diff --git a/src/css/main.css b/src/css/main.css
index a944074..d3f9ca3 100644
--- a/src/css/main.css
+++ b/src/css/main.css
@@ -88,6 +88,7 @@
   --toggle-on-bg:        rgba(214,92,255,0.22);
   --logo-shadow:         color-mix(in srgb, var(--accent) var(--logo-shadow-pct), transparent);
   --bg-solid-fallback:   #0a060e;
+  color-scheme:          dark;
 }
 
 /* Fallback fuer Browser die backdrop-filter blockieren (z.B. Brave Shields) */