Create separate hide tabs toolbar file for osx

chrome/hide_tabs_toolbar.css

@@ -1,7 +1,8 @@
 /* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/hide_tabs_toolbar.css made available under Mozilla Public License v. 2.0
 See the above repository for updates as well as full license text. */
 
-/* Hide tabs toolbar Fx65+ */
+/* Hides tabs toolbar */
+/* For OSX use hide_tabs_toolbar_osx.css instead */
 
 /* IMPORTANT */
 /*

chrome/hide_tabs_toolbar_osx.css

@@ -0,0 +1,25 @@
+/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/hide_tabs_toolbar_osx.css made available under Mozilla Public License v. 2.0
+See the above repository for updates as well as full license text. */
+
+/* Hides tabs toolbar - OSX only */
+
+/* IMPORTANT */
+/*
+Get window_control_placeholder_support.css
+Window controls will be all wrong without it
+*/
+
+:root{ --uc-toolbar-height: 32px; }
+
+:root:not([uidensity="compact"]){ --uc-toolbar-height: 38px }
+
+#TabsToolbar > *{ visibility: collapse !important }
+
+#TabsToolbar > .titlebar-buttonbox-container{
+  visibility: visible !important;
+  height:var(--uc-toolbar-height) !important;
+}
+
+:root:not([inFullscreen]) #nav-bar{
+  margin-top: calc(0px - var(--uc-toolbar-height));
+}

html_resources/tagmap.json

@@ -94,5 +94,6 @@
 "vertical_context_navigation.css":["navigation","menu","popup"],
 "vertical_context_navigation_v2.css":["navigation","menu","popup"],
 "vertical_menubar.css":["menubar","hack"],
-"window_control_placeholder_support.css":["window-control","patch"]
+"window_control_placeholder_support.css":["window-control","patch"],
+"hide_tabs_toolbar_osx.css":["tabs","toolbars","hiding","minimal"]
 }

tags.csv

@@ -94,3 +94,4 @@ vertical_context_navigation.css,navigation,menu,popup
 vertical_context_navigation_v2.css,navigation,menu,popup
 vertical_menubar.css,menubar,hack
 window_control_placeholder_support.css,window-control,patch
+hide_tabs_toolbar_osx.css,tabs,toolbars,hiding,minimal