CREATE TABLE IF NOT EXISTS `candidates` (
  `id` INT AUTO_INCREMENT PRIMARY KEY,
  `name` VARCHAR(255) NOT NULL,
  `email` VARCHAR(255) NOT NULL,
  `phone` VARCHAR(50),
  `status` ENUM('Applied', 'Interviewing', 'Offered', 'Hired', 'Rejected') NOT NULL DEFAULT 'Applied',
  `notes` TEXT,
  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);