Melancholy Guitar Girl and Cat

Create a wide-format minimalist anime illustration, leaving ample negative space on the left and placing the main subject on the right. The image shows a quiet girl in full profile, facing left, with ample negative space {argument name="hair color" default="Dark blue-black"} She has a short bob haircut with bangs, pale skin, and a calm yet melancholic expression. She wears an oversized dark hooded jacket over a dark plaid school uniform-style outfit, a short plaid pleated skirt, black fishnet stockings, a small black halter-neck bow tied at the thigh, and thick-soled black shoes. A tall, dark guitar case is slung vertically over her shoulder, towering above her head. One of her hands hangs naturally, holding a smartphone. A silhouette-style black cat sits at her feet, looking up at her. The background uses a soft gray-white background with pale blue-gray watercolor-like clouds behind the figure. The lines are delicate, the shadows are soft blue-green, and subtle cel shading is used. The composition is light and airy, creating a quiet, independent musical atmosphere. It has a high-detail anime-style main visual, with no text and no borders.