{currentThread.question}
diff --git a/web/src/theme/duh-theme.css b/web/src/theme/duh-theme.css
index 60d45c6..dfbef65 100644
--- a/web/src/theme/duh-theme.css
+++ b/web/src/theme/duh-theme.css
@@ -40,6 +40,12 @@
--radius-md: 10px;
--transition-fast: 150ms ease-out;
+ /* Z-index scale */
+ --z-background: -1;
+ --z-dropdown: 100;
+ --z-overlay: 200;
+ --z-modal: 300;
+
/* Typography */
--font-ui: 'Inter', system-ui, -apple-system, sans-serif;
}