/* TechTools — pdf-merge styles [v2.1 §4.2 D2] */
.drop-zone {
  border: 2px dashed rgba(255,255,255,0.15);
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.drop-zone.dragover {
  border-color: var(--accent-doc);
  background: rgba(6,182,212,0.06);
}
.drop-zone p { margin-bottom: 12px; }
.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 18px;
}
.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 10px 14px;
  cursor: grab;
  user-select: none;
}
.file-item.dragging { opacity: 0.5; }
.file-item .file-icon { font-size: 18px; }
.file-item .file-name {
  flex: 1;
  font-size: 13px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-item .file-size {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}
.file-item .file-remove {
  border: none;
  background: rgba(255,0,110,0.85);
  color: #fff;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
}
.pdf-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}