/* Mobile and responsive styles */
@media (max-width: 768px) {
    .instruction-container {
        height: 40px;
        margin-bottom: 1rem;
    }
    
    .spinning-letters {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }
    
    @keyframes letterSpin {
        0% {
            transform: rotateX(0deg) scale(0.5);
            opacity: 0;
            letter-spacing: -5px;
        }
        50% {
            transform: rotateX(180deg) scale(1.1);
            opacity: 0.8;
            letter-spacing: 4px;
        }
        100% {
            transform: rotateX(360deg) scale(1);
            opacity: 1;
            letter-spacing: 1px;
        }
    }
    
    .lottery-container {
        margin-bottom: 1rem;
    }
    
    .drum-body {
        width: 200px;
        height: 200px;
    }
    
    .topic-ball {
        width: 40px;
        height: 40px;
        font-size: 0.5rem;
    }
    
    .topic-ball span {
        font-size: 0.4rem;
    }
    
    .selected-topic {
        font-size: 1.2rem;
    }
    
    .title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }
    
    .cards-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .card {
        max-width: 150px;
    }
    
    .card-title {
        font-size: 1.4rem;
    }
    
    .card-description {
        font-size: 0.9rem;
    }
    
    .prompt-title {
        font-size: 1.1rem;
    }
    
    .prompt-text {
        font-size: 0.9rem;
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}