@rp-base-font-size: 12px;
@rp-small-font-size: 10px;
@rp-icon-large-size: 18px;

@rp-bg-blue: #dadfed;
@rp-bg-dim-blue: #fafafa;
@rp-highlight-blue: #8a96b5;

@rp-border-grey: #d9d9d9;

@rp-green: #2c8e30;
@rp-red: #c5060b;
@rp-yellow: #f3b111;
@rp-grey: #aaaaaa;

@rp-type-blue: #6b7797;
@rp-type-darkgrey: #3f3f3f;

@rp-entry-ribbon-width: 4px;
@rp-entry-arrow-width: 6px;
@rp-semibold-weight: 600;
@review-panel-width: 230px;
@review-off-width: 22px;

@rp-entry-animation-speed: 0.3s;

.rp-button() {
  display: block; // IE doesn't do flex with inline items.
  background-color: @rp-highlight-blue;
  color: #fff;
  text-align: center;
  line-height: 1.3;
  user-select: none;
  border: 0;

  &:hover,
  &:focus {
    outline: 0;
    background-color: darken(@rp-highlight-blue, 5%);
    text-decoration: none;
    color: #fff;
  }

  &[disabled] {
    background-color: tint(@rp-highlight-blue, 50%);

    &:hover,
    &:focus {
      background-color: tint(@rp-highlight-blue, 50%);
    }
  }
}

.rp-collapse-arrow() {
  display: inline-flex;
  transform: rotateZ(0deg);
  transition: transform 0.15s ease;
  &-on {
    transform: rotateZ(-90deg);
  }
}

.review-panel-toolbar {
  display: none;

  .rp-size-expanded & {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5px;
  }

  position: relative;
  border-bottom: 1px solid @rp-border-grey;
  background-color: @rp-bg-dim-blue;
  text-align: center;
  z-index: 3;
  flex-basis: 32px;
  flex-shrink: 0;
}

.review-panel-toolbar-label {
  cursor: pointer;
  text-align: right;
  flex-grow: 1;
}

.review-panel-toolbar-icon-on {
  margin-right: 5px;
  color: @ol-green;
}

.review-panel-toolbar-label-disabled {
  cursor: auto;
  margin-right: 5px;
}

.rp-tc-state {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  overflow: hidden;
  list-style: none;
  padding: 0 5px;
  margin: 0;
  border-bottom: 1px solid @rp-border-grey;
  background-color: @rp-bg-dim-blue;
  text-align: left;
}

.rp-tc-state-collapse {
  .rp-collapse-arrow;
  margin-left: 5px;
}

.rp-tc-state-item {
  display: flex;
  align-items: center;
  padding: 3px 0;

  &:last-of-type {
    padding-bottom: 5px;
  }
}

.rp-tc-state-separator {
  border-bottom: 1px solid @rp-border-grey;
}

.rp-tc-state-item-everyone {
  border-bottom: 1px solid @rp-border-grey;
}

.rp-tc-state-item-name {
  flex-grow: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: @rp-semibold-weight;
}

.rp-tc-state-item-name-disabled {
  opacity: 0.35;
}

.rp-entry-list {
  display: none;
  width: 100%;

  .rp-size-expanded &,
  .rp-size-mini & {
    display: block;
  }

  .rp-state-overview & {
    flex-grow: 2;
    overflow-y: auto;
  }
}

.rp-entry-indicator {
  display: none;
  z-index: 2; // above .review-panel-toggler

  .rp-size-mini & {
    display: block;
  }

  .rp-floating-entry & {
    display: block;
    position: static;
    width: @review-off-width - 4px;
  }

  .rp-size-mini &-add-comment {
    display: none;
  }

  position: absolute;
  left: 2px;
  right: 2px;
  text-align: center;
  background-color: @rp-highlight-blue;
  border-radius: 3px;
  color: #fff;
  cursor: pointer;
  transition:
    top @rp-entry-animation-speed,
    left 0.1s,
    right 0.1s;

  .no-animate & {
    transition:
      left 0.1s,
      right 0.1s;
  }

  &-focused {
    left: 0px;
    right: 4px;
    z-index: 1;
  }
}

.rp-entry-wrapper {
  &:hover .rp-entry-insert,
  &:hover .rp-entry-delete,
  &:hover .rp-entry-aggregate,
  &:hover .rp-entry-comment {
    display: block;
  }

  &.rp-entry-hidden {
    display: none;
  }
}

.rp-entry {
  .rp-state-current-file & {
    position: absolute;
    width: @review-panel-width;
  }

