/* ============================================================
   i4 Insights — Design Tokens
   Display: Space Grotesk · Body: Inter · Data/Labels: JetBrains Mono
   ============================================================ */

:root{
  --ink:        #0B1220;
  --ink-soft:   #1B2435;
  --paper:      #F6F7F9;
  --panel:      #FFFFFF;
  --teal:       #14B8A6;
  --teal-dim:   #0E8C82;
  --amber:      #F59E0B;
  --slate:      #51607A;
  --slate-soft: #8993A8;
  --line:       #E1E5EC;
  --line-dark:  #2A3550;

  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --max-w: 1180px;
  --radius: 2px;
}

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

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

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

.wrap{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 28px;
}

/* ---------- Typography ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  letter-spacing:-0.01em;
  margin:0;
  color:var(--ink);
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--teal-dim);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:18px; height:1px;
  background:var(--teal);
  display:inline-block;
}

.lede{
  font-size:1.15rem;
  color:var(--slate);
  max-width:640px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:13.5px;
  letter-spacing:0.04em;
  text-transform:uppercase;
  padding:14px 22px;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn-primary{
  background:var(--ink);
  color:var(--paper);
}
.btn-primary:hover{ background:var(--teal-dim); color:#fff; }
.btn-ghost{
  background:transparent;
  border-color:var(--line-dark);
  color:var(--ink);
}
.btn-ghost:hover{ border-color:var(--ink); }

.btn-row{ display:flex; gap:14px; flex-wrap:wrap; margin-top:34px; }

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(246,247,249,0.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  min-height:64px;
}
.brand{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.2rem;
  letter-spacing:-0.01em;
  display:flex; align-items:center; gap:6px;
  flex-shrink:0;
}
.brand img{
  height:30px;
  max-height:30px;
  width:auto;
  display:block;
}
.brand .mark{ color:var(--teal-dim); }

.nav-links{
  display:flex; align-items:center; gap:34px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.03em;
}
.nav-links a{
  color:var(--slate);
  transition:color .15s ease;
  position:relative;
}
.nav-links a:hover{ color:var(--ink); }
.nav-cta{
  background:var(--ink); color:#fff !important;
  padding:11px 18px;
  border-radius:var(--radius);
  text-transform:uppercase;
  font-weight:600;
  white-space:nowrap;
  letter-spacing:0.05em;
}
.nav-cta:hover{ background:var(--teal-dim); color:#fff !important; }

.nav-toggle{
  display:none;
  flex-direction:column; gap:5px;
  background:none; border:none; cursor:pointer; padding:6px;
}
.nav-toggle span{ width:22px; height:2px; background:var(--ink); display:block; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:108px 0 90px;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr 0.85fr;
  gap:40px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2.6rem, 5.2vw, 4.4rem);
  line-height:1.04;
}
.hero h1 .accent{ color:var(--teal-dim); }
.hero .lede{ margin-top:22px; font-size:1.2rem; }

.hero-stage{
  position:relative;
  aspect-ratio:1/1;
  max-height:420px;
}
#nodeCanvas{
  width:100%; height:100%;
  display:block;
}

.hero-foot{
  margin-top:64px;
  display:flex;
  gap:46px;
  flex-wrap:wrap;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--slate-soft);
  letter-spacing:0.02em;
  border-top:1px solid var(--line);
  padding-top:22px;
}
.hero-foot strong{ color:var(--ink); font-size:15px; display:block; font-family:var(--font-display); margin-bottom:4px; }

/* ---------- Section shells ---------- */
section{ padding:96px 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end;
  gap:30px; margin-bottom:54px;
  border-bottom:1px solid var(--line);
  padding-bottom:30px;
}
.section-head h2{ font-size:clamp(1.8rem, 3vw, 2.5rem); max-width:600px; }
.section-head .lede{ margin-top:14px; }
.section-head .tag{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--slate-soft);
  white-space:nowrap;
}

.alt{ background:var(--ink); color:var(--paper); }
.alt .eyebrow{ color:var(--teal); }
.alt h2,.alt h3,.alt h4{ color:#fff; }
.alt .lede{ color:#AEB7CC; }
.alt .section-head{ border-color:var(--line-dark); }
.alt .tag{ color:#6C7790; }

/* ---------- Philosophy ---------- */
.philosophy-grid{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:60px;
}
.phil-col h3{
  font-size:1.5rem;
  margin-bottom:22px;
}
.phil-list{ list-style:none; padding:0; margin:0; }
.phil-list li{
  display:flex; align-items:baseline; gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--line-dark);
  font-family:var(--font-mono);
  font-size:14.5px;
}
.phil-list li:last-child{ border-bottom:none; }
.phil-list .n{ color:var(--teal); }

