Merge nucleic/keen-willow-panda-3uc2 into main

Mirrored from corpo f21be6c.

src/pages/index.astro

@@ -823,6 +823,7 @@ const canonical = new URL('/', Astro.site);
   .footer {
     padding-top: 1rem;
     border-top: 1px solid var(--line);
+    transition: opacity 350ms ease-out;
   }
 
   /* The stack is the journey to the site's closing information. Enhancement adds
@@ -833,10 +834,6 @@ const canonical = new URL('/', Astro.site);
     pointer-events: none;
   }
 
-  .footer.is-footer-revealed {
-    animation: fade-in 500ms ease-out forwards;
-  }
-
   .footer p {
     margin: 0;
   }
@@ -872,11 +869,6 @@ const canonical = new URL('/', Astro.site);
     }
   }
 
-  @keyframes fade-in {
-    from { opacity: 0; }
-    to { opacity: 1; }
-  }
-
   @keyframes fade-up {
     from {
       transform: translate3d(0, 1rem, 0);
@@ -1231,16 +1223,16 @@ const canonical = new URL('/', Astro.site);
       { passive: true },
     );
 
-    let footerRevealed = false;
+    const setFooterVisible = (isVisible: boolean) => {
+      if (!footer) return;
 
-    const revealFooter = () => {
-      if (!footer || footerRevealed) return;
-
-      footerRevealed = true;
-      footer.classList.remove('is-awaiting-final-card');
-      footer.classList.add('is-footer-revealed');
-      footer.removeAttribute('aria-hidden');
-      footer.removeAttribute('inert');
+      footer.classList.toggle('is-awaiting-final-card', !isVisible);
+      footer.toggleAttribute('inert', !isVisible);
+      if (isVisible) {
+        footer.removeAttribute('aria-hidden');
+      } else {
+        footer.setAttribute('aria-hidden', 'true');
+      }
     };
 
     const activateTechnology = (index: number) => {
@@ -1252,7 +1244,7 @@ const canonical = new URL('/', Astro.site);
       });
 
       if (progressCurrent) progressCurrent.textContent = String(index + 1).padStart(2, '0');
-      if (index === cards.length - 1) revealFooter();
+      setFooterVisible(index === cards.length - 1);
     };
 
     activateTechnology(0);