Stylish advertising poster with a girl in streetwear next to a huge backpack against the background of urban graffiti

Prompt

A cool teen lifestyle advertisement poster. A confident teenage girl in casual streetwear with headphones around neck poses beside a giant urban backpack 3x her height in black and neon yellow with multiple pockets visible, "URBAN PACK" printed in bold on the front pocket. Cool urban street background with graffiti wall and city blur. Bold urban sans-serif typography "URBAN PACK" in neon yellow and black filling background. 

Tagline bottom: "Pack your world." Small text top-right corner reads "Designed with Nano Banana 2" in grey. Photorealistic, teen urban lifestyle commercial, cool street lighting with neon accents.