.mptbm-block-preview {
    background: #f8f9fa;
    border: 1px dashed #dee2e6;
    border-radius: 4px;
    padding: 20px;
    text-align: center;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.mptbm-block-placeholder {
    color: #6c757d;
}

.mptbm-block-placeholder .dashicons {
    font-size: 36px;
    width: 36px;
    height: 36px;
    margin-bottom: 10px;
}

.mptbm-block-placeholder h3 {
    margin: 10px 0;
    font-size: 16px;
    font-weight: 600;
}

.mptbm-block-placeholder p {
    margin: 0;
    font-size: 13px;
}