// App.xaml.cs - Main Application with Theme Support using Microsoft.Maui.Controls; namespace WebViewDemo; public partial class App : Application { public App() { InitializeComponent(); } protected override Window CreateWindow(IActivationState? activationState) { return new Window(new WebViewPage()) { Title = "OpenMaui Browser" }; } public static void ToggleTheme() { if (Current is null) return; Current.UserAppTheme = Current.UserAppTheme == AppTheme.Dark ? AppTheme.Light : AppTheme.Dark; } }