/* ══════════════════════════════════════════════════════════════
   IRON TECHNOLOGIES — site.css
   Light industrial system · Space Grotesk + IBM Plex Mono
   ══════════════════════════════════════════════════════════════ */

:root{
  --bg:#FAFAF8;
  --paper:#FFFFFF;
  --ink:#10151F;
  --navy:#16233F;
  --navy-deep:#0F1830;
  --copper:#B0602B;
  --copper-b:#C9793F;
  --line:#E5E3DD;
  --line-dark:rgba(255,255,255,.14);
  --mut:#5A6272;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --sans:'Space Grotesk',sans-serif;
  --ease:cubic-bezier(.2,.65,.15,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;padding-top:72px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
::selection{background:var(--copper);color:#fff}

.wrap{max-width:1280px;margin:0 auto;padding:0 40px}
.sec{padding:110px 0}
.hairline{border:0;border-top:1px solid var(--line)}

/* ── type ── */
.mono-label{font:500 11px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--copper)}
.mono-dim{font:400 11px/1.7 var(--mono);letter-spacing:.08em;color:var(--mut)}
.display{font:500 clamp(42px,5.6vw,78px)/1.02 var(--sans);letter-spacing:-.032em;color:var(--ink);text-wrap:balance}
.h2{font:500 clamp(30px,3.6vw,48px)/1.08 var(--sans);letter-spacing:-.026em;color:var(--ink);text-wrap:balance}
.h3{font:500 clamp(20px,2.2vw,26px)/1.2 var(--sans);letter-spacing:-.015em;color:var(--ink)}
.lede{font:400 clamp(16px,1.5vw,19px)/1.65 var(--sans);color:var(--mut);text-wrap:pretty}
.body-copy{font:400 15.5px/1.75 var(--sans);color:var(--mut);text-wrap:pretty}

/* line-mask headline reveal */
.lr{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.lr>span{display:block;transform:translateY(112%);transition:transform 1s var(--ease)}
.lr.in>span{transform:none}

/* ── buttons ── */
.btn{display:inline-flex;align-items:center;gap:12px;background:var(--ink);color:#fff;font:600 12.5px var(--mono);letter-spacing:.14em;text-transform:uppercase;padding:17px 28px;border:1px solid var(--ink);cursor:pointer;transition:background .3s,border-color .3s;white-space:nowrap}
.btn:hover{background:var(--copper);border-color:var(--copper)}
.btn .arr{transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translateX(5px)}
.btn-line{background:transparent;color:var(--ink)}
.btn-line:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-inv{background:#fff;color:var(--ink);border-color:#fff}
.btn-inv:hover{background:var(--copper-b);border-color:var(--copper-b);color:#fff}

/* text link w/ animated underline */
.tlink{position:relative;font:600 12.5px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink);display:inline-flex;align-items:center;gap:8px;padding-bottom:5px}
.tlink::after{content:'';position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--ink);transform-origin:right;transition:transform .4s var(--ease)}
.tlink:hover::after{transform:scaleX(.55)}
.tlink:hover{color:var(--copper)}

/* ── nav ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:72px;background:rgba(250,250,248,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.nav.scrolled{box-shadow:0 1px 24px rgba(16,21,31,.07)}
.nav-in{max-width:1280px;margin:0 auto;padding:0 40px;height:100%;display:flex;align-items:center;justify-content:space-between;gap:32px}
.nav-logo img{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{font:500 12px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--mut);position:relative;padding:6px 0;transition:color .25s}
.nav-links a:hover,.nav-links a.on{color:var(--ink)}
.nav-links a::after{content:'';position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--copper);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.nav-links a:hover::after,.nav-links a.on::after{transform:scaleX(1)}
.nav-cta{font:600 11.5px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:#fff;background:var(--ink);padding:13px 22px;border:1px solid var(--ink);transition:background .3s,border-color .3s;white-space:nowrap}
.nav-cta:hover{background:var(--copper);border-color:var(--copper)}
.nav-burger{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px;position:relative}
.nav-burger span{position:absolute;left:8px;right:8px;height:1.5px;background:var(--ink);transition:transform .3s var(--ease),opacity .2s}
.nav-burger span:nth-child(1){top:14px}
.nav-burger span:nth-child(2){top:20px}
.nav-burger span:nth-child(3){top:26px}
.nav.open .nav-burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav.open .nav-burger span:nth-child(2){opacity:0}
.nav.open .nav-burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-mobile{display:none;position:fixed;top:72px;left:0;right:0;z-index:99;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 40px 28px;flex-direction:column;gap:4px}
.nav.open + .nav-mobile{display:flex}
.nav-mobile a{font:500 14px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line)}

