// Common
.diff-file {
  margin-bottom: $gl-padding;

  .file-title,
  .file-title-flex-parent {
    cursor: pointer;

    @media (min-width: map-get($grid-breakpoints, md)) {
      $mr-file-header-top: $mr-version-controls-height + $header-height + $mr-tabs-height;

      position: -webkit-sticky;
      position: sticky;
      top: $mr-file-header-top;
      z-index: 102;

      &::before {
        content: '';
        position: absolute;
        top: -1px;
        left: -11px;
        width: 10px;
        height: calc(100% + 1px);
        background: $white-light;
        pointer-events: none;
      }

      .with-performance-bar & {
        top: $mr-file-header-top + $performance-bar-height;
      }

      &.is-commit {
        top: $header-height + $commit-stat-summary-height;

        .with-performance-bar & {
          top: $header-height + $commit-stat-summary-height + $performance-bar-height;
        }
      }

      &.is-compare {
        top: $header-height + $compare-branches-sticky-header-height;

        .with-performance-bar & {
          top: $performance-bar-height + $header-height + $compare-branches-sticky-header-height;
        }
      }
    }

    a:hover {
      text-decoration: none;
    }

    &:hover {
      background-color: $gray-normal;
    }

    svg {
      vertical-align: middle;
      top: -1px;
    }
  }

  .diff-content {
    background: $white-light;
    color: $gl-text-color;
    border-radius: 0 0 3px 3px;

    .unfold {
      cursor: pointer;
    }

    .file-mode-changed {
      padding: 10px;
      color: $gl-gray-500;
    }

    .suppressed-container {
      padding: ($padding-base-vertical + 5px) $padding-base-horizontal;
      text-align: center;

      // "Changes suppressed. Click to show." link
      .show-suppressed-diff {
        font-size: 110%;
        font-weight: $gl-font-weight-bold;
      }
    }

    .note-text {
      table {
        font-family: $font-family-sans-serif;
      }
    }

    table {
      width: 100%;
      font-family: $monospace-font;
      border: 0;
      border-collapse: separate;
      margin: 0;
      padding: 0;
      table-layout: fixed;
      border-radius: 0 0 $border-radius-default $border-radius-default;

      .diff-line-num {
        width: 50px;
        position: relative;

        a {
          transition: none;
        }
      }

      .line_holder td {
        line-height: $code-line-height;
        font-size: $code-font-size;
        vertical-align: top;

        &.noteable_line {
          position: relative;
        }

        span {
          white-space: pre-wrap;

          &.context-cell {
            display: inline-block;
            width: 100%;
            height: 100%;
          }
        }

        .line {
          word-wrap: break-word;
        }
      }

      &.left-side-selected {
        td.line_content.parallel.right-side {
          user-select: none;
        }
      }

      &.right-side-selected {
        td.line_content.parallel.left-side {
          user-select: none;
        }
      }
    }

    tr.line_holder.parallel {
      td.line_content.parallel {
        width: 46%;
      }

      .add-diff-note {
        margin-left: -55px;
      }
    }

    .old_line,
    .new_line {
      user-select: none;
      margin: 0;
      border: 0;
      padding: 0 5px;
      border-right: 1px solid;
      text-align: right;
      min-width: 35px;
      max-width: 50px;
      width: 35px;

      a {
        float: left;
        width: 35px;
        font-weight: $gl-font-weight-normal;

        &[disabled] {
          cursor: default;

          &:hover,
          &:active {
            text-decoration: none;
          }
        }
      }
    }

    .line_content {
      display: block;
      margin: 0;
      padding: 0 1.5em;
      border: 0;
      position: relative;

      &.parallel {
        display: table-cell;

        span {
          word-break: break-all;
        }
      }

      &.old {
        &::before {
          content: '-';
          position: absolute;
          left: 0.5em;
        }
      }

      &.new {
        &::before {
          content: '+';
          position: absolute;
          left: 0.5em;
        }
      }
    }

    .diff-loading-error-block {
      padding: $gl-padding * 2 $gl-padding;
      text-align: center;
    }
  }

  .image {
    background: $gray-darker;
    text-align: center;
    padding: 30px;

