/* ============================================================
   INFOENC — Design System
   Gold = trust / human intelligence · Cyan = AI / infrastructure
   ============================================================ */

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

:root{
  --bg: #05070D;
  --bg2: #0B1323;
  --card: #111827;
  --card-border: rgba(165,180,199,0.12);
  --gold: #F6B63C;
  --gold-light: #FFD470;
  --cyan: #25D9FF;
  --blue: #00AEEF;
  --white: #FFFFFF;
  --gray: #A5B4C7;
  --gray-dim: #6B7A8E;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1280px;
  --nav-h: 84px;

  --ease: cubic-bezier(.16,.84,.44,1);
}

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

html{ scroll-behavior:smooth; }

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

body{
  background:var(--bg);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

::selection{ background:var(--gold); color:var(--bg); }

a{ color:inherit; text-decoration:none; }

img{ max-width:100%; display:block; }

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

/* ---------- Custom cursor (desktop only) ---------- */
.cursor-dot, .cursor-ring{
  position:fixed; top:0; left:0; pointer-events:none; z-index:9999;
  border-radius:50%; transform:translate(-50%,-50%);
  will-change:transform;
}
.cursor-dot{ width:6px; height:6px; background:var(--cyan); }
.cursor-ring{
  width:36px; height:36px; border:1px solid rgba(37,217,255,0.4);
  transition:width .25s var(--ease), height .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.cursor-ring.is-active{
  width:56px; height:56px; border-color:var(--gold);
  background:rgba(246,182,60,0.06);
}
@media (hover:none), (pointer:coarse){
  .cursor-dot, .cursor-ring{ display:none; }
}

/* ---------- Ambient grid / noise backdrop ---------- */
.bg-grid{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(165,180,199,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(165,180,199,0.045) 1px, transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

/* ---------- Nav ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  height:var(--nav-h);
  display:flex; align-items:center;
  background:linear-gradient(to bottom, rgba(5,7,13,0.92), rgba(5,7,13,0));
  backdrop-filter:blur(6px);
  transition:background .3s var(--ease), border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  background:rgba(5,7,13,0.86);
  border-bottom-color:var(--card-border);
}
.nav .container{ display:flex; align-items:center; justify-content:space-between; width:100%; }

.brand{ display:flex; align-items:center; gap:12px; font-family:var(--font-display); font-weight:600; font-size:19px; letter-spacing:0.02em; }
.brand svg{ width:30px; height:30px; }
.brand-name{ color:var(--white); }
.brand-name span{ color:var(--gold); }

.nav-links{ display:flex; align-items:center; gap:40px; }
.nav-links a{
  font-size:14px; color:var(--gray); font-weight:500; letter-spacing:0.02em;
  position:relative; padding:6px 0;
}
.nav-links a::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:1px;
  background:var(--cyan); transition:width .3s var(--ease);
}
.nav-links a:hover{ color:var(--white); }
.nav-links a:hover::after{ width:100%; }

.nav-cta{
  font-family:var(--font-mono); font-size:13px; padding:11px 22px;
  border:1px solid var(--gold); color:var(--gold-light); border-radius:2px;
  transition:all .3s var(--ease);
}
.nav-cta:hover{ background:var(--gold); color:var(--bg); box-shadow:0 0 24px rgba(246,182,60,0.35); }

.nav-toggle{ display:none; }

@media (max-width:960px){
  .nav-links{
    position:fixed; top:var(--nav-h); left:0; right:0; bottom:0;
    background:var(--bg); flex-direction:column; justify-content:flex-start;
    padding:40px 32px; gap:28px; transform:translateX(100%);
    transition:transform .35s var(--ease);
  }
  .nav-links.is-open{ transform:translateX(0); }
  .nav-links a{ font-size:20px; }
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px; width:26px; cursor:pointer;
    background:none; border:none; z-index:1001;
  }
  .nav-toggle span{ height:1.5px; background:var(--white); width:100%; transition:all .3s var(--ease); }
}

/* ---------- Typography ---------- */
.eyebrow{
  font-family:var(--font-mono); font-size:12px; letter-spacing:0.18em; text-transform:uppercase;
  color:var(--cyan); display:flex; align-items:center; gap:10px; margin-bottom:20px;
}
.eyebrow::before{ content:''; width:24px; height:1px; background:var(--cyan); display:inline-block; }

h1,h2,h3,h4{ font-family:var(--font-display); font-weight:600; letter-spacing:-0.01em; }

h1{ font-size:clamp(2.6rem, 6vw, 5.4rem); line-height:1.04; }
h2{ font-size:clamp(2rem, 3.6vw, 3.2rem); line-height:1.1; }
h3{ font-size:clamp(1.3rem, 2vw, 1.7rem); line-height:1.25; }

