A futuristic combat spacecraft with a sleek, aerodynamic design set against a light, ethereal background, sci-fi intricate masterpiece, haunting yet captivating, matte painting style of a film poster, embodying the golden ratio, trending on CGSociety, complex and grand, trending on ArtStation, reminiscent of the styles of Artgerm, H.R. Giger, and Beksinski, incredibly detailed, vivid, resembling a high-budget cinematic character render, ultra-high-definition model, with subtle bioluminescent accents illuminating its form and a mysterious, foreboding aura.