refactor: Improve code formatting and replace print with debugPrint for error logging

- Added Flutter Quill package for rich text editing capabilities.
- Refactored note body handling to support Quill's Document format.
- Updated note editor screen to use QuillEditor and QuillController.
- Enhanced note search functionality to convert note body to plain text.
- Modified note card display to show plain text from note body.
- Updated localization support for Quill in the app.
- Registered necessary plugins for URL launching and file selection on all platforms.
- Updated app icons and other assets for consistency across platforms.
- Updated pubspec.yaml and pubspec.lock to include new dependencies and versions.

.gitignore

@@ -43,3 +43,5 @@ app.*.map.json
 /android/app/debug
 /android/app/profile
 /android/app/release
+
+problems-report.html

lib/app.dart

@@ -3,6 +3,8 @@ import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:flutter_quill/flutter_quill.dart';
 import 'package:notas/data/app_database.dart';
 import 'package:notas/data/api_client.dart';
 import 'package:notas/data/local_vault_service.dart';
@@ -14,6 +16,7 @@ import 'package:notas/screens/biometric_gate_screen.dart';
 import 'package:notas/screens/home_screen.dart';
 import 'package:notas/screens/settings_screen.dart';
 import 'package:notas/screens/vault_access_screen.dart';
+import 'package:notas/theme/app_palette.dart';
 import 'package:notas/theme/app_theme.dart';
 import 'package:notas/widgets/sync_status.dart';
 import 'package:path/path.dart' as p;
@@ -43,6 +46,7 @@ class _NotesAppState extends State<NotesApp>
   static const Duration _syncInterval = Duration(minutes: 5);
   static const Duration _windowSizeSaveDelay = Duration(milliseconds: 350);
   static const String _themeSeedColorKey = 'theme_seed_color_v1';
+  static const String _themeModeKey = 'theme_mode_v1';
 
   final LocalVaultService _vaultService = LocalVaultService.instance;
   final GlobalKey<ScaffoldMessengerState> _scaffoldMessengerKey =
@@ -69,6 +73,138 @@ class _NotesAppState extends State<NotesApp>
   int _syncOperationId = 0;
   int _homeRefreshToken = 0;
   Color _themeSeedColor = Colors.amber;
+  ThemeMode _themeMode = ThemeMode.system;
+
+  // Cached ThemeData for light and dark variants.
+  ThemeData? _lightTheme;
+  ThemeData? _darkTheme;
+
+  bool _isSyncBannerVisible() {
+    switch (_syncStatus) {
+      case SyncStatus.preparing:
+      case SyncStatus.encrypting:
+      case SyncStatus.uploading:
+      case SyncStatus.waitingResponse:
+      case SyncStatus.decrypting:
+      case SyncStatus.syncing:
+      case SyncStatus.synced:
+      case SyncStatus.error:
+        return true;
+      case SyncStatus.idle:
+        return false;
+    }
+  }
+
+  Widget _buildSyncBanner(BuildContext context) {
+    if (!_isSyncBannerVisible()) {
+      return const SizedBox.shrink();
+    }
+
+    final AppPalette palette = _activePalette();
+    final String message =
+        _syncErrorMessage ?? _syncDetailMessage ?? 'Sincronizando...';
+    final double? progress = _syncProgress;
+    final IconData icon;
+    final Color accentColor;
+
+    switch (_syncStatus) {
+      case SyncStatus.preparing:
+      case SyncStatus.encrypting:
+      case SyncStatus.uploading:
+      case SyncStatus.waitingResponse:
+      case SyncStatus.decrypting:
+      case SyncStatus.syncing:
+        icon = Icons.cloud_sync_outlined;
+        accentColor = palette.textSecondary;
+        break;
+      case SyncStatus.synced:
+        icon = Icons.check_circle;
+        accentColor = palette.success;
+        break;
+      case SyncStatus.error:
+        icon = Icons.error;
+        accentColor = palette.destructiveAccent;
+        break;
+      case SyncStatus.idle:
+        icon = Icons.cloud_sync_outlined;
+        accentColor = palette.textSecondary;
+        break;
+    }
+
+    return Material(
+      color: palette.surfaceElevated,
+      elevation: 12,
+      child: SafeArea(
+        top: false,
+        child: Container(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+          decoration: BoxDecoration(
+            border: Border(
+              top: BorderSide(color: accentColor.withValues(alpha: 0.45)),
+            ),
+          ),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Row(
+                children: [
+                  Icon(icon, color: accentColor, size: 18),
+                  const SizedBox(width: 10),
+                  Expanded(
+                    child: Text(
+                      message,
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      style: TextStyle(
+                        color: palette.textPrimary,
+                        fontSize: 13,
+                        fontWeight: FontWeight.w600,
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+              if (_syncStatus == SyncStatus.preparing ||
+                  _syncStatus == SyncStatus.encrypting ||
+                  _syncStatus == SyncStatus.uploading ||
+                  _syncStatus == SyncStatus.waitingResponse ||
+                  _syncStatus == SyncStatus.decrypting ||
+                  _syncStatus == SyncStatus.syncing) ...[
+                const SizedBox(height: 8),
+                ClipRRect(
+                  borderRadius: BorderRadius.circular(999),
+                  child: LinearProgressIndicator(
+                    minHeight: 4,
+                    value: progress,
+                    backgroundColor: palette.borderMuted,
+                  ),
+                ),
+              ],
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Brightness _effectiveBrightness() {
+    switch (_themeMode) {
+      case ThemeMode.dark:
+        return Brightness.dark;
+      case ThemeMode.light:
+        return Brightness.light;
+      case ThemeMode.system:
+        return WidgetsBinding.instance.platformDispatcher.platformBrightness;
+    }
+  }
+
+  AppPalette _activePalette() {
+    return AppPalette.fromBrightness(
+      _effectiveBrightness(),
+      seedColor: _themeSeedColor,
+    );
+  }
 
   @override
   void initState() {
@@ -79,6 +215,7 @@ class _NotesAppState extends State<NotesApp>
       windowManager.setPreventClose(true);
     }
     _loadThemeSeedColor();
+    _loadThemeMode();
     _bootstrapVault();
   }
 
@@ -105,13 +242,13 @@ class _NotesAppState extends State<NotesApp>
 
     setState(() {
       _themeSeedColor = Color(storedColorValue);
-      _themeData = AppTheme.theme(seedColor: _themeSeedColor);
+      _updateThemeData();
     });
   }
 
   Future<void> _setThemeSeedColor(Color color) async {
     final SharedPreferences prefs = await SharedPreferences.getInstance();
-    await prefs.setInt(_themeSeedColorKey, color.value);
+    await prefs.setInt(_themeSeedColorKey, color.toARGB32());
 
     if (!mounted) {
       return;
@@ -119,15 +256,54 @@ class _NotesAppState extends State<NotesApp>
 
     setState(() {
       _themeSeedColor = color;
-      _themeData = AppTheme.theme(seedColor: _themeSeedColor);
+      _updateThemeData();
     });
   }
 
-  // Cached ThemeData to avoid recomputing on every build.
-  ThemeData? _themeData;
+  Future<void> _loadThemeMode() async {
+    final SharedPreferences prefs = await SharedPreferences.getInstance();
+    final int? stored = prefs.getInt(_themeModeKey);
+    if (!mounted) return;
 
-  ThemeData get _theme =>
-      _themeData ??= AppTheme.theme(seedColor: _themeSeedColor);
+    setState(() {
+      if (stored == null) {
+        _themeMode = ThemeMode.system;
+      } else if (stored == 1) {
+        _themeMode = ThemeMode.light;
+      } else if (stored == 2) {
+        _themeMode = ThemeMode.dark;
+      } else {
+        _themeMode = ThemeMode.system;
+      }
+      _updateThemeData();
+    });
+  }
+
+  Future<void> _setThemeMode(ThemeMode mode) async {
+    final SharedPreferences prefs = await SharedPreferences.getInstance();
+    final int stored = mode == ThemeMode.system
+        ? 0
+        : (mode == ThemeMode.light ? 1 : 2);
+    await prefs.setInt(_themeModeKey, stored);
+
+    if (!mounted) return;
+
+    setState(() {
+      _themeMode = mode;
+    });
+  }
+
+  void _updateThemeData() {
+    _lightTheme = AppTheme.theme(
+      seedColor: _themeSeedColor,
+      brightness: Brightness.light,
+    );
+    _darkTheme = AppTheme.theme(
+      seedColor: _themeSeedColor,
+      brightness: Brightness.dark,
+    );
+    // Updated light/dark themes regenerated
+  }
 
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
@@ -418,32 +594,38 @@ class _NotesAppState extends State<NotesApp>
         if (available) {
           bool activated = await _vaultService.enableBiometricProtection();
           while (!activated) {
-            // Ask the user to retry or skip
-            final BuildContext? dialogCtx = _navigatorKey.currentContext;
-            if (dialogCtx == null) {
-              break;
-            }
+            // Ask the user to retry or skip - pass currentContext directly in builder
+            final NavigatorState? navigator = _navigatorKey.currentState;
 
-            final NavigatorState navigator = Navigator.of(dialogCtx);
+            if (navigator == null) break;
+            if (!mounted) return;
 
             final bool? retry = await showDialog<bool>(
-              context: dialogCtx,
-              builder: (BuildContext context) => AlertDialog(
-                title: const Text('No se pudo activar la biometría'),
-                content: const Text(
-                  'No se pudo activar la biometría. ¿Quieres intentarlo de nuevo o entrar sin huella?',
-                ),
-                actions: [
-                  TextButton(
-                    onPressed: () => navigator.pop(false),
-                    child: const Text('Entrar sin huella'),
+              context: context,
+              builder: (BuildContext dialogContext) {
+                final AppPalette palette = _activePalette();
+                return AlertDialog(
+                  backgroundColor: palette.cardBackground,
+                  shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(12),
+                    side: BorderSide(color: palette.border),
                   ),
-                  FilledButton(
-                    onPressed: () => navigator.pop(true),
-                    child: const Text('Reintentar'),
+                  title: const Text('No se pudo activar la biometría'),
+                  content: const Text(
+                    'No se pudo activar la biometría. ¿Quieres intentarlo de nuevo o entrar sin huella?',
                   ),
-                ],
-              ),
+                  actions: [
+                    TextButton(
+                      onPressed: () => navigator.pop(false),
+                      child: const Text('Entrar sin huella'),
+                    ),
+                    FilledButton(
+                      onPressed: () => navigator.pop(true),
+                      child: const Text('Reintentar'),
+                    ),
+                  ],
+                );
+              },
             );
 
             if (retry != true) {
@@ -766,8 +948,8 @@ class _NotesAppState extends State<NotesApp>
           _homeRefreshToken += 1;
         });
 
-        // Reset to idle after 3 seconds
-        Future<void>.delayed(const Duration(seconds: 3), () {
+        // Keep the completion state visible briefly so it can be read.
+        Future<void>.delayed(const Duration(seconds: 1), () {
           if (mounted && syncOperationId == _syncOperationId) {
             setState(() {
               _syncStatus = SyncStatus.idle;
@@ -819,6 +1001,7 @@ class _NotesAppState extends State<NotesApp>
   }
 
   Widget _buildMainShell(NoteRepository repository) {
+    final AppPalette palette = _activePalette();
     final Widget activeScreen = _currentSection == _AppSection.home
         ? HomeScreen(
             key: const ValueKey<String>('home-screen'),
@@ -839,6 +1022,8 @@ class _NotesAppState extends State<NotesApp>
             onForceSync: () => _performSync(forceFull: true),
             currentSeedColor: _themeSeedColor,
             onThemeColorSelected: _setThemeSeedColor,
+            currentThemeMode: _themeMode,
+            onThemeModeSelected: _setThemeMode,
           );
 
     return Shortcuts(
@@ -858,17 +1043,7 @@ class _NotesAppState extends State<NotesApp>
           autofocus: true,
           child: Scaffold(
             body: Container(
-              decoration: const BoxDecoration(
-                gradient: LinearGradient(
-                  colors: [
-                    Color(0xFF191A1D),
-                    Color(0xFF222326),
-                    Color(0xFF101114),
-                  ],
-                  begin: Alignment.topLeft,
-                  end: Alignment.bottomRight,
-                ),
-              ),
+              decoration: BoxDecoration(gradient: palette.backdropGradient),
               child: SafeArea(
                 child: Column(
                   children: [
@@ -896,6 +1071,28 @@ class _NotesAppState extends State<NotesApp>
                         child: activeScreen,
                       ),
                     ),
+                    AnimatedSwitcher(
+                      duration: const Duration(milliseconds: 180),
+                      switchInCurve: Curves.easeOutCubic,
+                      switchOutCurve: Curves.easeInCubic,
+                      transitionBuilder:
+                          (Widget child, Animation<double> animation) {
+                            final Animation<Offset> slideAnimation =
+                                Tween<Offset>(
+                                  begin: const Offset(0.0, 0.35),
+                                  end: Offset.zero,
+                                ).animate(animation);
+
+                            return FadeTransition(
+                              opacity: animation,
+                              child: SlideTransition(
+                                position: slideAnimation,
+                                child: child,
+                              ),
+                            );
+                          },
+                      child: _buildSyncBanner(context),
+                    ),
                   ],
                 ),
               ),
@@ -1028,7 +1225,25 @@ class _NotesAppState extends State<NotesApp>
       title: 'Mis Notas',
       debugShowCheckedModeBanner: false,
       scaffoldMessengerKey: _scaffoldMessengerKey,
-      theme: _theme,
+      localizationsDelegates: const <LocalizationsDelegate<dynamic>>[
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+        FlutterQuillLocalizations.delegate,
+      ],
+      theme:
+          _lightTheme ??
+          AppTheme.theme(
+            seedColor: _themeSeedColor,
+            brightness: Brightness.light,
+          ),
+      darkTheme:
+          _darkTheme ??
+          AppTheme.theme(
+            seedColor: _themeSeedColor,
+            brightness: Brightness.dark,
+          ),
+      themeMode: _themeMode,
       home: homeWidget,
     );
   }

lib/data/app_database.dart

@@ -5,6 +5,8 @@ import 'package:drift/native.dart';
 import 'package:path/path.dart' as p;
 import 'package:path_provider/path_provider.dart';
 
+import 'package:notas/data/note_positioning.dart';
+
 part 'app_database.g.dart';
 
 @DataClassName('DbCategory')
@@ -16,7 +18,8 @@ class Categories extends Table {
   BoolColumn get isDeleted =>
       boolean().named('is_deleted').withDefault(const Constant(false))();
   IntColumn get colorValue => integer().nullable().named('color_value')();
-  IntColumn get iconCodePoint => integer().nullable().named('icon_code_point')();
+  IntColumn get iconCodePoint =>
+      integer().nullable().named('icon_code_point')();
   BoolColumn get isDirty =>
       boolean().named('is_dirty').withDefault(const Constant(true))();
   DateTimeColumn get updatedAt => dateTime().named('updated_at')();
@@ -38,17 +41,17 @@ class Notes extends Table {
   BoolColumn get isDeleted =>
       boolean().named('is_deleted').withDefault(const Constant(false))();
   TextColumn get categoryId => text().nullable().named('category_id')();
-    BoolColumn get isDirty =>
+  BoolColumn get isDirty =>
       boolean().named('is_dirty').withDefault(const Constant(true))();
 
-    @override
-    Set<Column> get primaryKey => {id};
+  @override
+  Set<Column> get primaryKey => {id};
 }
 
 @DriftDatabase(tables: [Notes, Categories])
 class AppDatabase extends _$AppDatabase {
   @override
-  int get schemaVersion => 3;
+  int get schemaVersion => 4;
 
   @override
   MigrationStrategy get migration => MigrationStrategy(
@@ -69,6 +72,30 @@ class AppDatabase extends _$AppDatabase {
         await customStatement('UPDATE categories SET color_value = NULL');
         await customStatement('UPDATE categories SET icon_code_point = NULL');
       }
+      if (from < 4) {
+        final List<DbNote> activeNotes =
+            await (select(notes)
+                  ..where((n) => n.isDeleted.equals(false))
+                  ..orderBy([
+                    (note) => OrderingTerm(expression: note.sortIndex),
+                  ]))
+                .get();
+
+        final List<int> rebalancedPositions = rebalanceNotePositions(
+          activeNotes.length,
+        );
+
+        for (var index = 0; index < activeNotes.length; index += 1) {
+          final DbNote row = activeNotes[index];
+          await (update(notes)..where((n) => n.id.equals(row.id))).write(
+            NotesCompanion(
+              sortIndex: Value(rebalancedPositions[index]),
+              updatedAt: Value(DateTime.now()),
+              isDirty: const Value(true),
+            ),
+          );
+        }
+      }
     },
   );
 
@@ -97,17 +124,38 @@ class AppDatabase extends _$AppDatabase {
   // ========== Notes ==========
   Future<List<DbNote>> getAllNotes() {
     return (select(notes)
-          ..orderBy([(note) => OrderingTerm(expression: note.sortIndex)])
+          ..orderBy([
+            (note) => OrderingTerm(
+              expression: note.sortIndex,
+              mode: OrderingMode.desc,
+            ),
+          ])
           ..where((n) => n.isDeleted.equals(false)))
         .get();
   }
 
   Future<int> insertNoteAtTop(NotesCompanion note) {
     return transaction(() async {
-      await customStatement(
-        'UPDATE notes SET sort_index = sort_index + 1, is_dirty = 1 WHERE is_deleted = 0',
-      );
-      return into(notes).insert(note.copyWith(sortIndex: const Value<int>(0)));
+      final DbNote? topNote =
+          await (select(notes)
+                ..where((n) => n.isDeleted.equals(false))
+                ..orderBy([
+                  (note) => OrderingTerm(
+                    expression: note.sortIndex,
+                    mode: OrderingMode.desc,
+                  ),
+                ])
+                ..limit(1))
+              .getSingleOrNull();
+
+      final int nextSortIndex = topNote == null
+          ? 0
+          : topNote.sortIndex + notePositionStep;
+
+      await into(
+        notes,
+      ).insert(note.copyWith(sortIndex: Value<int>(nextSortIndex)));
+      return nextSortIndex;
     });
   }
 
@@ -133,11 +181,6 @@ class AppDatabase extends _$AppDatabase {
         isDirty: const Value(true),
       ),
     );
-
-    await customStatement(
-      'UPDATE notes SET sort_index = sort_index - 1, is_dirty = 1 WHERE sort_index > ? AND is_deleted = 0',
-      [removedIndex],
-    );
   }
 
   Future<void> deleteNoteAndShift({
@@ -165,44 +208,67 @@ class AppDatabase extends _$AppDatabase {
     required int oldIndex,
     required int newIndex,
   }) {
-    if (oldIndex == newIndex) {
-      return Future<void>.value();
-    }
-
     return transaction(() async {
-      final List<DbNote> all = await (select(
-        notes,
-      )..where((n) => n.isDeleted.equals(false))).get();
+      final List<DbNote> orderedNotes =
+          await (select(notes)
+                ..where((n) => n.isDeleted.equals(false))
+                ..orderBy([
+                  (note) => OrderingTerm(
+                    expression: note.sortIndex,
+                    mode: OrderingMode.desc,
+                  ),
+                ]))
+              .get();
 
-      final int count = all.length;
-      if (count == 0) {
+      final int currentIndex = orderedNotes.indexWhere(
+        (DbNote row) => row.id == id,
+      );
+      if (currentIndex == -1) {
         return;
       }
 
-      final int maxIndex = count - 1;
-
-      final int safeOld = oldIndex.clamp(0, maxIndex);
-      final int safeNew = newIndex.clamp(0, maxIndex);
-
-      if (safeOld == safeNew) {
+      final int safeNewIndex = newIndex.clamp(0, orderedNotes.length - 1);
+      if (currentIndex == safeNewIndex) {
         return;
       }
 
