/* Encoder workbench ENC-13. Instrument Sheet chassis, accent #8A4E6A (plum). */
:root{
  --paper:#EDE9E2;
  --ink:#1E1D1B;
  --panel:#DEDACF;
  --line:#B7B0A2;
  --chassis:#2A2924;
  --accent:#8A4E6A;
  --on-accent:#EDE9E2;          /* paper on plum is 5.1:1, so every size of type may sit on it; ink never does */
  --on-accent-ink:#1E1D1B;      /* the ink-filled primary button on the slab, and text on paper fields */
  --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}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* 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:60ch;margin-bottom:28px}
.lede strong{font-weight:600}
.subhead{font-size:1.375rem;font-weight:500;line-height:1.25}
.section-head{font-size:2rem;font-weight:600;line-height:1.1;margin:40px 0 14px}

/* the plum slab: the one accent shape. Tabs, both panes, the arrow and the verdict all sit on it */
.hero{position:relative;background:var(--accent);color:var(--on-accent);padding:28px 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}

/* tabs: paper-outlined rectangles, the active one filled paper */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.tab{padding:9px 16px;border:1px solid var(--on-accent);background:transparent;color:var(--on-accent);font-weight:500;line-height:1.2;cursor:pointer;border-radius:0}
.tab:hover{background:rgba(237,233,226,.14)}
.tab[aria-selected="true"]{background:var(--on-accent);color:var(--on-accent-ink)}
.tab:focus-visible{outline:2px solid var(--on-accent);outline-offset:3px}

/* the bench: pane, arrow, pane */
.bench{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:0 22px;align-items:stretch}
.pane{min-width:0;display:flex;flex-direction:column;gap:10px;position:relative}
.pane.is-crossing{transition:transform .32s var(--ease)}
.pane-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 12px;min-height:34px}
.pane-label{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;white-space:pre}
.pane-tools{display:flex;gap:8px;align-items:center}
.pane-body{position:relative;flex:1;min-height:0;display:flex}

/* the two fields: paper on the slab, ink text; the font says which side is machine */
.field-text,.field-out{display:block;width:100%;min-height:236px;height:100%;margin:0;color:var(--on-accent-ink);background:#EDE9E2;border:1px solid #EDE9E2;border-radius:0;padding:12px 14px;font-size:1.0625rem;line-height:1.45;overflow:auto}
.field-text{resize:vertical;font-family:var(--font-ui)}
.field-out{white-space:pre-wrap;overflow-wrap:anywhere;max-height:520px}
.is-code{font-family:var(--font-spec)!important;font-size:.875rem!important;line-height:1.5!important;letter-spacing:.01em}
.is-text{font-family:var(--font-ui)!important;font-size:1.0625rem!important;line-height:1.45!important}
.field-text::placeholder{color:#1E1D1B;opacity:.55}
.field-text:focus-visible{outline:2px solid var(--on-accent);outline-offset:3px}
.field-out:empty::before{content:attr(data-empty);font-family:var(--font-ui);font-size:1.0625rem;line-height:1.45;letter-spacing:0;color:#1E1D1B;opacity:.55}
.field-out.is-dim{opacity:.6}
.field-out.is-error{background:#DEDACF}
.field-out.is-just{animation:settle .22s var(--ease)}
@keyframes settle{0%{background:#DEDACF}100%{background:#EDE9E2}}

/* URL tab shows two outputs stacked in the one pane */
.out-two{display:flex;flex-direction:column;gap:10px;width:100%;min-height:236px}
.out-part{display:flex;flex-direction:column;flex:1;min-height:0}
.out-part .field-out{min-height:96px;height:100%}
.out-part-label{font-family:var(--font-spec);font-size:.6875rem;font-weight:500;letter-spacing:.02em;white-space:pre-wrap;margin-bottom:6px}
.out-part.is-chosen .field-out{border-color:#1E1D1B}
.out-error{position:absolute;left:0;right:0;bottom:0;margin:0;padding:10px 14px;background:#1E1D1B;color:#EDE9E2;font-size:.9375rem;line-height:1.4}

/* the file card replaces the textarea when a file is loaded */
.filecard{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;gap:6px 12px;align-items:center;width:100%;min-height:236px;padding:16px 18px;background:#EDE9E2;color:#1E1D1B}
.filecard-name{font-size:1.375rem;font-weight:500;line-height:1.2;overflow-wrap:anywhere;grid-column:1;grid-row:1;align-self:end}
.filecard-meta{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;grid-column:1;grid-row:2;align-self:start}
.filecard .btn{grid-column:2;grid-row:1 / span 2;align-self:center}
.pane-body.is-over .field-text{outline:2px dashed var(--on-accent);outline-offset:3px}

