.upload-area { border: 2px dashed #ced4da; border-radius: 8px; padding: 2.5rem; text-align: center; transition: border-color .2s, background-color .2s; cursor: pointer; } .upload-area.dragging { border-color: #1b6ec2; background-color: #f0f7ff; } .upload-area .upload-icon { font-size: 3rem; margin-bottom: 0.5rem; } .progress-bar { transition: width 0.4s ease; } .table-success td { opacity: 0.75; }