@layer utilities {
            .text-shadow {
                text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            }
            .nav-active {
                @apply border-b-2 border-primary text-primary;
            }
            .card-hover {
                @apply transition-all duration-300 hover:shadow-lg hover:-translate-y-1;
            }
            .section-fade {
                @apply opacity-0 translate-y-8 transition-all duration-700;
            }
            .section-visible {
                @apply opacity-100 translate-y-0;
            }
            .btn-pulse {
                animation: pulse 2s infinite;
            }
            @keyframes pulse {
                0% { transform: scale(1); }
                50% { transform: scale(1.05); }
                100% { transform: scale(1); }
            }
        }