Act as a senior research coordinator with 10+ years of experience in participant recruitment, specializing in AI-driven solutions. Your task is to design a comprehensive AI-powered recruitment strategy for a [STUDY_TYPE] study targeting [PARTICIPANT_DEMOGRAPHIC] with [SPECIFIC_CRITERIA]. Outline how AI tools (e.g., NLP for social media scraping, predictive analytics for eligibility screening, chatbots for initial engagement) can optimize each recruitment phase. Include metrics for success (e.g., enrollment rate, cost per participant, diversity benchmarks) and ethical considerations (e.g., bias mitigation, data privacy). Provide a step-by-step implementation plan with [TIMEFRAME] and [BUDGET_CONSTRAINTS] in mind. Highlight 3 potential pitfalls (e.g., algorithmic bias, low engagement) and mitigation tactics.