/* ==========================================================
   MASTECH — shared stylesheet
   ========================================================== */

:root{
  --ink:#060B1A;
  --navy:#0B1F4D;
  --blue:#003CF0;
  --blue-deep:#0030B4;
  --paper:#F7F7F7;
  --white:#FFFFFF;
  --line:#D8D8E4;
  --muted:#5A6076;
  --muted-dark:#9AA3BF;
  --ok:#0A7A46;
  --err:#B4232A;
  --wrap:1180px;
  --pad:clamp(20px,5vw,56px);
  --header-h:72px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,sans-serif;
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
a{color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}

/* ---------- type ---------- */
h1,h2,h3{font-family:"Archivo",system-ui,sans-serif;line-height:1.04;letter-spacing:-.03em;font-weight:700}
h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
h3{font-size:1.05rem;letter-spacing:-.01em;line-height:1.3;font-weight:600}
p{max-width:62ch}

.eyebrow{
  font-family:"IBM Plex Mono",monospace;
  font-size:.72rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--blue-deep);
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue);flex:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:"IBM Plex Sans",sans-serif;font-size:.92rem;font-weight:500;
  padding:13px 24px;border-radius:2px;text-decoration:none;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .18s,color .18s,border-color .18s;
}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--ink)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn .arw{transition:transform .18s}
.btn:hover .arw{transform:translateX(3px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,247,247,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--header-h)}
.brand{display:flex;align-items:center;flex:none;line-height:0}
.brand img{height:34px;width:auto;display:block}
.header-right{display:flex;align-items:center;gap:14px}
.nav{display:flex;align-items:center;gap:30px}
.nav a{text-decoration:none;font-size:.92rem;color:var(--muted);padding:6px 0;position:relative;transition:color .18s}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink)}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--blue);transition:width .22s ease}
.nav a:hover::after,.nav a[aria-current="page"]::after{width:100%}

/* hamburger */
.nav-toggle{
  display:none;width:42px;height:42px;
  background:transparent;border:1px solid var(--line);border-radius:2px;
  cursor:pointer;position:relative;flex:none;
}
.nav-toggle span{
  position:absolute;left:11px;width:18px;height:1.5px;background:var(--ink);
  transition:transform .22s ease,opacity .18s ease;
}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:24px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

/* ---------- hero (home) ---------- */
.hero{padding:clamp(64px,9vw,120px) 0 clamp(56px,7vw,96px);position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(32px,5vw,72px);align-items:center}
.hero h1{font-size:clamp(2.5rem,6.2vw,4.4rem);margin:22px 0 0}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero .lede{margin-top:26px;font-size:1.08rem;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}

.circuit{width:100%;height:auto;display:block}
.trace{fill:none;stroke:var(--blue);stroke-width:1.4;stroke-linecap:square}
.trace-faint{stroke:var(--navy);opacity:.22}
.node{fill:var(--paper);stroke:var(--blue);stroke-width:1.6}
.node-solid{fill:var(--blue);stroke:none}
.trace-label{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;fill:var(--navy)}

@media (prefers-reduced-motion:no-preference){
  .draw{stroke-dasharray:var(--len);stroke-dashoffset:var(--len);animation:draw 1.1s cubic-bezier(.7,0,.3,1) forwards}
  .draw-2{animation-delay:.16s}
  .draw-3{animation-delay:.32s}
  .draw-4{animation-delay:.48s}
  .pop{opacity:0;animation:pop .3s ease forwards}
  .pop-1{animation-delay:.95s}.pop-2{animation-delay:1.1s}.pop-3{animation-delay:1.25s}.pop-4{animation-delay:1.4s}
}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{to{opacity:1}}

/* ---------- generic sections ---------- */
.section{padding:clamp(56px,7.5vw,104px) 0}
.section-dark{background:var(--ink);color:#fff}
.section-head{max-width:720px;margin-bottom:clamp(36px,4.5vw,58px)}
.section-head h2{margin-top:18px}
.section-head p{margin-top:18px;color:var(--muted)}
.section-dark .section-head p{color:var(--muted-dark)}
.section-dark .eyebrow{color:#7FA0FF}

/* ---------- service cards (home) ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.card{background:var(--paper);padding:32px 26px 36px;position:relative;transition:background .2s}
.card:hover{background:var(--white)}
.card .dot{width:7px;height:7px;border-radius:50%;background:var(--blue);margin-bottom:22px}
.card h3{font-size:1.12rem;margin-bottom:12px}
.card p{font-size:.95rem;color:var(--muted);margin:0}
.cards-note{margin-top:26px;font-size:.95rem;color:var(--muted)}
.cards-note a{color:var(--blue-deep);text-underline-offset:3px}

/* ---------- why grid (home) ---------- */
.why-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.13)}
.why{background:var(--ink);padding:36px 32px}
.why h3{color:#fff;margin-bottom:12px}
.why p{color:var(--muted-dark);font-size:.96rem;margin:0}
.why .rule{width:26px;height:2px;background:var(--blue);margin-bottom:20px}

