@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-content, #quiz-container, #result-screen {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

html {
    scroll-behavior: smooth;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1; 
}
::-webkit-scrollbar-thumb {
    background: #d1d5db; 
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #9ca3af; 
}