    .wrap {
      display: inline-block;
    }

    .frame {
      display: inline-block;
      background-color: $white-light;
      line-height: 0;

      img {
        border: 1px solid $white-light;
        background-image: linear-gradient(
            45deg,
            $border-color 25%,
            transparent 25%,
            transparent 75%,
            $border-color 75%,
            $border-color 100%
          ),
          linear-gradient(
            45deg,
            $border-color 25%,
            transparent 25%,
            transparent 75%,
            $border-color 75%,
            $border-color 100%
          );
        background-size: 10px 10px;
        background-position: 0 0, 5px 5px;
        max-width: 100%;
      }

      &.deleted {
        border: 1px solid $deleted;
      }

      &.added {
        border: 1px solid $added;
      }
    }

    .image-info {
      font-size: 12px;
      margin: 5px 0 0;
      color: $diff-image-info-color;
    }

    .view.swipe {
      position: relative;

      .swipe-frame {
        display: block;
        margin: auto;
        position: relative;
      }

      .swipe-wrap {
        overflow: hidden;
        border-left: 1px solid $gl-gray-400;
        position: absolute;
        display: block;
        top: 13px;
        right: 7px;
      }

      .swipe-bar {
        display: block;
        height: 100%;
        width: 15px;
        z-index: 100;
        position: absolute;
        cursor: pointer;

        &:hover {
          .top-handle {
            background-position: -15px 3px;
          }

          .bottom-handle {
            background-position: -15px -11px;
          }
        }

        .top-handle {
          display: block;
          height: 14px;
          width: 15px;
          position: absolute;
          top: 0;
          background: image-url('swipemode_sprites.gif') 0 3px no-repeat;
        }

        .bottom-handle {
          display: block;
          height: 14px;
          width: 15px;
          position: absolute;
          bottom: 0;
          background: image-url('swipemode_sprites.gif') 0 -11px no-repeat;
        }
      }
    }
    //.view.swipe
    .view.onion-skin {
      .onion-skin-frame {
        display: block;
        margin: auto;
        position: relative;
      }

      .frame.added,
      .frame.deleted {
        position: absolute;
        display: block;
        top: 0;
        left: 0;
      }

      .controls {
        display: block;
        height: 14px;
        width: 300px;
        z-index: 100;
        position: absolute;
        bottom: 0;
        left: 50%;
        margin-left: -150px;

        .drag-track {
          display: block;
          position: absolute;
          top: 0;
          left: 12px;
          height: 10px;
          width: 276px;
          background: image-url('onion_skin_sprites.gif') -4px -20px repeat-x;
        }

        .dragger {
          display: block;
          position: absolute;
          left: 0;
          top: 0;
          height: 14px;
          width: 14px;
          background: image-url('onion_skin_sprites.gif') 0 -34px repeat-x;
          cursor: pointer;
        }

        .transparent {
          display: block;
          position: absolute;
          top: 2px;
          right: 0;
          height: 10px;
          width: 10px;
          background: image-url('onion_skin_sprites.gif') -2px 0 no-repeat;
        }

        .opaque {
          display: block;
          position: absolute;
          top: 2px;
          left: 0;
          height: 10px;
          width: 10px;
          background: image-url('onion_skin_sprites.gif') -2px -10px no-repeat;
        }
      }
    }
    //.view.onion-skin
  }

  .view-modes {
    padding: 10px;
    text-align: center;
    background: $gray-darker;

    ul,
    li {
      list-style: none;
      margin: 0;
      padding: 0;
      display: inline-block;
    }

    li {
      color: $diff-view-modes-color;
      border-left: 1px solid $diff-view-modes-border;
      padding: 0 12px 0 16px;
      cursor: pointer;

      &:first-child {
        border-left: 0;
      }

      &:hover {
        text-decoration: underline;
      }

      &.active {
        cursor: default;
        color: $gl-text-color;

        &:hover {
          text-decoration: none;
        }
      }

      &.disabled {
        display: none;
      }
    }
  }

  .line_content {
    white-space: pre-wrap;
  }

  .diff-file-container {
    .frame.deleted {
      border: 1px solid $deleted;
      background-color: inherit;
    }

    .frame.added {
      border: 1px solid $added;
      background-color: inherit;
    }

    .swipe.view,
    .onion-skin.view {
      .swipe-wrap {
        top: 0;
        left: 0;
      }