.lead{ font-size:clamp(1.05rem, 1.4vw, 1.25rem); color:var(--gray); max-width:640px; }

.text-gradient{
  background:linear-gradient(100deg, var(--gold-light), var(--gold) 45%, var(--cyan) 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* ---------- Buttons ---------- */
.btn{
  position:relative; display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:14px; letter-spacing:0.02em;
  padding:15px 30px; border-radius:2px; overflow:hidden; cursor:pointer;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--gold); color:var(--bg); font-weight:600; }
.btn-primary:hover{ box-shadow:0 8px 32px rgba(246,182,60,0.3); }
.btn-ghost{ border:1px solid var(--card-border); color:var(--white); }
.btn-ghost:hover{ border-color:var(--cyan); box-shadow:0 0 24px rgba(37,217,255,0.15); }
.btn-arrow{ transition:transform .3s var(--ease); }
.btn:hover .btn-arrow{ transform:translateX(4px); }

/* ---------- Sections ---------- */
section{ position:relative; z-index:1; padding:140px 0; }
.section-head{ max-width:680px; margin-bottom:64px; }

/* ---------- Hero (home) ---------- */
.hero{
  position:relative; height:100vh; min-height:720px;
  display:flex; align-items:center; padding:0; overflow:hidden;
}
#hero-canvas{ position:absolute; inset:0; z-index:0; }
.hero-content{ position:relative; z-index:2; width:100%; }
.hero-content .container{ display:flex; flex-direction:column; gap:28px; }
.hero-kicker{ font-family:var(--font-mono); font-size:13px; letter-spacing:0.2em; color:var(--gray); text-transform:uppercase; }
.hero-actions{ display:flex; gap:18px; margin-top:12px; flex-wrap:wrap; }
.hero-scroll{
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%); z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:11px; color:var(--gray-dim); letter-spacing:0.15em;
}
.hero-scroll .line{ width:1px; height:36px; background:linear-gradient(var(--cyan), transparent); animation:scrollpulse 2s ease-in-out infinite; }
@keyframes scrollpulse{ 0%,100%{ opacity:.3; } 50%{ opacity:1; } }

/* ---------- Stat strip ---------- */
.stat-strip{ padding:56px 0; border-top:1px solid var(--card-border); border-bottom:1px solid var(--card-border); }
.stat-strip .container{ display:grid; grid-template-columns:repeat(4,1fr); gap:32px; }
.stat{ text-align:left; }
.stat .num{ font-family:var(--font-display); font-size:clamp(1.8rem,3vw,2.6rem); color:var(--white); font-weight:700; }
.stat .num span{ color:var(--gold); }
.stat .label{ font-family:var(--font-mono); font-size:12px; color:var(--gray-dim); margin-top:6px; letter-spacing:0.05em; }
@media (max-width:800px){ .stat-strip .container{ grid-template-columns:repeat(2,1fr); } }

/* ---------- Network / map section ---------- */
.network-section{ background:var(--bg2); }
.network-visual{ position:relative; height:520px; border:1px solid var(--card-border); border-radius:4px; overflow:hidden; margin-top:56px; background:radial-gradient(ellipse at 30% 40%, rgba(37,217,255,0.06), transparent 60%); }
#network-canvas{ position:absolute; inset:0; }

/* ---------- Services grid ---------- */
.services-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--card-border); border:1px solid var(--card-border); }
@media (max-width:960px){ .services-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .services-grid{ grid-template-columns:1fr; } }

.service-card{
  background:var(--bg); padding:40px 32px; display:flex; flex-direction:column; gap:18px;
  position:relative; transition:background .35s var(--ease);
}
.service-card:hover{ background:var(--card); }
.service-card .idx{ font-family:var(--font-mono); font-size:12px; color:var(--gray-dim); }
.service-card .icon{ width:38px; height:38px; }
.service-card h3{ margin-top:4px; }
.service-card p{ color:var(--gray); font-size:14.5px; flex:1; }
.service-card .go{ display:flex; align-items:center; gap:8px; font-family:var(--font-mono); font-size:12.5px; color:var(--cyan); letter-spacing:0.04em; }
.service-card .go svg{ transition:transform .3s var(--ease); }
.service-card:hover .go svg{ transform:translateX(4px); }
.service-card::before{
  content:''; position:absolute; top:0; left:0; width:0; height:2px;
  background:linear-gradient(90deg, var(--gold), var(--cyan)); transition:width .4s var(--ease);
}
.service-card:hover::before{ width:100%; }

