Output dialog family styling adjustments, splitter refinements, align package manager page controls, and other minor fixes

src/UniGetUI.Avalonia/Infrastructure/OperationHistoryLogDialog.cs

@@ -4,6 +4,7 @@
 using Avalonia.Layout;
 using Avalonia.Media;
 using Avalonia.Platform.Storage;
+using Avalonia.Styling;
 using UniGetUI.Avalonia.ViewModels.Pages.LogPages;
 using UniGetUI.Avalonia.Views;
 using UniGetUI.Avalonia.Views.Controls;
@@ -21,9 +22,9 @@ public static async Task ShowAsync(OperationHistoryRecord record)
         if (MainWindow.Instance is not { } owner)
             return;
 
-        bool dark = ThemeHelper.IsDark;
-        var defaultBrush = new SolidColorBrush(dark ? Color.FromRgb(250, 250, 250) : Color.FromRgb(0, 0, 0));
-        var errorBrush = new SolidColorBrush(dark ? Color.FromRgb(255, 80, 80) : Color.FromRgb(205, 0, 0));
+        ThemeVariant theme = ThemeHelper.Variant;
+        IBrush defaultBrush = LookupBrush("TextFillColorPrimaryBrush", theme, Brushes.White);
+        IBrush errorBrush = LookupBrush("StatusErrorForeground", theme, Brushes.Red);
 
         var lines = record.Output
             .Select(l => new LogLineItem(l.Text.Replace("\r", "").Replace("\n", ""),
@@ -45,7 +46,8 @@ public static async Task ShowAsync(OperationHistoryRecord record)
             MinWidth = 460,
             MinHeight = 300,
             Title = CoreTools.Translate("Operation log") + (target.Length > 0 ? $" — {target}" : ""),
-            Background = Application.Current?.FindResource("AppDialogBackground") as IBrush,
+            TitleMargin = new Thickness(24, 0, 0, 0),
+            Background = LookupBrush("AppDialogBackground", theme, Brushes.Transparent),
         };
 
         var copyButton = CreateDialogButton(CoreTools.Translate("Copy to clipboard"));
@@ -69,6 +71,7 @@ public static async Task ShowAsync(OperationHistoryRecord record)
         };
 
         var closeButton = CreateDialogButton(CoreTools.Translate("Close"), 100);
+        closeButton.Classes.Remove("secondary-action");
         closeButton.Classes.Add("accent");
         closeButton.Click += (_, _) => dialog.Close();
 
@@ -84,7 +87,7 @@ public static async Task ShowAsync(OperationHistoryRecord record)
         {
             CornerRadius = new CornerRadius(8),
             ClipToBounds = true,
-            Background = Application.Current?.FindResource("AppDialogDarkBackground") as IBrush,
+            Background = LookupBrush("AppWindowBackground", theme, Brushes.Transparent),
             Child = editor,
         };
         Grid.SetRow(editorBorder, 1);
@@ -96,19 +99,41 @@ public static async Task ShowAsync(OperationHistoryRecord record)
             HorizontalAlignment = HorizontalAlignment.Right,
             Children = { closeButton },
         };
-        Grid.SetRow(footer, 2);
 
-        dialog.Content = new Grid
+        var body = new Grid
         {
-            Margin = new Thickness(16),
-            RowDefinitions = new RowDefinitions("Auto,*,Auto"),
+            Margin = new Thickness(24, 0, 24, 24),
+            RowDefinitions = new RowDefinitions("Auto,*"),
             RowSpacing = 10,
-            Children = { toolbar, editorBorder, footer },
+            Children = { toolbar, editorBorder },
+        };
+        Grid.SetRow(body, 0);
+
+        var footerSurface = new Border
+        {
+            Background = LookupBrush("AppWindowBackground", theme, Brushes.Transparent),
+            Padding = new Thickness(24),
+            Child = footer,
+        };
+        Grid.SetRow(footerSurface, 1);
+
+        dialog.Content = new Grid
+        {
+            RowDefinitions = new RowDefinitions("*,Auto"),
+            Children = { body, footerSurface },
         };
 
