Cyberpunk Submarine in a Hidden Lagoon

A battered submarine with cyberpunk augmentations lies half-submerged in a hidden lagoon inside a dark cavern. Neon cyan and magenta lights crawl over riveted hull plates, digital gauges glow through portholes, and cables trail into the water. Turquoise, glassy water reflects stalactites and bioluminescent flora; jellyfish with neon cores drift by, casting soft halos. Steam vents hiss, creating drifting mist that swirls around rust and barnacles. The scene is moody cyberpunk noir, ultra-detailed and photorealistic, with cinematic lighting and high-contrast shadows. Perspective: slightly above water, wide shot framing the submarine and the cave mouth, shallow depth of field focusing on glowing details, textures of metal, glass, algae, and coral. Palette: electric blues, teals, pinks, purples, warm amber from internal lights.