/**
 * @mention autocomplete
 *
 * Mirrors the shared .ac-* autocomplete pattern from autocomplete.css.
 * JS keeps the existing .mention-autocomplete-* class names.
 * JS sets `top` inline (caret-anchored) — CSS only carries appearance.
 */

.mention-autocomplete-dropdown {
  position: absolute;
  left: 0;
  right: 0;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  max-height: 280px;
  overflow-y: auto;
  z-index: var(--z-dropdown);
  padding: var(--spacing-xs);
}

.mention-autocomplete-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.mention-autocomplete-item:hover,
.mention-autocomplete-item.selected {
  background: var(--color-bg-secondary);
}

.mention-avatar {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
}

.mention-avatar img {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.mention-avatar-placeholder {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.mention-info {
  display: flex;
  flex-direction: column;
}

.mention-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.mention-username {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}