         await dialog.ShowDialog(owner);
     }
 
+    private static IBrush LookupBrush(string key, ThemeVariant theme, IBrush fallback)
+    {
+        if (Application.Current?.TryGetResource(key, theme, out var resource) == true &&
+            resource is IBrush brush)
+            return brush;
+        return fallback;
+    }
+
     private static Button CreateDialogButton(string content, double minWidth = 0) => new()
     {
         Content = content,
@@ -117,6 +142,7 @@ public static async Task ShowAsync(OperationHistoryRecord record)
         Padding = new Thickness(11, 5, 11, 6),
         CornerRadius = new CornerRadius(4),
         FontSize = 14,
+        Classes = { "secondary-action" },
         HorizontalContentAlignment = HorizontalAlignment.Center,
         VerticalContentAlignment = VerticalAlignment.Center,
     };

src/UniGetUI.Avalonia/Views/DialogPages/OperationFailedDialog.axaml

@@ -4,36 +4,76 @@
         xmlns:automation="clr-namespace:Avalonia.Automation;assembly=Avalonia.Controls"
         xmlns:controls="using:UniGetUI.Avalonia.Views.Controls"
         x:Class="UniGetUI.Avalonia.Views.DialogPages.OperationFailedDialog"
-        MaxWidth="800"
+        MaxWidth="850"
         MinWidth="500"
-        MaxHeight="550"
+        MaxHeight="490"
         MinHeight="300"
+        TitleMargin="24,0,0,0"
         Background="{DynamicResource AppDialogBackground}">
 
-    <Grid RowDefinitions="Auto,*,Auto">
+    <dialogs:ImmersiveDialog.Styles>
+        <!-- Scoped to this dialog family: these do not alter global Button resources. -->
+        <Style Selector="Button.operation-dialog-action">
+            <Setter Property="Height" Value="32"/>
+            <Setter Property="MinWidth" Value="0"/>
+            <Setter Property="CornerRadius" Value="4"/>
+            <Setter Property="Background" Value="{DynamicResource SettingsCardBackground}"/>
+            <Setter Property="BorderBrush" Value="{DynamicResource SecondaryActionBorderBrush}"/>
+            <Setter Property="BorderThickness" Value="{DynamicResource SecondaryActionBorderThickness}"/>
+            <Setter Property="FontSize" Value="14"/>
+            <Setter Property="HorizontalContentAlignment" Value="Center"/>
+            <Setter Property="VerticalContentAlignment" Value="Center"/>
+        </Style>
+        <Style Selector="Button.operation-dialog-action:pointerover">
+            <Setter Property="Background" Value="{DynamicResource SettingsCardHoverBackground}"/>
+        </Style>
+        <Style Selector="Button.operation-dialog-action:pressed">
+            <Setter Property="Background" Value="{DynamicResource SubtleFillColorTertiaryBrush}"/>
+            <Setter Property="Foreground" Value="{DynamicResource TextFillColorSecondaryBrush}"/>
+        </Style>
+        <Style Selector="SplitButton.operation-dialog-action">
+            <Setter Property="Height" Value="32"/>
+            <Setter Property="MinWidth" Value="0"/>
+            <Setter Property="CornerRadius" Value="4"/>
+            <Setter Property="Background" Value="{DynamicResource SettingsCardBackground}"/>
+            <Setter Property="BorderBrush" Value="{DynamicResource SecondaryActionBorderBrush}"/>
+            <Setter Property="BorderThickness" Value="{DynamicResource SecondaryActionBorderThickness}"/>
+            <Setter Property="FontSize" Value="14"/>
+        </Style>
+        <Style Selector="SplitButton.operation-dialog-action:pointerover">
+            <Setter Property="Background" Value="{DynamicResource SettingsCardHoverBackground}"/>
+        </Style>
+        <Style Selector="SplitButton.operation-dialog-action:pressed">
+            <Setter Property="Background" Value="{DynamicResource SubtleFillColorTertiaryBrush}"/>
+            <Setter Property="Foreground" Value="{DynamicResource TextFillColorSecondaryBrush}"/>
+        </Style>
+    </dialogs:ImmersiveDialog.Styles>
+
+    <Grid RowDefinitions="Auto,*,Auto"
+          Background="{DynamicResource AppDialogBackground}">
 
