import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class AppTheme {
  // Brand Colors
  static const Color primaryGreen = Color(0xFF2E7D32);
  static const Color primaryGold = Color(0xFFFFD700);
  static const Color accentBlue = Color(0xFF1976D2);
  static const Color accentOrange = Color(0xFFF57C00);
  static const Color accentRed = Color(0xFFD32F2F);

  // Light Theme Colors
  static const Color lightBackground = Color(0xFFFAFAFA);
  static const Color lightSurface = Color(0xFFFFFFFF);
  static const Color lightPrimary = primaryGreen;
  static const Color lightOnPrimary = Color(0xFFFFFFFF);

  // Dark Theme Colors
  static const Color darkBackground = Color(0xFF121212);
  static const Color darkSurface = Color(0xFF1E1E1E);
  static const Color darkPrimary = Color(0xFF4CAF50);
  static const Color darkOnPrimary = Color(0xFF000000);

  /// Light Theme
  static ThemeData get lightTheme {
    return ThemeData(
      useMaterial3: true,
      brightness: Brightness.light,
      primaryColor: lightPrimary,
      scaffoldBackgroundColor: lightBackground,
      
      // Color Scheme
      colorScheme: const ColorScheme.light(
        primary: lightPrimary,
        secondary: accentBlue,
        tertiary: accentOrange,
        error: accentRed,
        surface: lightSurface,
        onPrimary: lightOnPrimary,
        onSecondary: Colors.white,
        onSurface: Color(0xFF212121),
        onError: Colors.white,
      ),

      // AppBar Theme
      appBarTheme: AppBarTheme(
        elevation: 2,
        centerTitle: false,
        backgroundColor: lightPrimary,
        foregroundColor: Colors.white,
        titleTextStyle: TextStyle(
          fontSize: 18.sp,
          fontWeight: FontWeight.w600,
          color: Colors.white,
        ),
        iconTheme: IconThemeData(
          color: Colors.white,
          size: 24.w,
        ),
      ),

      // Card Theme
      cardTheme: CardTheme(
        elevation: 2,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
        color: lightSurface,
        margin: EdgeInsets.symmetric(horizontal: 8.w, vertical: 4.h),
      ),

      // Elevated Button Theme
      elevatedButtonTheme: ElevatedButtonThemeData(
        style: ElevatedButton.styleFrom(
          backgroundColor: lightPrimary,
          foregroundColor: lightOnPrimary,
          elevation: 2,
          padding: EdgeInsets.symmetric(horizontal: 24.w, vertical: 12.h),
          textStyle: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12.r),
          ),
        ),
      ),

      // Outlined Button Theme
      outlinedButtonTheme: OutlinedButtonThemeData(
        style: OutlinedButton.styleFrom(
          foregroundColor: lightPrimary,
          side: BorderSide(color: lightPrimary, width: 2),
          padding: EdgeInsets.symmetric(horizontal: 24.w, vertical: 12.h),
          textStyle: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12.r),
          ),
        ),
      ),

      // Text Button Theme
      textButtonTheme: TextButtonThemeData(
        style: TextButton.styleFrom(
          foregroundColor: lightPrimary,
          padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 8.h),
          textStyle: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
        ),
      ),

      // Input Decoration Theme
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: Colors.grey.shade50,
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: BorderSide(color: Colors.grey.shade300),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: BorderSide(color: Colors.grey.shade300),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: const BorderSide(color: lightPrimary, width: 2),
        ),
        errorBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: const BorderSide(color: accentRed, width: 2),
        ),
        contentPadding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 16.h),
      ),

      // Icon Theme
      iconTheme: IconThemeData(
        color: Colors.grey.shade700,
        size: 24.w,
      ),

      // Floating Action Button Theme
      floatingActionButtonTheme: FloatingActionButtonThemeData(
        backgroundColor: lightPrimary,
        foregroundColor: lightOnPrimary,
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
      ),

      // Bottom Navigation Bar Theme
      bottomNavigationBarTheme: BottomNavigationBarThemeData(
        backgroundColor: lightSurface,
        selectedItemColor: lightPrimary,
        unselectedItemColor: Colors.grey.shade600,
        selectedLabelStyle: TextStyle(fontSize: 12.sp, fontWeight: FontWeight.w600),
        unselectedLabelStyle: TextStyle(fontSize: 12.sp),
        type: BottomNavigationBarType.fixed,
        elevation: 8,
      ),

      // Divider Theme
      dividerTheme: DividerThemeData(
        color: Colors.grey.shade300,
        thickness: 1,
        space: 1,
      ),

      // Chip Theme
      chipTheme: ChipThemeData(
        backgroundColor: Colors.grey.shade200,
        selectedColor: lightPrimary.withOpacity(0.2),
        labelStyle: TextStyle(fontSize: 14.sp),
        padding: EdgeInsets.symmetric(horizontal: 12.w, vertical: 8.h),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
      ),

