Increase OpenAlex to Google Scholar badge gap

Add a Google Scholar badge class and CSS variable for spacing after OpenAlex.

Author: systemreliability

_layouts/bib.liquid

@@ -347,6 +347,7 @@
           {% endif %}
           {% if site.enable_publication_badges.google_scholar and entry_has_google_scholar_badge %}
             <a
+              class="google-scholar-badge"
               href="https://scholar.google.com/citations?view_op=view_citation&hl=en&user={{ site.scholar_userid }}&citation_for_view={{ site.scholar_userid }}:{{ entry.google_scholar_id }}"
               aria-label="Google Scholar link"
               role="button"

_sass/_publication-badges.scss

@@ -9,6 +9,7 @@
         --publication-badge-gap: 0.1rem;
         --dimensions-badge-scale: 0.92;
         --dimensions-badge-offset-y: 1px;
+        --openalex-scholar-gap: 0.35rem;
 
         align-items: center;
         gap: var(--publication-badge-gap);
@@ -27,6 +28,10 @@
             vertical-align: middle;
           }
         }
+
+        .openalex-badge + .google-scholar-badge {
+          margin-left: var(--openalex-scholar-gap);
+        }
       }
     }
   }