehensionNextReview ??= oldNextReview;
+      }
+    } else {
+      DateTime? nextReview = json['nextReview'] != null ? DateTime.parse(json['nextReview'] as String) : null;
+      srsData = SrsData(
+        japaneseToEnglish: json['srsLevel'] as int? ?? 0,
+        japaneseToEnglishNextReview: nextReview,
+        englishToJapanese: json['srsLevel'] as int? ?? 0,
+        englishToJapaneseNextReview: nextReview,
+        listeningComprehension: json['srsLevel'] as int? ?? 0,
+        listeningComprehensionNextReview: nextReview,
+      );
+    }
+
     return CustomKanjiItem(
       characters: json['characters'] as String,
       meaning: json['meaning'] as String,
       kanji: json['kanji'] as String?,
       useInterval: json['useInterval'] as bool? ?? false,
-      srsLevel: json['srsLevel'] as int? ?? 0,
+      srsData: srsData,
-      nextReview: json['nextReview'] != null
-          ? DateTime.parse(json['nextReview'] as String)
-          : null,
     );
   }
 
@@ -35,8 +51,47 @@ class CustomKanjiItem {
       'meaning': meaning,
       'kanji': kanji,
       'useInterval': useInterval,
-      'srsLevel': srsLevel,
+      'srsData': srsData.toJson(),
-      'nextReview': nextReview?.toIso8601String(),
+    };
+  }
+}
+
+class SrsData {
+  int japaneseToEnglish;
+  DateTime? japaneseToEnglishNextReview;
+  int englishToJapanese;
+  DateTime? englishToJapaneseNextReview;
+  int listeningComprehension;
+  DateTime? listeningComprehensionNextReview;
+
+  SrsData({
+    this.japaneseToEnglish = 0,
+    this.japaneseToEnglishNextReview,
+    this.englishToJapanese = 0,
+    this.englishToJapaneseNextReview,
+    this.listeningComprehension = 0,
+    this.listeningComprehensionNextReview,
+  });
+
+  factory SrsData.fromJson(Map<String, dynamic> json) {
+    return SrsData(
+      japaneseToEnglish: json['japaneseToEnglish'] as int? ?? 0,
+      japaneseToEnglishNextReview: json['japaneseToEnglishNextReview'] != null ? DateTime.parse(json['japaneseToEnglishNextReview'] as String) : null,
+      englishToJapanese: json['englishToJapanese'] as int? ?? 0,
+      englishToJapaneseNextReview: json['englishToJapaneseNextReview'] != null ? DateTime.parse(json['englishToJapaneseNextReview'] as String) : null,
+      listeningComprehension: json['listeningComprehension'] as int? ?? 0,
+      listeningComprehensionNextReview: json['listeningComprehensionNextReview'] != null ? DateTime.parse(json['listeningComprehensionNextReview'] as String) : null,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'japaneseToEnglish': japaneseToEnglish,
+      'japaneseToEnglishNextReview': japaneseToEnglishNextReview?.toIso8601String(),
+      'englishToJapanese': englishToJapanese,
+      'englishToJapaneseNextReview': englishToJapaneseNextReview?.toIso8601String(),
+      'listeningComprehension': listeningComprehension,
+      'listeningComprehensionNextReview': listeningComprehensionNextReview?.toIso8601String(),
     };
   }
 }

lib/src/screens/add_card_screen.dart

@@ -50,12 +50,20 @@ class _AddCardScreenState extends State<AddCardScreen> {
 
   void _saveCard() {
     if (_formKey.currentState!.validate()) {
+      final srsData = _useInterval
+          ? SrsData(
+              japaneseToEnglishNextReview: DateTime.now(),
+              englishToJapaneseNextReview: DateTime.now(),
+              listeningComprehensionNextReview: DateTime.now(),
+            )
+          : SrsData();
+
       final newItem = CustomKanjiItem(
         characters: _japaneseController.text,
         meaning: _englishController.text,
-        kanji: _kanjiController.text.isNotEmpty ? _kanjiController.text : null,
+        kanji: _kanjiController.text.trim().isNotEmpty ? _kanjiController.text.trim() : null,
         useInterval: _useInterval,
-        nextReview: _useInterval ? DateTime.now() : null,
+        srsData: srsData,
       );
       _deckRepository.addCard(newItem);
       Navigator.of(context).pop();

lib/src/screens/browse_screen.dart

@@ -1,11 +1,15 @@
+import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:http/http.dart' as http;
 import '../models/kanji_item.dart';
 import '../services/deck_repository.dart';
+import 'package:hirameki_srs/src/services/vocab_deck_repository.dart';
 import '../services/custom_deck_repository.dart';
 import '../models/custom_kanji_item.dart';
 import 'settings_screen.dart';
 import 'custom_card_details_screen.dart';
+import 'add_card_screen.dart';
 
 class BrowseScreen extends StatefulWidget {
   const BrowseScreen({super.key});
@@ -222,8 +226,7 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
         final item = items[index];
         return GestureDetector(
           onTap: () => _showReadingsDialog(item),
-          child:
+          child: _buildSrsItemCard(item),
-              _buildSrsItemCard(item.characters, item.srsItems.values.toList()),
         );
       },
       padding: const EdgeInsets.all(8),
@@ -241,14 +244,28 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
   }
 
   Widget _buildVocabListTile(VocabularyItem item) {
-    final avgSrsStage = item.srsItems.isNotEmpty
+    final requiredModes = <String>[
-        ? item.srsItems.values
+      VocabQuizMode.vocabToEnglish.toString(),
-                .map((s) => s.srsStage)
+      VocabQuizMode.englishToVocab.toString(),
-                .reduce((a, b) => a + b) /
+      VocabQuizMode.audioToEnglish.toString(),
-            item.srsItems.length
+    ];
-        : 0.0;
 
-    return Card(
+    int minSrsStage = 9;
+
+    for (final mode in requiredModes) {
+      final srsItem = item.srsItems[mode];
+      if (srsItem == null) {
+        minSrsStage = 0;
+        break;
+      }
+      if (srsItem.srsStage < minSrsStage) {
+        minSrsStage = srsItem.srsStage;
+      }
+    }
+
+    return GestureDetector(
+      onTap: () => _showVocabDetailsDialog(context, item),
+      child: Card(
         color: const Color(0xFF1E1E1E),
         margin: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
         child: Padding(
@@ -273,21 +290,41 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
                       overflow: TextOverflow.ellipsis,
                     ),
                     const SizedBox(height: 8),
-                  _buildSrsIndicator(avgSrsStage.round()),
+                    _buildSrsIndicator(minSrsStage),
                   ],
                 ),
               ),
             ],
           ),
         ),
+      ),
     );
   }
 
-  Widget _buildSrsItemCard(String characters, List<dynamic> srsItems) {
+  Widget _buildSrsItemCard(KanjiItem item) {
-    final avgSrsStage = srsItems.isNotEmpty
+    final requiredModes = <String>[
-        ? srsItems.map((s) => s.srsStage).reduce((a, b) => a + b) /
+      QuizMode.kanjiToEnglish.toString(),
-            srsItems.length
+      QuizMode.englishToKanji.toString(),
-        : 0.0;
+    ];
+    if (item.onyomi.isNotEmpty) {
+      requiredModes.add('${QuizMode.reading}onyomi');
+    }
+    if (item.kunyomi.isNotEmpty) {
+      requiredModes.add('${QuizMode.reading}kunyomi');
+    }
+
+    int minSrsStage = 9;
+
+    for (final mode in requiredModes) {
+      final srsItem = item.srsItems[mode];
+      if (srsItem == null) {
+        minSrsStage = 0;
+        break;
+      }
+      if (srsItem.srsStage < minSrsStage) {
+        minSrsStage = srsItem.srsStage;
+      }
+    }
 
     return Card(
       color: const Color(0xFF1E1E1E),
@@ -297,12 +334,12 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Text(
-              characters,
+              item.characters,
               style: const TextStyle(fontSize: 32, color: Colors.white),
               textAlign: TextAlign.center,
             ),
             const SizedBox(height: 8),
-            _buildSrsIndicator(avgSrsStage.round()),
+            _buildSrsIndicator(minSrsStage),
           ],
         ),
       ),
@@ -339,6 +376,32 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
   }
 
   void _showReadingsDialog(KanjiItem kanji) {
+    final srsScores = <String, int>{
+      'JP -> EN': 0,
+      'EN -> JP': 0,
+      'Reading (onyomi)': 0,
+      'Reading (kunyomi)': 0,
+    };
+
+    for (final entry in kanji.srsItems.entries) {
+      final srsItem = entry.value;
+      switch (srsItem.quizMode) {
+        case QuizMode.kanjiToEnglish:
+          srsScores['JP -> EN'] = srsItem.srsStage;
+          break;
+        case QuizMode.englishToKanji:
+          srsScores['EN -> JP'] = srsItem.srsStage;
+          break;
+        case QuizMode.reading:
+          if (srsItem.readingType == 'onyomi') {
+            srsScores['Reading (onyomi)'] = srsItem.srsStage;
+          } else if (srsItem.readingType == 'kunyomi') {
+            srsScores['Reading (kunyomi)'] = srsItem.srsStage;
+          }
+          break;
+      }
+    }
+
     showDialog(
       context: context,
       builder: (context) {
@@ -348,7 +411,8 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
             'Details for ${kanji.characters}',
             style: const TextStyle(color: Colors.white),
           ),
-          content: Column(
+          content: SingleChildScrollView(
+            child: Column(
               mainAxisSize: MainAxisSize.min,
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
@@ -376,10 +440,23 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
                 if (kanji.onyomi.isEmpty && kanji.kunyomi.isEmpty)
                   const Text(
                     'No readings available.',
-                  style: const TextStyle(color: Colors.white),
+                    style: TextStyle(color: Colors.white),
                   ),
+                const SizedBox(height: 16),
+                const Divider(color: Colors.grey),
+                const SizedBox(height: 16),
+                const Text(
+                  'SRS Scores:',
+                  style: TextStyle(
+                      color: Colors.white, fontWeight: FontWeight.bold),
+                ),
+                ...srsScores.entries.map((entry) => Text(
+                      '  ${entry.key}: ${entry.value}',
+                      style: const TextStyle(color: Colors.white),
+                    )),
               ],
             ),
+          ),
           actions: [
             TextButton(
               onPressed: () => Navigator.of(context).pop(),
@@ -395,9 +472,11 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
   Future<void> _loadDecks() async {
     setState(() => _loading = true);
     try {
-      final repo = Provider.of<DeckRepository>(context, listen: false);
+      final kanjiRepo = Provider.of<DeckRepository>(context, listen: false);
-      await repo.loadApiKey();
+      final vocabRepo =
-      final apiKey = repo.apiKey;
+          Provider.of<VocabDeckRepository>(context, listen: false);
+      await kanjiRepo.loadApiKey();
+      final apiKey = kanjiRepo.apiKey;
 
       if (apiKey == null || apiKey.isEmpty) {
         setState(() {
@@ -407,16 +486,16 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
         return;
       }
 
