Mood: The mood of the video appears to be intense and passionate, with a sense of danger and urgency. The presence of a gun and the blue tone of the image create a dramatic and thrilling atmosphere. The theme seems to revolve around love, obsession, or fixation, as hinted by the title 'Dil Hai Deewana'. The overall emotion conveyed is one of fervor and possibly even madness.

Environment: The environment or setting of the video seems to be a dark and possibly indoor location, given the blue tone and the lighting. The presence of a gun suggests that the video may involve action or thriller elements. The focus on the two lead actors, Arjun Kapoor and Rakul Preet Singh, implies that the setting might be a romantic or dramatic location, but the gun and the intense expressions suggest a more complex and possibly dangerous scenario.