4K ultra-realistic cinematic loop of gentle rain falling on a windowpane at night, viewed from inside a dimly lit cozy room. Blurry city lights (bokeh) glow in the distance. Occasional soft lightning flashes illuminate the sky faintly. Reflections shimmer on the wet glass. A steaming coffee mug rests on a wooden windowsill in the foreground. Subtle camera movement with a very slow zoom-in. Moody atmosphere, low saturation colors, melancholic tone. Seamless 10-second loop. Render in 24fps, natural lighting, shallow depth of field, ambient rain sound implied