The Retargeting Ad Copywriter

Act as a performance marketing specialist. Help me write copy for a social media ad that retargets visitors who viewed sale items but did not purchase, reminding them of the expiring offer.

• Product Category Viewed: [e.g., "Running Shoes"]
• Offer: [e.g., "20% off ends Sunday"]

Task: Write 3 versions of short ad copy for a retargeting pixel audience. The copy should remind them of what they viewed, reiterate the offer, and emphasize the urgency of the deadline. Use social proof if possible. (e.g., "Still thinking about those running shoes? Don't let 20% off run away! Sale ends Sunday.").