-      var kanji = await repo.loadKanji();
+      var kanji = await kanjiRepo.loadKanji();
       if (kanji.isEmpty || kanji.every((k) => k.level == 0)) {
         setState(() => _status = 'Fetching kanji from WaniKani...');
-        kanji = await repo.fetchAndCacheFromWk(apiKey);
+        kanji = await kanjiRepo.fetchAndCacheFromWk(apiKey);
       }
 
-      var vocab = await repo.loadVocabulary();
+      var vocab = await vocabRepo.loadVocabulary();
       if (vocab.isEmpty || vocab.every((v) => v.level == 0)) {
         setState(() => _status = 'Fetching vocabulary from WaniKani...');
-        vocab = await repo.fetchAndCacheVocabularyFromWk(apiKey);
+        vocab = await vocabRepo.fetchAndCacheVocabularyFromWk(apiKey);
       }
 
       _kanjiDeck = kanji;
@@ -458,7 +537,8 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: _isSelectionMode ? _buildSelectionAppBar() : _buildDefaultAppBar(),
+      appBar:
+          _isSelectionMode ? _buildSelectionAppBar() : _buildDefaultAppBar(),
       backgroundColor: const Color(0xFF121212),
       body: Column(
         children: [
@@ -478,7 +558,8 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
                       _vocabByLevel,
                       _vocabSortedLevels,
                       _vocabPageController,
-                      (items) => _buildListView(items.cast<VocabularyItem>())),
+                      (items) =>
+                          _buildListView(items.cast<VocabularyItem>())),
                 ),
                 _buildCustomSrsTab(),
               ],
@@ -487,10 +568,23 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
           if (!_isSelectionMode)
             SafeArea(
               top: false,
-              child: _tabController.index < 2 ? _buildLevelSelector() : const SizedBox.shrink(),
+              child: _tabController.index < 2
+                  ? _buildLevelSelector()
+                  : const SizedBox.shrink(),
             ),
         ],
       ),
+      floatingActionButton: _tabController.index == 2
+          ? FloatingActionButton(
+              onPressed: () async {
+                await Navigator.of(context).push(
+                  MaterialPageRoute(builder: (_) => AddCardScreen()),
+                );
+                _loadCustomDeck();
+              },
+              child: const Icon(Icons.add),
+            )
+          : null,
     );
   }
 
@@ -560,7 +654,8 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
       context: context,
       builder: (context) => AlertDialog(
         title: const Text('Delete Selected'),
-        content: Text('Are you sure you want to delete ${_selectedItems.length} cards?'),
+        content:
+            Text('Are you sure you want to delete ${_selectedItems.length} cards?'),
         actions: [
           TextButton(
             onPressed: () => Navigator.of(context).pop(),
@@ -568,6 +663,7 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
           ),
           TextButton(
             onPressed: () async {
+              final navigator = Navigator.of(context);
               for (final item in _selectedItems) {
                 await _customDeckRepository.deleteCard(item);
               }
@@ -575,8 +671,9 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
                 _isSelectionMode = false;
                 _selectedItems.clear();
               });
-              _loadCustomDeck();
+              await _loadCustomDeck();
-              Navigator.of(context).pop();
+              if (!mounted) return;
+              navigator.pop();
             },
             child: const Text('Delete'),
           ),
@@ -591,7 +688,8 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
     }
     final bool targetState = _selectedItems.any((item) => !item.useInterval);
 
-    final selectedCharacters = _selectedItems.map((item) => item.characters).toSet();
+    final selectedCharacters =
+        _selectedItems.map((item) => item.characters).toSet();
 
     final List<CustomKanjiItem> updatedItems = [];
     for (final item in _selectedItems) {
@@ -600,8 +698,7 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
         meaning: item.meaning,
         kanji: item.kanji,
         useInterval: targetState,
-        srsLevel: item.srsLevel,
+        srsData: item.srsData,
-        nextReview: item.nextReview,
       );
       updatedItems.add(updatedItem);
     }
@@ -653,14 +750,16 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
                 }
               });
             } else {
-              Navigator.of(context).push(
+              Navigator.of(context)
+                  .push(
                     MaterialPageRoute(
                       builder: (_) => CustomCardDetailsScreen(
                         item: item,
                         repository: _customDeckRepository,
                       ),
                     ),
-              ).then((_) => _loadCustomDeck());
+                  )
+                  .then((_) => _loadCustomDeck());
             }
           },
           child: Card(
@@ -671,7 +770,7 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
               borderRadius: BorderRadius.circular(12.0),
             ),
             color: isSelected
-                ? Colors.blue.withOpacity(0.5)
+                ? Colors.blue.withAlpha((255 * 0.5).round())
                 : const Color(0xFF1E1E1E),
             child: Stack(
               children: [
@@ -683,20 +782,30 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
                       FittedBox(
                         fit: BoxFit.scaleDown,
                         child: Text(
-                          item.kanji ?? item.characters,
+                          item.kanji?.isNotEmpty == true
-                          style: const TextStyle(fontSize: 32, color: Colors.white),
+                              ? item.kanji!
+                              : item.characters,
+                          style:
+                              const TextStyle(fontSize: 32, color: Colors.white),
                           textAlign: TextAlign.center,
                         ),
                       ),
                       const SizedBox(height: 8),
                       Text(
                         item.meaning,
-                        style: const TextStyle(color: Colors.grey, fontSize: 16),
+                        style:
+                            const TextStyle(color: Colors.grey, fontSize: 16),
                         textAlign: TextAlign.center,
                         overflow: TextOverflow.ellipsis,
                       ),
                       const SizedBox(height: 8),
-                      _buildSrsIndicator(item.srsLevel),
+                      Builder(builder: (context) {
+                        final avgSrs = (item.srsData.japaneseToEnglish +
+                                item.srsData.englishToJapanese +
+                                item.srsData.listeningComprehension) /
+                            3;
+                        return _buildSrsIndicator(avgSrs.round());
+                      }),
                     ],
                   ),
                 ),
@@ -719,3 +828,171 @@ class _BrowseScreenState extends State<BrowseScreen> with SingleTickerProviderSt
     );
   }
 }
+
+class _VocabDetailsDialog extends StatefulWidget {
+  final VocabularyItem vocab;
+
+  const _VocabDetailsDialog({required this.vocab});
+
+  @override
+  State<_VocabDetailsDialog> createState() => _VocabDetailsDialogState();
+}
+
+class _VocabDetailsDialogState extends State<_VocabDetailsDialog> {
+  List<Widget> _exampleSentences = [const CircularProgressIndicator()];
+
+  @override
+  void initState() {
+    super.initState();
+    _fetchExampleSentences();
+  }
+
+  Future<void> _fetchExampleSentences() async {
+    try {
+      final uri = Uri.parse(
+          'https://jisho.org/api/v1/search/words?keyword=${Uri.encodeComponent(widget.vocab.characters)}');
+      final response = await http.get(uri);
+      if (response.statusCode == 200) {
+        final data = jsonDecode(utf8.decode(response.bodyBytes));
+        final sentences = <Widget>[];
+        if (data['data'] != null && (data['data'] as List).isNotEmpty) {
+          for (final result in data['data']) {
+            if (result['japanese'] != null &&
+                (result['japanese'] as List).isNotEmpty &&
+                result['senses'] != null &&
+                (result['senses'] as List).isNotEmpty) {
+              final japaneseWord = result['japanese'][0]['word'] ?? result['japanese'][0]['reading'];
+              final englishDefinition = result['senses'][0]['english_definitions'].join(', ');
+              if (japaneseWord != null && englishDefinition != null) {
+                sentences.add(
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(japaneseWord, style: const TextStyle(color: Colors.white)),
+                      Text(englishDefinition, style: const TextStyle(color: Colors.grey)),
+                      const SizedBox(height: 8),
+                    ],
+                  ),
+                );
+              }
+            }
+          }
+        }
+        if (sentences.isEmpty) {
+          sentences.add(const Text('No example sentences found.', style: TextStyle(color: Colors.white)));
+        }
+        if (mounted) {
+          setState(() {
+            _exampleSentences = sentences;
+          });
+        }
+      } else {
+        if (mounted) {
+          setState(() {
+            _exampleSentences = [
+              const Text('Failed to load example sentences.', style: TextStyle(color: Colors.red))
+            ];
+          });
+        }
+      }
+    } catch (e) {
+      if (mounted) {
+        setState(() {
+          _exampleSentences = [
+            const Text('Error loading example sentences.', style: TextStyle(color: Colors.red))
+          ];
+        });
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final srsScores = <String, int>{
+      'JP -> EN': 0,
+      'EN -> JP': 0,
+      'Audio': 0,
+    };
+
+    for (final entry in widget.vocab.srsItems.entries) {
+      final srsItem = entry.value;
+      switch (srsItem.quizMode) {
+        case VocabQuizMode.vocabToEnglish:
+          srsScores['JP -> EN'] = srsItem.srsStage;
+          break;
+        case VocabQuizMode.englishToVocab:
+          srsScores['EN -> JP'] = srsItem.srsStage;
+          break;
+        case VocabQuizMode.audioToEnglish:
+          srsScores['Audio'] = srsItem.srsStage;
+          break;
+      }
+    }
+
+    return SingleChildScrollView(
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            'Level: ${widget.vocab.level}',
+            style: const TextStyle(color: Colors.white),
+          ),
+          const SizedBox(height: 16),
+          if (widget.vocab.meanings.isNotEmpty)
+            Text(
+              'Meanings: ${widget.vocab.meanings.join(', ')}',
+              style: const TextStyle(color: Colors.white),
+            ),
+          const SizedBox(height: 16),
+          if (widget.vocab.readings.isNotEmpty)
+            Text(
+              'Readings: ${widget.vocab.readings.join(', ')}',
+              style: const TextStyle(color: Colors.white),
+            ),
+          const SizedBox(height: 16),
+          const Divider(color: Colors.grey),
+          const SizedBox(height: 16),
+          const Text(
+            'SRS Scores:',
+            style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
+          ),
+          ...srsScores.entries.map((entry) => Text(
+                '  ${entry.key}: ${entry.value}',
+                style: const TextStyle(color: Colors.white),
+              )),
+          const SizedBox(height: 16),
+          const Divider(color: Colors.grey),
+          const SizedBox(height: 16),
+          const Text(
+            'Example Sentences:',
+            style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
+          ),
+          ..._exampleSentences,
+        ],
+      ),
+    );
+  }
+}
+
+void _showVocabDetailsDialog(BuildContext context, VocabularyItem vocab) {
+  showDialog(
+    context: context,
+    builder: (context) {
+      return AlertDialog(
+        backgroundColor: const Color(0xFF1E1E1E),
+        title: Text(
+          'Details for ${vocab.characters}',
+          style: const TextStyle(color: Colors.white),
+        ),
+        content: _VocabDetailsDialog(vocab: vocab),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: const Text('Close', style: TextStyle(color: Colors.blueAccent)),
+          ),
+        ],
+      );
+    },
+  );
+}

lib/src/screens/custom_card_details_screen.dart

@@ -19,7 +19,6 @@ class _CustomCardDetailsScreenState extends State<CustomCardDetailsScreen> {
   late TextEditingController _englishController;
   late TextEditingController _kanjiController;
   late bool _useInterval;
-  late int _srsLevel;
 
