diff --git a/packages/chat/css/main.css b/packages/chat/css/main.css
index f22b0ce..a678f2e 100644
--- a/packages/chat/css/main.css
+++ b/packages/chat/css/main.css
@@ -526,31 +526,13 @@
 }
 
 /* ── Dialog UserPicker overflow fix ─────── */
-/* Allow the autocomplete dropdown to overflow the dialog body */
+/* Allow the autocomplete dropdown to overflow the dialog body.
+   Applies to both New Conversation and Add Participant dialogs. */
 
-.chat-new .sw-user-picker {
-  position: relative;
-}
-
-.chat-new .sw-user-picker__dropdown,
-.chat-participants .sw-user-picker__dropdown {
-  position: absolute;
-  z-index: 9999;
-  left: 0;
-  right: 0;
-  max-height: 200px;
-  overflow-y: auto;
-  background: var(--bg-surface);
-  border: 1px solid var(--border);
-  border-radius: 6px;
-  box-shadow: var(--shadow-lg);
-}
-
-/* Ensure dialog content doesn't clip the dropdown */
-.sw-dialog__body:has(.chat-new) {
+.sw-dialog__body:has(.sw-user-picker) {
   overflow: visible;
 }
 
-.sw-dialog__content:has(.chat-new) {
+.sw-dialog:has(.sw-user-picker) {
   overflow: visible;
 }