Design: fix status bar, white flash, button order, theme switching

- Android: windowBackground day/night colors fix white flash on navigation
- Android: status bar color set dynamically per theme in OnResume
- Android: AppearanceLightStatusBars set correctly (light icons in dark, dark in light)
- Android: overflow icon tinted white via view-tree walk in OnWindowFocusChanged
- AddConnection: reorder buttons Test → Connect → Save; Save is now primary (filled)
- SessionPage: saved queries header row fully tappable (not just chevron)
- SessionPage: QueryEditor BackgroundColor/TextColor use DynamicResource for live theme switching
- LightTheme: add Editor style so colors reset correctly when switching dark→light

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.Android/MainActivity.cs

@@ -32,9 +32,14 @@ namespace Xamarin.Neo4j.Android
                 var nightMode = Resources.Configuration.UiMode & UiMode.NightMask;
                 var isDark = nightMode == UiMode.NightYes;
 
-                // Status bar icon appearance: dark icons on light bg, white icons on dark bg
+                // Status bar: match page background, icons contrast with it
                 if (Window != null)
                 {
+                    var statusBarColor = isDark
+                        ? AColor.ParseColor("#0c0c0c")
+                        : AColor.ParseColor("#f5f5f5");
+                    Window.SetStatusBarColor(statusBarColor);
+
                     var controller = new WindowInsetsControllerCompat(Window, Window.DecorView);
                     controller.AppearanceLightStatusBars = !isDark;
                 }

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.Android/Resources/values-night/colors.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="windowBackground">#0c0c0c</color>
+    <color name="statusBarColor">#0c0c0c</color>
+</resources>

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.Android/Resources/values/colors.xml

@@ -5,4 +5,6 @@
     <color name="colorPrimaryDark">#0c0c0c</color>
     <color name="colorAccent">#e2e2e2</color>
     <color name="navBar">#141414</color>
+    <color name="windowBackground">#f5f5f5</color>
+    <color name="statusBarColor">#f5f5f5</color>
 </resources>

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.Android/Resources/values/styles.xml

@@ -19,6 +19,9 @@
         <item name="colorAccent">@color/colorAccent</item>
         <!-- colorOnPrimary controls text/icon color on primary-colored surfaces (toolbar, overflow icon) -->
         <item name="colorOnPrimary">#ffffff</item>
+        <!-- windowBackground prevents white flash during page transitions -->
+        <item name="android:windowBackground">@color/windowBackground</item>
+        <item name="android:statusBarColor">@color/statusBarColor</item>
         <item name="actionModeBackground">@color/colorPrimary</item>
         <item name="actionOverflowButtonStyle">@style/OverflowMenuButton</item>
         <item name="actionModeStyle">@style/ActionModeStyle</item>

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Pages/AddConnectionPage.xaml

@@ -51,9 +51,9 @@
                    </Grid>
                </StackLayout>
 
-               <Button Text="Connect" BackgroundColor="{DynamicResource Accent}" TextColor="{DynamicResource QueryTextBackground}" Command="{Binding Commands[Connect]}" />
-               <Button Text="Test" BackgroundColor="Transparent" TextColor="{DynamicResource Accent}" BorderColor="{DynamicResource Accent}" BorderWidth="1" Command="{Binding Commands[Test]}" />
-               <Button Text="Save" BackgroundColor="Transparent" TextColor="{DynamicResource PrimaryTextColor}" BorderColor="{DynamicResource SecondaryTextColor}" BorderWidth="1" Command="{Binding Commands[Save]}" />
+               <Button Text="Test" BackgroundColor="Transparent" TextColor="{DynamicResource SecondaryTextColor}" BorderColor="{DynamicResource SecondaryTextColor}" BorderWidth="1" Command="{Binding Commands[Test]}" />
+               <Button Text="Connect" BackgroundColor="Transparent" TextColor="{DynamicResource PrimaryTextColor}" BorderColor="{DynamicResource PrimaryTextColor}" BorderWidth="1" Command="{Binding Commands[Connect]}" />
+               <Button Text="Save" BackgroundColor="{DynamicResource Accent}" TextColor="{DynamicResource QueryTextBackground}" Command="{Binding Commands[Save]}" />
            </StackLayout>
        </ScrollView>
     </ContentPage.Content>

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Pages/SessionPage.xaml

@@ -49,6 +49,8 @@
                 <controls:QueryEditor Text="{Binding Query}" ExecuteClicked="ExecuteQuery"
                                      Placeholder="MATCH (n) RETURN n LIMIT 25"
                                      PlaceholderColor="{DynamicResource SecondaryTextColor}"
+                                     BackgroundColor="{DynamicResource QueryTextBackground}"
+                                     TextColor="{DynamicResource PrimaryTextColor}"
                                      FontSize="14" MaxHeight="200" HorizontalOptions="FillAndExpand" AutoSize="TextChanges" />
             </Border>
 
@@ -57,20 +59,21 @@
                 <StackLayout Spacing="0" Padding="0,0,0,16">
 
                     <!-- Saved queries section — collapsible, always above results -->
-                    <Grid ColumnDefinitions="*,Auto" Padding="16,10,4,4">
+                    <Grid ColumnDefinitions="*,Auto" Padding="16,10,16,4">
+                        <Grid.GestureRecognizers>
+                            <TapGestureRecognizer Tapped="ToggleSavedQueries" />
+                        </Grid.GestureRecognizers>
                         <Label Grid.Column="0"
                                Text="Saved Queries"
                                FontSize="12" FontAttributes="Bold"
                                TextColor="{DynamicResource SecondaryTextColor}"
                                VerticalOptions="Center" />
-                        <Button Grid.Column="1"
-                                x:Name="savedQueriesChevron"
-                                Text="{x:Static fonts:FontAwesomeSolid.ChevronUp}"
-                                FontFamily="{StaticResource FontAwesomeSolid}" FontSize="11"
-                                BackgroundColor="Transparent"
-                                TextColor="{DynamicResource SecondaryTextColor}"
-                                WidthRequest="40" HeightRequest="32"
-                                Clicked="ToggleSavedQueries" />
+                        <Label Grid.Column="1"
+                               x:Name="savedQueriesChevron"
+                               Text="{x:Static fonts:FontAwesomeSolid.ChevronUp}"
+                               FontFamily="{StaticResource FontAwesomeSolid}" FontSize="11"
+                               TextColor="{DynamicResource SecondaryTextColor}"
+                               VerticalOptions="Center" />
                     </Grid>
 
                     <StackLayout x:Name="savedQueriesContent" Spacing="0" Margin="16,0">

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Themes/LightTheme.xaml

@@ -41,6 +41,11 @@
         <Setter Property="BarTextColor" Value="#e2e2e2" />
     </Style>
 
+    <Style TargetType="Editor" ApplyToDerivedTypes="True">
+        <Setter Property="BackgroundColor" Value="#ffffff"/>
+        <Setter Property="TextColor" Value="#0c0c0c"/>
+    </Style>
+
     <Style TargetType="TabbedPage" ApplyToDerivedTypes="True">
         <Setter Property="BackgroundColor" Value="#ffffff"/>
         <Setter Property="BarTextColor" Value="#868a92"/>