overleaf/services/web/frontend/stylesheets/bootstrap-5/pages/editor/pdf.scss

:root {
  --pdf-bg: var(--neutral-10);
  --pdf-toolbar-btn-hover-color: rgb(125 125 125 / 20%);
  --synctex-control-size: 24px;
}

@include theme('light') {
  --pdf-toolbar-btn-hover-color: var(--neutral-10);
}

.pdf .toolbar.toolbar-pdf {
  @include toolbar-sm-height;
  @include toolbar-alt-bg;

  padding-right: var(--spacing-03);
  margin-left: 0;

  .btn.disabled,
  .btn[disabled] {
    pointer-events: auto;
    cursor: not-allowed;
    opacity: 1;
  }
}

.toolbar-pdf-left {
  gap: var(--spacing-02);

  .dropdown > .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;

    &[disabled],
    &[disabled]:active {
      background-color: var(--bs-btn-bg);
      color: var(--bs-btn-color);
      opacity: 1;
      pointer-events: auto;
      cursor: not-allowed;
    }
  }
}

.toolbar-pdf-orphan,
.toolbar-pdf-left,
.toolbar-pdf-right,
.toolbar-pdf-controls {
  display: flex;
  align-items: center;
  align-self: stretch;
}

.toolbar-pdf-orphan,
.toolbar-pdf-controls {
  flex: 1 1 100%;
}

.toolbar-pdf-controls {
  margin-right: var(--spacing-02);
  justify-content: flex-end;
}

.toolbar-pdf-right {
  flex: 1;
  justify-content: flex-end;
}

.toolbar-pdf-orphan {
  justify-content: center;
  color: var(--toolbar-btn-color);

  .btn {
    margin-left: var(--spacing-03);
  }
}

.btn.pdf-toolbar-btn {
  display: inline-block;
  color: var(--toolbar-btn-color);
  background-color: transparent;
  padding: 0 var(--spacing-01);
  line-height: 1;
  height: 24px;
  border-radius: var(--border-radius-base);
  text-decoration: none;

  &:hover,
  &:active,
  &:focus {
    color: var(--toolbar-btn-color);
  }

  &:hover {
    &:not(:disabled) {
      background-color: var(--pdf-toolbar-btn-hover-color);
    }
  }

  &:active {
    background-color: transparent;
  }

  .button-content {
    align-self: center;
  }

  .badge {
    font-size: 60%;
  }

  &.log-btn {
    border: none;

    &.active {
      color: var(--white);
      background-color: var(--link-color);
      box-shadow: none;
      opacity: 0.65;

      &:hover {
        &:not(:disabled) {
          background-color: transparent;
          color: var(--toolbar-btn-color);
        }
      }
    }

    &:focus {
      outline: none;
    }
  }
}

.pdf {
  background-color: var(--pdf-bg);
}

.pdf-viewer,
.pdf-logs,
.pdf-errors,
.pdf-uncompiled {
  @extend .full-size;

  top: var(--toolbar-small-height);
}

.pdf-viewer {
  iframe {
    width: 100%;
    height: 100%;
    border: none;
  }

  .pdfjs-viewer {
    @extend .full-size;

    background-color: transparent;
    overflow: scroll;

    /* stylelint-disable-next-line selector-class-pattern */
    .canvasWrapper > canvas,
    div.pdf-canvas {
      background: white;
      box-shadow: 0 0 10px rgb(0 0 0 / 50%);
    }

    div.pdf-canvas.pdfng-empty {
      background-color: var(--white);
    }

    div.pdf-canvas.pdfng-loading {
      background-color: var(--white);
    }

    .page-container {
      margin: var(--spacing-05) auto;
      padding: 0 var(--spacing-05);
      box-sizing: content-box;
      user-select: none;
    }

    .page {
      box-sizing: content-box;
      margin: var(--spacing-05) auto;
      box-shadow: 0 0 8px #bbb;
      border: none;
    }

    .pdfjs-viewer-inner {
      position: absolute;
      overflow-y: scroll;
      width: 100%;
      height: 100%;
      -webkit-font-smoothing: initial;
      -moz-osx-font-smoothing: initial;

