MainWindow.xaml

<?xml version="1.0" encoding="utf-8"?>
<Window
    x:Class="CodeFileSplitter.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:CodeFileSplitter"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
  >
    <Window.SystemBackdrop>
        <MicaBackdrop Kind="BaseAlt"/>
    </Window.SystemBackdrop>


    <Grid Padding="20">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <!-- Custom Title Bar -->
        <Grid x:Name="AppTitleBar" Height="48" VerticalAlignment="Top" Grid.Row="0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
        </Grid>
        <!-- Header -->
        <StackPanel Grid.Row="0" Spacing="4" Margin="0,0,0,16">
            <TextBlock Text="Code File Splitter" 
                       Style="{StaticResource TitleTextBlockStyle}" 
                       FontWeight="SemiBold"/>
            <TextBlock Text="Paste code with file headers (// filename.ext) to split into individual files" 
                       Style="{StaticResource BodyTextBlockStyle}" 
                       Opacity="0.8"/>
        </StackPanel>

        <!-- Code Input Area -->
        <Grid Grid.Row="1">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>

            <TextBlock Text="Paste your code here:" 
                       Style="{StaticResource SubtitleTextBlockStyle}" 
                       Margin="0,0,0,8" 
                       Grid.Row="0"/>

            <TextBox x:Name="CodeTextBox" 
                     Grid.Row="1" 
                     AcceptsReturn="True" 
                     TextWrapping="NoWrap"
                     IsSpellCheckEnabled="False"
                     FontFamily="Cascadia Code, Consolas, Courier New, monospace" 
                     PlaceholderText="// ViewTransitions.Blazor/BlazorViewTransitionService.cs&#x0a;using Microsoft.JSInterop;&#x0a;..."
                     ScrollViewer.HorizontalScrollBarVisibility="Auto"
                     ScrollViewer.VerticalScrollBarVisibility="Auto"
                     MinHeight="150"/>

            <StackPanel Grid.Row="2" 
                        Orientation="Horizontal" 
                        HorizontalAlignment="Right" 
                        Margin="0,8,0,0"
                        Spacing="8">
                <Button x:Name="LoadFromFileButton" 
                        Content="Load From File" 
                        Click="LoadFromFileButton_Click"/>
                <Button x:Name="ParseButton" 
                        Content="Parse Files" 
                        Click="ParseButton_Click" 
                        Style="{StaticResource AccentButtonStyle}"/>
            </StackPanel>
        </Grid>

        <!-- Parsed Files Section -->
        <Grid Grid.Row="3">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>

            <TextBlock x:Name="StatusTextBlock" 
                       Text="Parsed Files (0)" 
                       Style="{StaticResource SubtitleTextBlockStyle}" 
                       Margin="0,16,0,8" 
                       Grid.Row="0"/>

            <ListView x:Name="ParsedFilesListView"
                      Grid.Row="1"
                      ItemsSource="{x:Bind ParsedFiles}"
                      SelectionMode="Single"
                      IsItemClickEnabled="True"
                      BorderThickness="1"
                      BorderBrush="{ThemeResource DividerStrokeColorDefaultBrush}"
                      Padding="0">
                <ListView.ItemTemplate>
                    <DataTemplate x:DataType="local:ParsedFile">
                        <Grid Padding="12,8">
                            <TextBlock Text="{x:Bind Filename}" 
                                       Style="{StaticResource BodyStrongTextBlockStyle}"
                                       TextTrimming="CharacterEllipsis"/>
                        </Grid>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>

            <StackPanel Grid.Row="2" 
                        Orientation="Horizontal" 
                        HorizontalAlignment="Right" 
                        Margin="0,8,0,0"
                        Spacing="8">
                <Button x:Name="ViewFileButton" 
                        Content="View Selected File" 
                        Click="ViewFileButton_Click"/>
                <Button x:Name="DownloadAllButton" 
                        Content="Download All Files" 
                        Click="DownloadAllButton_Click" 
                        Style="{StaticResource AccentButtonStyle}"/>
            </StackPanel>
        </Grid>
    </Grid>
</Window>