feat: Establish initial application structure, theming, responsive utilities, and core feature screens.

lib/main.dart

@@ -1,12 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'core/router/app_router.dart';
+import 'core/theme/app_theme.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-
-  // Note: Hive is no longer needed for auth - using API backend now
-
   runApp(const ProviderScope(child: MyApp()));
 }
 
@@ -20,33 +18,9 @@ class MyApp extends ConsumerWidget {
     return MaterialApp.router(
       title: 'XtremFlow IPTV',
       debugShowCheckedModeBanner: false,
-      theme: ThemeData(
-        useMaterial3: true,
-        colorScheme: ColorScheme.fromSeed(
-          seedColor: Colors.blue,
-          brightness: Brightness.light,
-        ),
-        cardTheme: CardThemeData(
-          elevation: 2,
-          shape: RoundedRectangleBorder(
-            borderRadius: BorderRadius.circular(12),
-          ),
-        ),
-      ),
-      darkTheme: ThemeData(
-        useMaterial3: true,
-        colorScheme: ColorScheme.fromSeed(
-          seedColor: Colors.blue,
-          brightness: Brightness.dark,
-        ),
-        cardTheme: CardThemeData(
-          elevation: 2,
-          shape: RoundedRectangleBorder(
-            borderRadius: BorderRadius.circular(12),
-          ),
-        ),
-      ),
-      themeMode: ThemeMode.system,
+      theme: AppTheme.darkTheme,
+      darkTheme: AppTheme.darkTheme,
+      themeMode: ThemeMode.dark, // Force dark mode for premium look
       routerConfig: router,
     );
   }