/* Copyright 2025 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#outerContainer {
  &.viewsManagerMoving {
    #viewsManager {
      visibility: visible;
    }
  }

  &.viewsManagerOpen {
    #viewsManager {
      visibility: visible;
      inset-inline-start: 1px;
    }

    #viewerContainer:not(.pdfPresentationMode) {
      inset-inline-start: var(--viewsManager-width, 0);
      transition-property: inset-inline-start;
    }
  }

  &.viewsManagerResizing :is(#sidebarContainer, #viewerContainer, #loadingBar) {
    /* Improve responsiveness and avoid visual glitches when the sidebar is resized. */
    transition-duration: 0s;
  }
}

#viewsManager {
  --views-manager-button-icon: url(images/pages_viewButton.svg);
  --views-manager-button-arrow-icon: url(images/pages_viewArrow.svg);
  --views-manager-add-file-button-icon: url(images/toolbarButton-zoomIn.svg);
  --current-outline-button-icon: url(images/toolbarButton-currentOutlineItem.svg);
  --menuitem-thumbnailsView-icon: url(images/pages_viewButton.svg);
  --menuitem-outlinesView-icon: url(images/toolbarButton-viewOutline.svg);
  --menuitem-attachmentsView-icon: url(images/toolbarButton-viewAttachments.svg);
  --menuitem-layersView-icon: url(images/toolbarButton-viewLayers.svg);
  --manage-button-icon: url(images/toolbarButton-pageDown.svg);
  --close-button-icon: url(images/pages_closeButton.svg);
  --undo-label-icon: url(images/altText_done.svg);
  --pages-selected-icon: url(images/pages_selected.svg);
  --spinner-icon: url(images/altText_spinner.svg);

  --sidebar-bg-color: light-dark(rgb(255 255 255 / 0.92), rgb(35 34 43 / 0.92));
  --sidebar-backdrop-filter: blur(7px);
  --sidebar-width: 230px;
  --sidebar-min-width: min-content;
  --sidebar-max-width: 50vw;

  --text-color: light-dark(#15141a, #fbfbfe);
  --button-fg: var(--text-color);
  --button-no-bg: transparent;
  --button-bg: light-dark(rgb(21 20 26 / 0.07), rgb(251 251 254 / 0.07));
  --button-border-color: transparent;
  --button-hover-bg: light-dark(rgb(21 20 26 / 0.14), rgb(251 251 254 / 0.14));
  --button-hover-fg: var(--text-color);
  --button-hover-border-color: var(--button-border-color);
  --button-active-bg: light-dark(rgb(21 20 26 / 0.21), rgb(251 251 254 / 0.21));
  --button-active-fg: var(--text-color);
  --button-active-border-color: var(--button-border-color);
  --button-focus-no-bg: color-mix(in srgb, var(--text-color), transparent 93%);
  --button-focus-outline-color: light-dark(#0062fa, #00cadb);
  --button-focus-border-color: light-dark(white, black);
  --status-border-color: transparent;
  --status-actions-bg: light-dark(
    rgb(21 20 26 / 0.03),
    rgb(251 251 254 / 0.03)
  );
  --status-undo-bg: light-dark(rgb(0 98 250 / 0.08), rgb(0 202 219 / 0.08));
  --status-waiting-bg: var(--status-undo-bg);
  --indicator-color: light-dark(#0062fa, #00cadb);
  --status-warning-bg: light-dark(#ffe8ea, #6e001f);
  --indicator-warning-color: light-dark(#b20037, #ffa0aa);
  --header-shadow:
    0 0.25px 0.75px -0.75px light-dark(rgb(0 0 0 / 0.05), rgb(0 0 0 / 0.2)),
    0 2px 6px -6px light-dark(rgb(0 0 0 / 0.1), rgb(0 0 0 / 0.4));
  --image-outline: none;
  --image-border-width: 6px;
  --image-border-color: light-dark(#cfcfd8, #3a3944);
  --image-hover-border-color: #bfbfc9;
  --image-current-border-color: var(--button-focus-outline-color);
  --image-current-focused-outline-color: var(--image-hover-border-color);
  --image-page-number-bg: light-dark(#f0f0f4, #23222b);
  --image-page-number-fg: var(--text-color);
  --image-current-page-number-bg: var(--image-current-border-color);
  --image-current-page-number-fg: light-dark(#fff, #15141a);
  --image-shadow:
    0 0.375px 1.5px 0 light-dark(rgb(0 0 0 / 0.05), rgb(0 0 0 / 0.2)),
    0 0 0 1px var(--image-border-color),
    0 3px 12px 0 light-dark(rgb(0 0 0 / 0.1), rgb(0 0 0 / 0.4));
  --image-hover-shadow:
    0 0.375px 1.5px 0 light-dark(rgb(0 0 0 / 0.05), rgb(0 0 0 / 0.2)),
    0 0 0 1px light-dark(rgb(21 20 26 / 0.1), rgb(251 251 254 / 0.1)),
    0 0 0 var(--image-border-width) var(--image-hover-border-color),
    0 3px 12px 0 light-dark(rgb(0 0 0 / 0.1), rgb(0 0 0 / 0.4));
  --image-current-shadow:
    0 0.375px 1.5px 0 light-dark(rgb(0 0 0 / 0.05), rgb(0 0 0 / 0.2)),
    0 0 0 var(--image-border-width) var(--image-current-border-color),
    0 3px 12px 0 light-dark(rgb(0 0 0 / 0.1), rgb(0 0 0 / 0.4));
  --image-dragging-placeholder-bg: light-dark(
    rgb(0 98 250 / 0.08),
    rgb(0 202 219 / 0.08)
  );
  --multiple-dragging-bg: white;
  --image-multiple-dragging-shadow:
    0 0 0 var(--image-border-width) var(--image-current-border-color),
    var(--image-border-width) var(--image-border-width) 0
      calc(var(--image-border-width) / 2) var(--multiple-dragging-bg),
    var(--image-border-width) var(--image-border-width) 0
      calc(3 * var(--image-border-width) / 2) var(--image-current-border-color);
  --image-dragging-shadow: 0 0 0 var(--image-border-width)
    var(--image-current-border-color);
  --multiple-dragging-text-color: light-dark(#fbfbfe, #15141a);

