Add computers page.

Marechai.App/App.xaml.cs

@@ -100,6 +100,8 @@ public partial class App : Application
                                                                  // Register application services
                                                                  services.AddSingleton<NewsService>();
                                                                  services.AddSingleton<NewsViewModel>();
+                                                                 services.AddSingleton<ComputersService>();
+                                                                 services.AddSingleton<ComputersViewModel>();
                                                              })
                                                             .UseNavigation(RegisterRoutes));
 
@@ -117,14 +119,27 @@ public partial class App : Application
     {
         views.Register(new ViewMap(ViewModel: typeof(ShellViewModel)),
                        new ViewMap<MainPage, MainViewModel>(),
+                       new ViewMap<NewsPage, NewsViewModel>(),
+                       new ViewMap<ComputersPage, ComputersViewModel>(),
                        new DataViewMap<SecondPage, SecondViewModel, Entity>());
 
         routes.Register(new RouteMap("",
                                      views.FindByViewModel<ShellViewModel>(),
                                      Nested:
                                      [
-                                         new RouteMap("Main",   views.FindByViewModel<MainViewModel>(), true),
-                                         new RouteMap("Second", views.FindByViewModel<SecondViewModel>())
+                                         new RouteMap("Main",
+                                                      views.FindByViewModel<MainViewModel>(),
+                                                      true,
+                                                      Nested:
+                                                      [
+                                                          new RouteMap("News",
+                                                                       views.FindByViewModel<NewsViewModel>(),
+                                                                       true),
+                                                          new RouteMap("computers",
+                                                                       views.FindByViewModel<ComputersViewModel>()),
+                                                          new RouteMap("Second",
+                                                                       views.FindByViewModel<SecondViewModel>())
+                                                      ])
                                      ]));
     }
 }