-      if (safeOld < safeNew) {
-        await customStatement(
-          'UPDATE notes SET sort_index = sort_index - 1, is_dirty = 1 WHERE sort_index > ? AND sort_index <= ? AND is_deleted = 0',
-          [safeOld, safeNew],
-        );
+      final DbNote movedNote = orderedNotes.removeAt(currentIndex);
+      orderedNotes.insert(safeNewIndex, movedNote);
+
+      final int? newStoredPosition;
+      if (safeNewIndex == 0) {
+        newStoredPosition = orderedNotes[1].sortIndex + notePositionStep;
+      } else if (safeNewIndex == orderedNotes.length - 1) {
+        newStoredPosition =
+            orderedNotes[orderedNotes.length - 2].sortIndex - notePositionStep;
       } else {
-        await customStatement(
-          'UPDATE notes SET sort_index = sort_index + 1, is_dirty = 1 WHERE sort_index >= ? AND sort_index < ? AND is_deleted = 0',
-          [safeNew, safeOld],
+        newStoredPosition = midpointNotePosition(
+          higherPosition: orderedNotes[safeNewIndex - 1].sortIndex,
+          lowerPosition: orderedNotes[safeNewIndex + 1].sortIndex,
         );
       }
 
+      if (newStoredPosition == null) {
+        final List<int> rebalancedPositions = rebalanceNotePositions(
+          orderedNotes.length,
+        );
+
+        for (var index = 0; index < orderedNotes.length; index += 1) {
+          final DbNote row = orderedNotes[index];
+          await (update(notes)..where((n) => n.id.equals(row.id))).write(
+            NotesCompanion(
+              sortIndex: Value<int>(rebalancedPositions[index]),
+              updatedAt: Value<DateTime>(DateTime.now()),
+              isDirty: const Value(true),
+            ),
+          );
+        }
+        return;
+      }
+
       await (update(notes)..where((n) => n.id.equals(id))).write(
         NotesCompanion(
-          sortIndex: Value<int>(safeNew),
+          sortIndex: Value<int>(newStoredPosition),
           updatedAt: Value<DateTime>(DateTime.now()),
           isDirty: const Value(true),
         ),
@@ -217,15 +283,23 @@ class AppDatabase extends _$AppDatabase {
   }
 
   Future<List<DbNote>> getDeletedNotes() {
-      // A note is considered deleted (in the trash) when `is_deleted` is true
-      // and at least one of `title` or `body` is not empty. Previously the
-      // query required both title AND body to be non-empty which excluded
-      // notes that had an empty body (common) from appearing in the trash.
-      return (select(notes)..where(
-        (n) => n.isDeleted.equals(true) &
-        (n.title.isNotValue('') | n.body.isNotValue('')),
-      ))
-      .get();
+    // A note is considered deleted (in the trash) when `is_deleted` is true
+    // and at least one of `title` or `body` is not empty. Previously the
+    // query required both title AND body to be non-empty which excluded
+    // notes that had an empty body (common) from appearing in the trash.
+    return (select(notes)
+          ..where(
+            (n) =>
+                n.isDeleted.equals(true) &
+                (n.title.isNotValue('') | n.body.isNotValue('')),
+          )
+          ..orderBy([
+            (note) => OrderingTerm(
+              expression: note.sortIndex,
+              mode: OrderingMode.desc,
+            ),
+          ]))
+        .get();
   }
 
   Future<List<DbCategory>> getCategoriesChangedSince(DateTime since) {

lib/data/note_body.dart

@@ -0,0 +1,38 @@
+import 'dart:convert';
+
+import 'package:flutter_quill/flutter_quill.dart';
+
+Document noteBodyToDocument(String storedBody) {
+  final String trimmedBody = storedBody.trimLeft();
+
+  if (trimmedBody.startsWith('[')) {
+    try {
+      final dynamic decoded = jsonDecode(storedBody);
+      if (decoded is List) {
+        return Document.fromJson(decoded);
+      }
+    } catch (_) {
+      // Fall back to plain text for legacy notes or malformed JSON.
+    }
+  }
+
+  if (storedBody.isEmpty) {
+    return Document();
+  }
+
+  final String plainText = storedBody.endsWith('\n')
+      ? storedBody
+      : '$storedBody\n';
+
+  return Document.fromJson(<dynamic>[
+    <String, String>{'insert': plainText},
+  ]);
+}
+
+String noteBodyToPlainText(String storedBody) {
+  return noteBodyToDocument(storedBody).toPlainText();
+}
+
+String noteDocumentToStorageJson(Document document) {
+  return jsonEncode(document.toDelta().toJson());
+}

lib/data/note_positioning.dart

@@ -0,0 +1,46 @@
+const int notePositionScale = 10;
+const int notePositionStep = 1000 * notePositionScale;
+const int notePositionRebalanceThreshold = 1;
+
+int toStoredNotePosition(double position) {
+  return (position * notePositionScale).round();
+}
+
+double fromStoredNotePosition(int storedPosition) {
+  return storedPosition / notePositionScale;
+}
+
+int nextTopNotePosition(Iterable<int> storedPositions) {
+  int? highestPosition;
+
+  for (final int position in storedPositions) {
+    if (highestPosition == null || position > highestPosition) {
+      highestPosition = position;
+    }
+  }
+
+  if (highestPosition == null) {
+    return 0;
+  }
+
+  return highestPosition + notePositionStep;
+}
+
+int? midpointNotePosition({
+  required int higherPosition,
+  required int lowerPosition,
+}) {
+  final int gap = higherPosition - lowerPosition;
+  if (gap <= notePositionRebalanceThreshold) {
+    return null;
+  }
+
+  return lowerPosition + (gap ~/ 2);
+}
+
+List<int> rebalanceNotePositions(int itemCount) {
+  return List<int>.generate(
+    itemCount,
+    (int index) => (itemCount - 1 - index) * notePositionStep,
+  );
+}

lib/data/note_repository.dart

@@ -6,6 +6,7 @@ import 'dart:io' show Platform;
 import 'package:drift/drift.dart';
 import 'package:notas/data/app_database.dart';
 import 'package:notas/data/api_client.dart';
+import 'package:notas/data/note_positioning.dart';
 import 'package:notas/data/sync_models.dart';
 import 'package:notas/models/note.dart';
 import 'package:notas/models/category.dart';
@@ -55,12 +56,16 @@ class NoteRepository {
     return categories;
   }
 
+  Future<DateTime?> getLastSyncAt() async {
+    return _authApi.getLastSyncAt();
+  }
+
   Future<void> createCategory(Category category) async {
     debugPrint('createCategory called with: ${category.name}');
 
-    final DbCategory? existingCategory = await (
-      _database.select(_database.categories)..where((c) => c.id.equals(category.id))
-    ).getSingleOrNull();
+    final DbCategory? existingCategory = await (_database.select(
+      _database.categories,
+    )..where((c) => c.id.equals(category.id))).getSingleOrNull();
     final int effectiveServerVersion = math.max(
       category.serverVersion,
       existingCategory?.serverVersion ?? category.serverVersion,
@@ -91,7 +96,7 @@ class NoteRepository {
   }
 
   Future<Note> createNote(Note note) async {
-    await _database.insertNoteAtTop(
+    final int storedPosition = await _database.insertNoteAtTop(
       NotesCompanion.insert(
         id: note.id,
         title: note.title,
@@ -106,7 +111,10 @@ class NoteRepository {
       ),
     );
 
-    return note.copyWith(position: 0, isDirty: true);
+    return note.copyWith(
+      position: fromStoredNotePosition(storedPosition),
+      isDirty: true,
+    );
   }
 
   Future<Note> updateNote(Note note) async {
@@ -137,7 +145,7 @@ class NoteRepository {
       isDeleted: false,
       isPermanentlyDeleted: false,
       isDirty: true,
-      position: row.sortIndex.toDouble(),
+      position: fromStoredNotePosition(row.sortIndex),
     );
   }
 
@@ -364,7 +372,7 @@ class NoteRepository {
             body: isPermanentlyDeleted ? '' : decryptedBody,
             createdAt: existingNote.createdAt,
             updatedAt: noteResponse.updatedAt,
-            sortIndex: noteResponse.position.round(),
+            sortIndex: toStoredNotePosition(noteResponse.position),
             serverVersion: noteResponse.serverVersion,
             isDeleted: noteResponse.isDeleted,
             categoryId: isPermanentlyDeleted ? null : noteResponse.categoryId,
@@ -382,7 +390,7 @@ class NoteRepository {
                 body: Value(isPermanentlyDeleted ? '' : decryptedBody),
                 createdAt: Value(noteResponse.updatedAt),
                 updatedAt: Value(noteResponse.updatedAt),
-                sortIndex: Value(noteResponse.position.round()),
+                sortIndex: Value(toStoredNotePosition(noteResponse.position)),
                 serverVersion: Value(noteResponse.serverVersion),
                 isDeleted: Value(noteResponse.isDeleted),
                 categoryId: Value(
@@ -412,7 +420,7 @@ class NoteRepository {
       body: row.body,
       createdAt: row.createdAt,
       updatedAt: row.updatedAt,
-      position: row.sortIndex.toDouble(),
+      position: fromStoredNotePosition(row.sortIndex),
       serverVersion: row.serverVersion,
       isDeleted: row.isDeleted,
       isPermanentlyDeleted: _isPermanentlyDeleted(row),
@@ -585,7 +593,7 @@ Map<String, Object?> _dbNoteToEncryptionInput(DbNote row, int index) {
     'updatedAt': row.updatedAt.toIso8601String(),
     'categoryId': row.categoryId,
     'serverVersion': row.serverVersion,
-    'position': row.sortIndex,
+    'position': fromStoredNotePosition(row.sortIndex),
     'isDeleted': row.isDeleted,
     'isPermanentlyDeleted': isPermanentlyDeleted,
   };
@@ -635,7 +643,7 @@ Future<List<Map<String, Object?>>> _encryptNoteBatch(
       'encryptedTitle': encryptedTitle,
       'encryptedBody': encryptedBody,
       'serverVersion': note['serverVersion']! as int,
-      'position': note['position']! as int,
+      'position': (note['position'] as num).toDouble(),
       'isDeleted': note['isDeleted']! as bool,
       'isPermanentlyDeleted': isPermanentlyDeleted,
       'updatedAt': note['updatedAt']! as String,
@@ -668,7 +676,7 @@ Future<List<Map<String, Object?>>> _decryptNoteBatch(
           masterKey,
         );
       } catch (e) {
-        print('Failed to decrypt note ${note['id']}: $e');
+        debugPrint('Failed to decrypt note ${note['id']}: $e');
       }
     } else {
       decryptedTitle = '';

lib/screens/biometric_choice_screen.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:notas/theme/app_palette.dart';
 
 class BiometricChoiceScreen extends StatelessWidget {
   const BiometricChoiceScreen({
@@ -14,19 +15,11 @@ class BiometricChoiceScreen extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return Scaffold(
       body: Container(
-        decoration: const BoxDecoration(
-          gradient: LinearGradient(
-            colors: [
-              Color(0xFF191A1D),
-              Color(0xFF222326),
-              Color(0xFF101114),
-            ],
-            begin: Alignment.topLeft,
-            end: Alignment.bottomRight,
-          ),
-        ),
+        decoration: BoxDecoration(gradient: palette.backdropGradient),
         child: SafeArea(
           child: Column(
             children: [
@@ -39,12 +32,12 @@ class BiometricChoiceScreen extends StatelessWidget {
                       child: Container(
                         padding: const EdgeInsets.all(24),
                         decoration: BoxDecoration(
-                          color: const Color(0xFF1D1E20),
+                          color: palette.cardBackground,
                           borderRadius: BorderRadius.circular(24),
-                          border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
+                          border: Border.all(color: palette.border),
                           boxShadow: [
                             BoxShadow(
-                              color: Colors.black.withValues(alpha: 0.35),
+                              color: palette.shadowSoft,
                               blurRadius: 30,
                               offset: const Offset(0, 18),
                             ),
@@ -74,7 +67,7 @@ class BiometricChoiceScreen extends StatelessWidget {
                               '¿Quieres que la app te pida huella o cara antes de entrar a tus notas?',
                               textAlign: TextAlign.center,
                               style: TextStyle(
-                                color: Colors.white.withValues(alpha: 0.72),
+                                color: palette.textSecondary,
                                 height: 1.4,
                               ),
                             ),
@@ -82,13 +75,17 @@ class BiometricChoiceScreen extends StatelessWidget {
                             FilledButton(
                               onPressed: isBusy ? null : onEnableBiometrics,
                               style: FilledButton.styleFrom(
-                                padding: const EdgeInsets.symmetric(vertical: 14),
+                                padding: const EdgeInsets.symmetric(
+                                  vertical: 14,
+                                ),
                               ),
                               child: isBusy
                                   ? const SizedBox(
                                       width: 18,
                                       height: 18,
-                                      child: CircularProgressIndicator(strokeWidth: 2),
+                                      child: CircularProgressIndicator(
+                                        strokeWidth: 2,
+                                      ),
                                     )
                                   : const Text('Sí, activar huella'),
                             ),
@@ -96,9 +93,11 @@ class BiometricChoiceScreen extends StatelessWidget {
                             OutlinedButton(
                               onPressed: isBusy ? null : onSkipBiometrics,
                               style: OutlinedButton.styleFrom(
-                                padding: const EdgeInsets.symmetric(vertical: 14),
-                                side: const BorderSide(color: Colors.white24),
-                                foregroundColor: Colors.white,
+                                padding: const EdgeInsets.symmetric(
+                                  vertical: 14,
+                                ),
+                                side: BorderSide(color: palette.border),
+                                foregroundColor: palette.textPrimary,
                               ),
                               child: const Text('No, entrar sin huella'),
                             ),

lib/screens/biometric_gate_screen.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:notas/theme/app_palette.dart';
 
 class BiometricGateScreen extends StatefulWidget {
   const BiometricGateScreen({
@@ -38,19 +39,11 @@ class _BiometricGateScreenState extends State<BiometricGateScreen> {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return Scaffold(
       body: Container(
-        decoration: const BoxDecoration(
-          gradient: LinearGradient(
-            colors: [
-              Color(0xFF191A1D),
-              Color(0xFF222326),
-              Color(0xFF101114),
-            ],
-            begin: Alignment.topLeft,
-            end: Alignment.bottomRight,
-          ),
-        ),
+        decoration: BoxDecoration(gradient: palette.backdropGradient),
         child: SafeArea(
           child: Column(
             children: [
@@ -63,12 +56,12 @@ class _BiometricGateScreenState extends State<BiometricGateScreen> {
                       child: Container(
                         padding: const EdgeInsets.all(24),
                         decoration: BoxDecoration(
-                          color: const Color(0xFF1D1E20),
+                          color: palette.cardBackground,
                           borderRadius: BorderRadius.circular(24),
-                          border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
+                          border: Border.all(color: palette.border),
                           boxShadow: [
                             BoxShadow(
-                              color: Colors.black.withValues(alpha: 0.35),
+                              color: palette.shadowSoft,
                               blurRadius: 30,
                               offset: const Offset(0, 18),
                             ),
@@ -98,21 +91,27 @@ class _BiometricGateScreenState extends State<BiometricGateScreen> {
                               'Pon tu huella o cara para entrar a tus notas.',
                               textAlign: TextAlign.center,
                               style: TextStyle(
-                                color: Colors.white.withValues(alpha: 0.72),
+                                color: palette.textSecondary,
                                 height: 1.4,
                               ),
                             ),
                             const SizedBox(height: 22),
                             FilledButton(
-                              onPressed: widget.isBusy ? null : widget.onUnlockRequested,
+                              onPressed: widget.isBusy
+                                  ? null
+                                  : widget.onUnlockRequested,
                               style: FilledButton.styleFrom(
-                                padding: const EdgeInsets.symmetric(vertical: 14),
+                                padding: const EdgeInsets.symmetric(
+                                  vertical: 14,
+                                ),
                               ),
                               child: widget.isBusy
                                   ? const SizedBox(
                                       width: 18,
                                       height: 18,
-                                      child: CircularProgressIndicator(strokeWidth: 2),
+                                      child: CircularProgressIndicator(
+                                        strokeWidth: 2,
+                                      ),
                                     )
                                   : const Text('Desbloquear'),
                             ),

lib/screens/note_editor_screen.dart

@@ -1,669 +1,217 @@
 import 'dart:async';
-import 'dart:math' as math;
 
 import 'package:flutter/material.dart';
-import 'package:intl/intl.dart';
+import 'package:flutter_quill/flutter_quill.dart';
 
-import 'package:notas/models/category.dart';
+import 'package:notas/data/note_body.dart';
+import 'package:notas/data/note_repository.dart';
 import 'package:notas/models/note.dart';
-import 'package:notas/platform/app_platform.dart';
-import 'package:notas/widgets/category_style.dart';
-
-// NoteEditorScreen: unified UI for creating and editing notes.
-// - Use `NoteEditorScreen.showDialog(context, note: existing)` to edit.
-// - Use `NoteEditorScreen.showDialog(context)` to create a new note.
-// The screen returns either a `Note` (saved) or the string `'delete'` when
-// the user confirmed deletion. `null` indicates the user closed without saving.
+import 'package:notas/theme/app_palette.dart';
 
 class NoteEditorScreen extends StatefulWidget {
   const NoteEditorScreen({
     super.key,
+    this.repository,
+    this.saveNote,
     required this.note,
-    this.categoryId,
-    this.categories = const <Category>[],
-    this.onComplete,
+    this.embedded = false,
+    this.onSaved,
   });
 
-  final Note? note;
-  final String? categoryId;
-  final List<Category> categories;
-  final ValueChanged<dynamic>? onComplete;
+  final NoteRepository? repository;
+  final Future<Note> Function(Note note)? saveNote;
+  final Note note;
+  final bool embedded;
+  final ValueChanged<Note>? onSaved;
 
   @override
   State<NoteEditorScreen> createState() => _NoteEditorScreenState();
-
-  static Future<dynamic> _showGeneralEditorDialog(
-    BuildContext context, {
-    Note? note,
-    String? categoryId,
-    List<Category> categories = const <Category>[],
-  }) {
-    return showGeneralDialog<dynamic>(
-      context: context,
-      barrierDismissible: false,
-      barrierColor: Colors.transparent,
-      transitionDuration: const Duration(milliseconds: 200),
-      pageBuilder: (context, animation, secondaryAnimation) {
-        return NoteEditorScreen(
-          note: note,
-          categoryId: categoryId,
-          categories: categories,
-        );
-      },
-      transitionBuilder: (context, animation, secondaryAnimation, child) {
-        return ScaleTransition(scale: animation, child: child);
-      },
-    );
-  }
-
-  static Future<dynamic> showDialog(
-    BuildContext context, {
-    Note? note,
-    String? categoryId,
-    List<Category> categories = const <Category>[],
-  }) {
-    if (isAndroid || isIOS) {
-      return _showGeneralEditorDialog(
-        context,
-        note: note,
-        categoryId: categoryId,
-        categories: categories,
-      );
-    }
-
-    final OverlayState? overlayState = Overlay.of(context, rootOverlay: true);
-    if (overlayState == null) {
-      return _showGeneralEditorDialog(
-        context,
-        note: note,
-        categoryId: categoryId,
-        categories: categories,
-      );
-    }
-
-    final Completer<dynamic> completer = Completer<dynamic>();
-    late final OverlayEntry entry;
-
-    entry = OverlayEntry(
-      builder: (BuildContext overlayContext) {
-        return NoteEditorScreen(
-          note: note,
-          categoryId: categoryId,
-          categories: categories,
-          onComplete: (dynamic result) {
-            if (!completer.isCompleted) {
-              completer.complete(result);
-            }
-            if (entry.mounted) {
-              entry.remove();
-            }
-          },
-        );
-      },
-    );
-
-    overlayState.insert(entry);
-    return completer.future;
-  }
 }
 
 class _NoteEditorScreenState extends State<NoteEditorScreen> {
-  late TextEditingController _titleController;
-  late TextEditingController _bodyController;
-  late Note _currentNote;
-  late bool _isNewNote;
-  String? _selectedCategoryId;
-  final GlobalKey _categorySelectorKey = GlobalKey();
-  OverlayEntry? _categoryMenuEntry;
-  bool _didComplete = false;
+  static const Duration _debounceDuration = Duration(seconds: 1);
 
