/* QR code designer QRC-24. Instrument Sheet chassis, accent #8E2E2E (oxblood). */
:root{
  --paper:#EDE9E2;
  --ink:#1E1D1B;
  --panel:#DEDACF;
  --line:#B7B0A2;
  --chassis:#2A2924;
  --accent:#8E2E2E;
  --on-accent:#EDE9E2;          /* paper on oxblood is 6.8:1 */
  --on-accent-fill:#1E1D1B;     /* the paper-filled primary button inside the slab carries ink type */
  --font-ui:"Familjen Grotesk",system-ui,sans-serif;
  --font-spec:"Martian Mono",ui-monospace,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
}
@media (prefers-color-scheme:dark){
  :root{--paper:#1E1D1B;--ink:#EDE9E2;--panel:#2A2924;--line:#4A473F;--chassis:#111}
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-ui);font-size:1rem;line-height:1.55;overflow-x:hidden}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
button{font:inherit;color:inherit}
h1,h2,h3,p,dl,dd,ol,ul,figure,pre,fieldset{margin:0}
fieldset{padding:0;border:0;min-width:0}
legend{padding:0}
[hidden]{display:none!important}
code{font-family:var(--font-spec);font-size:.8em}

/* label strip */
.strip{max-width:1120px;margin:0 auto;padding:18px 32px 0;display:flex;justify-content:space-between;align-items:baseline;font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;border-bottom:1px solid var(--line)}
.strip-maker{text-decoration:none;padding-bottom:12px}
.strip-maker:hover{text-decoration:underline;text-underline-offset:3px}
.strip-code{padding-bottom:12px}

/* page */
.wrap{max-width:1120px;margin:0 auto;padding:40px 32px 0}
.title{font-size:4.5rem;font-weight:600;line-height:1;letter-spacing:-.01em;margin-bottom:16px}
.lede{font-size:1.125rem;max-width:58ch;margin-bottom:28px}
.section-head{font-size:2rem;font-weight:600;line-height:1.1;margin:40px 0 14px}

/* the oxblood slab: the label printer, the one accent shape, the hero */
.hero{position:relative;background:var(--accent);color:var(--on-accent);padding:32px 40px 32px}
.hero::before,.hero::after,.hero>.ticks::before,.hero>.ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--on-accent);pointer-events:none;z-index:2}
.hero::before{top:0;left:0;border-top-width:1px;border-left-width:1px}
.hero::after{top:0;right:0;border-top-width:1px;border-right-width:1px}
.hero>.ticks::before{bottom:0;left:0;border-bottom-width:1px;border-left-width:1px}
.hero>.ticks::after{bottom:0;right:0;border-bottom-width:1px;border-right-width:1px}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px 40px;align-items:start}
.editor{min-width:0}

/* kind tabs, paper-outlined inside the slab */
.kinds{display:inline-flex;flex-wrap:wrap;border:1px solid var(--on-accent);margin-bottom:22px}
.tab{padding:9px 16px;border:0;background:transparent;color:var(--on-accent);font-weight:500;cursor:pointer;border-radius:0;line-height:1.2}
.tab+.tab{border-left:1px solid var(--on-accent)}
.tab.is-on{background:var(--on-accent);color:var(--accent)}
.tab:focus-visible{outline-color:var(--on-accent);outline-offset:-3px}

/* fields inside the slab: paper labels on the printer body */
.pane{min-height:170px}
.f{display:block;margin-bottom:14px;min-width:0}
.f>span{display:block;font-weight:500;margin-bottom:6px}
.f input,.f textarea,.f select{display:block;width:100%;padding:11px 12px;border:1px solid var(--on-accent);background:var(--on-accent);color:var(--on-accent-fill);font:inherit;line-height:1.3;border-radius:0;margin:0}
.f textarea{resize:vertical;min-height:2.6em}
.f select{-webkit-appearance:none;appearance:none;padding-right:34px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%231E1D1B' stroke-width='1.5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
.f input:focus-visible,.f textarea:focus-visible,.f select:focus-visible{outline:2px solid var(--on-accent);outline-offset:2px}
.f input::placeholder,.f textarea::placeholder{color:#1E1D1B;opacity:.45}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.help{font-size:.9375rem;opacity:.85;max-width:60ch}
.f-check{margin:0 0 14px;align-self:end;padding-bottom:12px}
.hero .check input{accent-color:var(--on-accent)}
.hero .check input:focus-visible{outline-color:var(--on-accent)}

