CREATE TABLE IF NOT EXISTS districts (
    id INT PRIMARY KEY AUTO_INCREMENT,
    city_id INT NOT NULL,
    slug VARCHAR(100) NOT NULL,
    name_lv VARCHAR(255) NOT NULL,
    name_ru VARCHAR(255),
    name_en VARCHAR(255),
    lat DECIMAL(10,7),
    lng DECIMAL(10,7),
    is_active TINYINT(1) DEFAULT 1,
    sort_order INT DEFAULT 0,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (city_id) REFERENCES cities(id) ON DELETE CASCADE,
    UNIQUE KEY city_slug (city_id, slug)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;