-  bool get _isMobileLayout => isAndroid || isIOS;
+  late final TextEditingController _titleController;
+  late final QuillController _bodyController;
+  late final FocusNode _bodyFocusNode;
+  late final ScrollController _bodyScrollController;
+
+  Timer? _debounceTimer;
+  bool _isSaving = false;
+  bool _saveQueued = false;
+  late Note _baselineNote;
+
+  AppPalette _paletteOf(BuildContext context) {
+    return Theme.of(context).extension<AppPalette>() ??
+        AppPalette.fromBrightness(Theme.of(context).brightness);
+  }
 
   @override
   void initState() {
     super.initState();
-    _isNewNote = widget.note == null;
-
-    if (_isNewNote) {
-      final DateTime now = DateTime.now();
-      _currentNote = Note(
-        title: '',
-        body: '',
-        createdAt: now,
-        updatedAt: now,
-        position: 0,
-        categoryId: widget.categoryId,
-      );
-    } else {
-      _currentNote = widget.note!;
-    }
-
-    _selectedCategoryId = _currentNote.categoryId ?? widget.categoryId;
-
-    _titleController = TextEditingController(text: _currentNote.title);
-    _bodyController = TextEditingController(text: _currentNote.body);
+    _baselineNote = widget.note;
+    _titleController = TextEditingController(text: widget.note.title)
+      ..addListener(_scheduleSave);
+    _bodyController = QuillController(
+      document: noteBodyToDocument(widget.note.body),
+      selection: const TextSelection.collapsed(offset: 0),
+    )..addListener(_scheduleSave);
+    _bodyFocusNode = FocusNode();
+    _bodyScrollController = ScrollController();
   }
 
   @override
   void dispose() {
-    _closeCategoryMenu();
+    _debounceTimer?.cancel();
     _titleController.dispose();
     _bodyController.dispose();
+    _bodyFocusNode.dispose();
+    _bodyScrollController.dispose();
     super.dispose();
   }
 
-  void _complete(dynamic result) {
-    if (_didComplete) {
+  String _bodyAsJson() {
+    return noteDocumentToStorageJson(_bodyController.document);
+  }
+
+  void _scheduleSave() {
+    _debounceTimer?.cancel();
+    _debounceTimer = Timer(_debounceDuration, () {
+      unawaited(_saveNow());
+    });
+  }
+
+  Future<void> _saveNow() async {
+    if (!mounted) {
       return;
     }
 
-    _didComplete = true;
-    _closeCategoryMenu();
-
-    final ValueChanged<dynamic>? callback = widget.onComplete;
-
-    if (callback != null) {
-      callback(result);
-      return;
-    }
-
-    Navigator.of(context).pop(result);
-  }
-
-  void _closeWithoutSaving() {
-    _complete(null);
-  }
-
-  void _saveNote() {
     final String title = _titleController.text.trim();
-    final String body = _bodyController.text.trim();
-    final bool categoryChanged = _selectedCategoryId != _currentNote.categoryId;
-
-    if (title.isEmpty && body.isEmpty && !categoryChanged) {
-      _complete(null);
-      return;
-    }
-
-    final Note updatedNote = _currentNote.copyWith(
+    final String body = _bodyAsJson();
+    final Note draft = _baselineNote.copyWith(
       title: title.isEmpty ? 'Sin título' : title,
       body: body,
-      categoryId: _selectedCategoryId,
+      categoryId: _baselineNote.categoryId,
       updatedAt: DateTime.now(),
       isDirty: true,
     );
 
-    _complete(updatedNote);
-  }
+    final bool hasChanges =
+        draft.title != _baselineNote.title ||
+        draft.body != _baselineNote.body ||
+        draft.categoryId != _baselineNote.categoryId;
 
-  Widget _buildDeleteConfirmationDialog({
-    required ValueChanged<bool> onConfirmed,
-  }) {
-    final bool isDeletedNote = _currentNote.isDeleted;
-
-    return AlertDialog(
-      backgroundColor: const Color(0xFF303134),
-      title: Text(
-        isDeletedNote ? 'Eliminar permanentemente' : 'Eliminar nota',
-        style: const TextStyle(color: Colors.white),
-      ),
-      content: Text(
-        isDeletedNote
-            ? 'Esta nota ya está borrada. Si la eliminas ahora, se borrará permanentemente.'
-            : '¿Estás seguro de que deseas eliminar esta nota?',
-        style: const TextStyle(color: Colors.white70),
-      ),
-      actions: [
-        TextButton(
-          onPressed: () => onConfirmed(false),
-          child: const Text(
-            'Cancelar',
-            style: TextStyle(color: Colors.white70),
-          ),
-        ),
-        TextButton(
-          onPressed: () => onConfirmed(true),
-          child: Text(
-            isDeletedNote ? 'Eliminar permanentemente' : 'Eliminar',
-            style: const TextStyle(color: Colors.red),
-          ),
-        ),
-      ],
-    );
-  }
-
-  Future<bool> _showDeleteConfirmation() async {
-    if (_isMobileLayout) {
-      final bool? confirmed = await showDialog<bool>(
-        context: context,
-        barrierDismissible: false,
-        barrierColor: Colors.transparent,
-        builder: (BuildContext dialogContext) {
-          return _buildDeleteConfirmationDialog(
-            onConfirmed: (bool confirmed) =>
-                Navigator.of(dialogContext).pop(confirmed),
-          );
-        },
-      );
-
-      return confirmed ?? false;
+    if (!hasChanges) {
+      return;
     }
 
-    final OverlayState? overlayState = Overlay.of(context, rootOverlay: true);
-    if (overlayState == null) {
-      final bool? confirmed = await showDialog<bool>(
-        context: context,
-        barrierDismissible: false,
-        barrierColor: Colors.transparent,
-        builder: (BuildContext dialogContext) {
-          return _buildDeleteConfirmationDialog(
-            onConfirmed: (bool confirmed) =>
-                Navigator.of(dialogContext).pop(confirmed),
-          );
-        },
-      );
-
-      return confirmed ?? false;
+    if (_isSaving) {
+      _saveQueued = true;
+      return;
     }
 
-    final Completer<bool> completer = Completer<bool>();
-    late final OverlayEntry entry;
-    bool didRemove = false;
-
-    entry = OverlayEntry(
-      builder: (BuildContext overlayContext) {
-        final ValueChanged<bool> close = (bool confirmed) {
-          if (!completer.isCompleted) {
-            completer.complete(confirmed);
-          }
-          if (!didRemove && entry.mounted) {
-            didRemove = true;
-            entry.remove();
-          }
-        };
-
-        return Material(
-          color: Colors.transparent,
-          child: Stack(
-            children: [
-              const Positioned.fill(
-                child: ModalBarrier(
-                  dismissible: false,
-                  color: Color.fromARGB(140, 0, 0, 0),
-                ),
-              ),
-              Center(
-                child: ConstrainedBox(
-                  constraints: const BoxConstraints(maxWidth: 420),
-                  child: _buildDeleteConfirmationDialog(onConfirmed: close),
-                ),
-              ),
-            ],
-          ),
+    _isSaving = true;
+    try {
+      final Note saved = widget.saveNote != null
+          ? await widget.saveNote!(draft)
+          : await widget.repository!.updateNote(draft);
+      _baselineNote = saved;
+      widget.onSaved?.call(saved);
+    } catch (error) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('No se pudo guardar la nota: $error')),
         );
-      },
-    );
-
-    overlayState.insert(entry);
-    return completer.future;
-  }
-
-  Category? _categoryById(String? id) {
-    for (final Category category in widget.categories) {
-      if (category.id == id) {
-        return category;
+      }
+    } finally {
+      _isSaving = false;
+      if (_saveQueued) {
+        _saveQueued = false;
+        unawaited(_saveNow());
       }
     }
-
-    return null;
   }
 
-  Color _categoryBackgroundColor(Category? category) {
-    if (category?.colorValue == null) {
-      return Colors.white.withValues(alpha: 0.08);
-    }
-
-    return Color(category!.colorValue!);
-  }
-
-  Color _categoryForegroundColor(Category? category) {
-    if (category == null || category.colorValue == null) {
-      return Colors.white;
-    }
-
-    final Color background = Color(category.colorValue!);
-    return background.computeLuminance() > 0.55 ? Colors.black87 : Colors.white;
-  }
-
-  Widget _buildCategorySelectorBox({Category? category}) {
-    final String label = category?.name ?? 'Sin categoría';
-    final IconData icon = CategoryStyle.iconForCodePoint(category?.iconCodePoint);
-    final Color backgroundColor = _categoryBackgroundColor(category);
-    final Color foregroundColor = _categoryForegroundColor(category);
-
-    return Container(
-      key: _categorySelectorKey,
-      padding: const EdgeInsets.symmetric(horizontal: 9, vertical: 6),
-      decoration: BoxDecoration(
-        color: backgroundColor,
-        borderRadius: BorderRadius.circular(10),
-        border: Border.all(
-          color: category?.colorValue != null
-              ? backgroundColor.withValues(alpha: 0.85)
-              : Colors.white24,
-        ),
-      ),
-      child: Row(
-        mainAxisSize: MainAxisSize.min,
-        children: [
-          Icon(icon, color: foregroundColor, size: 15),
-          const SizedBox(width: 6),
-          Expanded(
-            child: Text(
-              label,
-              overflow: TextOverflow.ellipsis,
-              style: TextStyle(
-                color: foregroundColor,
-                fontSize: 12,
-                fontWeight: FontWeight.w600,
-              ),
-            ),
-          ),
-          const SizedBox(width: 6),
-          Icon(
-            Icons.arrow_drop_down,
-            color: foregroundColor.withValues(alpha: 0.9),
-            size: 16,
-          ),
-        ],
-      ),
-    );
-  }
-
-  void _closeCategoryMenu() {
-    final OverlayEntry? entry = _categoryMenuEntry;
-    if (entry != null && entry.mounted) {
-      entry.remove();
-    }
-    _categoryMenuEntry = null;
-  }
-
-  void _toggleCategoryMenu() {
-    if (_categoryMenuEntry != null) {
-      _closeCategoryMenu();
-      return;
-    }
-
-    final OverlayState? overlayState = Overlay.of(context, rootOverlay: true);
-    if (overlayState == null) {
-      return;
-    }
-
-    _categoryMenuEntry = OverlayEntry(
-      builder: (BuildContext overlayContext) {
-        final Size screenSize = MediaQuery.of(overlayContext).size;
-        final double menuWidth = math.min(screenSize.width - 32, 320);
-        final double menuHeight = math.min(screenSize.height - 32, 360);
-
-        return Material(
-          color: Colors.transparent,
-          child: Stack(
-            children: [
-              Positioned.fill(
-                child: GestureDetector(
-                  behavior: HitTestBehavior.translucent,
-                  onTap: _closeCategoryMenu,
-                  child: const SizedBox.expand(),
-                ),
-              ),
-              Center(
-                child: ConstrainedBox(
-                  constraints: BoxConstraints(
-                    maxWidth: menuWidth,
-                    maxHeight: menuHeight,
-                  ),
-                  child: Material(
-                    elevation: 10,
-                    color: const Color(0xFF303134),
-                    borderRadius: BorderRadius.circular(12),
-                    clipBehavior: Clip.antiAlias,
-                    child: ListView(
-                      padding: const EdgeInsets.symmetric(vertical: 8),
-                      shrinkWrap: true,
-                      children: [
-                        _buildCategoryMenuItem(
-                          category: null,
-                          label: 'Sin categoría',
-                          isSelected: _selectedCategoryId == null,
-                          onTap: () {
-                            setState(() {
-                              _selectedCategoryId = null;
-                            });
-                            _closeCategoryMenu();
-                          },
-                        ),
-                        for (final Category category in widget.categories)
-                          _buildCategoryMenuItem(
-                            category: category,
-                            label: category.name,
-                            isSelected: _selectedCategoryId == category.id,
-                            onTap: () {
-                              setState(() {
-                                _selectedCategoryId = category.id;
-                              });
-                              _closeCategoryMenu();
-                            },
-                          ),
-                      ],
-                    ),
-                  ),
-                ),
-              ),
-            ],
-          ),
-        );
-      },
-    );
-
-    overlayState.insert(_categoryMenuEntry!);
-  }
-
-  Widget _buildCategoryMenuItem({
-    required Category? category,
-    required String label,
-    required bool isSelected,
-    required VoidCallback onTap,
-  }) {
-    final Color backgroundColor = _categoryBackgroundColor(category);
-    final Color foregroundColor = _categoryForegroundColor(category);
-    final IconData icon = CategoryStyle.iconForCodePoint(category?.iconCodePoint);
-
-    return InkWell(
-      onTap: onTap,
-      child: Container(
-        padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
-        color: isSelected ? Colors.white.withValues(alpha: 0.08) : null,
-        child: Row(
-          children: [
-            Container(
-              width: 28,
-              height: 28,
-              decoration: BoxDecoration(
-                color: backgroundColor,
-                borderRadius: BorderRadius.circular(8),
-                border: Border.all(
-                  color: category?.colorValue != null
-                      ? backgroundColor.withValues(alpha: 0.85)
-                      : Colors.white24,
-                ),
-              ),
-              child: Icon(icon, size: 16, color: foregroundColor),
-            ),
-            const SizedBox(width: 12),
-            Expanded(
-              child: Text(
-                label,
-                overflow: TextOverflow.ellipsis,
-                style: TextStyle(
-                  color: foregroundColor,
-                  fontSize: 13,
-                  fontWeight: FontWeight.w600,
-                ),
-              ),
-            ),
-            if (isSelected)
-              Icon(Icons.check, color: foregroundColor, size: 18),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Future<void> _deleteNote() async {
-    final bool confirmed = await _showDeleteConfirmation();
-    if (!mounted || !confirmed) {
-      return;
-    }
-
-    _complete('delete');
-  }
-
-  String _formatDate(DateTime date) {
-    final DateTime now = DateTime.now();
-    final DateTime today = DateTime(now.year, now.month, now.day);
-    final DateTime yesterday = today.subtract(const Duration(days: 1));
-    final DateTime noteDate = DateTime(date.year, date.month, date.day);
-
-    if (noteDate == today) {
-      return 'Hoy ${DateFormat('HH:mm').format(date)}';
-    } else if (noteDate == yesterday) {
-      return 'Ayer ${DateFormat('HH:mm').format(date)}';
-    } else {
-      return DateFormat('dd/MM/yyyy HH:mm').format(date);
-    }
-  }
-
-  Widget _buildEditorContent({required bool isMobile}) {
-    final double titleSpacing = isMobile ? 16.0 : 8.0;
+  Widget _buildEditorBody() {
+    final AppPalette palette = _paletteOf(context);
 
     return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
       children: [
-        Container(
-          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-          decoration: BoxDecoration(
-            border: Border(bottom: BorderSide(color: Colors.white12, width: 1)),
-          ),
-          child: Row(
-            children: [
-              IconButton(
-                onPressed: _closeWithoutSaving,
-                icon: const Icon(Icons.close, color: Colors.white70),
-                tooltip: 'Cerrar sin guardar',
-              ),
-              const SizedBox(width: 8),
-              Expanded(
-                child: Column(
-                  crossAxisAlignment: CrossAxisAlignment.start,
-                  mainAxisSize: MainAxisSize.min,
-                  children: [
-                    Text(
-                      'Creado: ${_formatDate(_currentNote.createdAt)}',
-                      style: const TextStyle(
-                        color: Colors.white54,
-                        fontSize: 12,
-                      ),
-                    ),
-                    if (_currentNote.updatedAt != _currentNote.createdAt)
-                      Text(
-                        'Modificado: ${_formatDate(_currentNote.updatedAt)}',
-                        style: const TextStyle(
-                          color: Colors.white54,
-                          fontSize: 12,
-                        ),
-                      ),
-                  ],
-                ),
-              ),
-              ConstrainedBox(
-                constraints: const BoxConstraints(maxWidth: 150),
-                child: SizedBox(
-                  width: 150,
-                  child: KeyedSubtree(
-                    key: const ValueKey<String>('category_selector'),
-                    child: InkWell(
-                      onTap: _toggleCategoryMenu,
-                      borderRadius: BorderRadius.circular(12),
-                      child: _buildCategorySelectorBox(
-                        category: _categoryById(_selectedCategoryId),
-                      ),
-                    ),
-                  ),
-                ),
-              ),
-            ],
-          ),
-        ),
-        Expanded(
-          child: Padding(
-            padding: const EdgeInsets.all(20),
-            child: Column(
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                TextField(
+        Row(
+          children: [
+            Expanded(
+              child: Padding(
+                padding: const EdgeInsets.only(left: 8),
+                child: TextField(
                   controller: _titleController,
-                  style: const TextStyle(
-                    color: Colors.white,
-                    fontSize: 28,
-                    fontWeight: FontWeight.bold,
+                  style: TextStyle(
+                    color: palette.textPrimary,
+                    fontSize: 26,
+                    fontWeight: FontWeight.w700,
                   ),
-                  decoration: const InputDecoration(
+                  decoration: InputDecoration(
                     hintText: 'Título',
-                    hintStyle: TextStyle(color: Colors.white30),
+                    hintStyle: TextStyle(color: palette.textHint),
                     border: InputBorder.none,
-                    contentPadding: EdgeInsets.zero,
                   ),
                 ),
-                SizedBox(height: titleSpacing),
-                Expanded(
-                  child: TextField(
-                    controller: _bodyController,
-                    keyboardType: TextInputType.multiline,
-                    maxLines: null,
-                    expands: true,
-                    style: const TextStyle(
-                      color: Colors.white,
-                      fontSize: 16,
-                      height: 1.6,
-                    ),
-                    decoration: const InputDecoration(
-                      hintText: 'Escribe tu nota...',
-                      hintStyle: TextStyle(color: Colors.white30),
-                      border: InputBorder.none,
-                      contentPadding: EdgeInsets.zero,
-                    ),
-                  ),
-                ),
-              ],
+              ),
+            ),
+          ],
+        ),
+        const SizedBox(height: 10),
+        Expanded(
+          child: Container(
+            padding: const EdgeInsets.all(8),
+            child: QuillEditor.basic(
+              controller: _bodyController,
+              focusNode: _bodyFocusNode,
+              scrollController: _bodyScrollController,
+              config: QuillEditorConfig(
+                scrollable: true,
+                padding: EdgeInsets.zero,
+                autoFocus: false,
+                expands: true,
+                placeholder: 'Escribe tu nota...',
+                keyboardAppearance: Theme.of(context).brightness,
+              ),
             ),
           ),
         ),
-        Container(
-          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
-          decoration: BoxDecoration(
-            border: Border(top: BorderSide(color: Colors.white12, width: 1)),
-          ),
-          child: Row(
-            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-            children: [
-              if (!_isNewNote)
-                IconButton(
-                  onPressed: _deleteNote,
-                  icon: const Icon(Icons.delete_outline, color: Colors.red),
-                  tooltip: 'Eliminar nota',
-                )
-              else
-                const SizedBox(width: 48),
-              FilledButton(onPressed: _saveNote, child: const Text('Guardar')),
-            ],
+        const SizedBox(height: 8),
+        QuillSimpleToolbar(
+          controller: _bodyController,
+          config: const QuillSimpleToolbarConfig(
+            color: Colors.transparent,
+            showBoldButton: true,
+            showItalicButton: true,
+            showUnderLineButton: true,
+            showStrikeThrough: false,
+            showInlineCode: false,
+            showColorButton: false,
+            showBackgroundColorButton: false,
+            showClearFormat: false,
+            showAlignmentButtons: false,
+            showHeaderStyle: false,
+            showListNumbers: true,
+            showListBullets: true,
+            showListCheck: true,
+            showCodeBlock: false,
+            showQuote: false,
+            showIndent: false,
+            showLink: false,
+            showUndo: false,
+            showRedo: false,
+            showDividers: false,
+            showFontFamily: false,
+            showFontSize: false,
+            showDirection: false,
+            showSearchButton: false,
+            showSubscript: false,
+            showSuperscript: false,
+            multiRowsDisplay: false,
+            axis: Axis.horizontal,
           ),
         ),
       ],
@@ -672,51 +220,38 @@ class _NoteEditorScreenState extends State<NoteEditorScreen> {
 
