* {
            font-family: 'Poppins', sans-serif;
        }
        
        .nav-active {
            color: #3b82f6;
            font-weight: 600;
        }
        
        .section-hidden {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        
        .section-visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .contact-form input:focus, .contact-form textarea:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
        }