/* Halden Forge v3: a trade catalogue printed in 1898; the only colour is the heat */
:root{
  --paper:#cfbe98;
  --paper-2:#d9cbaa;
  --ink:#231a12;
  --ink-2:#4b3d2e;
  --red:#8a2313;
  --rule:rgba(35,26,18,.55);
  --serif:"Garamond","EB Garamond",Georgia,serif;
  --fell:"Fell",Georgia,serif;
  --sc:"Fell SC","Fell",Georgia,serif;
  --hand:"Hand",cursive;
  --pad:clamp(16px,4vw,48px);
  --w:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--paper);color:var(--ink);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:400 1.14rem/1.55 var(--serif);font-variant-numeric:oldstyle-nums;background:var(--paper) url(img/paper.webp) repeat;background-size:640px;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:40;background:radial-gradient(130% 100% at 50% 40%,transparent 62%,rgba(70,45,15,.22))}
img{display:block;max-width:100%;height:auto}
h1,h2,h3{font-family:var(--fell);font-weight:400;line-height:1.02;margin:0;text-wrap:balance}
p{margin:0}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:3px}
button,input,textarea{font:inherit;color:inherit}
.sc{font-family:var(--sc);letter-spacing:.04em}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
.skip{position:absolute;left:12px;top:-60px;z-index:60;background:var(--paper-2);padding:10px 14px;border:1px solid var(--ink)}
.skip:focus{top:12px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

/* masthead: a broadsheet head between double rules */
.mast{max-width:var(--w);margin:0 auto;padding:clamp(20px,3vw,34px) var(--pad) 0;text-align:center}
.mast__top{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 14px;font-size:.95rem;padding-bottom:10px;border-bottom:3px double var(--ink)}
.mast__title{font-family:var(--fell);font-size:clamp(3.2rem,9vw,6.6rem);line-height:.92;letter-spacing:-.01em;margin:clamp(10px,1.4vw,16px) 0 4px}
.mast__sub{font-size:clamp(1rem,1.5vw,1.15rem);max-width:60ch;margin:0 auto 12px}
.mast__nav{display:flex;justify-content:center;flex-wrap:wrap;gap:6px clamp(14px,3vw,40px);padding:10px 0;border-top:1px solid var(--ink);border-bottom:3px double var(--ink);font-size:1rem}
.mast__nav a{text-decoration:none}
.mast__nav a:hover{text-decoration:underline}

/* plates */
.plate{max-width:var(--w);margin:0 auto;padding:clamp(48px,7vw,96px) var(--pad) 0}
.plate__head{display:grid;grid-template-columns:auto 1fr;column-gap:clamp(16px,3vw,36px);align-items:baseline;margin-bottom:clamp(20px,3vw,32px)}
.plate__no{color:var(--red);font-size:1.15rem;grid-row:span 2}
.plate h1,.plate h2{font-size:clamp(2.3rem,5.4vw,4.2rem)}
.lede{grid-column:2;margin-top:12px;max-width:58ch;font-size:1.16rem;color:var(--ink-2)}

/* PLATE I: the scene, framed like a printed plate */
.scene{margin:0 auto;max-width:min(100%,calc((100svh - 260px) * 2.07));border:1px solid var(--ink);outline:3px solid var(--ink);outline-offset:5px;background:rgba(255,248,230,.18);touch-action:manipulation;-webkit-user-select:none;user-select:none}
.scene__svg{display:block;width:100%;height:auto;cursor:pointer}
.scene figcaption{text-align:center;font-size:.98rem;padding:8px 10px;border-top:1px solid var(--ink)}
.ink{fill:var(--ink)}
.ink-line{stroke:var(--ink);stroke-width:2;fill:none}
.ink-stroke{fill:none;stroke:var(--ink);stroke-width:14;stroke-linecap:round;stroke-linejoin:round}
.ink-stroke.thick{stroke-width:12}
.paper{fill:var(--paper)}
.paper-line{stroke:var(--paper);stroke-width:3;fill:none;stroke-linecap:round}
.paper-line.thin{stroke-width:2}
.paper-dots{stroke:var(--paper);stroke-width:5;stroke-linecap:round;fill:none}
.hatch-line{stroke:var(--ink);stroke-width:1.6;opacity:.75}
.coalglow{fill:#3a1208}
.flames path{fill:#e86a1e;stroke:var(--ink);stroke-width:2}
.flames{opacity:0}
.barglow{fill:#ff7a20;opacity:0;mix-blend-mode:multiply}
.bar-hi{fill:none;stroke:var(--paper);stroke-width:2;stroke-linecap:round;opacity:.65}
.sparks line{stroke-linecap:round}
.cut .flame{fill:#d0601c}

