LehrerApp/LehrerApp.Desktop/Views/DashboardView.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:vm="clr-namespace:LehrerApp.Desktop.ViewModels"
             x:Class="LehrerApp.Desktop.Views.DashboardView"
             x:DataType="vm:DashboardViewModel">

  <ScrollViewer Padding="24">
    <StackPanel Spacing="20">

      <!-- Header -->
      <StackPanel>
        <TextBlock Text="{Binding Greeting}" FontSize="14" Opacity="0.6" />
        <TextBlock Text="{Binding CurrentDate}" FontSize="24" FontWeight="SemiBold" />
      </StackPanel>

      <Grid ColumnDefinitions="*,*" RowDefinitions="Auto,Auto" >

        <!-- Heutige Stunden -->
        <Border Grid.Column="0" Grid.Row="0"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16" Margin="0,0,8,8">
          <StackPanel>
            <TextBlock Text="HEUTE" FontSize="11" FontWeight="Bold"
                       Opacity="0.5" Margin="0,0,0,12"/>
            <ItemsControl ItemsSource="{Binding TodaysLessons}">
              <ItemsControl.ItemTemplate>
                <DataTemplate DataType="vm:LessonItem">
                  <Border Padding="0,6" BorderThickness="0,0,0,1"
                          BorderBrush="{DynamicResource SystemControlForegroundBaseLowBrush}">
                    <Grid ColumnDefinitions="Auto,*">
                      <Border Grid.Column="0" Width="4" CornerRadius="2"
                              Background="{DynamicResource SystemAccentColor}"
                              Margin="0,0,10,0"/>
                      <StackPanel Grid.Column="1">
                        <TextBlock Text="{Binding GroupName}"
                                   FontWeight="SemiBold" FontSize="13"/>
                        <TextBlock Text="{Binding Topic}"
                                   FontSize="12" Opacity="0.7"
                                   TextTrimming="CharacterEllipsis"/>
                      </StackPanel>
                    </Grid>
                  </Border>
                </DataTemplate>
              </ItemsControl.ItemTemplate>
            </ItemsControl>
            <TextBlock Text="Keine Stunden heute" FontSize="13" Opacity="0.5"
                       IsVisible="{Binding !TodaysLessons.Count}"/>
          </StackPanel>
        </Border>

        <!-- Offene Aufgaben -->
        <Border Grid.Column="1" Grid.Row="0"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16" Margin="8,0,0,8">
          <StackPanel>
            <TextBlock Text="OFFENE AUFGABEN" FontSize="11" FontWeight="Bold"
                       Opacity="0.5" Margin="0,0,0,12"/>
            <ItemsControl ItemsSource="{Binding OpenTasks}">
              <ItemsControl.ItemTemplate>
                <DataTemplate DataType="vm:TaskItem">
                  <Grid ColumnDefinitions="*,Auto" Margin="0,4">
                    <StackPanel Grid.Column="0">
                      <TextBlock Text="{Binding Title}"
                                 FontSize="13" TextTrimming="CharacterEllipsis"/>
                    </StackPanel>
                    <TextBlock Grid.Column="1" Text="{Binding DueDate}"
                               FontSize="12" Opacity="0.6" Margin="8,0,0,0"/>
                  </Grid>
                </DataTemplate>
              </ItemsControl.ItemTemplate>
            </ItemsControl>
            <TextBlock Text="Keine offenen Aufgaben" FontSize="13" Opacity="0.5"
                       IsVisible="{Binding !OpenTasks.Count}"/>
          </StackPanel>
        </Border>

        <!-- Meine Lerngruppen -->
        <Border Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="2"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
            <TextBlock Text="MEINE LERNGRUPPEN" FontSize="11" FontWeight="Bold"
                       Opacity="0.5" Margin="0,0,0,12"/>
            <ItemsControl ItemsSource="{Binding CurrentGroups}">
              <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                  <WrapPanel Orientation="Horizontal"/>
                </ItemsPanelTemplate>
              </ItemsControl.ItemsPanel>
              <ItemsControl.ItemTemplate>
                <DataTemplate DataType="vm:GroupChip">
                  <Border Background="{DynamicResource SystemAccentColorLight2}"
                          CornerRadius="6" Padding="12,6" Margin="0,0,8,8">
                    <StackPanel>
                      <TextBlock Text="{Binding Name}"
                                 FontWeight="SemiBold" FontSize="13"/>
                      <TextBlock Text="{Binding Subject}"
                                 FontSize="11" Opacity="0.7"
                                 IsVisible="{Binding Subject, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
                    </StackPanel>
                  </Border>
                </DataTemplate>
              </ItemsControl.ItemTemplate>
            </ItemsControl>
            <TextBlock Text="Noch keine Lerngruppen für dieses Schuljahr"
                       FontSize="13" Opacity="0.5"
                       IsVisible="{Binding !CurrentGroups.Count}"/>
          </StackPanel>
        </Border>

      </Grid>
    </StackPanel>
  </ScrollViewer>

</UserControl>