An extraordinarily creative, museum-quality Art Nouveau illustration inspired by Alphonse Mucha, depicting a majestic Pirate Queen sitting atop an overflowing antique treasure chest underwater. The wooden chest spills out sparkling gold doubloons, emerald gemstones, and glowing pearl necklaces. The Queen is dressed in ornate nautical velvet, adorned with brass compass pendants and glowing ocean pearls. Floating gracefully around her are translucent bioluminescent jellyfish and swirling sea kelp. Rich gilded gold leaf patterns, intricate filigree borders, deep sapphire and turquoise color palette, museum-quality fine art, 8k resolution.