interior of a vast grimdark gothic cathedral, towering stone arches and columns receding into darkness, large ornate stained glass windows with red and gold light filtering through, candles and incense smoke, ancient parchment scrolls and tomes on stone shelves, chains hanging from the ceiling, cog and skull iconography carved into the stonework, embers floating in the air, no people, no figures, hyper-detailed concept art, deep red and black palette, dramatic backlit atmosphere, cinematic wide angle perspective --ar 16:9 --style raw