Marechai.App/Presentation/ComputersPage.xaml

@@ -0,0 +1,297 @@
+<?xml version="1.0"
+      encoding="utf-8"?>
+
+<Page x:Class="Marechai.App.Presentation.ComputersPage"
+      x:Name="PageRoot"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:utu="using:Uno.Toolkit.UI"
+      NavigationCacheMode="Required"
+      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
+
+    <Grid utu:SafeArea.Insets="VisibleBounds">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" /> <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+
+        <!-- Header -->
+        <utu:NavigationBar Grid.Row="0"
+                           Content="{Binding Path=Title}">
+            <utu:NavigationBar.MainCommand>
+                <AppBarButton Icon="Back"
+                              Label="Back"
+                              Command="{Binding GoBackCommand}"
+                              AutomationProperties.Name="Go back" />
+            </utu:NavigationBar.MainCommand>
+        </utu:NavigationBar>
+
+        <!-- Content -->
+        <ScrollViewer Grid.Row="1">
+            <StackPanel Padding="16"
+                        Spacing="24">
+
+                <!-- Computer Count Display -->
+                <StackPanel HorizontalAlignment="Center"
+                            Spacing="8">
+                    <TextBlock Text="{Binding ComputerCountText}"
+                               TextAlignment="Center"
+                               FontSize="18"
+                               FontWeight="SemiBold"
+                               Foreground="{ThemeResource SystemBaseMediumColor}" />
+                    <TextBlock Text="{Binding ComputerCount}"
+                               TextAlignment="Center"
+                               FontSize="48"
+                               FontWeight="Bold"
+                               Foreground="{ThemeResource SystemAccentColor}" />
+                </StackPanel>
+
+                <!-- Loading State -->
+                <StackPanel Visibility="{Binding IsLoading}"
+                            VerticalAlignment="Center"
+                            HorizontalAlignment="Center"
+                            Padding="32"
+                            Spacing="16">
+                    <ProgressRing IsActive="True"
+                                  IsIndeterminate="True"
+                                  Height="48"
+                                  Width="48" />
+                    <TextBlock Text="Loading..."
+                               TextAlignment="Center"
+                               FontSize="14" />
+                </StackPanel>
+
+                <!-- Error State -->
+                <StackPanel Visibility="{Binding HasError}"
+                            Padding="16"
+                            Background="{ThemeResource SystemErrorBackgroundColor}"
+                            CornerRadius="8"
+                            Spacing="8">
+                    <TextBlock Text="Error"
+                               FontWeight="Bold"
+                               Foreground="{ThemeResource SystemErrorTextForegroundColor}" />
+                    <TextBlock Text="{Binding ErrorMessage}"
+                               Foreground="{ThemeResource SystemErrorTextForegroundColor}"
+                               TextWrapping="Wrap" />
+                </StackPanel>
+
+                <!-- Main Content (visible when loaded and no error) -->
+                <StackPanel Visibility="{Binding IsDataLoaded}"
+                            Spacing="24">
+
+                    <!-- Letters Grid Section -->
+                    <StackPanel Spacing="12">
+                        <TextBlock Text="Browse by Letter"
+                                   FontSize="16"
+                                   FontWeight="SemiBold"
+                                   Foreground="{ThemeResource SystemBaseMediumColor}" />
+                        <ItemsRepeater ItemsSource="{Binding LettersList}"
+                                       Layout="{StaticResource LettersGridLayout}">
+                            <ItemsRepeater.ItemTemplate></ItemsRepeater.ItemTemplate>
+                        </ItemsRepeater>
+                    </StackPanel>
+
+                    <!-- Years Grid Section -->
+                    <StackPanel Spacing="12">
+                        <TextBlock Text="{Binding YearsGridTitle}"
+                                   FontSize="16"
+                                   FontWeight="SemiBold"
+                                   Foreground="{ThemeResource SystemBaseMediumColor}" />
+                        <ItemsRepeater ItemsSource="{Binding YearsList}"
+                                       Layout="{StaticResource YearsGridLayout}">
+                            <ItemsRepeater.ItemTemplate></ItemsRepeater.ItemTemplate>
+                        </ItemsRepeater>
+                    </StackPanel>
+
+                    <!-- All Computers and Search Section -->
+                    <StackPanel Spacing="12">
+                        <Button Content="All Computers"
+                                Padding="16,12"
+                                HorizontalAlignment="Stretch"
+                                FontSize="16"
+                                FontWeight="SemiBold"
+                                Command="{Binding NavigateAllComputersCommand}"
+                                Style="{StaticResource AccentButtonStyle}" />
+
+                        <!-- Search Field (placeholder for future implementation) -->
+                        <TextBox PlaceholderText="Search computers..."
+                                 Padding="12"
+                                 IsEnabled="False"
+                                 Opacity="0.5" />
+                    </StackPanel>
+
+                </StackPanel>
+
+            </StackPanel>
+        </ScrollViewer>
+
+    </Grid>
+
+    <Page.Resources>
+        <!-- Keyboard Key Button Style (revised: more padding, simplified borders to avoid clipping, darker scheme) -->
+        <Style x:Key="KeyboardKeyButtonStyle"
+               TargetType="Button">
+            <!-- Base appearance -->
+            <Setter Property="Foreground"
+                    Value="#1A1A1A" />
+            <Setter Property="Background">
+                <Setter.Value>
+                    <LinearGradientBrush StartPoint="0,0"
+                                         EndPoint="0,1">
+                        <GradientStop Color="#D6D6D6"
+                                      Offset="0" />
+                        <GradientStop Color="#C2C2C2"
+                                      Offset="0.55" />
+                        <GradientStop Color="#B0B0B0"
+                                      Offset="1" />
+                    </LinearGradientBrush>
+                </Setter.Value>
+            </Setter>
+            <Setter Property="BorderBrush"
+                    Value="#7A7A7A" />
+            <Setter Property="BorderThickness"
+                    Value="1" />
+            <Setter Property="CornerRadius"
+                    Value="6" />
+            <Setter Property="Padding"
+                    Value="14,12" /> <!-- Increased vertical padding to prevent cutoff -->
+            <Setter Property="Margin"
+                    Value="4" />
+            <Setter Property="FontFamily"
+                    Value="Segoe UI" />
+            <Setter Property="FontWeight"
+                    Value="SemiBold" />
+            <Setter Property="FontSize"
+                    Value="15" />
+            <Setter Property="HorizontalAlignment"
+                    Value="Stretch" />
+            <Setter Property="VerticalAlignment"
+                    Value="Stretch" />
+            <Setter Property="HorizontalContentAlignment"
+                    Value="Center" />