/* the bench under the plate: controls, heat gauge, progress */
.bench{display:grid;grid-template-columns:auto minmax(220px,1fr) minmax(0,1.3fr);gap:clamp(16px,3vw,36px);align-items:start;margin-top:clamp(22px,3vw,30px);padding-top:18px;border-top:1px solid var(--rule)}
.bench__acts{display:grid;gap:10px}
.act{appearance:none;border:2px solid var(--ink);background:var(--paper-2);padding:14px 20px;min-height:52px;font-family:var(--sc);letter-spacing:.04em;font-size:1.06rem;cursor:pointer;box-shadow:3px 3px 0 var(--ink);transition:transform .08s,box-shadow .08s,background-color .2s;touch-action:none;-webkit-user-select:none;user-select:none}
.act:active,.act.is-down{transform:translate(3px,3px);box-shadow:0 0 0 var(--ink)}
.act--bellows.is-down{background:#e9a66a}
.act--strike{background:var(--ink);color:var(--paper)}
.gauge__scale{position:relative;height:18px;border:1px solid var(--ink);background:linear-gradient(90deg,#231a12 0%,#4a0e06 20%,#7d1508 36%,#b8240c 52%,#e8561a 68%,#ffb03a 84%,#fff1c4 100%)}
.gauge__scale i{position:absolute;top:-7px;bottom:-7px;width:3px;margin-left:-1.5px;left:0;background:var(--ink);box-shadow:0 0 0 2px var(--paper)}
.gauge__names{display:flex;justify-content:space-between;margin-top:6px;font-size:.82rem;font-style:italic;color:var(--ink-2)}
.msg{font:italic 1.3rem/1.3 var(--fell);min-height:2.6em}
.steps{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 22px}
.steps li{display:flex;align-items:center;gap:8px;font-family:var(--sc);letter-spacing:.04em}
.steps b{display:inline-flex;gap:3px}
.steps b i{width:10px;height:10px;border:1px solid var(--ink);transform:rotate(45deg)}
.steps b i.on{background:var(--red);border-color:var(--red)}
.bench__small{margin-top:12px;font-size:.92rem;color:var(--ink-2)}
.linkish{border:0;background:none;padding:0;text-decoration:underline;text-underline-offset:3px;cursor:pointer;font-size:inherit;color:inherit}
.done{grid-column:1/-1;border:1px solid var(--ink);outline:1px solid var(--ink);outline-offset:3px;padding:18px 20px;background:rgba(255,248,230,.35);display:grid;gap:6px;justify-items:start}
.done__t{font:400 1.8rem/1.1 var(--fell);color:var(--red)}
.done[hidden]{display:none}

/* PLATE II: catalogue */
.cat{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--ink);border-left:1px solid var(--ink)}
.item{padding:clamp(16px,2vw,26px);border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);display:grid;grid-template-rows:auto auto auto 1fr auto auto;gap:4px}
.cut{width:100%;height:auto;max-height:150px;margin-bottom:8px}
.item__no{color:var(--red);font-size:.95rem}
.item h3{font-size:1.6rem}
.item__d{font-style:italic;color:var(--ink-2)}
.item__p{display:flex;align-items:baseline;gap:6px;margin-top:8px;flex-wrap:wrap}
.item__p .leader{flex:1;border-bottom:2px dotted var(--ink);transform:translateY(-4px);min-width:30px}
.item__p b{font-weight:600;color:var(--red);font-size:1.25rem;font-variant-numeric:lining-nums}
.item__p small{width:100%;text-align:right;font-style:italic;color:var(--ink-2)}
.stamp{justify-self:start;margin-top:10px;appearance:none;cursor:pointer;background:transparent;border:2px solid var(--red);color:var(--red);font-family:var(--sc);letter-spacing:.04em;font-size:.98rem;padding:8px 14px;min-height:44px;transform:rotate(-1.2deg);transition:background-color .2s,color .2s,transform .15s}
.stamp:hover{background:var(--red);color:var(--paper)}
.stamp:active{transform:rotate(-1.2deg) scale(.97)}
.stamp.is-added{background:var(--red);color:var(--paper)}

/* PLATE III: the smith */
.smith{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(22px,4vw,48px);align-items:start}
.engr{margin:0}
.engr img{mix-blend-mode:multiply;border:1px solid var(--ink)}
.engr figcaption{margin-top:8px;font-size:.95rem;text-align:center}
.engr--tall{grid-row:span 2}
.cols{columns:2 18ch;column-gap:32px;column-rule:1px solid var(--rule)}
.cols p+p{margin-top:.8em;text-indent:1.4em}
.dropcap::first-letter{float:left;font-family:var(--fell);font-size:4.4em;line-height:.8;padding:.06em .08em 0 0;color:var(--red)}
.particulars{break-inside:avoid;width:100%;margin-top:1.2em;border-collapse:collapse;font-size:1rem}
.particulars caption{text-align:left;padding-bottom:4px;border-bottom:3px double var(--ink)}
.particulars th{text-align:left;font-weight:600;padding:6px 10px 6px 0;vertical-align:top;white-space:nowrap}
.particulars td{padding:6px 0;font-style:italic}
.particulars tr{border-bottom:1px solid var(--rule)}

