:root {
  --deleted-node-color: #dadada;
  --selected-node-color: #ffffff;
  --selected-node-bg-color: #ff0000;
  --hover-node-bg-color: rgba(0, 0, 0, 0.1);
}

/* layout */

.layout {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
}

.layout > .toolbar {
  flex: none;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #ececec;
}

.layout > .toolbar .tools {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 0px 20px;
}

.layout > .content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.layout > .content > .editor-area,
.layout > .content > .graph-view {
  flex: 1;
}

.layout > .content > .graph-view {
  display: flex;
  position: relative;
  border-top: 1px solid #ececec;
}

.layout > .content > .graph-view > .graph-area:first-child {
  border-right: 1px solid #ececec;
}

.layout > .content > .editor-area {
  display: flex;
  flex-direction: row;
  position: relative;
  height: 300px;
  flex: none;
}

.layout > .content > .editor-area > .codemirror-area,
.layout > .content > .editor-area > .data-area {
  flex: 1 1 auto;
  width: 50%;
  position: relative;
}

.layout > .content > .editor-area > .codemirror-area {
  border-right: 1px solid #ececec;
}

.layout > .content > .editor-area .CodeMirror {
  height: 100%;
}

.layout > .content > .editor-area > .data-area {
  display: flex;
}

.layout > .content > .editor-area > .data-area > .text-view-area {
  flex: 1 1 auto;
  display: flex;
  height: 100%;
}

/* toolbar > userlist */

#users-holder {
  display: flex;
  gap: 10px;
}

.user-info {
  --client-background-color: var(--client-color, #000);
  background-color: var(--client-background-color);
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0px 1px;
  width: 30px;
  height: 30px;
  box-sizing: border-box;
  border-radius: 50%;
  text-transform: uppercase;
  color: white;
  cursor: pointer;
}

/* toolbar > hide deleted node */

.text-view-area.hide-deleted-node .char-item.deleted,
.text-view-area.hide-deleted-node .structure-item.deleted,
#splaytree-log-holder.hide-deleted-node .node-item.is-removed,
#llrbtree-log-holder.hide-deleted-node .node-item.is-removed {
  display: none;
}

/* toolbar > hide view */

.layout > .content.hide-splay-tree.hide-llrb-tree > .editor-area,
.layout > .content.hide-splay-tree.hide-llrb-tree .tabcontent {
  height: 100%;
}

/* body > top > center(tab)  */

.text-view-area .tab {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
}

.text-view-area .tab-header {
  flex: none;
  display: flex;
  height: 30px;
  border-bottom: 1px solid #ececec;
}

.text-view-area .tab-body {
  flex: 1;
  display: flex;
}

.text-view-area .tab-button {
  margin-right: 3px;
  border: none;
}

.text-view-area .tab-button.active {
  background-color: #ccc;
}

.text-view-area .tabcontent {
  display: none;
  height: 270px;
  width: 100%;
  overflow: auto;
}

.text-view-area .tabcontent.active {
  display: block;
}

/* body > top > center(tab) > text */

.text-view-area .char-item {
  position: relative;
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px;
  min-height: 20px;
  border-bottom: 1px solid #e5e5e5;
  vertical-align: bottom;
  font-size: 14px;
  cursor: pointer;
}

.text-view-area .char-item:hover {
  background-color: var(--hover-node-bg-color) !important;
}

.text-view-area .char-item.selected {
  color: var(--selected-node-color);
  background-color: var(--selected-node-bg-color);
}

.text-view-area .char-item.deleted:not(.selected) {
  text-decoration: line-through;
  background-color: var(--deleted-node-color);
}

.text-view-area .char-item .time {
  display: none;
}

/* body > top > center(tab) > structure data */

.text-view-area .structure-item {
  --structure-background-color: var(--client-color, white);
  display: flex;
  position: relative;
  padding: 2px;
  cursor: pointer;
  font-size: 12px;
}

.text-view-area .structure-item > .icon {
  background-color: var(--structure-background-color);
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  margin-right: 5px;
  box-sizing: border-box;
  padding: 2px;
  border-radius: 50%;
}

.text-view-area .structure-item.deleted {
  text-align: right;
  background-color: var(--deleted-node-color);
}