+            <Setter Property="VerticalContentAlignment"
+                    Value="Center" />
+            <Setter Property="MinWidth"
+                    Value="52" />
+            <Setter Property="MinHeight"
+                    Value="52" /> <!-- Larger min height avoids clipping ascenders/descenders -->
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Grid>
+                            <!-- Shadow (simple) -->
+                            <Border x:Name="Shadow"
+                                    CornerRadius="6"
+                                    Background="#33000000"
+                                    Margin="2,4,4,2" />
+                            <!-- Key surface -->
+                            <Border x:Name="KeyBorder"
+                                    Background="{TemplateBinding Background}"
+                                    BorderBrush="{TemplateBinding BorderBrush}"
+                                    BorderThickness="{TemplateBinding BorderThickness}"
+                                    CornerRadius="{TemplateBinding CornerRadius}">
+                                <!-- Inner highlight & content -->
+                                <Grid>
+                                    <Border CornerRadius="{TemplateBinding CornerRadius}"
+                                            BorderBrush="#60FFFFFF"
+                                            BorderThickness="1,1,0,0" />
+                                    <Border CornerRadius="{TemplateBinding CornerRadius}"
+                                            BorderBrush="#30000000"
+                                            BorderThickness="0,0,1,1" />
+                                    <ContentPresenter x:Name="ContentPresenter"
+                                                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                                      VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                                                      Margin="0"
+                                                      TextWrapping="NoWrap" />
+                                </Grid>
+                            </Border>
+                            <VisualStateManager.VisualStateGroups>
+                                <VisualStateGroup x:Name="CommonStates">
+                                    <VisualState x:Name="Normal" />
+                                    <VisualState x:Name="PointerOver">
+                                        <VisualState.Setters>
+                                            <Setter Target="KeyBorder.Background">
+                                                <Setter.Value>
+                                                    <LinearGradientBrush StartPoint="0,0"
+                                                                         EndPoint="0,1">
+                                                        <GradientStop Color="#E0E0E0"
+                                                                      Offset="0" />
+                                                        <GradientStop Color="#CFCFCF"
+                                                                      Offset="0.55" />
+                                                        <GradientStop Color="#BDBDBD"
+                                                                      Offset="1" />
+                                                    </LinearGradientBrush>
+                                                </Setter.Value>
+                                            </Setter>
+                                            <Setter Target="KeyBorder.BorderBrush"
+                                                    Value="#5F5F5F" />
+                                        </VisualState.Setters>
+                                    </VisualState>
+                                    <VisualState x:Name="Pressed">
+                                        <VisualState.Setters>
+                                            <Setter Target="KeyBorder.Background">
+                                                <Setter.Value>
+                                                    <LinearGradientBrush StartPoint="0,0"
+                                                                         EndPoint="0,1">
+                                                        <GradientStop Color="#9C9C9C"
+                                                                      Offset="0" />
+                                                        <GradientStop Color="#A8A8A8"
+                                                                      Offset="0.55" />
+                                                        <GradientStop Color="#B4B4B4"
+                                                                      Offset="1" />
+                                                    </LinearGradientBrush>
+                                                </Setter.Value>
+                                            </Setter>
+                                            <Setter Target="KeyBorder.BorderBrush"
+                                                    Value="#4A4A4A" />
+                                            <Setter Target="KeyBorder.RenderTransform">
+                                                <Setter.Value>
+                                                    <TranslateTransform Y="2" />
+                                                </Setter.Value>
+                                            </Setter>
+                                            <Setter Target="Shadow.Opacity"
+                                                    Value="0.15" />
+                                        </VisualState.Setters>
+                                    </VisualState>
+                                    <VisualState x:Name="Disabled">
+                                        <VisualState.Setters>
+                                            <Setter Target="KeyBorder.Opacity"
+                                                    Value="0.45" />
+                                            <Setter Target="ContentPresenter.Foreground"
+                                                    Value="#777777" />
+                                        </VisualState.Setters>
+                                    </VisualState>
+                                </VisualStateGroup>
+                                <VisualStateGroup x:Name="FocusStates">
+                                    <VisualState x:Name="Focused">
+                                        <VisualState.Setters>
+                                            <Setter Target="KeyBorder.BorderBrush"
+                                                    Value="#3A7AFE" />
+                                            <Setter Target="KeyBorder.BorderThickness"
+                                                    Value="2" />
+                                        </VisualState.Setters>
+                                    </VisualState>
+                                    <VisualState x:Name="Unfocused" />
+                                </VisualStateGroup>
+                            </VisualStateManager.VisualStateGroups>
+                        </Grid>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- Responsive Grid Layouts -->
+        <UniformGridLayout x:Key="LettersGridLayout"
+                           ItemsStretch="Fill"
+                           MinItemWidth="44"
+                           MinItemHeight="44"
+                           MaximumRowsOrColumns="13" />
+
+        <UniformGridLayout x:Key="YearsGridLayout"
+                           ItemsStretch="Fill"
+                           MinItemWidth="54"
+                           MinItemHeight="44"
+                           MaximumRowsOrColumns="10" />
+
+    </Page.Resources>
+
+</Page>