         <!-- ── Header ── -->
-        <Border Grid.Row="0" Padding="16,14,16,10">
+        <Border Grid.Row="0" Padding="24,8,24,12">
             <TextBlock x:Name="HeaderContent"
                        TextWrapping="WrapWithOverflow"
                        FontSize="14"/>
         </Border>
 
         <!-- ── Colored output log ── -->
         <Border Grid.Row="1"
-                Margin="8,0,8,8"
+                Margin="24,0,24,24"
                 CornerRadius="6"
                 ClipToBounds="True"
-                Background="{DynamicResource AppDialogDarkBackground}">
+                Background="{DynamicResource AppWindowBackground}">
             <controls:LogTextEditor x:Name="OutputText"
                                     automation:AutomationProperties.AccessibilityView="Raw"/>
         </Border>
 
         <!-- ── Footer buttons ── -->
         <Border Grid.Row="2"
-                BorderThickness="0,1,0,0"
-                Padding="16,10">
+                Background="{DynamicResource AppWindowBackground}">
             <Grid x:Name="ButtonsLayout"
+                  Margin="24"
                   ColumnSpacing="8">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="*"/>

src/UniGetUI.Avalonia/Views/DialogPages/OperationFailedDialog.axaml.cs

@@ -37,6 +37,7 @@ public OperationFailedDialog(AbstractOperation operation)
             Content = CoreTools.Translate("Close"),
             HorizontalAlignment = HorizontalAlignment.Stretch,
             HorizontalContentAlignment = HorizontalAlignment.Center,
+            Classes = { "operation-dialog-action" },
         };
         closeButton.Click += (_, _) => Close();
 
@@ -149,6 +150,7 @@ private Control SimpleRetryButton(AbstractOperation operation, string retryMode,
             Content = label,
             HorizontalAlignment = HorizontalAlignment.Stretch,
             HorizontalContentAlignment = HorizontalAlignment.Center,
+            Classes = { "operation-dialog-action" },
         };
         button.Click += (_, _) =>
         {
@@ -170,6 +172,7 @@ string label
             Content = label,
             HorizontalAlignment = HorizontalAlignment.Stretch,
             HorizontalContentAlignment = HorizontalAlignment.Center,
+            Classes = { "operation-dialog-action" },
         };
         splitButton.Click += (_, _) =>
         {

src/UniGetUI.Avalonia/Views/DialogPages/OperationOutputWindow.axaml

@@ -6,17 +6,18 @@
         xmlns:controls="using:UniGetUI.Avalonia.Views.Controls"
         x:Class="UniGetUI.Avalonia.Views.DialogPages.OperationOutputWindow"
         x:DataType="vm:OperationOutputViewModel"
-        MaxWidth="700"
-        MinWidth="400"
-        MaxHeight="500"
+        MaxWidth="780"
+        MinWidth="460"
+        MaxHeight="520"
         MinHeight="300"
+        TitleMargin="24,0,0,0"
         Background="{DynamicResource AppDialogBackground}"
         Title="{Binding Title}">
 
