/* Hash generator HSH-14. Instrument Sheet chassis, accent #3E4E5E (gunmetal). */
:root{
  --paper:#EDE9E2;
  --ink:#1E1D1B;
  --panel:#DEDACF;
  --line:#B7B0A2;
  --chassis:#2A2924;
  --accent:#3E4E5E;
  --on-accent:#EDE9E2;          /* paper on gunmetal is 6.9:1, so every size of type may sit on it */
  --on-accent-ink:#1E1D1B;      /* the ink-filled primary button on the slab */
  --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 gunmetal slab: the one accent shape. Output on top, input below, one instrument */
.hero{position:relative;background:var(--accent);color:var(--on-accent);padding:44px 40px 36px}
.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}

/* the file progress rule: a paper line that sweeps the top edge of the slab while a file is read */
.prog{position:absolute;top:0;left:0;right:0;height:6px;background:rgba(237,233,226,.18)}
.prog i{display:block;height:100%;width:0;background:var(--on-accent);transition:width .12s linear}

/* the digest, enormous: machine output, so the spec face is allowed. 8-char groups wrap as units */
.digest{display:block;font-family:var(--font-spec);font-weight:500;font-size:clamp(1.35rem,3vw,2.4rem);line-height:1.3;letter-spacing:.01em;min-height:1.3em;margin-bottom:14px;-webkit-user-select:all;user-select:all;word-break:break-all}
.digest .g{display:inline-block;white-space:nowrap;margin-right:.45em}
.digest .g:last-child{margin-right:0}
.digest .c{display:inline-block;min-width:.62em;text-align:center}
.digest .c.is-spin{opacity:.72}
.digest.is-busy .c{opacity:.6}
.decode{font-size:1.5rem;font-weight:500;line-height:1.25;max-width:52ch;margin-bottom:24px;min-height:1.25em}

/* the feed: text on the left, file on the right, both sit on the slab */
.feed{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:16px;margin-bottom:22px}
.feed-text,.feed-file{min-width:0}
textarea.text{display:block;width:100%;min-height:126px;resize:vertical;font:inherit;font-size:1.0625rem;line-height:1.45;color:var(--on-accent-ink);background:#EDE9E2;border:1px solid #EDE9E2;border-radius:0;padding:12px 14px}
textarea.text::placeholder{color:#1E1D1B;opacity:.55}
textarea.text:focus-visible{outline:2px solid var(--on-accent);outline-offset:3px}
textarea.text:disabled{opacity:.5}
.drop{display:flex;flex-direction:column;justify-content:center;gap:4px;min-height:126px;height:100%;padding:14px 16px;border:1px dashed var(--on-accent);color:var(--on-accent);cursor:pointer;text-align:left;transition:background .15s var(--ease)}
.drop:hover,.drop.is-over{background:rgba(237,233,226,.12)}
.drop.is-over{border-style:solid}
.drop:has(input:focus-visible){outline:2px solid var(--on-accent);outline-offset:3px}
.drop-big{font-size:1.375rem;font-weight:500;line-height:1.2}
.drop-small{font-size:.9375rem;opacity:.9}
.filecard{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;gap:4px 12px;align-items:center;min-height:126px;height:100%;padding:14px 16px;border:1px solid var(--on-accent)}
.filecard-name{font-size:1.25rem;font-weight:500;line-height:1.2;overflow-wrap:anywhere;grid-column:1;grid-row:1}
.filecard-size{font-family:var(--font-spec);font-size:.75rem;font-weight:500;letter-spacing:.02em;grid-column:1;grid-row:2}
.filecard .btn{grid-column:2;grid-row:1 / span 2;align-self:center}

/* buttons */
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.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:8px 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{outline-color:var(--on-accent)}
.btn-paper.is-done{background:var(--on-accent-ink);border-color:var(--on-accent-ink);color:var(--on-accent)}
.hint{font-size:1.25rem;font-weight:500;margin-left:6px}

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

/* the bench: compare + sheet on the left, settings on the right */
.bench{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px 32px;margin-top:24px;align-items:start}
.left{grid-column:span 7;min-width:0;display:grid;gap:32px}
.controls{grid-column:span 5;min-width:0}

