/* ═══════════════════════════════════════════════════════════════════
   A PROJECT · V3 INTERACTIVE
   Cooler near-black, instrument gold, a drawing-office grid.
   Motion personality: short, precise, mechanical. 220–420ms, no drift.
   ═══════════════════════════════════════════════════════════════════ */

@font-face{font-family:Jura;src:url(assets/fonts/jura.woff2) format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:Jura;src:url(assets/fonts/jura-light.woff2) format('woff2');font-weight:300;font-display:swap}
@font-face{font-family:Outfit;src:url(assets/fonts/outfit.woff2) format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Outfit;src:url(assets/fonts/outfit-bold.woff2) format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:Plex;src:url(assets/fonts/plexmono.woff2) format('woff2');font-weight:400;font-display:swap}

:root{
  --bg:#0A0A0B;
  --bg-2:#101012;
  --bg-3:#161619;
  --fg:#ECE9E2;
  --fg-2:#A8A49C;
  --fg-3:#7C7871;
  --gold:#D0AB6E;
  --gold-2:#A8823F;
  --line:rgba(236,233,226,.12);
  --line-gold:rgba(208,171,110,.28);

  --ease:cubic-bezier(.2,.7,.2,1);
  --gut:20px;
  --bay:clamp(72px,10vh,124px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:Outfit,system-ui,sans-serif;font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
h1,h2,h3{margin:0;font-weight:400;text-wrap:balance}
p{margin:0}
p,li,dd{text-wrap:pretty}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;
  clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px;top:0;z-index:99;background:var(--gold);color:#0A0A0B;
  padding:12px 18px;font-family:Plex,monospace;font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.skip:focus{left:10px;top:10px}

.mono{font-family:Plex,ui-monospace,monospace;font-size:11px;line-height:1.5;
  letter-spacing:.16em;text-transform:uppercase;color:var(--fg-3)}
.mono--gold{color:var(--gold-2)}
.mono span{color:var(--gold-2);padding:0 4px}
.sec-title{font-family:Jura,sans-serif;font-weight:500;
  font-size:clamp(32px,8.6vw,58px);line-height:1.06;letter-spacing:.02em;margin-top:8px}
section[id]{scroll-margin-top:78px}

/* reveal: short, precise */
.rv{opacity:0;transform:translate3d(0,14px,0);
  transition:opacity .34s var(--ease),transform .42s var(--ease)}
.rv.in{opacity:1;transform:none}

/* ── bar ───────────────────────────────────────────────────────── */
.bar{position:sticky;top:0;z-index:40;display:flex;align-items:center;
  justify-content:space-between;gap:12px;padding:9px var(--gut);
  background:rgba(10,10,11,.86);border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(6px)){.bar{backdrop-filter:blur(8px)}}
.bar__id img{width:60px;height:auto}
.bar__ref{display:none}
.bar__cta{font-family:Plex,monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--line-gold);padding:0 14px;min-height:40px;
  display:inline-flex;align-items:center;
  transition:background-color .24s var(--ease),border-color .24s var(--ease)}
.bar__cta:hover{background:rgba(208,171,110,.1);border-color:var(--gold)}

/* ── hero ──────────────────────────────────────────────────────── */
.hero{position:relative;overflow:hidden;padding:clamp(40px,7vh,76px) var(--gut) var(--bay)}
.hero__grid{position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(rgba(208,171,110,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(208,171,110,.055) 1px,transparent 1px);
  background-size:38px 38px;
  -webkit-mask-image:radial-gradient(120% 78% at 24% 22%,#000 0%,transparent 76%);
  mask-image:radial-gradient(120% 78% at 24% 22%,#000 0%,transparent 76%)}
.hero__text,.hero__plan{position:relative;z-index:1}
.hero__title{font-family:Jura,sans-serif;font-weight:500;
  font-size:clamp(46px,15vw,104px);line-height:1;letter-spacing:.06em;margin:14px 0 0}
.hero__lead{margin-top:18px;max-width:36ch;color:var(--fg-2);font-size:clamp(16px,4.2vw,19px)}
.hero__acts{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.hero__plan{margin:clamp(36px,6vh,60px) 0 0}
.hero__plan img{width:100%;height:auto;opacity:.9}
.hero__plan figcaption{margin-top:10px;font-family:Plex,monospace;font-size:10px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--fg-3)}
.hero__plan figcaption span{color:var(--gold-2);padding:0 4px}