  @media screen and (forced-colors: active) {
    --text-color: CanvasText;
    --button-fg: ButtonText;
    --button-bg: ButtonFace;
    --button-no-bg: ButtonFace;
    --button-border-color: ButtonText;
    --button-hover-bg: SelectedItemText;
    --button-hover-fg: SelectedItem;
    --button-hover-border-color: SelectedItem;
    --button-active-bg: SelectedItemText;
    --button-active-fg: SelectedItem;
    --button-active-border-color: ButtonText;
    --button-focus-no-bg: ButtonFace;
    --button-focus-outline-color: CanvasText;
    --button-focus-border-color: none;
    --status-border-color: CanvasText;
    --status-undo-bg: none;
    --indicator-color: CanvasText;
    --status-warning-bg: none;
    --indicator-warning-color: CanvasText;
    --header-shadow: none;
    --image-shadow: 0 0 0 1px CanvasText;
    --image-outline: 1px solid CanvasText;
    --image-border-color: CanvasText;
    --image-hover-border-color: SelectedItem;
    --image-current-border-color: ButtonBorder;
    --image-current-focused-outline-color: var(--image-hover-border-color);
    --image-page-number-bg: ButtonFace;
    --image-page-number-fg: CanvasText;
    --multiple-dragging-bg: Canvas;
  }

  display: flex;
  padding-bottom: 16px;
  flex-direction: column;
  align-items: flex-start;
  height: calc(
    var(--viewer-container-height) - var(--toolbar-height) -
      var(--doorhanger-height)
  );
  position: absolute;

  inset-inline-start: calc(
    -1 * var(--viewsManager-width, --sidebar-width) - 1px
  );
  transition-property: inset-inline-start;
  transition-duration: var(--sidebar-transition-duration);
  transition-timing-function: var(--sidebar-transition-timing-function);

  .sidebarResizer {
    inset-inline-start: 100%;
  }

  .viewsManagerButton {
    width: auto;
    color: var(--button-fg);
    border-radius: 8px;
    border: 1px solid var(--button-border-color);
    background: var(--button-bg);