      /* fix review-panel overflow issue, see: https://github.com/overleaf/internal/issues/6781#issuecomment-1112708638 */
      /* stylelint-disable-next-line selector-class-pattern */
      .pdfViewer {
        min-height: 100%;
      }
    }

    &:focus-within {
      outline: none;
    }

    /* Avoids https://github.com/mozilla/pdf.js/issues/13840 in Chrome */
    /* stylelint-disable-next-line selector-class-pattern */
    .textLayer br::selection {
      background: transparent;
    }
  }

  .progress-thin {
    position: absolute;
    top: -2px;
    height: 3px;
    left: 0;
    right: 0;

    .progress-bar {
      height: 100%;
      background-color: var(--link-color);
    }
  }
}

.pdfjs-viewer-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 100%;
}

.pdfjs-zoom-controls {
  display: inline-flex;
  border-left: 1px solid rgb(125 125 125 / 30%);
}

.pdfjs-toolbar-buttons {
  display: flex;
  gap: var(--spacing-04);
  margin-left: var(--spacing-04);
  margin-right: var(--spacing-04);
}

.pdfjs-toolbar-button {
  padding: var(--spacing-01) !important;
  display: flex;
  align-items: center;
}

.pdfjs-zoom-dropdown-button {
  width: 60px;
  text-align: right;
  font-weight: normal;
}

.pdfjs-zoom-dropdown-mac-shortcut-char {
  display: inline-block;
  width: 1em;
  text-align: center;
}

.pdfjs-custom-zoom-menu-item {
  display: block;
  pointer-events: initial !important;

  &:hover {
    background-color: initial !important;
    color: initial !important;
    cursor: initial !important;
  }
}

.pdfjs-page-number-input {
  color: var(--toolbar-btn-color);
  font-size: var(--font-size-02);
  padding-right: var(--spacing-04);
  display: flex;
  align-items: center;
  gap: var(--spacing-02);

  input {
    color: initial;
    border: 1px solid var(--neutral-60);
    width: 32px;
    height: 24px;
    border-radius: var(--border-radius-base);
    text-align: center;
  }
}

.pdfjs-viewer-controls-small {
  display: flex;
  align-items: center;
  gap: var(--spacing-04);
}

.pdfjs-toolbar-popover-button {
  padding: var(--spacing-01) !important;
}

.pdfjs-toolbar-popover {
  background-color: var(--editor-toolbar-bg);
  border-radius: var(--border-radius-base);

  .popover-arrow {
    display: none;
  }

  button {
    background-color: transparent;
    color: var(--toolbar-btn-color);
  }

  .popover-body {
    display: flex;
    align-items: center;
    padding: var(--spacing-04) 0;
  }
}

// The new viewer UI has overflow on the inner element,
// so disable the overflow on the outer element
.pdf-viewer .pdfjs-viewer.pdfjs-viewer-outer {
  overflow: hidden;
}

:fullscreen {
  .pdfjs-viewer-inner {
    overflow-y: hidden !important;
  }
}

.synctex-controls {
  margin-right: calc(var(--spacing-04) * -1);
  position: absolute;
  z-index: 6;
  padding: 0;
  top: 68px;
}

.synctex-control:not(.detach-synctex-control) {
  align-items: center;
  background-color: rgba($bg-dark-tertiary, 0.8);
  border-color: transparent;
  border-radius: var(--border-radius-full);
  color: var(--content-primary-dark);
  display: flex !important;
  height: var(--synctex-control-size);
  justify-content: center;
  margin-bottom: var(--spacing-05);
  padding: 0;
  transition: background 0.15s ease;
  width: var(--synctex-control-size);

  &:focus:not(:focus-visible) {
    outline: none;
  }

  &:active {
    background-color: rgba($bg-dark-tertiary, 0.8);
    color: var(--content-primary-dark);
  }
}

.synctex-control {
  .synctex-control-icon {
    font-weight: 700;
    font-size: var(--font-size-06);
  }
}

.keyboard-tooltip {
  .tooltip-inner {
    max-width: none;
  }
}