UX-Update 2.0, Neues Dashboard

2026-08-29 00:45:19 +02:00
parent 229ef79e75
commit 9b04d7eb98
14 changed files with 774 additions and 355 deletions
@@ -28,11 +28,37 @@
        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="8">
          <Button Content="Klassenbuch abgleichen…" Click="OnCompareWebUntisDocumentationClick"
                  VerticalAlignment="Center"/>
-          <Button Content="Dashboard anpassen" Command="{Binding ToggleDashboardSettingsCommand}"
+          <Button Content="Bereiche anpassen" Command="{Binding ToggleDashboardSettingsCommand}"
                  VerticalAlignment="Center"/>
        </StackPanel>
      </Grid>

+      <!-- Der Tagesfokus beantwortet zuerst die vier Fragen, die beim Öffnen der App zählen:
+           Was unterrichte ich, was ist zu tun, wo muss ich reagieren und was steht an? -->
+      <Border Background="{DynamicResource AppCardBackgroundBrush}"
+              BorderBrush="{DynamicResource AppCardBorderBrush}" BorderThickness="1"
+              CornerRadius="10" Padding="16,14">
+        <Grid ColumnDefinitions="*,*,*,*">
+          <StackPanel Grid.Column="0" Spacing="3">
+            <TextBlock Text="UNTERRICHT HEUTE" FontSize="10" FontWeight="Bold" Opacity="0.5"/>
+            <TextBlock Text="{Binding TodayLessonSummary}" FontSize="18" FontWeight="SemiBold"/>
+          </StackPanel>
+          <StackPanel Grid.Column="1" Spacing="3" Margin="18,0,0,0">
+            <TextBlock Text="AUFGABEN" FontSize="10" FontWeight="Bold" Opacity="0.5"/>
+            <TextBlock Text="{Binding OpenTaskSummary}" FontSize="18" FontWeight="SemiBold"/>
+          </StackPanel>
+          <StackPanel Grid.Column="2" Spacing="3" Margin="18,0,0,0">
+            <TextBlock Text="HANDLUNGSBEDARF" FontSize="10" FontWeight="Bold" Opacity="0.5"/>
+            <TextBlock Text="{Binding AttentionSummary}" FontSize="18" FontWeight="SemiBold"
+                       Foreground="{DynamicResource AppStatusWarningBrush}"/>
+          </StackPanel>
+          <StackPanel Grid.Column="3" Spacing="3" Margin="18,0,0,0">
+            <TextBlock Text="NÄCHSTE 30 TAGE" FontSize="10" FontWeight="Bold" Opacity="0.5"/>
+            <TextBlock Text="{Binding UpcomingSummary}" FontSize="18" FontWeight="SemiBold"/>
+          </StackPanel>
+        </Grid>
+      </Border>
+
      <Border Background="{DynamicResource SystemControlBackgroundAltHighBrush}" CornerRadius="8"
              Padding="12" IsVisible="{Binding IsDashboardSettingsOpen}">
        <ItemsControl ItemsSource="{Binding DashboardCards}">
@@ -59,14 +85,15 @@
      </Border>

      <!-- Serverseitig gecachte DWD-Daten für den in den Einstellungen hinterlegten Schulstandort. -->
-      <Border Background="{DynamicResource SystemControlBackgroundAltHighBrush}" CornerRadius="8"
-              Padding="16" IsVisible="{Binding IsWeatherPanelVisible}">
-        <StackPanel Spacing="10">
+      <Expander Header="{Binding WeatherSummary}" IsExpanded="{Binding HasWeatherWarnings}"
+                IsVisible="{Binding IsWeatherPanelVisible}"
+                Background="{DynamicResource AppCardBackgroundBrush}"
+                BorderBrush="{DynamicResource AppCardBorderBrush}" BorderThickness="1"
+                CornerRadius="8" Padding="12,6">
+        <StackPanel Spacing="10" Margin="6,8,6,6">
          <Grid ColumnDefinitions="*,Auto">
            <StackPanel>
              <TextBlock Text="WETTER AM SCHULSTANDORT" FontSize="11" FontWeight="Bold" Opacity="0.5"/>
-              <TextBlock Text="{Binding WeatherSummary}" FontSize="20" FontWeight="SemiBold" Margin="0,5,0,0"
-                         IsVisible="{Binding WeatherSummary, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
              <TextBlock Text="{Binding WeatherDetails}" FontSize="11" Opacity="0.65" TextWrapping="Wrap"
                         IsVisible="{Binding WeatherDetails, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
            </StackPanel>
@@ -96,17 +123,20 @@
          </ItemsControl>
          <TextBlock Text="Wetterdaten © Deutscher Wetterdienst" FontSize="10" Opacity="0.5"/>
        </StackPanel>
-      </Border>
+      </Expander>

