style(firefox): finalize autohide toolbox for web-app profile

Successfully autohides both Tabs and Nav-bar using MrOtherGuy's strategy with a fixed trigger zone.

apps/firefox/profiles/web-app.nix

@@ -70,54 +70,104 @@
   };
 
   userChrome = ''
-    /* --- Floating Autohide Toolbox (Tabs + Address Bar) --- */
+    /* --- Autohide Entire Toolbox (Tabs + Address Bar) --- */
+    /* Adapted from MrOtherGuy's autohide_main_toolbar.css */
 
-    :root {
+    :root{
-      --toolbox-transition-duration: 0.2s;
+      /* Height of Tabs + Nav Bar approx 80px */
-      --toolbox-transition-timing-function: ease;
+      --uc-navbar-transform: -85px; 
+      --uc-autohide-toolbar-delay: 0.1s;
+      --uc-autohide-toolbar-duration: 200ms;
     }
+    :root[uidensity="compact"]{ --uc-navbar-transform: -70px }
 
-    #navigator-toolbox {
+    #navigator-toolbox > div{ display: contents; }
-      position: fixed !important;
+    
-      top: 0;
+    /* Apply transform to TabsToolbar AND Nav-bar */
-      left: 0;
+    :root[sessionrestored] :where(#nav-bar,#PersonalToolbar,#TabsToolbar,#tab-notification-deck,.global-notificationbox,#notifications-toolbar){
-      width: 100%;
+      transform: translateY(var(--uc-navbar-transform))
-      z-index: 9999 !important;
-      transition: transform var(--toolbox-transition-duration) var(--toolbox-transition-timing-function) !important;
-      transform: translateY(-100%) !important;
-      opacity: 0 !important;
     }
-
+    
-    /* Reveal on hover */
+    :root:is([customizing],[chromehidden*="toolbar"]) :where(#nav-bar,#PersonalToolbar,#TabsToolbar,#tab-notification-deck,.global-notificationbox,#notifications-toolbar){
-    #navigator-toolbox:hover,
+      transform: none !important;
-    #navigator-toolbox:focus-within {
-      transform: translateY(0) !important;
       opacity: 1 !important;
     }
 
-    /* Trigger zone at top of screen */
+    /* Hide styles for Nav-Bar AND TabsToolbar */
+    :where(#nav-bar,#TabsToolbar):not([customizing]){
+      opacity: 0;
+      transition:  transform var(--uc-autohide-toolbar-duration) ease var(--uc-autohide-toolbar-delay), opacity var(--uc-autohide-toolbar-duration) ease var(--uc-autohide-toolbar-delay) !important;
+      position: relative;
+      z-index: 2;
+    }
+
+    #navigator-toolbox,
+    #sidebar-box,
+    #sidebar-main,
+    #sidebar-splitter,
+    #tabbrowser-tabbox{
+      z-index: auto !important;
+    }
+
+    /* Show when toolbox is focused or hovered */
+    #navigator-toolbox:focus-within > .browser-toolbar,
+    .browser-titlebar:hover ~ :is(#nav-bar,#PersonalToolbar,#TabsToolbar),
+    #nav-bar:hover,
+    #TabsToolbar:hover,
+    #nav-bar:hover + #PersonalToolbar{
+      transform: translateY(0);
+      opacity: 1;
+      transition-duration: var(--uc-autohide-toolbar-duration), var(--uc-autohide-toolbar-duration) !important;
+      transition-delay: 0s !important;
+    }
+
+    /* Ensure popups still work (URL bar) */
+    :root[sessionrestored] #urlbar[popover]{
+      opacity: 0;
+      pointer-events: none;
+      transition: transform var(--uc-autohide-toolbar-duration) ease var(--uc-autohide-toolbar-delay), opacity var(--uc-autohide-toolbar-duration) ease var(--uc-autohide-toolbar-delay);
+      transform: translateY(var(--uc-navbar-transform));
+    }
+    #mainPopupSet:has(> [panelopen]:not(#ask-chat-shortcuts,#selection-shortcut-action-panel,#chat-shortcuts-options-panel,#tab-preview-panel)) ~ toolbox #urlbar[popover],
+    .browser-titlebar:is(:hover,:focus-within) ~ #nav-bar #urlbar[popover],
+    #nav-bar:is(:hover,:focus-within) #urlbar[popover],
+    #urlbar-container > #urlbar[popover]:is([focused],[open]){
+      opacity: 1;
+      pointer-events: auto;
+      transition-delay: 0ms;
+      transform: translateY(0);
+    }
+    :where(:root[sessionrestored]) #urlbar-container > #urlbar[popover]:is([focused],[open]){
+     transition-duration: 100ms;
+    }
+
+    /* --- CRITICAL FIX: Trigger Zone --- */
+    /* Since we hide EVERYTHING, we need a hitbox at the top of the screen */
     #navigator-toolbox::after {
       content: "";
-      position: absolute;
+      position: fixed;
-      top: 100%; /* Below the hidden toolbox */
+      top: 0;
       left: 0;
       width: 100%;
-      height: 5px; /* Size of the trigger area */
+      height: 20px; /* Generous hit target */
-      z-index: 10000 !important;
+      z-index: 10000;
+      pointer-events: auto;
+    }
+    
+    /* When hitbox is hovered, reveal bars */
+    #navigator-toolbox:hover :where(#nav-bar,#PersonalToolbar,#TabsToolbar) {
+      transform: translateY(0) !important;
+      opacity: 1 !important;
+      transition-delay: 0s !important;
     }
 
-    /* Remove native titlebar so it doesn't mess up height */
+    /* Move up the content view to fill the gap */
-    #titlebar {
+    :root[sessionrestored]:not([chromehidden~="toolbar"]) > body > #browser{
-      appearance: none !important;
+      margin-top: var(--uc-navbar-transform);
-      margin-bottom: -10px !important; /* Pull things up if needed */
     }
 
-    /* Ensure content starts at top of screen */
+    /* Fix Titlebar and Bookmarks */
-    #browser, #appcontent, tabbrowser, #tab-notification-deck {
+    #titlebar { appearance: none !important; }
-      margin-top: 0 !important;
-    }
-
-    /* Hide Bookmarks Toolbar permanently */
     #PersonalToolbar { visibility: collapse !important; }
   '';
 }