Elegant Art Nouveau dining hall, ornate chandeliers, sinuous wooden furniture, velvet upholstery, curved lines, organic forms, flowing patterns, botanical motifs, stained glass windows, intricate metalwork, warm golden lighting, rich wood tones, plush carpets, majestic ceilings, grandiose mirrors, sophisticated table settings, luxurious fabrics, whimsical decorative accents, subtle color palette, high-end materials, refined textures, 1/2 composition, dramatic shadows, atmospheric ambiance.