/* Pixel font animation */
@keyframes glow {
    0%, 100% { text-shadow: 0 0 10px rgba(255, 215, 0, 0.8); }
    50% { text-shadow: 0 0 20px rgba(255, 215, 0, 1); }
}

#hud {
    animation: glow 2s infinite;
}

/* Button hover effects */
.song-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.3s;
}

.song-button:hover::before {
    opacity: 1;
}

/* Loading animation */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loading::after {
    content: '🎸';
    display: inline-block;
    animation: spin 2s linear infinite;
    margin-left: 10px;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .song-button {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    #hud {
        font-size: 16px;
        padding: 10px 20px;
    }
}

@media (max-width: 600px) {
    .song-button {
        padding: 10px 15px;
        font-size: 12px;
    }
    
    #controls {
        gap: 10px;
    }
}