   @override
   void initState() {
@@ -28,7 +27,6 @@ class _CustomCardDetailsScreenState extends State<CustomCardDetailsScreen> {
     _englishController = TextEditingController(text: widget.item.meaning);
     _kanjiController = TextEditingController(text: widget.item.kanji);
     _useInterval = widget.item.useInterval;
-    _srsLevel = widget.item.srsLevel;
   }
 
   @override
@@ -43,10 +41,9 @@ class _CustomCardDetailsScreenState extends State<CustomCardDetailsScreen> {
     final updatedItem = CustomKanjiItem(
       characters: _japaneseController.text,
       meaning: _englishController.text,
-      kanji: _kanjiController.text,
+      kanji: _kanjiController.text.trim().isNotEmpty ? _kanjiController.text.trim() : null,
       useInterval: _useInterval,
-      srsLevel: _srsLevel,
+      srsData: widget.item.srsData,
-      nextReview: widget.item.nextReview,
     );
     widget.repository.updateCard(updatedItem);
     Navigator.of(context).pop(true);
@@ -113,7 +110,11 @@ class _CustomCardDetailsScreenState extends State<CustomCardDetailsScreen> {
                 });
               },
             ),
-            Text('SRS Level: $_srsLevel'),
+            const SizedBox(height: 20),
+            const Text('SRS Levels', style: TextStyle(fontWeight: FontWeight.bold)),
+            Text('Jpn→Eng: ${widget.item.srsData.japaneseToEnglish} (Next review: ${widget.item.srsData.japaneseToEnglishNextReview?.toString() ?? 'N/A'})'),
+            Text('Eng→Jpn: ${widget.item.srsData.englishToJapanese} (Next review: ${widget.item.srsData.englishToJapaneseNextReview?.toString() ?? 'N/A'})'),
+            Text('Listening: ${widget.item.srsData.listeningComprehension} (Next review: ${widget.item.srsData.listeningComprehensionNextReview?.toString() ?? 'N/A'})'),
             const SizedBox(height: 20),
             ElevatedButton(
               onPressed: _saveChanges,

lib/src/screens/custom_quiz_screen.dart

@@ -3,6 +3,7 @@ import 'dart:math';
 import 'package:flutter_tts/flutter_tts.dart';
 import '../models/custom_kanji_item.dart';
 import '../widgets/options_grid.dart';
+import '../widgets/kanji_card.dart';
 
 enum CustomQuizMode { japaneseToEnglish, englishToJapanese, listeningComprehension }
 
@@ -11,6 +12,7 @@ class CustomQuizScreen extends StatefulWidget {
   final CustomQuizMode quizMode;
   final Function(CustomKanjiItem) onCardReviewed;
   final bool useKanji;
+  final bool isActive;
 
   const CustomQuizScreen({
     super.key,
@@ -18,6 +20,7 @@ class CustomQuizScreen extends StatefulWidget {
     required this.quizMode,
     required this.onCardReviewed,
     required this.useKanji,
+    required this.isActive,
   });
 
   @override
@@ -34,6 +37,7 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
   late FlutterTts _flutterTts;
   late AnimationController _shakeController;
   late Animation<double> _shakeAnimation;
+  final List<String> _incorrectlyAnsweredItems = [];
 
   @override
   void initState() {
@@ -59,6 +63,17 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
   @override
   void didUpdateWidget(CustomQuizScreen oldWidget) {
     super.didUpdateWidget(oldWidget);
+    if (widget.deck != oldWidget.deck && !widget.isActive) {
+      setState(() {
+        _shuffledDeck = widget.deck.toList()..shuffle();
+        _currentIndex = 0;
+        _answered = false;
+        _correct = null;
+        if (_shuffledDeck.isNotEmpty) {
+          _generateOptions();
+        }
+      });
+    }
     if (widget.useKanji != oldWidget.useKanji) {
       setState(() {
         _generateOptions();
@@ -67,7 +82,7 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
   }
 
   void playAudio() {
-    if (widget.quizMode == CustomQuizMode.listeningComprehension) {
+    if (widget.quizMode == CustomQuizMode.listeningComprehension && _currentIndex < _shuffledDeck.length) {
       _speak(_shuffledDeck[_currentIndex].characters);
     }
   }
@@ -75,9 +90,6 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
   void _initTts() async {
     _flutterTts = FlutterTts();
     await _flutterTts.setLanguage("ja-JP");
-    if (_shuffledDeck.isNotEmpty && widget.quizMode == CustomQuizMode.listeningComprehension) {
-      _speak(_shuffledDeck[_currentIndex].characters);
-    }
   }
 
   @override
@@ -108,7 +120,7 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
     _options.shuffle();
   }
 
-  void _checkAnswer(String answer) {
+  void _checkAnswer(String answer) async {
     final currentItem = _shuffledDeck[_currentIndex];
     final correctAnswer = (widget.quizMode == CustomQuizMode.englishToJapanese)
         ? (widget.useKanji && currentItem.kanji != null ? currentItem.kanji! : currentItem.characters)
@@ -116,43 +128,119 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
     final isCorrect = answer == correctAnswer;
 
     if (currentItem.useInterval) {
-      if (isCorrect) {
+      int currentSrsLevel;
-        currentItem.srsLevel++;
+      switch (widget.quizMode) {
-        final interval = pow(2, currentItem.srsLevel).toInt();
+        case CustomQuizMode.japaneseToEnglish:
-        currentItem.nextReview = DateTime.now().add(Duration(hours: interval));
+          currentSrsLevel = currentItem.srsData.japaneseToEnglish;
-      } else {
+          break;
-        currentItem.srsLevel = max(0, currentItem.srsLevel - 1);
+        case CustomQuizMode.englishToJapanese:
-        currentItem.nextReview = DateTime.now().add(const Duration(hours: 1));
+          currentSrsLevel = currentItem.srsData.englishToJapanese;
+          break;
+        case CustomQuizMode.listeningComprehension:
+          currentSrsLevel = currentItem.srsData.listeningComprehension;
+          break;
       }
+
+      if (isCorrect) {
+        if (_incorrectlyAnsweredItems.contains(currentItem.characters)) {
+          _incorrectlyAnsweredItems.remove(currentItem.characters);
+        } else {
+          currentSrsLevel++;
+        }
+        final interval = pow(2, currentSrsLevel).toInt();
+        final newNextReview = DateTime.now().add(Duration(hours: interval));
+        switch (widget.quizMode) {
+          case CustomQuizMode.japaneseToEnglish:
+            currentItem.srsData.japaneseToEnglishNextReview = newNextReview;
+            break;
+          case CustomQuizMode.englishToJapanese:
+            currentItem.srsData.englishToJapaneseNextReview = newNextReview;
+            break;
+          case CustomQuizMode.listeningComprehension:
+            currentItem.srsData.listeningComprehensionNextReview = newNextReview;
+            break;
+        }
+      } else {
+        if (!_incorrectlyAnsweredItems.contains(currentItem.characters)) {
+          _incorrectlyAnsweredItems.add(currentItem.characters);
+        }
+        currentSrsLevel = max(0, currentSrsLevel - 1);
+        final newNextReview = DateTime.now().add(const Duration(hours: 1));
+        switch (widget.quizMode) {
+          case CustomQuizMode.japaneseToEnglish:
+            currentItem.srsData.japaneseToEnglishNextReview = newNextReview;
+            break;
+          case CustomQuizMode.englishToJapanese:
+            currentItem.srsData.englishToJapaneseNextReview = newNextReview;
+            break;
+          case CustomQuizMode.listeningComprehension:
+            currentItem.srsData.listeningComprehensionNextReview = newNextReview;
+            break;
+        }
+      }
+
+      switch (widget.quizMode) {
+        case CustomQuizMode.japaneseToEnglish:
+          currentItem.srsData.japaneseToEnglish = currentSrsLevel;
+          break;
+        case CustomQuizMode.englishToJapanese:
+          currentItem.srsData.englishToJapanese = currentSrsLevel;
+          break;
+        case CustomQuizMode.listeningComprehension:
+          currentItem.srsData.listeningComprehension = currentSrsLevel;
+          break;
+      }
+
       widget.onCardReviewed(currentItem);
     }
 
-    setState(() {
+    // --- SnackBar Logic (new) ---
-      _answered = true;
+    final correctDisplay = (widget.quizMode == CustomQuizMode.englishToJapanese)
-      _correct = isCorrect;
+        ? (widget.useKanji && currentItem.kanji != null ? currentItem.kanji! : currentItem.characters)
-    });
+        : currentItem.meaning;
+
+    final snack = SnackBar(
+      content: Text(
+        isCorrect ? 'Correct!' : 'Wrong — correct: $correctDisplay',
+        style: TextStyle(
+          color: isCorrect ? Colors.greenAccent : Colors.redAccent,
+          fontWeight: FontWeight.bold,
+        ),
+      ),
+      backgroundColor: const Color(0xFF222222),
+      duration: const Duration(milliseconds: 900),
+    );
+    if (mounted) {
+      ScaffoldMessenger.of(context).showSnackBar(snack);
+    }
+    // --- End SnackBar Logic ---
 
     if (isCorrect) {
-      if (widget.quizMode == CustomQuizMode.japaneseToEnglish ||
+      if (widget.quizMode == CustomQuizMode.japaneseToEnglish) {
-          widget.quizMode == CustomQuizMode.listeningComprehension) {
+        await _speak(currentItem.characters);
-        _speak(currentItem.characters);
       }
+      await Future.delayed(const Duration(milliseconds: 500)); // Small delay after correct answer
     } else {
       _shakeController.forward(from: 0);
+      await Future.delayed(const Duration(milliseconds: 900)); // Delay for shake animation
     }
+
+    _nextQuestion();
   }
 
   void _nextQuestion() {
     setState(() {
-      _currentIndex = (_currentIndex + 1) % _shuffledDeck.length;
+      _currentIndex++;
       _answered = false;
       _correct = null;
+      if (_currentIndex < _shuffledDeck.length) {
         _generateOptions();
-    });
         if (widget.quizMode == CustomQuizMode.listeningComprehension) {
           _speak(_shuffledDeck[_currentIndex].characters);
         }
       }
+    });
+  }
 
