Overleaf/services/web/frontend/stylesheets/pages/editor/pdf.scss

:root {
  --pdf-bg: var(--bg-dark-secondary);
  --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-bg: var(--neutral-10);
}

.pdf-code-check-failed-banner-container {
  position: absolute;
  top: calc(var(--toolbar-small-height) + var(--spacing-04));
  left: 0;
  right: 0;
  z-index: 1;
  display: flex;
  justify-content: center;
  padding: 0 var(--spacing-06);
}

.pdf-code-check-failed-banner {
  display: flex;
  align-items: center;
  gap: var(--spacing-02);
  background-color: var(--bg-light-primary);
  color: var(--content-primary);
  border: 1px solid var(--border-divider);
  padding: var(--spacing-02) var(--spacing-03) var(--spacing-02)
    var(--spacing-02);
  border-radius: var(--border-radius-full);
  box-shadow: 0 2px 4px 0 #1e253029;
}

.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);

  .compile-button-group {
    height: 24px;
    background-color: var(--bg-accent-01);
    border-radius: 12px;
    margin-left: var(--spacing-02);

    .btn-primary:hover {
      z-index: auto; // prevents border from being hidden
    }
  }

  .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;
    }
  }

  .dropdown > .compile-button {
    border-top-left-radius: 12px;
    border-bottom-left-radius: 12px;
    font-size: var(--font-size-02);
  }

  .dropdown > .compile-dropdown-toggle {
    width: 26px;
    padding: var(--spacing-01);
  }
}

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

.toolbar-pdf-controls {
  margin-right: var(--spacing-02);
  justify-content: flex-end;
  flex: 1 1 100%;
}

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

.toolbar-pdf-orphan {
  color: var(--toolbar-btn-color);
}

.toolbar-pdf-orphan-btn,
.toolbar-pdf-orphan {
  margin-left: var(--spacing-02);
}

.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;
    }
  }

  &.theme-toggle-btn {
    border: none;
    border-radius: var(--border-radius-full);

    &.active {
      color: var(--white);
      background-color: var(--green-70);

      &:hover {
        background-color: var(--green-60);
      }
    }

    &:focus {
      outline: none;
    }
  }
}

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

  &.pdf-dark-mode {
    --pdf-bg: var(--bg-dark-secondary);

    .pdfjs-viewer {
      --canvas-box-shadow: none;

      .page {
        filter: invert(95%) hue-rotate(180deg) brightness(90%) contrast(90%);
      }
    }
  }
}

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

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

.pdf-viewer {
  isolation: isolate;

  iframe {
    width: 100%;
    height: 100%;
    border: none;
  }

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

    --canvas-box-shadow: 0 0 10px rgb(0 0 0 / 50%);

    background-color: transparent;
    overflow: scroll;

    /* stylelint-disable-next-line selector-class-pattern */
    .canvasWrapper > canvas,
    div.pdf-canvas {
      background: white;
      box-shadow: var(--canvas-box-shadow);
    }

    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 {
      display: block; // prevent Overleaf's .loading class (display:inline-flex) from affecting PDF.js page state
      box-sizing: content-box;
      margin: var(--spacing-05) auto;
      box-shadow:
        0 5px 5px 0 #23282f0d,
        0 3px 14px 0 #23282f08,
        0 8px 10px 0 #23282f14;
      border: none;

      // Overleaf has its own loading state UI; suppress the PDF.js page-level loading
      // spinner so the loadingIcon/loading classes have no layout or visual effect.
      /* stylelint-disable-next-line selector-class-pattern */
      &.loadingIcon::after {
        display: none;
      }
    }

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

      /* 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;
    }

    /* Avoid slowdown in Safari when text layers are reset on selection change */
    /* stylelint-disable-next-line selector-class-pattern */
    .textLayer {
      will-change: transform;
    }

    /* Avoid multiple small layers within annotation layer */
    /* stylelint-disable-next-line selector-class-pattern */
    .annotationLayer {
      will-change: transform;
    }

    /* 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);
    }
  }
}

::view-transition-old(pdf-viewer),
::view-transition-new(pdf-viewer) {
  animation-duration: 0.25s;
}

.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);

  .btn {
    border-radius: var(--border-radius-base) !important;
  }
}

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

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

.toolbar-pdf-compile-time {
  color: var(--toolbar-btn-color);
  font-size: var(--font-size-02);
  padding: 0 var(--spacing-04);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-02);
  white-space: nowrap;
}

.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 {
    background-color: var(--bg-primary-themed);
    color: var(--content-primary-themed);
    border: 1px solid var(--border-primary-themed);
    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 {
  /* stylelint-disable selector-class-pattern */
  .pdfViewer {
    min-height: auto !important;
  }

  .pdfjs-viewer-inner {
    overflow-y: hidden !important;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

.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-size: var(--font-size-06);
    font-weight: normal;
  }
}

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

#dropdown-files-logs-pane-list {
  overflow-y: auto;

  .dropdown-header {
    white-space: nowrap;
  }

  // This keeps the dropdown menu inside the Logs div.
  // "spacing-11" is there to compensate the button height and the margin around the logs.
  max-height: calc(
    100vh - #{$toolbar-small-height + $toolbar-height + $spacing-11}
  );
}

.pdf-preview-messages {
  position: absolute;
  right: var(--spacing-06);
  left: var(--spacing-06);
  top: var(--spacing-10);
  z-index: 1;
}

.synctex-error-toast-content {
  display: flex;
  gap: 20px;
}