.preview-container {
    position: relative;
    width: 100%;
    height: 200px;
    margin: auto;
    border: 2px dashed #ddd;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preview-container:hover {
    border-color: #007bff;
    background-color: #e3f2fd;
}

.preview-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-container .upload-placeholder {
    text-align: center;
    color: #6c757d;
    font-size: 12px;
}

.preview-container .upload-placeholder i {
    font-size: 24px;
    margin-bottom: 5px;
    display: block;
}

.remove-preview {
    position: absolute;
    top: 5px;
    right: 5px;
    background: #dc3545;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 12px;
    font-weight: bold;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.remove-preview:hover {
    background: #c82333;
}

.piece-upload-section {
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 20px;
    background-color: #f8f9fa;
}

.piece-upload-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 10px;
    display: block;
}

.form-fields-section {
    height: 100%;
}

.validation-info {
    background: #e7f3ff;
    border: 1px solid #b3d7ff;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.validation-info .icon {
    color: #0066cc;
    font-size: 18px;
    margin-right: 8px;
}