  .rp-state-current-file-mini &,
  .rp-floating-entry & {
    left: @review-off-width + @rp-entry-arrow-width;
    box-shadow: 0 0 10px 5px rgba(0, 0, 0, 0.2);
    z-index: 1;

    &::before {
      content: '';
      position: absolute;
      top: -(@review-off-width + @rp-entry-arrow-width);
      right: -(@review-off-width + @rp-entry-arrow-width);
      bottom: -(@review-off-width + @rp-entry-arrow-width);
      left: -(2 * @rp-entry-arrow-width + 2);
      z-index: -1;
    }

    &::after {
      .triangle(
        left,
        @rp-entry-arrow-width,
          @rp-entry-arrow-width * 1.5,
        inherit
      );
      top: (@review-off-width / 2) - @rp-entry-arrow-width;
      left: -(@rp-entry-ribbon-width + @rp-entry-arrow-width);
      content: '';
    }
  }

  .rp-state-current-file-mini & {
    display: none;
  }

  .rp-floating-entry & {
    position: absolute;
    width: @review-panel-width;
    left: @review-off-width + @rp-entry-arrow-width;
    top: 0;
  }

  .rp-state-current-file-mini.rp-layout-left &,
  .rp-floating-entry-layout-left & {
    border-left-width: 0;
    border-right-width: @rp-entry-ribbon-width;
    border-right-style: solid;

    &::before {
      left: -(@review-off-width + @rp-entry-arrow-width);
    }

    &::after {
      .triangle(
        right,
        @rp-entry-arrow-width,
          @rp-entry-arrow-width * 1.5,
        inherit
      );
      right: -(@rp-entry-ribbon-width + @rp-entry-arrow-width);
      left: auto;
    }
  }

  .rp-state-current-file-mini.rp-layout-left & {
    left: auto;
    right: @review-off-width + @rp-entry-arrow-width;

    &::before {
      right: -(2 * @rp-entry-arrow-width + 2);
    }
  }

  .rp-floating-entry-layout-left & {
    left: -(@review-panel-width + @rp-entry-arrow-width + 2);

    &::before {
      right: -(2 * @rp-entry-arrow-width);
    }
  }

  .rp-state-current-file-expanded & {
    visibility: hidden;
    left: 5px;
    right: 5px;
    width: auto;

    &-focused {
      left: -2px;
      right: 12px;
      z-index: 1;
    }

    &-add-comment {
      right: auto;

      &.rp-entry-adding-comment {
        right: 5px;
      }
    }

    &-bulk-actions {
      right: auto;
    }
  }

  .rp-state-overview & {
    border-radius: 0;
    border-bottom: solid 1px @rp-border-grey;
    cursor: pointer;
  }

  .resolved-comments-dropdown & {
    position: static;
    margin-bottom: 5px;
  }

  border-left: solid @rp-entry-ribbon-width transparent;
  border-radius: 3px;
  background-color: #fff;
  transition:
    top @rp-entry-animation-speed,
    left 0.1s,
    right 0.1s;

  .no-animate & {
    transition:
      left 0.1s,
      right 0.1s;
  }

  &-insert,
  &-aggregate {
    border-color: @rp-green;
  }

  &-delete {
    border-color: @rp-red;
  }

  &-comment {
    border-color: @rp-yellow;
  }

  &-comment-resolving {
    top: 4px;
    left: 6px;
    opacity: 0;
    z-index: 3;
    transform: scale(0.1);
    transform-origin: 0 0;
    transition:
      top 0.35s ease-out,
      left 0.35s ease-out,
      transform 0.35s ease-out,
      opacity 0.35s ease-out 0.2s;
  }

  &-comment-resolved {
    border-color: @rp-grey;
    background-color: #efefef;
  }

  &-add-comment {
    background-color: transparent;
    right: auto;
    border-left-width: 0;

    &.rp-entry-adding-comment {
      background-color: #fff;
      right: 5px;
      border-left-width: 3px;
      border-left-color: @rp-yellow;
    }
  }

  &-bulk-actions {
    background-color: transparent;
    right: auto;
    border-left-width: 0;
  }
}

.rp-entry-body {
  display: flex;
  align-items: center;
  padding: 4px 5px;
}

.rp-entry-action-icon {
  font-size: @rp-icon-large-size;
  padding: 0 3px;
  line-height: 0;

  .rp-state-overview & {
    display: none;
  }
}

.rp-entry-details {
  line-height: 1.4;
  margin-left: 5px;
  // We need to set any low-enough flex base size (0px), making it growable (1) and non-shrinkable (0).
  // This is needed to ensure that IE makes the element fill the available space.
  flex: 1 0 1px;
  overflow-x: auto;