   Future<void> _speak(String text) async {
     await _flutterTts.speak(text);
@@ -166,7 +254,7 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
 
   @override
   Widget build(BuildContext context) {
-    if (_shuffledDeck.isEmpty) {
+    if (_shuffledDeck.isEmpty || _currentIndex >= _shuffledDeck.length) {
       return const Center(
         child: Text('Review session complete!'),
       );
@@ -177,34 +265,49 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
         ? currentItem.meaning
         : (widget.useKanji && currentItem.kanji != null ? currentItem.kanji! : currentItem.characters);
 
-    return Center(
+    Widget promptWidget;
-      child: Column(
+    if (widget.quizMode == CustomQuizMode.listeningComprehension) {
-        mainAxisAlignment: MainAxisAlignment.center,
+      promptWidget = IconButton(
-        children: [
-          if (widget.quizMode == CustomQuizMode.listeningComprehension)
-            IconButton(
         icon: const Icon(Icons.volume_up, size: 64),
         onPressed: () => _speak(currentItem.characters),
-            )
+      );
-          else
+    } else {
-            GestureDetector(
+      promptWidget = GestureDetector(
         onTap: () => _speak(question),
         child: Text(
           question,
           style: const TextStyle(fontSize: 48),
           textAlign: TextAlign.center,
         ),
+      );
+    }
+
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        children: [
+          const SizedBox(height: 18),
+          Expanded(
+            flex: 3,
+            child: Center(
+              child: ConstrainedBox(
+                constraints: const BoxConstraints(
+                  minWidth: 0,
+                  maxWidth: 500,
+                  minHeight: 150,
                 ),
-          const SizedBox(height: 32),
+                child: KanjiCard(
-          if (_answered)
+                  characterWidget: promptWidget,
-            Text(
+                  subtitle: '',
-              _correct! ? 'Correct!' : 'Incorrect, try again!',
-              style: TextStyle(
-                fontSize: 24,
-                color: _correct! ? Colors.green : Colors.red,
                 ),
               ),
-          const SizedBox(height: 32),
+            ),
+          ),
+          const SizedBox(height: 12),
+          SafeArea(
+            top: false,
+            child: Column(
+              children: [
                 AnimatedBuilder(
                   animation: _shakeAnimation,
                   builder: (context, child) {
@@ -216,12 +319,13 @@ class CustomQuizScreenState extends State<CustomQuizScreen>
                   child: OptionsGrid(
                     options: _options,
                     onSelected: _onOptionSelected,
+                    correctAnswers: [],
+                    showResult: false,
+                    isDisabled: false,
                   ),
                 ),
-          if (_answered && _correct!)
+              ],
-            ElevatedButton(
+            ),
-              onPressed: _nextQuestion,
-              child: const Text('Next'),
           ),
         ],
       ),

lib/src/screens/custom_srs_screen.dart

@@ -1,7 +1,6 @@
 import 'package:flutter/material.dart';
 import '../models/custom_kanji_item.dart';
 import '../services/custom_deck_repository.dart';
-import 'add_card_screen.dart';
 import 'custom_quiz_screen.dart';
 
 class CustomSrsScreen extends StatefulWidget {
@@ -15,7 +14,6 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
   late TabController _tabController;
   final _deckRepository = CustomDeckRepository();
   List<CustomKanjiItem> _deck = [];
-  List<CustomKanjiItem> _reviewDeck = [];
   bool _useKanji = false;
   final _quizScreenKeys = [
     GlobalKey<CustomQuizScreenState>(),
@@ -45,17 +43,8 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
 
   Future<void> _loadDeck() async {
     final deck = await _deckRepository.getCustomDeck();
-    final now = DateTime.now();
-    final reviewDeck = deck.where((item) {
-      if (!item.useInterval) {
-        return true;
-      }
-      return item.nextReview == null || item.nextReview!.isBefore(now);
-    }).toList();
-
     setState(() {
       _deck = deck;
-      _reviewDeck = reviewDeck;
     });
   }
 
@@ -64,7 +53,6 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
     if (index != -1) {
       setState(() {
         _deck[index] = item;
-        _reviewDeck.removeWhere((element) => element.characters == item.characters);
       });
       await _deckRepository.saveDeck(_deck);
     }
@@ -72,6 +60,29 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
 
   @override
   Widget build(BuildContext context) {
+    final now = DateTime.now();
+    final jpnToEngReviewDeck = _deck.where((item) {
+      if (!item.useInterval) return true;
+      return item.srsData.japaneseToEnglishNextReview == null ||
+          item.srsData.japaneseToEnglishNextReview!.isBefore(now);
+    }).toList();
+
+    final engToJpnReviewDeck = _deck.where((item) {
+      if (!item.useInterval) return true;
+      return item.srsData.englishToJapaneseNextReview == null ||
+          item.srsData.englishToJapaneseNextReview!.isBefore(now);
+    }).toList();
+
+    final listeningReviewDeck = _deck.where((item) {
+      if (!item.useInterval) return true;
+      return item.srsData.listeningComprehensionNextReview == null ||
+          item.srsData.listeningComprehensionNextReview!.isBefore(now);
+    }).toList();
+
+    final allDecksEmpty = jpnToEngReviewDeck.isEmpty &&
+        engToJpnReviewDeck.isEmpty &&
+        listeningReviewDeck.isEmpty;
+
     return Scaffold(
       appBar: AppBar(
         title: const Text('Custom SRS'),
@@ -102,43 +113,37 @@ class _CustomSrsScreenState extends State<CustomSrsScreen> with SingleTickerProv
       ),
       body: _deck.isEmpty
           ? const Center(child: Text('Add cards to start quizzing!'))
-          : _reviewDeck.isEmpty
+          : allDecksEmpty
               ? const Center(child: Text('No cards due for review.'))
               : TabBarView(
               controller: _tabController,
               children: [
                 CustomQuizScreen(
                   key: _quizScreenKeys[0],
-                  deck: _reviewDeck,
+                  deck: jpnToEngReviewDeck,
                   quizMode: CustomQuizMode.japaneseToEnglish,
                   onCardReviewed: _updateCard,
                   useKanji: _useKanji,
+                  isActive: _tabController.index == 0,
                 ),
                 CustomQuizScreen(
                   key: _quizScreenKeys[1],
-                  deck: _reviewDeck,
+                  deck: engToJpnReviewDeck,
                   quizMode: CustomQuizMode.englishToJapanese,
                   onCardReviewed: _updateCard,
                   useKanji: _useKanji,
+                  isActive: _tabController.index == 1,
                 ),
                 CustomQuizScreen(
                   key: _quizScreenKeys[2],
-                  deck: _reviewDeck,
+                  deck: listeningReviewDeck,
                   quizMode: CustomQuizMode.listeningComprehension,
                   onCardReviewed: _updateCard,
                   useKanji: _useKanji,
+                  isActive: _tabController.index == 2,
                 ),
               ],
             ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: () async {
-          await Navigator.of(context).push(
-            MaterialPageRoute(builder: (_) => const AddCardScreen()),
-          );
-          _loadDeck();
-        },
-        child: const Icon(Icons.add),
-      ),
     );
   }
 }

lib/src/screens/home_screen.dart

@@ -18,6 +18,18 @@ class _ReadingInfo {
   _ReadingInfo(this.correctReadings, this.hint);
 }
 
+class _QuizState {
+  KanjiItem? current;
+  List<String> options = [];
+  List<String> correctAnswers = [];
+  String readingHint = '';
+  int score = 0;
+  int asked = 0;
+  Key key = UniqueKey();
+  String? selectedOption;
+  bool showResult = false;
+}
+
 class HomeScreen extends StatefulWidget {
   const HomeScreen({super.key, this.distractorGenerator});
 
@@ -31,17 +43,15 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
   late TabController _tabController;
   List<KanjiItem> _deck = [];
   bool _loading = false;
+  bool _isAnswering = false;
   String _status = 'Loading deck...';
   late final DistractorGenerator _dg;
   final Random _random = Random();
   final _audioPlayer = AudioPlayer();
 
-  KanjiItem? _current;
+  final _quizStates = [_QuizState(), _QuizState(), _QuizState()];
-  List<String> _options = [];
+  _QuizState get _currentQuizState => _quizStates[_tabController.index];
-  List<String> _correctAnswers = [];
+
-  String _readingHint = '';
-  int _score = 0;
-  int _asked = 0;
   bool _playCorrectSound = true;
   bool _apiKeyMissing = false;
 
@@ -50,8 +60,10 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     super.initState();
     _tabController = TabController(length: 3, vsync: this);
     _tabController.addListener(() {
-      setState(() {});
+      if (_tabController.indexIsChanging) {
         _nextQuestion();
+      }
+      setState(() {});
     });
     _dg = widget.distractorGenerator ?? DistractorGenerator();
     _loadSettings();
@@ -105,7 +117,9 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
         _apiKeyMissing = false;
       });
 
-      _nextQuestion();
+      for (var i = 0; i < _tabController.length; i++) {
+        _nextQuestion(i);
+      }
     } catch (e) {
       setState(() {
         _status = 'Error: $e';
@@ -135,8 +149,8 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     return _ReadingInfo(readingsList, hint);
   }
 
-  QuizMode get _mode {
+  QuizMode _modeForIndex(int index) {
-    switch (_tabController.index) {
+    switch (index) {
       case 0:
         return QuizMode.kanjiToEnglish;
       case 1:
@@ -148,117 +162,144 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     }
   }
 
-  void _nextQuestion() {
+  void _nextQuestion([int? index]) {
     if (_deck.isEmpty) return;
 
+    final quizState = _quizStates[index ?? _tabController.index];
+    final mode = _modeForIndex(index ?? _tabController.index);
+
     _deck.sort((a, b) {
-      String srsKey(KanjiItem item) {
+      int getSrsStage(KanjiItem item) {
-        var key = _mode.toString();
+        if (mode == QuizMode.reading) {
-        if (_mode == QuizMode.reading) {
+          final onyomiStage = item.srsItems['${QuizMode.reading}onyomi']?.srsStage;
-          if (item.onyomi.isNotEmpty && item.kunyomi.isNotEmpty) {
+          final kunyomiStage = item.srsItems['${QuizMode.reading}kunyomi']?.srsStage;
-            key += _random.nextBool() ? 'onyomi' : 'kunyomi';
+
-          } else if (item.onyomi.isNotEmpty) {
+          if (onyomiStage != null && kunyomiStage != null) {
-            key += 'onyomi';
+            return min(onyomiStage, kunyomiStage);
-          } else {
-            key += 'kunyomi';
           }
+          return onyomiStage ?? kunyomiStage ?? 0;
         }
-        return key;
+        return item.srsItems[mode.toString()]?.srsStage ?? 0;
       }
 
