AFS, Ancient Flame Sanctuary, vast circular sacred chamber beneath an ancient stone dome, colossal weathered marble columns surrounding a symmetrical ritual hall, central bronze brazier emitting a towering crimson flame vortex and crackling arcane energy reaching toward an oculus skylight, glowing red magic sigils engraved into the polished black stone floor, dense low mist drifting across reflective surfaces, warm candlelit alcoves casting golden illumination, dramatic volumetric god rays descending from above, dark gothic fantasy architecture, intricate carvings, ancient ceremonial atmosphere, high contrast lighting, deep shadows, ember particles, mystical energy field, cinematic composition, ultra-detailed environment, monumental scale, ancient forgotten temple, occult sanctuary, realistic materials, atmospheric haze, epic fantasy worldbuilding