/* AHSTECH — shared styles
   Palette derived from the logo: deep maroon, copper, ink, paper. */

:root{
  --ink:#1B1E23;
  --ink-soft:#2A2E35;
  --maroon:#781824;
  --maroon-deep:#5A101A;
  --copper:#A7642D;
  --copper-bright:#C4813C;
  --paper:#F7F7F7;
  --paper-warm:#EFEDEA;
  --muted:#6C7079;
  --line:rgba(27,30,35,.14);
  --line-dark:rgba(247,247,247,.16);

  --display:'Archivo',system-ui,sans-serif;
  --body:'Instrument Sans',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;

  --wrap:1180px;
  --pad:clamp(20px,5vw,64px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}

/* ---------- type ---------- */
h1,h2,h3,h4{font-family:var(--display);margin:0;line-height:1.02;letter-spacing:-.02em}
h1{font-size:clamp(2.6rem,7vw,5.1rem);font-variation-settings:'wdth' 112,'wght' 700;text-transform:uppercase}
h2{font-size:clamp(1.9rem,4.2vw,3.1rem);font-variation-settings:'wdth' 108,'wght' 700;text-transform:uppercase}
h3{font-size:1.28rem;font-variation-settings:'wdth' 104,'wght' 650;letter-spacing:-.01em}
p{margin:0 0 1.1em}
.lede{font-size:clamp(1.06rem,2vw,1.3rem);color:var(--muted);max-width:56ch}

.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--copper);margin:0 0 18px;display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--copper);flex:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:2px;
  font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  text-decoration:none;border:1px solid transparent;transition:background .2s,color .2s,border-color .2s;
}
.btn--solid{background:var(--maroon);color:var(--paper)}
.btn--solid:hover{background:var(--maroon-deep)}
.btn--ghost{border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--copper);color:var(--copper)}
.btn--onDark{border:1px solid var(--line-dark);color:var(--paper)}
.btn--onDark:hover{border-color:var(--copper-bright);color:var(--copper-bright)}
.btn span{transition:transform .2s}
.btn:hover span{transform:translateX(3px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(247,247,247,.9);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.site-header .bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{height:44px;width:auto}
.nav{display:flex;align-items:center;gap:30px}
.nav a{
  text-decoration:none;font-size:.88rem;color:var(--ink);padding:6px 0;position:relative;
}
.nav a::after{
  content:'';position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--copper);transition:width .22s;
}
.nav a:hover::after,.nav a[aria-current="page"]::after{width:100%}
.nav a[aria-current="page"]{color:var(--maroon)}
.nav .btn{margin-left:6px}
.nav a.btn--solid{color:var(--paper)}
.nav a.btn--solid:hover{color:#fff}
.nav .btn::after{display:none}
.burger{display:none;background:none;border:1px solid var(--line);width:44px;height:40px;border-radius:2px;cursor:pointer}
.burger i{display:block;width:18px;height:1.5px;background:var(--ink);margin:4px auto;transition:transform .25s,opacity .2s}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

@media (max-width:900px){
  .burger{display:block}
  .nav{
    position:fixed;inset:76px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:8px var(--pad) 26px;
    transform:translateY(-140%);transition:transform .3s ease;
  }
  .nav.open{transform:translateY(0)}
  .nav a{width:100%;padding:15px 0;border-bottom:1px solid var(--line);font-size:1rem}
  .nav .btn{margin:18px 0 0;border-bottom:none;width:100%;justify-content:center}
}

/* ---------- signature: circuit trace ---------- */
.trace{width:100%;height:auto;overflow:visible}
.trace path{fill:none;stroke:var(--copper);stroke-width:1.4}
.trace circle{fill:var(--paper);stroke:var(--copper);stroke-width:1.4}
.trace .node-fill{fill:var(--copper);stroke:none}
.trace--dark path{stroke:var(--copper-bright)}
.trace--dark circle{fill:var(--ink);stroke:var(--copper-bright)}

.draw path{stroke-dasharray:var(--len,1200);stroke-dashoffset:var(--len,1200);animation:draw 1.6s .15s ease forwards}
.draw circle{opacity:0;animation:pop .5s ease forwards}
.draw circle:nth-of-type(1){animation-delay:.9s}
.draw circle:nth-of-type(2){animation-delay:1.1s}
.draw circle:nth-of-type(3){animation-delay:1.3s}
.draw circle:nth-of-type(4){animation-delay:1.5s}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{to{opacity:1}}

/* ---------- hero ---------- */
.hero{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.hero .wrap{padding-block:clamp(64px,11vw,124px)}
.hero h1{max-width:15ch}
.hero h1 em{font-style:normal;color:var(--copper-bright)}
.hero .lede{color:rgba(247,247,247,.68);margin-top:26px}
.hero .actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero .actions .btn--solid{background:var(--maroon);color:#fff}
.hero .actions .btn--solid:hover{background:var(--copper)}
.hero-trace{position:absolute;right:-40px;top:0;height:100%;width:min(46%,540px);opacity:.55;pointer-events:none}
@media (max-width:820px){.hero-trace{display:none}}

