.vditor-ir {
  box-sizing: border-box;
  flex: 1;
  min-width: 1px;
  position: relative;
  width: 100%;

  &__node {
    &[data-type="code-block"]:before,
    &[data-type="code-block"]:after,
    &[data-type="yaml-front-matter"]:before,
    &[data-type="yaml-front-matter"]:after,
    &[data-type="math-block"]:before,
    &[data-type="math-block"]:after {
      content: ' ';
      color: var(--second-color);
    }

    &:not(.vditor-ir__node--expand) .vditor-ir__marker {
      padding: 0 !important;
    }

    &:not(.vditor-ir__node--expand)[data-type="a"] {
      cursor: pointer;
    }

    &[data-type="link-ref"],
    &[data-type="footnotes-ref"] {
      color: @blurColor;
    }

    &[data-type="html-block"] {
      margin-bottom: 1em;
    }

    .vditor-ir__marker {
      width: 0;
      overflow: hidden;
      display: inline-block;
      height: 0;
      transition: @transition;
    }

    &--hidden {
      .vditor-ir__marker {
        visibility: hidden;
      }
    }

    &--expand {
      .vditor-ir__marker {
        color: var(--second-color);
        display: inline;
        height: auto;
        width: auto;

        &--hide {
          display: none;
        }

        &--heading {
          color: var(--ir-heading-color);
        }

        &--bi {
          color: var(--ir-bi-color);
        }

        &--link {
          color: var(--ir-link-color);
        }

        &--title {
          color: var(--ir-title-color);
        }

        &--bracket {
          color: var(--ir-bracket-color);
          text-decoration: underline;
        }

        &--paren {
          color: var(--ir-paren-color);
        }

        &--info {
          color: var(--ir-heading-color);
        }

        &--pre code {
          color: var(--textarea-text-color);
          height: auto;
          text-align: left;
        }
      }

      &[data-type="code-block"]:before,
      &[data-type="code-block"]:after {
        content: '```';
      }

      &[data-type="yaml-front-matter"]:before,
      &[data-type="yaml-front-matter"]:after {
        content: '---';
      }

      &[data-type="math-block"]:before,
      &[data-type="math-block"]:after {
        content: '$$';
      }
    }

    span[data-type="code-block-open-marker"],
    span[data-type="code-block-close-marker"],
    span[data-type="yaml-front-matter-open-marker"],
    span[data-type="yaml-front-matter-close-marker"],
    span[data-type="math-block-open-marker"],
    span[data-type="math-block-close-marker"] {
      display: none;
    }
  }

  &__preview {
    cursor: pointer;
    white-space: initial;
    min-height: 27px;
  }

  &__link {
    color: var(--ir-bracket-color);
    text-decoration: underline;
  }

  pre.vditor-reset {
    background-color: var(--panel-background-color);
    margin: 0;
    white-space: pre-wrap;
    height: 100%;
    box-sizing: border-box;

    &[contenteditable="false"] {
      opacity: 0.3;
      cursor: not-allowed;
    }

    &:empty::before {
      content: attr(placeholder);
      color: var(--second-color);
    }

    &:focus {
      outline: none;
      background-color: var(--textarea-background-color);
    }

    &:after {
      content: "";
      height: var(--editor-bottom);
      display: block;
    }

    pre {
      margin: 0;
    }
  }

  hr {
    display: inline-block;
    margin: 12px 0;
    width: 100%;
  }

  blockquote:empty::before,
  pre > code:empty::before,
  p:empty::before,
  h1:empty::after,
  h2:empty::after,
  h3:empty::after,
  h4:empty::after,
  h5:empty::after,
  h6:empty::after {
    content: ' ';
  }

  // block title
  & .vditor-reset > h1:before,
  & .vditor-reset > h2:before,
  & .vditor-reset > h3:before,
  & .vditor-reset > h4:before,
  & .vditor-reset > h5:before,
  & .vditor-reset > h6:before,
  div[data-type="link-ref-defs-block"]:before,
  div[data-type="footnotes-block"]:before,
  .vditor-toc:before {
    float: left;
    padding-right: 4px;
    margin-left: -29px;
    content: 'H1';
    font-size: 0.85rem;
    font-weight: normal;
    color: var(--second-color);
  }

  & .vditor-reset > h2:before {
    content: 'H2';
  }

  & .vditor-reset > h3:before {
    content: 'H3';
  }

  & .vditor-reset > h4:before {
    content: 'H4';
  }

  & .vditor-reset > h5:before {
    content: 'H5';
  }

  & .vditor-reset > h6:before {
    content: 'H6';
  }

  div[data-type="link-ref-defs-block"] {
    &:before {
      content: '"A"';
    }

    color: var(--blockquote-color);
  }

  div[data-type="footnotes-block"] {
    &:before {
      content: '^F';
    }

    border-top: 2px solid var(--heading-border-color);
    padding-top: 24px;
    margin-top: 24px;

    & > div[data-type="footnotes-def"] {
      & > ul, & > ol, & > p, & > blockquote, & > pre, & > table, & > hr {
        margin-left: 8px;
      }
    }
  }


  .vditor-toc {
    &:before {
      content: "ToC";
    }

    span[data-type="toc-h"] {
      color: @blurColor;
      text-decoration: underline;
    }
  }
}

@media screen and (max-width: @max-width) {
  .vditor-ir {
    h1:before,
    h2:before,
    h3:before,
    h4:before,
    h5:before,
    h6:before,
    div[data-type="link-ref-defs-block"]:before,
    div[data-type="footnotes-block"]:before,
    .vditor-toc:before {
      content: none;
    }
  }
}