    &:hover {
      background-color: var(--button-hover-bg) !important;
      color: var(--button-hover-fg) !important;
      border-color: var(--button-hover-border-color) !important;

      &::before {
        background-color: var(--button-hover-fg) !important;
      }
    }
    &:active {
      background: var(--button-active-bg) !important;
      color: var(--button-active-fg) !important;
      border-color: var(--button-active-border-color) !important;

      &::before {
        background-color: var(--button-active-fg) !important;
      }
    }
    &:focus-visible {
      outline: 2px solid var(--button-focus-outline-color);
      outline-offset: 2px;
      border-color: var(--button-focus-border-color);
    }

    &.viewsCloseButton {
      width: 32px;
      height: 32px;
      padding: 4px;
      border-radius: 8px;

      &::before {
        mask-image: var(--close-button-icon);
      }
    }
  }

  #viewsManagerHeader {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    align-self: stretch;
    width: 100%;
    box-shadow: var(--header-shadow);
    flex: 0 0 auto;

    .viewsManagerLabel {
      flex: 1 0 0;
      color: var(--text-color);
      text-align: center;
      height: fit-content;
      user-select: none;

      font: menu;
      font-size: 15px;
      font-style: normal;
      font-weight: 400;
      line-height: normal;
    }

    #viewsManagerTitle {
      display: flex;
      flex-direction: row;
      align-items: center;
      align-self: stretch;
      justify-content: space-between;
      width: auto;
      padding: 12px 16px 12px 8px;

      #viewsManagerSelector {
        width: 48px;
        height: 32px;
        display: block;

        > button {
          background: var(--button-no-bg);
          width: 100%;
          height: 100%;

          &:focus-visible {
            background-color: var(--button-focus-no-bg);
          }

          &::before {
            mask-repeat: no-repeat;
            mask-image: var(--views-manager-button-icon);
            background-color: var(--button-fg);

            &:hover {
              background-color: var(--button-hover-fg) !important;
            }
            &:active {
              background-color: var(--button-active-fg) !important;
            }
          }

          &::after {
            content: "";
            display: inline-block;
            width: 12px;
            height: 12px;
            margin-left: 8px;
            mask-repeat: no-repeat;
            mask-position: center;
            mask-image: var(--views-manager-button-arrow-icon);
            background-color: var(--button-fg);

            &:hover {
              background-color: var(--button-hover-fg) !important;
            }
            &:active {
              background-color: var(--button-active-fg) !important;
            }
          }
        }

        > .popupMenu {
          min-width: 182px;
          z-index: 1;

          > li > button {
            &#thumbnailsViewMenu::before {
              mask-image: var(--menuitem-thumbnailsView-icon);
            }
            &#outlinesViewMenu::before {
              mask-image: var(--menuitem-outlinesView-icon);
            }
            &#attachmentsViewMenu::before {
              mask-image: var(--menuitem-attachmentsView-icon);
            }
            &#layersViewMenu::before {
              mask-image: var(--menuitem-layersView-icon);
            }
          }
        }
      }

      #viewsManagerAddFileButton {
        background: var(--button-no-bg);
        width: 32px;
        height: 32px;

        &:focus-visible {
          background-color: var(--button-focus-no-bg);
        }

        &::before {
          mask-repeat: no-repeat;
          mask-image: var(--views-manager-add-file-button-icon);
        }
      }

      #viewsManagerCurrentOutlineButton {
        background: var(--button-no-bg);
        width: 32px;
        height: 32px;

        &:focus-visible {
          background-color: var(--button-focus-no-bg);
        }

        &::before {
          mask-repeat: no-repeat;
          mask-image: var(--current-outline-button-icon);
        }
      }
    }

    #viewsManagerStatus {
      display: flex;
      align-items: center;
      align-self: stretch;
      justify-content: space-between;
      width: auto;
      border: 1px solid var(--status-border-color);

      > div {
        min-height: 64px;
        width: 100%;
        padding-inline: 16px;
      }

