feat: initialize new Flutter project with core feature structure and cross-platform configuration

lib/core/theme/app_colors.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/material.dart';
+
+class AppColors {
+  static const Color background = Color(0xFF0A0E14);
+  static const Color surface = Color(0xFF161B22);
+  static const Color primary = Color(0xFF2D7DEB); // Electric Blue
+  static const Color secondary = Color(0xFF0F9D58); // Emerald Green
+  static const Color accent = Color(0xFFF4B400); // Yellow
+  static const Color error = Color(0xFFDB4437); // Red
+  
+  static const Color textPrimary = Colors.white;
+  static const Color textSecondary = Color(0xFF8B949E);
+  
+  static const LinearGradient primaryGradient = LinearGradient(
+    colors: [primary, Color(0xFF1A5FBC)],
+    begin: Alignment.topLeft,
+    end: Alignment.bottomRight,
+  );
+
+  static const LinearGradient backgroundGradient = LinearGradient(
+    colors: [background, Color(0xFF10141B)],
+    begin: Alignment.topCenter,
+    end: Alignment.bottomCenter,
+  );
+}

lib/core/theme/app_theme.dart

@@ -0,0 +1,48 @@
+import 'package:flutter/material.dart';
+import 'package:google_fonts/google_fonts.dart';
+import 'app_colors.dart';
+
+class AppTheme {
+  static ThemeData get darkTheme {
+    return ThemeData(
+      useMaterial3: true,
+      brightness: Brightness.dark,
+      scaffoldBackgroundColor: AppColors.background,
+      colorScheme: ColorScheme.dark(
+        primary: AppColors.primary,
+        secondary: AppColors.secondary,
+        surface: AppColors.surface,
+        error: AppColors.error,
+      ),
+      textTheme: GoogleFonts.outfitTextTheme(
+        const TextTheme(
+          displayLarge: TextStyle(color: AppColors.textPrimary, fontWeight: FontWeight.bold),
+          displayMedium: TextStyle(color: AppColors.textPrimary, fontWeight: FontWeight.bold),
+          titleLarge: TextStyle(color: AppColors.textPrimary, fontWeight: FontWeight.w600),
+          bodyLarge: TextStyle(color: AppColors.textPrimary),
+          bodyMedium: TextStyle(color: AppColors.textSecondary),
+        ),
+      ),
+      cardTheme: CardThemeData(
+        color: AppColors.surface,
+        elevation: 0,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(20),
+          side: BorderSide(color: Colors.white.withOpacity(0.05)),
+        ),
+      ),
+
+      elevatedButtonTheme: ElevatedButtonThemeData(
+        style: ElevatedButton.styleFrom(
+          backgroundColor: AppColors.primary,
+          foregroundColor: Colors.white,
+          minimumSize: const Size(double.infinity, 56),
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(16),
+          ),
+          textStyle: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16),
+        ),
+      ),
+    );
+  }
+}