/* buttons */
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.hero-actions{margin-top:18px}
.btn{position:relative;display:inline-block;padding:12px 18px;border:1px solid var(--ink);background:var(--paper);color:var(--ink);font-weight:500;line-height:1.2;cursor:pointer;border-radius:0;text-decoration:none}
.btn:hover{background:var(--panel)}
.btn:disabled{opacity:.45;cursor:default}
.btn-small{padding:6px 10px;font-size:.9375rem}
/* inside the slab: the primary is paper-filled, the rest paper-outlined */
.btn-primary{background:var(--on-accent);border-color:var(--on-accent);color:var(--on-accent-fill)}
.btn-primary:hover{background:var(--on-accent)}
.btn-primary .ticks{position:absolute;inset:0;pointer-events:none}
.btn-primary::before,.btn-primary::after,.btn-primary .ticks::before,.btn-primary .ticks::after{content:"";position:absolute;width:14px;height:14px;border:0 solid var(--on-accent);opacity:0;pointer-events:none}
.btn-primary::before{top:-6px;left:-6px;border-top-width:1px;border-left-width:1px}
.btn-primary::after{top:-6px;right:-6px;border-top-width:1px;border-right-width:1px}
.btn-primary .ticks::before{bottom:-6px;left:-6px;border-bottom-width:1px;border-left-width:1px}
.btn-primary .ticks::after{bottom:-6px;right:-6px;border-bottom-width:1px;border-right-width:1px}
.btn-primary:hover::before,.btn-primary:hover::after,.btn-primary:hover .ticks::before,.btn-primary:hover .ticks::after,
.btn-primary:focus-visible::before,.btn-primary:focus-visible::after,.btn-primary:focus-visible .ticks::before,.btn-primary:focus-visible .ticks::after{opacity:1}
.btn-primary:focus-visible{outline-color:var(--on-accent);outline-offset:4px}
.btn-inv{background:transparent;border-color:var(--on-accent);color:var(--on-accent)}
.btn-inv:hover{background:rgba(237,233,226,.12)}
.btn-inv:focus-visible{outline-color:var(--on-accent)}
.btn-inv.is-done,.btn-primary.is-done{background:var(--on-accent);color:var(--accent)}
.warn{margin-top:14px;padding:10px 12px;border:1px solid var(--on-accent);font-size:.9375rem;max-width:60ch}

/* the label: paper tile the code prints on */
.label-col{min-width:0}
.label{position:relative;width:100%;max-width:440px;aspect-ratio:1/1;background:#FFFFFF;margin-left:auto}
.label canvas{display:block;width:100%;height:100%}
.label-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;text-align:center;color:#1E1D1B;font-size:1.25rem;font-weight:500}
.label-hint{max-width:440px;margin:12px 0 0 auto;font-size:.9375rem;opacity:.85}

/* reading line */
.reading{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;white-space:pre;margin:12px 0 0;overflow-x:auto}

/* controls panel */
.panel{position:relative;border:1px solid var(--line);background:var(--panel);padding:24px 32px 28px}
.controls{margin-top:24px}
.opts{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:26px 32px}
.field{grid-column:span 4;min-width:0}
.field-look{grid-column:span 8}
.field-logo{grid-column:span 4}
.field>label,.field legend{display:block;font-weight:500;margin-bottom:10px}
.seg-row{display:flex;flex-wrap:wrap;gap:6px 18px;margin-bottom:10px}
.check{display:flex;align-items:center;gap:10px;margin:0;font-weight:400;cursor:pointer;line-height:1.3}
.check input{width:18px;height:18px;margin:0;flex:0 0 auto;accent-color:var(--accent);cursor:pointer}
.check input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.field .f-check{margin:4px 0 0;padding:0;font-weight:400}
.help-panel{opacity:1;font-size:.9375rem;max-width:44ch}

