/* src/layout/file-tree/FileTreeItem.css */

.file-tree-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.375rem;
  /* Left padding is set inline (depth-aware, includes FILE_TREE_BASE_PAD_PX).
   * Right padding leaves room for the absolute-positioned action button. */
  padding: 0.25rem 1.75rem 0.25rem 0;
  cursor: pointer;
  /* Flush rectangular hover/active fill to match the rectilinear chrome
   * across the rest of the app shell (side-tab strip, ribbon, chrome row). */
  border-radius: 0;
  user-select: none;
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: background-color 0.1s ease;
}

.file-tree-item:hover {
  background-color: var(--file-tree-hover-bg);
}

.file-tree-item:focus {
  outline: none;
  background-color: var(--file-tree-hover-bg);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.file-tree-item--active {
  background-color: var(--file-tree-active-bg);
}

.file-tree-item--active:hover {
  /* Distinct from base hover and active — see --file-tree-active-hover-bg
   * in src/index.css. Previously this rule reused --file-tree-active-bg,
   * which silently collapsed the hover affordance for active rows. */
  background-color: var(--file-tree-active-hover-bg);
}

.file-tree-item--dragging {
  opacity: 0.5;
}

.file-tree-item--drag-over-top::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background-color: var(--accent);
}

.file-tree-item--drag-over-bottom::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background-color: var(--accent);
}

.file-tree-item__chevron {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: transform 0.15s ease;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.file-tree-item__chevron:hover {
  color: var(--text-primary);
}

.file-tree-item__chevron--expanded {
  transform: rotate(90deg);
}

.file-tree-item__icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
}

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

/* Action button (ellipsis / more) — positioned absolutely to avoid
   consuming layout space and truncating filenames when hidden. */
.file-tree-item__action-btn {
  position: absolute;
  right: 0.25rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: none;
  background: none;
  color: var(--text-tertiary);
  cursor: pointer;
  /* Square — matches the rectilinear chrome. */
  border-radius: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.1s ease, background-color 0.1s ease;
}

.file-tree-item:hover .file-tree-item__action-btn,
.file-tree-item:focus-within .file-tree-item__action-btn {
  opacity: 1;
  pointer-events: auto;
}

.file-tree-item__action-btn:hover {
  background-color: var(--file-tree-hover-bg);
  color: var(--text-primary);
}

/* Mobile touch targets */
@media (pointer: coarse) {
  .file-tree-item {
    min-height: 44px;
    padding: 0.5rem;
    /* Always reserve space for action button on mobile */
    padding-right: 2.5rem;
  }

  .file-tree-item__chevron {
    width: 24px;
    height: 24px;
  }

  /* Mobile: always show action button */
  .file-tree-item__action-btn {
    opacity: 1;
    pointer-events: auto;
    width: 28px;
    height: 28px;
    right: 0.5rem;
  }
}