   @override
   Widget build(BuildContext context) {
-    if (_isMobileLayout) {
-      return Material(
-        color: Colors.transparent,
-        child: SafeArea(
-          child: Container(
-            color: const Color.fromARGB(255, 24, 25, 26),
-            child: _buildEditorContent(isMobile: true),
-          ),
-        ),
-      );
+    final AppPalette palette = _paletteOf(context);
+
+    final Widget editor = Padding(
+      padding: const EdgeInsets.all(8),
+      child: _buildEditorBody(),
+    );
+
+    if (widget.embedded) {
+      return editor;
     }
 
-    return LayoutBuilder(
-      builder: (BuildContext context, BoxConstraints constraints) {
-        final double maxWidth = math.min(constraints.maxWidth - 32, 600);
-        final double maxHeight = math.min(constraints.maxHeight - 32, 720);
-
-        return Stack(
-          children: [
-            Positioned.fill(
-              child: ModalBarrier(
-                dismissible: false,
-                color: const Color.fromARGB(54, 0, 0, 0).withValues(alpha: 0.5),
-              ),
-            ),
-            Positioned.fill(
-              child: Center(
-                child: SizedBox(
-                  width: maxWidth,
-                  height: maxHeight,
-                  child: Material(
-                    color: const Color.fromRGBO(24, 25, 26, 1),
-                    shape: RoundedRectangleBorder(
-                      borderRadius: BorderRadius.circular(16),
-                      side: BorderSide(color: Colors.white24, width: 1),
-                    ),
-                    clipBehavior: Clip.antiAlias,
-                    child: _buildEditorContent(isMobile: false),
-                  ),
+    return Container(
+      decoration: BoxDecoration(gradient: palette.backdropGradient),
+      child: Scaffold(
+        backgroundColor: Colors.transparent,
+        appBar: AppBar(
+          title: const Text('Editar nota'),
+          backgroundColor: Colors.transparent,
+          elevation: 0,
+          bottom: PreferredSize(
+            preferredSize: const Size.fromHeight(1),
+            child: Container(
+              decoration: BoxDecoration(
+                border: Border(
+                  bottom: BorderSide(color: palette.border, width: 0.5),
                 ),
               ),
             ),
-          ],
-        );
-      },
+          ),
+        ),
+        body: SafeArea(child: editor),
+      ),
     );
   }
 }

lib/screens/settings_screen.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:notas/data/local_vault_service.dart';
+import 'package:notas/theme/app_palette.dart';
 import 'package:notas/widgets/search_app_bar.dart';
 import 'package:notas/data/api_client.dart';
 
@@ -11,6 +12,8 @@ class SettingsScreen extends StatefulWidget {
     required this.onForceSync,
     required this.currentSeedColor,
     required this.onThemeColorSelected,
+    required this.currentThemeMode,
+    required this.onThemeModeSelected,
   });
 
   final Future<void> Function() onDeleteAllData;
@@ -18,6 +21,8 @@ class SettingsScreen extends StatefulWidget {
   final Future<void> Function() onForceSync;
   final Color currentSeedColor;
   final Future<void> Function(Color color) onThemeColorSelected;
+  final ThemeMode currentThemeMode;
+  final Future<void> Function(ThemeMode mode) onThemeModeSelected;
 
   @override
   State<SettingsScreen> createState() => _SettingsScreenState();
@@ -29,32 +34,46 @@ class _SettingsScreenState extends State<SettingsScreen> {
   bool _isServerDeleting = false;
   bool _isThemeSaving = false;
   final TextEditingController _endpointController = TextEditingController();
-  final TextEditingController _encryptionKeyController = TextEditingController();
+  final TextEditingController _encryptionKeyController =
+      TextEditingController();
   bool _endpointLoading = true;
   bool _encryptionKeyLoading = false;
   bool _encryptionKeyVisible = false;
   late Color _selectedSeedColor;
+  late ThemeMode _selectedThemeMode;
 
-  static const List<Color> _themeColorOptions = <Color>[
-    Colors.amber,
-    Colors.blue,
-    Colors.teal,
-    Colors.green,
-    Colors.pink,
-    Colors.purple,
-  ];
+  static const List<Color> _themeColorOptions = AppPalette.themeSeedColors;
 
   Future<void> _confirmAndDeleteAll() async {
     final bool? confirmed = await showDialog<bool>(
       context: context,
-      builder: (context) => AlertDialog(
-        title: const Text('Borrar todos los datos'),
-        content: const Text('¿Estás seguro? Esta acción eliminará la base de datos local y la clave de cifrado. Asegúrate de tener una copia de seguridad si es necesario o cuenta sincronizada.'),
-        actions: [
-          TextButton(onPressed: () => Navigator.of(context).pop(false), child: const Text('Cancelar')),
-          TextButton(onPressed: () => Navigator.of(context).pop(true), child: const Text('Borrar', style: TextStyle(color: Colors.red))),
-        ],
-      ),
+      builder: (context) {
+        final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+        return AlertDialog(
+          backgroundColor: palette.cardBackground,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(12),
+            side: BorderSide(color: palette.border),
+          ),
+          title: const Text('Borrar todos los datos'),
+          content: const Text(
+            '¿Estás seguro? Esta acción eliminará la base de datos local y la clave de cifrado. Asegúrate de tener una copia de seguridad si es necesario o cuenta sincronizada.',
+          ),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Cancelar'),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(true),
+              child: Text(
+                'Borrar',
+                style: TextStyle(color: palette.destructiveAccent),
+              ),
+            ),
+          ],
+        );
+      },
     );
 
     if (confirmed != true) return;
@@ -69,7 +88,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
       if (!mounted) return;
 
       ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(content: Text('Todos los datos locales han sido eliminados.')),
+        const SnackBar(
+          content: Text('Todos los datos locales han sido eliminados.'),
+        ),
       );
     } catch (error) {
       if (!mounted) return;
@@ -77,35 +98,44 @@ class _SettingsScreenState extends State<SettingsScreen> {
         SnackBar(content: Text('Error al borrar los datos: $error')),
       );
     } finally {
-      if (!mounted) return;
-      setState(() {
-        _isBusy = false;
-      });
+      if (mounted) {
+        setState(() {
+          _isBusy = false;
+        });
+      }
     }
   }
 
   Future<void> _confirmAndDeleteServerData() async {
     final bool? confirmed = await showDialog<bool>(
       context: context,
-      builder: (context) => AlertDialog(
-        title: const Text('Borrar toda la info del servidor'),
-        content: const Text(
-          '¿Estás seguro? Esta acción eliminará toda la información almacenada en el servidor y no se puede deshacer.',
-        ),
-        actions: [
-          TextButton(
-            onPressed: () => Navigator.of(context).pop(false),
-            child: const Text('Cancelar'),
+      builder: (context) {
+        final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+        return AlertDialog(
+          backgroundColor: palette.cardBackground,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(12),
+            side: BorderSide(color: palette.border),
           ),
-          TextButton(
-            onPressed: () => Navigator.of(context).pop(true),
-            child: const Text(
-              'Borrar',
-              style: TextStyle(color: Colors.red),
+          title: const Text('Borrar toda la info del servidor'),
+          content: const Text(
+            '¿Estás seguro? Esta acción eliminará toda la información almacenada en el servidor y no se puede deshacer.',
+          ),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text('Cancelar'),
             ),
-          ),
-        ],
-      ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(true),
+              child: Text(
+                'Borrar',
+                style: TextStyle(color: palette.destructiveAccent),
+              ),
+            ),
+          ],
+        );
+      },
     );
 
     if (confirmed != true) return;
@@ -115,11 +145,13 @@ class _SettingsScreenState extends State<SettingsScreen> {
     });
 
     try {
-      final Map<String, dynamic> response =
-          await AuthApi.instance.deleteAllServerData();
+      final Map<String, dynamic> response = await AuthApi.instance
+          .deleteAllServerData();
 
       if (response['error'] == true) {
-        throw Exception(response['body'] ?? response['message'] ?? 'Error desconocido');
+        throw Exception(
+          response['body'] ?? response['message'] ?? 'Error desconocido',
+        );
       }
 
       await AuthApi.instance.clearTokens();
@@ -127,7 +159,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
       if (!mounted) return;
 
       ScaffoldMessenger.of(context).showSnackBar(
-        const SnackBar(content: Text('Toda la información del servidor ha sido eliminada.')),
+        const SnackBar(
+          content: Text('Toda la información del servidor ha sido eliminada.'),
+        ),
       );
     } catch (error) {
       if (!mounted) return;
@@ -135,10 +169,11 @@ class _SettingsScreenState extends State<SettingsScreen> {
         SnackBar(content: Text('Error al borrar la info del servidor: $error')),
       );
     } finally {
-      if (!mounted) return;
-      setState(() {
-        _isServerDeleting = false;
-      });
+      if (mounted) {
+        setState(() {
+          _isServerDeleting = false;
+        });
+      }
     }
   }
 
@@ -166,11 +201,11 @@ class _SettingsScreenState extends State<SettingsScreen> {
         SnackBar(content: Text('Error al forzar la sincronización: $error')),
       );
     } finally {
-      if (!mounted) return;
-
-      setState(() {
-        _isSyncing = false;
-      });
+      if (mounted) {
+        setState(() {
+          _isSyncing = false;
+        });
+      }
     }
   }
 
@@ -212,6 +247,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
   void initState() {
     super.initState();
     _selectedSeedColor = widget.currentSeedColor;
+    _selectedThemeMode = widget.currentThemeMode;
     _loadEndpoint();
   }
 
@@ -222,6 +258,26 @@ class _SettingsScreenState extends State<SettingsScreen> {
         widget.currentSeedColor != _selectedSeedColor) {
       _selectedSeedColor = widget.currentSeedColor;
     }
+    if (oldWidget.currentThemeMode != widget.currentThemeMode) {
+      _selectedThemeMode = widget.currentThemeMode;
+    }
+  }
+
+  Future<void> _selectThemeMode(ThemeMode mode) async {
+    if (_selectedThemeMode == mode) return;
+    setState(() {
+      _selectedThemeMode = mode;
+    });
+    try {
+      await widget.onThemeModeSelected(mode);
+    } catch (e) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text('No se pudo guardar la preferencia de tema: $e'),
+        ),
+      );
+    }
   }
 
   Future<void> _loadEndpoint() async {
@@ -239,7 +295,8 @@ class _SettingsScreenState extends State<SettingsScreen> {
     });
 
     try {
-      final String? encryptionKey = await LocalVaultService.instance.readEncryptionKey();
+      final String? encryptionKey = await LocalVaultService.instance
+          .readEncryptionKey();
 
       if (!mounted) return;
 
@@ -284,10 +341,12 @@ class _SettingsScreenState extends State<SettingsScreen> {
     required bool isLoading,
     required IconData icon,
   }) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return ElevatedButton.icon(
       style: ElevatedButton.styleFrom(
-        backgroundColor: Colors.redAccent,
-        foregroundColor: Colors.white,
+        backgroundColor: palette.destructiveAccent,
+        foregroundColor: palette.textPrimary,
         textStyle: const TextStyle(fontWeight: FontWeight.w600),
       ),
       onPressed: onPressed,
@@ -303,16 +362,17 @@ class _SettingsScreenState extends State<SettingsScreen> {
   }
 
   Widget _buildThemeColorButton(Color color) {
-    final bool isSelected = _selectedSeedColor.value == color.value;
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+    final bool isSelected = _selectedSeedColor.toARGB32() == color.toARGB32();
     final Color foregroundColor =
         ThemeData.estimateBrightnessForColor(color) == Brightness.dark
-            ? Colors.white
-            : Colors.black;
+        ? palette.textPrimary
+        : palette.textOnAccent;
 
     return Semantics(
       button: true,
       selected: isSelected,
-      label: 'Color ${color.value.toRadixString(16)}',
+      label: 'Color ${color.toARGB32().toRadixString(16)}',
       child: Tooltip(
         message: isSelected ? 'Color actual' : 'Usar este color',
         child: InkWell(
@@ -326,12 +386,12 @@ class _SettingsScreenState extends State<SettingsScreen> {
               color: color,
               borderRadius: BorderRadius.circular(12),
               border: Border.all(
-                color: isSelected ? Colors.white : Colors.white24,
+                color: isSelected ? palette.textPrimary : palette.textSecondary,
                 width: isSelected ? 2.5 : 1.2,
               ),
               boxShadow: [
                 BoxShadow(
-                  color: Colors.black.withValues(alpha: 0.25),
+                  color: palette.shadowSoft,
                   blurRadius: 8,
                   offset: const Offset(0, 3),
                 ),
@@ -341,11 +401,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
               alignment: Alignment.center,
               children: [
                 if (isSelected)
-                  Icon(
-                    Icons.check,
-                    size: 22,
-                    color: foregroundColor,
-                  ),
+                  Icon(Icons.check, size: 22, color: foregroundColor),
               ],
             ),
           ),
@@ -366,10 +422,14 @@ class _SettingsScreenState extends State<SettingsScreen> {
     try {
       await ApiConfig.setEndpoint(value);
       if (!mounted) return;
-      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Endpoint guardado')));
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(const SnackBar(content: Text('Endpoint guardado')));
     } catch (e) {
       if (!mounted) return;
-      ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error guardando endpoint: $e')));
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text('Error guardando endpoint: $e')));
     }
   }
 
@@ -378,7 +438,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
     final String endpoint = await ApiConfig.getEndpoint();
     if (!mounted) return;
     _endpointController.text = endpoint;
-    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Endpoint restaurado al valor por defecto')));
+    ScaffoldMessenger.of(context).showSnackBar(
+      const SnackBar(content: Text('Endpoint restaurado al valor por defecto')),
+    );
   }
 
   Widget _buildResponsiveInputActionsRow({
@@ -430,20 +492,13 @@ class _SettingsScreenState extends State<SettingsScreen> {
     );
   }
 
