Custom Branded Black Plastic Bag

Create a realistic studio product photograph of a single large black plastic garbage bag standing upright, fully stuffed and bulging into a rounded rectangular mound, with the top gathered tightly and tied in a small knot. The bag material is glossy, crinkled, wrinkled polyethylene with strong highlights, realistic folds, creases, tension lines, and subtle translucency variations. Centered on the front of the bag is a clean white corporate logo: a stylized icon made of vertical lightning-bolt-like bars rising diagonally above a small geometric mark, with the bold uppercase word [brand name] printed beneath it. The logo should look screen-printed directly onto the plastic, slightly distorted by the wrinkles but still sharp and readable. Use a minimalist white seamless studio background, soft diffused lighting from the upper front-left, gentle shadow under the bag, high-end commercial product photography, square composition, centered subject, no extra objects, no people, no text other than the logo.