/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at http://mozilla.org/MPL/2.0/. */

:root {
  --listbox-selected-outline: none;
  --tree-header-table-height: 30px;
  --tree-header-cell-padding: 6px;
  --tree-header-cell-indent: 0;
  --list-item-min-height: 26px;
  --list-item-buttons-size: 22px;
  --table-header-cell-icon-width: 24px;
  --table-header-cell-icon-min-width: 24px;
  --table-row-cell-img-margin-inline-start: 6px;
  --table-row-cell-button-margin-inline-start: 4px;
}

:root[uidensity="compact"] {
  --tree-header-table-height: 27px;
  --tree-header-cell-padding: 3px;
  --tree-header-cell-indent: 3px;
  --list-item-min-height: 18px;
  --list-item-buttons-size: 18px;
  --table-header-cell-icon-width: 18px;
  --table-header-cell-icon-min-width: 18px;
  --table-header-cell-icon-button-padding: 0;
  --table-row-cell-img-margin-inline-start: 3px;
  --table-row-cell-button-margin-inline-start: 1px;
}

:root[uidensity="touch"] {
  --tree-header-table-height: 36px;
  --tree-header-cell-padding: 9px;
  --tree-header-cell-indent: -3px;
  --list-item-min-height: 32px;
  --table-header-cell-icon-width: 33px;
  --table-header-cell-icon-min-width: 33px;
  --table-row-cell-img-margin-inline-start: 11px;
  --table-row-cell-button-margin-inline-start: 9px;
}

@media not (prefers-contrast) {
  :root {
    --listbox-color: var(--color-gray-80);
    --listbox-selected-bg: var(--color-gray-20);
    --listbox-focused-selected-bg: var(--selected-item-color);
    --listbox-selected-color: var(--selected-item-text-color);
    --listbox-focused-selected-color: var(--selected-item-text-color);
    --listbox-hover: color-mix(in srgb, transparent 80%, var(--listbox-focused-selected-bg));
    --listbox-border-type: dashed;
    --tree-view-bg: var(--color-white);
    --tree-view-color: var(--color-ink-90);
    --tree-view-header-hover-bg: var(--color-gray-20);
    --tree-view-header-hover-active-bg: var(--color-gray-30);
    --tree-view-header-border-color: var(--color-gray-30);
    --tree-row-delete-button-color: var(--color-red-60);
  }

  @media (prefers-color-scheme: dark) {
    :root {
      --listbox-color: var(--color-gray-05);
      --listbox-selected-bg: var(--color-gray-70);
      --listbox-focused-selected-bg: var(--color-blue-60);
      --tree-view-bg: var(--color-gray-90);
      --tree-view-color: var(--color-gray-30);
      --tree-view-header-hover-bg: var(--color-gray-70);
      --tree-view-header-hover-active-bg: var(--color-gray-90);
      --tree-view-header-border-color: var(--splitter-color);
      --tree-row-delete-button-color: var(--color-red-40);
    }
  }
}

@media (prefers-contrast) {
  :root {
    --listbox-color: currentColor;
    --listbox-selected-color: SelectedItemText;
    --listbox-focused-selected-bg: SelectedItem;
    --listbox-selected-bg: color-mix(in srgb, transparent 80%, var(--listbox-focused-selected-bg));
    --listbox-selected-outline: 2px solid SelectedItem;
    --listbox-border-type: solid;
    --tree-view-bg: Field;
    --tree-view-color: FieldText;
    --tree-view-header-hover-bg: color-mix(in srgb, Field 70%, hsl(0, 0%, 50%));
    --tree-view-header-border-color: ThreeDShadow;
  }
}

:root[lwt-tree] {
  --listbox-selected-bg: color-mix(in srgb, transparent 70%, var(--sidebar-highlight-background-color));
  --listbox-hover: color-mix(in srgb, transparent 80%, var(--sidebar-highlight-background-color));
  --listbox-focused-selected-bg: var(--sidebar-highlight-background-color, var(--selected-item-color));
  --listbox-selected-color: var(--sidebar-highlight-text-color, var(--selected-item-text-color));
}