/* ── buttons ───────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 22px;border:1px solid var(--line-gold);color:var(--gold);
  font-family:Plex,monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  cursor:pointer;background:none;
  transition:background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease)}
.btn:hover{border-color:var(--gold);background:rgba(208,171,110,.09)}
.btn--solid{background:var(--gold);border-color:var(--gold);color:#0A0A0B}
.btn--solid:hover{background:#E0BC80;border-color:#E0BC80;color:#0A0A0B}
.btn--wide{width:100%}

/* ── scoping tool ──────────────────────────────────────────────── */
.scope{padding:var(--bay) var(--gut);background:var(--bg-2);border-block:1px solid var(--line)}
.scope__head{max-width:56ch}
.scope__sub{margin-top:14px;color:var(--fg-2);font-size:16px}
.scope__panel{margin-top:clamp(28px,4vh,46px);border:1px solid var(--line);background:var(--bg)}

.rail{display:flex;border-bottom:1px solid var(--line);overflow:hidden}
.rail__i{flex:1 1 0;min-width:0;padding:11px 8px;font-family:Plex,monospace;font-size:10px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3);
  border-right:1px solid var(--line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:color .24s var(--ease),background-color .24s var(--ease)}
.rail__i:last-child{border-right:0}
.rail__i b{display:block;font-weight:400;color:var(--gold-2);letter-spacing:.06em}
.rail__i.is-on{color:var(--fg);background:var(--bg-3)}
.rail__i.is-done{color:var(--fg-2)}
.rail__i.is-done b,.rail__i.is-on b{color:var(--gold)}

.stage{padding:clamp(20px,3.4vw,34px)}
.step{opacity:0;transform:translate3d(0,10px,0);
  transition:opacity .28s var(--ease),transform .32s var(--ease)}
.step.is-on{opacity:1;transform:none}
.step[hidden]{display:none}
.step__q{font-family:Jura,sans-serif;font-weight:500;
  font-size:clamp(22px,5.6vw,32px);line-height:1.16;letter-spacing:.02em}

.opts{margin-top:20px;display:grid;gap:10px}
.opt{
  appearance:none;text-align:left;cursor:pointer;
  background:var(--bg-3);border:1px solid var(--line);color:var(--fg);
  padding:15px 16px;font-family:inherit;min-height:64px;
  display:flex;flex-direction:column;gap:5px;
  transition:border-color .22s var(--ease),background-color .22s var(--ease),
             transform .22s var(--ease);
}
.opt:hover{border-color:var(--line-gold);background:#1B1B1F}
.opt:active{transform:translate3d(0,1px,0)}
.opt.is-on{border-color:var(--gold);background:#1B1B1F}
.opt__k{font-family:Jura,sans-serif;font-weight:500;font-size:17px;letter-spacing:.03em}
.opt__d{font-size:13.5px;line-height:1.45;color:var(--fg-3)}
.opt.is-on .opt__k{color:var(--gold)}

.back{appearance:none;background:none;border:0;cursor:pointer;padding:12px 0 0;
  min-height:44px;font-family:Plex,monospace;font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--fg-3);
  transition:color .22s var(--ease)}
.back:hover{color:var(--gold)}
.back::before{content:"\2190";padding-right:8px;color:var(--gold-2)}

/* ── the reply ─────────────────────────────────────────────────── */
.reply__lede{font-family:Jura,sans-serif;font-weight:500;margin-top:10px;
  font-size:clamp(21px,5.2vw,30px);line-height:1.2;letter-spacing:.02em;max-width:26ch}
.reply__body{margin-top:14px;color:var(--fg-2);font-size:16px;max-width:56ch}

.prog{margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}
.prog__list{margin-top:14px;display:grid;gap:9px}
.prog__row{display:grid;grid-template-columns:1fr auto;gap:6px 12px;align-items:center}
.prog__nm{font-size:14px;color:var(--fg)}
.prog__wk{font-family:Plex,monospace;font-size:11px;letter-spacing:.08em;color:var(--fg-3);
  text-align:right;font-variant-numeric:tabular-nums}
.prog__bar{grid-column:1 / -1;height:5px;background:var(--bg-3);overflow:hidden}
.prog__fill{display:block;height:100%;background:var(--gold-2);
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease)}
.prog__row.is-site .prog__fill{background:var(--gold)}
.prog__total{margin-top:16px;color:var(--fg)}
.prog__total b{color:var(--gold);font-weight:400}
.prog__note{margin-top:8px;font-size:13px;line-height:1.5;color:var(--fg-3);max-width:52ch}

