diff --git a/scss/linux/_menu.scss b/scss/linux/_menu.scss
new file mode 100644
index 0000000000..668ffa0e0c
--- /dev/null
+++ b/scss/linux/_menu.scss
@@ -0,0 +1,13 @@
+@each $cls, $icon in $menu-icons {
+	.zotero-menuitem-#{$cls} {
+		// If icon starts with "light-dark:", use light and dark icon
+		@if str-slice($icon, 0, 11) == "light-dark:" {
+			@include focus-states using ($color) {
+				@include svgicon-menu(str-slice($icon, 12), $color, "16");
+			}
+		}
+		@else {
+			@include svgicon-menu($icon, "universal", "16", false, false, false);
+		}
+	}
+};
diff --git a/scss/linux/_menupopup.scss b/scss/linux/_menupopup.scss
index dad0774f40..e35b7111b8 100644
--- a/scss/linux/_menupopup.scss
+++ b/scss/linux/_menupopup.scss
@@ -1,10 +1,7 @@
 menupopup, panel, #search-mode-popup {
-	--panel-padding-block: 0;
-	--panel-border-radius: 6px;
-	--panel-background: var(--material-toolbar);
-	--menuitem-hover-background-color: var(--fill-quinary);
-	--menuitem-disabled-hover-background-color: var(--fill-quinary);
-	@include light-dark(--panel-border-color, #dddddd, #1c1c1c);
+	--panel-padding-block: initial;
+	--panel-border-color: initial;
+	--panel-border-radius: 3px;
 }
 
 menupopup {
@@ -16,5 +13,5 @@ menupopup {
 }
 
 :is(panel, menupopup)::part(content) {
-	padding: 6px 0px 6px 0px;
+	padding: 3px 0;
 }
diff --git a/scss/linux/_titleBar.scss b/scss/linux/_titleBar.scss
index 9f9fcb0cd7..3ef9a37263 100644
--- a/scss/linux/_titleBar.scss
+++ b/scss/linux/_titleBar.scss
@@ -15,6 +15,10 @@
 	-moz-appearance: -moz-window-titlebar;
 }
 
+#zotero-title-bar {
+	border-top: 1px solid var(--toolbar-field-border-color);
+}
+
 #toolbar-menubar {
 	pointer-events: none;
 	visibility: visible;
diff --git a/scss/zotero-unix.scss b/scss/zotero-unix.scss
index c403463a3e..2969579acd 100644
--- a/scss/zotero-unix.scss
+++ b/scss/zotero-unix.scss
@@ -8,6 +8,7 @@
 @import "linux/editable";
 @import "linux/errorReport";
 @import "linux/feedSettings";
+@import "linux/menu";
 @import "linux/menupopup";
 @import "linux/tabBar";
 @import "linux/titleBar";