eerily realistic halloween castle wallpaper in dark cyan

halloween castle wallpaper layered landscapes atmospheric dark cyan photorealistic unreal supernatural setting eerily realistic process emphasis harsh lighting full stars story fantasy spooky atmosphere haunted gothic architecture mysterious enchanting gloomy ethereal mystical sinister creepy horror grim macabre epic magical nightmare featuring moody landscape hyper-detailed rendering showcases color palette creating ambiance elaborate flickering light making perfect choice halloween-themed decor generated