      .frame.deleted {
        top: 0;
        right: 0;
      }

      .swipe-bar {
        top: 0;

        .top-handle {
          top: -14px;
          left: -7px;
        }

        .bottom-handle {
          bottom: -14px;
          left: -7px;
        }
      }

      .file-container {
        display: inline-block;

        .file-content {
          padding: 0;

          img {
            max-width: none;
          }
        }
      }
    }

    .onion-skin.view .controls {
      bottom: -25px;
    }
  }

  .discussion-notes .discussion-notes {
    margin-left: 0;
    border-left: 0;
  }
}

.diff-stats {
  align-items: center;
  padding: 0 .25rem;

  .diff-stats-group {
    padding: 0 .25rem;
  }

  svg.diff-stats-icon {
    vertical-align: text-bottom;
  }

  &.is-compare-versions-header {
    .diff-stats-group {
      padding: 0 .5rem;
    }
  }
}

.file-content .diff-file {
  margin: 0;
  border: 0;
}

.diff-wrap-lines .line_content {
  white-space: pre-wrap;
}

.inline-parallel-buttons {
  float: right;
}

.files-changed {
  border-bottom: 0;
}

.merge-request-details .file-content.image_file img {
  max-height: 50vh;
}

.diff-stats-summary-toggler {
  padding: 0;
  background-color: transparent;
  border: 0;
  color: $blue-600;
  font-weight: $gl-font-weight-bold;

  &:hover,
  &:focus {
    outline: none;
    color: $blue-800;
  }

  .caret-icon {
    position: relative;
    top: 2px;
    left: -1px;
  }
}

// Mobile
@media (max-width: 480px) {
  .diff-title {
    margin: 0;

    .file-mode {
      display: none;
    }
  }

  .diff-controls {
    position: static;
    text-align: center;
  }
}

// Bigger screens
@media (min-width: 481px) {
  .diff-title {
    margin-right: 200px;

    .file-mode {
      margin-left: 10px;
    }
  }

  .diff-controls {
    float: right;
    position: absolute;
    top: 5px;
    right: 15px;
  }
}

@mixin diff_background($background, $idiff, $border) {
  background: $background;

  &.line_content span.idiff {
    background: $idiff;
  }

  &.diff-line-num {
    border-color: $border;
  }
}

.files {
  .diff-file:last-child {
    margin-bottom: 0;
  }
}

.file-holder {
  .diff-line-num:not(.js-unfold-bottom) {
    a {
      &::before {
        content: attr(data-linenumber);
      }
    }
  }
}

.diff-comment-avatar-holders {
  position: absolute;
  height: 19px;
  width: 19px;
  margin-left: -15px;
  z-index: 100;

  &:hover {
    .diff-comment-avatar,
    .diff-comments-more-count {
      @for $i from 1 through 4 {
        $x-pos: 14px;

        &:nth-child(#{$i}) {
          @if $i == 4 {
            $x-pos: 14.5px;
          }

          transform: translateX((($i * $x-pos) - $x-pos));

          &:hover {
            transform: translateX((($i * $x-pos) - $x-pos));
          }
        }
      }
    }

    .diff-comments-more-count {
      padding-left: 2px;
      padding-right: 2px;
      width: auto;
    }
  }
}

.diff-comment-avatar,
.diff-comments-more-count {
  position: absolute;
  left: 0;
  width: 19px;
  height: 19px;
  margin-right: 0;
  border-color: $white-light;
  cursor: pointer;
  transition: all 0.1s ease-out;

  @for $i from 1 through 4 {
    &:nth-child(#{$i}) {
      z-index: (4 - $i);
    }
  }
}

.diff-comments-more-count {
  width: 19px;
  min-width: 19px;
  padding-left: 0;
  padding-right: 0;
  overflow: hidden;
}

.diff-comments-more-count,
.diff-notes-collapse {
  @extend .avatar-counter;
}

.diff-notes-collapse {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  padding: 0;
  transition: transform 0.1s ease-out;
  z-index: 100;

  .collapse-icon {
    height: 50%;
    width: 100%;
  }

  svg {
    vertical-align: middle;
  }

  .collapse-icon,
  path {
    fill: $white-light;
  }

  &:focus {
    outline: 0;
  }
}

.diff-files-changed {
  .inline-parallel-buttons {
    position: relative;
    z-index: 1;
  }