-      <Grid ColumnDefinitions="*,*" RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto">
+      <TextBlock Text="HEUTE UND HANDLUNGSBEDARF" FontSize="11" FontWeight="Bold" Opacity="0.5"
+                 Margin="2,2,0,-8"/>
+
+      <Grid ColumnDefinitions="3*,2*" RowDefinitions="Auto,Auto,Auto,Auto,Auto,Auto">

        <!-- Heutige Stunden -->
        <Border Grid.Column="{Binding TodayCard.Column}" Grid.Row="{Binding TodayCard.Row}"
-                IsVisible="{Binding TodayCard.IsVisible}" Margin="0,0,8,8"
+                IsVisible="{Binding TodayCard.EffectiveIsVisible}" Margin="0,0,8,8"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
-            <TextBlock Text="HEUTE" FontSize="11" FontWeight="Bold"
+            <TextBlock Text="Heute" FontSize="14" FontWeight="SemiBold"
                       Opacity="0.5" Margin="0,0,0,10"/>
            <ItemsControl ItemsSource="{Binding TodaysLessons}">
              <ItemsControl.ItemTemplate>
@@ -143,12 +173,12 @@

        <!-- Offene Aufgaben -->
        <Border Grid.Column="{Binding TasksCard.Column}" Grid.Row="{Binding TasksCard.Row}"
-                IsVisible="{Binding TasksCard.IsVisible}" Margin="8,0,0,8"
+                IsVisible="{Binding TasksCard.EffectiveIsVisible}" Margin="8,0,0,8"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
            <Grid ColumnDefinitions="*,Auto,Auto" Margin="0,0,0,10">
-              <TextBlock Grid.Column="0" Text="OFFENE AUFGABEN" FontSize="11" FontWeight="Bold"
+              <TextBlock Grid.Column="0" Text="Offene Aufgaben" FontSize="14" FontWeight="SemiBold"
                         Opacity="0.5" VerticalAlignment="Center"/>
              <Button Grid.Column="1" Content="🔔＋" FontSize="12" Padding="7,2" Margin="0,0,4,0"
                      ToolTip.Tip="Erinnerung anlegen" Command="{Binding AddReminderCommand}"/>
@@ -180,7 +210,7 @@
        <!-- Kalender: feste Position direkt unter Heute/Aufgaben, damit die wachsende
             Lerngruppen-Liste darunter ihn nicht nach unten verdrängt. -->
        <Border Grid.Column="{Binding CalendarCard.Column}" Grid.Row="{Binding CalendarCard.Row}"
-                IsVisible="{Binding CalendarCard.IsVisible}" Margin="0,0,8,8"
+                IsVisible="{Binding CalendarCard.EffectiveIsVisible}" Margin="0,0,8,8"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel Spacing="8">
@@ -321,7 +351,7 @@

        <!-- Offene Entschuldigungen: neben dem Kalender, ebenfalls feste Position -->
        <Border Grid.Column="{Binding ExcusesCard.Column}" Grid.Row="{Binding ExcusesCard.Row}"
-                IsVisible="{Binding ExcusesCard.IsVisible}" Margin="8,0,0,8" VerticalAlignment="Top"
+                IsVisible="{Binding ExcusesCard.EffectiveIsVisible}" Margin="8,0,0,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -355,7 +385,7 @@

        <!-- Fehlzeiten-Warnung (5.2.3) -->
        <Border Grid.Column="{Binding AttendanceCard.Column}" Grid.Row="{Binding AttendanceCard.Row}"
-                IsVisible="{Binding AttendanceCard.IsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
+                IsVisible="{Binding AttendanceCard.EffectiveIsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -385,7 +415,7 @@

