.container {
    width: 1000px;
    max-width: 100%;
}

.three-cols-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.preview-area {
    width: 100%;
    text-align: center;
}

.preview-area .info {
    margin: 12px 0;
    font-weight: 600;
    color: #555;
}

#render-zone {
    display: inline-block;
    margin: 12px 0;
}

#result-area {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

#result-image {
    max-width: 100%;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.hidden {
    display: none;
}

.download-btn {
    background-color: #4a90e2;
}

.download-btn:hover {
    background-color: #357abd;
}