.preview-panel {
  background-color: #e8edf1;
  background-image: linear-gradient(#dfe5ea 1px, transparent 1px), linear-gradient(90deg, #dfe5ea 1px, transparent 1px);
  background-size: 24px 24px;
  min-width: 0;
  padding: 24px 30px 34px;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 72px);
  overflow: hidden;
}

.preview-toolbar {
  justify-content: space-between;
  margin: 0 auto 18px;
  max-width: 794px;
  width: 100%;
}

.preview-toolbar > div {
  gap: 9px;
}

.preview-actions {
  display: flex;
  gap: 9px;
  justify-content: center;
  width: 100%;
}

.preview-mode-toggle {
  align-items: center;
  align-self: stretch;
  border-right: 1px solid #e1e6ea;
  display: flex;
  height: 100%;
}

.zoom-controls {
  align-items: center;
  background: white;
  border: 1px solid #cfd8df;
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(16, 42, 67, 0.05);
  display: flex;
  height: 40px;
  overflow: hidden;
}

.zoom-controls button {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--navy);
  display: flex;
  font-size: 17px;
  font-weight: 700;
  height: 100%;
  justify-content: center;
  min-width: 32px;
  padding: 0 9px;
  transition: background 140ms ease, color 140ms ease;
}

.zoom-controls button:hover:not(:disabled) {
  background: #edf3f6;
}

.zoom-controls .preview-mode-toggle button {
  color: #657585;
  font-size: 10px;
  min-width: 64px;
  padding: 0 10px;
}

.zoom-controls .preview-mode-toggle button + button {
  border-left: 1px solid #e8edf0;
}

.zoom-controls .preview-mode-toggle button.active,
.zoom-controls .preview-mode-toggle button.active:hover {
  background: var(--navy);
  color: white;
}

.zoom-controls button:focus-visible {
  box-shadow: inset 0 0 0 2px rgba(17, 140, 131, 0.36);
  outline: none;
}

.zoom-controls button:disabled {
  color: #aab4bd;
  cursor: default;
}

.zoom-controls #zoom-out {
  font-size: 0;
}

.zoom-controls #zoom-out::before {
  background: currentColor;
  border-radius: 999px;
  content: "";
  height: 2px;
  width: 10px;
}

.zoom-controls .zoom-value {
  border-left: 1px solid #e1e6ea;
  border-right: 1px solid #e1e6ea;
  color: #526273;
  font-size: 11px;
  min-width: 54px;
  padding: 0 7px;
}

.zoom-controls output {
  font-weight: 800;
  text-align: center;
}

.zoom-controls input[type="range"] {
  --zoom-progress: 50%;
  appearance: none;
  background: linear-gradient(to right, var(--teal) 0 var(--zoom-progress), #dce4e9 var(--zoom-progress) 100%);
  border-radius: 999px;
  height: 4px;
  margin: 0 10px;
  outline: none;
  width: 88px;
}

.zoom-controls input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  background: white;
  border: 2px solid var(--teal);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(16, 42, 67, 0.22);
  cursor: grab;
  height: 14px;
  width: 14px;
}

.zoom-controls input[type="range"]::-moz-range-thumb {
  background: white;
  border: 2px solid var(--teal);
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(16, 42, 67, 0.22);
  cursor: grab;
  height: 11px;
  width: 11px;
}

.zoom-controls input[type="range"]:focus-visible {
  box-shadow: 0 0 0 3px rgba(17, 140, 131, 0.16);
}

.zoom-controls .zoom-fit {
  border-left: 1px solid #e1e6ea;
  font-size: 10px;
  gap: 5px;
  min-width: auto;
}

.zoom-controls .zoom-fit span {
  color: var(--teal-dark);
  font-size: 13px;
}

.paper-stage {
  align-items: flex-start;
  display: block;
  flex: 1;
  margin: 0 auto;
  max-width: 100%;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 0 6px 8px;
  scrollbar-color: #b8c4cc transparent;
  scrollbar-width: thin;
  width: 100%;
}

.envelope-stage {
  --envelope-vertical-balance-space: 34px;
  align-items: flex-start;
  display: none;
  flex: 1;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 18px 12px calc(34px + var(--envelope-vertical-balance-space));
  scrollbar-color: #b8c4cc transparent;
  scrollbar-width: thin;
}

.preview-panel.is-envelope-mode .paper-stage {
  display: none;
}

.preview-panel.is-envelope-mode .envelope-stage {
  display: flex;
}

.envelope-scale {
  flex: 0 0 auto;
  margin-block: auto;
  position: relative;
}

.envelope-preview {
  aspect-ratio: 2 / 1;
  background: #ffffff;
  border: 1px solid #d5dde3;
  box-shadow: 0 14px 36px rgba(16, 42, 67, 0.16);
  container-type: inline-size;
  flex: 0 0 auto;
  max-width: 720px;
  overflow: hidden;
  position: absolute;
  transform-origin: left top;
  width: min(100%, 720px);
}

.envelope-window {
  background: #f2f5f6;
  border: 1px solid #bfc9cf;
  border-radius: 8px;
  height: 40.909%;
  left: 9.091%;
  overflow: hidden;
  padding: 0;
  position: absolute;
  top: 45.455%;
  width: 40.909%;
}

.envelope-window p {
  color: #000;
  font: 400 1.443cqw/1.3 Arial, Helvetica, sans-serif;
  left: 5.556%;
  margin: 0;
  overflow: hidden;
  position: absolute;
  right: 0;
  text-decoration: underline;
  text-overflow: clip;
  top: 11.111%;
  white-space: nowrap;
}