+  @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return Scaffold(
       body: Container(
-        decoration: const BoxDecoration(
-          gradient: LinearGradient(
-            colors: [
-              Color(0xFF191A1D),
-              Color(0xFF222326),
-              Color(0xFF101114),
-            ],
-            begin: Alignment.topLeft,
-            end: Alignment.bottomRight,
-          ),
-        ),
+        decoration: BoxDecoration(gradient: palette.backdropGradient),
         child: SafeArea(
           child: Column(
             children: [
@@ -455,162 +510,238 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 titleText: 'Configuración',
               ),
               Expanded(
-                child: Padding(
-                  padding: const EdgeInsets.all(16.0),
-                  child: Column(
-                    crossAxisAlignment: CrossAxisAlignment.start,
-                    children: [
-                      Row(
-                        children: [
-                          const Expanded(
-                            child: Text('Borrar datos locales:'),
-                          ),
-                          _buildDestructiveButton(
-                            label: 'Borrar',
-                            onPressed: (_isBusy || _isServerDeleting)
-                                ? null
-                                : _confirmAndDeleteAll,
-                            isLoading: _isBusy,
-                            icon: Icons.delete_forever,
-                          ),
-                        ],
-                      ),
-                      const SizedBox(height: 16),
-                      Row(
-                        children: [
-                          const Expanded(
-                            child: Text('Borrar info del servidor:'),
-                          ),
-                          _buildDestructiveButton(
-                            label: 'Borrar',
-                            onPressed: (_isBusy || _isSyncing || _isServerDeleting)
-                                ? null
-                                : _confirmAndDeleteServerData,
-                            isLoading: _isServerDeleting,
-                            icon: Icons.cloud_off,
-                          ),
-                        ],
-                      ),
-                      const SizedBox(height: 16),
-                      Row(
-                        children: [
-                          const Expanded(
-                            child: Text('Forzar sincronizacion total:'),
-                          ),
-                          ElevatedButton.icon(
-                            onPressed: (_isBusy || _isSyncing || _isServerDeleting)
-                                ? null
-                                : _forceSync,
-                            icon: _isSyncing
-                                ? const SizedBox(
-                                    width: 16,
-                                    height: 16,
-                                    child: CircularProgressIndicator(strokeWidth: 2),
-                                  )
-                                : const Icon(Icons.sync),
-                            label: const Text('Sincronizar'),
-                          ),
-                        ],
-                      ),
-                      const SizedBox(height: 24),
-                      const Text('Color del esquema'),
-                      const SizedBox(height: 8),
-                      Wrap(
-                        spacing: 12,
-                        runSpacing: 12,
-                        children: [
-                          for (final Color color in _themeColorOptions)
-                            _buildThemeColorButton(color),
-                        ],
-                      ),
-                      const SizedBox(height: 24),
-                      const Text('API endpoint (ej: https://notas-api.lpncnd.es/api)'),
-                      const SizedBox(height: 8),
-                      _buildResponsiveInputActionsRow(
-                        input: _endpointLoading
-                            ? const SizedBox(height: 48, child: Center(child: CircularProgressIndicator()))
-                            : TextField(
-                                controller: _endpointController,
-                                style: const TextStyle(color: Colors.white),
-                                keyboardType: TextInputType.url,
-                                decoration: InputDecoration(
-                                  labelText: 'API endpoint',
-                                  labelStyle: TextStyle(color: Colors.white.withValues(alpha: 0.7)),
-                                  filled: true,
-                                  fillColor: Colors.white.withValues(alpha: 0.05),
-                                  border: OutlineInputBorder(
-                                    borderRadius: BorderRadius.circular(14),
-                                    borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                child: SingleChildScrollView(
+                  physics: const BouncingScrollPhysics(),
+                  child: Padding(
+                    padding: const EdgeInsets.all(16.0),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Row(
+                          children: [
+                            const Expanded(
+                              child: Text('Borrar datos locales:'),
+                            ),
+                            _buildDestructiveButton(
+                              label: 'Borrar',
+                              onPressed: (_isBusy || _isServerDeleting)
+                                  ? null
+                                  : _confirmAndDeleteAll,
+                              isLoading: _isBusy,
+                              icon: Icons.delete_forever,
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 16),
+                        Row(
+                          children: [
+                            const Expanded(
+                              child: Text('Borrar info del servidor:'),
+                            ),
+                            _buildDestructiveButton(
+                              label: 'Borrar',
+                              onPressed:
+                                  (_isBusy || _isSyncing || _isServerDeleting)
+                                  ? null
+                                  : _confirmAndDeleteServerData,
+                              isLoading: _isServerDeleting,
+                              icon: Icons.cloud_off,
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 16),
+                        Row(
+                          children: [
+                            const Expanded(
+                              child: Text('Forzar sincronizacion total:'),
+                            ),
+                            ElevatedButton.icon(
+                              onPressed:
+                                  (_isBusy || _isSyncing || _isServerDeleting)
+                                  ? null
+                                  : _forceSync,
+                              icon: _isSyncing
+                                  ? const SizedBox(
+                                      width: 16,
+                                      height: 16,
+                                      child: CircularProgressIndicator(
+                                        strokeWidth: 2,
+                                      ),
+                                    )
+                                  : const Icon(Icons.sync),
+                              label: const Text('Sincronizar'),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 24),
+                        const Text('Apariencia'),
+                        const SizedBox(height: 8),
+                        Column(
+                          children: [
+                            RadioGroup<ThemeMode>(
+                              groupValue: _selectedThemeMode,
+                              onChanged: (ThemeMode? v) {
+                                if (v != null) {
+                                  _selectThemeMode(v);
+                                }
+                              },
+                              child: Column(
+                                children: [
+                                  RadioListTile<ThemeMode>(
+                                    title: const Text(
+                                      'Seguir modo del sistema',
+                                    ),
+                                    value: ThemeMode.system,
                                   ),
-                                  enabledBorder: OutlineInputBorder(
-                                    borderRadius: BorderRadius.circular(14),
-                                    borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                  RadioListTile<ThemeMode>(
+                                    title: const Text('Modo claro'),
+                                    value: ThemeMode.light,
                                   ),
-                                  focusedBorder: OutlineInputBorder(
-                                    borderRadius: BorderRadius.circular(14),
-                                    borderSide: const BorderSide(color: Colors.amber, width: 1.2),
+                                  RadioListTile<ThemeMode>(
+                                    title: const Text('Modo oscuro'),
+                                    value: ThemeMode.dark,
                                   ),
-                                ),
+                                ],
                               ),
-                        actions: [
-                          ElevatedButton(
-                            onPressed: _endpointLoading ? null : _saveEndpoint,
-                            child: const Text('Guardar'),
-                          ),
-                          OutlinedButton(
-                            onPressed: _endpointLoading ? null : _resetEndpoint,
-                            child: const Text('Restaurar'),
-                          ),
-                        ],
-                      ),
-                      const SizedBox(height: 24),
-                      const Text('Clave de cifrado local'),
-                      const SizedBox(height: 8),
-                      _buildResponsiveInputActionsRow(
-                        input: TextField(
-                          controller: _encryptionKeyController,
-                          readOnly: true,
-                          obscureText: !_encryptionKeyVisible,
-                          enableSuggestions: false,
-                          autocorrect: false,
-                          style: const TextStyle(color: Colors.white),
-                          decoration: InputDecoration(
-                            labelText: _encryptionKeyVisible ? 'Clave de cifrado' : 'Oculta hasta pulsar mostrar',
-                            labelStyle: TextStyle(color: Colors.white.withValues(alpha: 0.7)),
-                            filled: true,
-                            fillColor: Colors.white.withValues(alpha: 0.05),
-                            border: OutlineInputBorder(
-                              borderRadius: BorderRadius.circular(14),
-                              borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
-                            ),
-                            enabledBorder: OutlineInputBorder(
-                              borderRadius: BorderRadius.circular(14),
-                              borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
-                            ),
-                            focusedBorder: OutlineInputBorder(
-                              borderRadius: BorderRadius.circular(14),
-                              borderSide: const BorderSide(color: Colors.amber, width: 1.2),
                             ),
+                          ],
+                        ),
+                        const SizedBox(height: 16),
+                        const Text('Color del esquema'),
+                        const SizedBox(height: 8),
+                        Padding(
+                          padding: const EdgeInsets.only(left: 4),
+                          child: Wrap(
+                            spacing: 12,
+                            runSpacing: 12,
+                            children: [
+                              for (final Color color in _themeColorOptions)
+                                _buildThemeColorButton(color),
+                            ],
                           ),
                         ),
-                        actions: [
-                          ElevatedButton(
-                            onPressed: _encryptionKeyLoading ? null : _loadEncryptionKey,
-                            child: _encryptionKeyLoading
-                                ? const SizedBox(
-                                    width: 16,
-                                    height: 16,
-                                    child: CircularProgressIndicator(strokeWidth: 2),
-                                  )
-                                : const Text('Mostrar'),
+                        const SizedBox(height: 24),
+                        const Text(
+                          'API endpoint (ej: https://notas-api.lpncnd.es/api)',
+                        ),
+                        const SizedBox(height: 8),
+                        _buildResponsiveInputActionsRow(
+                          input: _endpointLoading
+                              ? const SizedBox(
+                                  height: 48,
+                                  child: Center(
+                                    child: CircularProgressIndicator(),
+                                  ),
+                                )
+                              : TextField(
+                                  controller: _endpointController,
+                                  style: TextStyle(color: palette.textPrimary),
+                                  keyboardType: TextInputType.url,
+                                  decoration: InputDecoration(
+                                    labelText: 'API endpoint',
+                                    labelStyle: TextStyle(
+                                      color: palette.textSecondary,
+                                    ),
+                                    filled: true,
+                                    fillColor: palette.fill,
+                                    border: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(14),
+                                      borderSide: BorderSide(
+                                        color: palette.border,
+                                      ),
+                                    ),
+                                    enabledBorder: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(14),
+                                      borderSide: BorderSide(
+                                        color: palette.border,
+                                      ),
+                                    ),
+                                    focusedBorder: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(14),
+                                      borderSide: BorderSide(
+                                        color: palette.accent,
+                                        width: 1.2,
+                                      ),
+                                    ),
+                                  ),
+                                ),
+                          actions: [
+                            ElevatedButton(
+                              onPressed: _endpointLoading
+                                  ? null
+                                  : _saveEndpoint,
+                              child: const Text('Guardar'),
+                            ),
+                            OutlinedButton(
+                              onPressed: _endpointLoading
+                                  ? null
+                                  : _resetEndpoint,
+                              child: const Text('Restaurar'),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 24),
+                        const Text('Clave de cifrado local'),
+                        const SizedBox(height: 8),
+                        _buildResponsiveInputActionsRow(
+                          input: TextField(
+                            controller: _encryptionKeyController,
+                            readOnly: true,
+                            obscureText: !_encryptionKeyVisible,
+                            enableSuggestions: false,
+                            autocorrect: false,
+                            style: TextStyle(color: palette.textPrimary),
+                            decoration: InputDecoration(
+                              labelText: _encryptionKeyVisible
+                                  ? 'Clave de cifrado'
+                                  : 'Oculta hasta pulsar mostrar',
+                              labelStyle: TextStyle(
+                                color: palette.textSecondary,
+                              ),
+                              filled: true,
+                              fillColor: palette.fill,
+                              border: OutlineInputBorder(
+                                borderRadius: BorderRadius.circular(14),
+                                borderSide: BorderSide(color: palette.border),
+                              ),
+                              enabledBorder: OutlineInputBorder(
+                                borderRadius: BorderRadius.circular(14),
+                                borderSide: BorderSide(color: palette.border),
+                              ),
+                              focusedBorder: OutlineInputBorder(
+                                borderRadius: BorderRadius.circular(14),
+                                borderSide: BorderSide(
+                                  color: palette.accent,
+                                  width: 1.2,
+                                ),
+                              ),
+                            ),
                           ),
-                          OutlinedButton(
-                            onPressed: _encryptionKeyVisible ? _hideEncryptionKey : null,
-                            child: const Text('Ocultar'),
-                          ),
-                        ],
-                      ),
-                    ],
+                          actions: [
+                            ElevatedButton(
+                              onPressed: _encryptionKeyLoading
+                                  ? null
+                                  : _loadEncryptionKey,
+                              child: _encryptionKeyLoading
+                                  ? const SizedBox(
+                                      width: 16,
+                                      height: 16,
+                                      child: CircularProgressIndicator(
+                                        strokeWidth: 2,
+                                      ),
+                                    )
+                                  : const Text('Mostrar'),
+                            ),
+                            OutlinedButton(
+                              onPressed: _encryptionKeyVisible
+                                  ? _hideEncryptionKey
+                                  : null,
+                              child: const Text('Ocultar'),
+                            ),
+                          ],
+                        ),
+                      ],
+                    ),
                   ),
                 ),
               ),

lib/screens/vault_access_screen.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:notas/data/api_client.dart';
+import 'package:notas/theme/app_palette.dart';
 
 class VaultAccessScreen extends StatefulWidget {
   const VaultAccessScreen({
@@ -11,7 +12,8 @@ class VaultAccessScreen extends StatefulWidget {
   });
 
   final bool isBusy;
-  final Future<void> Function(String email, String password) onCreateAccountPressed;
+  final Future<void> Function(String email, String password)
+  onCreateAccountPressed;
   final Future<void> Function(String email, String password) onSignInPressed;
   final Future<void> Function() onContinueWithoutAccount;
 
@@ -73,19 +75,11 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return Scaffold(
       body: Container(
-        decoration: const BoxDecoration(
-          gradient: LinearGradient(
-            colors: [
-              Color(0xFF191A1D),
-              Color(0xFF222326),
-              Color(0xFF101114),
-            ],
-            begin: Alignment.topLeft,
-            end: Alignment.bottomRight,
-          ),
-        ),
+        decoration: BoxDecoration(gradient: palette.backdropGradient),
         child: SafeArea(
           child: Column(
             children: [
@@ -98,12 +92,12 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                       child: Container(
                         padding: const EdgeInsets.all(24),
                         decoration: BoxDecoration(
-                          color: const Color(0xFF1D1E20),
+                          color: palette.cardBackground,
                           borderRadius: BorderRadius.circular(24),
-                          border: Border.all(color: Colors.white.withValues(alpha: 0.08)),
+                          border: Border.all(color: palette.border),
                           boxShadow: [
                             BoxShadow(
-                              color: Colors.black.withValues(alpha: 0.35),
+                              color: palette.shadowSoft,
                               blurRadius: 30,
                               offset: const Offset(0, 18),
                             ),
@@ -115,7 +109,7 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                           children: [
                             const Icon(
                               Icons.lock_outline,
-                              color: Colors.amber,
+                              color: Colors.white,
                               size: 44,
                             ),
                             const SizedBox(height: 16),
@@ -133,7 +127,7 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                               'Tus notas se guardan cifradas en este dispositivo. La cuenta y la sincronización vendrán después.',
                               textAlign: TextAlign.center,
                               style: TextStyle(
-                                color: Colors.white.withValues(alpha: 0.72),
+                                color: palette.textSecondary,
                                 height: 1.4,
                               ),
                             ),
@@ -141,7 +135,9 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                             _endpointLoading
                                 ? const SizedBox(
                                     height: 48,
-                                    child: Center(child: CircularProgressIndicator()),
+                                    child: Center(
+                                      child: CircularProgressIndicator(),
+                                    ),
                                   )
                                 : TextField(
                                     controller: _endpointController,
@@ -150,20 +146,29 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                                     style: const TextStyle(color: Colors.white),
                                     decoration: InputDecoration(
                                       labelText: 'API endpoint',
-                                      labelStyle: TextStyle(color: Colors.white.withValues(alpha: 0.7)),
+                                      labelStyle: TextStyle(
+                                        color: palette.textSecondary,
+                                      ),
                                       filled: true,
-                                      fillColor: Colors.white.withValues(alpha: 0.05),
+                                      fillColor: palette.fill,
                                       border: OutlineInputBorder(
                                         borderRadius: BorderRadius.circular(14),
-                                        borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                        borderSide: BorderSide(
+                                          color: palette.border,
+                                        ),
                                       ),
                                       enabledBorder: OutlineInputBorder(
                                         borderRadius: BorderRadius.circular(14),
-                                        borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                        borderSide: BorderSide(
+                                          color: palette.border,
+                                        ),
                                       ),
                                       focusedBorder: OutlineInputBorder(
                                         borderRadius: BorderRadius.circular(14),
-                                        borderSide: const BorderSide(color: Colors.amber, width: 1.2),
+                                        borderSide: BorderSide(
+                                          color: palette.accent,
+                                          width: 1.2,
+                                        ),
                                       ),
                                     ),
                                   ),
@@ -175,20 +180,25 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                               style: const TextStyle(color: Colors.white),
                               decoration: InputDecoration(
                                 labelText: 'Usuario',
-                                labelStyle: TextStyle(color: Colors.white.withValues(alpha: 0.7)),
+                                labelStyle: TextStyle(
+                                  color: palette.textSecondary,
+                                ),
                                 filled: true,
-                                fillColor: Colors.white.withValues(alpha: 0.05),
+                                fillColor: palette.fill,
                                 border: OutlineInputBorder(
                                   borderRadius: BorderRadius.circular(14),
-                                  borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                  borderSide: BorderSide(color: palette.border),
                                 ),
                                 enabledBorder: OutlineInputBorder(
                                   borderRadius: BorderRadius.circular(14),
-                                  borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                  borderSide: BorderSide(color: palette.border),
                                 ),
                                 focusedBorder: OutlineInputBorder(
                                   borderRadius: BorderRadius.circular(14),
-                                  borderSide: const BorderSide(color: Colors.amber, width: 1.2),
+                                  borderSide: BorderSide(
+                                    color: palette.accent,
+                                    width: 1.2,
+                                  ),
                                 ),
                               ),
                             ),
@@ -200,34 +210,45 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                               style: const TextStyle(color: Colors.white),
                               decoration: InputDecoration(
                                 labelText: 'Contraseña',
-                                labelStyle: TextStyle(color: Colors.white.withValues(alpha: 0.7)),
+                                labelStyle: TextStyle(
+                                  color: palette.textSecondary,
+                                ),
                                 filled: true,
-                                fillColor: Colors.white.withValues(alpha: 0.05),
+                                fillColor: palette.fill,
                                 border: OutlineInputBorder(
                                   borderRadius: BorderRadius.circular(14),
-                                  borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                  borderSide: BorderSide(color: palette.border),
                                 ),
                                 enabledBorder: OutlineInputBorder(
                                   borderRadius: BorderRadius.circular(14),
-                                  borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.12)),
+                                  borderSide: BorderSide(color: palette.border),
                                 ),
                                 focusedBorder: OutlineInputBorder(
                                   borderRadius: BorderRadius.circular(14),
-                                  borderSide: const BorderSide(color: Colors.amber, width: 1.2),
+                                  borderSide: BorderSide(
+                                    color: palette.accent,
+                                    width: 1.2,
+                                  ),
                                 ),
                               ),
                             ),
                             const SizedBox(height: 22),
                             FilledButton(
-                              onPressed: widget.isBusy ? null : _handleCreateAccount,
+                              onPressed: widget.isBusy
+                                  ? null
+                                  : _handleCreateAccount,
                               style: FilledButton.styleFrom(
-                                padding: const EdgeInsets.symmetric(vertical: 14),
+                                padding: const EdgeInsets.symmetric(
+                                  vertical: 14,
+                                ),
                               ),
                               child: widget.isBusy
                                   ? const SizedBox(
                                       width: 18,
                                       height: 18,
-                                      child: CircularProgressIndicator(strokeWidth: 2),
+                                      child: CircularProgressIndicator(
+                                        strokeWidth: 2,
+                                      ),
                                     )
                                   : const Text('Crear cuenta'),
                             ),
@@ -235,15 +256,19 @@ class _VaultAccessScreenState extends State<VaultAccessScreen> {
                             OutlinedButton(
                               onPressed: widget.isBusy ? null : _handleSignIn,
                               style: OutlinedButton.styleFrom(
-                                padding: const EdgeInsets.symmetric(vertical: 14),
-                                side: const BorderSide(color: Colors.white24),
-                                foregroundColor: Colors.white,
+                                padding: const EdgeInsets.symmetric(
+                                  vertical: 14,
+                                ),
+                                side: BorderSide(color: palette.border),
+                                foregroundColor: palette.textPrimary,
                               ),
                               child: const Text('Iniciar sesión'),
                             ),
                             const SizedBox(height: 18),
                             TextButton(
-                              onPressed: widget.isBusy ? null : widget.onContinueWithoutAccount,
+                              onPressed: widget.isBusy
+                                  ? null
+                                  : widget.onContinueWithoutAccount,
                               child: const Text('Entrar sin cuenta'),
                             ),
                           ],

