Add Google Login

public/login.html

@@ -27,6 +27,23 @@
         <!-- Login Form -->
         <div id="loginForm" class="form-container active">
             <h2 style="text-align: center; margin-bottom: 1.5rem; color: #e2e8f0; font-weight: 600;">Welcome Back</h2>
+            <!-- Google OAuth Button -->
+            <div class="oauth-container">
+                <button type="button" id="googleSignInBtn" class="btn btn-google">
+                    <svg width="20" height="20" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+                        <path fill="#4285F4" d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"/>
+                        <path fill="#34A853" d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"/>
+                        <path fill="#FBBC05" d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"/>
+                        <path fill="#EA4335" d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"/>
+                    </svg>
+                    Continue with Google
+                </button>
+            </div>
+            
+            <div class="divider">
+                <span>or</span>
+            </div>
+            
             <form id="loginFormElement">
                 <div class="form-group">
                     <label for="loginEmail">Email</label>