/* compare: a paper field that turns gunmetal on a match */
.compare-note{font-size:.9375rem;margin:6px 0 12px}
.compare{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:stretch;border:1px solid var(--line);background:var(--paper);transition:background .2s var(--ease),border-color .2s var(--ease)}
.compare .mono{border:0;background:transparent;padding:12px 14px;color:inherit}
.compare .mono:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.verdict{display:flex;align-items:center;padding:0 14px;font-weight:600;font-size:1.125rem;white-space:nowrap;border-left:1px solid var(--line)}
.verdict:empty{display:none}
.compare.is-match{background:var(--accent);border-color:var(--accent);color:#EDE9E2}
.compare.is-match .mono::placeholder{color:#EDE9E2}
.compare.is-match .mono:focus-visible{outline-color:#EDE9E2}
.compare.is-match .verdict{border-left-color:rgba(237,233,226,.5)}
.compare.is-miss{border-color:var(--ink)}
.compare.is-miss .verdict{border-left-color:var(--ink)}
.compare.is-match.is-stamp .verdict{animation:stamp .28s var(--ease) both}
@keyframes stamp{0%{transform:scale(1.35);opacity:0}60%{transform:scale(.96);opacity:1}100%{transform:none}}

/* the sheet: one row per algorithm, click a row to copy */
.sheet-bar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px 16px;margin-bottom:8px}
.sheet-note{font-size:.9375rem;margin-bottom:12px}
.sheet{list-style:none;padding:0;margin:0;border:1px solid var(--line);background:var(--paper)}
.sheet li{border-bottom:1px solid var(--line)}
.sheet li:last-child{border-bottom:0}
.row{display:grid;grid-template-columns:7ch minmax(0,1fr);gap:0 14px;width:100%;padding:9px 14px;border:0;background:transparent;text-align:left;font-family:var(--font-spec);font-size:.8125rem;font-weight:500;line-height:1.35;cursor:pointer;border-radius:0;color:var(--ink)}
.row:hover{background:var(--panel)}
.row:focus-visible{outline-offset:-3px}
.row .n{opacity:.7}
.row .v{overflow-wrap:anywhere;min-width:0}
.row .v.is-cur{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px}
.row .v.is-off{opacity:.55}
.row.is-done{background:var(--accent);color:#EDE9E2}
.row.is-done .v.is-cur{text-decoration-color:#EDE9E2}

/* 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}
.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}
.mono{font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:0;padding:8px 10px;min-width:0;width:100%;font-family:var(--font-spec);font-size:.8125rem;font-weight:500;letter-spacing:.02em}
.mono:focus-visible{outline:2px solid var(--accent);outline-offset:0}
.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:disabled{cursor:default}
.check input:disabled+span{opacity:.5}
.check input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.keyrow{margin-top:12px}
.keyrow>label{display:block;font-weight:500;margin-bottom:8px}

/* 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}
  .bench{grid-template-columns:1fr}
  .left,.controls{grid-column:span 1}
  .controls{order:1}
  .left{order:2}
}
@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:24px 18px 22px}
  .digest{font-size:1.25rem;margin-bottom:12px}
  .digest .g{margin-right:.5em}
  .decode{font-size:1.25rem;margin-bottom:18px}
  .feed{grid-template-columns:1fr}
  textarea.text{min-height:110px}
  .drop,.filecard{min-height:0;height:auto;padding:12px 14px}
  .drop-big{font-size:1.125rem}
  .hint{display:none}
  .panel{padding:20px 16px 22px;gap:20px}
  .kinds{grid-template-columns:1fr}
  .row{grid-template-columns:6ch minmax(0,1fr);gap:0 10px;padding:8px 10px;font-size:.75rem}
  .compare{grid-template-columns:1fr}
  .verdict{border-left:0;border-top:1px solid var(--line);padding:8px 14px}
  .compare.is-match .verdict{border-top-color:rgba(237,233,226,.5)}
  .section-head{font-size:1.625rem}
  .foot{padding:16px 16px 32px}
}

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