.drop-zone{cursor:pointer;transition:all 0.2s ease-in-out;background-color:#f8f9fa;border:2px dashed #6c757d;border-radius:0.5rem;padding:1.5rem}.drop-zone:hover{background-color:#e9ecef;border-color:#0d6efd}.drop-zone.dragover{border-color:#0d6efd;background-color:#e7f1ff;box-shadow:0 0 10px rgba(13,110,253,0.5)}.thumbnail{position:relative;margin:0px;padding:10px;border:1px solid #ddd;border-radius:4px;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,0.1);text-align:center}.thumbnail img{width:100%;height:150px;object-fit:cover;border-radius:4px;text-align:center}.dimension-label{margin-top:8px;font-size:13px;font-weight:bold;color:#333}.remove-btn{margin-top:8px;width:100%;background-color:#d9534f;color:white;border:none;padding:6px 0;border-radius:4px;font-size:13px;cursor:pointer}#preview .col-xs-6,#preview .col-sm-4,#preview .col-md-3{padding-left:5px;padding-right:5px}#statusMessage{margin-top:20px;margin-bottom:20px;font-weight:bold}