Nitrox/Nitrox.Launcher/Models/Styles/Nitrox.axaml

<Styles
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:controls="clr-namespace:Nitrox.Launcher.Models.Controls"
    xmlns:converters="clr-namespace:Nitrox.Launcher.Models.Converters">
    <Design.PreviewWith>
        <Panel Background="Cornflowerblue">
            <StackPanel Margin="10" Spacing="10">
                <ThemeVariantScope RequestedThemeVariant="Light">
                    <ContentControl Padding="10" Background="#FFFFFF">
                        <StackPanel
                            HorizontalAlignment="Center"
                            VerticalAlignment="Center"
                            Orientation="Horizontal"
                            Spacing="10">
                            <TextBlock>Light</TextBlock>
                            <TextBox Watermark="Enter something here.." />
                        </StackPanel>
                    </ContentControl>
                </ThemeVariantScope>

                <ThemeVariantScope RequestedThemeVariant="Dark">
                    <ContentControl Padding="10" Background="#000000">
                        <StackPanel
                            HorizontalAlignment="Center"
                            VerticalAlignment="Center"
                            Orientation="Horizontal"
                            Spacing="10">
                            <TextBlock>Dark</TextBlock>
                            <TextBox Watermark="Enter something here.." />
                        </StackPanel>
                    </ContentControl>
                </ThemeVariantScope>
            </StackPanel>
        </Panel>
    </Design.PreviewWith>

    <Style Selector="Window">
        <Setter Property="Icon" Value="/Assets/Images/nitrox-icon.ico" />
        <Setter Property="Focusable" Value="True" />
        <Setter Property="WindowStartupLocation" Value="CenterOwner" />
        <Setter Property="FontFamily" Value="/Assets/Fonts/Inter-Black.ttf" />
        <!--  Disables window border but allow resizing  -->
        <Setter Property="Background" Value="{DynamicResource BrandWhite}" />
        <Setter Property="SystemDecorations">
            <Setter.Value>
                <OnPlatform>
                    <OnPlatform.Default>
                        <SystemDecorations>None</SystemDecorations>
                    </OnPlatform.Default>
                    <On Options="Windows">
                        <SystemDecorations>Full</SystemDecorations>
                    </On>
                </OnPlatform>
            </Setter.Value>
        </Setter>
        <Setter Property="ExtendClientAreaToDecorationsHint" Value="True" />
        <Setter Property="ExtendClientAreaTitleBarHeightHint" Value="-99" />
        <Setter Property="Padding" Value="{Binding $self.OffScreenMargin}" />
    </Style>

    <Style Selector="Border">
        <Setter Property="BorderBrush" Value="{DynamicResource BrandBorderBackground}" />
    </Style>

    <Style Selector="SelectableTextBlock">
        <!--  Background should be transparent so text and be selected anywhere inside of control.  -->
        <Setter Property="Background" Value="Transparent" />
    </Style>

    <Style Selector="controls|CustomTitlebar">
        <Setter Property="Background" Value="{DynamicResource BrandWhite}" />
    </Style>

    <Style Selector="Svg.theme">
        <Setter Property="Css" Value="{DynamicResource BrandSvgStyle}" />
    </Style>

    <Style Selector=":is(Border).footer">
        <Setter Property="Background" Value="{DynamicResource BrandControlBackground}" />
        <Setter Property="Padding" Value="24 20" />
        <Setter Property="BorderThickness" Value="0 2 0 0" />
        <Setter Property="BorderBrush" Value="{DynamicResource BrandWhite}" />
    </Style>

    <Style Selector=":is(Control)">
        <Setter Property="Opacity" Value="1" />

        <Style Selector="^ /template/ ContentPresenter">
            <Setter Property="Opacity" Value="{TemplateBinding Opacity}" />
        </Style>

        <!--  TODO: a good-looking focus overlay, compatible with all controls  -->
        <Setter Property="FocusAdorner">
            <Setter.Value>
                <FocusAdornerTemplate>
                    <Border
                        Name="FocusBorder"
                        BorderBrush="{DynamicResource BrandFocusBorder}"
                        BorderThickness="2" />
                </FocusAdornerTemplate>
            </Setter.Value>
        </Setter>

        <Style Selector="^:disabled">
            <Setter Property="Opacity" Value=".85" />
        </Style>
    </Style>

    <Style Selector=".form">
        <Style Selector="^ >  :is(Layoutable):not(:nth-last-child(1))">
            <Setter Property="Margin" Value="0 0 0 26" />
        </Style>
        <Style Selector="^ StackPanel.form >  TextBlock:nth-child(1)">
            <Setter Property="FontSize" Value="10" />
            <Setter Property="FontWeight" Value="700" />
            <Setter Property="Margin" Value="0 0 0 11" />
        </Style>
        <Style Selector="^ StackPanel.form >  TextBlock:nth-child(2)">
            <Setter Property="FontSize" Value="10" />
            <Setter Property="FontWeight" Value="500" />
            <Setter Property="Margin" Value="0 -11 0 11" />
            <Setter Property="IsVisible" Value="{Binding !$self.Text, Converter={converters:EqualityConverter}}" />
        </Style>
    </Style>

    <Style Selector="Image.header">
        <Setter Property="Width" Value="108" />
        <Setter Property="Height" Value="24" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Bottom" />
    </Style>

    <Style Selector=":is(ContentControl).content">
        <Setter Property="Background" Value="{DynamicResource BrandWhite}" />
        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
        <Setter Property="VerticalContentAlignment" Value="Stretch" />
    </Style>

    <Style Selector=":is(Layoutable).viewPadding">
        <Setter Property="Margin" Value="34 45" />
    </Style>

    <Style Selector="Border.serverEntry">
        <Setter Property="Background" Value="{DynamicResource BrandPanelBackground}" />
        <Setter Property="CornerRadius" Value="12" />
        <Setter Property="Padding" Value="22 20" />
        <Setter Property="HorizontalAlignment" Value="Stretch" />
        <Setter Property="Height" Value="96" />

        <Style Selector="^ StackPanel.description">
            <Style Selector="^ >  :is(Control)">
                <Setter Property="VerticalAlignment" Value="Center" />
                <Setter Property="Margin" Value="6 0" />
            </Style>
            <Style Selector="^ >  :is(Control):nth-child(1)">
                <Setter Property="Margin" Value="0 0 6 0" />
            </Style>
            <Style Selector="^ >  :is(Control):nth-last-child(1)">
                <Setter Property="Margin" Value="6 0 0 0" />
            </Style>
            <Style Selector="^ Ellipse">
                <Setter Property="Height" Value="6" />
                <Setter Property="Width" Value="6" />
            </Style>
            <Style Selector="^ TextBlock">
                <Setter Property="Opacity" Value="0.5" />
            </Style>
        </Style>
    </Style>

    <StyleInclude Source="/Models/Styles/Theme/ValidationErrorsStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/TextBoxStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/TextBlockStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/ToolTipStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/ButtonStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/ComboBoxStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/CheckBoxStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/RadioButtonGroupStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/RadioButtonStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/ScrollViewerStyle.axaml" />
    <StyleInclude Source="/Models/Styles/Theme/ExpanderStyle.axaml" />
</Styles>