/* ============================================
   Embedded Solution — Design System
   Signature: PCB silkscreen trace connecting
   each section, with real reference-designator
   pads (U1, R1, IC2...) instead of generic 01/02/03
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --ink:#0A0D12;
  --panel:#10141C;
  --panel-2:#151B26;
  --border:#212836;
  --teal:#2DD4BF;
  --teal-dim:#1B7A6E;
  --amber:#F5A623;
  --text:#E9EEF5;
  --muted:#8B96A8;
  --muted-2:#5C6577;

  --display:'Space Grotesk',sans-serif;
  --body:'Inter',sans-serif;
  --mono:'JetBrains Mono',monospace;

  --maxw:1180px;
}

*{margin:0;padding:0;box-sizing:border-box;}

html{scroll-behavior:smooth;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}

body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;}

h1,h2,h3,h4{font-family:var(--display);font-weight:600;letter-spacing:-0.01em;line-height:1.15;}
h1{font-size:clamp(2.4rem,5vw,4.2rem);font-weight:700;}
h2{font-size:clamp(1.8rem,3.2vw,2.6rem);}
h3{font-size:1.3rem;}
p{color:var(--muted);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:0.78rem;letter-spacing:0.08em;
  color:var(--teal);text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 8px var(--teal);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;border-radius:6px;
  font-family:var(--mono);font-size:0.88rem;font-weight:500;letter-spacing:0.02em;
  border:1px solid var(--border);cursor:pointer;transition:all .2s ease;
}
.btn-primary{background:var(--teal);color:#06110F;border-color:var(--teal);}
.btn-primary:hover{background:#54e3d1;box-shadow:0 0 24px rgba(45,212,191,.35);}
.btn-ghost{background:transparent;color:var(--text);}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal);}

/* ---------- Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(10,13,18,0.88);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;}
.logo{font-family:var(--mono);font-size:1.05rem;font-weight:600;letter-spacing:0.01em;display:flex;align-items:center;gap:10px;}
.logo .chip{color:var(--teal);}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{font-size:0.92rem;color:var(--muted);transition:color .2s;position:relative;}
.nav-links a:hover,.nav-links a.active{color:var(--text);}
.nav-links a.active::after{content:'';position:absolute;left:0;right:0;bottom:-26px;height:2px;background:var(--teal);}
.nav-cta{display:flex;align-items:center;gap:16px;}
.nav-toggle{display:none;}

@media (max-width:860px){
  .nav-links{position:fixed;top:76px;left:0;right:0;background:var(--panel-2);flex-direction:column;align-items:flex-start;padding:24px 32px;gap:20px;border-bottom:1px solid var(--border);transform:translateY(-130%);transition:transform .25s ease;}
  .nav-links.open{transform:translateY(0);}
  .nav-cta .btn-ghost{display:none;}
  .nav-toggle{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;}
  .nav-toggle span{width:22px;height:2px;background:var(--text);}
}

/* ---------- PCB Trace signature element ---------- */
.trace-rail{
  position:absolute;left:50%;top:0;bottom:0;width:2px;
  transform:translateX(-0.5px);
  background:repeating-linear-gradient(to bottom, var(--border) 0 6px, transparent 6px 12px);
  z-index:0;
}
.pad{
  position:relative;z-index:1;
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;
  background:var(--panel);border:1.5px solid var(--teal);
  font-family:var(--mono);font-size:0.72rem;color:var(--teal);
  margin:0 auto 18px;
}

/* ---------- Section rhythm ---------- */
section{padding:96px 0;position:relative;}
.section-head{max-width:640px;margin-bottom:56px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- Hero ---------- */
.hero{padding:120px 0 100px;overflow:hidden;position:relative;}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:60px;align-items:center;}
.hero h1{margin-bottom:22px;}
.hero .lead{font-size:1.15rem;max-width:520px;margin-bottom:36px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px;}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;}
.hero-stat b{display:block;font-family:var(--display);font-size:1.7rem;color:var(--text);}
.hero-stat span{font-family:var(--mono);font-size:0.75rem;color:var(--muted-2);text-transform:uppercase;letter-spacing:0.06em;}

.hero-visual{position:relative;aspect-ratio:1/1;}
.trace-svg{width:100%;height:100%;}
.trace-svg path{fill:none;stroke:var(--border);stroke-width:1.5;}
.trace-svg .live{stroke:var(--teal);stroke-dasharray:6 10;animation:dash 6s linear infinite;}
.trace-svg circle{fill:var(--panel);stroke:var(--teal);stroke-width:1.5;}
.trace-svg .amber{stroke:var(--amber);fill:var(--amber);}
@keyframes dash{to{stroke-dashoffset:-160;}}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{max-width:420px;margin:0 auto;}
}

/* ---------- Cards ---------- */
.grid{display:grid;gap:24px;}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media (max-width:960px){.grid-4{grid-template-columns:repeat(2,1fr);} .grid-3{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--panel);border:1px solid var(--border);border-radius:10px;
  padding:28px;transition:border-color .2s, transform .2s;
}
.card:hover{border-color:var(--teal-dim);transform:translateY(-3px);}
.card .ref{font-family:var(--mono);font-size:0.75rem;color:var(--amber);margin-bottom:14px;display:block;}
.card h3{margin-bottom:10px;}
.card p{font-size:0.94rem;}
.card a.more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-family:var(--mono);font-size:0.82rem;color:var(--teal);}

