fix(nav): finish top-bar icon/text baseline alignment

Center toggle/badge FA icons, normalize CTA icon+label without raw spaces, and extend .but FA5 margin so navbar text/icons match zibll.

assets/css/frontend/nav.css

@@ -149,3 +149,58 @@
   display: flex;
   align-items: center;
 }
+
+/* Dropdown / user-href circular icon badges (zibll header-user-href) */
+.navbar-top .header-user-href .toggle-radius,
+.navbar-top .badg.toggle-radius {
+  position: relative;
+  display: inline-block;
+  text-align: center;
+  vertical-align: middle;
+  overflow: hidden;
+}
+.navbar-top .header-user-href .toggle-radius > i,
+.navbar-top .header-user-href .toggle-radius .fa,
+.navbar-top .header-user-href .toggle-radius .fas,
+.navbar-top .badg.toggle-radius > i,
+.navbar-top .badg.toggle-radius .fa,
+.navbar-top .badg.toggle-radius .fas {
+  position: absolute !important;
+  top: 50% !important;
+  left: 0 !important;
+  right: 0 !important;
+  margin: auto !important;
+  transform: translateY(-50%) !important;
+  line-height: 1 !important;
+  width: 1em;
+  height: 1em;
+  display: inline-flex !important;
+  align-items: center;
+  justify-content: center;
+}
+
+/* Kill FA vertical-align drift inside flex chips */
+.navbar-top a.btn > i.fas,
+.navbar-top a.btn > i.far,
+.navbar-top a.navbar-cta > i.fas,
+.navbar-top a.navbar-cta > i.far,
+.navbar-top .toggle-theme > i.fas {
+  vertical-align: 0 !important;
+}
+
+/* Navbar form row height consistency */
+.navbar-top .navbar-form.flex.ac {
+  min-height: 36px;
+}
+.navbar-top .list-inline {
+  display: flex;
+  align-items: center;
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+.navbar-top .list-inline > li {
+  display: flex;
+  align-items: center;
+  vertical-align: middle;
+}