        <!-- Förderplan-Wiedervorlage (5.3.2) -->
        <Border Grid.Column="{Binding SupportCard.Column}" Grid.Row="{Binding SupportCard.Row}"
-                IsVisible="{Binding SupportCard.IsVisible}" Margin="8,0,0,8" VerticalAlignment="Top"
+                IsVisible="{Binding SupportCard.EffectiveIsVisible}" Margin="8,0,0,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -416,7 +446,7 @@

        <!-- Anstehende Termine (9.3) -->
        <Border Grid.Column="{Binding UpcomingCard.Column}" Grid.Row="{Binding UpcomingCard.Row}"
-                IsVisible="{Binding UpcomingCard.IsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
+                IsVisible="{Binding UpcomingCard.EffectiveIsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -453,7 +483,7 @@

        <!-- Offene Korrekturen (9.4) -->
        <Border Grid.Column="{Binding CorrectionsCard.Column}" Grid.Row="{Binding CorrectionsCard.Row}"
-                IsVisible="{Binding CorrectionsCard.IsVisible}" Margin="8,0,0,8" VerticalAlignment="Top"
+                IsVisible="{Binding CorrectionsCard.EffectiveIsVisible}" Margin="8,0,0,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -486,7 +516,7 @@

        <!-- Ungeplante Stunden -->
        <Border Grid.Column="{Binding UnplannedCard.Column}" Grid.Row="{Binding UnplannedCard.Row}"
-                IsVisible="{Binding UnplannedCard.IsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
+                IsVisible="{Binding UnplannedCard.EffectiveIsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -516,7 +546,7 @@

        <!-- Auffälligkeiten (9.5) -->
        <Border Grid.Column="{Binding AlertsCard.Column}" Grid.Row="{Binding AlertsCard.Row}"
-                IsVisible="{Binding AlertsCard.IsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
+                IsVisible="{Binding AlertsCard.EffectiveIsVisible}" Margin="0,0,8,8" VerticalAlignment="Top"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -550,7 +580,7 @@

        <!-- Meine Lerngruppen -->
        <Border Grid.Column="{Binding GroupsCard.Column}" Grid.Row="{Binding GroupsCard.Row}"
-                IsVisible="{Binding GroupsCard.IsVisible}"
+                IsVisible="{Binding GroupsCard.EffectiveIsVisible}"
                Background="{DynamicResource SystemControlBackgroundAltHighBrush}"
                CornerRadius="8" Padding="16">
          <StackPanel>
@@ -5,13 +5,6 @@
             x:Class="LehrerApp.Desktop.Views.Groups.GroupListView"
             x:DataType="vm:GroupListViewModel">

-  <UserControl.Styles>
-    <Style Selector="TextBlock.overdue">
-      <Setter Property="Foreground" Value="Red"/>
-      <Setter Property="FontWeight" Value="SemiBold"/>
-    </Style>
-  </UserControl.Styles>
-
  <Grid RowDefinitions="Auto,*">

    <!-- Kopfzeile mit Schuljahr-Wähler und Neu-Button -->
@@ -28,180 +21,85 @@
      </Grid>
    </Border>

-    <!-- Master-Detail: Liste links, Übersicht rechts -->
-    <Grid Grid.Row="1" ColumnDefinitions="260,*">
+    <!-- Eine Navigationsebene: Karten öffnen direkt das Gruppendetail. Die Verwaltung sitzt
+         am jeweiligen Eintrag und benötigt keine vorgeschaltete Bereichsauswahl mehr. -->
+    <Grid Grid.Row="1" RowDefinitions="Auto,*">
+      <Grid Grid.Row="0" ColumnDefinitions="*,Auto" Margin="24,18,24,8">
+        <TextBox Grid.Column="0" Text="{Binding SearchText}"
+                 PlaceholderText="Name oder Fach suchen …" MaxWidth="560"
+                 HorizontalAlignment="Stretch"/>
+        <ToggleSwitch Grid.Column="1" Content="Archiv anzeigen" IsChecked="{Binding ShowArchived}"
+                      Margin="20,0,0,0" VerticalAlignment="Center"/>
+      </Grid>

