import 'package:flutter/material.dart';

/// Application theme and MaterialApp configuration.
class CaptionTransApp extends StatelessWidget {
  const CaptionTransApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Caption Trans',
      debugShowCheckedModeBanner: false,
      theme: _buildDarkTheme(),
      home: const _AppShell(),
    );
  }

  ThemeData _buildDarkTheme() {
    final colorScheme = ColorScheme.fromSeed(
      seedColor: const Color(0xFF6C63FF),
      brightness: Brightness.dark,
      surface: const Color(0xFF1A1A2E),
    );

    return ThemeData(
      useMaterial3: true,
      brightness: Brightness.dark,
      colorScheme: colorScheme,
      scaffoldBackgroundColor: const Color(0xFF0F0F1A),
      cardTheme: CardThemeData(
        color: const Color(0xFF1A1A2E),
        elevation: 0,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16),
          side: BorderSide(
            color: Colors.white.withValues(alpha: 0.08),
          ),
        ),
      ),
      elevatedButtonTheme: ElevatedButtonThemeData(
        style: ElevatedButton.styleFrom(
          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 14),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12),
          ),
        ),
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: Colors.white.withValues(alpha: 0.05),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: BorderSide.none,
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: BorderSide(
            color: Colors.white.withValues(alpha: 0.1),
          ),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: BorderSide(color: colorScheme.primary),
        ),
      ),
      dropdownMenuTheme: DropdownMenuThemeData(
        inputDecorationTheme: InputDecorationTheme(
          filled: true,
          fillColor: Colors.white.withValues(alpha: 0.05),
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(12),
            borderSide: BorderSide.none,
          ),
        ),
      ),
    );
  }
}

/// App shell — wraps the home page (placeholder for now, actual import in main.dart).
class _AppShell extends StatelessWidget {
  const _AppShell();

  @override
  Widget build(BuildContext context) {
    // This will be overridden by the actual home import in main.dart
    return const Scaffold(
      body: Center(child: CircularProgressIndicator()),
    );
  }
}