CROWLER/App.xaml

<Application x:Class="CRAWLER.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             ShutdownMode="OnMainWindowClose">
    <Application.Resources>
        <LinearGradientBrush x:Key="AppWindowBackgroundBrush" StartPoint="0,0" EndPoint="1,1">
            <GradientStop Color="#FFDDE7F0" Offset="0" />
            <GradientStop Color="#FFC7D4E2" Offset="1" />
        </LinearGradientBrush>
        <SolidColorBrush x:Key="AppPanelBrush" Color="#FFF1F5FA" />
        <SolidColorBrush x:Key="AppSurfaceBrush" Color="#FFFDFEFF" />
        <SolidColorBrush x:Key="AppAccentBrush" Color="#FF4F7498" />
        <SolidColorBrush x:Key="AppBorderBrush" Color="#FFA7B7C8" />
        <SolidColorBrush x:Key="AppTextBrush" Color="#FF253748" />
        <SolidColorBrush x:Key="AppMutedTextBrush" Color="#FF697988" />
        <SolidColorBrush x:Key="AppPrimaryButtonBrush" Color="#FF5D84A9" />
        <SolidColorBrush x:Key="AppPrimaryButtonHoverBrush" Color="#FF6A92B8" />
        <SolidColorBrush x:Key="AppPrimaryButtonPressedBrush" Color="#FF496B8B" />
        <SolidColorBrush x:Key="AppButtonBrush" Color="#FFF7FAFD" />
        <SolidColorBrush x:Key="AppButtonHoverBrush" Color="#FFE8F0F8" />
        <SolidColorBrush x:Key="AppButtonPressedBrush" Color="#FFD7E5F2" />
        <SolidColorBrush x:Key="AppSelectionBrush" Color="#FFD9E7F3" />
        <SolidColorBrush x:Key="AppWarningBrush" Color="#FFB06C45" />
        <SolidColorBrush x:Key="AppSuccessBrush" Color="#FF468468" />
        <SolidColorBrush x:Key="AppDangerBrush" Color="#FFC26565" />

        <Style TargetType="{x:Type Window}">
            <Setter Property="Background" Value="{StaticResource AppWindowBackgroundBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppTextBrush}" />
            <Setter Property="FontFamily" Value="Segoe UI" />
        </Style>

        <Style TargetType="{x:Type TextBlock}">
            <Setter Property="Foreground" Value="{StaticResource AppTextBrush}" />
        </Style>

        <Style TargetType="{x:Type GroupBox}">
            <Setter Property="Background" Value="{StaticResource AppPanelBrush}" />
            <Setter Property="BorderBrush" Value="{StaticResource AppBorderBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppAccentBrush}" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type GroupBox}">
                        <Grid SnapsToDevicePixels="True">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                                <RowDefinition Height="*" />
                            </Grid.RowDefinitions>
                            <Border Grid.Row="1"
                                    Margin="0,3,0,0"
                                    Background="{TemplateBinding Background}"
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    BorderThickness="1"
                                    CornerRadius="4">
                                <ContentPresenter ContentSource="Content" />
                            </Border>
                            <Border Grid.Row="0"
                                    Margin="12,0,12,0"
                                    Padding="8,0"
                                    HorizontalAlignment="Left"
                                    Background="{StaticResource AppWindowBackgroundBrush}">
                                <ContentPresenter ContentSource="Header"
                                                  RecognizesAccessKey="True" />
                            </Border>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style TargetType="{x:Type Button}">
            <Setter Property="Background" Value="{StaticResource AppButtonBrush}" />
            <Setter Property="BorderBrush" Value="{StaticResource AppBorderBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppTextBrush}" />
            <Setter Property="Padding" Value="10,5" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border x:Name="Root"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="1"
                                CornerRadius="4">
                            <ContentPresenter Margin="{TemplateBinding Padding}"
                                              HorizontalAlignment="Center"
                                              VerticalAlignment="Center"
                                              RecognizesAccessKey="True" />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="Root" Property="Background" Value="{StaticResource AppButtonHoverBrush}" />
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter TargetName="Root" Property="Background" Value="{StaticResource AppButtonPressedBrush}" />
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="False">
                                <Setter TargetName="Root" Property="Opacity" Value="0.55" />
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="PrimaryActionButtonStyle" TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Type Button}}">
            <Setter Property="Background" Value="{StaticResource AppPrimaryButtonBrush}" />
            <Setter Property="BorderBrush" Value="#FF466B8C" />
            <Setter Property="Foreground" Value="#FFF8FBFE" />
            <Setter Property="FontWeight" Value="SemiBold" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border x:Name="Root"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="1"
                                CornerRadius="4">
                            <ContentPresenter Margin="{TemplateBinding Padding}"
                                              HorizontalAlignment="Center"
                                              VerticalAlignment="Center"
                                              RecognizesAccessKey="True" />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="Root" Property="Background" Value="{StaticResource AppPrimaryButtonHoverBrush}" />
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter TargetName="Root" Property="Background" Value="{StaticResource AppPrimaryButtonPressedBrush}" />
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="False">
                                <Setter TargetName="Root" Property="Opacity" Value="0.5" />
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style TargetType="{x:Type TextBox}">
            <Setter Property="Background" Value="{StaticResource AppSurfaceBrush}" />
            <Setter Property="BorderBrush" Value="{StaticResource AppBorderBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppTextBrush}" />
            <Setter Property="Padding" Value="6,4" />
        </Style>

        <Style TargetType="{x:Type ComboBox}">
            <Setter Property="Background" Value="{StaticResource AppSurfaceBrush}" />
            <Setter Property="BorderBrush" Value="{StaticResource AppBorderBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppTextBrush}" />
        </Style>

        <Style TargetType="{x:Type DataGrid}">
            <Setter Property="Background" Value="{StaticResource AppSurfaceBrush}" />
            <Setter Property="BorderBrush" Value="{StaticResource AppBorderBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppTextBrush}" />
            <Setter Property="GridLinesVisibility" Value="Horizontal" />
            <Setter Property="HeadersVisibility" Value="Column" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="AlternatingRowBackground" Value="#FFF6FAFD" />
            <Setter Property="SelectionUnit" Value="FullRow" />
            <Setter Property="SelectionMode" Value="Single" />
            <Setter Property="RowHeaderWidth" Value="0" />
        </Style>

        <Style TargetType="{x:Type StatusBar}">
            <Setter Property="Background" Value="{StaticResource AppPanelBrush}" />
            <Setter Property="BorderBrush" Value="{StaticResource AppBorderBrush}" />
            <Setter Property="Foreground" Value="{StaticResource AppMutedTextBrush}" />
        </Style>
    </Application.Resources>
</Application>