diff --git a/src/components/DeleteLecturerConfirmDialog.tsx b/src/components/DeleteLecturerConfirmDialog.tsx
index 40bcaff..bb74fbe 100644
--- a/src/components/DeleteLecturerConfirmDialog.tsx
+++ b/src/components/DeleteLecturerConfirmDialog.tsx
@@ -178,7 +178,7 @@ export function DeleteLecturerConfirmDialog({
               void handleDelete();
             }}
             disabled={!canDelete}
-            className="bg-red-600 hover:bg-red-700 focus:ring-red-600"
+            className="bg-destructive text-white hover:bg-destructive/90"
           >
             <Trash2 className="w-4 h-4 mr-2" />
             {busy ? "Wird gelöscht…" : "Endgültig löschen"}
diff --git a/src/components/LecturerDetailDialog.tsx b/src/components/LecturerDetailDialog.tsx
index 42609ce..67cf82d 100644
--- a/src/components/LecturerDetailDialog.tsx
+++ b/src/components/LecturerDetailDialog.tsx
@@ -401,7 +401,6 @@ export function LecturerDetailDialog({
               disabled={
                 !detail || loading || deletionState !== "idle"
               }
-              className="bg-red-600 hover:bg-red-700 text-white"
             >
               <Trash2 className="w-4 h-4 mr-2" />
               Account löschen