.next{margin-top:26px;padding:16px;border:1px solid var(--line-gold);background:rgba(208,171,110,.05)}
.next p:last-child{margin-top:8px;font-size:15.5px;color:var(--fg-2)}

/* ── enquiry ───────────────────────────────────────────────────── */
.enq{margin-top:26px;padding-top:22px;border-top:1px solid var(--line);display:grid;gap:14px}
.enq__row{display:grid;gap:6px}
.enq label{font-family:Plex,monospace;font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--fg-3)}
.enq label i{font-style:normal;color:var(--gold-2);padding-left:6px}
.enq input,.enq textarea{
  width:100%;background:var(--bg-3);border:1px solid var(--line);color:var(--fg);
  font-family:inherit;font-size:16px;padding:12px;min-height:48px;border-radius:0;
  transition:border-color .22s var(--ease)}
.enq textarea{min-height:84px;resize:vertical;line-height:1.5}
.enq input:focus,.enq textarea:focus{border-color:var(--gold);outline:none}
.enq input[aria-invalid="true"]{border-color:#D97A6C}
.err{font-family:Plex,monospace;font-size:11px;letter-spacing:.06em;color:#E08D80;min-height:0}
.err:empty{display:none}
.enq__foot{font-size:13px;color:var(--fg-3)}
.enq.sent{opacity:.55;pointer-events:none}

/* ── comparison ────────────────────────────────────────────────── */
.nuded{padding:var(--bay) var(--gut)}
.nuded__sub{margin-top:12px;color:var(--fg-2);max-width:40ch}
.cmp{margin:clamp(28px,4vh,44px) 0 0}
.cmp__frame{--p:1;position:relative;overflow:hidden;margin-inline:auto;
  width:min(78vw,330px);aspect-ratio:410/815;background:var(--bg-3);
  border:1px solid var(--line)}
.cmp__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  -webkit-user-drag:none;user-select:none}
.cmp__clip{position:absolute;inset:0;overflow:hidden;
  transform:translate3d(calc((var(--p) - 1) * 100%),0,0)}
.cmp__counter{position:absolute;inset:0;
  transform:translate3d(calc((1 - var(--p)) * 100%),0,0)}
.cmp__rule{position:absolute;inset:0;width:100%;pointer-events:none;
  transform:translate3d(calc(var(--p) * 100%),0,0)}
.cmp__rule::before{content:"";position:absolute;left:-1px;top:0;bottom:0;width:1px;
  background:var(--gold)}

.cmp__ctrl{margin:18px auto 0;width:min(78vw,330px)}
.cmp__ticks{display:flex;justify-content:space-between;margin-bottom:6px}
.cmp__ticks i{width:1px;height:7px;background:var(--line)}
.cmp__range{
  -webkit-appearance:none;appearance:none;width:100%;height:32px;
  background:transparent;cursor:ew-resize;display:block;margin:0}
.cmp__range::-webkit-slider-runnable-track{height:1px;background:var(--line)}
.cmp__range::-moz-range-track{height:1px;background:var(--line)}
.cmp__range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;
  width:20px;height:32px;background:var(--gold);border:0;margin-top:-15.5px;cursor:ew-resize}
.cmp__range::-moz-range-thumb{width:20px;height:32px;background:var(--gold);border:0;
  border-radius:0;cursor:ew-resize}
.cmp__read{display:flex;justify-content:space-between;align-items:baseline;margin-top:2px}
.cmp__read b{color:var(--gold);font-weight:400;font-variant-numeric:tabular-nums}

/* ── capability spec sheet ─────────────────────────────────────── */
.cap{padding:var(--bay) var(--gut);background:var(--bg-2);border-block:1px solid var(--line)}
.spec{margin-top:clamp(26px,4vh,44px);border-top:1px solid var(--line)}
.spec__row{display:grid;gap:4px;padding:16px 0;border-bottom:1px solid var(--line)}
.spec dt{font-family:Jura,sans-serif;font-weight:500;font-size:19px;letter-spacing:.03em}
.spec dd{margin:0;color:var(--fg-3);font-size:15px}

