fix: strip existing sso param from clientUrl, add aria roles to dropdowns, add x-pathname fallback, move .dropdown-menu into @layer components

src/app/globals.css

@@ -146,6 +146,28 @@ body {
     background-color: color-mix(in srgb, var(--color-primary) 12%, transparent);
     color: var(--color-primary);
   }
+  .dropdown-menu {
+    background-color: var(--color-dropdown);
+    border: 1px solid color-mix(in srgb, var(--color-text-muted) 14%, transparent);
+    box-shadow: 0 8px 32px color-mix(in srgb, rgb(0, 0, 0) 20%, transparent);
+    transform-origin: top right;
+    transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1),
+                transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
+    opacity: 0;
+    transform: translateY(-8px) scale(0.95);
+    pointer-events: none;
+  }
+  details[open] > .dropdown-menu {
+    opacity: 1;
+    transform: translateY(0) scale(1);
+    pointer-events: auto;
+  }
+  @starting-style {
+    details[open] > .dropdown-menu {
+      opacity: 0;
+      transform: translateY(-8px) scale(0.95);
+    }
+  }
 }
 
 /* ── Atom icons / backgrounds (asset paths adapted to /assets) ── */
@@ -723,32 +745,6 @@ tbody tr:hover {
   border-color: #f97316;
 }
 
-/* ── Dropdown menu (solid color + animation) ─────────────────── */
-.dropdown-menu {
-  background-color: var(--color-dropdown);
-  border: 1px solid color-mix(in srgb, var(--color-text-muted) 14%, transparent);
-  box-shadow: 0 8px 32px color-mix(in srgb, rgb(0, 0, 0) 20%, transparent);
-  transform-origin: top right;
-  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1),
-              transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
-  opacity: 0;
-  transform: translateY(-8px) scale(0.95);
-  pointer-events: none;
-}
-
-details[open] > .dropdown-menu {
-  opacity: 1;
-  transform: translateY(0) scale(1);
-  pointer-events: auto;
-}
-
-@starting-style {
-  details[open] > .dropdown-menu {
-    opacity: 0;
-    transform: translateY(-8px) scale(0.95);
-  }
-}
-
 /* ── Radio sidebar ──────────────────────────────────────────── */
 .radio-layout {
   display: flex;