/* ============================================================
   SmartLine Industrial — shared stylesheet
   Design tokens
   ============================================================ */
:root{
  --ink:      #0a0e16;   /* base background, graphite-navy */
  --ink-2:    #0d1320;   /* slightly lifted surface */
  --panel:    #10161f;   /* card surface */
  --panel-2:  #141b26;   /* card hover surface */
  --line:     #212a3a;   /* hairline borders */
  --line-2:   #2a3549;   /* stronger borders */
  --signal:   #35d6e8;   /* fiber-signal cyan — primary accent */
  --signal-dim: #1a8b98;
  --amber:    #ffb238;   /* NOC amber — secondary accent */
  --paper:    #eef2f7;   /* primary text */
  --mute:     #8996ab;   /* secondary text */
  --mute-2:   #5c6880;   /* tertiary / faint text */

  --display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; }
::selection{ background:var(--signal); color:var(--ink); }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

:focus-visible{ outline:2px solid var(--signal); outline-offset:3px; }

.wrap{ max-width:1220px; margin:0 auto; padding:0 2rem; }

/* ---------------- Mono utility bits ---------------- */
.tag{
  font-family:var(--mono);
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--signal);
}
.tag.amber{ color:var(--amber); }
.readout{
  font-family:var(--mono);
  font-size:0.82rem;
  color:var(--mute);
  letter-spacing:0.02em;
}
.readout b{ color:var(--paper); font-weight:600; }

/* ---------------- Header / Nav ---------------- */
header{
  position:sticky; top:0; z-index:100;
  background:rgba(10,14,22,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-container{
  display:flex; align-items:center; justify-content:space-between;
  padding:1.1rem 2rem;
  max-width:1220px; margin:0 auto;
}
.logo{
  font-family:var(--display);
  font-weight:700;
  font-size:1.2rem;
  letter-spacing:0.01em;
  text-decoration:none;
  color:var(--paper);
  display:flex; align-items:center; gap:0.55rem;
}
.logo .mark{
  width:9px; height:9px; border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 3px rgba(53,214,232,0.18), 0 0 10px rgba(53,214,232,0.6);
  flex-shrink:0;
}
.logo .sub{ color:var(--mute); font-weight:400; }

nav.main-nav ul{
  display:flex; list-style:none; gap:2.1rem;
  font-size:0.92rem;
}
nav.main-nav a{
  text-decoration:none; color:var(--mute);
  transition:color 0.15s;
  position:relative;
  padding-bottom:3px;
}
nav.main-nav a:hover{ color:var(--paper); }
nav.main-nav a.active{ color:var(--paper); }
nav.main-nav a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-6px; height:2px;
  background:var(--signal);
}

.nav-right{ display:flex; align-items:center; gap:1.4rem; }
.nav-status{ display:flex; align-items:center; gap:0.5rem; }
.nav-status .dot{
  width:6px; height:6px; border-radius:50%; background:#3ee08a;
  box-shadow:0 0 6px rgba(62,224,138,0.8);
}

.btn{
  display:inline-flex; align-items:center; gap:0.5rem;
  font-family:var(--mono);
  font-size:0.8rem; letter-spacing:0.04em;
  text-decoration:none;
  padding:0.65rem 1.15rem;
  border-radius:3px;
  border:1px solid var(--line-2);
  color:var(--paper);
  transition:border-color 0.15s, background 0.15s, transform 0.15s;
  white-space:nowrap;
}
.btn:hover{ border-color:var(--signal); color:var(--signal); }
.btn.primary{
  background:var(--signal); color:var(--ink); border-color:var(--signal);
  font-weight:600;
}
.btn.primary:hover{ background:#5be2f0; color:var(--ink); transform:translateY(-1px); }

.menu-toggle{
  display:none; background:none; border:1px solid var(--line-2); border-radius:3px;
  color:var(--paper); width:38px; height:38px; cursor:pointer;
}

/* ---------------- Hero ---------------- */
.hero{
  position:relative;
  padding:5.5rem 2rem 4.5rem;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(1100px 500px at 82% -10%, rgba(53,214,232,0.10), transparent 60%),
    var(--ink);
}
.hero-grid{
  max-width:1220px; margin:0 auto;
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:3rem; align-items:center;
}
.hero .eyebrow{
  display:inline-flex; align-items:center; gap:0.6rem;
  margin-bottom:1.4rem;
}
.hero .eyebrow .line{ width:26px; height:1px; background:var(--signal); }
.hero h1{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(2.1rem, 4.2vw, 3.3rem);
  line-height:1.08;
  letter-spacing:-0.01em;
  color:var(--paper);
  margin-bottom:1.3rem;
}
.hero h1 .accent{ color:var(--signal); }
.hero p.lead{
  color:var(--mute); font-size:1.08rem; max-width:46ch; margin-bottom:2.1rem;
}
.hero-ctas{ display:flex; gap:0.9rem; flex-wrap:wrap; }

