A dark, realistic fantasy book cover with no characters, only environment. A cursed, abandoned medieval castle almost entirely consumed by dense blackthorn vines, wild rose bushes, and twisted dead trees under a stormy evening sky. Only the highest towers remain visible above the massive overgrowth. Cold moonlight breaks through heavy clouds, casting pale light across the thorns and ancient stone walls. Thick fog creeps along the ground, creating an atmosphere of isolation, silence, and forgotten magic. Gothic, ominous mood, hyper-realistic, cinematic lighting, dramatic shadows, ultra detailed textures of stone, thorns, moss, mist, and tangled vegetation, desaturated blue-gray color palette, dark fantasy style.