body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #fff;
    overflow: hidden;
}
.container {
    width: 100vw;
    height: 100vh;
    background: white;
}
.model-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: #fff;
}
.error-message {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    text-align: center;
    color: #d32f2f;
    background-color: rgba(255, 238, 238, 0.9);
    border: 1px solid #ffcdd2;
    z-index: 100;
}
.loading-message {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    text-align: center;
    color: #1976d2;
    background-color: rgba(227, 242, 253, 0.9);
    border: 1px solid #90caf9;
    z-index: 100;
}
.no-sku-message {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    text-align: center;
    color: #f57c00;
    background-color: rgba(255, 243, 224, 0.9);
    border: 1px solid #ffcc02;
    z-index: 100;
}