-      final aSrsItem = a.srsItems[srsKey(a)];
+      DateTime getLastAsked(KanjiItem item) {
-      final bSrsItem = b.srsItems[srsKey(b)];
+        if (mode == QuizMode.reading) {
+          final onyomiLastAsked = item.srsItems['${QuizMode.reading}onyomi']?.lastAsked;
+          final kunyomiLastAsked = item.srsItems['${QuizMode.reading}kunyomi']?.lastAsked;
 
-      final aStage = aSrsItem?.srsStage ?? 0;
+          if (onyomiLastAsked != null && kunyomiLastAsked != null) {
-      final bStage = bSrsItem?.srsStage ?? 0;
+            return onyomiLastAsked.isBefore(kunyomiLastAsked)
+                ? onyomiLastAsked
+                : kunyomiLastAsked;
+          }
+          return onyomiLastAsked ??
+              kunyomiLastAsked ??
+              DateTime.fromMillisecondsSinceEpoch(0);
+        }
+        return item.srsItems[mode.toString()]?.lastAsked ??
+            DateTime.fromMillisecondsSinceEpoch(0);
+      }
+
+      final aStage = getSrsStage(a);
+      final bStage = getSrsStage(b);
 
       if (aStage != bStage) {
         return aStage.compareTo(bStage);
       }
 
-      final aLastAsked =
+      final aLastAsked = getLastAsked(a);
-          aSrsItem?.lastAsked ?? DateTime.fromMillisecondsSinceEpoch(0);
+      final bLastAsked = getLastAsked(b);
-      final bLastAsked =
-          bSrsItem?.lastAsked ?? DateTime.fromMillisecondsSinceEpoch(0);
 
-      if (aLastAsked != bLastAsked) {
       return aLastAsked.compareTo(bLastAsked);
-      }
-
-      return _random.nextDouble().compareTo(_random.nextDouble());
     });
 
-    _current = _deck.first;
+    quizState.current = _deck.first;
+    quizState.key = UniqueKey();
 
-    _correctAnswers = [];
+    quizState.correctAnswers = [];
-    _options = [];
+    quizState.options = [];
-    _readingHint = '';
+    quizState.readingHint = '';
+    quizState.selectedOption = null;
+    quizState.showResult = false;
 
-    switch (_mode) {
+    switch (mode) {
       case QuizMode.kanjiToEnglish:
-        _correctAnswers = [_current!.meanings.first];
+        quizState.correctAnswers = [quizState.current!.meanings.first];
-        _options = [
+        quizState.options = [
-          _correctAnswers.first,
+          quizState.correctAnswers.first,
-          ..._dg.generateMeanings(_current!, _deck, 3)
+          ..._dg.generateMeanings(quizState.current!, _deck, 3)
         ].map(_toTitleCase).toList()
           ..shuffle();
         break;
 
       case QuizMode.englishToKanji:
-        _correctAnswers = [_current!.characters];
+        quizState.correctAnswers = [quizState.current!.characters];
-        _options = [
+        quizState.options = [
-          _correctAnswers.first,
+          quizState.correctAnswers.first,
-          ..._dg.generateKanji(_current!, _deck, 3)
+          ..._dg.generateKanji(quizState.current!, _deck, 3)
         ]..shuffle();
         break;
 
       case QuizMode.reading:
-        final info = _pickReading(_current!);
+        final info = _pickReading(quizState.current!);
-        _correctAnswers = info.correctReadings;
+        quizState.correctAnswers = info.correctReadings;
-        _readingHint = info.hint;
+        quizState.readingHint = info.hint;
 
-        final readingsSource = _readingHint.contains("on'yomi")
+        final readingsSource = quizState.readingHint.contains("on'yomi")
             ? _deck.expand((k) => k.onyomi)
             : _deck.expand((k) => k.kunyomi);
 
         final distractors = readingsSource
-            .where((r) => !_correctAnswers.contains(r))
+            .where((r) => !quizState.correctAnswers.contains(r))
             .toSet()
             .toList()
               ..shuffle();
-        _options = ([
+        quizState.options = ([
-          _correctAnswers[_random.nextInt(_correctAnswers.length)],
+          quizState.correctAnswers[_random.nextInt(quizState.correctAnswers.length)],
           ...distractors.take(3)
         ])
           ..shuffle();
         break;
     }
 
-    setState(() {});
+    setState(() {
+      _isAnswering = false;
+    });
   }
 
   void _answer(String option) async {
-    final isCorrect = _correctAnswers
+    final quizState = _currentQuizState;
+    final mode = _modeForIndex(_tabController.index);
+    final isCorrect = quizState.correctAnswers
         .map((a) => a.toLowerCase().trim())
         .contains(option.toLowerCase().trim());
 
     final repo = Provider.of<DeckRepository>(context, listen: false);
-    final current = _current!;
+    final current = quizState.current!;
 
     String readingType = '';
-    if (_mode == QuizMode.reading) {
+    if (mode == QuizMode.reading) {
-      readingType = _readingHint.contains("on'yomi") ? 'onyomi' : 'kunyomi';
+      readingType = quizState.readingHint.contains("on'yomi") ? 'onyomi' : 'kunyomi';
     }
-    final srsKey = _mode.toString() + readingType;
+    final srsKey = mode.toString() + readingType;
 
     var srsItem = current.srsItems[srsKey];
     final isNew = srsItem == null;
     final srsItemForUpdate = srsItem ??=
-        SrsItem(kanjiId: current.id, quizMode: _mode, readingType: readingType);
+        SrsItem(kanjiId: current.id, quizMode: mode, readingType: readingType);
-    setState(() {
+    
-      _asked += 1;
+        quizState.asked += 1;
+    
+        quizState.selectedOption = option;
+    
+        quizState.showResult = true;
+    
+        setState(() {}); // Trigger UI rebuild to show selected/correct colors
+    
+    
+    
         if (isCorrect) {
-        _score += 1;
+      quizState.score += 1;
       srsItemForUpdate.srsStage += 1;
       if (_playCorrectSound) {
         _audioPlayer.play(AssetSource('sfx/confirm.mp3'));
@@ -268,7 +309,6 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
     }
     srsItemForUpdate.lastAsked = DateTime.now();
     current.srsItems[srsKey] = srsItemForUpdate;
-    });
 
     if (isNew) {
       await repo.insertSrsItem(srsItemForUpdate);
@@ -276,11 +316,11 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
       await repo.updateSrsItem(srsItemForUpdate);
     }
 
-    final correctDisplay = (_mode == QuizMode.kanjiToEnglish)
+    final correctDisplay = (mode == QuizMode.kanjiToEnglish)
-        ? _toTitleCase(_correctAnswers.first)
+        ? _toTitleCase(quizState.correctAnswers.first)
-        : (_mode == QuizMode.reading
+        : (mode == QuizMode.reading
-            ? _correctAnswers.join(', ')
+            ? quizState.correctAnswers.join(', ')
-            : _correctAnswers.first);
+            : quizState.correctAnswers.first);
 
     final snack = SnackBar(
       content: Text(
@@ -297,7 +337,11 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
       ScaffoldMessenger.of(context).showSnackBar(snack);
     }
 
-    Future.delayed(const Duration(milliseconds: 900), _nextQuestion);
+    setState(() {
+      _isAnswering = true; // Disable input after showing result
+    });
+
+    Future.delayed(const Duration(milliseconds: 900), () => _nextQuestion());
   }
 
   @override
@@ -326,22 +370,6 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
       );
     }
 
-    String prompt = '';
-    String subtitle = '';
-
-    switch (_mode) {
-      case QuizMode.kanjiToEnglish:
-        prompt = _current?.characters ?? '';
-        break;
-      case QuizMode.englishToKanji:
-        prompt = _current != null ? _toTitleCase(_current!.meanings.first) : '';
-        break;
-      case QuizMode.reading:
-        prompt = _current?.characters ?? '';
-        subtitle = _readingHint;
-        break;
-    }
-
     return Scaffold(
       appBar: AppBar(
         title: const Text('Kanji Quiz'),
@@ -355,7 +383,41 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
         ),
       ),
       backgroundColor: const Color(0xFF121212),
-      body: Padding(
+      body: TabBarView(
+        controller: _tabController,
+        children: [
+          _buildQuizPage(0),
+          _buildQuizPage(1),
+          _buildQuizPage(2),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildQuizPage(int index) {
+    final quizState = _quizStates[index];
+    final mode = _modeForIndex(index);
+
+    String prompt = '';
+    String subtitle = '';
+
+    if (quizState.current != null) {
+      switch (mode) {
+        case QuizMode.kanjiToEnglish:
+          prompt = quizState.current!.characters;
+          break;
+        case QuizMode.englishToKanji:
+          prompt = _toTitleCase(quizState.current!.meanings.first);
+          break;
+        case QuizMode.reading:
+          prompt = quizState.current!.characters;
+          subtitle = quizState.readingHint;
+          break;
+      }
+    }
+
+    return Padding(
+      key: quizState.key,
       padding: const EdgeInsets.all(16.0),
       child: Column(
         children: [
@@ -396,14 +458,16 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
             child: Column(
               children: [
                 OptionsGrid(
-                    options: _options,
+                  options: quizState.options,
-                    onSelected: _answer,
+                  onSelected: _isAnswering ? (option) {} : _answer,
-                    buttonColor: const Color(0xFF1E1E1E),
+                  isDisabled: false,
-                    textColor: Colors.white,
+                  selectedOption: null,
+                  correctAnswers: [],
+                  showResult: false,
                 ),
                 const SizedBox(height: 8),
                 Text(
-                    'Score: $_score / $_asked',
+                  'Score: ${quizState.score} / ${quizState.asked}',
                   style: const TextStyle(color: Colors.white),
                 ),
               ],
@@ -411,7 +475,6 @@ class _HomeScreenState extends State<HomeScreen> with SingleTickerProviderStateM
           ),
         ],
       ),
-      ),
     );
   }
 }

lib/src/screens/vocab_screen.dart

@@ -4,13 +4,26 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import '../models/kanji_item.dart';
-import '../services/deck_repository.dart';
+import 'package:hirameki_srs/src/services/vocab_deck_repository.dart';
 import '../services/distractor_generator.dart';
 import '../widgets/kanji_card.dart';
 import '../widgets/options_grid.dart';
 import 'package:audioplayers/audioplayers.dart';
 import 'settings_screen.dart';
 
