fix: Fix layout shifting with Copyright Component

src/App.jsx

@@ -57,7 +57,7 @@ function App() {
           )}
         </IconsContext.Provider>
       </div>
-      <Copyright isLoginPage={location.pathname === '/login'} />
+      <Copyright isLoginPage={location.pathname === '/login'} isLoggedIn={isLoggedIn} onLogin={handleLogin} />
     </div>
   );
 }

src/components/UI/Copyright.jsx

@@ -1,7 +1,7 @@
 // Copyright.jsx
 import React, { useState, useEffect } from "react";
 
-export default function Copyright({ isLoginPage }) {
+export default function Copyright({ isLoginPage, isLoggedIn }) {
   const [isCentered, setIsCentered] = useState(true);
 
   useEffect(() => {
@@ -17,16 +17,21 @@ export default function Copyright({ isLoginPage }) {
     }
   }, [isLoginPage]);
 
+  // Show copyright on login page with transition, or at bottom after login
+  if (!isLoginPage && !isLoggedIn) {
+    return null;
+  }
+
   return (
     <div
       style={{
         textAlign: "center",
         marginTop: "1rem",
         transition: "all 0.8s ease-in-out",
-        position: "fixed",
+        position: isLoginPage ? "fixed" : "relative",
-        top: isCentered ? "65%" : "90%",
+        top: isLoginPage ? (isCentered ? "65%" : "90%") : "auto",
-        left: "50%",
+        left: isLoginPage ? "50%" : "auto",
-        transform: "translate(-50%, -50%)",
+        transform: isLoginPage ? "translate(-50%, -50%)" : "none"
       }}
     >
       <p>