using System.ComponentModel.DataAnnotations; namespace LittleShop.Models; public class VariantCollection { [Key] public Guid Id { get; set; } [Required] [StringLength(100)] public string Name { get; set; } = string.Empty; public string PropertiesJson { get; set; } = "[]"; public bool IsActive { get; set; } = true; public DateTime CreatedAt { get; set; } = DateTime.UtcNow; public DateTime UpdatedAt { get; set; } = DateTime.UtcNow; }