content: import 'package:flutter/material.dart';
  
  const Color lightPrimary = Color(0xffF5F5F5);
  const Color darkPrimary = Color(0xff1f1f1f);
  const Color lightAccent = Color(0xff2ca8e2);
  const Color darkAccent = Color(0xff2ca8e2);
  const Color lightBG = Colors.white;
  const Color darkBG = Color(0xff121212);
  const Color smokeWhite = Color(0xffF5F5F5);
  
  final ThemeData lightTheme = ThemeData(
    colorScheme: ColorScheme.fromSwatch().copyWith(
      secondary: lightBG,
      brightness: Brightness.light,
    ),
    useMaterial3: false,
    primaryColor: lightPrimary,
    scaffoldBackgroundColor: lightBG,
    navigationRailTheme: const NavigationRailThemeData(
      backgroundColor: smokeWhite,
    ),
    tabBarTheme: const TabBarTheme(
      labelColor: Colors.black,
      unselectedLabelColor: Colors.grey,
      indicator: UnderlineTabIndicator(
        borderSide: BorderSide(
          color: lightAccent,
          width: 2.0,
        ),
      ),
    ),
    appBarTheme: const AppBarTheme(
      color: lightPrimary,
      elevation: 0.0,
      titleTextStyle: TextStyle(
        color: Colors.black,
        fontSize: 20,
        fontWeight: FontWeight.w800,
      ),
      iconTheme: IconThemeData(color: Colors.black),
    ),
  );
  
  final ThemeData darkTheme = ThemeData(
    brightness: Brightness.dark,
    colorScheme: ColorScheme.fromSwatch().copyWith(
      secondary: darkBG,
      brightness: Brightness.dark,
    ),
    useMaterial3: false,
    primaryColor: darkPrimary,
    scaffoldBackgroundColor: darkBG,
    navigationRailTheme: const NavigationRailThemeData(
      backgroundColor: darkPrimary,
    ),
    tabBarTheme: const TabBarTheme(
      indicator: UnderlineTabIndicator(
        borderSide: BorderSide(
          color: lightAccent,
          width: 2.0,
        ),
      ),
    ),
    appBarTheme: const AppBarTheme(
      color: darkPrimary,
      elevation: 0.0,
      titleTextStyle: TextStyle(
        color: Colors.white,
        fontSize: 20,
        fontWeight: FontWeight.w800,
      ),
      iconTheme: IconThemeData(color: Colors.white),
    ),
  );
  