.pm3d-viewer {
    position: relative;
    width: 100%;
    overflow: hidden;
}
.pm3d-viewer canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
}
.pm3d-viewer canvas:active {
    cursor: grabbing;
}
.pm3d-loader {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    z-index: 10;
    transition: opacity 0.3s ease;
}
.pm3d-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e0e0e0;
    border-top-color: #1e1e1e;
    border-radius: 50%;
    animation: pm3d-spin 0.8s linear infinite;
}
.pm3d-progress {
    margin-top: 12px;
    font-size: 13px;
    color: #666;
    font-variant-numeric: tabular-nums;
}
.pm3d-error {
    color: #cc1818;
    font-size: 14px;
    text-align: center;
    padding: 20px;
}
@keyframes pm3d-spin {
    to { transform: rotate(360deg); }
}