Clean up footer with More Platforms menu

src/App.tsx

@@ -433,6 +433,9 @@ function SiteFooter({ content }: { content: SiteContent }) {
   const amazonUrl = content.platformAmazonUrl || '/amazon'
   const creatorUrl = content.platformCreatorUrl || 'https://creators.spotify.com/pod/profile/nmemmert/'
   const facebookUrl = content.platformFacebookUrl || 'https://facebook.com/versebyversewithnate'
+  const extraFooterLinks = (content.customLinks ?? []).filter(
+    l => l.placement === 'footer' || l.placement === 'platforms',
+  )
 
   return (
     <footer className="site-footer">
@@ -457,10 +460,19 @@ function SiteFooter({ content }: { content: SiteContent }) {
         <a href={creatorUrl} target="_blank" rel="noreferrer">Creator Profile</a>
         <span aria-hidden="true">·</span>
         <a href={facebookUrl} target="_blank" rel="noreferrer">Facebook</a>
-        {(content.customLinks ?? []).filter(l => l.placement === 'footer').flatMap(l => [
-          <span key={`sep-${l.id}`} aria-hidden="true">·</span>,
-          <a key={l.id} href={l.url} target="_blank" rel="noreferrer">{l.label}</a>,
-        ])}
+        {extraFooterLinks.length > 0 && (
+          <>
+            <span aria-hidden="true">·</span>
+            <details className="footer-more-links">
+              <summary>More Platforms</summary>
+              <div className="footer-more-links-menu">
+                {extraFooterLinks.map(link => (
+                  <a key={link.id} href={link.url} target="_blank" rel="noreferrer">{link.label}</a>
+                ))}
+              </div>
+            </details>
+          </>
+        )}
       </nav>
       <nav className="footer-links footer-links--legal" aria-label="Legal links">
         <Link to="/privacy">Privacy Policy</Link>