Marechai.App/Presentation/ComputersPage.xaml.cs

@@ -0,0 +1,43 @@
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Navigation;
+
+namespace Marechai.App.Presentation;
+
+public sealed partial class ComputersPage : Page
+{
+    public ComputersPage()
+    {
+        InitializeComponent();
+        DataContextChanged += ComputersPage_DataContextChanged;
+        Loaded             += ComputersPage_Loaded;
+    }
+
+    private void ComputersPage_Loaded(object sender, RoutedEventArgs e)
+    {
+        if(DataContext is not ComputersViewModel viewModel) return;
+
+        // Trigger data loading
+        _ = viewModel.LoadData.ExecuteAsync(null);
+    }
+
+    private void ComputersPage_DataContextChanged(FrameworkElement sender, DataContextChangedEventArgs args)
+    {
+        if(args.NewValue is ComputersViewModel viewModel)
+        {
+            // Trigger data loading when data context changes
+            _ = viewModel.LoadData.ExecuteAsync(null);
+        }
+    }
+
+    protected override void OnNavigatedTo(NavigationEventArgs e)
+    {
+        base.OnNavigatedTo(e);
+
+        if(DataContext is ComputersViewModel viewModel)
+        {
+            // Trigger data loading when navigating to the page
+            _ = viewModel.LoadData.ExecuteAsync(null);
+        }
+    }
+}

Marechai.App/Presentation/ComputersViewModel.cs

@@ -0,0 +1,177 @@
+using System;
+using System.Collections.ObjectModel;
+using System.Threading.Tasks;
+using System.Windows.Input;
+using Marechai.App.Services;
+using Uno.Extensions.Navigation;
+
+namespace Marechai.App.Presentation;
+
+public partial class ComputersViewModel : ObservableObject
+{
+    private readonly ComputersService            _computersService;
+    private readonly IStringLocalizer            _localizer;
+    private readonly ILogger<ComputersViewModel> _logger;
+    private readonly INavigator                  _navigator;
+
+    [ObservableProperty]
+    private int computerCount;
+
+    [ObservableProperty]
+    private string computerCountText = string.Empty;
+
+    [ObservableProperty]
+    private string errorMessage = string.Empty;
+
+    [ObservableProperty]
+    private bool hasError;
+
+    [ObservableProperty]
+    private bool isDataLoaded;
+
+    [ObservableProperty]
+    private bool isLoading;
+
+    [ObservableProperty]
+    private ObservableCollection<char> lettersList = new();
+
+    [ObservableProperty]
+    private int maximumYear;
+
+    [ObservableProperty]
+    private int minimumYear;
+
+    [ObservableProperty]
+    private string yearsGridTitle = string.Empty;
+
+    [ObservableProperty]
+    private ObservableCollection<int> yearsList = new();
+
+    public ComputersViewModel(ComputersService            computersService, IStringLocalizer localizer,
+                              ILogger<ComputersViewModel> logger,           INavigator       navigator)
+    {
+        _computersService           = computersService;
+        _localizer                  = localizer;
+        _logger                     = logger;
+        _navigator                  = navigator;
+        LoadData                    = new AsyncRelayCommand(LoadDataAsync);
+        GoBackCommand               = new AsyncRelayCommand(GoBackAsync);
+        NavigateByLetterCommand     = new AsyncRelayCommand<char>(NavigateByLetterAsync);
+        NavigateByYearCommand       = new AsyncRelayCommand<int>(NavigateByYearAsync);
+        NavigateAllComputersCommand = new AsyncRelayCommand(NavigateAllComputersAsync);
+
+        InitializeLetters();
+    }
+
+    public IAsyncRelayCommand       LoadData                    { get; }
+    public ICommand                 GoBackCommand               { get; }
+    public IAsyncRelayCommand<char> NavigateByLetterCommand     { get; }
+    public IAsyncRelayCommand<int>  NavigateByYearCommand       { get; }
+    public IAsyncRelayCommand       NavigateAllComputersCommand { get; }
+    public string                   Title                       { get; } = "Computers";
+
+    /// <summary>
+    ///     Initializes the alphabet list (A-Z)
+    /// </summary>
+    private void InitializeLetters()
+    {
+        LettersList.Clear();
+
+        for(var c = 'A'; c <= 'Z'; c++) LettersList.Add(c);
+    }
+
+    /// <summary>
+    ///     Loads computers count, minimum and maximum years from the API
+    /// </summary>
+    private async Task LoadDataAsync()
+    {
+        try
+        {
+            IsLoading    = true;
+            ErrorMessage = string.Empty;
+            HasError     = false;
+            IsDataLoaded = false;
+            YearsList.Clear();
+
+            // Load all data in parallel for better performance
+            Task<int> countTask   = _computersService.GetComputersCountAsync();
+            Task<int> minYearTask = _computersService.GetMinimumYearAsync();
+            Task<int> maxYearTask = _computersService.GetMaximumYearAsync();
+            await Task.WhenAll(countTask, minYearTask, maxYearTask);
+
+            ComputerCount = countTask.Result;
+            MinimumYear   = minYearTask.Result;
+            MaximumYear   = maxYearTask.Result;
+
+            // Update display text
+            ComputerCountText = _localizer["Computers in the database"];
+
+            // Generate years list
+            if(MinimumYear > 0 && MaximumYear > 0)
+            {
+                for(int year = MinimumYear; year <= MaximumYear; year++) YearsList.Add(year);
+
+                YearsGridTitle = $"Browse by Year ({MinimumYear} - {MaximumYear})";
+            }
+
+            if(ComputerCount == 0)
+            {
+                ErrorMessage = _localizer["No computers found"].Value;
+                HasError     = true;
+            }
+            else
+                IsDataLoaded = true;
+        }
+        catch(Exception ex)
+        {
+            _logger.LogError("Error loading computers data: {Exception}", ex.Message);
+            ErrorMessage = _localizer["Failed to load computers data. Please try again later."].Value;
+            HasError     = true;
+        }
+        finally
+        {
+            IsLoading = false;
+        }
+    }
+
+    /// <summary>
+    ///     Handles back navigation
+    /// </summary>
+    private async Task GoBackAsync()
+    {
+        await _navigator.NavigateViewModelAsync<MainViewModel>(this);
+    }
+
+    /// <summary>
+    ///     Navigates to computers filtered by letter
+    /// </summary>
+    private async Task NavigateByLetterAsync(char letter)
+    {
+        _logger.LogInformation("Navigating to computers by letter: {Letter}", letter);
+
+        // TODO: Implement navigation to letter-filtered view
+        await Task.CompletedTask;
+    }
+
+    /// <summary>
+    ///     Navigates to computers filtered by year
+    /// </summary>
+    private async Task NavigateByYearAsync(int year)
+    {
+        _logger.LogInformation("Navigating to computers by year: {Year}", year);
+
+        // TODO: Implement navigation to year-filtered view
+        await Task.CompletedTask;
+    }
+
+    /// <summary>
+    ///     Navigates to all computers view
+    /// </summary>
+    private async Task NavigateAllComputersAsync()
+    {
+        _logger.LogInformation("Navigating to all computers");
+
+        // TODO: Implement navigation to all computers view
+        await Task.CompletedTask;
+    }
+}

