CREATE TABLE IF NOT EXISTS `vehicles` (
  `id` INT AUTO_INCREMENT PRIMARY KEY,
  `make` VARCHAR(255) NOT NULL,
  `model` VARCHAR(255) NOT NULL,
  `year` INT NOT NULL,
  `license_plate` VARCHAR(50) NOT NULL UNIQUE,
  `vin` VARCHAR(100) NOT NULL UNIQUE,
  `status` VARCHAR(50) DEFAULT 'active',
  `driver_id` INT NULL,
  `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;