-    <Border Margin="8"
+    <Border Margin="24,0,24,24"
             CornerRadius="6"
             ClipToBounds="True"
-            Background="{DynamicResource AppDialogDarkBackground}">
+            Background="{DynamicResource AppWindowBackground}">
         <controls:LogTextEditor x:Name="OutputText"
                                 automation:AutomationProperties.Name="{Binding Title}"
                                 automation:AutomationProperties.AccessibilityView="Raw"/>

src/UniGetUI.Avalonia/Views/DialogPages/PackageDetailsWindow.axaml

@@ -71,13 +71,6 @@
             <Setter Property="HorizontalContentAlignment" Value="Center"/>
             <Setter Property="VerticalContentAlignment" Value="Center"/>
         </Style>
-        <Style Selector="Button.action-main:pointerover /template/ ContentPresenter">
-            <Setter Property="Background" Value="{DynamicResource PackageActionHoverBackground}"/>
-        </Style>
-        <Style Selector="Button.action-chevron:pointerover /template/ ContentPresenter">
-            <Setter Property="Background" Value="{DynamicResource PackageActionHoverBackground}"/>
-        </Style>
-
         <!-- Screenshot pip dots (Button hosting an Ellipse) -->
         <Style Selector="Button.pip">
             <Setter Property="Background" Value="Transparent"/>

src/UniGetUI.Avalonia/Views/MainWindow.axaml

@@ -87,6 +87,40 @@
         <Style Selector="Button.caption-close:pressed /template/ ContentPresenter">
             <Setter Property="Background" Value="#A4262C"/>
         </Style>
+        <!-- WinUI-like splitter: the track fills the resize gap while a compact pill
+             marks the drag axis. -->
+        <Style Selector="GridSplitter.winui-horizontal-splitter">
+            <Setter Property="Background" Value="Transparent"/>
+            <Setter Property="Template">
+                <ControlTemplate>
+                    <!-- Match the visible splitter track to the operation-card width.
+                         OperationsList uses 8 DIPs of horizontal inset. -->
+                    <Border Background="{TemplateBinding Background}"
+                            Margin="8,0"
+                            CornerRadius="6">
+                        <Border Width="22" Height="4"
+                                CornerRadius="2"
+                                HorizontalAlignment="Center"
+                                VerticalAlignment="Center"
+                                Background="{DynamicResource TextFillColorTertiaryBrush}"
+                                IsHitTestVisible="False"/>
+                    </Border>
+                </ControlTemplate>
+            </Setter>
+        </Style>
+        <Style Selector="GridSplitter.winui-horizontal-splitter:pointerover">
+            <Setter Property="Background" Value="{DynamicResource SubtleFillColorSecondaryBrush}"/>
+        </Style>
+        <Style Selector="GridSplitter.winui-horizontal-splitter:pressed">
+            <Setter Property="Background" Value="{DynamicResource SubtleFillColorTertiaryBrush}"/>
+        </Style>
+        <Style Selector="Border.operations-panel-border">
+            <Setter Property="BorderBrush" Value="{DynamicResource AppBorderBrush}"/>
+        </Style>
+        <Style Selector="Border.operations-panel-border.splitter-active">
+            <!-- Preserve the one-DIP separator's layout while the splitter surface replaces it. -->
+            <Setter Property="BorderBrush" Value="Transparent"/>
+        </Style>
     </Window.Styles>
     <Panel>
         <!-- Solid inactive-state fallback, using the same theme resource as the #5111 Mica failure path. -->
@@ -151,7 +185,7 @@
             </ContentControl>
 
             <!-- ── Content: banners + page + operations ── -->
-            <Grid x:Name="ContentRoot" Grid.Column="1" RowDefinitions="*,4,Auto">
+            <Grid x:Name="ContentRoot" Grid.Column="1" RowDefinitions="*,0,Auto">
 
             <!-- ── Page content (banners now surface as bottom-right toasts; see ToastHost) ── -->
             <TransitioningContentControl Grid.Row="0"
@@ -169,18 +203,23 @@
 
             <!-- ── GridSplitter (only visible when operations are present) ── -->
             <GridSplitter x:Name="OperationsSplitter"
+                          Classes="winui-horizontal-splitter"
                           Grid.Row="1"
+                          Margin="0,0,0,2"
                           HorizontalAlignment="Stretch"
                           VerticalAlignment="Stretch"
+                          ResizeDirection="Rows"
                           IsVisible="{Binding OperationsSplitterVisible}"
-                          automation:AutomationProperties.AccessibilityView="Raw"
-                          Background="Transparent"/>
+                          PointerEntered="OperationsSplitter_PointerEntered"
+                          PointerExited="OperationsSplitter_PointerExited"
+                          automation:AutomationProperties.AccessibilityView="Raw"/>
 