Marechai.App/Presentation/MainPage.xaml

@@ -6,6 +6,7 @@
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       xmlns:local="using:Marechai.App.Presentation"
       xmlns:utu="using:Uno.Toolkit.UI"
+      xmlns:uen="using:Uno.Extensions.Navigation.UI"
       NavigationCacheMode="Required"
       Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
 
@@ -43,120 +44,12 @@
             </utu:NavigationBar.MainCommand>
         </utu:NavigationBar>
 
-        <!-- Content -->
-        <Grid Grid.Row="1"
-              Grid.Column="1">
-            <RefreshContainer x:Name="RefreshContainer"
-                              RefreshRequested="RefreshContainer_RefreshRequested">
-                <ScrollViewer>
-                    <Grid Padding="16">
-                        <Grid.RowDefinitions>
-                            <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
-                            <RowDefinition Height="*" />
-                        </Grid.RowDefinitions>
-
-                        <!-- News Title Section -->
-                        <StackPanel Grid.Row="0"
-                                    Margin="0,0,0,16">
-                            <TextBlock Text="Latest News"
-                                       FontSize="32"
-                                       FontWeight="Bold"
-                                       Foreground="{ThemeResource SystemAccentColor}"
-                                       Margin="0,0,0,8" />
-                            <TextBlock Text="Stay updated with the latest additions to the database"
-                                       FontSize="14"
-                                       Foreground="{ThemeResource SystemBaseMediumColor}"
-                                       TextWrapping="Wrap" />
-                        </StackPanel>
-
-                        <!-- Loading State -->
-                        <StackPanel Grid.Row="2"
-                                    Visibility="{Binding NewsViewModel.IsLoading}"
-                                    VerticalAlignment="Center"
-                                    HorizontalAlignment="Center"
-                                    Padding="32"
-                                    Spacing="16">
-                            <ProgressRing IsActive="True"
-                                          IsIndeterminate="True"
-                                          Height="48"
-                                          Width="48"
-                                          Foreground="{ThemeResource SystemAccentColor}" />
-                            <TextBlock Text="Loading latest news..."
-                                       FontSize="16"
-                                       TextAlignment="Center"
-                                       Foreground="{ThemeResource SystemBaseMediumColor}" />
-                        </StackPanel>
-
-                        <!-- Error State -->
-                        <StackPanel Grid.Row="2"
-                                    Visibility="{Binding NewsViewModel.HasError}"
-                                    VerticalAlignment="Center"
-                                    Spacing="16"
-                                    Padding="32">
-                            <InfoBar IsOpen="True"
-                                     Severity="Error"
-                                     Title="Unable to Load News"
-                                     Message="{Binding NewsViewModel.ErrorMessage}"
-                                     IsClosable="False" />
-                            <Button Content="Retry"
-                                    Command="{Binding NewsViewModel.LoadNews}"
-                                    HorizontalAlignment="Center"
-                                    Style="{ThemeResource AccentButtonStyle}" />
-                        </StackPanel>
-
-                        <!-- News Feed -->
-                        <ItemsControl Grid.Row="2"
-                                      ItemsSource="{Binding NewsViewModel.NewsList}">
-                            <ItemsControl.ItemTemplate>
-                                <DataTemplate>
-                                    <Border Margin="0,0,0,12"
-                                            CornerRadius="8"
-                                            Background="{ThemeResource CardBackgroundFillColorDefaultBrush}"
-                                            BorderBrush="{ThemeResource CardStrokeColorDefaultBrush}"
-                                            BorderThickness="1"
-                                            Padding="16">
-                                        <Grid>
-                                            <Grid.RowDefinitions>
-                                                <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
-                                                <RowDefinition Height="Auto" />
-                                            </Grid.RowDefinitions>
-
-                                            <!-- Date -->
-                                            <TextBlock Grid.Row="0"
-                                                       Text="{Binding News.Timestamp}"
-                                                       FontSize="12"
-                                                       Foreground="{ThemeResource SystemBaseMediumColor}"
-                                                       Margin="0,0,0,12" />
-
-                                            <!-- News Title/Text (Localized) -->
-                                            <TextBlock Grid.Row="1"
-                                                       Text="{Binding DisplayText}"
-                                                       FontSize="16"
-                                                       FontWeight="SemiBold"
-                                                       Foreground="{ThemeResource SystemBaseHighColor}"
-                                                       TextWrapping="Wrap"
-                                                       Margin="0,0,0,12" />
-
-                                            <!-- Item Name Link -->
-                                            <HyperlinkButton Grid.Row="2"
-                                                             Content="{Binding News.ItemName}"
-                                                             FontSize="14"
-                                                             Padding="0,4,0,4"
-                                                             Foreground="{ThemeResource SystemAccentColor}" />
-                                        </Grid>
-                                    </Border>
-                                </DataTemplate>
-                            </ItemsControl.ItemTemplate>
-                            <ItemsControl.ItemsPanel>
-                                <ItemsPanelTemplate>
-                                    <StackPanel Orientation="Vertical"
-                                                Spacing="0" />
-                                </ItemsPanelTemplate>
-                            </ItemsControl.ItemsPanel>
-                        </ItemsControl>
-                    </Grid>
-                </ScrollViewer>
-            </RefreshContainer>
-        </Grid>
+        <!-- Content Region for Navigation -->
+        <ContentControl Grid.Row="1"
+                        Grid.Column="1"
+                        HorizontalContentAlignment="Stretch"
+                        VerticalContentAlignment="Stretch"
+                        uen:Region.Attached="True"
+                        uen:Region.Name="Main" />
     </Grid>
 </Page>

Marechai.App/Presentation/MainPage.xaml.cs

@@ -1,15 +1,12 @@
 using System;
 using System.ComponentModel;
-using Windows.Foundation;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
-using Microsoft.UI.Xaml.Navigation;
 
 namespace Marechai.App.Presentation;
 
 public sealed partial class MainPage : Page
 {
-    private bool                        _initialNewsLoaded;
     private PropertyChangedEventHandler _sidebarPropertyChangedHandler;
 