/* ---------- interior page head ---------- */
.page-head{padding:clamp(56px,7vw,96px) 0 clamp(40px,5vw,64px);border-bottom:1px solid var(--line)}
.page-head--plain{border-bottom:0;padding-bottom:clamp(32px,4vw,48px)}
.page-head h1{font-size:clamp(2.3rem,5.2vw,3.6rem);margin:22px 0 0;letter-spacing:-.035em;line-height:1.02}
.page-head p,.page-head .sub{margin-top:24px;font-size:1.06rem;color:var(--muted)}

/* ---------- services bus ---------- */
.bus{position:relative;padding:clamp(48px,6vw,80px) 0 clamp(40px,5vw,72px)}
.bus::before{content:"";position:absolute;top:0;bottom:0;left:calc(var(--pad) + 5px);width:1px;background:var(--line)}
.svc{position:relative;padding:0 0 clamp(40px,5vw,60px) clamp(38px,4.5vw,72px)}
.svc:last-child{padding-bottom:0}
.svc::before{content:"";position:absolute;left:1px;top:9px;width:9px;height:9px;border-radius:50%;background:var(--paper);border:1.6px solid var(--blue)}
.svc::after{content:"";position:absolute;left:11px;top:13px;height:1px;width:clamp(20px,3vw,44px);background:var(--line)}
.svc-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(20px,4vw,56px);align-items:start}
.svc h2{font-size:clamp(1.6rem,2.8vw,2.05rem);margin-bottom:14px}
.svc .desc{color:var(--muted);margin:0}
.svc .includes{font-family:"IBM Plex Mono",monospace;font-size:.8rem;line-height:1.9;color:var(--navy);letter-spacing:.01em}
.svc .includes .lbl{display:block;font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
.svc .includes ul{list-style:none}
.svc .includes li{position:relative;padding-left:16px}
.svc .includes li::before{content:"";position:absolute;left:0;top:.85em;width:6px;height:1px;background:var(--blue)}

/* ---------- about: editorial split ---------- */
.split{padding:clamp(52px,7vw,92px) 0}
.split-inner{display:grid;grid-template-columns:220px minmax(0,1fr);gap:clamp(24px,5vw,64px);align-items:start}
.split-label{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);padding-top:8px}
.split-body p{font-size:1.06rem}
.split-body p + p{margin-top:20px}
.split-body .lead{
  font-family:"Archivo",sans-serif;font-weight:600;
  font-size:clamp(1.35rem,2.4vw,1.75rem);line-height:1.3;letter-spacing:-.02em;
  max-width:24ch;margin-bottom:26px;
}

/* ---------- about: principles ---------- */
.principles{border-top:1px solid var(--line);padding:clamp(52px,7vw,92px) 0 0}
.principles h2{font-size:clamp(1.7rem,3vw,2.2rem);margin:18px 0 clamp(30px,4vw,48px)}
.p-row{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:clamp(18px,4vw,56px);padding:28px 0;border-top:1px solid var(--line);align-items:start}
.p-row:last-child{border-bottom:1px solid var(--line)}
.p-row h3{display:flex;align-items:baseline;gap:12px}
.p-row h3::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);flex:none;transform:translateY(-2px)}
.p-row p{color:var(--muted);margin:0}

/* ---------- about: where band ---------- */
.where{background:var(--ink);color:#fff;padding:clamp(56px,7vw,96px) 0;margin-top:clamp(56px,7vw,96px)}
.where .eyebrow{color:#7FA0FF}
.where h2{font-size:clamp(1.7rem,3vw,2.2rem);margin:18px 0 22px;max-width:20ch}
.where p{color:var(--muted-dark)}
.where-map{margin-top:clamp(34px,4vw,52px)}
.where-map svg{width:100%;height:auto;max-width:760px;display:block}
.wtrace{fill:none;stroke:#2A57FF;stroke-width:1.4}
.wnode{fill:var(--ink);stroke:#2A57FF;stroke-width:1.6}
.wnode-solid{fill:#2A57FF}
.wlabel{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;fill:#C9D3F5}

/* ---------- process ladder ---------- */
.process{padding:clamp(48px,6vw,80px) 0 clamp(20px,3vw,40px)}
.step{
  display:grid;
  grid-template-columns:clamp(64px,8vw,110px) minmax(0,1fr) minmax(0,.85fr);
  gap:clamp(18px,3.5vw,48px);
  padding:clamp(30px,4vw,44px) 0;
  border-top:1px solid var(--line);
  align-items:start;
}
.step:last-of-type{border-bottom:1px solid var(--line)}
.step-num{
  font-family:"Archivo",sans-serif;font-weight:700;
  font-size:clamp(1.6rem,3vw,2.3rem);letter-spacing:-.04em;
  color:var(--line);line-height:1;padding-top:2px;transition:color .2s;
}
.step:hover .step-num{color:var(--blue)}
.step h3{font-size:1.2rem;letter-spacing:-.015em;line-height:1.25;margin-bottom:12px}
.step .desc{color:var(--muted);margin:0}
.step .out{border-left:2px solid var(--blue);padding:2px 0 2px 16px;font-size:.93rem;color:var(--navy);margin:0;max-width:none}
.step .out b{
  display:block;font-family:"IBM Plex Mono",monospace;font-weight:500;
  font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);margin-bottom:7px;
}