-      <!-- Linke Spalte: Sucheingabe + Listenansicht -->
-      <Border Grid.Column="0"
-              BorderBrush="{DynamicResource SystemControlForegroundBaseLowBrush}"
-              BorderThickness="0,0,1,0">
-        <DockPanel>
-          <StackPanel DockPanel.Dock="Top" Margin="12,8" Spacing="8">
-            <TextBox Text="{Binding SearchText}" PlaceholderText="Suchen…"/>
-            <ToggleSwitch Content="Archiv anzeigen" IsChecked="{Binding ShowArchived}"/>
-          </StackPanel>
-          <TextBlock Text="{Binding EmptyListMessage}" TextWrapping="Wrap"
-                     Margin="16,12" FontSize="12" Opacity="0.45"
-                     IsVisible="{Binding HasNoGroups}"/>
-          <ListBox ItemsSource="{Binding Groups}"
-                   SelectedItem="{Binding SelectedGroup}">
-            <ListBox.ItemTemplate>
-              <DataTemplate DataType="vm:GroupListItem">
-                <Grid ColumnDefinitions="4,*" Margin="2,4">
-                  <Border Grid.Column="0" Width="4" CornerRadius="2"
-                          Background="{DynamicResource SystemAccentColor}"
-                          Margin="0,0,10,0"/>
-                  <StackPanel Grid.Column="1">
-                    <Grid ColumnDefinitions="*,Auto">
-                      <TextBlock Grid.Column="0" Text="{Binding Name}"
-                                 FontWeight="SemiBold" FontSize="13"/>
-                      <TextBlock Grid.Column="1" Text="{Binding TypeLabel}"
-                                 FontSize="11" Opacity="0.5"/>
-                    </Grid>
-                    <TextBlock Text="{Binding Subject}" FontSize="12" Opacity="0.65"
-                               IsVisible="{Binding Subject, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
-                    <TextBlock Text="{Binding GradingLabel}" FontSize="11" Opacity="0.4"/>
-                  </StackPanel>
-                </Grid>
-              </DataTemplate>
-            </ListBox.ItemTemplate>
-          </ListBox>
-        </DockPanel>
-      </Border>
-
-      <!-- Rechte Spalte: Platzhalter wenn keine Auswahl -->
-      <StackPanel Grid.Column="1" HorizontalAlignment="Center"
-                  VerticalAlignment="Center" Spacing="8"
-                  IsVisible="{Binding SelectedGroup, Converter={x:Static ObjectConverters.IsNull}}">
-        <TextBlock Text="Gruppe auswählen" FontSize="16" Opacity="0.4"
-                   HorizontalAlignment="Center"/>
-        <TextBlock Text="oder ＋ Neue Gruppe anlegen" FontSize="12" Opacity="0.3"
-                   HorizontalAlignment="Center"/>
+      <StackPanel Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center" Spacing="10"
+                  IsVisible="{Binding HasNoGroups}">
+        <TextBlock Text="{Binding EmptyListMessage}" FontSize="15" Opacity="0.55"
+                   TextWrapping="Wrap" TextAlignment="Center"/>
+        <Button Content="＋ Erste Lerngruppe anlegen" Command="{Binding AddGroupCommand}"
+                IsVisible="{Binding !ShowArchived}" HorizontalAlignment="Center"/>
      </StackPanel>