     public MainPage()
@@ -96,44 +93,5 @@ public sealed partial class MainPage : Page
 
             ((INotifyPropertyChanged)vm).PropertyChanged += _sidebarPropertyChangedHandler;
         }
-
-        if(_initialNewsLoaded) return;
-
-        if(args.NewValue is MainViewModel viewModel && viewModel.NewsViewModel is not null)
-        {
-            _initialNewsLoaded =  true;
-            _                  =  viewModel.NewsViewModel.LoadNews.ExecuteAsync(null);
-            DataContextChanged -= MainPage_DataContextChanged;
-        }
-    }
-
-    protected override void OnNavigatedTo(NavigationEventArgs e)
-    {
-        base.OnNavigatedTo(e);
-
-        if(_initialNewsLoaded) return;
-
-        if(DataContext is MainViewModel viewModel && viewModel.NewsViewModel is not null)
-        {
-            _initialNewsLoaded =  true;
-            _                  =  viewModel.NewsViewModel.LoadNews.ExecuteAsync(null);
-            DataContextChanged -= MainPage_DataContextChanged;
-        }
-    }
-
-    private async void RefreshContainer_RefreshRequested(RefreshContainer sender, RefreshRequestedEventArgs args)
-    {
-        // Handle pull-to-refresh
-        using Deferral deferral = args.GetDeferral();
-
-        try
-        {
-            if(DataContext is MainViewModel viewModel && viewModel.NewsViewModel is not null)
-                await viewModel.NewsViewModel.LoadNews.ExecuteAsync(null);
-        }
-        catch(Exception)
-        {
-            // Swallow to avoid process crash; NewsViewModel already logs errors.
-        }
     }
 }

Marechai.App/Presentation/MainViewModel.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using System.Windows.Input;
@@ -149,16 +150,23 @@ public partial class MainViewModel : ObservableObject
 
     private async Task NavigateTo(string destination)
     {
-        // TODO: Navigate to the specified destination
-        // These routes will need to be registered in App.xaml.cs RegisterRoutes method
-        // For now, placeholder implementation
-        await Task.CompletedTask;
+        try
+        {
+            // Navigate within the Main region using relative navigation
+            // The "./" prefix means navigate within the current page's region
+            await _navigator.NavigateRouteAsync(this, $"./{destination}");
+        }
+        catch(Exception)
+        {
+            // Navigation error - fail silently for now
+            // TODO: Add error handling/logging
+        }
     }
 
     private async Task NavigateToMainAsync()
     {
-        // Stay on main page
-        await Task.CompletedTask;
+        // Navigate to News page (the default/home page)
+        await NavigateTo("News");
     }
 
     private async Task GoToSecondView()

Marechai.App/Presentation/NewsPage.xaml

@@ -0,0 +1,123 @@
+<?xml version="1.0"
+      encoding="utf-8"?>
+
+<Page x:Class="Marechai.App.Presentation.NewsPage"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:utu="using:Uno.Toolkit.UI"
+      NavigationCacheMode="Required"
+      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
+
+    <Grid utu:SafeArea.Insets="VisibleBounds">
+        <RefreshContainer x:Name="RefreshContainer"
+                          RefreshRequested="RefreshContainer_RefreshRequested">
+            <ScrollViewer>
+                <Grid Padding="16">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" /> <RowDefinition Height="*" />
+                    </Grid.RowDefinitions>
+
+                    <!-- News Title Section -->
+                    <StackPanel Grid.Row="0"
+                                Margin="0,0,0,16">
+                        <TextBlock Text="Latest News"
+                                   FontSize="32"
+                                   FontWeight="Bold"
+                                   Foreground="{ThemeResource SystemAccentColor}"
+                                   Margin="0,0,0,8" />
+                        <TextBlock Text="Stay updated with the latest additions to the database"
+                                   FontSize="14"
+                                   Foreground="{ThemeResource SystemBaseMediumColor}"
+                                   TextWrapping="Wrap" />
+                    </StackPanel>
+
+                    <!-- Loading State -->
+                    <StackPanel Grid.Row="2"
+                                Visibility="{Binding IsLoading}"
+                                VerticalAlignment="Center"
+                                HorizontalAlignment="Center"
+                                Padding="32"
+                                Spacing="16">
+                        <ProgressRing IsActive="True"
