Widescreen YouTube channel banner 2560x1440 for jazz lounge, dark warm gradient background from deep navy to charcoal, soft golden ambient glow in center, elegant text "Gregory Jazz Lounge" strictly in the very center of the image (not in corners), white and gold colors, soft glow on text, atmospheric smoke and warm bokeh lights, cinematic, luxurious, high contrast, 8k, 16:9, composition focused on center, no text on edges