  .rp-state-overview & {
    margin-left: 0;
  }
}

.rp-entry-metadata {
  font-size: @rp-small-font-size;
}

.rp-entry-metadata-element {
  display: inline-block;
}

.rp-entry-user {
  font-weight: @rp-semibold-weight;
  font-style: normal;
}

.rp-comment-actions {
  a {
    color: @rp-type-blue;
  }
}

.rp-content-highlight {
  color: @rp-type-darkgrey;
  font-weight: @rp-semibold-weight;
  text-decoration: none;

  del& {
    text-decoration: line-through;
  }
}

.rp-entry-actions {
  display: flex;

  .rp-state-overview .rp-entry-list & {
    display: none;
  }
}

.rp-entry-button {
  .rp-button();
  flex: 1 1 50%;
  border-right: solid 1px #fff;
  padding: 2px 0;

  &:last-child {
    border-bottom-right-radius: 3px;
    border-right-width: 0;
  }

  .rp-state-current-file-mini.rp-layout-left &,
  .rp-floating-entry-layout-left & {
    &:first-child {
      border-bottom-left-radius: 3px;
    }

    &:last-child {
      border-bottom-right-radius: 0;
    }
  }
}

.rp-comment {
  margin: 2px 5px;
  padding-bottom: 3px;
  line-height: 1.4;
  border-bottom: solid 1px @rp-border-grey;

  &:last-child {
    margin-bottom: 2px;
    border-bottom-width: 0;
  }

  .rp-state-overview .rp-entry-list & {
    margin: 4px 5px;

    &:first-child {
      margin-top: 0;
      padding-top: 4px;
    }
  }
}

.rp-comment-content {
  margin: 0;
  color: @rp-type-darkgrey;
  overflow-x: auto; // Long words, like links can overflow without this.
  white-space: pre-wrap;
}

.rp-comment-resolver {
  color: @rp-type-blue;
}

.rp-comment-resolver-content {
  font-style: italic;
  margin: 0;
}

.rp-comment-reply {
  padding: 0 5px;
}

.rp-add-comment-btn,
.rp-bulk-actions-btn {
  .rp-button();
  display: inline-block;
  padding: 5px 10px;
  border-radius: 3px;

  .rp-in-editor-widgets & {
    display: block;
    white-space: nowrap;
    border-radius: 0;

    &:last-child {
      border-bottom-left-radius: 3px;
    }
  }
}

.rp-bulk-actions-btn {
  border-radius: 0;

  &:first-child {
    border-top-left-radius: 3px;
    border-bottom-left-radius: 3px;
  }

  &:last-child {
    border-top-right-radius: 3px;
    border-bottom-right-radius: 3px;
    margin-left: 1px;
  }
}

.rp-new-comment {
  padding: 5px;
}

.rp-comment-input {
  width: 100%;
  font-size: @rp-base-font-size;
  padding: 2px 5px;
  border-radius: 3px;
  border: solid 1px @rp-border-grey;
  resize: vertical;
  color: @rp-type-darkgrey;
  background-color: #fff;
  margin-top: 3px;
  overflow-x: hidden;
  min-height: 3em;
  max-height: 400px;
}

.rp-icon-delete {
  display: inline-block;
  line-height: 1;
  font-style: normal;
  font-size: 0.8em;
  text-decoration: line-through;
  font-weight: @rp-semibold-weight;

  &::before {
    content: 'Ab';
  }
}

.rp-resolved-comment {
  border-left: solid @rp-entry-ribbon-width @rp-yellow;
  border-radius: 3px;
  background-color: #fff;
  margin-bottom: 5px;
}

.rp-resolved-comment-context {
  background-color: lighten(@rp-yellow, 35%);
  padding: 4px 5px;
}

.rp-resolved-comment-context-file {
  font-weight: @rp-semibold-weight;
}

.rp-resolved-comment-context-quote {
  color: #000;
  font-family: @font-family-monospace;
  margin: 0;
}

.rp-entry-callout {
  transition:
    top @rp-entry-animation-speed,
    height @rp-entry-animation-speed;

  .rp-state-current-file & {
    position: absolute;
    border-top: 1px solid grey;
    border-right: 1px dashed grey;

    &::after {
      content: '';
      position: absolute;
      top: -1px;
      left: 3px;
      bottom: 0;
      border-bottom: 1px solid grey;
    }
  }

  .rp-state-current-file-expanded & {
    width: 3px;

