3d cube box letter alphabet of letter n c u a in negative space and shadow

font text brand logo line presentation cartoon advertising poster number diagram label circle document signage design calligraphy sign screenshot cube box letter alphabet negative space shadow alphabet business cube geometric logotype shape template box symbol letter square sign 3d company abstract modern design initial concept corporate identity isometric technology construction creative architecture building simple industry brand graphic typography digital monogram object internet hexagon marketing game structure media shadow negative N C U A