:root {
  color-scheme: light;
  --gq-color-ink: #111410;
  --gq-color-paper: #f3f0e8;
  --gq-color-paper-subtle: #e7e4dc;
  --gq-color-surface: #ffffff;
  --gq-color-acid: #c8f56a;
  --gq-color-text: #111410;
  --gq-color-text-muted: #55594f;
  --gq-color-separator: #b8bbb2;
  --gq-color-control-border: #60645c;
  --gq-color-danger-text: #8f2119;
  --gq-color-danger-surface: #ffe6e1;
  --gq-font-ui: "Geist", "Segoe UI", system-ui, sans-serif;
  --gq-font-data: "Geist Mono", "Cascadia Mono", ui-monospace, monospace;
  --gq-space-1: 0.25rem;
  --gq-space-2: 0.5rem;
  --gq-space-3: 0.75rem;
  --gq-space-4: 1rem;
  --gq-space-6: 1.5rem;
  --gq-space-8: 2rem;
  --gq-space-12: 3rem;
  --gq-radius-control: 0.375rem;
  --gq-radius-panel: 0.625rem;
  --gq-duration-fast: 120ms;
  /* Print-only data size: 80 code points must fit the smallest 3×8 cell. */
  --label-font-size: 9pt;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--gq-color-paper); color: var(--gq-color-text); font: 1rem/1.6 var(--gq-font-ui); }
button, input, textarea { font: inherit; color: inherit; }
button, a, input, textarea, summary, .paper-viewport { -webkit-tap-highlight-color: transparent; }
button, input, textarea { border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-control); background: var(--gq-color-surface); }
button { min-height: 44px; padding: var(--gq-space-2) var(--gq-space-4); cursor: pointer; font-weight: 600; transition: background-color var(--gq-duration-fast); }
button:hover { background: var(--gq-color-paper-subtle); }
button:active { background: var(--gq-color-separator); }
button:disabled { opacity: 0.55; cursor: default; }
button.primary { background: var(--gq-color-acid); border-color: var(--gq-color-ink); }
button.primary:hover { background: var(--gq-color-paper); }
button.primary:active { background: var(--gq-color-paper-subtle); }
a { color: inherit; text-underline-offset: 0.2em; }
:focus-visible { outline: 2px solid var(--gq-color-ink); outline-offset: 2px; box-shadow: 0 0 0 5px var(--gq-color-acid); }
.skip-link { position: absolute; left: var(--gq-space-4); top: -8rem; padding: var(--gq-space-3); background: var(--gq-color-surface); z-index: 2; }
.skip-link:focus { top: var(--gq-space-2); }
.topbar { min-height: 3.5rem; padding: var(--gq-space-2) var(--gq-space-8); border-bottom: 1px solid var(--gq-color-separator); display: flex; align-items: center; justify-content: space-between; gap: var(--gq-space-4); }
.brand { font-weight: 700; }
.brand span { font-weight: 400; color: var(--gq-color-text-muted); font-size: 0.875rem; }
nav { display: flex; align-items: center; gap: var(--gq-space-4); flex-wrap: wrap; }
nav a { display: inline-flex; min-height: 44px; align-items: center; }
nav button { background: transparent; }
main { max-width: 74rem; margin-inline: auto; padding: var(--gq-space-8); min-width: 0; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 2rem; line-height: 1.25; letter-spacing: -0.02em; font-weight: 650; }
h2 { font-size: 1.25rem; line-height: 1.4; }
h3 { font-size: 1rem; }
.introduction { max-width: 76ch; margin-bottom: var(--gq-space-8); }
.introduction > p { margin-top: var(--gq-space-3); }
.notice { padding-left: var(--gq-space-4); border-left: 3px solid var(--gq-color-control-border); color: var(--gq-color-text-muted); font-size: 0.875rem; }
#startup-note, noscript { margin-bottom: var(--gq-space-4); }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.editor > legend { font-size: 1.25rem; font-weight: 650; margin-bottom: var(--gq-space-4); }
