Produce a minimalist line sketch of a sleek, mysterious black cat, capturing its essence with simplicity and elegance. The cat's form is represented by graceful, fluid lines, conveying its sinuous grace and feline agility. Its piercing eyes are depicted as bold, expressive dots, radiating an air of intelligence and curiosity. The outline of the cat's ears is sharp and pointed, adding to its enigmatic allure. The sketch focuses on capturing the essence of the cat's silhouette, emphasizing its elegant posture and subtle movements. The minimalistic approach highlights the beauty and mystique of the black cat in a striking and sophisticated manner.