.envelope-window p.is-multiline {
  line-height: 1.05;
  overflow-wrap: anywhere;
  white-space: normal;
}

.envelope-window address {
  color: #111111;
  display: flex;
  flex-direction: column;
  font: 400 1.764cqw/1.15 Arial, Helvetica, sans-serif;
  font-style: normal;
  left: 5.556%;
  position: absolute;
  right: 0;
  top: 39.333%;
}

.envelope-window address strong {
  font-weight: 400;
}

.paper-stage:focus-visible,
.envelope-stage:focus-visible {
  border-radius: 8px;
  box-shadow: inset 0 0 0 2px rgba(17, 140, 131, 0.36);
  outline: none;
}

.preview-edit-target {
  border-radius: 3px;
  cursor: pointer;
  outline: 1px solid transparent;
  outline-offset: 4px;
  transition: background-color 140ms ease, outline-color 140ms ease;
}

.preview-edit-target:hover,
.preview-edit-target:focus-visible {
  background-color: rgba(0, 140, 133, 0.06);
  outline-color: rgba(0, 140, 133, 0.55);
}

.preview-edit-target:focus-visible {
  outline-width: 2px;
}

.letterhead-name.is-selected {
  background-color: rgba(0, 140, 133, 0.06);
  outline-color: rgba(0, 140, 133, 0.55);
}

.preview-text-target {
  max-width: 100%;
  width: fit-content;
}

.letterhead-name.preview-edit-target {
  pointer-events: auto;
}

.preview-mark-hotspot {
  background: transparent;
  border: 0;
  height: 22px;
  left: 0;
  padding: 0;
  pointer-events: auto;
  position: absolute;
  width: 52px;
}

.preview-mark-hotspot-fold-one {
  top: 386px;
}

.preview-mark-hotspot-punch {
  top: 550px;
}

.preview-mark-hotspot-fold-two {
  top: 783px;
}

.attachment-preview-page.preview-edit-target:hover,
.attachment-preview-page.preview-edit-target:focus-visible {
  background-color: white;
  outline-offset: -5px;
}

.paper-scale {
  flex: 0 0 auto;
  margin: 0 auto;
  position: relative;
}

.paper {
  background: var(--paper);
  box-shadow: 0 14px 40px rgba(25, 48, 67, 0.17), 0 2px 8px rgba(25, 48, 67, 0.1);
  color: #20252a;
  display: flex;
  flex-direction: column;
  font-family: Arial, Helvetica, sans-serif;
  left: 0;
  margin: 0;
  min-height: 1123px;
  padding: 57px 76px 43px 94px;
  position: relative;
  transform-origin: top left;
  top: 0;
  width: 794px;
}

.attachment-preview-pages {
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 2;
}

.attachment-preview-page {
  align-items: center;
  background: white;
  box-shadow: 0 -10px 0 #e8edf1, 0 14px 40px rgba(25, 48, 67, 0.14);
  display: flex;
  height: 1123px;
  justify-content: center;
  left: 0;
  overflow: hidden;
  padding: 0;
  pointer-events: auto;
  position: absolute;
  width: 794px;
}

.attachment-preview-page img {
  display: block;
  height: 100%;
  object-fit: contain;
  transform-origin: center;
  width: 100%;
}

.attachment-preview-page.is-quarter-turn img {
  height: 70.7%;
  max-height: none;
  max-width: none;
  width: 141.4%;
}

.pdf-page-canvas {
  background: #fff;
  display: block;
  height: auto;
  max-height: 100%;
  max-width: 100%;
  opacity: 0;
  transition: opacity 160ms ease;
  width: auto;
}

.attachment-preview-page.is-rendered .pdf-page-canvas {
  opacity: 1;
}

.attachment-preview-remove {
  align-items: center;
  background: #c9362b;
  border: 2px solid white;
  border-radius: 50%;
  box-shadow: 0 3px 12px rgba(79, 17, 12, 0.3);
  color: white;
  cursor: pointer;
  display: inline-flex;
  font: 700 19px/1 Arial, Helvetica, sans-serif;
  height: 30px;
  justify-content: center;
  padding: 0 0 2px;
  position: absolute;
  right: 16px;
  top: 16px;
  transform: scale(var(--preview-ui-scale, 1));
  transform-origin: top right;
  transition: background 140ms ease, box-shadow 140ms ease;
  width: 30px;
  z-index: 6;
}

.attachment-preview-remove:hover {
  background: #a92820;
  box-shadow: 0 4px 15px rgba(79, 17, 12, 0.38);
}

.attachment-preview-remove:focus-visible {
  outline: 3px solid rgba(201, 54, 43, 0.28);
  outline-offset: 2px;
}

.attachment-preview-status {
  align-items: center;
  color: #52616d;
  display: flex;
  flex-direction: column;
  font: 13px/1.45 Inter, Arial, sans-serif;
  gap: 8px;
  justify-content: center;
  max-width: 320px;
  min-height: 180px;
  text-align: center;
}

.attachment-preview-status strong {
  color: #1d2a34;
  font-size: 15px;
}

.attachment-preview-status i {
  animation: attachment-spin 800ms linear infinite;
  border: 2px solid #dbe4e8;
  border-radius: 50%;
  border-top-color: #008c85;
  height: 28px;
  width: 28px;
}

.attachment-preview-status.is-error strong {
  color: #a33b32;
}

@keyframes attachment-spin {
  to { transform: rotate(360deg); }
}