diff --git a/cpp/framework/app_base.h b/cpp/framework/app_base.h
index 7aa157be..5ebcecf0 100644
--- a/cpp/framework/app_base.h
+++ b/cpp/framework/app_base.h
@@ -34,7 +34,7 @@ struct AppConfig {
     int width = 1280;
     int height = 720;
     bool vsync = true;
-    bool viewports = false; // Enable multi-viewport: ImGui windows become real OS windows
+    bool viewports = true; // Multi-viewport ON por defecto: ventanas ImGui arrastrables fuera del main window
     ThemeMode theme = ThemeMode::FnDark; // Identidad visual unificada por defecto
     float bg_r = 0.102f; // fn_tokens::colors::bg (dark.7 #1A1B1E)
     float bg_g = 0.106f;