App.xaml

<Application x:Class="HandshakeDVPN.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <!-- ═══ Handshake Black & White Theme ═══ -->
        <SolidColorBrush x:Key="Bg0" Color="#FFFFFF"/>
        <SolidColorBrush x:Key="Bg1" Color="#FAFAFA"/>
        <SolidColorBrush x:Key="Bg2" Color="#F2F2F2"/>
        <SolidColorBrush x:Key="Bg3" Color="#E8E8E8"/>
        <SolidColorBrush x:Key="Bg4" Color="#D9D9D9"/>
        <SolidColorBrush x:Key="Bdr" Color="#E0E0E0"/>
        <SolidColorBrush x:Key="BdrH" Color="#C0C0C0"/>
        <SolidColorBrush x:Key="T1" Color="#000000"/>
        <SolidColorBrush x:Key="T2" Color="#555555"/>
        <SolidColorBrush x:Key="T3" Color="#999999"/>
        <SolidColorBrush x:Key="Acc" Color="#000000"/>
        <SolidColorBrush x:Key="AccDim" Color="#14000000"/>
        <SolidColorBrush x:Key="AccLight" Color="#F0F0F0"/>
        <SolidColorBrush x:Key="Blue" Color="#4F8FFF"/>
        <SolidColorBrush x:Key="BlueDim" Color="#1A4F8FFF"/>
        <SolidColorBrush x:Key="Green" Color="#22C55E"/>
        <SolidColorBrush x:Key="GreenDim" Color="#1422C55E"/>
        <SolidColorBrush x:Key="Red" Color="#DC2626"/>
        <SolidColorBrush x:Key="RedDim" Color="#1ADC2626"/>
        <SolidColorBrush x:Key="Amber" Color="#D97706"/>
        <SolidColorBrush x:Key="AmberDim" Color="#1AD97706"/>

        <!-- ─── Fonts ─── -->
        <FontFamily x:Key="Sans">pack://application:,,,/Fonts/#Inter</FontFamily>
        <FontFamily x:Key="Mono">Cascadia Code, Consolas, monospace</FontFamily>
        <FontFamily x:Key="Emoji">Segoe UI Emoji</FontFamily>

        <!-- ─── Primary Button (Black) ─── -->
        <Style x:Key="BtnAcc" TargetType="Button">
            <Setter Property="Background" Value="{StaticResource Acc}"/>
            <Setter Property="Foreground" Value="White"/>
            <Setter Property="FontFamily" Value="{StaticResource Sans}"/>
            <Setter Property="FontSize" Value="13"/>
            <Setter Property="FontWeight" Value="SemiBold"/>
            <Setter Property="Padding" Value="20,11"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}" CornerRadius="8" Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True"><Setter Property="Background" Value="#333333"/></Trigger>
                <Trigger Property="IsEnabled" Value="False"><Setter Property="Background" Value="{StaticResource Bg4}"/><Setter Property="Foreground" Value="{StaticResource T3}"/></Trigger>
            </Style.Triggers>
        </Style>

        <!-- ─── Ghost Button ─── -->
        <Style x:Key="BtnGhost" TargetType="Button">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Foreground" Value="{StaticResource T3}"/>
            <Setter Property="FontFamily" Value="{StaticResource Sans}"/>
            <Setter Property="FontSize" Value="11"/>
            <Setter Property="Padding" Value="8,4"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}" BorderBrush="{StaticResource Bdr}" BorderThickness="1" CornerRadius="6" Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True"><Setter Property="Foreground" Value="{StaticResource T1}"/></Trigger>
            </Style.Triggers>
        </Style>

        <!-- ─── Light TextBox ─── -->
        <Style x:Key="TbLight" TargetType="TextBox">
            <Setter Property="Background" Value="{StaticResource Bg0}"/>
            <Setter Property="Foreground" Value="{StaticResource T1}"/>
            <Setter Property="BorderBrush" Value="{StaticResource Bdr}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="Padding" Value="12,10"/>
            <Setter Property="FontFamily" Value="{StaticResource Mono}"/>
            <Setter Property="FontSize" Value="12"/>
            <Setter Property="CaretBrush" Value="{StaticResource T1}"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="TextBox">
                        <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="8" Padding="{TemplateBinding Padding}">
                            <ScrollViewer x:Name="PART_ContentHost"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <!-- ─── Filter Button ─── -->
        <Style x:Key="FilterBtn" TargetType="Button">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="Foreground" Value="{StaticResource T3}"/>
            <Setter Property="FontFamily" Value="{StaticResource Sans}"/>
            <Setter Property="FontSize" Value="11"/>
            <Setter Property="FontWeight" Value="Medium"/>
            <Setter Property="Padding" Value="0,6"/>
            <Setter Property="Cursor" Value="Hand"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}" BorderBrush="Transparent" BorderThickness="1" CornerRadius="6" Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="Center"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True"><Setter Property="Foreground" Value="{StaticResource T1}"/></Trigger>
            </Style.Triggers>
        </Style>
    </Application.Resources>
</Application>