    &::after {
      width: 3px;
    }
  }

  .rp-state-current-file-mini & {
    width: 1px;

    &::after {
      width: 1px;
    }
  }

  .rp-state-overview & {
    display: none;
  }

  .rp-state-current-file &-inverted {
    border-top: none;
    border-bottom: 1px solid grey;

    &::after {
      top: 0px;
      bottom: -1px;
      border-top: 1px solid grey;
      border-bottom: none;
    }
  }

  .rp-state-current-file &-insert {
    border-color: @rp-green;

    &::after {
      border-color: @rp-green;
    }
  }

  .rp-state-current-file &-delete {
    border-color: @rp-red;

    &::after {
      border-color: @rp-red;
    }
  }

  .rp-state-current-file &-comment {
    border-color: @rp-yellow;

    &::after {
      border-color: @rp-yellow;
    }
  }

  .rp-size-mini &-add-comment {
    display: none;
  }
}

.rp-overview-file-header {
  padding: 2px 5px;
  border-top: solid 1px @rp-border-grey;
  border-bottom: solid 1px @rp-border-grey;
  background-color: @rp-bg-dim-blue;
  margin-top: 10px;
  font-weight: @rp-semibold-weight;
  text-align: center;
  cursor: pointer;
}

.rp-overview-file-num-entries {
  font-weight: normal;
  font-size: 0.9em;
}

.rp-overview-file-header-collapse {
  .rp-collapse-arrow;
  float: left;
}

.rp-overview-file-entries {
  overflow: hidden;
}

.rp-comment-wrapper {
  transition: 0.35s opacity ease-out 0.2s;

  &-resolving {
    opacity: 0;
  }
}

.rp-nav {
  display: none;
  flex-shrink: 0;

  .rp-size-expanded & {
    display: flex;
  }

  .rp-state-current-file & {
    position: absolute;
    bottom: 0;
  }

  width: 100%;
  font-size: @rp-icon-large-size;
  text-align: center;
  background-color: @rp-bg-dim-blue;
  border-top: solid 1px @rp-border-grey;
  z-index: 2;
}

.rp-nav-item {
  display: block;
  color: lighten(@rp-type-blue, 25%);
  flex: 0 0 50%;
  border-top: solid 3px transparent;
  border-right: 0;
  border-bottom: 0;
  border-left: 0;
  background: none;
  padding-bottom: 2px;

  &:hover,
  &:focus {
    text-decoration: none;
    color: @rp-type-blue;
  }

  &-active {
    color: @rp-type-blue;
    border-top: solid 3px @rp-highlight-blue;
  }
}

.rp-nav-label {
  display: block;
  font-size: @rp-base-font-size;
}

.review-icon {
  display: inline-block;
  background: url('../../../../public/img/ol-icons/review-icon-dark-theme.svg')
    top/30px no-repeat;
  width: 30px;

  &::before {
    content: '\00a0'; // Non-breakable space. A non-breakable character here makes this icon work like font-awesome.
  }
}

button when (@is-overleaf-light = true) {
  .review-icon {
    background: url('../../../../public/img/ol-icons/review-icon-light-theme.svg')
      top/30px no-repeat;
  }

  &.active,
  &:active {
    .review-icon {
      background: url('../../../../public/img/ol-icons/review-icon-dark-theme.svg')
        top/30px no-repeat;
    }
  }
}

.resolved-comments-toggle {
  background-color: @gray-lightest;
  font-size: 14px;
  color: lighten(@rp-type-blue, 25%);
  border: solid 1px @rp-border-grey;
  border-radius: 3px;
  padding: 0 4px;
  display: block;
  height: 22px;
  width: 22px;
  line-height: 1.4;

  &:hover,
  &:focus {
    text-decoration: none;
    color: @rp-type-blue;
  }
}

.resolved-comments-backdrop {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;

  &-visible {
    display: block;
  }
}

.resolved-comments-dropdown {
  display: none;
  position: absolute;
  width: 300px;
  left: -150px;
  max-height: ~'calc(100vh - 100px)';
  margin-top: @rp-entry-arrow-width * 1.5;
  margin-left: 1em;
  background-color: @rp-bg-blue;
  text-align: left;
  align-items: stretch;
  justify-content: center;
  border-radius: 3px;
  box-shadow: 0 0 20px 10px rgba(0, 0, 0, 0.3);
  z-index: 1;

  &::before {
    content: '';
    .triangle(
      top,
        @rp-entry-arrow-width * 3,
        @rp-entry-arrow-width * 1.5,
      @rp-bg-blue
    );
    top: -@rp-entry-ribbon-width * 2;
    left: 50%;
    margin-left: -@rp-entry-arrow-width * 0.75;
  }