/* ---------- Cards (generic) ---------- */
.card{ background:var(--card); border:1px solid var(--card-border); border-radius:4px; padding:36px; }

/* ---------- Approach steps ---------- */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--card-border); border:1px solid var(--card-border); margin-top:56px; }
@media (max-width:900px){ .steps{ grid-template-columns:repeat(2,1fr); } }
.step{ background:var(--bg2); padding:32px 28px; }
.step .n{ font-family:var(--font-mono); color:var(--gold); font-size:13px; }
.step h4{ margin:14px 0 10px; font-size:17px; }
.step p{ color:var(--gray); font-size:14px; }

/* ---------- Reveal-on-scroll ---------- */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible{ opacity:1; transform:translateY(0); }

/* ---------- Page hero (service pages) ---------- */
.page-hero{
  position:relative; padding-top:calc(var(--nav-h) + 120px); padding-bottom:100px; overflow:hidden;
}
#ambient-canvas{ position:absolute; inset:0; z-index:0; opacity:0.75; }
.page-hero .container{ position:relative; z-index:2; }
.breadcrumb{ font-family:var(--font-mono); font-size:12.5px; color:var(--gray-dim); margin-bottom:24px; }
.breadcrumb a:hover{ color:var(--cyan); }

.two-col{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:64px; align-items:start; }
@media (max-width:900px){ .two-col{ grid-template-columns:1fr; } }

.deliverables{ list-style:none; display:flex; flex-direction:column; gap:16px; }
.deliverables li{ display:flex; gap:14px; align-items:flex-start; color:var(--gray); font-size:15px; }
.deliverables li::before{ content:''; width:6px; height:6px; margin-top:8px; flex:none; background:var(--cyan); transform:rotate(45deg); }

.related-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:900px){ .related-grid{ grid-template-columns:1fr; } }
.related-card{ background:var(--bg2); border:1px solid var(--card-border); padding:26px; transition:border-color .3s var(--ease); }
.related-card:hover{ border-color:var(--gold); }
.related-card .idx{ font-family:var(--font-mono); font-size:11px; color:var(--gray-dim); }
.related-card h4{ margin:10px 0 8px; font-size:16px; font-family:var(--font-display); }
.related-card span{ font-family:var(--font-mono); font-size:12px; color:var(--cyan); }

/* ---------- CTA banner ---------- */
.cta-banner{
  background:linear-gradient(135deg, rgba(246,182,60,0.09), rgba(37,217,255,0.06));
  border:1px solid var(--card-border); border-radius:4px; padding:64px 56px;
  display:flex; align-items:center; justify-content:space-between; gap:40px; flex-wrap:wrap;
}
@media (max-width:700px){ .cta-banner{ padding:44px 28px; } }

/* ---------- Footer ---------- */
footer{ position:relative; z-index:1; padding:80px 0 40px; border-top:1px solid var(--card-border); background:var(--bg2); }
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:48px; margin-bottom:64px; }
@media (max-width:800px){ .footer-top{ grid-template-columns:1fr 1fr; } }
.footer-brand p{ color:var(--gray); font-size:14px; margin-top:16px; max-width:280px; }
.footer-col h5{ font-family:var(--font-mono); font-size:12px; letter-spacing:0.1em; color:var(--gray-dim); text-transform:uppercase; margin-bottom:18px; }
.footer-col a{ display:block; color:var(--gray); font-size:14px; margin-bottom:12px; transition:color .2s; }
.footer-col a:hover{ color:var(--cyan); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:32px; border-top:1px solid var(--card-border); font-size:13px; color:var(--gray-dim); font-family:var(--font-mono); flex-wrap:wrap; gap:12px; }

/* ---------- Utility ---------- */
.mono{ font-family:var(--font-mono); }
.text-gray{ color:var(--gray); }
.mt-8{ margin-top:8px;} .mt-16{margin-top:16px;} .mt-24{margin-top:24px;} .mt-40{margin-top:40px;} .mt-56{margin-top:56px;}