+class _QuizState {
+  VocabularyItem? current;
+  List<String> options = [];
+  List<String> correctAnswers = [];
+  int score = 0;
+  int asked = 0;
+  Key key = UniqueKey();
+  String? selectedOption;
+  bool showResult = false;
+  List<VocabularyItem> shuffledDeck = [];
+  int currentIndex = 0;
+}
+
 class VocabScreen extends StatefulWidget {
   const VocabScreen({super.key});
 
@@ -22,15 +35,14 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
   late TabController _tabController;
   List<VocabularyItem> _deck = [];
   bool _loading = false;
+  bool _isAnswering = false;
   String _status = 'Loading deck...';
   final DistractorGenerator _dg = DistractorGenerator();
   final _audioPlayer = AudioPlayer();
 
-  VocabularyItem? _current;
+  final _quizStates = [_QuizState(), _QuizState(), _QuizState()];
-  List<String> _options = [];
+  _QuizState get _currentQuizState => _quizStates[_tabController.index];
-  List<String> _correctAnswers = [];
+
-  int _score = 0;
-  int _asked = 0;
   bool _playAudio = true;
   bool _playCorrectSound = true;
   bool _apiKeyMissing = false;
@@ -40,8 +52,10 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
     super.initState();
     _tabController = TabController(length: 3, vsync: this);
     _tabController.addListener(() {
-      setState(() {});
+      if (_tabController.indexIsChanging) {
         _nextQuestion();
+      }
+      setState(() {});
     });
     _loadSettings();
     _loadDeck();
@@ -68,7 +82,7 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
     });
 
     try {
-      final repo = Provider.of<DeckRepository>(context, listen: false);
+      final repo = Provider.of<VocabDeckRepository>(context, listen: false);
       await repo.loadApiKey();
       final apiKey = repo.apiKey;
 
@@ -96,7 +110,9 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
         _apiKeyMissing = false;
       });
 
-      _nextQuestion();
+      for (var i = 0; i < _tabController.length; i++) {
+        _nextQuestion(i);
+      }
     } catch (e) {
       setState(() {
         _status = 'Error: $e';
@@ -113,8 +129,8 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
         .join(' ');
   }
 
-  VocabQuizMode get _mode {
+  VocabQuizMode _modeForIndex(int index) {
-    switch (_tabController.index) {
+    switch (index) {
       case 0:
         return VocabQuizMode.vocabToEnglish;
       case 1:
@@ -126,70 +142,84 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
     }
   }
 
-  void _nextQuestion() {
+  void _nextQuestion([int? index]) {
     if (_deck.isEmpty) return;
 
-    List<VocabularyItem> deck = _deck;
+    final quizState = _quizStates[index ?? _tabController.index];
-    if (_mode == VocabQuizMode.audioToEnglish) {
+    final mode = _modeForIndex(index ?? _tabController.index);
-      deck = _deck.where((item) => item.pronunciationAudios.isNotEmpty).toList();
+
-      if (deck.isEmpty) {
+    List<VocabularyItem> currentDeckForMode = _deck;
+    if (mode == VocabQuizMode.audioToEnglish) {
+      currentDeckForMode = _deck.where((item) => item.pronunciationAudios.isNotEmpty).toList();
+      if (currentDeckForMode.isEmpty) {
         setState(() {
           _status = 'No vocabulary with audio found.';
-          _current = null;
+          quizState.current = null;
         });
         return;
       }
     }
 
-    deck.sort((a, b) {
+    // If it's a new session or we've gone through all shuffled items, re-shuffle
-      final aSrsItem = a.srsItems[_mode.toString()] ??
+    if (quizState.shuffledDeck.isEmpty || quizState.currentIndex >= quizState.shuffledDeck.length) {
-          VocabSrsItem(vocabId: a.id, quizMode: _mode);
+      quizState.shuffledDeck = currentDeckForMode.toList(); // Start with a fresh copy
-      final bSrsItem = b.srsItems[_mode.toString()] ??
+      // Apply sorting based on SRS stages here, but only once per shuffle
-          VocabSrsItem(vocabId: b.id, quizMode: _mode);
+      quizState.shuffledDeck.sort((a, b) {
-
+        final aSrsItem = a.srsItems[mode.toString()] ?? VocabSrsItem(vocabId: a.id, quizMode: mode);
+        final bSrsItem = b.srsItems[mode.toString()] ?? VocabSrsItem(vocabId: b.id, quizMode: mode);
         final stageComparison = aSrsItem.srsStage.compareTo(bSrsItem.srsStage);
         if (stageComparison != 0) {
           return stageComparison;
         }
         return aSrsItem.lastAsked.compareTo(bSrsItem.lastAsked);
       });
+      quizState.currentIndex = 0;
+    }
 
-    _current = deck.first;
+    quizState.current = quizState.shuffledDeck[quizState.currentIndex]; // Pick from shuffled deck
-    if (_mode == VocabQuizMode.audioToEnglish) {
+    quizState.currentIndex++; // Advance index
+
+    quizState.key = UniqueKey();
+    if (mode == VocabQuizMode.audioToEnglish) {
       _playCurrentAudio();
     }
 
-    _correctAnswers = [];
+    quizState.correctAnswers = [];
-    _options = [];
+    quizState.options = [];
+    quizState.selectedOption = null;
+    quizState.showResult = false;
 
-    switch (_mode) {
+    switch (mode) {
       case VocabQuizMode.vocabToEnglish:
       case VocabQuizMode.audioToEnglish:
-        _correctAnswers = [_current!.meanings.first];
+        quizState.correctAnswers = [quizState.current!.meanings.first];
-        _options = [
+        quizState.options = [
-          _correctAnswers.first,
+          quizState.correctAnswers.first,
-          ..._dg.generateVocabMeanings(_current!, _deck, 3)
+          ..._dg.generateVocabMeanings(quizState.current!, _deck, 3)
         ].map(_toTitleCase).toList()
           ..shuffle();
         break;
 
       case VocabQuizMode.englishToVocab:
-        _correctAnswers = [_current!.characters];
+        quizState.correctAnswers = [quizState.current!.characters];
-        _options = [
+        quizState.options = [
-          _correctAnswers.first,
+          quizState.correctAnswers.first,
-          ..._dg.generateVocab(_current!, _deck, 3)
+          ..._dg.generateVocab(quizState.current!, _deck, 3)
         ]..shuffle();
         break;
     }
 
-    setState(() {});
+    setState(() {
+      _isAnswering = false;
+    });
   }
 
   Future<void> _playCurrentAudio() async {
-    if (_current == null || _current!.pronunciationAudios.isEmpty) return;
+    final current = _currentQuizState.current;
+    if (current == null || current.pronunciationAudios.isEmpty) return;
 
-    final maleAudios = _current!.pronunciationAudios.where((a) => a.gender == 'male');
+    final maleAudios = current.pronunciationAudios.where((a) => a.gender == 'male');
-    final audioUrl = (maleAudios.isNotEmpty ? maleAudios.first.url : _current!.pronunciationAudios.first.url);
+    final audioUrl = (maleAudios.isNotEmpty ? maleAudios.first.url : current.pronunciationAudios.first.url);
 
     try {
       await _audioPlayer.play(UrlSource(audioUrl));
@@ -199,31 +229,35 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
   }
 
   void _answer(String option) async {
-    final isCorrect = _correctAnswers
+    final quizState = _currentQuizState;
+    final mode = _modeForIndex(_tabController.index);
+    final isCorrect = quizState.correctAnswers
         .map((a) => a.toLowerCase().trim())
         .contains(option.toLowerCase().trim());
 
-    final repo = Provider.of<DeckRepository>(context, listen: false);
+    final repo = Provider.of<VocabDeckRepository>(context, listen: false);
-    final current = _current!;
+    final current = quizState.current!;
 
-    final srsKey = _mode.toString();
+    final srsKey = mode.toString();
 
     var srsItemNullable = current.srsItems[srsKey];
     final isNew = srsItemNullable == null;
     final srsItem =
-        srsItemNullable ?? VocabSrsItem(vocabId: current.id, quizMode: _mode);
+        srsItemNullable ?? VocabSrsItem(vocabId: current.id, quizMode: mode);
+
+    quizState.asked += 1;
+    quizState.selectedOption = option;
+    quizState.showResult = true;
+    setState(() {}); // Trigger UI rebuild to show selected/correct colors
 
-    setState(() {
-      _asked += 1;
     if (isCorrect) {
-        _score += 1;
+      quizState.score += 1;
       srsItem.srsStage += 1;
     } else {
       srsItem.srsStage = max(0, srsItem.srsStage - 1);
     }
     srsItem.lastAsked = DateTime.now();
     current.srsItems[srsKey] = srsItem;
-    });
 
     if (isNew) {
       await repo.insertVocabSrsItem(srsItem);
@@ -231,9 +265,9 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
       await repo.updateVocabSrsItem(srsItem);
     }
 
-    final correctDisplay = (_mode == VocabQuizMode.vocabToEnglish)
+    final correctDisplay = (mode == VocabQuizMode.vocabToEnglish)
-        ? _toTitleCase(_correctAnswers.first)
+        ? _toTitleCase(quizState.correctAnswers.first)
-        : _correctAnswers.first;
+        : quizState.correctAnswers.first;
 
     final snack = SnackBar(
       content: Text(
@@ -254,7 +288,7 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
       if (_playCorrectSound) {
         await _audioPlayer.play(AssetSource('sfx/confirm.mp3'));
       }
-      if (_playAudio && _mode != VocabQuizMode.audioToEnglish) {
+      if (_playAudio && mode != VocabQuizMode.audioToEnglish) {
         final maleAudios =
             current.pronunciationAudios.where((a) => a.gender == 'male');
         if (maleAudios.isNotEmpty) {
@@ -274,9 +308,13 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
         }
       }
     } else {
-      await Future.delayed(const Duration(milliseconds: 900));
+      // No fixed delay for incorrect answers
     }
 
+    setState(() {
+      _isAnswering = true; // Disable input after showing result
+    });
+
     _nextQuestion();
   }
 
@@ -289,7 +327,7 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,
             children: [
-              const Text('WaniKani API key is not set.', style: TextStyle(color: Colors.white)),
+              const Text('WaniKani API key is not set.'),
               const SizedBox(height: 16),
               ElevatedButton(
                 onPressed: () async {
@@ -306,31 +344,6 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
       );
     }
 
