LanMountainDesktop/LanMountainDesktop.Launcher/Views/MultiInstancePromptWindow.axaml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:views="clr-namespace:LanMountainDesktop.Launcher.Views"
        xmlns:ui="using:FluentAvalonia.UI.Controls"
        xmlns:fi="using:FluentIcons.Avalonia"
        xmlns:res="clr-namespace:LanMountainDesktop.Launcher.Resources"
        mc:Ignorable="d"
        x:Class="LanMountainDesktop.Launcher.Views.MultiInstancePromptWindow"
        x:DataType="views:MultiInstancePromptWindow"
        x:CompileBindings="False"
        Title="{x:Static res:Strings.MultiInstance_Title}"
        Width="620"
        Height="360"
        MinWidth="560"
        MinHeight="330"
        CanResize="False"
        WindowStartupLocation="CenterScreen"
        Background="{DynamicResource SolidBackgroundFillColorBaseBrush}"
        TransparencyLevelHint="Mica, AcrylicBlur, None"
        Icon="/Assets/logo.ico">

  <Window.Resources>
    <!-- Override design corner radius to Fluent values for robustness -->
    <CornerRadius x:Key="DesignCornerRadiusMicro">2</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusXs">4</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusSm">4</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusMd">8</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusLg">8</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusXl">12</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusIsland">16</CornerRadius>
    <CornerRadius x:Key="DesignCornerRadiusComponent">8</CornerRadius>
    <CornerRadius x:Key="OverlayCornerRadius">8</CornerRadius>
    <CornerRadius x:Key="ControlCornerRadius">4</CornerRadius>
  </Window.Resources>

  <Design.DataContext>
    <views:MultiInstancePromptWindow />
  </Design.DataContext>

  <Grid RowDefinitions="*,Auto">
    <Grid Grid.Row="0"
          Margin="28,26,28,20"
          RowDefinitions="Auto,Auto,*"
          ColumnDefinitions="Auto,*">
      <Border Grid.Column="0"
              Width="52"
              Height="52"
              Margin="0,0,18,0"
              Background="{DynamicResource SystemFillColorAttentionBackgroundBrush}"
              CornerRadius="26"
              VerticalAlignment="Top">
        <fi:SymbolIcon Symbol="Desktop"
                       IconVariant="Regular"
                       FontSize="26"
                       Foreground="{DynamicResource SystemFillColorAttentionBrush}"
                       HorizontalAlignment="Center"
                       VerticalAlignment="Center" />
      </Border>

      <StackPanel Grid.Column="1"
                  Spacing="8">
        <TextBlock Text="{x:Static res:Strings.MultiInstance_AlreadyRunning}"
                   FontSize="22"
                   FontWeight="SemiBold"
                   Foreground="{DynamicResource TextFillColorPrimaryBrush}"
                   TextWrapping="Wrap" />
        <TextBlock x:Name="MessageText"
                   Text="{x:Static res:Strings.MultiInstance_AlreadyRunningMessage}"
                   FontSize="14"
                   Foreground="{DynamicResource TextFillColorSecondaryBrush}"
                   TextWrapping="Wrap"
                   LineHeight="22" />
      </StackPanel>

      <ui:FAInfoBar Grid.Row="1"
                    Grid.Column="0"
                    Grid.ColumnSpan="2"
                    Margin="0,22,0,14"
                    IsOpen="True"
                    IsClosable="False"
                    Severity="Informational"
                    Title="{x:Static res:Strings.MultiInstance_RepeatedLaunchTitle}"
                    Message="{x:Static res:Strings.MultiInstance_RepeatedLaunchMessage}">
        <ui:FAInfoBar.IconSource>
          <ui:FAFontIconSource Glyph="&#xF0288;"
                               FontFamily="avares://fluenticons.resources.avalonia/Assets#Seagull Fluent Icons" />
        </ui:FAInfoBar.IconSource>
      </ui:FAInfoBar>

      <TextBlock x:Name="DetailsText"
                 Grid.Row="2"
                 Grid.Column="0"
                 Grid.ColumnSpan="2"
                 FontSize="12"
                 Foreground="{DynamicResource TextFillColorSecondaryBrush}"
                 TextWrapping="Wrap"
                 Text="{x:Static res:Strings.MultiInstance_NoSecondProcess}" />
    </Grid>

    <Border Grid.Row="1"
            Padding="18,14"
            Background="{DynamicResource LayerOnMicaBaseAltFillColorDefaultBrush}">
      <Grid ColumnDefinitions="*,Auto">
        <Button x:Name="CopyDetailsButton"
                Grid.Column="0"
                MinWidth="104"
                Height="34"
                HorizontalAlignment="Left">
          <StackPanel Orientation="Horizontal" Spacing="6">
            <fi:SymbolIcon Symbol="Copy" IconVariant="Regular" FontSize="16"/>
            <TextBlock Text="{x:Static res:Strings.MultiInstance_ButtonCopy}"/>
          </StackPanel>
        </Button>

        <StackPanel Grid.Column="1"
                    Orientation="Horizontal"
                    Spacing="8">
          <Button x:Name="CloseButton"
                  MinWidth="92"
                  Height="34">
            <StackPanel Orientation="Horizontal" Spacing="6">
              <fi:SymbolIcon Symbol="Dismiss" IconVariant="Regular" FontSize="16"/>
              <TextBlock Text="{x:Static res:Strings.MultiInstance_ButtonClose}"/>
            </StackPanel>
          </Button>
          <Button x:Name="OpenDesktopButton"
                  Classes="accent"
                  MinWidth="136"
                  Height="34">
            <StackPanel Orientation="Horizontal" Spacing="6">
              <fi:SymbolIcon Symbol="ArrowRight" IconVariant="Regular" FontSize="16"/>
              <TextBlock Text="{x:Static res:Strings.MultiInstance_ButtonOpenDesktop}"/>
            </StackPanel>
          </Button>
        </StackPanel>
      </Grid>
    </Border>
  </Grid>
</Window>