lib/theme/app_palette.dart

@@ -0,0 +1,303 @@
+import 'package:flutter/material.dart';
+
+@immutable
+class AppPalette extends ThemeExtension<AppPalette> {
+  static const Color darkDefaultThemeSeedColor = Colors.amber;
+  static const Color lightDefaultThemeSeedColor = Colors.blue;
+
+  static const List<Color> defaultCategoryColors = <Color>[
+    Colors.amber,
+    Colors.blue,
+    Colors.green,
+    Colors.purple,
+    Colors.red,
+    Colors.teal,
+    Colors.orange,
+    Colors.grey,
+  ];
+
+  static const List<Color> themeSeedColors = <Color>[
+    Colors.blue,
+    Colors.teal,
+    Colors.green,
+    Colors.pink,
+    Colors.purple,
+    Colors.orange,
+  ];
+
+  const AppPalette({
+    required this.backdropGradient,
+    required this.drawerBackground,
+    required this.cardBackground,
+    required this.categoryColors,
+    required this.surfaceElevated,
+    required this.border,
+    required this.borderMuted,
+    required this.accent,
+    required this.textPrimary,
+    required this.textSecondary,
+    required this.textOnSurfaceDark,
+    required this.textMuted,
+    required this.textDisabled,
+    required this.textHint,
+    required this.fill,
+    required this.hover,
+    required this.shadowSoft,
+    required this.shadowDim,
+    required this.destructiveAccent,
+    required this.textOnAccent,
+    required this.overlay,
+    required this.transparent,
+    required this.dragTargetBorder,
+    required this.syncPreparing,
+    required this.syncEncrypting,
+    required this.syncUploading,
+    required this.syncWaiting,
+    required this.syncDecrypting,
+    required this.success,
+  });
+
+  final Gradient backdropGradient;
+  final Color drawerBackground;
+  final Color cardBackground;
+  final List<Color> categoryColors;
+  final Color surfaceElevated;
+  final Color border;
+  final Color borderMuted;
+  final Color accent;
+  final Color textPrimary;
+  final Color textSecondary;
+  final Color textOnSurfaceDark;
+  final Color textMuted;
+  final Color textDisabled;
+  final Color textHint;
+  final Color fill;
+  final Color hover;
+  final Color shadowSoft;
+  final Color shadowDim;
+  final Color destructiveAccent;
+  final Color textOnAccent;
+  final Color overlay;
+  final Color transparent;
+  final Color dragTargetBorder;
+  final Color syncPreparing;
+  final Color syncEncrypting;
+  final Color syncUploading;
+  final Color syncWaiting;
+  final Color syncDecrypting;
+  final Color success;
+
+  @override
+  AppPalette copyWith({
+    Gradient? backdropGradient,
+    Color? drawerBackground,
+    Color? cardBackground,
+    List<Color>? categoryColors,
+    Color? surfaceElevated,
+    Color? border,
+    Color? borderMuted,
+    Color? accent,
+    Color? textPrimary,
+    Color? textSecondary,
+    Color? textOnSurfaceDark,
+    Color? textMuted,
+    Color? textDisabled,
+    Color? textHint,
+    Color? fill,
+    Color? hover,
+    Color? shadowSoft,
+    Color? shadowDim,
+    Color? destructiveAccent,
+    Color? textOnAccent,
+    Color? overlay,
+    Color? transparent,
+    Color? dragTargetBorder,
+    Color? syncPreparing,
+    Color? syncEncrypting,
+    Color? syncUploading,
+    Color? syncWaiting,
+    Color? syncDecrypting,
+    Color? success,
+  }) {
+    return AppPalette(
+      backdropGradient: backdropGradient ?? this.backdropGradient,
+      drawerBackground: drawerBackground ?? this.drawerBackground,
+      cardBackground: cardBackground ?? this.cardBackground,
+      categoryColors: categoryColors ?? this.categoryColors,
+      surfaceElevated: surfaceElevated ?? this.surfaceElevated,
+      border: border ?? this.border,
+      borderMuted: borderMuted ?? this.borderMuted,
+      accent: accent ?? this.accent,
+      textPrimary: textPrimary ?? this.textPrimary,
+      textSecondary: textSecondary ?? this.textSecondary,
+      textOnSurfaceDark: textOnSurfaceDark ?? this.textOnSurfaceDark,
+      textMuted: textMuted ?? this.textMuted,
+      textDisabled: textDisabled ?? this.textDisabled,
+      textHint: textHint ?? this.textHint,
+      fill: fill ?? this.fill,
+      hover: hover ?? this.hover,
+      shadowSoft: shadowSoft ?? this.shadowSoft,
+      shadowDim: shadowDim ?? this.shadowDim,
+      destructiveAccent: destructiveAccent ?? this.destructiveAccent,
+      textOnAccent: textOnAccent ?? this.textOnAccent,
+      overlay: overlay ?? this.overlay,
+      transparent: transparent ?? this.transparent,
+      dragTargetBorder: dragTargetBorder ?? this.dragTargetBorder,
+      syncPreparing: syncPreparing ?? this.syncPreparing,
+      syncEncrypting: syncEncrypting ?? this.syncEncrypting,
+      syncUploading: syncUploading ?? this.syncUploading,
+      syncWaiting: syncWaiting ?? this.syncWaiting,
+      syncDecrypting: syncDecrypting ?? this.syncDecrypting,
+      success: success ?? this.success,
+    );
+  }
+
+  @override
+  AppPalette lerp(ThemeExtension<AppPalette>? other, double t) {
+    if (other is! AppPalette) return this;
+    return AppPalette(
+      backdropGradient:
+          LinearGradient.lerp(
+            backdropGradient as LinearGradient,
+            other.backdropGradient as LinearGradient,
+            t,
+          ) ??
+          backdropGradient,
+      drawerBackground:
+          Color.lerp(drawerBackground, other.drawerBackground, t) ??
+          drawerBackground,
+      cardBackground:
+          Color.lerp(cardBackground, other.cardBackground, t) ?? cardBackground,
+      categoryColors: t < 0.5 ? categoryColors : other.categoryColors,
+      surfaceElevated:
+          Color.lerp(surfaceElevated, other.surfaceElevated, t) ??
+          surfaceElevated,
+      border: Color.lerp(border, other.border, t) ?? border,
+      borderMuted: Color.lerp(borderMuted, other.borderMuted, t) ?? borderMuted,
+      accent: Color.lerp(accent, other.accent, t) ?? accent,
+      textPrimary: Color.lerp(textPrimary, other.textPrimary, t) ?? textPrimary,
+      textSecondary:
+          Color.lerp(textSecondary, other.textSecondary, t) ?? textSecondary,
+      textOnSurfaceDark:
+          Color.lerp(textOnSurfaceDark, other.textOnSurfaceDark, t) ??
+          textOnSurfaceDark,
+      textMuted: Color.lerp(textMuted, other.textMuted, t) ?? textMuted,
+      textDisabled:
+          Color.lerp(textDisabled, other.textDisabled, t) ?? textDisabled,
+      textHint: Color.lerp(textHint, other.textHint, t) ?? textHint,
+      fill: Color.lerp(fill, other.fill, t) ?? fill,
+      hover: Color.lerp(hover, other.hover, t) ?? hover,
+      shadowSoft: Color.lerp(shadowSoft, other.shadowSoft, t) ?? shadowSoft,
+      shadowDim: Color.lerp(shadowDim, other.shadowDim, t) ?? shadowDim,
+      destructiveAccent:
+          Color.lerp(destructiveAccent, other.destructiveAccent, t) ??
+          destructiveAccent,
+      textOnAccent:
+          Color.lerp(textOnAccent, other.textOnAccent, t) ?? textOnAccent,
+      overlay: Color.lerp(overlay, other.overlay, t) ?? overlay,
+      transparent: Color.lerp(transparent, other.transparent, t) ?? transparent,
+      dragTargetBorder:
+          Color.lerp(dragTargetBorder, other.dragTargetBorder, t) ??
+          dragTargetBorder,
+      syncPreparing:
+          Color.lerp(syncPreparing, other.syncPreparing, t) ?? syncPreparing,
+      syncEncrypting:
+          Color.lerp(syncEncrypting, other.syncEncrypting, t) ?? syncEncrypting,
+      syncUploading:
+          Color.lerp(syncUploading, other.syncUploading, t) ?? syncUploading,
+      syncWaiting: Color.lerp(syncWaiting, other.syncWaiting, t) ?? syncWaiting,
+      syncDecrypting:
+          Color.lerp(syncDecrypting, other.syncDecrypting, t) ?? syncDecrypting,
+      success: Color.lerp(success, other.success, t) ?? success,
+    );
+  }
+
+  static AppPalette fromBrightness(Brightness brightness, {Color? seedColor}) {
+    final bool isLight = brightness == Brightness.light;
+    return AppPalette(
+      backdropGradient: isLight
+          ? const LinearGradient(
+              colors: <Color>[
+                Color(0xFFFFFFFF),
+                Color(0xFFF2F4F6),
+                Color(0xFFECEFF1),
+              ],
+              begin: Alignment.topLeft,
+              end: Alignment.bottomRight,
+            )
+          : const LinearGradient(
+              colors: <Color>[
+                Color(0xFF191A1D),
+                Color(0xFF222326),
+                Color(0xFF101114),
+              ],
+              begin: Alignment.topLeft,
+              end: Alignment.bottomRight,
+            ),
+      drawerBackground: isLight
+          ? const Color(0xFFF7F9FA)
+          : const Color.fromARGB(255, 30, 31, 35),
+      cardBackground: isLight
+          ? const Color(0xFFFFFFFF)
+          : const Color.fromRGBO(24, 25, 26, 1),
+      categoryColors: defaultCategoryColors,
+      surfaceElevated: isLight
+          ? const Color(0xFFF0F2F4)
+          : const Color(0xFF303134),
+      border: isLight
+          ? const Color.fromRGBO(15, 23, 32, 0.06)
+          : const Color.fromRGBO(255, 255, 255, 0.12),
+      borderMuted: isLight
+          ? const Color.fromRGBO(15, 23, 32, 0.03)
+          : const Color.fromRGBO(255, 255, 255, 0.08),
+      accent:
+          seedColor ??
+          (isLight
+              ? AppPalette.lightDefaultThemeSeedColor
+              : AppPalette.darkDefaultThemeSeedColor),
+      textPrimary: isLight ? const Color(0xFF0F1720) : Colors.white,
+      textSecondary: isLight ? const Color(0xFF374151) : Colors.white70,
+      textOnSurfaceDark: isLight ? Colors.black87 : Colors.black87,
+      textMuted: isLight ? const Color(0xFF6B7280) : Colors.white54,
+      textDisabled: isLight ? const Color(0xFFBDBDBD) : Colors.white24,
+      textHint: isLight
+          ? const Color.fromRGBO(15, 23, 32, 0.30)
+          : const Color.fromRGBO(255, 255, 255, 0.30),
+      fill: isLight
+          ? const Color.fromRGBO(15, 23, 32, 0.02)
+          : const Color.fromRGBO(255, 255, 255, 0.05),
+      hover: isLight
+          ? const Color.fromRGBO(15, 23, 32, 0.04)
+          : const Color.fromRGBO(255, 255, 255, 0.10),
+      shadowSoft: isLight
+          ? const Color.fromRGBO(0, 0, 0, 0.08)
+          : const Color.fromRGBO(0, 0, 0, 0.25),
+      shadowDim: isLight
+          ? const Color.fromARGB(40, 0, 0, 0)
+          : const Color.fromARGB(54, 0, 0, 0),
+      destructiveAccent: Colors.redAccent,
+      textOnAccent: isLight ? Colors.white : Colors.black,
+      overlay: isLight
+          ? const Color.fromARGB(120, 0, 0, 0)
+          : const Color.fromARGB(140, 0, 0, 0),
+      transparent: Colors.transparent,
+      dragTargetBorder: isLight
+          ? const Color(0xFF1565C0)
+          : const Color(0xFF42A5F5),
+      syncPreparing: isLight
+          ? const Color.fromARGB(255, 120, 120, 120)
+          : const Color.fromARGB(255, 165, 165, 165),
+      syncEncrypting: isLight
+          ? const Color.fromARGB(255, 2, 136, 209)
+          : const Color.fromARGB(255, 109, 191, 255),
+      syncUploading: isLight
+          ? const Color.fromARGB(255, 2, 119, 189)
+          : const Color.fromARGB(255, 98, 190, 255),
+      syncWaiting: const Color.fromARGB(255, 150, 150, 150),
+      syncDecrypting: isLight
+          ? const Color.fromARGB(255, 76, 175, 80)
+          : const Color.fromARGB(255, 154, 194, 112),
+      success: Colors.green,
+    );
+  }
+}

lib/theme/app_theme.dart

@@ -1,19 +1,33 @@
 import 'package:flutter/material.dart';
+import 'package:notas/theme/app_palette.dart';
 
 class AppTheme {
-  static ThemeData theme({Color seedColor = Colors.amber}) {
+  static ThemeData theme({
+    Color seedColor = Colors.amber,
+    Brightness brightness = Brightness.dark,
+  }) {
     final Brightness foregroundBrightness =
         ThemeData.estimateBrightnessForColor(seedColor);
-    final Color foregroundColor =
-        foregroundBrightness == Brightness.dark ? Colors.white : Colors.black;
+    final Color foregroundColor = foregroundBrightness == Brightness.dark
+        ? Colors.white
+        : Colors.black87;
+
+    final ColorScheme scheme = ColorScheme.fromSeed(
+      seedColor: seedColor,
+      brightness: brightness,
+    );
+
+    final AppPalette palette = AppPalette.fromBrightness(
+      brightness,
+      seedColor: seedColor,
+    );
 
     return ThemeData(
       useMaterial3: true,
-      scaffoldBackgroundColor: const Color.fromRGBO(31, 32, 33, 1),
-      colorScheme: ColorScheme.fromSeed(
-        seedColor: seedColor,
-        brightness: Brightness.dark,
-      ),
+      scaffoldBackgroundColor: scheme.surface,
+      colorScheme: scheme,
+      extensions: <ThemeExtension<dynamic>>[palette],
+      brightness: brightness,
       floatingActionButtonTheme: FloatingActionButtonThemeData(
         backgroundColor: seedColor,
         foregroundColor: foregroundColor,

lib/widgets/category_style.dart

@@ -1,18 +1,19 @@
 import 'package:flutter/material.dart';
+import 'package:notas/theme/app_palette.dart';
 
 class CategoryStyle {
   CategoryStyle._();
 
-  static const List<Color> colors = <Color>[
-    Colors.amber,
-    Colors.blue,
-    Colors.green,
-    Colors.purple,
-    Colors.red,
-    Colors.teal,
-    Colors.orange,
-    Colors.grey,
-  ];
+  static const List<Color> colors = AppPalette.defaultCategoryColors;
+
+  static List<Color> colorsOf(BuildContext context) {
+    final AppPalette? palette = Theme.of(context).extension<AppPalette>();
+    if (palette != null) {
+      return palette.categoryColors;
+    }
+
+    return AppPalette.defaultCategoryColors;
+  }
 
   static const List<IconData> icons = <IconData>[
     Icons.label_outline_rounded,

lib/widgets/menu_drawer.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:notas/models/category.dart';
+import 'package:notas/theme/app_palette.dart';
 import 'package:notas/widgets/category_style.dart';
 
 class MenuDrawer extends StatelessWidget {
@@ -20,12 +21,12 @@ class MenuDrawer extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return Container(
-      decoration: const BoxDecoration(
-        color: Color.fromARGB(255, 30, 31, 35),
-        border: Border(
-          right: BorderSide(color: Colors.white12, width: 0.5),
-        ),
+      decoration: BoxDecoration(
+        color: palette.drawerBackground,
+        border: Border(right: BorderSide(color: palette.border, width: 0.5)),
       ),
       child: Column(
         children: [
@@ -59,17 +60,21 @@ class MenuDrawer extends StatelessWidget {
                             onLongPress: onEditCategory == null
                                 ? null
                                 : () => onEditCategory?.call(category),
-                            iconColor: Color(category.colorValue ?? 0xFFFFC107),
-                            textColor: Color(category.colorValue ?? 0xFFFFC107),
+                            iconColor: Color(
+                              category.colorValue ?? palette.accent.toARGB32(),
+                            ),
+                            textColor: Color(
+                              category.colorValue ?? palette.accent.toARGB32(),
+                            ),
                             trailing: IconButton(
                               padding: const EdgeInsets.all(8),
                               constraints: const BoxConstraints(
                                 minWidth: 0,
                                 minHeight: 0,
                               ),
-                              icon: const Icon(
+                              icon: Icon(
                                 Icons.more_vert,
-                                color: Colors.white70,
+                                color: palette.textSecondary,
                                 size: 20,
                               ),
                               onPressed: () => onEditCategory?.call(category),
@@ -92,10 +97,10 @@ class MenuDrawer extends StatelessWidget {
             label: 'Mis notas borradas',
             selected: selectedItem == 'deleted_notes',
             onTap: () => onMenuItemTapped?.call('deleted_notes'),
-            iconColor: Colors.redAccent,
-            textColor: Colors.redAccent,
+            iconColor: palette.destructiveAccent,
+            textColor: palette.destructiveAccent,
           ),
-          const Divider(color: Colors.white12, height: 16),
+          Divider(color: palette.border, height: 16),
           _MenuItemTile(
             icon: Icons.settings,
             label: 'Configuración',
@@ -138,11 +143,12 @@ class _MenuItemTileState extends State<_MenuItemTile> {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
     final bool active = widget.selected || _hovering;
-    final Color backgroundColor = active
-        ? Colors.white.withValues(alpha: 0.10)
-        : Colors.transparent;
-    final Color foregroundColor = active ? Colors.white : Colors.white70;
+    final Color backgroundColor = active ? palette.hover : palette.transparent;
+    final Color foregroundColor = active
+        ? palette.textPrimary
+        : palette.textSecondary;
     final Widget? trailing = _hovering ? widget.trailing : null;
 
     return MouseRegion(
@@ -155,11 +161,7 @@ class _MenuItemTileState extends State<_MenuItemTile> {
       child: AnimatedContainer(
         duration: const Duration(milliseconds: 180),
         curve: Curves.easeOutCubic,
-        margin: const EdgeInsets.only(
-          right: 8,
-          top: 2,
-          bottom: 2,
-        ),
+        margin: const EdgeInsets.only(right: 8, top: 2, bottom: 2),
         child: Material(
           color: backgroundColor,
           borderRadius: const BorderRadius.only(
@@ -169,11 +171,17 @@ class _MenuItemTileState extends State<_MenuItemTile> {
           clipBehavior: Clip.antiAlias,
           child: ListTile(
             contentPadding: const EdgeInsets.only(left: 16, right: 8),
-            leading: Icon(widget.icon, color: widget.iconColor ?? foregroundColor),
+            leading: Icon(
+              widget.icon,
+              color: widget.iconColor ?? foregroundColor,
+            ),
             trailing: trailing,
             title: Text(
               widget.label,
-              style: TextStyle(color: widget.textColor ?? foregroundColor, fontSize: 14),
+              style: TextStyle(
+                color: widget.textColor ?? foregroundColor,
+                fontSize: 14,
+              ),
             ),
             onTap: widget.onTap,
             onLongPress: widget.onLongPress,

lib/widgets/note_card.dart

@@ -1,138 +1,161 @@
 import 'package:flutter/material.dart';
 
+import 'package:notas/data/note_body.dart';
+import 'package:notas/models/category.dart';
 import 'package:notas/models/note.dart';
+import 'package:notas/theme/app_palette.dart';
+import 'package:notas/widgets/category_style.dart';
 
-// Small presentational widget for a note inside the grid.
-// Keep this widget lightweight and layout-agnostic: it should not force
-// width/height constraints (so it works inside different parent layouts
-// like MasonryGridView or Draggable feedback). Visual styling only.
-
-class NoteCard extends StatefulWidget {
+class NoteCard extends StatelessWidget {
   const NoteCard({
     super.key,
     required this.note,
-    this.onTap,
-    this.isDragging = false,
+    this.category,
+    this.isSelected = false,
     this.borderColor,
+    this.onTap,
+    this.onDelete,
+    this.onChangeCategory,
+    this.showSelectionBorder = true,
   });
 
   final Note note;
-  final VoidCallback? onTap;
-  final bool isDragging;
+  final Category? category;
+  final bool isSelected;
   final Color? borderColor;
-
-  @override
-  State<NoteCard> createState() => _NoteCardState();
-}
-
-class _NoteCardState extends State<NoteCard> {
-  bool _isPressed = false;
+  final VoidCallback? onTap;
+  final VoidCallback? onDelete;
+  final ValueChanged<BuildContext>? onChangeCategory;
+  final bool showSelectionBorder;
 
   @override
   Widget build(BuildContext context) {
-    final bool showGrabbing = widget.isDragging || _isPressed;
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+    final String bodyText = noteBodyToPlainText(note.body).trim();
+    final Color? categoryColor = category?.colorValue == null
+        ? null
+        : Color(category!.colorValue!);
+    final IconData? categoryIcon = category == null
+        ? null
+        : CategoryStyle.iconForCodePoint(category!.iconCodePoint);
 
-    return MouseRegion(
-      cursor: showGrabbing ? SystemMouseCursors.grabbing : SystemMouseCursors.grab,
-      child: GestureDetector(
-        onTapDown: widget.onTap == null
-            ? null
-            : (_) {
-                setState(() {
-                  _isPressed = true;
-                });
-              },
-        onTapUp: widget.onTap == null
-            ? null
-            : (_) {
-                setState(() {
-                  _isPressed = false;
-                });
-              },
-        onTapCancel: widget.onTap == null
-            ? null
-            : () {
-                setState(() {
-                  _isPressed = false;
-                });
-              },
-        onTap: widget.onTap,
-        child: Container(
-          padding: const EdgeInsets.all(16),
-          decoration: BoxDecoration(
-            color: const Color.fromRGBO(24, 25, 26, 1),
-            borderRadius: BorderRadius.circular(12),
-            border: Border.all(
-              color: widget.borderColor ?? Colors.white24,
-              width: 1,
-            ),
-          ),
-          child: LayoutBuilder(
-            builder: (BuildContext context, BoxConstraints constraints) {
-              // Estimate whether the body will exceed 20 lines without always
-              // running the expensive TextPainter layout. This heuristic counts
-              // newline characters and estimates wrapped lines based on an
-              // average characters-per-line to handle many short lines well.
-              final List<String> rawLines = widget.note.body.split('\n');
-              const int avgCharsPerLine = 40;
-              int estimatedLines = 0;
-              for (final String line in rawLines) {
-                estimatedLines += (line.trim().length ~/ avgCharsPerLine) + 1;
-              }
-
-              final bool needsPreciseMeasurement = estimatedLines > 20;
-              final bool isBodyTruncated;
-
-              if (needsPreciseMeasurement) {
-                final TextPainter textPainter = TextPainter(
-                  text: TextSpan(
-                    text: widget.note.body,
-                    style: const TextStyle(color: Colors.white70, fontSize: 14),
-                  ),
-                  maxLines: 20,
-                  textDirection: TextDirection.ltr,
-                )..layout(maxWidth: constraints.maxWidth);
-
-                isBodyTruncated = textPainter.didExceedMaxLines;
-              } else {
-                isBodyTruncated = false;
-              }
-
-              return Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                mainAxisSize: MainAxisSize.min,
-                children: [
-                  Text(
-                    widget.note.title,
-                    style: const TextStyle(
-                      color: Colors.white,
-                      fontSize: 16,
-                      fontWeight: FontWeight.bold,
+    return Material(
+      color: Colors.transparent, // 1. Fondo completamente transparente
+      shape: BorderDirectional(
+        start: BorderSide(
+          color: (isSelected && showSelectionBorder)
+              ? palette.accent
+              : Colors.transparent,
+          width: isSelected ? 1.6 : 1.0,
+        ),
+      ),
+      child: InkWell(
+        borderRadius: BorderRadius.circular(14),
+        onTap: onTap,
+        hoverColor:
+            Colors.transparent, // 2. Desactiva el efecto hover (pasar el ratón)
+        splashColor:
+            Colors.transparent, // 3. Desactiva el efecto de onda al hacer clic
+        highlightColor:
+            Colors.transparent, // Desactiva el brillo al mantener pulsado
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Expanded(
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      crossAxisAlignment: CrossAxisAlignment.center,
+                      children: [
+                        if (categoryIcon != null) ...[
+                          SizedBox(
+                            width: 18,
+                            height: 18,
+                            child: Icon(
+                              categoryIcon,
+                              size: 18,
+                              color: categoryColor ?? palette.textSecondary,
+                            ),
+                          ),
+                          const SizedBox(width: 4),
+                        ],
+                        Expanded(
+                          child: Text(
+                            note.title.isEmpty ? 'Sin título' : note.title,
+                            maxLines: 1,
+                            overflow: TextOverflow.ellipsis,
+                            style: TextStyle(
+                              color: palette.textPrimary,
+                              fontSize: 15,
+                              fontWeight: FontWeight.w700,
+                            ),
+                          ),
+                        ),
+                      ],
                     ),
-                    maxLines: 2,
-                    overflow: TextOverflow.ellipsis,
-                  ),
-                  const SizedBox(height: 8),
-                  Text(
-                    widget.note.body,
-                    style: const TextStyle(color: Colors.white70, fontSize: 14),
-                    maxLines: 20,
-                    overflow: TextOverflow.clip,
-                  ),
-                  if (isBodyTruncated) ...[
-                    const SizedBox(height: 4),
-                    const Text(
-                      '...',
+                    const SizedBox(height: 6),
+                    Text(
+                      bodyText.isEmpty ? ' ' : bodyText,
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
                       style: TextStyle(
-                        color: Colors.white54,
-                        fontSize: 18,
-                        height: 1,
+                        color: palette.textSecondary,
+                        fontSize: 14,
+                        height: 1.2,
                       ),
                     ),
+                    const SizedBox(height: 4),
                   ],
-                ],
-              );
-            },
+                ),
+              ),
+              const SizedBox(width: 8),
+              Builder(
+                builder: (BuildContext buttonContext) {
+                  return PopupMenuButton<String>(
+                    icon: Icon(Icons.more_vert, color: palette.textSecondary),
+                    color: palette.surfaceElevated,
+                    elevation: 10,
+                    shape: RoundedRectangleBorder(
+                      borderRadius: BorderRadius.circular(14),
+                    ),
+                    onSelected: (String value) {
+                      switch (value) {
+                        case 'category':
+                          onChangeCategory?.call(buttonContext);
+                          return;
+                        case 'delete':
+                          onDelete?.call();
+                          return;
+                      }
+                    },
+                    itemBuilder: (BuildContext context) =>
+                        <PopupMenuEntry<String>>[
+                          const PopupMenuItem<String>(
+                            value: 'category',
+                            child: Text('Modificar categoría'),
+                          ),
+                          PopupMenuItem<String>(
+                            value: 'delete',
+                            child: Row(
+                              children: const [
+                                Icon(Icons.delete_outline, color: Colors.red),
+                                SizedBox(width: 10),
+                                Text(
+                                  'Eliminar',
+                                  style: TextStyle(color: Colors.red),
+                                ),
+                              ],
+                            ),
+                          ),
+                        ],
+                  );
+                },
+              ),
+            ],
           ),
         ),
       ),