+                                      IsIndeterminate="True"
+                                      Height="48"
+                                      Width="48"
+                                      Foreground="{ThemeResource SystemAccentColor}" />
+                        <TextBlock Text="Loading latest news..."
+                                   FontSize="16"
+                                   TextAlignment="Center"
+                                   Foreground="{ThemeResource SystemBaseMediumColor}" />
+                    </StackPanel>
+
+                    <!-- Error State -->
+                    <StackPanel Grid.Row="2"
+                                Visibility="{Binding HasError}"
+                                VerticalAlignment="Center"
+                                Spacing="16"
+                                Padding="32">
+                        <InfoBar IsOpen="True"
+                                 Severity="Error"
+                                 Title="Unable to Load News"
+                                 Message="{Binding ErrorMessage}"
+                                 IsClosable="False" />
+                        <Button Content="Retry"
+                                Command="{Binding LoadNews}"
+                                HorizontalAlignment="Center"
+                                Style="{ThemeResource AccentButtonStyle}" />
+                    </StackPanel>
+
+                    <!-- News Feed -->
+                    <ItemsControl Grid.Row="2"
+                                  ItemsSource="{Binding NewsList}">
+                        <ItemsControl.ItemTemplate>
+                            <DataTemplate>
+                                <Border Margin="0,0,0,12"
+                                        CornerRadius="8"
+                                        Background="{ThemeResource CardBackgroundFillColorDefaultBrush}"
+                                        BorderBrush="{ThemeResource CardStrokeColorDefaultBrush}"
+                                        BorderThickness="1"
+                                        Padding="16">
+                                    <Grid>
+                                        <Grid.RowDefinitions>
+                                            <RowDefinition Height="Auto" /> <RowDefinition Height="Auto" />
+                                            <RowDefinition Height="Auto" />
+                                        </Grid.RowDefinitions>
+
+                                        <!-- Date -->
+                                        <TextBlock Grid.Row="0"
+                                                   Text="{Binding News.Timestamp}"
+                                                   FontSize="12"
+                                                   Foreground="{ThemeResource SystemBaseMediumColor}"
+                                                   Margin="0,0,0,12" />
+
+                                        <!-- News Title/Text (Localized) -->
+                                        <TextBlock Grid.Row="1"
+                                                   Text="{Binding DisplayText}"
+                                                   FontSize="16"
+                                                   FontWeight="SemiBold"
+                                                   Foreground="{ThemeResource SystemBaseHighColor}"
+                                                   TextWrapping="Wrap"
+                                                   Margin="0,0,0,12" />
+
+                                        <!-- Item Name Link -->
+                                        <HyperlinkButton Grid.Row="2"
+                                                         Content="{Binding News.ItemName}"
+                                                         FontSize="14"
+                                                         Padding="0,4,0,4"
+                                                         Foreground="{ThemeResource SystemAccentColor}" />
+                                    </Grid>
+                                </Border>
+                            </DataTemplate>
+                        </ItemsControl.ItemTemplate>
+                        <ItemsControl.ItemsPanel>
+                            <ItemsPanelTemplate>
+                                <StackPanel Orientation="Vertical"
+                                            Spacing="0" />
+                            </ItemsPanelTemplate>
+                        </ItemsControl.ItemsPanel>
+                    </ItemsControl>
+                </Grid>
+            </ScrollViewer>
+        </RefreshContainer>
+    </Grid>
+</Page>

