.copy-btn {
  position: relative;
  margin-top: 4px;
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  background: rgba(255,255,255,0.1);
  color: #ccc;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.2s;
}
.copy-btn:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}
.copy-btn.copied {
  background: #28a745;
  border-color: #28a745;
  color: #fff;
}