.tree-view-scrollable-container {
  display: flex;
  align-items: start;
  overflow-y: scroll;
  overscroll-behavior-y: none;
  height: 100%;
}

[is="tree-view-table"] img {
  -moz-context-properties: fill, stroke;
  fill: color-mix(in srgb, currentColor 20%, transparent);
  stroke: currentColor;
}

[is="tree-view-table-body"]:focus {
  outline: none;
}

[is="tree-view-table-body"] > * {
  cursor: default;
}

[is="tree-view-table-body"] > *:hover {
  background-color: var(--listbox-hover);
}

@media (prefers-contrast) {
  [is="tree-view-table-body"] > *:hover {
    outline: var(--listbox-selected-outline);
    outline-offset: -2px;
  }
}

[is="tree-view-table-body"] > .selected {
  background-color: var(--listbox-selected-bg);
}

[is="tree-view-table-body"]:focus > .selected,
[is="tree-view-table-body"]:focus-within > .selected {
  color: var(--listbox-selected-color);
}

[is="tree-view-table-body"]:focus > .current:not(.selected),
[is="tree-view-table-body"]:focus-within > .current:not(.selected) {
  outline: 1px var(--listbox-border-type) var(--listbox-focused-selected-bg);
  outline-offset: -1px;
}

[is="tree-view-table-body"]:focus > .selected,
[is="tree-view-table-body"]:focus-within > .selected,
[is="tree-view-table-body"] > .selected:focus-within {
  color: var(--listbox-selected-color);
  background-color: var(--listbox-focused-selected-bg);
}

.multi-selected [is="tree-view-table-body"] > .selected.current,
.multi-selected [is="tree-view-table-body"]:focus > .selected.current {
  outline: 1px var(--listbox-border-type) var(--listbox-selected-color);
  outline-offset: -1px;
}

[is="tree-view-table-body"]:focus > .selected img,
[is="tree-view-table-body"]:focus-within > .selected img,
[is="tree-view-table-body"] > .selected:focus-within img {
  fill: color-mix(in srgb, currentColor 40%, transparent);
  stroke: currentColor;
}

[is="tree-view-table-body"]:focus > .selected .tree-view-row-thread img,
[is="tree-view-table-body"]:focus-within > .selected .tree-view-row-thread img {
  stroke: var(--listbox-selected-color);
}

tr:is([is="thread-row"], [is="thread-card"]).selected .twisty {
  color: currentColor;
}

/* Resizable table columns */

table[is="tree-view-table"] {
  table-layout: fixed;
  flex: 1 0 100%;
  border-spacing: 0;
  line-height: 1;
  font-size: 1rem;
  background-color: var(--tree-view-bg);
  color: var(--tree-view-color);
}

body:not(.layout-table) thead[is="tree-view-table-header"] {
  display: none;
}

thead[is="tree-view-table-header"] {
  height: var(--tree-header-table-height);
  position: sticky;
  inset-inline: 0;
  inset-block-start: 0;
  z-index: 1;
}

thead[is="tree-view-table-header"]::after {
  content: '';
  position: absolute;
  inset-inline: 0;
  height: 0;
  z-index: 1;
  border-bottom: 1px solid var(--sidebar-border-color, var(--tree-view-header-border-color));
}

thead[is="tree-view-table-header"] hr[is="pane-splitter"] {
  position: absolute;
  inset-inline-end: 4px;
  inset-block: 3px;
}

thead[is="tree-view-table-header"] hr[is="pane-splitter"]:hover:not(:active,[disabled]) {
  background-color: var(--selected-item-color);
}

th[is="tree-view-table-header-cell"] {
  height: var(--tree-header-table-height);
  min-width: 7ch;
  padding: 0;
  position: relative;
  overflow: hidden;
  background-color: var(--tree-view-bg);
}

th[is="tree-view-table-header-cell"][data-type="icon"] {
  width: var(--table-header-cell-icon-width);
  min-width: var(--table-header-cell-icon-min-width);
}

th[is="tree-view-table-header-cell"][data-type="icon"] button {
  padding: var(--table-header-cell-icon-button-padding, var(--tree-header-cell-padding));
}

th[is="tree-view-table-header-cell"][data-type="icon"] img {
  display: block;
  margin-inline: auto;
}

th[is="tree-view-table-header-cell"] hr[is="pane-splitter"] {
  border-inline-start-style: none !important;
  border-inline-end-style: solid;
}

