diff --git a/index.php b/index.php
index 746ac60..3361058 100644
--- a/index.php
+++ b/index.php
@@ -64,6 +64,10 @@
             transition: all 0.5s ease;
         }
 
+        .chat-container.sidebar-active {
+            max-width: 1200px;
+        }
+
         .quick-actions-sidebar {
             width: 0;
             overflow: hidden;