Create a cinematic 15-second fast-food commercial for McDonald’s. Start with a close-up of sizzling beef patties on a grill, melting cheese dripping over a juicy burger, crispy golden fries being salted in slow motion, and an ice-cold Coca-Cola with condensation droplets. Show a happy young group of friends enjoying burgers and fries in a bright modern McDonald’s restaurant. End with a hero shot of a Big Mac meal on a clean table, glowing warm lighting, shallow depth of field, vibrant red and yellow brand colors, energetic background music, ultra-realistic, 4K commercial quality.