MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="Calculator.MainPage"
             BackgroundColor="Black">

    <ContentPage.Resources>
        <ResourceDictionary>
            <Style x:Key="CalculatorButtonStyle" TargetType="Button">
                <Setter Property="WidthRequest" Value="75" />
                <Setter Property="HeightRequest" Value="75" />
                <Setter Property="BackgroundColor" Value="#333333" />
                <Setter Property="TextColor" Value="White" />
                <Setter Property="CornerRadius" Value="38" />
                <Setter Property="FontSize" Value="24" />
                <Setter Property="Margin" Value="5" />
                <Setter Property="Button.Shadow">
                    <Setter.Value>
                        <Shadow Brush="Gray" Opacity="0.8" Offset="5,5" Radius="5"/>
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <Trigger TargetType="Button" Property="IsPressed" Value="True">
                        <Setter Property="Opacity" Value="0.5"/>
                    </Trigger>
                </Style.Triggers>
            </Style>
        </ResourceDictionary>
    </ContentPage.Resources>

    <StackLayout>
        <StackLayout Orientation="Vertical" HorizontalOptions="FillAndExpand">
            <Label x:Name="tempDisplayLabel" FontSize="24" HorizontalOptions="Center" VerticalOptions="CenterAndExpand" Text="{Binding TempDisplay}" TextColor="White" Padding="10"/>
            <Label x:Name="displayTextLabel" FontSize="48" HorizontalOptions="Center" VerticalOptions="CenterAndExpand" Text="{Binding DisplayText}" TextColor="White" Padding="10"/>
        </StackLayout>
        <Grid HorizontalOptions="Center" VerticalOptions="Center" Padding="20">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto" />
                <RowDefinition Height="Auto" />
            </Grid.RowDefinitions>

            <!-- Number Buttons -->
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="7" Grid.Column="0" Grid.Row="0" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="8" Grid.Column="1" Grid.Row="0" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="9" Grid.Column="2" Grid.Row="0" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="4" Grid.Column="0" Grid.Row="1" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="5" Grid.Column="1" Grid.Row="1" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="6" Grid.Column="2" Grid.Row="1" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="1" Grid.Column="0" Grid.Row="2" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="2" Grid.Column="1" Grid.Row="2" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="3" Grid.Column="2" Grid.Row="2" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="0" Grid.Column="0" Grid.Row="3" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="." Grid.Column="1" Grid.Row="3" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="=" Grid.Column="2" Grid.Row="3" BackgroundColor="#FF9500" Clicked="Button_Click"/>

            <!-- Operation Buttons -->
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="÷" Grid.Column="3" Grid.Row="0" BackgroundColor="#FF9500" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="×" Grid.Column="3" Grid.Row="1" BackgroundColor="#FF9500" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="−" Grid.Column="3" Grid.Row="2" BackgroundColor="#FF9500" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="+" Grid.Column="3" Grid.Row="3" BackgroundColor="#FF9500" Clicked="Button_Click"/>

            <!-- Other Functions -->
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="x²" Grid.Column="0" Grid.Row="4" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="√" Grid.Column="1" Grid.Row="4" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="xʸ" Grid.Column="2" Grid.Row="4" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="ʸ√x" Grid.Column="3" Grid.Row="4" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="cos" Grid.Column="0" Grid.Row="5" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="sin" Grid.Column="1" Grid.Row="5" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="tan" Grid.Column="2" Grid.Row="5" BackgroundColor="#FF9500" HeightRequest="55" Clicked="Button_Click"/>
            <Button Style="{StaticResource CalculatorButtonStyle}" Text="C" Grid.Column="3" Grid.Row="5" BackgroundColor="Red" HeightRequest="55" Clicked="Button_Click"/>
        </Grid>
    </StackLayout>
</ContentPage>