/* PLATE IV: the order slip, a lighter sheet with a torn top */
.slip{max-width:760px;margin:0 auto;background:#e7dcc2;padding:clamp(20px,4vw,40px);box-shadow:0 18px 30px -18px rgba(40,25,10,.55),0 1px 0 rgba(0,0,0,.2);transform:rotate(-.6deg);position:relative;border-top:2px dashed rgba(35,26,18,.45)}
.slip::before{content:"";position:absolute;inset:0;background:url(img/paper.webp);background-size:640px;opacity:.28;mix-blend-mode:multiply;pointer-events:none}
.slip>*{position:relative}
.slip__head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-bottom:10px;border-bottom:3px double var(--ink)}
.slip__lines{list-style:none;margin:0;padding:6px 0;min-height:120px;background:repeating-linear-gradient(transparent 0 43px,rgba(60,90,140,.28) 43px 44px)}
.slip__lines li{display:flex;justify-content:space-between;gap:12px;align-items:baseline;font:1.08rem/44px var(--hand);color:#22324f}
.slip__lines li button{border:0;background:none;font:.9rem var(--serif);color:var(--red);cursor:pointer;text-decoration:underline;padding:0 4px;min-height:32px}
.slip__lines .slip__empty{font:italic 1.05rem/44px var(--serif);color:var(--ink-2)}
.slip__total{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--ink);padding-top:10px;font-size:1.1rem}
.hand{font-family:var(--hand);color:#22324f;font-size:1.3rem}
.slip__fields{display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;margin-top:22px}
.field{display:grid;gap:4px}
.field--wide{grid-column:1/-1}
.field label{font-size:.95rem}
.field input,.field textarea{border:0;border-bottom:1.5px solid var(--ink);background:transparent;padding:8px 2px;font:1.1rem var(--hand);color:#22324f;border-radius:0}
.field textarea{border:1.5px solid var(--rule);padding:8px}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--red);background:rgba(255,250,235,.4)}
.field input[aria-invalid="true"]{border-color:var(--red)}
.err{color:var(--red);font-style:italic;font-size:.95rem}
.stamp--big{margin-top:20px;font-size:1.1rem;padding:12px 20px;border-width:3px}
.slip__note{margin-top:10px;font-size:.9rem;font-style:italic;color:var(--ink-2)}
.slip.is-sent .stamp--big{background:var(--red);color:var(--paper)}

.colophon{max-width:var(--w);margin:clamp(56px,8vw,96px) auto 0;padding:18px var(--pad) 34px;border-top:3px double var(--ink);text-align:center;display:grid;gap:4px;font-size:.95rem}

/* credits page */
.cr{max-width:760px;margin:0 auto;padding:56px var(--pad)}
.cr h1{font-size:2.8rem;margin:20px 0 14px}
.cr ul{margin-top:22px;padding-left:18px;display:grid;gap:12px}
.cr__muted{color:var(--ink-2)}

/* reveal */
.js .rv{opacity:0;transform:translateY(14px);transition:opacity .8s ease,transform .8s ease}
.js .rv.in{opacity:1;transform:none}

@media (max-width:980px){
  .bench{grid-template-columns:1fr 1fr}
  .bench__read{grid-column:1/-1}
  .cat{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  body{font-size:1.08rem}
  .plate__head{grid-template-columns:1fr}
  .plate__no{grid-row:auto;margin-bottom:4px}
  .lede{grid-column:1}
  .scene{outline-offset:3px}
  .bench{grid-template-columns:1fr}
  .bench__acts{grid-template-columns:1fr 1fr}
  .act{padding:12px 10px;font-size:1rem}
  .cat{grid-template-columns:1fr}
  .smith{grid-template-columns:1fr}
  .engr--tall{grid-row:auto;max-width:420px}
  .cols{columns:1}
  .slip__fields{grid-template-columns:1fr}
  .gauge__names{font-size:.74rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
}
.scene__svg.shake{animation:jolt .18s ease-out}
@keyframes jolt{30%{transform:translateY(2px)}60%{transform:translateY(-1px)}100%{transform:none}}

/* plate I head sits on one line so the plate and bench fit one screen */
.plate--fire{padding-top:clamp(20px,3vw,34px)}
.plate--fire .plate__head{grid-template-columns:auto auto 1fr;align-items:end;margin-bottom:16px}
.plate--fire .plate__no{grid-row:auto}
.plate--fire h1{font-size:clamp(2.1rem,3.8vw,3.2rem)}
.plate--fire .lede{grid-column:auto;margin:0;font-size:1.02rem;max-width:52ch}
.plate--fire .bench{max-width:min(100%,calc((100svh - 260px) * 2.07 + 120px));margin-left:auto;margin-right:auto}
@media (max-width:980px){.plate--fire .plate__head{grid-template-columns:auto 1fr}.plate--fire .lede{grid-column:1/-1;margin-top:8px}}
@media (max-width:760px){.plate--fire .plate__head{grid-template-columns:1fr}.scene{max-width:100%}}