Modificação nos modos, correção de textos cortados

lib/features/settings/presentation/pages/settings_page.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 import '../../../../core/theme/app_colors.dart';
+import '../../../../core/theme/app_theme_extension.dart';
 import '../../../../core/services/theme_service.dart';
 import '../../../../core/providers/theme_provider.dart';
 
@@ -34,16 +35,12 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
               begin: Alignment.topLeft,
               end: Alignment.bottomRight,
               colors: themeMode == ThemeMode.light
-                  ? [
-                      const Color(0xFFD4E8E8),
-                      const Color(0xFFE8D4C0),
-                      const Color(0xFFD8E0E8),
+                  ? const [
+                      Color(0xFFD4E8E8),
+                      Color(0xFFE8D4C0),
+                      Color(0xFFD8E0E8),
                     ]
-                  : [
-                      Theme.of(context).colorScheme.primary.withOpacity(0.1),
-                      Theme.of(context).colorScheme.secondary.withOpacity(0.05),
-                      Theme.of(context).colorScheme.background,
-                    ],
+                  : AppThemeExtras.of(context).authBackgroundGradient,
             ),
           ),
           child: SafeArea(
@@ -55,7 +52,10 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
                   child: Row(
                     children: [
                       IconButton(
-                        icon: const Icon(Icons.arrow_back, color: Colors.white),
+                        icon: Icon(
+                          Icons.arrow_back,
+                          color: Theme.of(context).colorScheme.onSurface,
+                        ),
                         onPressed: () => context.go('/student-dashboard'),
                       ),
                       Expanded(