/* ---------- Image frame ---------- */
.frame{border-radius:10px;overflow:hidden;border:1px solid var(--border);position:relative;}
.frame img{width:100%;height:100%;object-fit:cover;}
.frame::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(10,13,18,.5));}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
@media (max-width:900px){.split{grid-template-columns:1fr;}}

/* ---------- Stats bar ---------- */
.stats-bar{border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:44px 0;}
.stats-bar .grid-4{text-align:center;}

/* ---------- Process list ---------- */
.process-row{display:grid;grid-template-columns:80px 1fr;gap:24px;padding:28px 0;border-top:1px solid var(--border);}
.process-row:last-child{border-bottom:1px solid var(--border);}
.process-row .code{font-family:var(--mono);color:var(--amber);font-size:0.85rem;padding-top:4px;}

/* ---------- Table (specs) ---------- */
.spec-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:0.88rem;}
.spec-table td{padding:14px 0;border-top:1px solid var(--border);}
.spec-table td:first-child{color:var(--muted-2);width:40%;}
.spec-table td:last-child{color:var(--text);}

/* ---------- CTA band ---------- */
.cta-band{background:var(--panel-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center;}
.cta-band h2{margin-bottom:16px;}
.cta-band p{max-width:520px;margin:0 auto 32px;}

/* ---------- Footer ---------- */
footer{padding:64px 0 32px;border-top:1px solid var(--border);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px;}
.footer-grid h4{font-family:var(--mono);font-size:0.78rem;color:var(--muted-2);text-transform:uppercase;letter-spacing:0.06em;margin-bottom:18px;}
.footer-grid ul li{margin-bottom:10px;}
.footer-grid ul li a{color:var(--muted);font-size:0.92rem;}
.footer-grid ul li a:hover{color:var(--teal);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:28px;border-top:1px solid var(--border);font-family:var(--mono);font-size:0.78rem;color:var(--muted-2);}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;}}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{padding:72px 0 64px;border-bottom:1px solid var(--border);}
.breadcrumb{font-family:var(--mono);font-size:0.8rem;color:var(--muted-2);margin-bottom:18px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--teal);}

/* ---------- Form ---------- */
.form-field{margin-bottom:20px;}
.form-field label{display:block;font-family:var(--mono);font-size:0.78rem;color:var(--muted);margin-bottom:8px;text-transform:uppercase;letter-spacing:0.05em;}
.form-field input,.form-field textarea,.form-field select{
  width:100%;background:var(--panel);border:1px solid var(--border);border-radius:6px;
  padding:13px 14px;color:var(--text);font-family:var(--body);font-size:0.95rem;
}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{outline:none;border-color:var(--teal);}
.form-field textarea{resize:vertical;min-height:120px;}

.contact-card{display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--border);}
.contact-card:last-child{border-bottom:1px solid var(--border);}
.contact-card .ico{width:40px;height:40px;border-radius:8px;border:1px solid var(--teal-dim);display:flex;align-items:center;justify-content:center;color:var(--teal);flex-shrink:0;font-family:var(--mono);}
.contact-card h4{font-size:0.95rem;margin-bottom:4px;}
.contact-card p{font-size:0.9rem;}

/* focus visibility */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}

/* ---------- Preloader (logo intro, ~1s, every page) ---------- */
#preloader{
  position:fixed;inset:0;z-index:9999;
  background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .45s ease, visibility .45s ease;
}
#preloader.hide{opacity:0;visibility:hidden;pointer-events:none;}
.preloader-logo{
  font-family:var(--mono);font-size:1.3rem;font-weight:600;letter-spacing:0.02em;
  color:var(--text);display:flex;align-items:center;gap:12px;
  opacity:0;animation:logoIn .7s ease forwards;
}
.preloader-logo .chip{
  color:var(--teal);font-size:1.5rem;
  animation:chipPulse 1s ease infinite;
}
@keyframes logoIn{
  0%{opacity:0;transform:translateY(8px) scale(.96);}
  100%{opacity:1;transform:translateY(0) scale(1);}
}
@keyframes chipPulse{
  0%,100%{text-shadow:0 0 0 rgba(45,212,191,0);}
  50%{text-shadow:0 0 16px rgba(45,212,191,.7);}
}
@media (prefers-reduced-motion: reduce){
  .preloader-logo{animation:none;opacity:1;}
  .preloader-logo .chip{animation:none;}
}

/* ---------- Image-backed service cards ---------- */
.card-img{
  border-radius:8px;overflow:hidden;margin-bottom:16px;aspect-ratio:16/10;border:1px solid var(--border);
}
.card-img img{width:100%;height:100%;object-fit:cover;}

.svc-row{display:grid;grid-template-columns:140px 1fr auto;align-items:center;gap:28px;}
.svc-row .thumb{border-radius:8px;overflow:hidden;aspect-ratio:4/3;border:1px solid var(--border);}
.svc-row .thumb img{width:100%;height:100%;object-fit:cover;}
@media (max-width:640px){
  .svc-row{grid-template-columns:1fr;}
  .svc-row .thumb{aspect-ratio:16/9;}
}