.hero-visual{ position:relative; }
.hero-visual svg{ width:100%; height:auto; display:block; }

/* stat strip */
.stat-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--ink-2);
}
.stat-strip .wrap{
  display:grid; grid-template-columns:repeat(4,1fr);
  padding:1.4rem 2rem;
}
.stat{ padding:0 1.4rem; border-left:1px solid var(--line); }
.stat:first-child{ border-left:none; padding-left:0; }
.stat .num{
  font-family:var(--mono); font-size:1.5rem; font-weight:600; color:var(--paper);
  display:block;
}
.stat .num .unit{ font-size:0.95rem; color:var(--signal); }
.stat .label{
  font-family:var(--mono); font-size:0.7rem; letter-spacing:0.1em;
  color:var(--mute); text-transform:uppercase; margin-top:0.25rem; display:block;
}

/* ---------------- Sections ---------------- */
.section{ padding:5rem 2rem; }
.section-head{ max-width:640px; margin-bottom:3rem; }
.section-head .tag{ display:block; margin-bottom:0.8rem; }
.section-head h2{
  font-family:var(--display); font-weight:700; font-size:clamp(1.6rem,2.6vw,2.2rem);
  color:var(--paper); letter-spacing:-0.01em; margin-bottom:0.9rem;
}
.section-head p{ color:var(--mute); font-size:1.02rem; }

.route-divider{
  display:flex; align-items:center; gap:0.9rem;
  color:var(--mute-2); margin:0 0 2.5rem;
}
.route-divider::before, .route-divider::after{
  content:""; flex:1; height:1px;
  background:repeating-linear-gradient(90deg, var(--line-2) 0 6px, transparent 6px 11px);
}

/* ---------------- Cards / grid ---------------- */
.grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(270px,1fr)); gap:1.6rem; }

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:6px;
  overflow:hidden;
  transition:transform 0.2s, border-color 0.2s, background 0.2s;
  display:flex; flex-direction:column;
}
.card:hover{ transform:translateY(-3px); border-color:var(--line-2); background:var(--panel-2); }
.card .media{
  position:relative; aspect-ratio:16/10; overflow:hidden;
  background:var(--ink-2);
}
.card .media img{
  width:100%; height:100%; object-fit:cover;
  filter:saturate(0.92) brightness(0.85);
  transition:transform 0.5s, filter 0.3s;
}
.card:hover .media img{ transform:scale(1.045); filter:saturate(1) brightness(0.92); }
.card .media::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(10,14,22,0) 40%, rgba(10,14,22,0.55) 100%);
}
.card .code{
  position:absolute; top:0.8rem; left:0.8rem; z-index:2;
  font-family:var(--mono); font-size:0.68rem; letter-spacing:0.08em;
  background:rgba(10,14,22,0.72); border:1px solid var(--line-2);
  color:var(--signal); padding:0.3rem 0.55rem; border-radius:3px;
  backdrop-filter:blur(3px);
}
.card .body{ padding:1.5rem 1.5rem 1.7rem; flex:1; display:flex; flex-direction:column; }
.card h3{
  font-family:var(--display); font-weight:700; font-size:1.12rem;
  color:var(--paper); margin-bottom:0.6rem;
}
.card p{ color:var(--mute); font-size:0.92rem; flex:1; }
.card .spec{
  margin-top:1.1rem; padding-top:1rem; border-top:1px solid var(--line);
  font-family:var(--mono); font-size:0.74rem; color:var(--mute-2);
  display:flex; justify-content:space-between; gap:0.5rem; flex-wrap:wrap;
}
.card .spec span b{ color:var(--mute); font-weight:500; }

/* ---------------- Split feature (image + text) ---------------- */
.split{
  display:grid; grid-template-columns:1fr 1fr; gap:3rem; align-items:center;
}
.split.reverse{ direction:rtl; }
.split.reverse > *{ direction:ltr; }
.split .media{
  border-radius:6px; overflow:hidden; border:1px solid var(--line);
  aspect-ratio:4/3;
}
.split .media img{ width:100%; height:100%; object-fit:cover; filter:saturate(0.92) brightness(0.9); }
.split h3{ font-family:var(--display); font-size:1.5rem; color:var(--paper); margin-bottom:1rem; }
.split p{ color:var(--mute); margin-bottom:1.2rem; }
.split ul{ list-style:none; }
.split ul li{
  color:var(--mute); font-size:0.92rem; padding:0.5rem 0; border-top:1px solid var(--line);
  display:flex; gap:0.6rem;
}
.split ul li:first-child{ border-top:none; }
.split ul li::before{ content:"→"; color:var(--signal); font-family:var(--mono); flex-shrink:0; }