-      <!-- Rechte Spalte: Gruppen-Übersicht wenn ausgewählt -->
-      <ScrollViewer Grid.Column="1"
-                    IsVisible="{Binding SelectedGroup, Converter={x:Static ObjectConverters.IsNotNull}}">
-        <StackPanel Margin="28,24" Spacing="20">
-
-          <!-- Gruppenname und Kurzinfos -->
-          <Grid ColumnDefinitions="*,Auto">
-            <StackPanel Grid.Column="0" Spacing="4">
-              <TextBlock Text="{Binding SelectedGroupDisplayName}"
-                         FontSize="24" FontWeight="SemiBold" TextWrapping="Wrap"/>
-              <TextBlock Text="{Binding SelectedGroupSubtitle}"
-                         FontSize="12" Opacity="0.55"/>
-            </StackPanel>
-            <Button Grid.Column="1" Content="⋯  Verwalten" VerticalAlignment="Top"
-                    Margin="16,0,0,0">
-              <Button.Flyout>
-                <MenuFlyout>
-                  <MenuItem Header="Details bearbeiten"
-                            Command="{Binding EditGroupCommand}"/>
-                  <MenuItem Header="Ins nächste Schuljahr übernehmen …"
-                            Command="{Binding RollOverGroupCommand}"/>
-                  <MenuItem Header="{Binding SelectedGroup.ArchiveActionLabel}"
-                            Command="{Binding ToggleArchiveCommand}"/>
-                  <Separator/>
-                  <MenuItem Header="Teilnehmer importieren (bald)" IsEnabled="False"
-                            ToolTip.Tip="Import aus dem Teilnehmerexport der Lernplattform folgt."/>
-                  <Separator/>
-                  <MenuItem Header="Lerngruppe löschen"
-                            Command="{Binding DeleteGroupCommand}"/>
-                </MenuFlyout>
-              </Button.Flyout>
-            </Button>
-          </Grid>
-
-          <Separator/>
-
-          <!-- Schnellüberblick (Nutzer-Feedback) -->
-          <StackPanel Spacing="8" IsVisible="{Binding QuickHasAnything}">
-            <TextBlock Text="SCHNELLÜBERBLICK" FontSize="10" FontWeight="Bold" Opacity="0.4"/>
-            <StackPanel Spacing="1" IsVisible="{Binding QuickHasNextLesson}">
-              <TextBlock Text="Nächste Stunde" FontSize="11" Opacity="0.55"/>
-              <TextBlock Text="{Binding QuickNextLessonLabel}" FontSize="13" TextWrapping="Wrap"/>
-            </StackPanel>
-            <StackPanel Spacing="1" IsVisible="{Binding QuickHasNextExam}">
-              <TextBlock Text="Nächste Klausur" FontSize="11" Opacity="0.55"/>
-              <TextBlock Text="{Binding QuickNextExamLabel}" FontSize="13" TextWrapping="Wrap"/>
-            </StackPanel>
-            <StackPanel Spacing="4" IsVisible="{Binding QuickHasTasks}">
-              <TextBlock Text="Wichtige Aufgaben" FontSize="11" Opacity="0.55"/>
-              <ItemsControl ItemsSource="{Binding QuickTasks}">
-                <ItemsControl.ItemTemplate>
-                  <DataTemplate x:DataType="vm:GroupTaskItem">
-                    <Grid ColumnDefinitions="4,Auto,*,Auto" Margin="0,2">
-                      <Border Grid.Column="0" Background="{Binding PriorityColorHex}" CornerRadius="2"
-                              Margin="0,0,6,0" IsVisible="{Binding IsHighPriority}"/>
-                      <TextBlock Grid.Column="1" Text="🔔" FontSize="11" Margin="0,0,4,0"
-                                 IsVisible="{Binding IsReminder}" VerticalAlignment="Center"/>
-                      <TextBlock Grid.Column="2" Text="{Binding Title}" FontSize="12"
-                                 TextTrimming="CharacterEllipsis" VerticalAlignment="Center"/>
-                      <TextBlock Grid.Column="3" Text="{Binding DueDateDisplay}" FontSize="11"
-                                 VerticalAlignment="Center" Classes.overdue="{Binding IsOverdue}"/>
-                    </Grid>
-                  </DataTemplate>
-                </ItemsControl.ItemTemplate>
-              </ItemsControl>
-            </StackPanel>
-          </StackPanel>
-          <Separator IsVisible="{Binding QuickHasAnything}"/>
-
-          <!-- Bereichs-Navigation -->
-          <TextBlock Text="BEREICHE" FontSize="10" FontWeight="Bold"
-                     Opacity="0.4" Margin="0,0,0,2"/>
-          <StackPanel Spacing="6">
-            <Button Content="📊  Übersicht"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="0"/>
-            <Button Content="👤  Schülerliste"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="1"/>
-            <Button Content="🪑  Sitzpläne"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="2"/>
