diff --git a/src/main.js b/src/main.js
index 729fdc8..d45d4d1 100644
--- a/src/main.js
+++ b/src/main.js
@@ -15,13 +15,18 @@ const logtoClient = new LogtoClient({
 });
 
 async function protectPage() {
-  const isCallback = window.location.pathname.includes('callback');
+  const urlParams = new URLSearchParams(window.location.search);
+  const isCallback = urlParams.has('code') && urlParams.has('state');
   
+  const exactRedirectUri = window.location.origin + '/';
+
   if (isCallback) {
     try {
-      await logtoClient.handleSignInCallback(window.location.href);
+      await logtoClient.handleSignInCallback(exactRedirectUri);
       window.location.assign('/'); 
     } catch (error) {
+      style.remove();
+      document.body.innerHTML = `<div style="padding: 20px; color: red;"><h1>Erro de Autenticação Logto</h1><p>${error.message}</p></div>`;
       console.error('Falha no callback do Logto:', error);
     }
     return;
@@ -29,7 +34,7 @@ async function protectPage() {
 
   const isAuthenticated = await logtoClient.isAuthenticated();
   if (!isAuthenticated) {
-    await logtoClient.signIn(window.location.origin);
+    await logtoClient.signIn(exactRedirectUri);
     return;
   }