/* Select column */

#selectColButton {
  padding-inline: 0;
}

:is(.tree-view-header-select, .tree-view-row-select) img {
  color: var(--tree-view-color);
  content: var(--icon-checkbox);
  -moz-context-properties: fill, fill-opacity, stroke, stroke-opacity;
  fill: currentColor;
  fill-opacity: 0;
  stroke-opacity: 0;
}

[is="tree-view-table-body"]:focus >
  .selected :is(.tree-view-header-select, .tree-view-row-select) img,
[is="tree-view-table-body"]:focus-within >
  .selected :is(.tree-view-header-select, .tree-view-row-select) img,
[is="tree-view-table-body"] > .selected:focus-within
  :is(.tree-view-header-select, .tree-view-row-select) img {
  color: currentColor;
}

.tree-view-row-select img {
  display: block;
  margin-inline: auto;
}

.some-selected .tree-view-header-select img {
  stroke-opacity: 1;
}

:is(.all-selected, .selected) :is(.tree-view-header-select, .tree-view-row-select) img {
  fill-opacity: 1;
}

[is="tree-view-table-body"]:focus .selected > .tree-view-row-select img,
[is="tree-view-table-body"]:focus-within .selected > .tree-view-row-select img,
[is="tree-view-table-body"] .selected:focus-within > .tree-view-row-select img {
  fill: currentColor;
}

/* Delete column */

.tree-table-cell-container button.tree-view-header-delete {
  text-align: center;
}

.tree-view-row-delete button {
  color: var(--tree-view-color);
  opacity: 0.8;
}

.tree-view-row-delete button:hover {
  opacity: 1;
  color: var(--tree-row-delete-button-color);
}

[is="tree-view-table-body"]:focus .selected .tree-view-row-delete button,
[is="tree-view-table-body"]:focus-within .selected .tree-view-row-delete button,
[is="tree-view-table-body"] .selected:focus-within .tree-view-row-delete button {
  color: currentColor;
}

.tree-view-header-delete img,
.tree-view-row-delete img {
  content: var(--icon-trash-sm);
  pointer-events: none;
}

.tree-table-cell {
  position: absolute;
  inset-block: 0;
  inset-inline: 0 1px;
}

th[data-resizable="false"] .tree-table-cell {
  inset-inline: 0;
}

.tree-table-cell-container button {
  font-size: 1rem;
  font-weight: normal;
  overflow: hidden;
  text-overflow: ellipsis;
  text-indent: var(--tree-header-cell-indent);
  white-space: nowrap;
  text-align: start;
  padding: var(--tree-header-cell-padding);
  margin: 0;
  width: 100%;
  height: 100%;
  min-width: auto;
  min-height: auto;
  color: inherit;
  border: none;
  border-radius: 0;
  background-color: transparent;
  background-position: right 6px center;
  background-repeat: no-repeat;
  -moz-context-properties: stroke;
  stroke: currentColor;
}

.tree-table-cell-container button:hover {
  background-color: var(--tree-view-header-hover-bg);
}

.tree-table-cell-container button:hover:active {
  background-color: var(--tree-view-header-hover-active-bg);
}

.tree-table-cell-container button:focus-visible {
  outline: 2px solid var(--selected-item-color);
  outline-offset: -2px;
  border-radius: var(--button-border-radius);
}

.tree-table-cell-container button.sorting {
  background-image: var(--icon-nav-up-sm);
  padding-inline-end: 18px;
}

