Win11Debloat/Schemas/MessageBoxWindow.xaml

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MessageBox" 
        Width="440"
        SizeToContent="Height"
        ResizeMode="NoResize"
        WindowStartupLocation="CenterScreen"
        WindowStyle="None"
        AllowsTransparency="True"
        Background="Transparent"
        Topmost="True"
        ShowInTaskbar="False">
    
    <Window.Resources>
        <!-- Button Style -->
        <Style x:Key="MessageBoxButton" TargetType="Button">
            <Setter Property="Background" Value="{DynamicResource SecondaryButtonBg}"/>
            <Setter Property="Foreground" Value="{DynamicResource FgColor}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ButtonBorderColor}"/>
            <Setter Property="Padding" Value="0"/>
            <Setter Property="FontSize" Value="14"/>
            <Setter Property="Height" Value="32"/>
            <Setter Property="MinWidth" Value="80"/>
            <Setter Property="Margin" Value="4,0"/>
            <Setter Property="FontWeight" Value="Normal"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border x:Name="Border" 
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="4"
                                Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="Border" Property="Background" Value="{DynamicResource SecondaryButtonHover}"/>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter TargetName="Border" Property="Background" Value="{DynamicResource SecondaryButtonPressed}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- Primary Button Style -->
        <Style x:Key="PrimaryMessageBoxButton" TargetType="Button" BasedOn="{StaticResource MessageBoxButton}">
            <Setter Property="Background" Value="{DynamicResource ButtonBg}"/>
            <Setter Property="Foreground" Value="white"/>
            <Setter Property="BorderBrush" Value="{DynamicResource ButtonBg}"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}" 
                                BorderBrush="{TemplateBinding BorderBrush}" 
                                BorderThickness="{TemplateBinding BorderThickness}"
                                CornerRadius="4"
                                Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" Margin="0,0,0,1"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsEnabled" Value="False">
                    <Setter Property="Background" Value="{DynamicResource ButtonDisabled}"/>
                    <Setter Property="BorderBrush" Value="{DynamicResource ButtonDisabled}"/>
                    <Setter Property="Foreground" Value="{DynamicResource ButtonTextDisabled}"/>
                </Trigger>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Background" Value="{DynamicResource ButtonHover}"/>
                    <Setter Property="BorderBrush" Value="{DynamicResource ButtonHover}"/>
                </Trigger>
                <Trigger Property="IsPressed" Value="True">
                    <Setter Property="Background" Value="{DynamicResource ButtonPressed}"/>
                    <Setter Property="BorderBrush" Value="{DynamicResource ButtonPressed}"/>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>

    <Border BorderBrush="{DynamicResource BorderColor}" 
            BorderThickness="1" 
            CornerRadius="8"
            Background="{DynamicResource CardBgColor}"
            Margin="25">
        <Border.Effect>
            <DropShadowEffect Color="Black" 
                            Opacity="0.15" 
                            BlurRadius="20" 
                            ShadowDepth="0" 
                            Direction="0"/>
        </Border.Effect>
        
        <Grid Margin="0">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>

            <!-- Title Bar -->
            <Grid Grid.Row="0" x:Name="TitleBar" Height="40" Background="Transparent">
                <TextBlock x:Name="TitleText" 
                           Text="Message" 
                           Foreground="{DynamicResource FgColor}"
                           FontSize="16"
                           FontWeight="SemiBold"
                           VerticalAlignment="Center" 
                           Margin="16,0,0,0"/>
            </Grid>

            <!-- Message Content -->
            <Grid Grid.Row="1" Margin="24,12,24,20">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>

                <!-- Icon -->
                <TextBlock x:Name="IconText"
                           Grid.Column="0"
                           FontFamily="Segoe Fluent Icons"
                           FontSize="24"
                           Foreground="{DynamicResource FgColor}"
                           VerticalAlignment="Center"
                           Margin="0,2,14,0"
                           Visibility="Collapsed"/>

                <!-- Message Text -->
                <TextBlock x:Name="MessageText"
                           Grid.Column="1"
                           Text="Message content goes here"
                           TextWrapping="Wrap"
                           FontSize="14"
                           LineHeight="20"
                           Foreground="{DynamicResource FgColor}"
                           VerticalAlignment="Center"/>
            </Grid>

            <!-- Button Panel -->
            <Border Grid.Row="2" 
                    Background="{DynamicResource BgColor}"
                    BorderBrush="{DynamicResource BorderColor}"
                    BorderThickness="0,1,0,0"
                    Padding="16,12"
                    CornerRadius="0,0,8,8">
                <StackPanel x:Name="ButtonPanel"
                            Orientation="Horizontal"
                            HorizontalAlignment="Right">
                    <Button x:Name="Button1" 
                            Content="OK" 
                            Style="{StaticResource PrimaryMessageBoxButton}"/>
                    <Button x:Name="Button2" 
                            Content="Cancel" 
                            Style="{StaticResource MessageBoxButton}"
                            Visibility="Collapsed"/>
                </StackPanel>
            </Border>
        </Grid>
    </Border>
</Window>