             <!-- ── Operations panel ── -->
-            <Border Grid.Row="2"
+            <Border x:Name="OperationsPanelBorder"
+                    Classes="operations-panel-border"
+                    Grid.Row="2"
                     IsVisible="{Binding OperationsPanelVisible}"
                     BorderThickness="0,1,0,0"
-                    BorderBrush="{DynamicResource AppBorderBrush}"
                     automation:AutomationProperties.AccessibilityView="Control"
                     automation:AutomationProperties.Name="{t:Translate Operations}"
                     automation:AutomationProperties.LandmarkType="{x:Static peers:AutomationLandmarkType.Region}"
@@ -682,22 +721,43 @@
                               Width="10" Height="2"
                               HorizontalAlignment="Center" VerticalAlignment="Center"/>
                     </Button>
-                    <!-- Maximize / Restore: square outline, geometry swapped in code-behind -->
+                    <!-- Maximize / Restore Down. Windows uses the real ChromeRestore symbol from
+                         its caption-icon font; the path is retained as a portable fallback. -->
                     <Button x:Name="MaximizeButton"
                             Width="46" Height="44"
                             Classes="caption"
-                                                        automation:AutomationProperties.Name="{t:Translate Maximize}"
+                            automation:AutomationProperties.Name="{t:Translate Maximize}"
                             ToolTip.Tip="{t:Translate Maximize}"
                             Click="MaximizeButton_Click">
-                        <Path x:Name="MaximizeIcon"
-                              Stroke="{Binding $parent[Button].Foreground}"
-                              StrokeThickness="1"
-                              StrokeLineCap="Round"
-                                                            automation:AutomationProperties.AccessibilityView="Raw"
-
-                              Data="M0,0 H10 V10 H0 Z"
-                              Width="10" Height="10"
-                              HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        <Panel Width="16" Height="16"
+                               automation:AutomationProperties.AccessibilityView="Raw">
+                            <Path x:Name="MaximizeIcon"
+                                  Stroke="{Binding $parent[Button].Foreground}"
+                                  StrokeThickness="1"
+                                  StrokeJoin="Miter"
+                                  Data="M1.5,1.5 H10.5 V10.5 H1.5 Z"
+                                  Width="12" Height="12"
+                                  HorizontalAlignment="Center"
+                                  VerticalAlignment="Center"/>
+                            <TextBlock x:Name="RestoreIcon"
+                                       IsVisible="False"
+                                       Text="&#xE923;"
+                                       FontSize="10"
+                                       TextAlignment="Center"
+                                       HorizontalAlignment="Center"
+                                       VerticalAlignment="Center"/>
+                            <Path x:Name="RestoreFallbackIcon"
+                                  IsVisible="False"
+                                  Stroke="{Binding $parent[Button].Foreground}"
+                                  StrokeThickness="1"
+                                  StrokeLineCap="Round"
+                                  StrokeJoin="Round"
+                                  Data="M5,3 V2.5 A1.5,1.5 0 0 1 6.5,1 H12.5 A1.5,1.5 0 0 1 14,2.5 V8.5 A1.5,1.5 0 0 1 12.5,10 H11 M3.5,4 H9.5 A1.5,1.5 0 0 1 11,5.5 V12.5 A1.5,1.5 0 0 1 9.5,14 H3.5 A1.5,1.5 0 0 1 2,12.5 V5.5 A1.5,1.5 0 0 1 3.5,4 Z"
+                                  Width="10" Height="10"
+                                  Stretch="Uniform"
+                                  HorizontalAlignment="Center"
+                                  VerticalAlignment="Center"/>
+                        </Panel>
                     </Button>
                     <!-- Close: X -->
                     <Button Width="46" Height="44"