spooky halloween background with bats and full moon – ai for seasonal art

screenshot vehicle darkness poster sea watercraft ocean ship painting boat underwater text wave night art font spooky halloween background bats full moon vector design seasonal art dark graphics creepy bat illustrations decor eerie atmosphere artwork haunting moonlit scenes digital festive invitation chilling sky ghostly visuals party decorations mysterious themes silhouettes enchanting captivating designs whimsical halloween atmospheric backgrounds event frightful spellbinding scary magic season decor imaginative moon projects mystical imagery character bewitching vibrant celebration unique ambiance fantasy holiday artwork