#three-container {
    border: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    background-color: #ffffff;
    position: relative;
}

#front-3d-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.95), rgba(245, 245, 245, 0.95));
    
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    
    z-index: 10;
    
    color: #4A4A4A;
    font-family: 'Open Sans', Arial, sans-serif;
    font-size: 1.1em;
    text-align: center;
    user-select: none; 
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.loader-spinner {
    border: 5px solid #E0E0E0; 
    border-top: 5px solid #007bff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0, 123, 255, 0.2);
}

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

#front-3d-loader p {
    margin: 0;
    font-size: 1.1em;
    font-weight: 600;
    color: #333;
}

#front-3d-loader span.progress-text {
    display: block;
    font-size: 0.9em;
    color: #666;
    margin-top: 5px;
}