A photorealistic fantasy concept art of a luminescent heart that appears to be melting, casting radiant light against a red-to-black gradient background. The surrounding atmosphere is illuminated with dynamic lighting, creating an ethereal and cinematic visual. The heart's texture is incredibly detailed, showcasing intricate patterns and subtle glow that seems to pulse with life. This stunning piece, inspired by the styles of Artgerm, Greg Rutkowski, Peter Mohrbacher, and Guweiz, brings forth a sense of mystical energy and captivating beauty, evoking a seamless blend of creativity and realism.