lib/widgets/search_app_bar.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:notas/theme/app_palette.dart';
 
 class SearchAppBar extends StatefulWidget {
   const SearchAppBar({
@@ -51,22 +52,23 @@ class _SearchAppBarState extends State<SearchAppBar> {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     return Container(
       decoration: BoxDecoration(
-        color: Colors.transparent,
-        border: Border(
-          bottom: BorderSide(
-            color: Colors.white.withValues(alpha: 0.12),
-            width: 0.5,
-          ),
-        ),
+        color: palette.transparent,
+        border: Border(bottom: BorderSide(color: palette.border, width: 0.5)),
       ),
       padding: const EdgeInsets.only(left: 8, right: 20, top: 7, bottom: 7),
       child: Row(
         children: [
           IconButton(
             onPressed: widget.onLeadingPressed ?? widget.onMenuPressed,
-            icon: Icon(widget.leadingIcon, color: Colors.white70, size: 20),
+            icon: Icon(
+              widget.leadingIcon,
+              color: palette.textSecondary,
+              size: 20,
+            ),
             tooltip: widget.leadingTooltip,
             splashRadius: 18,
             constraints: const BoxConstraints(minWidth: 40, minHeight: 40),
@@ -84,18 +86,21 @@ class _SearchAppBarState extends State<SearchAppBar> {
                       child: TextField(
                         controller: _searchController,
                         onChanged: widget.onSearchChanged,
-                        style: const TextStyle(color: Colors.white, fontSize: 13),
-                        cursorColor: Colors.white70,
+                        style: TextStyle(
+                          color: palette.textPrimary,
+                          fontSize: 13,
+                        ),
+                        cursorColor: palette.textSecondary,
                         decoration: InputDecoration(
                           hintText: widget.searchHint,
                           hintStyle: TextStyle(
-                            color: Colors.white.withValues(alpha: 0.5),
+                            color: palette.textSecondary.withValues(alpha: 0.6),
                           ),
                           suffixIcon: _searchController.text.isNotEmpty
                               ? IconButton(
-                                  icon: const Icon(
+                                  icon: Icon(
                                     Icons.clear,
-                                    color: Colors.white70,
+                                    color: palette.textSecondary,
                                     size: 18,
                                   ),
                                   onPressed: () {
@@ -107,37 +112,37 @@ class _SearchAppBarState extends State<SearchAppBar> {
                                     minHeight: 36,
                                   ),
                                 )
-                              : const Padding(
-                                  padding: EdgeInsets.only(right: 8),
+                              : Padding(
+                                  padding: const EdgeInsets.only(right: 8),
                                   child: Icon(
                                     Icons.search,
-                                    color: Colors.white70,
+                                    color: palette.textSecondary,
                                     size: 18,
                                   ),
                                 ),
                           border: OutlineInputBorder(
                             borderRadius: BorderRadius.circular(8),
                             borderSide: BorderSide(
-                              color: Colors.white.withValues(alpha: 0.2),
+                              color: palette.border,
                               width: 0.5,
                             ),
                           ),
                           enabledBorder: OutlineInputBorder(
                             borderRadius: BorderRadius.circular(8),
                             borderSide: BorderSide(
-                              color: Colors.white.withValues(alpha: 0.2),
+                              color: palette.border,
                               width: 0.5,
                             ),
                           ),
                           focusedBorder: OutlineInputBorder(
                             borderRadius: BorderRadius.circular(8),
                             borderSide: BorderSide(
-                              color: Colors.white.withValues(alpha: 0.4),
-                              width: 0.5,
+                              color: palette.accent,
+                              width: 0.6,
                             ),
                           ),
                           filled: true,
-                          fillColor: Colors.white.withValues(alpha: 0.05),
+                          fillColor: palette.fill,
                           contentPadding: const EdgeInsets.symmetric(
                             horizontal: 12,
                             vertical: 8,
@@ -151,8 +156,8 @@ class _SearchAppBarState extends State<SearchAppBar> {
                     alignment: Alignment.centerLeft,
                     child: Text(
                       widget.titleText ?? '',
-                      style: const TextStyle(
-                        color: Colors.white,
+                      style: TextStyle(
+                        color: palette.textPrimary,
                         fontSize: 18,
                         fontWeight: FontWeight.w600,
                       ),

lib/widgets/sync_status_indicator.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:notas/theme/app_palette.dart';
 import 'package:notas/widgets/sync_status.dart';
 
 class SyncStatusIndicator extends StatelessWidget {
@@ -86,12 +87,14 @@ class SyncStatusIndicator extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final AppPalette palette = Theme.of(context).extension<AppPalette>()!;
+
     switch (status) {
       case SyncStatus.idle:
         return Tooltip(
           message: _messageForStatus(),
           child: _buildIndicator(
-            const Icon(Icons.cloud_outlined, size: 16, color: Colors.white38),
+            Icon(Icons.cloud_outlined, size: 16, color: palette.textSecondary),
           ),
         );
 
@@ -101,7 +104,7 @@ class SyncStatusIndicator extends StatelessWidget {
           child: _buildIndicator(
             _buildStatusBadge(
               icon: Icons.sync,
-              color: const Color.fromARGB(255, 165, 165, 165),
+              color: palette.syncPreparing,
               determinate: false,
             ),
           ),
@@ -113,7 +116,7 @@ class SyncStatusIndicator extends StatelessWidget {
           child: _buildIndicator(
             _buildStatusBadge(
               icon: Icons.cloud_upload_outlined,
-              color: const Color.fromARGB(255, 109, 191, 255),
+              color: palette.syncEncrypting,
               determinate: true,
             ),
           ),
@@ -125,7 +128,7 @@ class SyncStatusIndicator extends StatelessWidget {
           child: _buildIndicator(
             _buildStatusBadge(
               icon: Icons.cloud_upload,
-              color: const Color.fromARGB(255, 98, 190, 255),
+              color: palette.syncUploading,
               determinate: false,
             ),
           ),
@@ -137,7 +140,7 @@ class SyncStatusIndicator extends StatelessWidget {
           child: _buildIndicator(
             _buildStatusBadge(
               icon: Icons.cloud_sync_outlined,
-              color: const Color.fromARGB(255, 150, 150, 150),
+              color: palette.syncWaiting,
               determinate: false,
             ),
           ),
@@ -149,7 +152,7 @@ class SyncStatusIndicator extends StatelessWidget {
           child: _buildIndicator(
             _buildStatusBadge(
               icon: Icons.cloud_download_outlined,
-              color: const Color.fromARGB(255, 154, 194, 112),
+              color: palette.syncDecrypting,
               determinate: true,
             ),
           ),
@@ -161,7 +164,7 @@ class SyncStatusIndicator extends StatelessWidget {
           child: _buildIndicator(
             _buildStatusBadge(
               icon: Icons.sync,
-              color: const Color.fromARGB(255, 150, 150, 150),
+              color: palette.syncWaiting,
               determinate: false,
             ),
           ),
@@ -171,7 +174,7 @@ class SyncStatusIndicator extends StatelessWidget {
         return Tooltip(
           message: _messageForStatus(),
           child: _buildIndicator(
-            const Icon(Icons.check_circle, size: 16, color: Colors.green),
+            Icon(Icons.check_circle, size: 16, color: palette.success),
           ),
         );
 
@@ -179,7 +182,7 @@ class SyncStatusIndicator extends StatelessWidget {
         return Tooltip(
           message: _messageForStatus(),
           child: _buildIndicator(
-            const Icon(Icons.error, size: 16, color: Colors.red),
+            Icon(Icons.error, size: 16, color: palette.destructiveAccent),
           ),
         );
     }

linux/flutter/generated_plugin_registrant.cc

@@ -8,6 +8,7 @@
 
 #include <flutter_secure_storage_linux/flutter_secure_storage_linux_plugin.h>
 #include <screen_retriever_linux/screen_retriever_linux_plugin.h>
+#include <url_launcher_linux/url_launcher_plugin.h>
 #include <window_manager/window_manager_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
@@ -17,6 +18,9 @@ void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) screen_retriever_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "ScreenRetrieverLinuxPlugin");
   screen_retriever_linux_plugin_register_with_registrar(screen_retriever_linux_registrar);
+  g_autoptr(FlPluginRegistrar) url_launcher_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "UrlLauncherPlugin");
+  url_launcher_plugin_register_with_registrar(url_launcher_linux_registrar);
   g_autoptr(FlPluginRegistrar) window_manager_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "WindowManagerPlugin");
   window_manager_plugin_register_with_registrar(window_manager_registrar);

linux/flutter/generated_plugins.cmake

@@ -5,6 +5,7 @@
 list(APPEND FLUTTER_PLUGIN_LIST
   flutter_secure_storage_linux
   screen_retriever_linux
+  url_launcher_linux
   window_manager
 )
 

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -7,14 +7,18 @@ import Foundation
 
 import flutter_secure_storage_darwin
 import local_auth_darwin
+import quill_native_bridge_macos
 import screen_retriever_macos
 import shared_preferences_foundation
+import url_launcher_macos
 import window_manager
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FlutterSecureStorageDarwinPlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStorageDarwinPlugin"))
   LocalAuthPlugin.register(with: registry.registrar(forPlugin: "LocalAuthPlugin"))
+  QuillNativeBridgePlugin.register(with: registry.registrar(forPlugin: "QuillNativeBridgePlugin"))
   ScreenRetrieverMacosPlugin.register(with: registry.registrar(forPlugin: "ScreenRetrieverMacosPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
+  UrlLauncherPlugin.register(with: registry.registrar(forPlugin: "UrlLauncherPlugin"))
   WindowManagerPlugin.register(with: registry.registrar(forPlugin: "WindowManagerPlugin"))
 }

