Update style.css

style.css

@@ -11,6 +11,40 @@ body {
   flex-direction: column;
 }
 
+/* Auth container */
+#auth-container {
+  background: white;
+  border-radius: 12px;
+  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
+  padding: 40px 30px;
+  text-align: center;
+  width: 320px;
+}
+
+#auth-container h2 {
+  margin-bottom: 10px;
+}
+
+#auth-container p {
+  color: #555;
+  margin-bottom: 20px;
+}
+
+#sign-in {
+  padding: 10px 20px;
+  background: #007bff;
+  border: none;
+  border-radius: 8px;
+  color: white;
+  cursor: pointer;
+  transition: 0.3s;
+  font-size: 15px;
+}
+
+#sign-in:hover {
+  background: #0056b3;
+}
+
 /* Chat container */
 #chat-container {
   width: 80%;