diff --git a/nextjs-app/app/globals.css b/nextjs-app/app/globals.css
index 285fc85..bf97e41 100644
--- a/nextjs-app/app/globals.css
+++ b/nextjs-app/app/globals.css
@@ -86,7 +86,7 @@ body {
     border-bottom: 1px solid var(--border-color);
     position: sticky;
     top: 0;
-    z-index: 100;
+    z-index: 1000;
 }
 
 .header-content {
diff --git a/nextjs-app/components/Navigation.module.css b/nextjs-app/components/Navigation.module.css
index 73bad29..c7941cf 100644
--- a/nextjs-app/components/Navigation.module.css
+++ b/nextjs-app/components/Navigation.module.css
@@ -1,7 +1,7 @@
 .header {
   position: sticky;
   top: 0;
-  z-index: 100;
+  z-index: 1000;
   background: var(--bg-card, white);
   border-bottom: 1px solid var(--border-color, #e5dfd5);
   box-shadow: 0 2px 8px rgba(26, 22, 18, 0.06);