/* ── technical grid background ── */
.gridbg{background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;background-position:center top}

/* corner-tick frame */
.frame{position:relative;border:1px solid var(--line)}
.frame::before,.frame::after{content:'';position:absolute;width:9px;height:9px;pointer-events:none}
.frame::before{top:-1px;left:-1px;border-top:1.5px solid var(--ink);border-left:1.5px solid var(--ink)}
.frame::after{bottom:-1px;right:-1px;border-bottom:1.5px solid var(--ink);border-right:1.5px solid var(--ink)}

/* ── scroll reveal ── */
.rv{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .lr>span{transform:none;transition:none}
  .marquee-track{animation:none!important}
}

/* ── marquee ── */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper);padding:17px 0}
.marquee-track{display:flex;gap:64px;width:max-content;animation:mq 46s linear infinite}
.marquee-track span{font:500 12px var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--mut);white-space:nowrap;display:flex;align-items:center;gap:64px}
.marquee-track b{color:var(--copper);font-weight:500}
@keyframes mq{to{transform:translateX(-50%)}}

/* ── hero viz / DRO ── */
.hero-viz{position:relative;background:var(--paper);overflow:hidden;min-height:540px}
.hero-viz canvas{position:absolute;inset:0;width:100%;height:100%}
.dro{position:absolute;left:20px;bottom:20px;background:rgba(255,255,255,.94);border:1px solid var(--line);padding:16px 18px;min-width:190px;backdrop-filter:blur(4px)}
.dro-row{display:flex;justify-content:space-between;gap:24px;font:500 12.5px/2 var(--mono);color:var(--ink)}
.dro-row b{color:var(--mut);font-weight:500}
.dro-row.hot span{color:var(--copper)}
.dro-head{font:500 10px var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--mut);border-bottom:1px solid var(--line);padding-bottom:8px;margin-bottom:8px;display:flex;justify-content:space-between}
.dro-live{width:6px;height:6px;border-radius:50%;background:#2E9E5B;animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.25}}
.gcode{position:absolute;right:20px;top:20px;text-align:right;font:400 11px/1.9 var(--mono);color:var(--mut);pointer-events:none}
.gcode div{transition:opacity .4s}
.viz-tag{position:absolute;left:20px;top:20px;font:500 10px var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--mut);max-width:45%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media(max-width:1200px){.gcode{display:none}}

/* ── stats ── */
.stat-num{font:500 clamp(44px,4.6vw,72px)/1 var(--sans);letter-spacing:-.03em;color:var(--ink);display:flex;align-items:baseline;gap:2px}
.stat-num em{font-style:normal;color:var(--copper)}
.stat-cap{font:500 11px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--mut);margin-top:14px}

/* ── capability index rows ── */
.cap-row{display:grid;grid-template-columns:110px 1fr 340px 60px;gap:32px;align-items:center;padding:42px 0;border-top:1px solid var(--line);position:relative;transition:padding .35s var(--ease)}
.cap-row:last-of-type{border-bottom:1px solid var(--line)}
.cap-row::before{content:'';position:absolute;inset:0;background:var(--paper);transform:scaleY(0);transform-origin:bottom;transition:transform .4s var(--ease);z-index:0}
.cap-row:hover::before{transform:scaleY(1)}
.cap-row>*{position:relative;z-index:1}
.cap-no{font:400 13px var(--mono);letter-spacing:.1em;color:var(--mut)}
.cap-title{font:500 clamp(24px,2.6vw,36px)/1.1 var(--sans);letter-spacing:-.02em;transition:transform .35s var(--ease),color .3s}
.cap-row:hover .cap-title{transform:translateX(10px);color:var(--copper)}
.cap-desc{font:400 14px/1.6 var(--sans);color:var(--mut)}
.cap-arrow{justify-self:end;width:44px;height:44px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;transition:background .3s,border-color .3s;font-size:16px}
.cap-row:hover .cap-arrow{background:var(--ink);border-color:var(--ink);color:#fff}

