.dropzone {
  border: 2px dashed #6c757d;
  border-radius: .75rem;
  padding: 2rem;
  text-align: center;
  transition: border-color .15s ease-in-out, background-color .15s ease-in-out;
  cursor: pointer;
}
.dropzone.dragover {
  border-color: #0d6efd;
  background: rgba(13,110,253,.05);
}
.thumb {
  width: 100%; height: 160px; object-fit: cover;
  border-radius: .5rem;
}
.file-card.success { border-color:#198754 !important; }
.file-card.error { border-color:#dc3545 !important; }
.file-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }