Theme fixes

app/src/main/kotlin/org/koitharu/kotatsu/sync/data/SyncSettings.kt

@@ -18,9 +18,9 @@ class SyncSettings(
 	@Inject
 	constructor(@ApplicationContext context: Context) : this(
 		context,
-		AccountManager.get(context)
-			.getAccountsByType(context.getString(R.string.account_type_sync))
-			.firstOrNull(),
+		AccountManager.get(context)?.getAccountsByType(
+			context.getString(R.string.account_type_sync),
+		)?.firstOrNull(),
 	)
 
 	private val accountManager = AccountManager.get(context)

app/src/main/res/layout-w600dp-land/activity_main.xml

@@ -36,10 +36,13 @@
 			android:id="@+id/appbar"
 			android:layout_width="match_parent"
 			android:layout_height="wrap_content"
+			android:background="@null"
 			android:clipToPadding="false"
+			android:elevation="0dp"
 			android:fitsSystemWindows="false"
 			android:paddingHorizontal="@dimen/margin_normal"
 			android:stateListAnimator="@null"
+			app:elevation="0dp"
 			app:liftOnScroll="false"
 			app:liftOnScrollColor="@null">
 
@@ -65,6 +68,7 @@
 					android:layout_width="match_parent"
 					android:layout_height="wrap_content"
 					android:layout_marginEnd="6dp"
+					android:background="@null"
 					android:focusable="true"
 					android:focusableInTouchMode="true"
 					app:contentInsetStartWithNavigation="0dp"

app/src/main/res/layout/activity_main.xml

@@ -18,10 +18,13 @@
 		android:id="@+id/appbar"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
+		android:background="@null"
 		android:clipToPadding="false"
+		android:elevation="0dp"
 		android:fitsSystemWindows="false"
 		android:paddingHorizontal="@dimen/margin_normal"
 		android:stateListAnimator="@null"
+		app:elevation="0dp"
 		app:liftOnScroll="false"
 		app:liftOnScrollColor="@null">
 
@@ -48,6 +51,7 @@
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:layout_marginEnd="6dp"
+				android:background="@null"
 				android:focusable="true"
 				android:focusableInTouchMode="true"
 				app:collapseIcon="@null"

app/src/main/res/layout/fragment_favourites_container.xml

@@ -11,6 +11,7 @@
 		android:id="@+id/tabs"
 		android:layout_width="match_parent"
 		android:layout_height="wrap_content"
+		android:background="@null"
 		app:tabGravity="start"
 		app:tabMode="scrollable" />