CREATE TABLE IF NOT EXISTS activity_logs (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  user_id INT UNSIGNED NOT NULL,
  user_prenom VARCHAR(100) NOT NULL,
  user_nom VARCHAR(100) NOT NULL,
  action VARCHAR(100) NOT NULL,
  details TEXT DEFAULT NULL,
  ip_address VARCHAR(45) DEFAULT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
  INDEX idx_created_at (created_at),
  INDEX idx_user_id (user_id),
  INDEX idx_action (action)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;