-            <Button Content="✋  Mitarbeit"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="3"/>
-            <Button Content="📝  Klausuren"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="4"/>
-            <Button Content="🔢  Notenübersicht"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="5"/>
-            <Button Content="📅  Unterrichtsplanung"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="6"/>
-            <Button Content="🎯  Kompetenzübersicht"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="7"/>
-            <Button Content="📋  Dokumentation"
-                    HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
-                    Padding="12,9"
-                    Command="{Binding NavigateToSectionCommand}"
-                    CommandParameter="8"/>
-          </StackPanel>
-
-        </StackPanel>
+      <ScrollViewer Grid.Row="1" IsVisible="{Binding !HasNoGroups}"
+                    HorizontalScrollBarVisibility="Disabled">
+        <ItemsControl ItemsSource="{Binding Groups}" Margin="20,12,20,24">
+          <ItemsControl.ItemsPanel>
+            <ItemsPanelTemplate>
+              <WrapPanel Orientation="Horizontal"/>
+            </ItemsPanelTemplate>
+          </ItemsControl.ItemsPanel>
+          <ItemsControl.ItemTemplate>
+            <DataTemplate x:DataType="vm:GroupListItem">
+              <Border Width="330" MinHeight="116" Margin="6" CornerRadius="9"
+                      Background="{DynamicResource AppCardBackgroundBrush}"
+                      BorderBrush="{DynamicResource AppCardBorderBrush}" BorderThickness="1">
+                <Grid ColumnDefinitions="4,*,Auto">
+                  <Border Grid.Column="0" Background="{DynamicResource SystemAccentColor}"
+                          CornerRadius="9,0,0,9"/>
+                  <Button Grid.Column="1" Background="Transparent" BorderThickness="0"
+                          Padding="16,14" HorizontalAlignment="Stretch"
+                          HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch"
+                          Command="{Binding OpenCommand}"
+                          AutomationProperties.Name="{Binding OpenAutomationName}">
+                    <StackPanel Spacing="6">
+                      <TextBlock Text="{Binding Name}" FontSize="17" FontWeight="SemiBold"
+                                 TextTrimming="CharacterEllipsis"/>
+                      <TextBlock Text="{Binding Subject}" FontSize="13" Opacity="0.7"
+                                 TextTrimming="CharacterEllipsis"
+                                 IsVisible="{Binding Subject, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
+                      <StackPanel Orientation="Horizontal" Spacing="7">
+                        <Border Background="{DynamicResource AppChipBackgroundBrush}" CornerRadius="8" Padding="7,2">
+                          <TextBlock Text="{Binding TypeLabel}" FontSize="10" Opacity="0.75"/>
+                        </Border>
+                        <TextBlock Text="{Binding GradingLabel}" FontSize="11" Opacity="0.5"
+                                   VerticalAlignment="Center"/>
+                      </StackPanel>
+                    </StackPanel>
+                  </Button>
+                  <Button Grid.Column="2" Content="⋯" Width="36" Height="32" Margin="0,10,10,0"
+                          Padding="0" VerticalAlignment="Top"
+                          ToolTip.Tip="Lerngruppe verwalten"
+                          AutomationProperties.Name="{Binding ManageAutomationName}">
+                    <Button.Flyout>
+                      <MenuFlyout>
+                        <MenuItem Header="Details bearbeiten" IsEnabled="{Binding IsActive}"
+                                  Command="{Binding EditCommand}"/>
+                        <MenuItem Header="Ins nächste Schuljahr übernehmen …"
+                                  Command="{Binding RollOverCommand}"/>
+                        <MenuItem Header="{Binding ArchiveActionLabel}"
+                                  Command="{Binding ToggleArchiveCommand}"/>
+                        <Separator/>
+                        <MenuItem Header="Lerngruppe löschen" IsEnabled="{Binding IsActive}"
+                                  Command="{Binding DeleteCommand}"/>
+                      </MenuFlyout>
+                    </Button.Flyout>
+                  </Button>
+                </Grid>
+              </Border>
+            </DataTemplate>
+          </ItemsControl.ItemTemplate>
+        </ItemsControl>
      </ScrollViewer>
-
    </Grid>
  </Grid>
 </UserControl>
@@ -146,6 +146,20 @@