      .viewsManagerStatusLabel {
        display: flex;
        align-items: center;
        gap: 8px;

        font: menu;
        font-size: 13px;
      }

      #viewsManagerStatusAction {
        display: flex;
        justify-content: space-between;
        align-items: center;
        align-self: stretch;
        background-color: var(--status-actions-bg);

        > span.selected::before {
          content: "";
          display: inline-block;
          width: var(--icon-size);
          height: var(--icon-size);
          mask-repeat: no-repeat;
          mask-position: center;
          background-color: var(--indicator-color);
          mask-image: var(--pages-selected-icon);
        }

        #actionSelector {
          height: 32px;
          width: auto;
          display: block;

          #viewsManagerStatusActionButton {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            width: 100%;
            height: 100%;
            padding: 4px 16px;

            &::after {
              content: "";
              display: inline-block;
              width: var(--icon-size);
              height: var(--icon-size);
              mask-repeat: no-repeat;
              mask-position: center;
              mask-image: var(--manage-button-icon);
              background-color: var(--button-fg);

              &:hover {
                background-color: var(--button-hover-fg) !important;
              }
              &:active {
                background-color: var(--button-active-fg) !important;
              }
            }
          }

          > .contextMenu {
            min-width: 115px;
          }
        }
      }

      #viewsManagerStatusUndo {
        display: flex;
        justify-content: space-between;
        align-items: center;
        align-self: stretch;
        background-color: var(--status-undo-bg);

        > span::before {
          content: "";
          display: inline-block;
          width: var(--icon-size);
          height: var(--icon-size);
          mask-repeat: no-repeat;
          mask-position: center;
          mask-image: var(--undo-label-icon);
          background-color: var(--indicator-color);
        }

        > div {
          display: flex;
          align-items: center;
          gap: 8px;
          width: auto;

          #viewsManagerStatusUndoButton {
            width: auto;
            min-height: 24px;
            padding: 4px 8px;
          }
        }
      }

      #viewsManagerStatusWarning {
        display: flex;
        align-items: center;
        justify-content: space-between;
        background-color: var(--status-warning-bg);

        > span {
          align-items: flex-start;

          &::before {
            content: "";
            display: inline-block;
            width: var(--icon-size);
            height: var(--icon-size);
            mask-repeat: no-repeat;
            mask-position: center;
            background-color: var(--indicator-warning-color);
            mask-image: var(--undo-label-icon);
            flex: 0 0 auto;
          }
        }
      }

      #viewsManagerStatusWaiting {
        display: flex;
        align-items: center;
        justify-content: space-between;
        background-color: var(--status-waiting-bg);

        > span::before {
          content: "";
          display: inline-block;
          width: var(--icon-size);
          height: var(--icon-size);
          mask-repeat: no-repeat;
          mask-position: center;
          background-color: var(--indicator-color);
          mask-image: var(--spinner-icon);
          flex: 0 0 auto;
        }
      }
    }
  }

  #viewsManagerContent {
    width: 100%;
    flex: 1 1 0%;
    overflow: auto;

    &:has(#thumbnailsView.isDragging) {
      overflow-x: hidden;
    }

    #thumbnailsView {
      --thumbnail-width: 126px;

      display: flex;
      flex-flow: row wrap;
      align-items: center;
      justify-content: space-evenly;
      padding: 20px 32px;
      gap: 20px;
      width: 100%;
      box-sizing: border-box;
      position: relative;

      &.isDragging {
        cursor: grabbing;

        > .thumbnail {
          > .thumbnailImage:hover {
            cursor: grabbing;

            &:not([aria-current="page"]) {
              box-shadow: var(--image-shadow);
            }
          }

          > input {
            pointer-events: none;
          }
        }

        > .dragMarker {
          position: absolute;
          top: 0;
          left: 0;
          border: 2px solid var(--indicator-color);
          contain: strict;
        }
      }

      > .thumbnail {
        display: inline-flex;
        justify-content: center;
        align-items: center;
        gap: 16px;
        width: auto;
        height: auto;
        position: relative;
        scroll-margin-top: 20px;

