import 'package:flutter/material.dart';

/// Charte inspirée du prototype web (dégradé violet, cartes blanches).
abstract final class AppTheme {
  static const primaryGradient = LinearGradient(
    begin: Alignment.topLeft,
    end: Alignment.bottomRight,
    colors: [Color(0xFF667EEA), Color(0xFF764BA2)],
  );

  static const childColors = [
    '#6C63FF',
    '#E91E8C',
    '#2196F3',
    '#FF9800',
    '#4CAF50',
    '#9C27B0',
    '#00BCD4',
    '#F44336',
  ];

  static Color parseColor(String hex) {
    final value = hex.replaceFirst('#', '');
    return Color(int.parse('FF$value', radix: 16));
  }

  static ThemeData light() {
    final seed = parseColor('#667EEA');
    return ThemeData(
      useMaterial3: true,
      colorScheme: ColorScheme.fromSeed(
        seedColor: seed,
        brightness: Brightness.light,
      ),
      scaffoldBackgroundColor: seed,
      appBarTheme: const AppBarTheme(
        backgroundColor: Colors.transparent,
        foregroundColor: Colors.white,
        elevation: 0,
        centerTitle: true,
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: Colors.white,
        border: OutlineInputBorder(borderRadius: BorderRadius.circular(16)),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(16),
          borderSide: BorderSide(color: Colors.white.withValues(alpha: 0.3)),
        ),
      ),
      cardTheme: CardThemeData(
        color: Colors.white,
        elevation: 4,
        shadowColor: Colors.black26,
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
      ),
      filledButtonTheme: FilledButtonThemeData(
        style: FilledButton.styleFrom(
          backgroundColor: Colors.white,
          foregroundColor: seed,
          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 14),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(24),
          ),
          textStyle: const TextStyle(fontWeight: FontWeight.w700, fontSize: 16),
        ),
      ),
      textButtonTheme: TextButtonThemeData(
        style: TextButton.styleFrom(foregroundColor: Colors.white),
      ),
    );
  }
}