Brass Diver in Crystal Depths

Art nouveau poster of a deep-sea diver suspended inside a sunlit greenhouse, brass diving suit and helmet fused with molten glass tendrils, tense cinematic atmosphere, midnight navy shadows against gleaming brass highlights, towering glass-vine columns and luminous fog, intricate ornamental framing, elegant vertical composition with expansive clean negative space for typography on one side, radiant stained-glass reflections, delicate botanical filigree, dramatic backlight, hyper-detailed poster design, sleek high-end advertising aesthetic