Update app.js

app.js

@@ -1212,6 +1212,21 @@ on('auth-toggle-mode', 'click', () => {
   if (authToggleMode) authToggleMode.textContent = isAuthRegister ? "Already have an account? Sign In" : "Need an account? Register";
 });
 
+// Google Auth
+on('auth-google-btn', 'click', async () => {
+  if (!auth) return;
+  try {
+    const provider = new firebase.auth.GoogleAuthProvider();
+    await auth.signInWithPopup(provider);
+    if (authModal) authModal.classList.add('hidden');
+  } catch (err) {
+    if (authError) {
+      authError.textContent = err.message.replace("Firebase: ", "");
+      authError.classList.remove('hidden');
+    }
+  }
+});
+
 on('auth-submit-btn', 'click', async () => {
   if (!auth) return;
   const email = authEmail.value.trim(), pass = authPassword.value.trim();
@@ -1224,9 +1239,22 @@ on('auth-submit-btn', 'click', async () => {
     return;
   }
   try {
-    if (isAuthRegister) await auth.createUserWithEmailAndPassword(email, pass);
-    else await auth.signInWithEmailAndPassword(email, pass);
-    if (authModal) authModal.classList.add('hidden');
+    if (isAuthRegister) {
+      // Create account & dispatch verification link
+      const cred = await auth.createUserWithEmailAndPassword(email, pass);
+      await cred.user.sendEmailVerification();
+      await auth.signOut(); // Kick out until verified
+      alert("Verification email sent! Click the link in your inbox before logging in.");
+      if (authModal) authModal.classList.add('hidden');
+    } else {
+      // Sign in & check verification status
+      const cred = await auth.signInWithEmailAndPassword(email, pass);
+      if (!cred.user.emailVerified) {
+        await auth.signOut();
+        throw new Error("Please verify your email address first. Check your inbox or spam folder.");
+      }
+      if (authModal) authModal.classList.add('hidden');
+    }
   } catch (err) {
     if (authError) {
       authError.textContent = err.message.replace("Firebase: ", "");