Elegant Art Nouveau auditorium, ornate decorative details, flowing organic lines, luxurious velvet curtains, rich wooden paneling, intricate moldings, grand chandeliers, acoustic soundproofing materials, diffusers, absorbers, bass traps, fabric-wrapped panels, geometric patterned rugs, plush seating areas, warm golden lighting, soft ambient glow, shallow depth of field, 1/2 composition, realistic textures, subtle ambient occlusion.