.tree-table-cell-container button.sorting.descending {
  background-image: var(--icon-nav-down-sm);
}

@media (-moz-platform: linux) {
  .tree-table-cell-container button.sorting {
    background-image: var(--icon-nav-down-sm);
  }

  .tree-table-cell-container button.sorting.descending {
    background-image: var(--icon-nav-up-sm);
  }
}

th[data-type="icon"] .tree-table-cell-container button.sorting {
  background-image: none;
  padding-inline-end: var(--tree-header-cell-padding);
}

th[is="tree-view-table-column-picker"] {
  position: relative;
  width: 25px;
  min-width: 25px;
  padding: 0;
  background-color: var(--tree-view-bg);
}

@media (-moz-overlay-scrollbars) {
  th[is="tree-view-table-column-picker"] {
    padding-inline-end: env(scrollbar-inline-size);
  }
}

.button-column-picker {
  position: absolute;
  inset: 0;
}

.button-column-picker img {
  content: var(--icon-column-menu);
  margin-inline: 0;
}

/* Table body */

table[is="tree-view-table"] td {
  max-width: 0;
  height: inherit;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0 6px;
  position: relative;
  user-select: none;
  box-sizing: border-box;
}

table[is="tree-view-table"] td:is(.button-column, .tree-view-row-select) {
  padding: 0;
  text-align: center;
}

table[is="tree-view-table"] td.button-column[colspan="2"] {
  text-align: start;
}

table[is="tree-view-table"] td.button-column[colspan="2"] img {
  margin-inline-start: var(--table-row-cell-img-margin-inline-start);
}

#threadTree table[is="tree-view-table"] td.button-column[colspan="2"] button {
  margin-inline-start: var(--table-row-cell-button-margin-inline-start);
}

#threadTree table[is="tree-view-table"] td.button-column[colspan="2"] button.tree-button-delete {
  margin-inline-start: calc(var(--table-row-cell-button-margin-inline-start) + 2px);
}

table[is="tree-view-table"] td div:not(.recipient-avatar) {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Placeholder */

slot[name="placeholders"] {
  position: absolute;
  display: none;
  box-sizing: border-box;
  inset: 120px 0 auto;
  padding: 0 40px;
  opacity: 0.5;
  text-align: center;
}

slot[name="placeholders"].show {
  display: block;
}

slot[name="placeholders"] > div {
  font-size: 1.5rem;
  line-height: 1.2;
  font-weight: 600;
  margin-block-end: 12px;
  text-shadow: 0 1px 0 var(--sidebar-background-color, var(--tree-view-bg));
}

slot[name="placeholders"] div::before {
  content: "";
  display: block;
  height: 32px;
  margin-block-end: 9px;
  background-position: center top;
  background-size: contain;
  background-repeat: no-repeat;
  -moz-context-properties: fill, stroke, fill-opacity;
  fill: color-mix(in srgb, currentColor 20%, transparent);
  stroke: currentColor;
  fill-opacity: var(--toolbarbutton-icon-fill-opacity);
}

/* Transitions and animations */

@media (prefers-reduced-motion: no-preference) {
  .tree-view-scrollable-container {
    scroll-behavior: smooth;
  }

  thead[is="tree-view-table-header"] hr[is="pane-splitter"] {
    transition: background-color var(--transition-duration) var(--transition-timing);
  }

  table[is="tree-view-table"] tbody tr {
    transition:
      color var(--transition-duration) var(--transition-timing),
      background-color var(--transition-duration) var(--transition-timing);
  }

  table[is="tree-view-table"] tbody tr img {
    transition:
      color var(--transition-duration) var(--transition-timing),
      fill var(--transition-duration) var(--transition-timing),
      stroke var(--transition-duration) var(--transition-timing);
  }
}

:is(ul, ol):is([role="tree"],
[role="group"]) li > div {
  min-height: var(--list-item-min-height);
}

.no-overscroll {
  overscroll-behavior-y: none;
}

/* Drag and Drop */

th.column-dragging {
  opacity: 0.7;
  z-index: 2;
}