--- before/app/BookButton.js	2026-10-24 09:08:13.385388991 -0400
+++ after/app/BookButton.js	2026-10-24 09:08:28.789388991 -0400
@@ -5,7 +5,7 @@
   const [link, setLink] = useState("");
   return (
     <div>
-      <button onClick={() => setLink(process.env.BOOKING_URL + "/book")}>Book a call</button>
+      <button onClick={() => setLink(process.env.NEXT_PUBLIC_BOOKING_URL + "/book")}>Book a call</button>
       <p id="link">{link}</p>
     </div>
   );