.bb-drop-zone {
  border: 2px dashed #aaa;
  border-radius: 4px;
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  background: #fafafa;
  transition:
    border-color 0.2s,
    background 0.2s;
  margin-bottom: 0.75rem;
}

.bb-drop-zone:focus {
  outline: 3px solid #1779ba;
}

.bb-drop-zone.bb-drag-over {
  border-color: #1779ba;
  background: #e8f2fb;
}

.bb-drop-zone i.fa {
  font-size: 2rem;
  color: #888;
  display: block;
  margin-bottom: 0.5rem;
}

.bb-file-list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}

.bb-file-item {
  display: flex;
  align-items: center;
  padding: 0.3rem 0.5rem;
  border: 1px solid #e0e0e0;
  border-radius: 3px;
  margin-bottom: 0.25rem;
  background: #f5f5f5;
  font-size: 0.875rem;
  gap: 0.4rem;
}

.bb-file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bb-file-size {
  color: #666;
  white-space: nowrap;
}

.bb-file-remove {
  background: none;
  border: none;
  color: #cc0000;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 0.25rem;
}

.bb-file-remove:hover {
  color: #990000;
}

.bb-file-slot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}