        <ScrollViewer>
          <StackPanel Classes="navitems" Margin="8,12,8,0" Spacing="2">
+            <Button Classes="navitem" HorizontalAlignment="Stretch"
+                    HorizontalContentAlignment="Left" CornerRadius="6"
+                    Click="OnOpenCommandPaletteClick"
+                    ToolTip.Tip="Suchen und schnell erfassen (Strg/⌘+K)"
+                    AutomationProperties.Name="Suchen und schnell erfassen">
+              <Grid ColumnDefinitions="Auto,*,Auto">
+                <TextBlock Classes="navicon" Text="⌕" TextAlignment="Center"/>
+                <TextBlock Grid.Column="1" Classes="navlabel" Text="Suchen / Erfassen"/>
+                <TextBlock Grid.Column="2" Classes="navlabel" Text="⌘K" FontSize="10" Opacity="0.45"
+                           VerticalAlignment="Center"/>
+              </Grid>
+            </Button>
+            <Separator Margin="4,6"/>
+
            <Button Classes="navitem" Classes.active="{Binding IsDashboardActive}" HorizontalAlignment="Stretch"
                    HorizontalContentAlignment="Left"
                    CornerRadius="6"
@@ -241,6 +255,77 @@

  </DrawerPage>

+  <!-- Globale Suche und Schnellerfassung (14.2). Bewusst als Overlay auf der aktuellen Seite:
+       Der Nutzer behält den Kontext und kann mit Escape ohne Navigation zurückkehren. -->
+  <Border Background="#A0000000" IsVisible="{Binding IsCommandPaletteOpen}"
+          AutomationProperties.Name="Globale Suche und Schnellerfassung">
+    <Grid>
+      <Button Background="Transparent" BorderThickness="0"
+              Command="{Binding CloseCommandPaletteCommand}"
+              AutomationProperties.Name="Suche schließen"/>
+      <Border Width="680" MaxHeight="570" Margin="24" Padding="0"
+              HorizontalAlignment="Center" VerticalAlignment="Top"
+              Background="{DynamicResource AppCardBackgroundBrush}"
+              BorderBrush="{DynamicResource AppCardBorderBrush}" BorderThickness="1"
+              CornerRadius="12">
+        <Grid RowDefinitions="Auto,Auto,*,Auto">
+          <Grid Grid.Row="0" ColumnDefinitions="Auto,*,Auto" Margin="18,16,18,10">
+            <TextBlock Text="⌕" FontSize="24" VerticalAlignment="Center" Margin="0,0,10,0"/>
+            <TextBox x:Name="CommandPaletteSearchBox" Grid.Column="1"
+                     Text="{Binding CommandPalette.Query, UpdateSourceTrigger=PropertyChanged}"
+                     PlaceholderText="Schüler, Lerngruppe, Klausur oder Aufgabe suchen …"
+                     FontSize="16" BorderThickness="0" Background="Transparent"
+                     AutomationProperties.Name="Suchbegriff"/>
+            <Button Grid.Column="2" Content="Esc" FontSize="10" Padding="8,3"
+                    Command="{Binding CloseCommandPaletteCommand}"
+                    AutomationProperties.Name="Suche schließen"/>
+          </Grid>
+          <Separator Grid.Row="1"/>
+          <ListBox Grid.Row="2" ItemsSource="{Binding CommandPalette.Results}"
+                   SelectedItem="{Binding CommandPalette.SelectedResult}"
+                   Background="Transparent" BorderThickness="0" Margin="8"
+                   MaxHeight="420">
+            <ListBox.ItemTemplate>
+              <DataTemplate x:DataType="vm:GlobalSearchResult">
+                <Button Background="Transparent" BorderThickness="0" Padding="10,8"
+                        HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch"
+                        Command="{Binding $parent[Window].((vm:MainWindowViewModel)DataContext).CommandPalette.ExecuteCommand}"
+                        CommandParameter="{Binding}">
+                  <Grid ColumnDefinitions="38,*,Auto">
+                    <Border Width="30" Height="30" CornerRadius="7"
+                            Background="{DynamicResource AppAccentSoftBackgroundBrush}"
+                            VerticalAlignment="Center">
+                      <TextBlock Text="{Binding Icon}" FontWeight="SemiBold"
+                                 Foreground="{DynamicResource AppAccentOnSoftBrush}"
+                                 HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                    </Border>
+                    <StackPanel Grid.Column="1" Margin="10,0">
+                      <TextBlock Text="{Binding Title}" FontSize="14" FontWeight="SemiBold"/>
+                      <TextBlock Text="{Binding Subtitle}" FontSize="11" Opacity="0.6"
+                                 TextTrimming="CharacterEllipsis"/>
+                    </StackPanel>
+                    <Border Grid.Column="2" Padding="7,3" CornerRadius="8"
+                            Background="{DynamicResource AppChipBackgroundBrush}"
+                            VerticalAlignment="Center">
+                      <TextBlock Text="{Binding KindLabel}" FontSize="10" Opacity="0.7"/>
+                    </Border>
+                  </Grid>
+                </Button>
+              </DataTemplate>
+            </ListBox.ItemTemplate>
+          </ListBox>
+          <TextBlock Grid.Row="2" Text="Keine passenden Ergebnisse."
+                     Classes="emptyhint" HorizontalAlignment="Center" Margin="20"
+                     IsVisible="{Binding CommandPalette.ShowNoResults}"/>
+          <Grid Grid.Row="3" ColumnDefinitions="*,Auto" Margin="18,8,18,14">
+            <TextBlock Text="↑↓ auswählen · Enter öffnen · Esc schließen" FontSize="10" Opacity="0.5"/>
+            <TextBlock Grid.Column="1" Text="Strg/⌘ + K" FontSize="10" Opacity="0.5"/>
+          </Grid>
+        </Grid>
+      </Border>
+    </Grid>
+  </Border>
+
  <!-- Dauerhafte Meldung bei einer echten Protokoll-Inkompatibilität. Als Overlay außerhalb
       von DrawerPage.Content bleibt der DataContext das MainWindowViewModel; innerhalb des
       ContentPresenters würde eine fehlgeschlagene Bindung IsVisible auf true stehen lassen. -->
@@ -1,5 +1,6 @@
 using Avalonia.Controls;
 using Avalonia.Input;
+using Avalonia.Threading;
 using LehrerApp.Desktop.Services;
 using LehrerApp.Desktop.ViewModels;
 using LehrerApp.Sync;
@@ -19,6 +20,62 @@ public partial class MainWindow : Window
        PointerMoved   += (_, _) => NotifyActivity();
        PointerPressed += (_, _) => NotifyActivity();
        KeyDown        += (_, _) => NotifyActivity();
+        KeyDown        += OnWindowKeyDown;
+    }
+
+    private void OnWindowKeyDown(object? sender, KeyEventArgs e)
+    {
+        if (DataContext is not MainWindowViewModel vm) return;
+
+        var commandModifier = (e.KeyModifiers & (KeyModifiers.Control | KeyModifiers.Meta)) != 0;
+        if (commandModifier && e.Key == Key.K)
+        {
+            vm.OpenCommandPaletteCommand.Execute(null);
+            FocusCommandPalette();
+            e.Handled = true;
+            return;
+        }
+
+        if (!vm.IsCommandPaletteOpen) return;
+        if (e.Key == Key.Escape)
+        {
+            vm.CloseCommandPaletteCommand.Execute(null);
+            e.Handled = true;
+        }
+        else if (e.Key == Key.Enter)
+        {
+            vm.CommandPalette.ExecuteCommand.Execute(vm.CommandPalette.SelectedResult);
+            e.Handled = true;
+        }
+        else if (e.Key is Key.Down or Key.Up)
+        {
+            MoveCommandPaletteSelection(vm, e.Key == Key.Down ? 1 : -1);
+            e.Handled = true;
+        }
+    }
+
+    private void OnOpenCommandPaletteClick(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        if (DataContext is MainWindowViewModel vm)
+            vm.OpenCommandPaletteCommand.Execute(null);
+        FocusCommandPalette();
+    }
+
+    private void FocusCommandPalette() => Dispatcher.UIThread.Post(() =>
+    {
+        if (this.FindControl<TextBox>("CommandPaletteSearchBox") is { } search)
+        {
+            search.Focus();
+            search.SelectAll();
+        }
+    });
+
+    private static void MoveCommandPaletteSelection(MainWindowViewModel vm, int delta)
+    {
+        var results = vm.CommandPalette.Results;
+        if (results.Count == 0) return;
+        var current = vm.CommandPalette.SelectedResult is { } selected ? results.IndexOf(selected) : -1;
+        vm.CommandPalette.SelectedResult = results[Math.Clamp(current + delta, 0, results.Count - 1)];
    }

    public void EnableFinalSync(SyncEngine syncEngine)