ClaudeDo/src/ClaudeDo.Installer/Views/WizardWindow.xaml

<Window x:Class="ClaudeDo.Installer.Views.WizardWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:views="clr-namespace:ClaudeDo.Installer.Views"
        xmlns:loc="clr-namespace:ClaudeDo.Installer.Localization"
        Title="ClaudeDo Installer"
        Icon="/ClaudeTaskSetup.ico"
        Width="720" Height="520"
        MinWidth="620" MinHeight="460"
        WindowStartupLocation="CenterScreen"
        Background="{StaticResource WindowBgBrush}"
        Foreground="{StaticResource TextPrimaryBrush}"
        FontFamily="Segoe UI"
        FontSize="13"
        d:DataContext="{d:DesignInstance views:WizardViewModel}"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d">

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <!-- Step Indicator -->
        <Border Grid.Row="0" Background="{StaticResource IslandBgBrush}"
                BorderBrush="{StaticResource BorderSubtleBrush}" BorderThickness="0,0,0,1"
                Padding="20,14">
            <DockPanel>
                <ComboBox DockPanel.Dock="Right"
                          ItemsSource="{Binding Languages}"
                          SelectedItem="{Binding SelectedLanguage, Mode=TwoWay}"
                          DisplayMemberPath="Name"
                          Width="150" HorizontalAlignment="Right" VerticalAlignment="Center"/>
                <ItemsControl ItemsSource="{Binding Pages}">
                    <ItemsControl.ItemsPanel>
                        <ItemsPanelTemplate>
                            <StackPanel Orientation="Horizontal"/>
                        </ItemsPanelTemplate>
                    </ItemsControl.ItemsPanel>
                    <ItemsControl.ItemTemplate>
                        <DataTemplate>
                            <Border x:Name="StepBorder" CornerRadius="4" Padding="10,5" Margin="0,0,6,0"
                                    BorderThickness="1">
                                <Border.Background>
                                    <MultiBinding Converter="{StaticResource StepActiveConverter}" ConverterParameter="Background">
                                        <Binding/>
                                        <Binding RelativeSource="{RelativeSource AncestorType=Window}" Path="DataContext.CurrentPage"/>
                                    </MultiBinding>
                                </Border.Background>
                                <Border.BorderBrush>
                                    <MultiBinding Converter="{StaticResource StepActiveConverter}" ConverterParameter="BorderBrush">
                                        <Binding/>
                                        <Binding RelativeSource="{RelativeSource AncestorType=Window}" Path="DataContext.CurrentPage"/>
                                    </MultiBinding>
                                </Border.BorderBrush>
                                <TextBlock Text="{Binding Title}" FontSize="12">
                                    <TextBlock.Foreground>
                                        <MultiBinding Converter="{StaticResource StepActiveConverter}" ConverterParameter="Foreground">
                                            <Binding/>
                                            <Binding RelativeSource="{RelativeSource AncestorType=Window}" Path="DataContext.CurrentPage"/>
                                        </MultiBinding>
                                    </TextBlock.Foreground>
                                </TextBlock>
                            </Border>
                        </DataTemplate>
                    </ItemsControl.ItemTemplate>
                </ItemsControl>
            </DockPanel>
        </Border>

        <!-- Page Content -->
        <Border Grid.Row="1" Padding="24,20">
            <ContentControl Content="{Binding CurrentPage.View}"/>
        </Border>

        <!-- Bottom Bar -->
        <Border Grid.Row="2" Background="{StaticResource IslandBgBrush}"
                BorderBrush="{StaticResource BorderSubtleBrush}" BorderThickness="0,1,0,0"
                Padding="20,12">
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition Width="Auto"/>
                </Grid.ColumnDefinitions>

                <!-- Validation error -->
                <TextBlock Grid.Column="0" Text="{Binding ValidationError}"
                           Foreground="{StaticResource ErrorBrush}"
                           VerticalAlignment="Center" FontSize="12"
                           Visibility="{Binding ValidationError, Converter={StaticResource NullToCollapsedConverter}}"/>

                <Button Grid.Column="1" Content="{loc:Tr installer.nav.back}"
                        Command="{Binding GoBackCommand}"
                        IsEnabled="{Binding CanGoBack}"
                        Margin="0,0,8,0" MinWidth="80"/>

                <Button Grid.Column="2" Content="{Binding NextButtonText}"
                        Command="{Binding GoNextCommand}"
                        Style="{StaticResource AccentButton}"
                        MinWidth="100"/>
            </Grid>
        </Border>
    </Grid>
</Window>