@layer utilities {
        /* Modern animations */
        .modal-enter {
          animation: modalEnter 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        }
        @keyframes modalEnter {
          from {
            opacity: 0;
            transform: translateY(20px) scale(0.98);
          }
          to {
            opacity: 1;
            transform: translateY(0) scale(1);
          }
        }
        
        .step-enter {
          animation: stepEnter 0.3s ease-out forwards;
        }
        @keyframes stepEnter {
          from {
            opacity: 0;
            transform: translateX(10px);
          }
          to {
            opacity: 1;
            transform: translateX(0);
          }
        }
        
        .step-exit {
          animation: stepExit 0.2s ease-in forwards;
        }
        @keyframes stepExit {
          from {
            opacity: 1;
            transform: translateX(0);
          }
          to {
            opacity: 0;
            transform: translateX(-10px);
          }
        }
        
        /* Modern card hover effects */
        .selectable-item {
          @apply transition-all duration-300 ease-in-out;
        }
        .selectable-item:hover {
          @apply transform scale-[1.01] shadow-lg;
        }
        .selectable-item.selected {
          @apply border-green-500 bg-green-50 shadow-md shadow-green-100/50 ring-1 ring-green-200;
        }
        
        /* Modern overlay */
        .modal-overlay {
          @apply backdrop-blur-sm;
        }
        
        /* Modern inputs */
        .modern-input {
          @apply transition-all duration-200 border-gray-300 focus:ring-2 focus:ring-green-400 focus:border-transparent;
        }
        
        /* Modern buttons */
        .modern-btn {
          @apply transition-all duration-200 transform hover:scale-[1.02] active:scale-[0.98];
        }
        
        /* Responsive adjustments */
        @media (max-width: 640px) {
          .modal-content {
            @apply max-h-[95vh] rounded-none;
          }
        }
      }