/* ---------------- CTA band ---------------- */
.cta-band{
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:
    radial-gradient(700px 300px at 15% 50%, rgba(53,214,232,0.08), transparent 60%),
    var(--ink-2);
  padding:4rem 2rem; text-align:center;
}
.cta-band h2{
  font-family:var(--display); font-weight:700; font-size:clamp(1.5rem,3vw,2.1rem);
  margin-bottom:1rem; color:var(--paper);
}
.cta-band p{ color:var(--mute); margin-bottom:1.8rem; }
.cta-band .hero-ctas{ justify-content:center; }

/* ---------------- About / address ---------------- */
.address-box{
  margin-top:1.6rem; padding:1.4rem 1.6rem; border-radius:6px;
  background:var(--panel); border:1px solid var(--line);
  display:inline-block; text-align:left;
}
.address-box .tag{ display:block; margin-bottom:0.5rem; }
.address-box p{ color:var(--paper); font-size:0.95rem; }

/* ---------------- Footer ---------------- */
footer{ border-top:1px solid var(--line); background:var(--ink-2); }
.footer-grid{
  max-width:1220px; margin:0 auto; padding:3.4rem 2rem 2rem;
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:2.5rem;
}
footer .logo{ margin-bottom:0.9rem; }
footer .col h4{
  font-family:var(--mono); font-size:0.72rem; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--mute-2); margin-bottom:1rem;
}
footer .col p{ color:var(--mute); font-size:0.88rem; max-width:32ch; }
footer .col ul{ list-style:none; }
footer .col ul li{ margin-bottom:0.6rem; }
footer .col ul a{ text-decoration:none; color:var(--mute); font-size:0.9rem; transition:color 0.15s; }
footer .col ul a:hover{ color:var(--signal); }
.footer-bottom{
  border-top:1px solid var(--line);
  padding:1.4rem 2rem; max-width:1220px; margin:0 auto;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:0.8rem;
  color:var(--mute-2); font-size:0.8rem; font-family:var(--mono);
}

/* ---------------- Page header (inner pages) ---------------- */
.page-hero{
  padding:3.6rem 2rem 3rem; border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 400px at 90% -20%, rgba(53,214,232,0.09), transparent 60%),
    var(--ink);
}
.page-hero .wrap{ max-width:1220px; }
.page-hero h1{
  font-family:var(--display); font-weight:700; font-size:clamp(1.9rem,3.6vw,2.7rem);
  color:var(--paper); margin-bottom:0.9rem; letter-spacing:-0.01em;
}
.page-hero p{ color:var(--mute); max-width:56ch; font-size:1.02rem; }
.breadcrumb{
  font-family:var(--mono); font-size:0.76rem; color:var(--mute-2);
  margin-bottom:1.1rem; letter-spacing:0.04em;
}
.breadcrumb .accent{ color:var(--signal); }

/* ---------------- Signal path animation ---------------- */
.route-path{ stroke-dasharray:6 7; animation:dash 30s linear infinite; }
@keyframes dash{ to{ stroke-dashoffset:-260; } }
.pulse-dot{ animation:pulseglow 2.4s ease-in-out infinite; }
@keyframes pulseglow{
  0%,100%{ opacity:0.35; r:3.2; }
  50%{ opacity:1; r:4.4; }
}
.node-label{ font-family:var(--mono); font-size:11px; fill:var(--mute); letter-spacing:0.04em; }

/* ---------------- Responsive ---------------- */
@media (max-width:920px){
  nav.main-nav{ display:none; }
  nav.main-nav.open{
    display:block; position:absolute; top:100%; left:0; right:0;
    background:var(--ink-2); border-bottom:1px solid var(--line);
    padding:1rem 1.2rem 1.4rem;
  }
  nav.main-nav.open ul{ flex-direction:column; gap:0.2rem; }
  nav.main-nav.open a{ display:block; padding:0.75rem 0.2rem; }
  header{ position:sticky; }
  .nav-container{ position:relative; }
  .menu-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .hero-grid{ grid-template-columns:1fr; }
  .hero-visual{ order:-1; max-width:420px; margin:0 auto 1rem; }
  .stat-strip .wrap{ grid-template-columns:repeat(2,1fr); row-gap:1.4rem; }
  .stat:nth-child(3){ border-left:none; padding-left:0; }
  .split, .split.reverse{ grid-template-columns:1fr; direction:ltr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:560px){
  .nav-container{ padding:1rem 1.2rem; }
  .hero{ padding:3rem 1.2rem 3rem; }
  .section{ padding:3.2rem 1.2rem; }
  .stat-strip .wrap{ grid-template-columns:1fr 1fr; padding:1.2rem; }
  .footer-grid{ grid-template-columns:1fr; padding:2.6rem 1.2rem 1.6rem; }
  .footer-bottom{ flex-direction:column; padding:1.2rem; }
}