Move UI definition to separate directory

main.c

@@ -7,7 +7,8 @@
 #define CLAY_IMPLEMENTATION
 #include "clay/clay.h"
 #include "clay/clay_renderer_SDL3.c"
-#include "clay/clay_video_demo.c"
+
+#include "ui/clay_video_demo.c"
 
 #include <flecs.h>
 

ui/clay_video_demo.c

@@ -242,7 +242,8 @@ Clay_RenderCommandArray ClayVideoDemo_CreateLayout(ClayVideoDemo_Data *data) {
                     .childGap = 16,
                     .padding = CLAY_PADDING_ALL(16),
                     .sizing = layoutExpand
-                }
+                },
+                .cornerRadius = CLAY_CORNER_RADIUS(8)
             }) {
                 Document selectedDocument = documents.documents[data->selectedDocumentIndex];
                 CLAY_TEXT(selectedDocument.title, CLAY_TEXT_CONFIG({