/* the arrow: drawn in type, and it is the swap button */
.arrow-col{display:flex;align-items:center;justify-content:center;padding-top:44px}
.arrow{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:10px 6px;border:1px solid transparent;background:transparent;color:var(--on-accent);cursor:pointer;border-radius:0;transform-style:preserve-3d}
.arrow:hover{border-color:var(--on-accent)}
.arrow:focus-visible{outline:2px solid var(--on-accent);outline-offset:3px}
.arrow-glyph{font-family:var(--font-spec);font-weight:500;font-size:1.75rem;line-height:1;margin:0;white-space:pre;letter-spacing:0}
.arrow-word{font-family:var(--font-ui);font-size:.9375rem;font-weight:500;line-height:1;align-self:center}
.arrow.is-flip .arrow-glyph{animation:flip .32s var(--ease)}
@keyframes flip{0%{transform:rotateY(0)}100%{transform:rotateY(360deg)}}

/* the verdict: one plain sentence under the panes, in paper */
.verdict{font-size:1.375rem;font-weight:500;line-height:1.25;max-width:60ch;margin-top:20px;min-height:1.25em}

/* buttons */
.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.is-done{background:var(--ink);color:var(--paper)}
.btn-small{padding:7px 12px;font-size:.9375rem}
/* on the slab: the primary is ink-filled, the secondary paper-filled; both stay AA in either scheme */
.btn-primary{background:var(--on-accent-ink);border-color:var(--on-accent-ink);color:var(--on-accent)}
.btn-primary:hover{background:var(--on-accent-ink)}
.btn-primary.is-done{background:var(--on-accent);border-color:var(--on-accent);color:var(--on-accent-ink)}
.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-paper{background:var(--on-accent);border-color:var(--on-accent);color:var(--on-accent-ink)}
.btn-paper:hover{background:#DEDACF}
.btn-paper:focus-visible,.btn-paper:has(input:focus-visible){outline:2px solid var(--on-accent);outline-offset:3px}
.btn-paper.is-done{background:var(--on-accent-ink);border-color:var(--on-accent-ink);color:var(--on-accent)}
.btn-ink{background:#EDE9E2;border-color:#1E1D1B;color:#1E1D1B}
.btn-ink:hover{background:#DEDACF}
.btn-ink:focus-visible{outline:2px solid #1E1D1B;outline-offset:2px}
label.btn{cursor:pointer}

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

/* under the slab: notes on the left, options on the right */
.under{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px 32px;margin-top:28px;align-items:start}
.left{grid-column:span 7;min-width:0}
.controls{grid-column:span 5;min-width:0}
.tabnotes p{max-width:62ch;margin:10px 0 0}
.tabnotes .subhead{margin-bottom:4px}
.diff{margin-top:18px;padding:12px 14px;border:1px solid var(--line);display:grid;gap:8px}
.diff-label{font-size:.9375rem}
.diff-list{display:flex;flex-wrap:wrap;gap:6px}
.diff-list span{display:inline-block;min-width:2.2em;padding:4px 8px;text-align:center;border:1px solid var(--ink);font-family:var(--font-spec);font-size:.8125rem;font-weight:500}

/* controls panel */
.panel{position:relative;border:1px solid var(--line);background:var(--panel);padding:24px 28px 28px;display:grid;gap:22px}
.field{min-width:0}
.field>label,.field legend{display:block;font-weight:500;margin-bottom:10px}
.field-note{font-size:.9375rem;margin-top:8px}
.kinds{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.kinds-one{grid-template-columns:1fr}
.kind{position:relative;display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--line);background:var(--paper);cursor:pointer;line-height:1.25}
.kind input{grid-row:1 / span 2;width:18px;height:18px;margin:0;accent-color:var(--accent);cursor:pointer}
.kind span{font-weight:500}
.kind small{font-size:.8125rem;opacity:.75}
.kind:has(input:checked){border-color:var(--ink);background:var(--ink);color:var(--paper)}
.kind:has(input:focus-visible){outline:2px solid var(--accent);outline-offset:2px}
.checks{display:flex;flex-direction:column;gap:6px}
.checks-gap{margin-top:10px}
.field .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}

/* 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}

/* narrow screens */
@media (max-width:960px){
  .notes>*{grid-column:span 12}
  .under{grid-template-columns:1fr}
  .left,.controls{grid-column:span 1}
  .controls{order:1}
  .left{order:2}
}
@media (max-width:760px){
  .bench{grid-template-columns:1fr;gap:12px 0}
  .arrow-col{justify-content:flex-start;padding:4px 0}
  .arrow{flex-direction:row;align-items:center;gap:14px;padding:6px 8px 6px 2px}
  .arrow-glyph{font-size:1.125rem}
  .arrow.is-flip .arrow-glyph{animation:flip-down .32s var(--ease)}
  @keyframes flip-down{0%{transform:rotateX(0)}100%{transform:rotateX(360deg)}}
  .field-text,.field-out,.filecard,.out-two{min-height:170px}
  .out-part .field-out{min-height:80px}
}
@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}
  .tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:18px}
  .tab{padding:9px 10px;font-size:.9375rem}
  .verdict{font-size:1.125rem;margin-top:16px}
  .panel{padding:20px 16px 22px;gap:20px}
  .kinds{grid-template-columns:1fr}
  .section-head{font-size:1.625rem}
  .foot{padding:16px 16px 32px}
  .filecard{grid-template-columns:1fr;grid-template-rows:auto auto auto;min-height:0}
  .filecard .btn{grid-column:1;grid-row:3;justify-self:start}
  .filecard-name{align-self:auto}
}

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