/* ---------- ask band ---------- */
.ask{background:var(--ink);color:#fff;padding:clamp(56px,7vw,96px) 0;margin-top:clamp(48px,6vw,84px)}
.ask .eyebrow{color:#7FA0FF}
.ask h2{font-size:clamp(1.7rem,3vw,2.2rem);margin:18px 0 22px;max-width:22ch}
.ask p{color:var(--muted-dark)}
.ask p + p{margin-top:18px}

/* ---------- contact ---------- */
.contact{padding-bottom:clamp(56px,7vw,96px)}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:clamp(28px,5vw,72px);align-items:start}
.form-box{background:var(--white);border:1px solid var(--line);padding:clamp(24px,3.5vw,40px)}
.field{margin-bottom:22px}
.field label{display:block;font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:9px}
.field .opt{color:var(--line)}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:1rem;color:var(--ink);
  background:var(--paper);border:1px solid var(--line);border-radius:2px;
  padding:13px 14px;transition:border-color .18s,background .18s;
}
.field textarea{min-height:150px;resize:vertical;line-height:1.6}
.field select{
  appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 19px) 21px,calc(100% - 14px) 21px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);background:var(--white);outline:none}
.field input:invalid:not(:placeholder-shown){border-color:var(--err)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:6px}
.helper{font-size:.9rem;color:var(--muted);margin:14px 0 0;max-width:52ch}
.note{margin-top:18px;padding:13px 16px;border-left:2px solid var(--blue);font-size:.93rem;display:none}
.note.show{display:block}
.note.ok{border-color:var(--ok);color:var(--ok)}
.note.err{border-color:var(--err);color:var(--err)}

.side h2{font-family:"IBM Plex Mono",monospace;font-weight:500;font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}
.side dl{border-top:1px solid var(--line)}
.side dt{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);padding-top:20px}
.side dd{font-size:1.02rem;padding-bottom:20px;border-bottom:1px solid var(--line);margin-top:6px}
.side dd a{text-decoration:none;border-bottom:1px solid var(--line);transition:border-color .18s}
.side dd a:hover{border-color:var(--blue)}
.side .small{font-size:.92rem;color:var(--muted)}
.side-cta{margin-top:28px}
.side-cta p{font-size:.95rem;color:var(--muted);margin-bottom:14px}

/* ---------- closing ---------- */
.closing{padding:clamp(60px,8vw,104px) 0;border-top:1px solid var(--line)}
.closing--flush{border-top:0}
.closing-inner{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap}
.closing h2{max-width:18ch;margin-top:18px}
.closing p{margin-top:20px;color:var(--muted)}
.closing-side{display:flex;flex-direction:column;gap:16px}
.contact-line{font-family:"IBM Plex Mono",monospace;font-size:.88rem;color:var(--muted);letter-spacing:.02em}
.contact-line a{text-decoration:none;border-bottom:1px solid var(--line)}
.contact-line a:hover{border-color:var(--blue)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--muted-dark);padding:52px 0 40px;font-size:.9rem}
.footer-top{display:flex;justify-content:space-between;gap:36px;flex-wrap:wrap;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.13)}
.footer-logo{height:38px;width:auto;display:block}
.footer-tag{margin-top:16px;max-width:34ch}
.footer-cols{display:flex;gap:56px;flex-wrap:wrap}
.footer-cols h4{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:#fff;font-weight:500;margin-bottom:14px}
.footer-cols ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-cols a{text-decoration:none;transition:color .18s}
.footer-cols a:hover{color:#fff}
.footer-bottom{padding-top:26px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.82rem}

/* ==========================================================
   responsive
   ========================================================== */
@media (max-width:1000px){
  .cards{grid-template-columns:repeat(2,1fr)}
}

@media (max-width:900px){
  .contact-grid{grid-template-columns:1fr}
  .step{grid-template-columns:clamp(50px,10vw,70px) minmax(0,1fr);gap:18px}
  .step .out{grid-column:2;margin-top:18px}
}

@media (max-width:860px){
  .nav-toggle{display:block}
  .nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    padding:8px var(--pad) 24px;
    transform:translateY(-8px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .nav.open{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav a{font-size:1.1rem;padding:16px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav a::after{display:none}
  .nav a[aria-current="page"]{color:var(--blue)}

  .hero-grid{grid-template-columns:1fr}
  .hero-art{order:-1;max-width:460px}
  .why-list{grid-template-columns:1fr}
  .svc-inner{grid-template-columns:1fr;gap:22px}
  .split-inner{grid-template-columns:1fr;gap:20px}
  .p-row{grid-template-columns:1fr;gap:12px}
}

@media (max-width:640px){
  .header-right .btn{display:none}
  .brand img{height:28px}
}

@media (max-width:560px){
  body{font-size:16px}
  .cards{grid-template-columns:1fr}
  .closing-inner{align-items:flex-start}
  .row2{grid-template-columns:1fr;gap:0}
}