  .commit-stat-summary {
    @include media-breakpoint-up(sm) {
      margin-left: -$gl-padding;
      padding-left: $gl-padding;
      background-color: $white-light;
    }
  }

  @include media-breakpoint-up(sm) {
    position: -webkit-sticky;
    position: sticky;
    top: $header-height;
    background-color: $white-light;
    z-index: 200;

    .with-performance-bar & {
      top: $header-height + $performance-bar-height;
    }

    &.is-stuck {
      padding-top: 0;
      padding-bottom: 0;
      border-top: 1px solid $white-dark;
      border-bottom: 1px solid $white-dark;

      .diff-stats-additions-deletions-expanded,
      .inline-parallel-buttons {
        display: none !important;
      }
    }
  }

  @include media-breakpoint-up(lg) {
    &.is-stuck {
      .diff-stats-additions-deletions-collapsed {
        display: block !important;
      }
    }
  }
}

.diff-file-changes {
  max-width: 560px;
  width: 100%;
  z-index: 150;
  min-height: $dropdown-min-height;
  max-height: $dropdown-max-height;
  overflow-y: auto;
  margin-bottom: 0;

  @include media-breakpoint-up(sm) {
    left: $gl-padding;
  }

  .dropdown-input .dropdown-input-search {
    pointer-events: all;
  }

  .diff-changed-file {
    display: flex;
    padding-top: 8px;
    padding-bottom: 8px;
    min-width: 0;
  }

  .diff-file-changed-icon {
    margin-top: 2px;
  }

  .diff-changed-file-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .diff-changed-file-name,
  .diff-changed-blank-file-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .diff-changed-blank-file-name {
    color: $gl-text-color-tertiary;
    font-style: italic;
  }

  .diff-changed-file-path {
    color: $gl-text-color-tertiary;
  }

  .diff-changed-stats {
    margin-left: auto;
    white-space: nowrap;
  }
}

.diff-file-changes-path {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.note-container {
  background-color: $gray-light;
  border-top: 1px solid $white-normal;

  // double jagged line divider
  .discussion-notes + .discussion-notes::before,
  .diff-file-discussions + .discussion-form::before {
    content: '';
    position: relative;
    display: block;
    width: 100%;
    height: 10px;
    background-color: $white-light;
    background-image: linear-gradient(
        45deg,
        transparent,
        transparent 73%,
        $diff-jagged-border-gradient-color 75%,
        $white-light 80%
      ),
      linear-gradient(
        225deg,
        transparent,
        transparent 73%,
        $diff-jagged-border-gradient-color 75%,
        $white-light 80%
      ),
      linear-gradient(
        135deg,
        transparent,
        transparent 73%,
        $diff-jagged-border-gradient-color 75%,
        $white-light 80%
      ),
      linear-gradient(
        -45deg,
        transparent,
        transparent 73%,
        $diff-jagged-border-gradient-color 75%,
        $white-light 80%
      );
    background-position: 5px 5px, 0 5px, 0 5px, 5px 5px;
    background-size: 10px 10px;
    background-repeat: repeat;
  }

  .diff-file-discussions + .discussion-form {
    padding: $gl-padding;

    &::before {
      width: auto;
      margin-left: -$gl-padding;
      margin-right: -$gl-padding;
      margin-bottom: $gl-padding;
    }
  }

  .notes {
    position: relative;
  }

  .diff-notes-collapse {
    position: absolute;
    left: -12px;
  }
}

.diff-file .note-container > .new-note,
.note-container .discussion-notes.diff-discussions {
  margin-left: 100px;
  border-left: 1px solid $white-normal;
}

.notes.active {
  .diff-file .note-container > .new-note,
  .note-container .discussion-notes {
    // Override our margin and border (set for diff tab)
    // when user is on the discussion tab for MR
    margin-left: inherit;
    border-left: inherit;
  }
}

.files:not([data-can-create-note="true"]) .frame {
  cursor: auto;
}

.frame,
.frame.click-to-comment,
.btn-transparent.image-diff-overlay-add-comment {
  position: relative;
  cursor: image-url('illustrations/image_comment_light_cursor.svg')
      $image-comment-cursor-left-offset $image-comment-cursor-top-offset,
    auto;