-    Widget promptWidget;
-
-    if (_current == null) {
-      promptWidget = const SizedBox.shrink();
-    } else if (_mode == VocabQuizMode.audioToEnglish) {
-      promptWidget = IconButton(
-        icon: const Icon(Icons.volume_up, color: Colors.white, size: 64),
-        onPressed: _playCurrentAudio,
-      );
-    } else {
-      String promptText = '';
-      switch (_mode) {
-        case VocabQuizMode.vocabToEnglish:
-          promptText = _current?.characters ?? '';
-          break;
-        case VocabQuizMode.englishToVocab:
-          promptText = _current != null ? _toTitleCase(_current!.meanings.first) : '';
-          break;
-        case VocabQuizMode.audioToEnglish:
-          // Handled above
-          break;
-      }
-      promptWidget = Text(promptText, style: const TextStyle(fontSize: 48, color: Colors.white));
-    }
-
     return Scaffold(
       appBar: AppBar(
         title: const Text('Vocabulary Quiz'),
@@ -343,8 +356,48 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
           ],
         ),
       ),
-      backgroundColor: const Color(0xFF121212),
+      body: TabBarView(
-      body: Padding(
+        controller: _tabController,
+        children: [
+          _buildQuizPage(0),
+          _buildQuizPage(1),
+          _buildQuizPage(2),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildQuizPage(int index) {
+    final quizState = _quizStates[index];
+    final mode = _modeForIndex(index);
+
+    Widget promptWidget;
+
+    if (quizState.current == null) {
+      promptWidget = const SizedBox.shrink();
+    } else if (mode == VocabQuizMode.audioToEnglish) {
+      promptWidget = IconButton(
+        icon: const Icon(Icons.volume_up, color: Colors.white, size: 64),
+        onPressed: _playCurrentAudio,
+      );
+    } else {
+      String promptText = '';
+      switch (mode) {
+        case VocabQuizMode.vocabToEnglish:
+          promptText = quizState.current!.characters;
+          break;
+        case VocabQuizMode.englishToVocab:
+          promptText = _toTitleCase(quizState.current!.meanings.first);
+          break;
+        case VocabQuizMode.audioToEnglish:
+          // Handled above
+          break;
+      }
+      promptWidget = Text(promptText, style: const TextStyle(fontSize: 48, color: Colors.white));
+    }
+
+    return Padding(
+      key: quizState.key,
       padding: const EdgeInsets.all(16.0),
       child: Column(
         children: [
@@ -353,7 +406,6 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
               Expanded(
                 child: Text(
                   _status,
-                    style: const TextStyle(color: Colors.white),
                 ),
               ),
               if (_loading)
@@ -373,8 +425,6 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
                 child: KanjiCard(
                   characterWidget: promptWidget,
                   subtitle: '',
-                    backgroundColor: const Color(0xFF1E1E1E),
-                    textColor: Colors.white,
                 ),
               ),
             ),
@@ -385,14 +435,16 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
             child: Column(
               children: [
                 OptionsGrid(
-                    options: _options,
+                  options: quizState.options,
-                    onSelected: _answer,
+                  onSelected: _isAnswering ? (option) {} : _answer,
-                    buttonColor: const Color(0xFF1E1E1E),
+                  isDisabled: false,
-                    textColor: Colors.white,
+                  selectedOption: null,
+                  correctAnswers: [],
+                  showResult: false,
                 ),
                 const SizedBox(height: 8),
                 Text(
-                    'Score: $_score / $_asked',
+                  'Score: ${quizState.score} / ${quizState.asked}',
                   style: const TextStyle(color: Colors.white),
                 ),
               ],
@@ -400,7 +452,6 @@ class _VocabScreenState extends State<VocabScreen> with SingleTickerProviderStat
           ),
         ],
       ),
-      ),
     );
   }
 }

lib/src/services/deck_repository.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:convert';
 import 'package:path/path.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:sqflite/sqflite.dart';
@@ -263,154 +262,5 @@ class DeckRepository {
     return items;
   }
 
-  Future<List<VocabSrsItem>> getVocabSrsItems(int vocabId) async {
-    final db = await _openDb();
-    final rows = await db.query(
-      'srs_vocab_items',
-      where: 'vocabId = ?',
-      whereArgs: [vocabId],
-    );
-    return rows.map((r) {
-      return VocabSrsItem(
-        vocabId: r['vocabId'] as int,
-        quizMode: VocabQuizMode.values.firstWhere(
-          (e) => e.toString() == r['quizMode'] as String,
-        ),
-        srsStage: r['srsStage'] as int,
-        lastAsked: DateTime.parse(r['lastAsked'] as String),
-      );
-    }).toList();
-  }
 
-  Future<void> updateVocabSrsItem(VocabSrsItem item) async {
-    final db = await _openDb();
-    await db.update(
-      'srs_vocab_items',
-      {
-        'srsStage': item.srsStage,
-        'lastAsked': item.lastAsked.toIso8601String(),
-      },
-      where: 'vocabId = ? AND quizMode = ?',
-      whereArgs: [item.vocabId, item.quizMode.toString()],
-    );
-  }
-
-  Future<void> insertVocabSrsItem(VocabSrsItem item) async {
-    final db = await _openDb();
-    await db.insert('srs_vocab_items', {
-      'vocabId': item.vocabId,
-      'quizMode': item.quizMode.toString(),
-      'srsStage': item.srsStage,
-      'lastAsked': item.lastAsked.toIso8601String(),
-    }, conflictAlgorithm: ConflictAlgorithm.replace);
-  }
-
-  Future<void> saveVocabulary(List<VocabularyItem> items) async {
-    final db = await _openDb();
-    final batch = db.batch();
-    for (final it in items) {
-      final audios = it.pronunciationAudios
-          .map((a) => {'url': a.url, 'gender': a.gender})
-          .toList();
-      batch.insert('vocabulary', {
-        'id': it.id,
-        'level': it.level,
-        'characters': it.characters,
-        'meanings': it.meanings.join('|'),
-        'readings': it.readings.join('|'),
-        'pronunciation_audios': jsonEncode(audios),
-      }, conflictAlgorithm: ConflictAlgorithm.replace);
-    }
-    await batch.commit(noResult: true);
-  }
-
-  Future<List<VocabularyItem>> loadVocabulary() async {
-    final db = await _openDb();
-    final rows = await db.query('vocabulary');
-    final vocabItems = rows.map((r) {
-      final audiosRaw = r['pronunciation_audios'] as String?;
-      final List<PronunciationAudio> audios = [];
-      if (audiosRaw != null && audiosRaw.isNotEmpty) {
-        try {
-          final decoded = jsonDecode(audiosRaw) as List;
-          for (final audioData in decoded) {
-            audios.add(
-              PronunciationAudio(
-                url: audioData['url'] as String,
-                gender: audioData['gender'] as String,
-              ),
-            );
-          }
-        } catch (e) {
-          // Error decoding, so we'll just have no audio for this item
-        }
-      }
-      return VocabularyItem(
-        id: r['id'] as int,
-        level: r['level'] as int? ?? 0,
-        characters: r['characters'] as String,
-        meanings: (r['meanings'] as String)
-            .split('|')
-            .where((s) => s.isNotEmpty)
-            .toList(),
-        readings: (r['readings'] as String)
-            .split('|')
-            .where((s) => s.isNotEmpty)
-            .toList(),
-        pronunciationAudios: audios,
-      );
-    }).toList();
-
-    for (final item in vocabItems) {
-      final srsItems = await getVocabSrsItems(item.id);
-      for (final srsItem in srsItems) {
-        final key = srsItem.quizMode.toString();
-        item.srsItems[key] = srsItem;
-      }
-    }
-
-    return vocabItems;
-  }
-
-  Future<List<VocabularyItem>> fetchAndCacheVocabularyFromWk([
-    String? apiKey,
-  ]) async {
-    final key = apiKey ?? _apiKey;
-    if (key == null) throw Exception('API key not set');
-
-    final client = WkClient(key);
-    final assignments = await client.fetchAllAssignments(
-      subjectTypes: ['vocabulary'],
-    );
-
-    final unlocked = <int>{};
-    for (final a in assignments) {
-      final data = a['data'] as Map<String, dynamic>;
-      final sidRaw = data['subject_id'];
-      if (sidRaw == null) continue;
-      final sid = sidRaw is int ? sidRaw : int.tryParse(sidRaw.toString());
-      if (sid == null) continue;
-      final started = data['started_at'];
-      final srs = data['srs_stage'];
-      final isUnlocked = (started != null) || (srs != null && (srs as int) > 0);
-      if (isUnlocked) unlocked.add(sid);
-    }
-
-    if (unlocked.isEmpty) return [];
-
-    final subjects = await client.fetchSubjectsByIds(unlocked.toList());
-    final items = subjects
-        .where(
-          (s) =>
-              s['object'] == 'vocabulary' ||
-              (s['data'] != null &&
-                  (s['data'] as Map)['object_type'] == 'vocabulary'),
-        )
-        .map((s) => VocabularyItem.fromSubject(s))
-        .where((k) => k.characters.isNotEmpty && k.meanings.isNotEmpty)
-        .toList();
-
-    await saveVocabulary(items);
-    return items;
-  }
 }

