An almost completely dark room at night, minimal interior, d...

An almost completely dark room at night, minimal interior, deep shadows. A very soft warm light from a distant street lamp slowly changes in intensity, like gentle breathing, extremely subtle and smooth. One full brightness cycle takes several minutes. Static tripod camera, no motion except light. No flicker, no sharp contrast, no visible source of light. Ultra realistic, calm, meditative, perfect for sleep. Seamless loop, no people, no text, no symbols, no sound.