/* ── part cards ── */
.part-card{background:var(--paper);border:1px solid var(--line);position:relative;transition:border-color .3s,transform .45s var(--ease),box-shadow .45s var(--ease)}
.part-card:hover{border-color:var(--ink);transform:translateY(-6px);box-shadow:0 24px 48px -24px rgba(16,21,31,.18)}
.part-img{aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;padding:36px;background:#fff;overflow:hidden;position:relative}
.part-img img{max-height:100%;object-fit:contain;transition:transform .6s var(--ease)}
.part-card:hover .part-img img{transform:scale(1.05)}
.part-img::before{content:'+';position:absolute;top:10px;left:14px;color:var(--line);font:300 18px var(--mono);transition:color .3s}
.part-img::after{content:'+';position:absolute;bottom:10px;right:14px;color:var(--line);font:300 18px var(--mono);transition:color .3s}
.part-card:hover .part-img::before,.part-card:hover .part-img::after{color:var(--copper)}
.part-meta{border-top:1px solid var(--line);padding:16px 20px;display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.part-name{font:500 14px var(--sans);letter-spacing:-.01em}
.part-ref{font:400 10.5px var(--mono);letter-spacing:.12em;color:var(--mut);text-transform:uppercase;white-space:nowrap}

/* ── process steps ── */
.proc{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.proc-step{padding:36px 32px 0 0;position:relative}
.proc-step::before{content:'';position:absolute;top:-1px;left:0;width:34px;height:2px;background:var(--copper);transform:scaleX(0);transform-origin:left;transition:transform .8s var(--ease) .2s}
.proc-step.in::before,.rv.in .proc-step::before{transform:scaleX(1)}
.proc-no{font:400 12px var(--mono);letter-spacing:.14em;color:var(--copper);margin-bottom:18px}
.proc-title{font:500 19px var(--sans);letter-spacing:-.01em;margin-bottom:10px}
.proc-copy{font:400 14px/1.7 var(--sans);color:var(--mut)}

/* ── dark band ── */
.band{background:var(--navy-deep);color:#fff}
.band .h2,.band .display{color:#fff}
.band .body-copy,.band .lede{color:rgba(255,255,255,.62)}
.band .mono-label{color:var(--copper-b)}
.doc-list{display:flex;flex-direction:column}
.doc-item{display:grid;grid-template-columns:52px 1fr auto;gap:20px;align-items:baseline;padding:20px 0;border-top:1px solid var(--line-dark);transition:padding-left .3s var(--ease)}
.doc-item:hover{padding-left:10px}
.doc-item:last-child{border-bottom:1px solid var(--line-dark)}
.doc-no{font:400 12px var(--mono);color:rgba(255,255,255,.4)}
.doc-name{font:500 17px var(--sans);color:#fff}
.doc-tag{font:400 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--copper-b)}

/* ── page hero (subpages) ── */
.page-hero{padding:96px 0 72px;border-bottom:1px solid var(--line);position:relative}
.crumb{display:flex;gap:12px;align-items:center;font:400 11.5px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mut);margin-bottom:28px}
.crumb a:hover{color:var(--copper)}
.crumb span{color:var(--line)}
.draw-line{height:1px;background:var(--line);position:relative;margin-top:56px;overflow:visible}
.draw-line::before{content:'';position:absolute;left:0;top:0;height:1px;width:0;background:var(--copper);transition:width 1.6s var(--ease) .3s}
.draw-line.in::before{width:38%}
.draw-line::after{content:'';position:absolute;top:-2.5px;width:6px;height:6px;background:var(--copper);left:0;opacity:0;transition:left 1.6s var(--ease) .3s,opacity .3s .3s}
.draw-line.in::after{left:38%;opacity:1}

/* ── spec chips ── */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{font:500 11.5px var(--mono);letter-spacing:.08em;color:var(--ink);border:1px solid var(--line);background:var(--paper);padding:9px 14px;transition:border-color .25s,color .25s}
.chip:hover{border-color:var(--copper);color:var(--copper)}

/* spec table */
.spec-table{width:100%;border-collapse:collapse}
.spec-table td{padding:15px 0;border-top:1px solid var(--line);font:400 14px/1.5 var(--sans);color:var(--mut);vertical-align:top}
.spec-table td:first-child{font:500 11px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink);width:220px;padding-right:24px}
.spec-table tr:last-child td{border-bottom:1px solid var(--line)}