  // Retina cursor
  cursor: -webkit-image-set(
        image-url('illustrations/image_comment_light_cursor.svg') 1x,
        image-url('illustrations/image_comment_light_cursor@2x.svg') 2x
      )
      $image-comment-cursor-left-offset $image-comment-cursor-top-offset,
    auto;

  .comment-indicator {
    position: absolute;
    padding: 0;
    width: (2px * $image-comment-cursor-left-offset);
    height: (2px * $image-comment-cursor-top-offset);
    color: $blue-400;
    // center the indicator to match the top left click region
    margin-top: (-1px * $image-comment-cursor-top-offset) + 2;
    margin-left: (-1px * $image-comment-cursor-left-offset) + 1;

    svg {
      width: 100%;
      height: 100%;
    }

    &:focus {
      outline: none;
    }
  }
}

.frame .badge.badge-pill,
.image-diff-avatar-link .badge.badge-pill,
.user-avatar-link .badge.badge-pill,
.notes > .badge.badge-pill {
  position: absolute;
  background-color: $blue-400;
  color: $white-light;
  border: $white-light 1px solid;
  min-height: $gl-padding;
  padding: 5px 8px;
  border-radius: 12px;

  &:focus {
    outline: none;
  }
}

.frame .badge.badge-pill,
.frame .image-comment-badge {
  // Center align badges on the frame
  transform: translate(-50%, -50%);
}

.image-comment-badge {
  position: absolute;
  width: 24px;
  height: 24px;
  padding: 0;
  background: none;
  border: 0;

  > svg {
    width: 100%;
    height: 100%;
  }
}

.image-diff-avatar-link,
.user-avatar-link {
  position: relative;

  .badge.badge-pill,
  .image-comment-badge {
    top: 25px;
    right: 8px;
  }
}

.notes > .badge.badge-pill {
  display: none;
  left: -13px;
}

.discussion-notes {
  min-height: 35px;

  &:first-child {
    // First child does not have the jagged borders
    min-height: 25px;
  }

  &.collapsed {
    background-color: $white-light;

    .diff-notes-collapse,
    .note,
    .discussion-reply-holder {
      display: none;
    }

    .notes > .badge.badge-pill {
      display: block;
    }
  }
}

.discussion-body .image .frame {
  position: relative;
}

.diff-tree-list {
  width: 320px;
}

.diff-files-holder {
  flex: 1;
  min-width: 0;
}

.compare-versions-container {
  min-width: 0;
}

.tree-list-holder {
  position: -webkit-sticky;
  position: sticky;
  $top-pos: $header-height + $mr-tabs-height + $mr-version-controls-height + 10px;
  top: $header-height + $mr-tabs-height + $mr-version-controls-height + 10px;
  max-height: calc(100vh - #{$top-pos});
  padding-right: $gl-padding;

  .file-row {
    margin-left: 0;
    margin-right: 0;
  }

  .with-performance-bar & {
    $performance-bar-top-pos: $performance-bar-height + $top-pos;
    top: $performance-bar-top-pos;
    max-height: calc(100vh - #{$performance-bar-top-pos});
  }
}

.tree-list-scroll {
  max-height: 100%;
  padding-top: $grid-size;
  padding-bottom: $grid-size;
  border-top: 1px solid $border-color;
  border-bottom: 1px solid $border-color;
  overflow-y: scroll;
  overflow-x: auto;
}

.tree-list-search {
  flex: 0 0 34px;

  .form-control {
    padding-left: 30px;
  }
}

.tree-list-icon {
  top: 50%;
  left: 10px;
  transform: translateY(-50%);

  &,
  svg {
    fill: $gl-text-color-tertiary;
  }
}

.tree-list-clear-icon {
  right: 10px;
  left: auto;
  line-height: 0;
}

@media (max-width: map-get($grid-breakpoints, md)-1) {
  .diffs .files {
    @include fixed-width-container;
    flex-direction: column;

    .diff-tree-list {
      width: 100%;
    }

    .tree-list-holder {
      max-height: calc(50px + 50vh);
      padding-right: 0;
    }
  }
}

.image-diff-overlay,
.image-diff-overlay-add-comment {
  top: 0;
  left: 0;

  &:active,
  &:focus {
    outline: 0;
  }
}