/* colour presets: paper chip with an ink block, the module-in-a-quiet-zone motif */
.presets{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.preset{display:inline-flex;align-items:center;gap:8px;padding:6px 10px 6px 6px;border:1px solid var(--line);background:var(--paper);color:var(--ink);cursor:pointer;border-radius:0;font-size:.9375rem;line-height:1.2}
.preset:hover{border-color:var(--ink)}
.preset.is-on{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.preset i{display:block;width:26px;height:26px;border:1px solid var(--line);padding:5px}
.preset i b{display:block;width:100%;height:100%}
.swatches{display:flex;flex-wrap:wrap;gap:10px 24px}
.swatch{display:inline-flex;align-items:center;gap:10px;cursor:pointer}
.swatch input[type=color]{-webkit-appearance:none;appearance:none;width:34px;height:34px;padding:0;border:1px solid var(--ink);background:none;cursor:pointer;border-radius:0}
.swatch input[type=color]::-webkit-color-swatch-wrapper{padding:0}
.swatch input[type=color]::-webkit-color-swatch{border:0;border-radius:0}
.swatch input[type=color]::-moz-color-swatch{border:0;border-radius:0}
.swatch span{font-weight:500}
.swatch code{font-size:.75rem}

/* logo drop */
.drop{position:relative;border:1px dashed var(--line);background:var(--paper);padding:16px;min-height:96px;display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.drop.is-over{border-color:var(--accent);border-style:solid}
.drop p{font-size:.9375rem;max-width:34ch}
.drop img{display:block;width:64px;height:64px;object-fit:contain;border:1px solid var(--line);background:#fff}
.linkish{border:0;background:none;padding:0;color:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer;font:inherit}
.field-range{margin-top:12px}
.val{font-weight:600;font-size:1.375rem;margin-left:6px;font-variant-numeric:tabular-nums}
.val-unit{font-weight:400;margin-left:6px;font-size:.9375rem}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:28px;background:transparent;margin:0;cursor:pointer}
input[type=range]:focus{outline:none}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--ink)}
input[type=range]::-moz-range-track{height:2px;background:var(--ink)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:22px;height:22px;margin-top:-10px;border:1px solid var(--ink);border-radius:0;background:var(--accent)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border:1px solid var(--ink);border-radius:0;background:var(--accent)}
input[type=range]:focus-visible::-webkit-slider-thumb{outline:2px solid var(--accent);outline-offset:2px}
input[type=range]:focus-visible::-moz-range-thumb{outline:2px solid var(--accent);outline-offset:2px}
.range-ends{display:flex;justify-content:space-between;font-family:var(--font-spec);font-size:.75rem;font-weight:500;margin-top:2px}

/* notes */
.notes{display:grid;grid-template-columns:repeat(12,minmax(0,1fr))}
.notes>*{grid-column:span 8}
.notes p{max-width:68ch;margin-bottom:14px}

.foot{max-width:1120px;margin:0 auto;padding:20px 32px 40px;font-size:.875rem;opacity:.8}
.foot p{max-width:70ch}

/* phones and narrow screens */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .label,.label-hint{margin-left:0}
  .notes>*{grid-column:span 12}
  .field,.field-look,.field-logo{grid-column:span 6}
}
@media (max-width:640px){
  .strip{padding:14px 16px 0}
  .wrap{padding:28px 16px 0}
  .title{font-size:2.75rem}
  .lede{font-size:1rem}
  .hero{padding:20px 16px 22px}
  .hero-grid{gap:20px}
  .kinds{display:flex}
  .tab{flex:1 1 auto;padding:9px 8px;font-size:.9375rem}
  .f2{grid-template-columns:1fr}
  .pane{min-height:0}
  .label{max-width:none}
  .panel{padding:20px 16px 22px}
  .field,.field-look,.field-logo{grid-column:span 12}
  .opts{gap:22px}
  .reading{white-space:normal;font-size:.7rem}
  .section-head{font-size:1.625rem}
  .foot{padding:16px 16px 32px}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}