#blackhole-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

#blackhole-bg canvas {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: auto;
    cursor: grab;
}

#blackhole-bg canvas:active {
    cursor: grabbing;
}

.controls-info {
    position: fixed;
    bottom: 20px;
    left: 20px;
    color: rgba(200, 220, 255, 0.3);
    font-size: 12px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    padding: 8px 12px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
    max-width: 300px;
    line-height: 1.5;
    pointer-events: none;
}

.mobile-controls-info {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    color: rgba(200, 220, 255, 0.3);
    font-size: 11px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 10px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
    max-width: 150px;
    line-height: 1.3;
    pointer-events: none;
}

.zoom-indicator {
    position: fixed;
    top: 20px;
    right: 20px;
    color: rgba(200, 220, 255, 0.5);
    font-size: 12px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 10px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.view-indicator {
    position: fixed;
    top: 50px;
    right: 20px;
    color: rgba(200, 220, 255, 0.5);
    font-size: 12px;
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    padding: 6px 10px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
    pointer-events: none;
}

@media (max-width: 768px) {
    .controls-info {
        display: none;
    }

    .mobile-controls-info {
        display: block;
    }

    .zoom-indicator {
        font-size: 11px;
        padding: 4px 8px;
        top: 10px;
        right: 10px;
    }

    .view-indicator {
        font-size: 11px;
        padding: 4px 8px;
        top: 40px;
        right: 10px;
    }
}

@media (max-width: 768px) and (max-height: 700px) {
    #blackhole-bg canvas {
        image-rendering: optimizeSpeed;
    }
}