/* ── FAQ ── */
details.faq{border-top:1px solid var(--line);background:transparent}
details.faq:last-child{border-bottom:1px solid var(--line)}
details.faq summary{list-style:none;cursor:pointer;padding:24px 0;display:flex;justify-content:space-between;align-items:center;gap:24px;font:500 16.5px var(--sans);letter-spacing:-.01em;transition:color .25s}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:hover{color:var(--copper)}
details.faq .faq-plus{font:300 22px/1 var(--mono);color:var(--copper);transition:transform .3s var(--ease);flex-shrink:0}
details.faq[open] .faq-plus{transform:rotate(45deg)}
details.faq .faq-body{padding:0 48px 26px 0;font:400 15px/1.75 var(--sans);color:var(--mut);max-width:760px}

/* ── forms ── */
.field{display:flex;flex-direction:column;gap:8px}
.field label{font:500 11px var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ink)}
.field input,.field select,.field textarea{font:400 15px var(--sans);color:var(--ink);background:var(--paper);border:1px solid var(--line);padding:14px 16px;border-radius:0;transition:border-color .25s;width:100%;-webkit-appearance:none;appearance:none}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink)}
.field textarea{resize:vertical;min-height:120px}
.field ::placeholder{color:#A8ADB8}
.file-drop{border:1px dashed #C9C6BE;background:var(--paper);padding:26px;text-align:center;cursor:pointer;transition:border-color .25s,background .25s;position:relative}
.file-drop:hover{border-color:var(--copper);background:#FFFDFA}
.file-drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}

/* ── footer ── */
footer{background:var(--navy-deep);color:#fff;overflow:hidden}
.foot-cta{border-bottom:1px solid var(--line-dark);padding:96px 0}
.foot-main{padding:72px 0 40px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px}
.foot-h{font:500 10.5px var(--mono);letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.42);margin-bottom:20px}
.foot-main a,.foot-main p{font:400 13.5px/2.1 var(--sans);color:rgba(255,255,255,.68);display:block}
.foot-main a:hover{color:var(--copper-b)}
.foot-word{font:500 clamp(56px,10vw,150px)/1 var(--sans);letter-spacing:-.04em;color:rgba(255,255,255,.05);white-space:nowrap;text-align:center;padding:24px 0 0;user-select:none}
.foot-bar{border-top:1px solid var(--line-dark);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font:400 11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.38)}

/* striped photo placeholder */
.ph{background:repeating-linear-gradient(-45deg,#F2F1EC 0 10px,#FAFAF8 10px 20px);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;text-align:center;padding:24px}
.ph span{font:400 11px/1.8 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mut);max-width:240px}

/* anchor sub-nav */
.subnav{position:sticky;top:72px;z-index:50;background:rgba(250,250,248,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.subnav-in{display:flex;gap:36px;overflow-x:auto;padding:0 40px;max-width:1280px;margin:0 auto}
.subnav a{font:500 11.5px var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mut);padding:17px 0;white-space:nowrap;border-bottom:2px solid transparent;transition:color .25s,border-color .25s}
.subnav a:hover,.subnav a.on{color:var(--ink);border-color:var(--copper)}

/* ── responsive ── */
@media(max-width:1080px){
  .cap-row{grid-template-columns:70px 1fr 60px}
  .cap-desc{display:none}
  .foot-main{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .wrap{padding:0 24px}
  .sec{padding:72px 0}
  .nav-in{padding:0 24px}
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:block}
  .proc{grid-template-columns:1fr 1fr}
  .proc-step{padding:28px 20px 28px 0}
  .g2,.g3,.g4{grid-template-columns:1fr!important}
  .hero-viz{min-height:420px}
  .subnav-in{padding:0 24px}
}
@media(max-width:600px){
  .proc{grid-template-columns:1fr}
  .foot-main{grid-template-columns:1fr}
  .cap-row{grid-template-columns:50px 1fr 44px;gap:16px;padding:30px 0}
  .cap-arrow{width:36px;height:36px}
  .dro{left:12px;bottom:12px;padding:12px 14px;min-width:160px}
  .gcode{display:none}
}