Keep the collapsed docs options bar transparent and its focus ring keyboard-only

- reset background/border/shadow on :not(.is-open) so hover/focus cannot leak the panel look
- return focus to the button only on Escape close, not on outside-click

modules/docs/src/Volo.Docs.Web/Pages/Documents/Shared/Scripts/vs.js

@@ -186,10 +186,6 @@
         function setOpen(isOpen) {
             $criteria.toggleClass('is-open', isOpen);
             $btn.attr('aria-expanded', isOpen ? 'true' : 'false');
-            // on close, pull focus out of the now-hidden popover back to the button
-            if (!isOpen && $.contains($criteria[0], document.activeElement)) {
-                $btn.trigger('focus');
-            }
         }
         // clear any previous bindings so a second init (e.g. partial reload) does not stack handlers
         $btn.off('.docsOptions');
@@ -208,8 +204,10 @@
             setOpen(false);
         });
         $(document).on('keydown.docsOptions', function (e) {
-            if (e.key === 'Escape') {
+            if (e.key === 'Escape' && $criteria.hasClass('is-open')) {
                 setOpen(false);
+                // keyboard close: return focus to the button (focus ring is appropriate here)
+                $btn.trigger('focus');
             }
         });
         $(window).on('scroll.docsOptions', function () {

modules/docs/src/Volo.Docs.Web/Pages/Documents/Shared/Styles/vs.css

@@ -139,6 +139,11 @@ body.scrolledMore .alert-criteria.is-open .options-header .toggle-btn::before {
   content: "\f00d";
   font-size: 22px;
 }
+body.scrolledMore .alert-criteria:not(.is-open), body.scrolledMore .alert-criteria:not(.is-open):hover, body.scrolledMore .alert-criteria:not(.is-open):focus-within {
+  background: transparent !important;
+  border: 0 !important;
+  box-shadow: none !important;
+}
 body.scrolledMore .alert-criteria p.alert-p {
   margin: 0 0 12px !important;
   color: #6f42c1 !important;

modules/docs/src/Volo.Docs.Web/Pages/Documents/Shared/Styles/vs.scss

@@ -180,6 +180,16 @@ body {
                 }
             }
 
+            // defensive: the collapsed state must never pick up the opened panel's background/
+            // border/shadow (e.g. from a :hover / :focus-within rule leaking in) — only the FAB shows
+            &:not(.is-open),
+            &:not(.is-open):hover,
+            &:not(.is-open):focus-within {
+                background: transparent !important;
+                border: 0 !important;
+                box-shadow: none !important;
+            }
+
             p.alert-p {
                 margin: 0 0 12px !important;
                 color: #6f42c1 !important;