import 'package:flutter/material.dart';

class AboutPage extends StatelessWidget {
  const AboutPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('About')),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            const SizedBox(height: 20),
            Icon(
              Icons.calculate,
              size: 80,
              color: Theme.of(context).colorScheme.primary,
            ),
            const SizedBox(height: 20),
            Text(
              '方程计算器',
              style: Theme.of(context).textTheme.headlineMedium,
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 10),
            Text(
              'Version 1.0.0',
              style: Theme.of(context).textTheme.bodyLarge,
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 20),
            Text(
              '这是一个用于求解方程和表达式的计算器应用。\n\n支持多种类型的数学计算，包括代数方程、表达式求值等。',
              style: Theme.of(context).textTheme.bodyMedium,
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 30),
            Text(
              '© 2025 Simple Math Calculator',
              style: Theme.of(context).textTheme.bodySmall,
              textAlign: TextAlign.center,
            ),
          ],
        ),
      ),
    );
  }
}