Initial commit with Flutter and Node.js code

whatsapp_app/lib/theme/app_theme.dart

@@ -0,0 +1,44 @@
+import 'package:flutter/material.dart';
+
+class AppTheme {
+  // Dark WhatsApp Palette
+  static const Color background     = Color(0xff111b21);
+  static const Color surface        = Color(0xff1f2c34);
+  static const Color surfaceLight   = Color(0xff2a3942);
+  static const Color primary        = Color(0xff00a884);
+  static const Color primaryDark    = Color(0xff005c4b);
+  
+  static const Color outgoingMsg    = Color(0xff005c4b);
+  static const Color incomingMsg    = Color(0xff1f2c34);
+  
+  static const Color textPrimary    = Color(0xffe9edef);
+  static const Color textSecondary  = Color(0xff8696a0);
+  static const Color iconColor      = Color(0xff8696a0);
+
+  static ThemeData get dark {
+    return ThemeData.dark().copyWith(
+      scaffoldBackgroundColor: background,
+      primaryColor: primary,
+      colorScheme: const ColorScheme.dark(
+        primary: primary,
+        background: background,
+        surface: surface,
+      ),
+      appBarTheme: const AppBarTheme(
+        backgroundColor: surface,
+        elevation: 0,
+        iconTheme: IconThemeData(color: iconColor),
+        titleTextStyle: TextStyle(
+          color: textPrimary,
+          fontSize: 20,
+          fontWeight: FontWeight.bold,
+        ),
+      ),
+      textSelectionTheme: const TextSelectionThemeData(
+        cursorColor: primary,
+        selectionColor: primaryDark,
+        selectionHandleColor: primary,
+      ),
+    );
+  }
+}