Opulent Art Nouveau interior, flowing organic lines, sinuous curves, ornate metalwork, stained glass windows, warm golden lighting, crystal chandeliers, bronze sconces, floral patterns, velvet fabrics, rich wood tones, intricate moldings, grandiose ceilings, luxurious ambiance, soft warm glow, low-key illumination, 1/2 composition, intimate atmosphere, realistic textures, subtle shading.