.input-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(18rem, 1fr); gap: var(--gq-space-8); }
label { display: block; font-weight: 600; margin-bottom: var(--gq-space-2); }
textarea, input[type="text"] { padding: var(--gq-space-3); }
textarea { display: block; width: 100%; min-height: 12rem; resize: vertical; line-height: 1.5; }
#copies { display: block; width: 6rem; max-width: 100%; font-family: var(--gq-font-data); }
.help { font-size: 0.875rem; color: var(--gq-color-text-muted); margin-top: var(--gq-space-2); max-width: 80ch; }
.preset-group { margin-top: var(--gq-space-6); }
.preset-group > legend { font-weight: 600; margin-bottom: var(--gq-space-2); }
.preset-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--gq-space-2); }
.preset-choice { display: flex; align-items: flex-start; gap: var(--gq-space-2); margin: 0; padding: var(--gq-space-3); border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-control); cursor: pointer; background: var(--gq-color-surface); font-size: 0.875rem; }
.preset-choice:has(input:checked) { border-color: var(--gq-color-ink); background: var(--gq-color-acid); }
.preset-choice input { accent-color: var(--gq-color-ink); width: 1.25rem; height: 1.25rem; flex-shrink: 0; margin: 0.125rem 0 0; }
.preset-choice small { display: block; color: var(--gq-color-text-muted); font-weight: 400; font-size: 0.75rem; }
.field-error { color: var(--gq-color-danger-text); margin-top: var(--gq-space-2); font-size: 0.875rem; }
.error-summary { color: var(--gq-color-danger-text); background: var(--gq-color-danger-surface); border-left: 3px solid var(--gq-color-danger-text); margin-top: var(--gq-space-4); padding: var(--gq-space-3) var(--gq-space-4); }
[aria-invalid="true"] { border-color: var(--gq-color-danger-text); }
.form-actions { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--gq-space-3); margin-top: var(--gq-space-6); }
.secondary-actions { display: flex; gap: var(--gq-space-2); }
.data-note { font-size: 0.875rem; color: var(--gq-color-text-muted); margin-block: var(--gq-space-4) var(--gq-space-8); }
.preview-area { min-width: 0; border-block: 1px solid var(--gq-color-separator); padding-block: var(--gq-space-6); }
.preview-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--gq-space-4); }
.preview-heading button { flex-shrink: 0; }
.status { margin-block: var(--gq-space-4); font-weight: 600; }
.empty-paper { min-height: 12rem; border: 1px dashed var(--gq-color-separator); background: var(--gq-color-surface); display: grid; place-items: center; color: var(--gq-color-text-muted); }
.preview-summary { font-weight: 600; }
.scroll-help { margin-bottom: var(--gq-space-4); }
.page-preview + .page-preview { margin-top: var(--gq-space-6); }
.page-caption { margin-bottom: var(--gq-space-2); }
.paper-viewport { max-width: 100%; overflow: auto; padding: var(--gq-space-4); background: var(--gq-color-paper-subtle); border: 1px solid var(--gq-color-control-border); }
.label-sheet { background: var(--gq-color-surface); color: var(--gq-color-ink); width: 210mm; height: 297mm; padding: 10mm; margin-inline: auto; }
.label-grid { display: grid; width: 100%; height: 100%; gap: 2mm; }
.preset--a4-2x7 .label-grid, .preset--letter-2x7 .label-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(7, minmax(0, 1fr)); }
.preset--a4-3x8 .label-grid, .preset--letter-3x8 .label-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(8, minmax(0, 1fr)); }
.preset--letter-2x7, .preset--letter-3x8 { width: 215.9mm; height: 279.4mm; }
