/* Tool artwork and control states share the same paper, ink and red palette. */
.studio-scene {
  display: block;
  width: min(100%, 274px);
  height: auto;
  margin: 0 auto 6px;
  pointer-events: none;
  overflow: visible;
}
.studio-scene g { transform-box: fill-box; transform-origin: center; }
#document-pick .studio-scene { display: none; }
[data-mode=merge] .scene-merge, [data-mode=images] .scene-images, [data-mode=pages] .scene-pages { display: block !important; }
#drop, #document-pick {
  background-color: #fffcfd;
  background-image: radial-gradient(ellipse at 50% 40%, #fff5f6 0%, transparent 65%),
                    radial-gradient(#e4d5d9 .8px, transparent .9px);
  background-size: auto, 13px 13px;
  border: 1px dashed #ddbfc6;
  border-radius: 16px;
  padding: 16px 16px 19px;
}
#document-pick .pick-caption {
  display: inline-block; float: none; background: var(--pdf-red); color: white;
  font: 600 14px Plex,Tahoma,sans-serif; padding: 10px 24px; border-radius: 10px;
}
#document-pick.drag, #drop.drag, #drop:focus-visible, #document-pick:focus-visible {
  border-color: var(--pdf-red); background-color: var(--pdf-tint);
}
.ui-glyph {
  width: 19px; height: 19px; flex: none; fill: none; stroke: currentColor;
  stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round;
}
.tool-switch button { display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 43px; }
.options label {
  display: grid; grid-template-columns: auto 1fr auto; column-gap: 6px; align-items: center;
  padding: 11px 10px; background: white;
}
.options input { grid-column: 3; grid-row: 1; margin: 0; }
.options .ui-glyph { grid-column: 1; grid-row: 1; color: var(--muted); }
.options strong { grid-column: 2; grid-row: 1; }
.options small { grid-column: 1 / -1; margin-top: 6px; }
.options label:has(:checked) .ui-glyph { color: var(--pdf-red); }
.options label:focus-within { outline: 2px solid var(--pdf-red); outline-offset: 2px; }
.options label:has(input:disabled) { cursor: default; }
summary { list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after {
  content: ''; display: inline-block; width: 6px; height: 6px;
  border: solid currentColor; border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg); margin-inline-start: 10px; vertical-align: .2em;
}
details[open] > summary::after { transform: rotate(225deg); vertical-align: 0; }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
:where(a, button, input, select, summary, textarea, [role=button]):focus-visible {
  outline: 2px solid var(--pdf-red); outline-offset: 3px;
}
:where(.control-panel, .filters, .form-body) :is(input,select,textarea):focus-visible {
  border-color: var(--pdf-red); box-shadow: 0 0 0 3px #e0001912;
}
@media (max-width: 650px) {
  .studio-scene { width: 214px; }
  .options label { grid-template-columns: 1fr auto; padding: 10px 5px; gap: 5px; }
  .options .ui-glyph { justify-self: start; margin-inline-start: 4px; }
  .options input { grid-column: 2; margin: 0 4px; }
  .options strong { grid-column: 1 / -1; grid-row: 2; text-align: center; }
  #document-pick .pick-caption { display: block; }
}
@media (hover: hover) and (pointer: fine) {
  .options label:hover:not(:has(:disabled)), .page-card:hover, .file-queue li:hover {
    border-color: #ed9ca8; background-color: #fff8f9;
  }
  :is(nav,.sidebar-bottom,.ad-content) a:hover, summary:hover { color: var(--pdf-red-hover); }
  .admin-body tbody tr:hover { background-color: #fff8f9; }
  :where(.control-panel,.filters,.form-body) :is(select,input,textarea):hover:enabled { border-color: #d59ba5; }
}
@media (prefers-reduced-motion: no-preference) {
  :root { --ease-ui: cubic-bezier(.2,.75,.25,1); }
  button, .download, .choose, .pick-caption, summary, .options label, .page-card,
  .file-queue li, nav a, .sidebar-bottom a, .ui-glyph, summary::after,
  .control-panel :is(select,input), .filters :is(input,select), .form-body :is(input,select,textarea) {
    transition: transform 170ms var(--ease-ui), background-color 160ms, color 160ms,
                box-shadow 160ms, border-color 160ms;
  }
  .brand img { transition: transform 230ms var(--ease-ui); }
  .tool:not([hidden]), .control-panel:not([hidden]), #result:not([hidden]),
  #document-result:not([hidden]), dialog[open], .admin-content > section:not([hidden]),
  details[open] > p { animation: paper-appear .24s var(--ease-ui) both; }
  .toast:not([hidden]) { animation: paper-appear .2s var(--ease-ui) both; }
  .page-card canvas { transition: transform .23s var(--ease-ui); }
  .options label:has(input:checked) .ui-glyph { animation: select-tool .25s var(--ease-ui); }
  :is(button:enabled, .download, .options label:not(:has(:disabled)), [role=button]):active {
    transform: scale(.98);
  }
  .studio-scene g { animation-duration: 2.2s; animation-iteration-count: 2; animation-timing-function: ease-in-out; }
  .art-front { animation-name: sheet-lift; }
  .art-back { animation-name: sheet-fan; }
  .art-left { animation-name: squeeze-left; }
  .art-right { animation-name: squeeze-right; }
  .art-merge-left { animation-name: join-left; }
  .art-merge-right { animation-name: join-right; }
  .art-photo-a { animation-name: photo-fan; }
  .art-photo-b { animation-name: sheet-lift; animation-delay: .12s; }
  .art-rotate { animation-name: page-tilt; }
  .art-dial { animation-name: dial-turn; }
  #drop:is(.drag,:focus-visible) g, #document-pick:is(.drag,:focus-visible) g,
  .tool:has(#progress:not([hidden])) g, .workbench[aria-busy=true] g { animation-iteration-count: infinite; }
  @keyframes paper-appear { from { opacity: .15; transform: translateY(6px); } to { opacity: 1; transform: none; } }
  @keyframes select-tool { 50% { transform: scale(1.14); } }
  @keyframes sheet-lift { 45% { transform: translateY(-5px) rotate(-3deg); } }
  @keyframes sheet-fan { 45% { transform: translate(3px, 3px) rotate(6deg); } }
  @keyframes squeeze-left { 45% { transform: translateX(14px); } }
  @keyframes squeeze-right { 45% { transform: translateX(-14px); } }
  @keyframes join-left { 50% { transform: translate(32px, -2px) rotate(9deg); } }
  @keyframes join-right { 50% { transform: translate(-32px, -2px) rotate(-9deg); } }
  @keyframes photo-fan { 45% { transform: translate(-7px,-3px) rotate(-6deg); } }
  @keyframes page-tilt { 50% { transform: rotate(-16deg) translateY(-3px); } }
  @keyframes dial-turn { 50% { transform: rotate(70deg); } }
}
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  button:enabled:hover:not(:active), .download:hover:not(:active), nav a:hover, #drop:hover .choose,
  .options label:hover:not(:active):not(:has(:disabled)) { transform: translateY(-2px); }
  #drop:hover .choose, #document-pick:hover .pick-caption,
  :is(#compress,#document-build,.primary,.download):hover:not(:disabled) { box-shadow: 0 5px 12px #a6001d25; }
  .options label:hover:not(:has(:disabled)) .ui-glyph, .tool-switch button:hover .ui-glyph { transform: rotate(-6deg); }
  .brand:hover img { transform: translateY(-2px) rotate(-7deg); }
  #drop:hover g, #document-pick:hover:enabled g { animation-iteration-count: infinite; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}