lib/src/services/vocab_deck_repository.dart

@@ -0,0 +1,280 @@
+import 'dart:async';
+import 'dart:convert';
+import 'package:path/path.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:sqflite/sqflite.dart';
+import '../models/kanji_item.dart';
+import '../api/wk_client.dart';
+
+import 'package:flutter_dotenv/flutter_dotenv.dart';
+
+class VocabDeckRepository {
+  Database? _db;
+  String? _apiKey;
+
+  Future<void> setApiKey(String apiKey) async {
+    _apiKey = apiKey;
+    await saveApiKey(apiKey);
+  }
+
+  String? get apiKey => _apiKey;
+
+  Future<Database> _openDb() async {
+    if (_db != null) return _db!;
+    final dir = await getApplicationDocumentsDirectory();
+    final path = join(dir.path, 'wanikani_srs.db');
+
+    _db = await openDatabase(
+      path,
+      version: 7,
+      onCreate: (db, version) async {
+        await db.execute(
+          '''CREATE TABLE kanji (id INTEGER PRIMARY KEY, level INTEGER, characters TEXT, meanings TEXT, onyomi TEXT, kunyomi TEXT)''',
+        );
+        await db.execute(
+          '''CREATE TABLE settings (key TEXT PRIMARY KEY, value TEXT)''',
+        );
+        await db.execute(
+          '''CREATE TABLE srs_items (kanjiId INTEGER, quizMode TEXT, readingType TEXT, srsStage INTEGER, lastAsked TEXT, PRIMARY KEY (kanjiId, quizMode, readingType))''',
+        );
+        await db.execute(
+          '''CREATE TABLE vocabulary (id INTEGER PRIMARY KEY, level INTEGER, characters TEXT, meanings TEXT, readings TEXT, pronunciation_audios TEXT)''',
+        );
+        await db.execute(
+          '''CREATE TABLE srs_vocab_items (vocabId INTEGER, quizMode TEXT, srsStage INTEGER, lastAsked TEXT, PRIMARY KEY (vocabId, quizMode))''',
+        );
+      },
+      onUpgrade: (db, oldVersion, newVersion) async {
+        if (oldVersion < 2) {
+          await db.execute(
+            '''CREATE TABLE IF NOT EXISTS settings (key TEXT PRIMARY KEY, value TEXT)''',
+          );
+        }
+        if (oldVersion < 3) {
+          // Migration from version 2 to 3 was flawed, so we just drop the columns if they exist
+        }
+        if (oldVersion < 4) {
+          await db.execute(
+            '''CREATE TABLE srs_items (kanjiId INTEGER, quizMode TEXT, readingType TEXT, srsStage INTEGER, lastAsked TEXT, PRIMARY KEY (kanjiId, quizMode, readingType))''',
+          );
+          // We are not migrating the old srs data, as it was not mode-specific.
+          // Old columns will be dropped.
+        }
+        if (oldVersion < 5) {
+          await db.execute(
+            '''CREATE TABLE vocabulary (id INTEGER PRIMARY KEY, characters TEXT, meanings TEXT, readings TEXT)''',
+          );
+          await db.execute(
+            '''CREATE TABLE srs_vocab_items (vocabId INTEGER, quizMode TEXT, srsStage INTEGER, lastAsked TEXT, PRIMARY KEY (vocabId, quizMode))''',
+          );
+        }
+        if (oldVersion < 6) {
+          try {
+            await db.execute(
+              'ALTER TABLE vocabulary ADD COLUMN pronunciation_audios TEXT',
+            );
+          } catch (_) {
+            // Ignore error, column might already exist
+          }
+        }
+        if (oldVersion < 7) {
+          try {
+            await db.execute('ALTER TABLE kanji ADD COLUMN level INTEGER');
+            await db.execute('ALTER TABLE vocabulary ADD COLUMN level INTEGER');
+          } catch (_) {
+            // Ignore error, column might already exist
+          }
+        }
+      },
+    );
+
+    return _db!;
+  }
+
+  Future<void> saveApiKey(String apiKey) async {
+    final db = await _openDb();
+    await db.insert('settings', {
+      'key': 'apiKey',
+      'value': apiKey,
+    }, conflictAlgorithm: ConflictAlgorithm.replace);
+  }
+
+  Future<String?> loadApiKey() async {
+    String? envApiKey;
+    try {
+      envApiKey = dotenv.env['WANIKANI_API_KEY'];
+    } catch (e) {
+      // dotenv is not initialized, so we can't get the key.
+      // This is expected in release builds.
+      envApiKey = null;
+    }
+
+    if (envApiKey != null && envApiKey.isNotEmpty) {
+      _apiKey = envApiKey;
+      return _apiKey;
+    }
+
+    final db = await _openDb();
+    final rows = await db.query(
+      'settings',
+      where: 'key = ?',
+      whereArgs: ['apiKey'],
+    );
+    if (rows.isNotEmpty) {
+      _apiKey = rows.first['value'] as String;
+      return _apiKey;
+    }
+    return null;
+  }
+
+  Future<List<VocabSrsItem>> getVocabSrsItems(int vocabId) async {
+    final db = await _openDb();
+    final rows = await db.query(
+      'srs_vocab_items',
+      where: 'vocabId = ?',
+      whereArgs: [vocabId],
+    );
+    return rows.map((r) {
+      return VocabSrsItem(
+        vocabId: r['vocabId'] as int,
+        quizMode: VocabQuizMode.values.firstWhere(
+          (e) => e.toString() == r['quizMode'] as String,
+        ),
+        srsStage: r['srsStage'] as int,
+        lastAsked: DateTime.parse(r['lastAsked'] as String),
+      );
+    }).toList();
+  }
+
+  Future<void> updateVocabSrsItem(VocabSrsItem item) async {
+    final db = await _openDb();
+    await db.update(
+      'srs_vocab_items',
+      {
+        'srsStage': item.srsStage,
+        'lastAsked': item.lastAsked.toIso8601String(),
+      },
+      where: 'vocabId = ? AND quizMode = ?',
+      whereArgs: [item.vocabId, item.quizMode.toString()],
+    );
+  }
+
+  Future<void> insertVocabSrsItem(VocabSrsItem item) async {
+    final db = await _openDb();
+    await db.insert('srs_vocab_items', {
+      'vocabId': item.vocabId,
+      'quizMode': item.quizMode.toString(),
+      'srsStage': item.srsStage,
+      'lastAsked': item.lastAsked.toIso8601String(),
+    }, conflictAlgorithm: ConflictAlgorithm.replace);
+  }
+
+  Future<void> saveVocabulary(List<VocabularyItem> items) async {
+    final db = await _openDb();
+    final batch = db.batch();
+    for (final it in items) {
+      final audios = it.pronunciationAudios
+          .map((a) => {'url': a.url, 'gender': a.gender})
+          .toList();
+      batch.insert('vocabulary', {
+        'id': it.id,
+        'level': it.level,
+        'characters': it.characters,
+        'meanings': it.meanings.join('|'),
+        'readings': it.readings.join('|'),
+        'pronunciation_audios': jsonEncode(audios),
+      }, conflictAlgorithm: ConflictAlgorithm.replace);
+    }
+    await batch.commit(noResult: true);
+  }
+
+  Future<List<VocabularyItem>> loadVocabulary() async {
+    final db = await _openDb();
+    final rows = await db.query('vocabulary');
+    final vocabItems = rows.map((r) {
+      final audiosRaw = r['pronunciation_audios'] as String?;
+      final List<PronunciationAudio> audios = [];
+      if (audiosRaw != null && audiosRaw.isNotEmpty) {
+        try {
+          final decoded = jsonDecode(audiosRaw) as List;
+          for (final audioData in decoded) {
+            audios.add(
+              PronunciationAudio(
+                url: audioData['url'] as String,
+                gender: audioData['gender'] as String,
+              ),
+            );
+          }
+        } catch (e) {
+          // Error decoding, so we'll just have no audio for this item
+        }
+      }
+      return VocabularyItem(
+        id: r['id'] as int,
+        level: r['level'] as int? ?? 0,
+        characters: r['characters'] as String,
+        meanings: (r['meanings'] as String)
+            .split('|')
+            .where((s) => s.isNotEmpty)
+            .toList(),
+        readings: (r['readings'] as String)
+            .split('|')
+            .where((s) => s.isNotEmpty)
+            .toList(),
+        pronunciationAudios: audios,
+      );
+    }).toList();
+
+    for (final item in vocabItems) {
+      final srsItems = await getVocabSrsItems(item.id);
+      for (final srsItem in srsItems) {
+        final key = srsItem.quizMode.toString();
+        item.srsItems[key] = srsItem;
+      }
+    }
+
+    return vocabItems;
+  }
+
+  Future<List<VocabularyItem>> fetchAndCacheVocabularyFromWk([
+    String? apiKey,
+  ]) async {
+    final key = apiKey ?? _apiKey;
+    if (key == null) throw Exception('API key not set');
+
+    final client = WkClient(key);
+    final assignments = await client.fetchAllAssignments(
+      subjectTypes: ['vocabulary'],
+    );
+
+    final unlocked = <int>{};
+    for (final a in assignments) {
+      final data = a['data'] as Map<String, dynamic>;
+      final sidRaw = data['subject_id'];
+      if (sidRaw == null) continue;
+      final sid = sidRaw is int ? sidRaw : int.tryParse(sidRaw.toString());
+      if (sid == null) continue;
+      final started = data['started_at'];
+      final srs = data['srs_stage'];
+      final isUnlocked = (started != null) || (srs != null && (srs as int) > 0);
+      if (isUnlocked) unlocked.add(sid);
+    }
+
+    if (unlocked.isEmpty) return [];
+
+    final subjects = await client.fetchSubjectsByIds(unlocked.toList());
+    final items = subjects
+        .where(
+          (s) =>
+              s['object'] == 'vocabulary' ||
+              (s['data'] != null &&
+                  (s['data'] as Map)['object_type'] == 'vocabulary'),
+        )
+        .map((s) => VocabularyItem.fromSubject(s))
+        .where((k) => k.characters.isNotEmpty && k.meanings.isNotEmpty)
+        .toList();
+
+    await saveVocabulary(items);
+    return items;
+  }
+}

lib/src/widgets/options_grid.dart

@@ -5,6 +5,10 @@ class OptionsGrid extends StatelessWidget {
   final void Function(String) onSelected;
   final Color? buttonColor;
   final Color? textColor;
+  final bool isDisabled;
+  final String? selectedOption;
+  final List<String>? correctAnswers;
+  final bool showResult;
 
   const OptionsGrid({
     super.key,
@@ -12,6 +16,10 @@ class OptionsGrid extends StatelessWidget {
     required this.onSelected,
     this.buttonColor,
     this.textColor,
+    this.isDisabled = false,
+    this.selectedOption,
+    this.correctAnswers,
+    this.showResult = false,
   });
 
   @override
@@ -27,13 +35,24 @@ class OptionsGrid extends StatelessWidget {
       runSpacing: 10,
       alignment: WrapAlignment.center,
       children: options.map((o) {
+        Color currentButtonColor = bg;
+        Color currentTextColor = fg;
+
+        if (showResult) {
+          if (correctAnswers != null && correctAnswers!.contains(o)) {
+            currentButtonColor = Colors.green;
+          } else if (o == selectedOption) {
+            currentButtonColor = Colors.red;
+          }
+        }
+
         return SizedBox(
           width: 160,
           child: ElevatedButton(
-            onPressed: () => onSelected(o),
+            onPressed: isDisabled ? null : () => onSelected(o),
             style: ElevatedButton.styleFrom(
-              backgroundColor: bg,
+              backgroundColor: currentButtonColor,
-              foregroundColor: fg,
+              foregroundColor: currentTextColor,
               shape: RoundedRectangleBorder(
                 borderRadius: BorderRadius.circular(12),
               ),
@@ -41,7 +60,7 @@ class OptionsGrid extends StatelessWidget {
             ),
             child: Text(
               o,
-              style: TextStyle(fontSize: 20, color: fg),
+              style: TextStyle(fontSize: 20, color: currentTextColor),
               textAlign: TextAlign.center,
             ),
           ),