import 'package:flutter/material.dart';
void main() => runApp(const LearningDemo());
class LearningDemo extends StatelessWidget {
  const LearningDemo({super.key});
  @override Widget build(BuildContext context) => MaterialApp(
    debugShowCheckedModeBanner: false,
    title: 'TBBJ Learning Demo',
    theme: ThemeData(colorSchemeSeed: Colors.indigo, useMaterial3: true),
    home: const DemoHome(),
  );
}
class DemoHome extends StatefulWidget {
  const DemoHome({super.key});
  @override State<DemoHome> createState() => _DemoHomeState();
}
class _DemoHomeState extends State<DemoHome> {
  int selected = 0;
  final pages = const [
    Center(child: Text('Dashboard — DEMO ONLY')),
    Center(child: Text('Family Registration — DEMO ONLY')),
    Center(child: Text('Member Profile — DEMO ONLY')),
  ];
  @override Widget build(BuildContext context) => Scaffold(
    appBar: AppBar(title: const Text('TBBJ Learning Demo')),
    body: pages[selected],
    bottomNavigationBar: NavigationBar(
      selectedIndex: selected,
      onDestinationSelected: (i) => setState(() => selected = i),
      destinations: const [
        NavigationDestination(icon: Icon(Icons.dashboard), label: 'Home'),
        NavigationDestination(icon: Icon(Icons.group_add), label: 'Family'),
        NavigationDestination(icon: Icon(Icons.person), label: 'Profile'),
      ],
    ),
  );
}