.text-view-area .structure-item.selected {
  color: var(--selected-node-color);
  background-color: var(--selected-node-bg-color);
}

.text-view-area .structure-item:hover {
  background-color: var(--hover-node-bg-color) !important;
}

/* body > top > center(tab) > structure text */

.text-view-area #structure-text-holder {
  padding: 10px;
  width: 100%;
  font-size: 12px;
}

/* body > top > right(selected node info) */

.text-view-area .selected-node-info-area {
  flex: none;
  display: flex;
  flex-direction: column;
  width: 300px;
}

.text-view-area .selected-node-info-area .title {
  display: flex;
  align-items: center;
  margin: 0px;
  padding: 10px 10px;
  height: 30px;
  border-bottom: 1px solid #ececec;
  border-left: 1px solid #ececec;
  font-size: 12px;
  font-weight: bold;
}

.text-view-area .selected-node-info {
  flex: 1;
  width: 100%;
  border-left: 1px solid #ececec;
  font-size: 14px;
}

.text-view-area .selected-node-info .property-item-view {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  text-align: left;
}

.text-view-area .selected-node-info .property-item-view label {
  flex: none;
  width: 72px;
  text-align: left;
  font-weight: bold;
}

/* body > bottom > tree graph  */

.graph-view .graph-area {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.graph-view .title {
  display: flex;
  align-items: center;
  margin: 0px;
  padding: 10px 20px;
  border-bottom: 1px solid #ececec;
  font-weight: bold;
}

.graph-view .badge {
  margin-left: 10px;
  font-weight: 400;
  font-size: 12px;
}

.graph-view .tree-area {
  flex: 1;
  overflow: auto;
  position: relative;
  box-sizing: border-box;
}

.tree-area .node-item {
  display: inline-block;
  padding: 2px;
  box-sizing: border-box;
  cursor: pointer;
  position: absolute;
  z-index: 10;
  text-align: center;
}

.tree-area .node-item .inner-description {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  box-sizing: border-box;
  border-color: var(--ticker-color, black);
  border-width: 2px;
  border-style: solid;
  margin-bottom: 10px;
  position: relative;
  margin-left: 8px;
  margin-right: 8px;
  width: 64px;
  height: 40px;
  contain: size;
  background-color: white;
}

.tree-area .node-item.selected .inner-description {
  border-color: var(--selected-node-bg-color) !important;
  background-color: var(--selected-node-bg-color) !important;
  color: var(--selected-node-color) !important;
}

.tree-area .node-item.is-removed .inner-description {
  background-color: var(--deleted-node-color);
  border-width: 1px;
}

.tree-area .node-item .inner-description .key-area {
  font-size: 10px;
  padding: 4px;
  box-sizing: border-box;
  flex: 1;
}

.tree-area .node-item .inner-description .value-area {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  height: 100%;
  box-sizing: border-box;
  width: 100%;
  border-top: 1px solid black;
  font-size: 11px;
}

.tree-area .node-item .inner-description .value-area .value {
  flex: 1;
  text-align: center;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  max-width: 40px;
}

.tree-area .node-item .inner-description .value-area .weight {
  flex: none;
  border-right: 1px solid black;
  box-sizing: border-box;
  padding: 0px 2px;
  display: flex;
  align-items: center;
  height: 100%;
}

.tree-area .node-item .inner-description .prev-view,
.tree-area .node-item .inner-description .next-view {
  position: absolute;
  display: none;
  width: 10px;
  height: 100%;
  align-items: center;
  justify-content: center;
  color: black;
}

.tree-area .node-item .inner-description .prev-view {
  top: 50%;
  left: -12px;
  transform: translate(0, -50%);
}

.tree-area .node-item .inner-description .next-view {
  top: 50%;
  right: -12px;
  transform: translate(0, -50%);
}

.tree-area .node-item .inner-description:hover .prev-view,
.tree-area .node-item .inner-description:hover .next-view {
  display: flex;
}

.tree-area .line-holder {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 100px;
  height: 100px;
}

.tree-area .line-holder svg {
  display: block;
  position: absolute;
  left: 0px;
  top: 0px;
  right: 0px;
  bottom: 0px;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.tree-area .line-holder path {
  stroke: black;
}