      // Dialog Theme
      dialogTheme: DialogTheme(
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
      ),

      // Snackbar Theme
      snackBarTheme: SnackBarThemeData(
        backgroundColor: Colors.grey.shade800,
        contentTextStyle: TextStyle(fontSize: 14.sp, color: Colors.white),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12.r),
        ),
        behavior: SnackBarBehavior.floating,
      ),
    );
  }

  /// Dark Theme
  static ThemeData get darkTheme {
    return ThemeData(
      useMaterial3: true,
      brightness: Brightness.dark,
      primaryColor: darkPrimary,
      scaffoldBackgroundColor: darkBackground,
      
      // Color Scheme
      colorScheme: const ColorScheme.dark(
        primary: darkPrimary,
        secondary: accentBlue,
        tertiary: accentOrange,
        error: accentRed,
        surface: darkSurface,
        onPrimary: darkOnPrimary,
        onSecondary: Colors.white,
        onSurface: Color(0xFFE0E0E0),
        onError: Colors.white,
      ),

      // AppBar Theme
      appBarTheme: AppBarTheme(
        elevation: 0,
        centerTitle: false,
        backgroundColor: darkSurface,
        foregroundColor: Colors.white,
        titleTextStyle: TextStyle(
          fontSize: 18.sp,
          fontWeight: FontWeight.w600,
          color: Colors.white,
        ),
        iconTheme: IconThemeData(
          color: Colors.white,
          size: 24.w,
        ),
      ),

      // Card Theme
      cardTheme: CardTheme(
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
        color: darkSurface,
        margin: EdgeInsets.symmetric(horizontal: 8.w, vertical: 4.h),
      ),

      // Elevated Button Theme
      elevatedButtonTheme: ElevatedButtonThemeData(
        style: ElevatedButton.styleFrom(
          backgroundColor: darkPrimary,
          foregroundColor: darkOnPrimary,
          elevation: 2,
          padding: EdgeInsets.symmetric(horizontal: 24.w, vertical: 12.h),
          textStyle: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12.r),
          ),
        ),
      ),

      // Outlined Button Theme
      outlinedButtonTheme: OutlinedButtonThemeData(
        style: OutlinedButton.styleFrom(
          foregroundColor: darkPrimary,
          side: BorderSide(color: darkPrimary, width: 2),
          padding: EdgeInsets.symmetric(horizontal: 24.w, vertical: 12.h),
          textStyle: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12.r),
          ),
        ),
      ),

      // Text Button Theme
      textButtonTheme: TextButtonThemeData(
        style: TextButton.styleFrom(
          foregroundColor: darkPrimary,
          padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 8.h),
          textStyle: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
        ),
      ),

      // Input Decoration Theme
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: const Color(0xFF2C2C2C),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: const BorderSide(color: Color(0xFF424242)),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: const BorderSide(color: Color(0xFF424242)),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: const BorderSide(color: darkPrimary, width: 2),
        ),
        errorBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.r),
          borderSide: const BorderSide(color: accentRed, width: 2),
        ),
        contentPadding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 16.h),
      ),

      // Icon Theme
      iconTheme: IconThemeData(
        color: Colors.grey.shade400,
        size: 24.w,
      ),

      // Floating Action Button Theme
      floatingActionButtonTheme: FloatingActionButtonThemeData(
        backgroundColor: darkPrimary,
        foregroundColor: darkOnPrimary,
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
      ),

      // Bottom Navigation Bar Theme
      bottomNavigationBarTheme: BottomNavigationBarThemeData(
        backgroundColor: darkSurface,
        selectedItemColor: darkPrimary,
        unselectedItemColor: Colors.grey.shade500,
        selectedLabelStyle: TextStyle(fontSize: 12.sp, fontWeight: FontWeight.w600),
        unselectedLabelStyle: TextStyle(fontSize: 12.sp),
        type: BottomNavigationBarType.fixed,
        elevation: 8,
      ),

      // Divider Theme
      dividerTheme: const DividerThemeData(
        color: Color(0xFF424242),
        thickness: 1,
        space: 1,
      ),

      // Chip Theme
      chipTheme: ChipThemeData(
        backgroundColor: const Color(0xFF2C2C2C),
        selectedColor: darkPrimary.withOpacity(0.2),
        labelStyle: TextStyle(fontSize: 14.sp, color: Colors.white),
        padding: EdgeInsets.symmetric(horizontal: 12.w, vertical: 8.h),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
      ),

      // Dialog Theme
      dialogTheme: DialogTheme(
        backgroundColor: darkSurface,
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16.r),
        ),
      ),

      // Snackbar Theme
      snackBarTheme: SnackBarThemeData(
        backgroundColor: const Color(0xFF323232),
        contentTextStyle: TextStyle(fontSize: 14.sp, color: Colors.white),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12.r),
        ),
        behavior: SnackBarBehavior.floating,
      ),
    );
  }
}