.mention-popup {
  position: absolute;
  z-index: 1100;
  background: var(--color-section-bg);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  border-radius: 4px;
  padding: 0.25em;
}

.mention-popup ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mention-item {
  padding: 0.3em 0.5em;
  cursor: pointer;
}

.mention-item:hover {
  background: var(--color-drag-over);
}

.mention-item.active {
  background: var(--color-drag-over);
}