body {
    margin: 0;
    overflow: hidden;
    font-family: Arial, sans-serif;
}

#loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #1a1a1a;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    z-index: 1000;
}

#loading-progress {
    font-size: 24px;
    font-weight: bold;
    margin-top: 10px;
    color: #0066cc;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #333;
    border-top: 5px solid #0066cc;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#info {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 15px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.6;
}

#desktop-controls {
    display: block;
}

#mobile-controls {
    display: none;
}

@media (max-width: 768px) {
    #desktop-controls {
        display: none;
    }
    
    #mobile-controls {
        display: block;
    }
}

canvas {
    display: block;
}