.hero--page{background:var(--ink)}
.hero--page .wrap{padding-block:clamp(52px,8vw,88px)}
.hero--page h1{font-size:clamp(2.2rem,5.6vw,3.9rem);max-width:18ch}

/* ---------- sections ---------- */
.section{padding-block:clamp(56px,8vw,104px)}
.section--warm{background:var(--paper-warm)}
.section--dark{background:var(--ink);color:var(--paper)}
.section--dark .lede{color:rgba(247,247,247,.66)}
.section--dark h2 em{font-style:normal;color:var(--copper-bright)}
.section-head{max-width:62ch;margin-bottom:clamp(32px,5vw,52px)}
.section-head h2 em{font-style:normal;color:var(--maroon)}

.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.grid--3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid--3,.grid--2{grid-template-columns:1fr}}

.cell{background:var(--paper);padding:clamp(24px,3.2vw,38px)}
.section--warm .cell{background:var(--paper-warm)}
.cell .tag{font-family:var(--mono);font-size:.7rem;letter-spacing:.18em;color:var(--copper);text-transform:uppercase}
.cell h3{margin:16px 0 10px}
.cell p{color:var(--muted);font-size:.97rem;margin:0}
.cell--link{text-decoration:none;display:block;transition:background .2s}
.cell--link:hover{background:#fff}
.section--warm .cell--link:hover{background:var(--paper)}

/* ---------- process ---------- */
.steps{display:grid;gap:0;margin-top:12px}
.step{
  display:grid;grid-template-columns:88px 1fr;gap:clamp(16px,3vw,40px);
  padding:clamp(26px,3.6vw,40px) 0;border-top:1px solid var(--line);
}
.section--dark .step{border-top-color:var(--line-dark)}
.step:last-child{border-bottom:1px solid var(--line)}
.section--dark .step:last-child{border-bottom-color:var(--line-dark)}
.step .num{
  font-family:var(--mono);font-size:.82rem;letter-spacing:.16em;color:var(--copper);
  padding-top:6px;position:relative;
}
.step .num::after{content:'';position:absolute;left:0;top:34px;width:1px;height:calc(100% - 24px);background:var(--line)}
.section--dark .step .num::after{background:var(--line-dark)}
.step h3{margin-bottom:10px}
.step p{color:var(--muted);max-width:62ch;margin:0}
.section--dark .step p{color:rgba(247,247,247,.62)}
@media (max-width:640px){.step{grid-template-columns:1fr}.step .num::after{display:none}}

/* ---------- facts / list ---------- */
.checks{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:14px}
.checks li{display:flex;gap:14px;align-items:flex-start;font-size:.98rem}
.checks li::before{
  content:'';flex:none;width:9px;height:9px;margin-top:9px;border-radius:50%;
  border:1.5px solid var(--copper);
}

.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
@media (max-width:820px){.split{grid-template-columns:1fr}}

/* ---------- cta ---------- */
.cta{background:var(--maroon);color:#fff}
.cta .wrap{padding-block:clamp(52px,7vw,84px);display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta h2{max-width:16ch}
.cta .btn{background:#fff;color:var(--maroon)}
.cta .btn:hover{background:var(--ink);color:#fff}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(30px,5vw,68px);align-items:start}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.field{display:grid;gap:8px;margin-bottom:20px}
.field label{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.field input,.field select,.field textarea{
  font-family:var(--body);font-size:1rem;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:2px;padding:13px 14px;width:100%;
}
.field textarea{min-height:150px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--copper);outline-offset:1px;border-color:transparent}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.form-note{font-size:.86rem;color:var(--muted)}
.form-msg{display:none;padding:14px 16px;border-radius:2px;margin-bottom:20px;font-size:.94rem}
.form-msg.ok{display:block;background:rgba(29,122,72,.10);border-left:3px solid #1D7A48;color:#14572F}
.form-msg.err{display:block;background:rgba(120,24,36,.1);border-left:3px solid var(--maroon)}

.info-card{border:1px solid var(--line);padding:clamp(24px,3vw,34px);background:#fff}
.info-row{padding:18px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:none;padding-bottom:0}
.info-row .k{font-family:var(--mono);font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--copper);display:block;margin-bottom:7px}
.info-row a{text-decoration:none;border-bottom:1px solid var(--line)}
.info-row a:hover{border-color:var(--copper);color:var(--copper)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,247,247,.66);font-size:.92rem}
.site-footer .wrap{padding-block:clamp(44px,6vw,68px)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
@media (max-width:820px){.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media (max-width:520px){.footer-top{grid-template-columns:1fr}}
.footer-brand img{height:56px;width:auto;margin-bottom:18px}
.site-footer h4{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--copper-bright);margin:0 0 16px;font-weight:500;
}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:var(--copper-bright)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:.82rem;
  font-family:var(--mono);letter-spacing:.06em;color:rgba(247,247,247,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px)}
.reveal.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .draw path{stroke-dashoffset:0}
  .draw circle{opacity:1}
}