diff --git a/apps/web/src/styles/chat.css b/apps/web/src/styles/chat.css
index 7fdb1a41e..b36225e45 100644
--- a/apps/web/src/styles/chat.css
+++ b/apps/web/src/styles/chat.css
@@ -480,6 +480,7 @@
   display: flex;
   flex-direction: column;
   gap: 6px;
+  max-height: min(420px, calc(100vh - 180px));
   transition: border-color 120ms ease, box-shadow 120ms ease;
 }
 .composer-shell:focus-within {