/* ── drawing sheets ────────────────────────────────────────────── */
.sheets{padding:var(--bay) var(--gut)}
.sheets__grid{margin-top:clamp(26px,4vh,44px);display:grid;gap:16px}
.sheet{border:1px solid var(--line);background:var(--bg-2)}
.sheet__draw{padding:8px;background:
  linear-gradient(rgba(236,233,226,.02),rgba(236,233,226,0))}
.sheet__draw img{width:100%;height:auto}
.sheet__block{border-top:1px solid var(--line);padding:12px 14px;
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:baseline;justify-content:space-between}
.sheet__block h3{font-family:Jura,sans-serif;font-weight:500;font-size:17px;letter-spacing:.03em}
.sheet__block dl{display:flex;gap:16px;margin:0}
.sheet__block dl div{display:flex;gap:6px;align-items:baseline}
.sheet__block dt{font-family:Plex,monospace;font-size:9px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--fg-3)}
.sheet__block dd{margin:0;font-family:Plex,monospace;font-size:11px;color:var(--gold-2)}

/* ── firm ──────────────────────────────────────────────────────── */
.firm{padding:var(--bay) var(--gut);background:var(--bg-2);border-block:1px solid var(--line)}
.firm__body{margin-top:16px;display:grid;gap:16px;color:var(--fg-2);max-width:60ch}
.firm__lead{color:var(--fg);font-family:Jura,sans-serif;font-weight:500;
  font-size:clamp(22px,5.6vw,34px);line-height:1.2;letter-spacing:.02em;max-width:22ch}

/* ── contact ───────────────────────────────────────────────────── */
.contact{padding:var(--bay) var(--gut);text-align:center}
.contact__t{font-family:Jura,sans-serif;font-weight:500;
  font-size:clamp(34px,10vw,68px);line-height:1.04;letter-spacing:.03em}
.contact__b{margin:14px auto 0;max-width:34ch;color:var(--fg-2)}
.contact__acts{margin-top:28px;display:flex;flex-direction:column;align-items:center;gap:12px}

/* ── footer ────────────────────────────────────────────────────── */
.foot{padding:26px var(--gut) 30px;border-top:1px solid var(--line);
  display:grid;gap:12px;justify-items:start}
.foot img{width:54px;height:auto;opacity:.6}

/* ═══ 620px ═══════════════════════════════════════════════════════ */
@media (min-width:620px){
  :root{--gut:34px}
  .opts{grid-template-columns:1fr 1fr}
  .opts--3{grid-template-columns:repeat(3,1fr)}
  .sheets__grid{grid-template-columns:1fr 1fr}
  .spec__row{grid-template-columns:220px 1fr;gap:20px;align-items:baseline}
  .contact__acts{flex-direction:row;justify-content:center}
  .foot{grid-template-columns:auto 1fr auto;align-items:center;justify-items:end}
  .foot img{justify-self:start}
  .foot p:nth-of-type(1){justify-self:start}
}

/* ═══ 900px ═══════════════════════════════════════════════════════ */
@media (min-width:900px){
  :root{--gut:52px}
  body{font-size:17px}
  .bar__ref{display:block;font-family:Plex,monospace;font-size:11px;letter-spacing:.14em;
    text-transform:uppercase;color:var(--fg-3)}
  .bar__ref span{color:var(--gold-2);padding:0 5px}
  .hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
    gap:clamp(30px,4vw,64px);align-items:center;
    padding-block:clamp(56px,9vh,110px) var(--bay)}
  .hero__plan{margin-top:0}
  .scope__panel{display:grid;grid-template-columns:200px 1fr}
  .rail{flex-direction:column;border-bottom:0;border-right:1px solid var(--line)}
  .rail__i{flex:0 0 auto;border-right:0;border-bottom:1px solid var(--line);padding:16px 18px}
  .nuded{display:grid;grid-template-columns:minmax(0,1fr) auto;
    gap:clamp(34px,5vw,80px);align-items:center}
  .cmp__frame{width:auto;height:min(64vh,560px);margin-inline:0}
  .cmp__ctrl{margin-inline:0;width:300px}
  .sheets__grid{gap:22px}
}

/* ═══ 1180px ══════════════════════════════════════════════════════ */
@media (min-width:1180px){
  :root{--gut:72px}
  .sheets__grid{grid-template-columns:repeat(4,1fr)}
  .scope__panel{grid-template-columns:230px 1fr}
  .stage{padding:40px}
}

/* ── reduced motion ────────────────────────────────────────────── */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important;
  }
  .rv{opacity:1;transform:none}
  .step{opacity:1;transform:none}
  .prog__fill{transform:scaleX(1)}
}