        &:not(.isDragging)::after {
          content: attr(page-number);
          border-radius: 8px;
          background-color: var(--image-page-number-bg);
          color: var(--image-page-number-fg);
          position: absolute;
          bottom: 5px;
          inset-inline-end: calc(var(--thumbnail-width) / 2);
          min-width: 32px;
          height: 16px;
          text-align: center;
          translate: calc(var(--dir-factor) * 50%);

          font: menu;
          font-size: 13px;
          font-style: normal;
          font-weight: 400;
          line-height: normal;

          pointer-events: none;
          user-select: none;
        }

        &:has([aria-current="page"]):not(.isDragging)::after {
          background-color: var(--image-current-page-number-bg);
          color: var(--image-current-page-number-fg);
        }

        &.isDragging > input {
          visibility: hidden;
        }

        > input {
          margin: 0;
        }

        > .thumbnailImage {
          --thumbnail-dragging-scale: 1.4;

          width: var(--thumbnail-width);
          border: none;
          border-radius: 8px;
          box-shadow: var(--image-shadow);
          box-sizing: content-box;
          outline: var(--image-outline);
          user-select: none;

          &.missingThumbnailImage {
            content-visibility: hidden;
          }

          &:hover {
            cursor: pointer;
            box-shadow: var(--image-hover-shadow);
          }

          &:focus-visible {
            &:not([aria-current="page"]) {
              box-shadow: var(--image-hover-shadow);
              outline: none;
            }

            &[aria-current="page"] {
              outline: var(--image-border-width) solid
                var(--image-current-focused-outline-color);
              outline-offset: var(--image-border-width);
            }
          }

          &[aria-current="page"] {
            box-shadow: var(--image-current-shadow);
          }

          &.placeholder {
            background-color: var(--image-dragging-placeholder-bg);
            box-shadow: none !important;
          }

          &.draggingThumbnail {
            position: absolute;
            left: 0;
            top: 0;
            z-index: 1;
            transform-origin: 0 0 0;
            scale: calc(1 / var(--thumbnail-dragging-scale));
            pointer-events: none;
            box-shadow: var(--image-dragging-shadow);

            &.multiple {
              box-shadow: var(--image-multiple-dragging-shadow);

              > img {
                position: absolute;
                top: 0;
                left: 0;

                width: var(--thumbnail-width);
                border: none;
                border-radius: 8px;
                box-sizing: content-box;
                outline: none;
                user-select: none;
              }

              &::after {
                content: attr(data-multiple-count);
                border-radius: calc(8px * var(--thumbnail-dragging-scale));
                background-color: var(--indicator-color);
                color: var(--multiple-dragging-text-color);
                position: absolute;
                inset-block-end: calc(4px * var(--thumbnail-dragging-scale));
                inset-inline-start: calc(4px * var(--thumbnail-dragging-scale));
                min-width: calc(32px * var(--thumbnail-dragging-scale));
                height: calc(16px * var(--thumbnail-dragging-scale));
                text-align: center;
                font: menu;
                font-size: calc(13px * var(--thumbnail-dragging-scale));
                font-style: normal;
                font-weight: 400;
                line-height: normal;
                contain: strict;
              }
            }
          }
        }
      }
    }

    #attachmentsView {
      --attachment-color: light-dark(rgb(0 0 0 / 0.8), rgb(255 255 255 / 0.8));
      --attachment-bg-color: light-dark(
        rgb(0 0 0 / 0.15),
        rgb(255 255 255 / 0.15)
      );
      --attachment-hover-color: light-dark(
        rgb(0 0 0 / 0.9),
        rgb(255 255 255 / 0.9)
      );

      > ul {
        list-style-type: none;
        padding: 0;

        > li > a {
          text-decoration: none;
          display: inline-block;
          /* Subtract the right padding (left, in RTL mode) of the container: */
          min-width: calc(100% - 4px);
          height: auto;
          margin-bottom: 1px;
          padding: 2px 0 5px;
          padding-inline-start: 4px;
          border-radius: 2px;
          color: var(--attachment-color);
          font-size: 13px;
          line-height: 15px;
          user-select: none;
          white-space: normal;
          cursor: pointer;

          &:hover {
            background-color: var(--attachment-bg-color);
            background-clip: padding-box;
            border-radius: 2px;
            color: var(--attachment-hover-color);
          }
        }
      }
    }
  }
}