.label-cell { min-width: 0; min-height: 0; border: 0.2mm solid var(--gq-color-control-border); padding: 1.5mm; display: flex; align-items: center; justify-content: center; text-align: center; font: var(--label-font-size)/1.2 var(--gq-font-ui); overflow: hidden; }
.label-cell span { max-width: 100%; min-width: 0; overflow-wrap: anywhere; white-space: pre-wrap; unicode-bidi: plaintext; }
.print-help { margin-top: var(--gq-space-6); max-width: 80ch; }
.faq { margin-top: var(--gq-space-8); max-width: 76ch; }
.faq h2 { margin-bottom: var(--gq-space-3); }
details { border-bottom: 1px solid var(--gq-color-separator); }
summary { min-height: 44px; padding-block: var(--gq-space-3); cursor: pointer; font-weight: 600; }
details p { color: var(--gq-color-text-muted); padding-bottom: var(--gq-space-4); }
footer { max-width: 74rem; margin-inline: auto; padding: 0 var(--gq-space-8) var(--gq-space-8); font-size: 0.875rem; color: var(--gq-color-text-muted); }
dialog { max-width: 32rem; width: calc(100% - 2rem); padding: var(--gq-space-6); color: var(--gq-color-text); background: var(--gq-color-paper); border: 1px solid var(--gq-color-control-border); border-radius: var(--gq-radius-panel); }
dialog::backdrop { background: rgb(17 20 16 / 45%); }
dialog p { margin-top: var(--gq-space-3); }
.dialog-actions { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: var(--gq-space-3); margin-top: var(--gq-space-6); }

@media (min-width: 48rem) and (max-width: 74.999rem) {
  main, .topbar { padding-inline: var(--gq-space-6); }
}
@media (max-width: 47.999rem) {
  main { padding: var(--gq-space-6) var(--gq-space-4); }
  .topbar { padding-inline: var(--gq-space-4); flex-wrap: wrap; gap: var(--gq-space-2); }
  nav { gap: var(--gq-space-3); }
  h1 { font-size: 1.75rem; }
  .input-grid { grid-template-columns: minmax(0, 1fr); gap: var(--gq-space-6); }
  .preset-choice { padding: var(--gq-space-3) var(--gq-space-2); }
  .form-actions > #build { width: 100%; }
  .preview-heading { flex-direction: column; }
  .preview-heading button { width: 100%; }
  .paper-viewport { padding: var(--gq-space-2); }
  footer { padding-inline: var(--gq-space-4); }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

@page labels-a4-2x7 { size: A4 portrait; margin: 10mm; }
@page labels-a4-3x8 { size: A4 portrait; margin: 10mm; }
@page labels-letter-2x7 { size: Letter portrait; margin: 10mm; }
@page labels-letter-3x8 { size: Letter portrait; margin: 10mm; }
@media print {
  html, body { margin: 0; padding: 0; background: white; }
  .topbar, .skip-link, .introduction, form, .data-note, footer, .faq, dialog,
  #startup-note, noscript, .preview-heading, .status, .empty-paper, .preview-summary,
  .scroll-help, .page-caption, .print-help, .preview-area > .help { display: none !important; }
  main, .preview-area, #preview, #pages, .page-preview, .paper-viewport { margin: 0; padding: 0; border: 0; max-width: none; width: auto; background: white; overflow: visible; }
  .page-preview + .page-preview { margin-top: 0; }
  .label-sheet { margin: 0; padding: 0; width: 190mm; height: 277mm; break-inside: avoid; break-after: page; }
  .page-preview:last-child .label-sheet { break-after: auto; }
  .preset--a4-2x7 { page: labels-a4-2x7; }
  .preset--a4-3x8 { page: labels-a4-3x8; }
  .preset--letter-2x7 { page: labels-letter-2x7; width: 195.9mm; height: 259.4mm; }
  .preset--letter-3x8 { page: labels-letter-3x8; width: 195.9mm; height: 259.4mm; }
  .label-cell { border-color: black; color: black; }
}