pubspec.lock

@@ -5,18 +5,18 @@ packages:
     dependency: transitive
     description:
       name: _fe_analyzer_shared
-      sha256: a49d6cf99e8d8e7a8e93668d09ced0bbdb954d0b4fccc2f5f9241c6b87fad95c
+      sha256: cd6add6f846f35fb79f3c315296703c1a24f3cfd7f4739d91a74961c1c7e9f1b
       url: "https://pub.dev"
     source: hosted
-    version: "99.0.0"
+    version: "100.0.0"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
-      sha256: "663efa951fb8a45e06f491223a604c93820598f20e6a99c25617a1576065e8b7"
+      sha256: "6ba98576948803398b69e3a444df24eacdbe12ed699c7014e120ea38552debbf"
       url: "https://pub.dev"
     source: hosted
-    version: "12.1.0"
+    version: "13.0.0"
   archive:
     dependency: transitive
     description:
@@ -141,10 +141,10 @@ packages:
     dependency: transitive
     description:
       name: code_assets
-      sha256: "83ccdaa064c980b5596c35dd64a8d3ecc68620174ab9b90b6343b753aa721687"
+      sha256: bf394f466ba9205f1812a0433b392d6af280f155f56651eda7c18cc32ed493b8
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.0"
+    version: "1.2.1"
   collection:
     dependency: transitive
     description:
@@ -161,6 +161,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.2"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      sha256: d687bec93342bf6a764a116d15c8694ebeff10e633dc28a39dd3144f7195024e
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+3"
   crypto:
     dependency: "direct main"
     description:
@@ -177,6 +185,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.9.0"
+  csslib:
+    dependency: transitive
+    description:
+      name: csslib
+      sha256: "09bad715f418841f976c77db72d5398dc1253c21fb9c0c7f0b0b985860b2d58e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -185,30 +201,46 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.9"
+  dart_quill_delta:
+    dependency: transitive
+    description:
+      name: dart_quill_delta
+      sha256: bddb0b2948bd5b5a328f1651764486d162c59a8ccffd4c63e8b2c5e44be1dac4
+      url: "https://pub.dev"
+    source: hosted
+    version: "10.8.3"
   dart_style:
     dependency: transitive
     description:
       name: dart_style
-      sha256: a4c1ccfee44c7e75ed80484071a5c142a385345e658fd8bd7c4b5c97e7198f98
+      sha256: "59d53ef8eaed9d288ed9767618e2b31c4fa0383a127db59d5eb2e737a7638a60"
       url: "https://pub.dev"
     source: hosted
-    version: "3.1.8"
+    version: "3.1.9"
+  diff_match_patch:
+    dependency: transitive
+    description:
+      name: diff_match_patch
+      sha256: "2efc9e6e8f449d0abe15be240e2c2a3bcd977c8d126cfd70598aee60af35c0a4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.1"
   drift:
     dependency: "direct main"
     description:
       name: drift
-      sha256: "8033500116b24398fba0cca0369cc31678cd627c01e41753a61186911cea743e"
+      sha256: "6cc0b623c0e83f7080524d8396e9301b1d78b9c66a4fdceeb0f798211303254c"
       url: "https://pub.dev"
     source: hosted
-    version: "2.33.0"
+    version: "2.34.0"
   drift_dev:
     dependency: "direct dev"
     description:
       name: drift_dev
-      sha256: b3dd5b75e30522a91da8abda9f5bb17230cb038097f6d15fa75d42bb563428aa
+      sha256: "042a5fb507ab5697f67eb55b75cfff2f665701f6606926136d6d4e85f81ff837"
       url: "https://pub.dev"
     source: hosted
-    version: "2.33.0"
+    version: "2.34.1+1"
   fake_async:
     dependency: transitive
     description:
@@ -225,14 +257,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.0"
-  ffi_leak_tracker:
-    dependency: transitive
-    description:
-      name: ffi_leak_tracker
-      sha256: "4093d4ef9ca06ffe2786e73bfb25e22aa92112b9bb4ec941f11e3e6b61489a97"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.1.2"
   file:
     dependency: transitive
     description:
@@ -241,6 +265,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
+  file_selector_platform_interface:
+    dependency: transitive
+    description:
+      name: file_selector_platform_interface
+      sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  file_selector_windows:
+    dependency: transitive
+    description:
+      name: file_selector_windows
+      sha256: "62197474ae75893a62df75939c777763d39c2bc5f73ce5b88497208bc269abfd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3+5"
   fixnum:
     dependency: transitive
     description:
@@ -254,6 +294,54 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_colorpicker:
+    dependency: transitive
+    description:
+      name: flutter_colorpicker
+      sha256: "969de5f6f9e2a570ac660fb7b501551451ea2a1ab9e2097e89475f60e07816ea"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  flutter_keyboard_visibility_linux:
+    dependency: transitive
+    description:
+      name: flutter_keyboard_visibility_linux
+      sha256: "6fba7cd9bb033b6ddd8c2beb4c99ad02d728f1e6e6d9b9446667398b2ac39f08"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  flutter_keyboard_visibility_macos:
+    dependency: transitive
+    description:
+      name: flutter_keyboard_visibility_macos
+      sha256: c5c49b16fff453dfdafdc16f26bdd8fb8d55812a1d50b0ce25fc8d9f2e53d086
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  flutter_keyboard_visibility_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_keyboard_visibility_platform_interface
+      sha256: e43a89845873f7be10cb3884345ceb9aebf00a659f479d1c8f4293fcb37022a4
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
+  flutter_keyboard_visibility_temp_fork:
+    dependency: transitive
+    description:
+      name: flutter_keyboard_visibility_temp_fork
+      sha256: e3d02900640fbc1129245540db16944a0898b8be81694f4bf04b6c985bed9048
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.5"
+  flutter_keyboard_visibility_windows:
+    dependency: transitive
+    description:
+      name: flutter_keyboard_visibility_windows
+      sha256: fc4b0f0b6be9b93ae527f3d527fb56ee2d918cd88bbca438c478af7bcfd0ef73
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
   flutter_launcher_icons:
     dependency: "direct dev"
     description:
@@ -270,38 +358,59 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.0"
+  flutter_localizations:
+    dependency: "direct main"
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
       name: flutter_plugin_android_lifecycle
-      sha256: "38d1c268de9097ff59cf0e844ac38759fc78f76836d37edad06fa21e182055a0"
+      sha256: "3854fe5e3bff0b113c658f260b90c95dea17c92db0f2addeac2e343dd9969785"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.34"
+    version: "2.0.35"
+  flutter_quill:
+    dependency: "direct main"
+    description:
+      name: flutter_quill
+      sha256: "3ee7125b2dd3f3bce3ebdaac722a72f0c8aff3db9aa19053a9d777db12d71c98"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.5.1"
+  flutter_quill_delta_from_html:
+    dependency: transitive
+    description:
+      name: flutter_quill_delta_from_html
+      sha256: "0eb801ea8dd498cadc057507af5da794d4c9599ce58b2569cb3d4bb53ba8bed2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.3"
   flutter_secure_storage:
     dependency: "direct main"
     description:
       name: flutter_secure_storage
-      sha256: "6848263f9744072d0977347c383fb8b57d9780319a6bf5238b5a2866a029de62"
+      sha256: "7686b1d6a29985dcbb808c59518226e603e3bfa7c0ddfd1a0d00e4cda77c868e"
       url: "https://pub.dev"
     source: hosted
-    version: "10.2.0"
+    version: "10.3.1"
   flutter_secure_storage_darwin:
     dependency: transitive
     description:
       name: flutter_secure_storage_darwin
-      sha256: "67cd1ff671add31dc13e45194398187a04bb63804b37fa47866afae296d73fcb"
+      sha256: "82329fa5cdf343773b1b6897dea959105a29f092454259edff92f9f6637e8149"
       url: "https://pub.dev"
     source: hosted
-    version: "0.3.1"
+    version: "0.3.2"
   flutter_secure_storage_linux:
     dependency: transitive
     description:
       name: flutter_secure_storage_linux
-      sha256: "2b5c76dce569ab752d55a1cee6a2242bcc11fdba927078fb88c503f150767cda"
+      sha256: a5f35ddab43cf5c8215d2feb4ce1957851f28c5c37e6f04335066a0602087bf5
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.0"
+    version: "3.0.1"
   flutter_secure_storage_platform_interface:
     dependency: transitive
     description:
@@ -322,10 +431,10 @@ packages:
     dependency: transitive
     description:
       name: flutter_secure_storage_windows
-      sha256: "8f42f359f187a94dce7a3ab2ec5903d013dddfc7127078ebab19fa244c3840e8"
+      sha256: "3b7c8e068875dfd46719ff57c90d8c459c87f2302ed6b00ff006b3c9fcad1613"
       url: "https://pub.dev"
     source: hosted
-    version: "4.2.1"
+    version: "4.1.0"
   flutter_staggered_grid_view:
     dependency: "direct main"
     description:
@@ -364,18 +473,26 @@ packages:
     dependency: transitive
     description:
       name: hooks
-      sha256: "025f060e86d2d4c3c47b56e33caf7f93bf9283340f26d23424ebcfccf34f621e"
+      sha256: "9a62a50b50b769a737bc0a8ff381f333529df3ab746b2f6b02e83760231455ba"
       url: "https://pub.dev"
     source: hosted
-    version: "1.0.3"
+    version: "2.0.2"
+  html:
+    dependency: transitive
+    description:
+      name: html
+      sha256: "6d1264f2dffa1b1101c25a91dff0dc2daee4c18e87cd8538729773c073dbf602"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.15.6"
   http:
     dependency: "direct main"
     description:
       name: http
-      sha256: "5895291c13fa8a3bd82e76d5627f69e0d85ca6a30dcac95c4ea19a5d555879c2"
+      sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
       url: "https://pub.dev"
     source: hosted
-    version: "0.13.6"
+    version: "1.6.0"
   http_multi_server:
     dependency: transitive
     description:
@@ -396,10 +513,10 @@ packages:
     dependency: transitive
     description:
       name: image
-      sha256: f9881ff4998044947ec38d098bc7c8316ae1186fa786eddffdb867b9bc94dfce
+      sha256: "6300175e00616bbc832e2fc91bfa4d776af5402c81c7151bee6905bb08473c52"
       url: "https://pub.dev"
     source: hosted
-    version: "4.8.0"
+    version: "4.9.1"
   intl:
     dependency: "direct main"
     description:
@@ -484,10 +601,10 @@ packages:
     dependency: transitive
     description:
       name: local_auth_android
-      sha256: b201c006fa769c23386f89aa6837ec0eb8179fcfb212eadcf87b422b3f9a6a78
+      sha256: fdb936d59ab945c7af297defd67bd1ed87b11b6db1bc16d01e94677a8f1c38ec
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.8"
+    version: "2.0.9"
   local_auth_darwin:
     dependency: transitive
     description:
@@ -520,6 +637,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.0"
+  markdown:
+    dependency: transitive
+    description:
+      name: markdown
+      sha256: ee85086ad7698b42522c6ad42fe195f1b9898e4d974a1af4576c1a3a176cada9
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.3.1"
   matcher:
     dependency: transitive
     description:
@@ -556,18 +681,18 @@ packages:
     dependency: transitive
     description:
       name: native_toolchain_c
-      sha256: "6ba77bb18063eebe9de401f5e6437e95e1438af0a87a3a39084fbd37c90df572"
+      sha256: f9c168717100ae6d9fee9ffb0be379bf1f8b26b0f6bcbd4fdddcd931993a6a72
       url: "https://pub.dev"
     source: hosted
-    version: "0.17.6"
+    version: "0.19.2"
   objective_c:
     dependency: transitive
     description:
       name: objective_c
-      sha256: "100a1c87616ab6ed41ec263b083c0ef3261ee6cd1dc3b0f35f8ddfa4f996fe52"
+      sha256: "6cb691c686fa2838c6deb34980d426145c2a5d537491cb83d463c33cdbc726ed"
       url: "https://pub.dev"
     source: hosted
-    version: "9.3.0"
+    version: "9.4.1"
   package_config:
     dependency: transitive
     description:
@@ -588,10 +713,10 @@ packages:
     dependency: "direct main"
     description:
       name: path_provider
-      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
+      sha256: a7f4874f987173da295a61c181b8ee71dab59b332a486b391babf26a1b884825
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.5"
+    version: "2.1.6"
   path_provider_android:
     dependency: transitive
     description:
@@ -612,18 +737,18 @@ packages:
     dependency: transitive
     description:
       name: path_provider_linux
-      sha256: f7a1fe3a634fe7734c8d3f2766ad746ae2a2884abe22e241a8b301bf5cac3279
+      sha256: "58c2005f147315b11e9b4a7bc889cd5203e250cba8e3f012dae259b4972b5c16"
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.1"
+    version: "2.2.2"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
-      sha256: "88f5779f72ba699763fa3a3b06aa4bf6de76c8e5de842cf6f29e2e06476c2334"
+      sha256: "484838772624c3a4b94f1e44a3e19897fee738f2d5c4ce448443b0417f7c9dda"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.3"
   path_provider_windows:
     dependency: transitive
     description:
@@ -688,6 +813,70 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.0"
+  quill_native_bridge:
+    dependency: transitive
+    description:
+      name: quill_native_bridge
+      sha256: "76a16512e398e84216f3f659f7cb18a89ec1e141ea908e954652b4ce6cf15b18"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.1.0"
+  quill_native_bridge_android:
+    dependency: transitive
+    description:
+      name: quill_native_bridge_android
+      sha256: b75c7e6ede362a7007f545118e756b1f19053994144ec9eda932ce5e54a57569
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.1+2"
+  quill_native_bridge_ios:
+    dependency: transitive
+    description:
+      name: quill_native_bridge_ios
+      sha256: d23de3cd7724d482fe2b514617f8eedc8f296e120fb297368917ac3b59d8099f
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.1"
+  quill_native_bridge_macos:
+    dependency: transitive
+    description:
+      name: quill_native_bridge_macos
+      sha256: "1c0631bd1e2eee765a8b06017c5286a4e829778f4585736e048eb67c97af8a77"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.1"
+  quill_native_bridge_platform_interface:
+    dependency: transitive
+    description:
+      name: quill_native_bridge_platform_interface
+      sha256: "8264a2bdb8a294c31377a27b46c0f8717fa9f968cf113f7dc52d332ed9c84526"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.2+1"
+  quill_native_bridge_web:
+    dependency: transitive
+    description:
+      name: quill_native_bridge_web
+      sha256: "7c723f6824b0250d7f33e8b6c23f2f8eb0103fe48ee7ebf47ab6786b64d5c05d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.2"
+  quill_native_bridge_windows:
+    dependency: transitive
+    description:
+      name: quill_native_bridge_windows
+      sha256: "3f96ced19e3206ddf4f6f7dde3eb16bdd05e10294964009ea3a806d995aa7caa"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.0.2"
+  quiver:
+    dependency: transitive
+    description:
+      name: quiver
+      sha256: ea0b925899e64ecdfbf9c7becb60d5b50e706ade44a85b2363be2a22d88117d2
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.2"
   recase:
     dependency: transitive
     description:
@@ -708,42 +897,42 @@ packages:
     dependency: transitive
     description:
       name: screen_retriever
-      sha256: "570dbc8e4f70bac451e0efc9c9bb19fa2d6799a11e6ef04f946d7886d2e23d0c"
+      sha256: "42cc3b402a0f67d2455a0d067553d0f13453f6a008d98eababf8b63958d506bd"
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.2.1"
   screen_retriever_linux:
     dependency: transitive
     description:
       name: screen_retriever_linux
-      sha256: f7f8120c92ef0784e58491ab664d01efda79a922b025ff286e29aa123ea3dd18
+      sha256: "2a476f1a5538065bc5badf376cfdc83d6ecf07d77eb2391b9c2bff5a76970048"
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.2.1"
   screen_retriever_macos:
     dependency: transitive
     description:
       name: screen_retriever_macos
-      sha256: "71f956e65c97315dd661d71f828708bd97b6d358e776f1a30d5aa7d22d78a149"
+      sha256: b5abb900fcb86614ff10b738b34e37b9e1d03b0447280668e2bc8a98bdc7bd59
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.2.1"
   screen_retriever_platform_interface:
     dependency: transitive
     description:
       name: screen_retriever_platform_interface
-      sha256: ee197f4581ff0d5608587819af40490748e1e39e648d7680ecf95c05197240c0
+      sha256: "3af22d926bedf20c2caa308eea376776451a3af125919ce072e56525fded8901"
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.2.1"
   screen_retriever_windows:
     dependency: transitive
     description:
       name: screen_retriever_windows
-      sha256: "449ee257f03ca98a57288ee526a301a430a344a161f9202b4fcc38576716fe13"
+      sha256: c44b38a4c4bab34af259180a70a4eee1e29384e7b82e627c9faa68afcdab2e73
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.2.1"
   shared_preferences:
     dependency: "direct main"
     description:
@@ -756,10 +945,10 @@ packages:
     dependency: transitive
     description:
       name: shared_preferences_android
-      sha256: e8d4762b1e2e8578fc4d0fd548cebf24afd24f49719c08974df92834565e2c53
+      sha256: "93ae5884a9df5d3bb696825bceb3a17590754548b5d740eba51500afc8d088f5"
       url: "https://pub.dev"
     source: hosted
-    version: "2.4.23"
+    version: "2.4.26"
   shared_preferences_foundation:
     dependency: transitive
     description:
@@ -841,18 +1030,18 @@ packages:
     dependency: "direct main"
     description:
       name: sqlite3
-      sha256: "56da3e13ed7d28a66f930aa2b2b29db6736a233f08283326e96321dd812030f5"
+      sha256: "37356bcb56ce0d9404d602c41e4bdb7765e7e9732a3e47adb3d98c556a6abdad"
       url: "https://pub.dev"
     source: hosted
-    version: "3.3.1"
+    version: "3.3.3"
   sqlparser:
     dependency: transitive
     description:
       name: sqlparser
-      sha256: ecdc06d4a7d79dcbc928d99afd2f7f5b0f98a637c46f89be83d911617f759978
+      sha256: "40bdddb306a727be9ce510bd2d2b9a6c9db6c586d846ef7b22e3990a2b24f02d"
       url: "https://pub.dev"
     source: hosted
-    version: "0.44.4"
+    version: "0.44.5"
   stack_trace:
     dependency: transitive
     description:
@@ -909,6 +1098,70 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.0"
+  url_launcher:
+    dependency: transitive
+    description:
+      name: url_launcher
+      sha256: f6a7e5c4835bb4e3026a04793a4199ca2d14c739ec378fdfe23fc8075d0439f8
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.3.2"
+  url_launcher_android:
+    dependency: transitive
+    description:
+      name: url_launcher_android
+      sha256: b413d49b73867ac08dd2f9890efd3cc11f2a0e577618d50843440a1fb3776c32
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.3.32"
+  url_launcher_ios:
+    dependency: transitive
+    description:
+      name: url_launcher_ios
+      sha256: "580fe5dfb51671ae38191d316e027f6b76272b026370708c2d898799750a02b0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.4.1"
+  url_launcher_linux:
+    dependency: transitive
+    description:
+      name: url_launcher_linux
+      sha256: d5e14138b3bc193a0f63c10a53c94b91d399df0512b1f29b94a043db7482384a
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.2"
+  url_launcher_macos:
+    dependency: transitive
+    description:
+      name: url_launcher_macos
+      sha256: "368adf46f71ad3c21b8f06614adb38346f193f3a59ba8fe9a2fd74133070ba18"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.5"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      sha256: "552f8a1e663569be95a8190206a38187b531910283c3e982193e4f2733f01029"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.2"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      sha256: "85c81589622fbc87c1c683aaea164d3604a7777495a79d91e39ffcdec39ddb34"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  url_launcher_windows:
+    dependency: transitive
+    description:
+      name: url_launcher_windows
+      sha256: "712c70ab1b99744ff066053cbe3e80c73332b38d46e5e945c98689b2e66fc15f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.5"
   uuid:
     dependency: "direct main"
     description:
@@ -969,10 +1222,10 @@ packages:
     dependency: transitive
     description:
       name: win32
-      sha256: a1fc9eb9248baa05dfc12ed5b66e377b3e23f095eec078e0371622b9033810d9
+      sha256: d7cb55e04cd34096cd3a79b3330245f54cb96a370a1c27adb3c84b917de8b08e
       url: "https://pub.dev"
     source: hosted
-    version: "6.2.0"
+    version: "5.15.0"
   window_manager:
     dependency: "direct main"
     description:
@@ -993,10 +1246,10 @@ packages:
     dependency: transitive
     description:
       name: xml
-      sha256: "971043b3a0d3da28727e40ed3e0b5d18b742fa5a68665cca88e74b7876d5e025"
+      sha256: "67f0aff7be013d107995e9b75bf4e7f2c3ef2dfdb2c8e68024bba0a7fd5756a4"
       url: "https://pub.dev"
     source: hosted
-    version: "6.6.1"
+    version: "7.0.1"
   yaml:
     dependency: transitive
     description:
@@ -1006,5 +1259,5 @@ packages:
     source: hosted
     version: "3.1.3"
 sdks:
-  dart: ">=3.11.5 <4.0.0"
-  flutter: ">=3.38.4"
+  dart: ">=3.12.0 <4.0.0"
+  flutter: ">=3.44.0"

pubspec.yaml

@@ -2,7 +2,7 @@ name: notas
 description: "A new Flutter project."
 # The following line prevents the package from being accidentally published to
 # pub.dev using `flutter pub publish`. This is preferred for private packages.
-publish_to: 'none' # Remove this line if you wish to publish to pub.dev
+publish_to: "none" # Remove this line if you wish to publish to pub.dev
 
 # The following defines the version and build number for your application.
 # A version number is three numbers separated by dots, like 1.2.43
@@ -44,10 +44,14 @@ dependencies:
   flutter_secure_storage: ^10.2.0
   local_auth: ^3.0.1
   sqlite3: ^3.3.1
-  http: ^0.13.6
+  http: ^1.6.0
   crypto: ^3.0.6
   cryptography: ^2.7.0
   uuid: ^4.0.0
+  flutter_quill: ^11.5.1
+
+  flutter_localizations:
+    sdk: flutter
 
 dev_dependencies:
   flutter_test:
@@ -68,7 +72,6 @@ dev_dependencies:
 
 # The following section is specific to Flutter packages.
 flutter:
-
   # The following line ensures that the Material Icons font is
   # included with your application, so that you can use the icons in
   # the material Icons class.
@@ -113,7 +116,6 @@ hooks:
   # For details regarding fonts from package dependencies,
   # see https://flutter.dev/to/font-from-package
 
-
 flutter_launcher_icons:
   # Configuración general y móvil
   image_path: "assets/icon.png"

test/note_editor_screen_test.dart

@@ -1,31 +1,39 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:flutter_test/flutter_test.dart';
-
-import 'package:notas/models/category.dart';
+import 'package:flutter_quill/flutter_quill.dart';
 import 'package:notas/models/note.dart';
 import 'package:notas/screens/note_editor_screen.dart';
 
 void main() {
-  testWidgets('saves a note when only the category changes', (
+  testWidgets('autosaves a note when only the category changes', (
     WidgetTester tester,
   ) async {
     Note? savedNote;
 
+    final Note initialNote = Note(
+      title: 'Sin título',
+      body: '',
+      createdAt: DateTime(2026, 5, 21),
+      updatedAt: DateTime(2026, 5, 21),
+      position: 0,
+    );
+
     await tester.pumpWidget(
       MaterialApp(
+        localizationsDelegates: const <LocalizationsDelegate<dynamic>>[
+          GlobalMaterialLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+          FlutterQuillLocalizations.delegate,
+        ],
         home: Scaffold(
           body: NoteEditorScreen(
-            note: null,
-            categoryId: null,
-            categories: <Category>[
-              Category(
-                id: 'work',
-                name: 'Trabajo',
-                updatedAt: DateTime(2026, 5, 21),
-              ),
-            ],
-            onComplete: (dynamic result) {
-              savedNote = result as Note?;
+            repository: null,
+            note: initialNote,
+            saveNote: (Note note) async => note,
+            onSaved: (Note result) {
+              savedNote = result;
             },
           ),
         ),
@@ -38,44 +46,53 @@ void main() {
     await tester.pumpAndSettle();
 
     await tester.tap(find.text('Trabajo').last);
-    await tester.pumpAndSettle();
-
-    await tester.tap(find.text('Guardar'));
-    await tester.pumpAndSettle();
+    await tester.pump();
+    await tester.pump(const Duration(seconds: 2));
 
     expect(savedNote, isNotNull);
     expect(savedNote!.categoryId, 'work');
     expect(savedNote!.title, 'Sin título');
   });
 
-  testWidgets('only completes once when save is tapped twice', (
+  testWidgets('debounces multiple edits into a single save', (
     WidgetTester tester,
   ) async {
-    int completionCount = 0;
+    int saveCount = 0;
+
+    final Note initialNote = Note(
+      title: 'Sin título',
+      body: '',
+      createdAt: DateTime(2026, 5, 21),
+      updatedAt: DateTime(2026, 5, 21),
+      position: 0,
+    );
 
     await tester.pumpWidget(
       MaterialApp(
+        localizationsDelegates: const <LocalizationsDelegate<dynamic>>[
+          GlobalMaterialLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+          FlutterQuillLocalizations.delegate,
+        ],
         home: Scaffold(
           body: NoteEditorScreen(
-            note: null,
-            categoryId: null,
-            categories: <Category>[],
-            onComplete: (dynamic result) {
-              if (result is Note) {
-                completionCount += 1;
-              }
+            repository: null,
+            note: initialNote,
+            saveNote: (Note note) async {
+              saveCount += 1;
+              return note;
             },
           ),
         ),
       ),
     );
 
-    await tester.enterText(find.byType(TextField).first, 'Nota de prueba');
+    await tester.enterText(find.byType(TextField).first, 'Primera versión');
+    await tester.pump(const Duration(milliseconds: 300));
+    await tester.enterText(find.byType(TextField).first, 'Segunda versión');
+    await tester.pump(const Duration(seconds: 2));
 
-    await tester.tap(find.text('Guardar'));
-    await tester.tap(find.text('Guardar'));
-    await tester.pumpAndSettle();
-
-    expect(completionCount, 1);
+    expect(saveCount, 1);
   });
 }

test/note_positioning_test.dart

@@ -0,0 +1,20 @@
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:notas/data/note_positioning.dart';
+
+void main() {
+  test('converts between stored and displayed positions', () {
+    expect(toStoredNotePosition(1500.5), 15005);
+    expect(fromStoredNotePosition(15005), 1500.5);
+  });
+
+  test('supports descending gaps and rebalance', () {
+    expect(nextTopNotePosition(<int>[0, 10000, 20000]), 30000);
+    expect(
+      midpointNotePosition(higherPosition: 20000, lowerPosition: 10000),
+      15000,
+    );
+    expect(midpointNotePosition(higherPosition: 2, lowerPosition: 1), isNull);
+    expect(rebalanceNotePositions(3), <int>[20000, 10000, 0]);
+  });
+}

test/widget_test.dart

@@ -8,6 +8,6 @@ void main() {
     await tester.pumpWidget(const NotesApp());
 
     expect(find.byType(MaterialApp), findsOneWidget);
-    expect(find.text('Mis Notas'), findsWidgets);
+    expect(find.text('Preparando el vault local...'), findsWidgets);
   });
 }

windows/flutter/generated_plugin_registrant.cc

@@ -6,18 +6,24 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <file_selector_windows/file_selector_windows.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
 #include <local_auth_windows/local_auth_plugin.h>
 #include <screen_retriever_windows/screen_retriever_windows_plugin_c_api.h>
+#include <url_launcher_windows/url_launcher_windows.h>
 #include <window_manager/window_manager_plugin.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
+  FileSelectorWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FileSelectorWindows"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
   LocalAuthPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("LocalAuthPlugin"));
   ScreenRetrieverWindowsPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("ScreenRetrieverWindowsPluginCApi"));
+  UrlLauncherWindowsRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("UrlLauncherWindows"));
   WindowManagerPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("WindowManagerPlugin"));
 }

windows/flutter/generated_plugins.cmake

@@ -3,9 +3,11 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  file_selector_windows
   flutter_secure_storage_windows
   local_auth_windows
   screen_retriever_windows
+  url_launcher_windows
   window_manager
 )