🎨 Enhanced UI/UX with FlexColorScheme Theming System

THEMING_GUIDE.md

@@ -0,0 +1,189 @@
+# 🎨 FlexColorScheme Theming Guide
+
+This guide explains the enhanced theming system implemented using [FlexColorScheme](https://pub.dev/packages/flex_color_scheme) in the WeatherApp.
+
+## 🌟 Features
+
+### Dynamic Weather-Based Theming
+- **Automatic theme switching** based on weather conditions
+- **Multiple theme variants**: Default (Blue), Stormy (Purple), Sunny (Amber)
+- **Material 3 design** with enhanced color schemes
+
+### Advanced Theming Capabilities
+- **Surface blending** for depth and modern appearance
+- **Consistent component theming** across all UI elements
+- **Custom typography** using Google Fonts (Inter)
+- **Responsive design** with proper visual density
+
+### User Controls
+- **Theme mode switching**: Light, Dark, System
+- **Manual theme variant selection**
+- **Theme settings widget** for user preferences
+
+## 🏗️ Architecture
+
+### Theme Configuration (`app_theme.dart`)
+```dart
+class AppTheme {
+  static ThemeData get light => FlexThemeData.light(
+    scheme: FlexScheme.blueM3,
+    surfaceMode: FlexSurfaceMode.levelSurfacesLowScaffold,
+    blendLevel: 7,
+    fontFamily: GoogleFonts.inter().fontFamily,
+    // ... component configurations
+  );
+}
+```
+
+### Theme Management (`theme_provider.dart`)
+- **Riverpod state management** for reactive theme changes
+- **Automatic weather detection** and theme switching
+- **Persistent theme preferences** (can be extended with storage)
+
+### Weather-Responsive Theming
+The app automatically switches themes based on weather conditions:
+
+| Weather Condition | Theme Variant | Color Scheme |
+|-------------------|---------------|-------------|
+| Clear/Sunny | Sunny | Warm Amber |
+| Rain/Storm/Thunder | Stormy | Deep Purple |
+| General/Cloudy | Default | Cool Blue |
+
+## 📱 UI Components
+
+### Enhanced Weather Card
+- **Gradient backgrounds** using theme colors
+- **Adaptive icons** based on weather conditions
+- **Information chips** for weather details
+- **Material 3 elevation** and shadows
+
+### Theme Settings Widget
+- **Interactive theme switching**
+- **Visual theme mode indicators**
+- **Weather theme explanations**
+- **Real-time preview** of changes
+
+## 🎯 Key Improvements
+
+### Visual Enhancements
+1. **Consistent Design Language**: All components follow Material 3 guidelines
+2. **Enhanced Depth**: Surface blending creates visual hierarchy
+3. **Better Contrast**: Improved readability in all lighting conditions
+4. **Smooth Transitions**: Animated theme changes for better UX
+
+### User Experience
+1. **Contextual Theming**: Weather-appropriate color schemes
+2. **Accessibility**: High contrast ratios and proper touch targets
+3. **Customization**: User control over theme preferences
+4. **Consistency**: Unified theming across the entire app
+
+## 🔧 Implementation Details
+
+### FlexColorScheme Configuration
+```dart
+FlexThemeData.light(
+  scheme: FlexScheme.blueM3,
+  surfaceMode: FlexSurfaceMode.levelSurfacesLowScaffold,
+  blendLevel: 7,
+  subThemesData: const FlexSubThemesData(
+    cardElevation: 4,
+    cardRadius: 16,
+    elevatedButtonRadius: 12,
+    inputDecoratorRadius: 12,
+    // ... more configurations
+  ),
+  useMaterial3: true,
+)
+```
+
+### Theme Provider Integration
+```dart
+@riverpod
+class ThemeNotifier extends _$ThemeNotifier {
+  void autoSwitchThemeForWeather(String weatherCondition) {
+    // Automatic theme switching logic
+  }
+}
+```
+
+## 🚀 Usage Examples
+
+### Basic Theme Integration
+```dart
+class MyApp extends StatelessWidget {
+  Widget build(BuildContext context) {
+    return Consumer(builder: (context, ref, _) {
+      final themeState = ref.watch(themeNotifierProvider);
+
+      return MaterialApp.router(
+        theme: themeState.lightTheme,
+        darkTheme: themeState.darkTheme,
+        themeMode: themeState.materialThemeMode,
+        // ...
+      );
+    });
+  }
+}
+```
+
+### Weather-Based Theme Switching
+```dart
+// Automatic switching in weather widgets
+WidgetsBinding.instance.addPostFrameCallback((_) {
+  ref.read(themeNotifierProvider.notifier)
+    .autoSwitchThemeForWeather(weatherCondition);
+});
+```
+
+### Manual Theme Control
+```dart
+// In settings or theme selector
+ref.read(themeNotifierProvider.notifier)
+  .changeThemeVariant(WeatherThemeVariant.stormy);
+```
+
+## 🎨 Color Schemes
+
+### Default Theme (Blue M3)
+- **Primary**: Material 3 Blue
+- **Use Case**: General weather conditions
+- **Mood**: Professional, reliable
+
+### Stormy Theme (Deep Purple)
+- **Primary**: Deep Purple shades
+- **Use Case**: Rain, thunderstorms, severe weather
+- **Mood**: Dramatic, powerful
+
+### Sunny Theme (Amber)
+- **Primary**: Warm amber tones
+- **Use Case**: Clear skies, sunny weather
+- **Mood**: Cheerful, energetic
+
+## 🔮 Future Enhancements
+
+1. **Seasonal Themes**: Different color schemes for seasons
+2. **Custom Color Schemes**: User-defined color palettes
+3. **Animation Themes**: Weather-appropriate animations
+4. **Accessibility Themes**: High contrast and colorblind-friendly options
+5. **Time-based Theming**: Different themes for day/night
+
+## 📚 Resources
+
+- [FlexColorScheme Documentation](https://docs.flexcolorscheme.com/)
+- [Material 3 Design System](https://m3.material.io/)
+- [Flutter Theming Guide](https://docs.flutter.dev/ui/design/themes)
+- [Riverpod State Management](https://riverpod.dev/)
+
+## 🤝 Contributing
+
+When contributing to the theming system:
+
+1. **Follow Material 3 guidelines**
+2. **Test in both light and dark modes**
+3. **Ensure accessibility compliance**
+4. **Document new theme variants**
+5. **Test with different weather conditions**
+
+---
+
+**Note**: This theming system is designed to be extensible. New weather conditions, color schemes, and user preferences can be easily added by following the established patterns.

lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:weather_app/src/feature/common/providers.dart';
+import 'package:weather_app/src/feature/theme/provider/theme_provider.dart';
 
 void main() {
   runApp(
@@ -14,13 +15,23 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Consumer(builder: (context, ref, _) {
+      // Watch theme state for reactive theme changes
+      final themeState = ref.watch(themeNotifierProvider);
+
       return MaterialApp.router(
         debugShowCheckedModeBanner: false,
-        theme: ThemeData(primarySwatch: Colors.blue),
+        title: 'Weather App',
+
+        // Use FlexColorScheme themes
+        theme: themeState.lightTheme,
+        darkTheme: themeState.darkTheme,
+        themeMode: themeState.materialThemeMode,
+
+        // Router configuration
         routerDelegate: ref.watch(appRouterProvider).delegate(),
         routeInformationParser:
             ref.watch(appRouterProvider).defaultRouteParser(),
       );
     });
   }
-}
+}