diff --git a/wwwroot/css/calendar-events-css.css b/wwwroot/css/calendar-events-css.css
index c70f962..021965a 100644
--- a/wwwroot/css/calendar-events-css.css
+++ b/wwwroot/css/calendar-events-css.css
@@ -286,6 +286,14 @@ swp-event-group.stack-level-4 {
   margin-left: 60px;
 }
 
+/* Shadow for stacked events (level 1+) */
+swp-event[data-stack-link]:not([data-stack-link*='"stackLevel":0']),
+swp-event-group[data-stack-link]:not([data-stack-link*='"stackLevel":0']) swp-event {
+  box-shadow:
+    0 -1px 2px rgba(0, 0, 0, 0.1),
+    0 1px 2px rgba(0, 0, 0, 0.1);
+}
+
 /* Child events within grid */
 swp-event-group swp-event {
   position: relative;