Marechai.App/Presentation/NewsPage.xaml.cs

@@ -0,0 +1,72 @@
+using System;
+using Windows.Foundation;
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Navigation;
+
+namespace Marechai.App.Presentation;
+
+public sealed partial class NewsPage : Page
+{
+    private bool _initialNewsLoaded;
+
+    public NewsPage()
+    {
+        InitializeComponent();
+        DataContextChanged += NewsPage_DataContextChanged;
+        Loaded             += NewsPage_Loaded;
+    }
+
+    private void NewsPage_Loaded(object sender, RoutedEventArgs e)
+    {
+        if(_initialNewsLoaded) return;
+
+        if(DataContext is NewsViewModel viewModel)
+        {
+            _initialNewsLoaded =  true;
+            _                  =  viewModel.LoadNews.ExecuteAsync(null);
+            DataContextChanged -= NewsPage_DataContextChanged;
+        }
+    }
+
+    private void NewsPage_DataContextChanged(FrameworkElement sender, DataContextChangedEventArgs args)
+    {
+        if(_initialNewsLoaded) return;
+
+        if(args.NewValue is NewsViewModel viewModel)
+        {
+            _initialNewsLoaded =  true;
+            _                  =  viewModel.LoadNews.ExecuteAsync(null);
+            DataContextChanged -= NewsPage_DataContextChanged;
+        }
+    }
+
+    protected override void OnNavigatedTo(NavigationEventArgs e)
+    {
+        base.OnNavigatedTo(e);
+
+        if(_initialNewsLoaded) return;
+
+        if(DataContext is NewsViewModel viewModel)
+        {
+            _initialNewsLoaded =  true;
+            _                  =  viewModel.LoadNews.ExecuteAsync(null);
+            DataContextChanged -= NewsPage_DataContextChanged;
+        }
+    }
+
+    private async void RefreshContainer_RefreshRequested(RefreshContainer sender, RefreshRequestedEventArgs args)
+    {
+        // Handle pull-to-refresh
+        using Deferral deferral = args.GetDeferral();
+
+        try
+        {
+            if(DataContext is NewsViewModel viewModel) await viewModel.LoadNews.ExecuteAsync(null);
+        }
+        catch(Exception)
+        {
+            // Swallow to avoid process crash; NewsViewModel already logs errors.
+        }
+    }
+}