  &-open {
    display: flex;
  }
}

.resolved-comments-scroller {
  flex: 0 0 auto; // Can't use 100% in the flex-basis key here, IE won't account for padding.
  width: 100%; // We need to set the width explicitly, as flex-basis won't work.
  max-height: ~'calc(100vh - 100px)'; // We also need to explicitly set the max-height, IE won't compute the flex-determined height.
  padding: 5px;
  overflow-y: auto;
}

.rp-collapse-toggle {
  .btn-inline-link;
  color: @rp-type-blue;
  font-weight: @rp-semibold-weight;

  &:hover,
  &:focus {
    color: darken(@rp-type-blue, 5%);
    text-decoration: none;
  }
}

.rp-track-changes-indicator {
  display: block;
  padding: 5px 10px;
  background-color: rgba(240, 240, 240, 0.9);
  color: @rp-type-blue;
  text-align: center;
  border-bottom-left-radius: 3px;
  white-space: nowrap;

  &.rp-track-changes-indicator-on-dark {
    background-color: rgba(88, 88, 88, 0.8);
    color: #fff;

    &:hover,
    &:focus {
      background-color: rgba(88, 88, 88, 1);
      color: #fff;
    }
  }

  &:hover,
  &:focus {
    outline: 0;
    text-decoration: none;
    background-color: rgba(240, 240, 240, 1);
    color: @rp-type-blue;
  }
}

.review-panel-toggler {
  display: none;
  position: absolute;
  top: 0;
  bottom: 0;
  width: 10px;
  opacity: 0.5;
  color: @rp-highlight-blue;
  z-index: 1;
  background-color: transparent;
  transition: background 0.1s;
  flex-direction: column;
  padding: 0;
  border: 0;

  .rp-size-mini &,
  .rp-size-expanded & {
    display: flex;
  }

  .rp-size-expanded & {
    .review-panel-toggler-icon .fa {
      transform: scale(0.7) rotate(180deg);
    }
  }

  &:hover,
  &:focus {
    color: @rp-highlight-blue;
    background-color: #fff;
  }

  .review-panel-toggler-icon {
    position: sticky;
    top: 50%;
    bottom: 50%;
    width: 100%;

    .fa {
      font-size: 14px;
      transform: scale(0.7);
    }
  }
}

.review-panel {
  position: relative;
  z-index: 6;
  flex-shrink: 0;

  background-color: @rp-bg-blue;
  border-left: solid 0 @rp-border-grey;
  font-family: @font-family-base;
  line-height: @line-height-base;
  font-size: @rp-base-font-size;
  color: @rp-type-blue;
  box-sizing: content-box;

  .rp-size-expanded & {
    display: flex;
    flex-direction: column;
    width: @review-panel-width;
    overflow: visible;
    border-left-width: 1px;
  }

  .rp-size-mini & {
    width: @review-off-width;
    z-index: 6;
    border-left-width: 1px;
  }

  .review-panel-toolbar-collapse-button {
    border: none;
    background: none;
    padding: 0;
  }

  &.rp-current-file-container {
    display: none;

    .rp-size-mini &,
    .rp-size-expanded & {
      display: block;
    }

    .review-panel-toolbar {
      position: sticky;
      top: 0;
    }

    .rp-nav {
      position: sticky;
      bottom: 0;
    }
  }

  .rp-entry-list-react {
    position: relative;
    overflow: hidden;

    .rp-size-mini & {
      overflow: visible;
    }
  }

  .rp-state-current-file & {
    .review-panel-tools {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: absolute;
      top: 0;
      bottom: 0;
      left: 0;
      right: 0;
    }
  }

  .rp-state-overview & {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    height: 100%;
  }
}

.rp-floating-entry {
  position: absolute;
  font-size: @rp-base-font-size;
  color: @rp-type-blue;
}

.rp-floating-entry,
.review-panel {
  .rp-entry-metadata {
    button {
      padding: 0;
      border: 0;
      background-color: transparent;
      color: @ol-blue;

      &:hover,
      &:focus {
        text-decoration: underline;
      }
    }
  }
}

.rp-in-editor-widgets {
  position: sticky;
  top: 0;
  right: 0;
  font-size: 11px;
  z-index: 2;
  font-family: @font-family-sans-serif;

  .rp-in-editor-widgets-inner {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    flex-direction: column;
  }

  .rp-track-changes-indicator {
    border: 0;
  }
}

.track-changes-indicator-circle {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 100%;
  background-color: @ol-green;
}