Prompt: molten lava sea, floating islands of obsidian and pumice, glass spires rising from the waves, clouds of ash and embers, city of clouds and glass suspended above the fiery depths, inspired by john martin and h.r. giger, dramatic lighting of glowing oranges and reds, thick billowing smoke illuminated by the lava glow, ash raining down like snow, blistering heat haze, by giger, martin, zdzislaw beksiński and simon stålenhag, 16K masterpiece, digital painting, painterly style, warm tones, cinematic atmosphere