:root {
  --page-width: 7in;
  --page-height: 8.5in;
  --letter-width: 8.5in;
  --letter-height: 11in;
  --tabloid-width: 17in;
  --tabloid-height: 11in;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-width: 100%;
  min-height: 100%;
  background: #777;
}

body {
  padding: 0.25in;
  font-family: system-ui, sans-serif;
}

.print-help {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.12in 0.28in;
  margin: 0 auto 0.25in;
  padding: 0.14in 0.18in;
  max-width: 11in;
  border: 1px solid #aaa;
  background: #fff;
  color: #111;
  font-size: 10pt;
  box-shadow: 0 2px 8px rgb(0 0 0 / 18%);
}

#print-document {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25in;
}

.sheet {
  position: relative;
  flex: none;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 2px 12px rgb(0 0 0 / 28%);
  break-after: page;
  page-break-after: always;
}

.sheet:last-child {
  break-after: auto;
  page-break-after: auto;
}

.letter-sheet {
  display: grid;
  place-items: center;
  width: var(--letter-width);
  height: var(--letter-height);
}

.booklet-sheet {
  display: grid;
  grid-template-columns: var(--letter-width) var(--letter-width);
  width: var(--tabloid-width);
  height: var(--tabloid-height);
}

.booklet-half {
  position: relative;
  display: grid;
  place-items: center;
  width: var(--letter-width);
  height: var(--letter-height);
  overflow: hidden;
}

.booklet-half:first-child {
  border-right: 1px dashed #ccc;
}

/*
  Letter magazine mode is not a scaled legal page. Each physical 11 x 8.5
  sheet contains two native 5.5 x 8.5 pages. The iframe is therefore the
  exact finished page size and the page is re-typeset internally by
  letter-page.css instead of being uniformly shrunk.
*/
.letter-booklet-preview {
  --page-width: 5.5in;
  --page-height: 8.5in;
}

.letter-booklet-preview .booklet-sheet {
  grid-template-columns: 5.5in 5.5in;
  width: 11in;
  height: 8.5in;
}

.letter-booklet-preview .booklet-half {
  width: 5.5in;
  height: 8.5in;
}

.letter-booklet-preview .print-page {
  transform: none;
  transform-origin: center center;
}

.print-page {
  display: block;
  width: var(--page-width);
  height: var(--page-height);
  border: 0;
  background: #fff;
}

.sheet-label {
  position: absolute;
  right: 0.12in;
  bottom: 0.08in;
  color: #777;
  font-size: 8pt;
  pointer-events: none;
}

@media screen and (max-width: 1350px) {
  .booklet-preview .booklet-sheet {
    zoom: 0.7;
  }
}

@media screen and (max-width: 980px) {
  .booklet-preview .booklet-sheet {
    zoom: 0.5;
  }

  .letter-preview .letter-sheet {
    zoom: 0.8;
  }
}

@media print {
  html,
  body {
    min-width: 0;
    min-height: 0;
    background: #fff;
  }

  body {
    padding: 0;
  }

  .print-help,
  .sheet-label {
    display: none;
  }

  #print-document {
    display: block;
  }

  .sheet {
    margin: 0;
    box-shadow: none;
    zoom: 1 !important;
  }

  .booklet-half:first-child {
    border-right: 0;
  }
}