.data-points{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.data-point{
  border:1px solid var(--line-dark);
  padding:20px;
  border-radius:var(--radius);
}
.data-point .k{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--teal);
  display:block;
  margin-bottom:8px;
}
.data-point p{ margin:0; color:#C7CEDD; font-size:14.5px; }

.equation{
  margin-top:48px;
  font-family:var(--font-mono);
  font-size:15px;
  color:#AEB7CC;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.equation b{ color:#fff; font-weight:600; }
.equation .arrow{ color:var(--teal); }

/* ---------- Capability ledger (services) ---------- */
.ledger{
  border-top:1px solid var(--line);
}
.ledger-row{
  display:grid;
  grid-template-columns:90px 1fr 1.3fr;
  gap:32px;
  padding:34px 0;
  border-bottom:1px solid var(--line);
  align-items:start;
}
.ledger-row .id{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--slate-soft);
  letter-spacing:0.05em;
  padding-top:6px;
}
.ledger-row h3{
  font-size:1.35rem;
}
.ledger-row .sub{
  font-family:var(--font-mono);
  font-size:11.5px;
  text-transform:uppercase;
  letter-spacing:0.06em;
  color:var(--teal-dim);
  margin-top:8px;
  display:block;
}
.ledger-row .desc p{ margin:0 0 14px; color:var(--slate); }
.tag-list{
  display:flex; flex-wrap:wrap; gap:8px;
  margin-top:14px;
}
.tag-list span{
  font-family:var(--font-mono);
  font-size:11.5px;
  border:1px solid var(--line);
  padding:5px 10px;
  border-radius:var(--radius);
  color:var(--slate);
}

/* ---------- Process ---------- */
.process-rail{
  display:grid;
  grid-template-columns:repeat(7,1fr);
  gap:0;
  position:relative;
  margin-top:10px;
}
.process-rail::before{
  content:"";
  position:absolute;
  top:11px; left:0; right:0;
  height:1px;
  background:var(--line-dark);
}
.proc-step{
  position:relative;
  padding-top:34px;
  text-align:left;
}
.proc-step::before{
  content:"";
  position:absolute;
  top:5px; left:0;
  width:13px; height:13px;
  border-radius:50%;
  background:var(--ink);
  border:2px solid var(--teal);
}
.proc-step .pn{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--teal);
  display:block;
  margin-bottom:6px;
}
.proc-step h4{ font-size:1rem; color:#fff; margin-bottom:6px; }
.proc-step p{ font-size:13px; color:#9AA4BC; margin:0; }

/* ---------- Why / pillars ---------- */
.pillars{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.pillar{
  background:var(--panel);
  padding:34px 26px;
}
.pillar .pk{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--teal-dim);
  letter-spacing:0.05em;
  text-transform:uppercase;
  display:block;
  margin-bottom:14px;
}
.pillar h3{ font-size:1.15rem; margin-bottom:10px; }
.pillar p{ color:var(--slate); font-size:14px; margin:0; }

/* ---------- Industries ---------- */
.industry-strip{
  display:flex; flex-wrap:wrap;
  gap:0;
  border-top:1px solid var(--line);
  border-left:1px solid var(--line);
}
.industry-strip span{
  font-family:var(--font-mono);
  font-size:13px;
  padding:16px 22px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  color:var(--slate);
  flex:1 1 auto;
  text-align:center;
  white-space:nowrap;
}

/* ---------- Products ---------- */
.product-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.product-card{
  border:1px solid var(--line);
  padding:26px 22px;
  border-radius:var(--radius);
  background:var(--panel);
  transition:border-color .2s ease, transform .2s ease;
}
.product-card:hover{ border-color:var(--teal-dim); transform:translateY(-3px); }
.product-card .pid{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--slate-soft);
  display:block; margin-bottom:14px;
}
.product-card h3{ font-size:1.1rem; margin-bottom:8px; }
.product-card p{ font-size:13.5px; color:var(--slate); margin:0; }
.product-card.soon{
  background:transparent;
  border-style:dashed;
}
.product-card.soon h3{ color:var(--slate-soft); }

.soon-list{
  margin-top:40px;
  display:flex; flex-wrap:wrap; gap:12px;
}
.soon-list span{
  font-family:var(--font-mono);
  font-size:12px;
  border:1px dashed var(--line);
  padding:8px 14px;
  border-radius:var(--radius);
  color:var(--slate-soft);
}

/* ---------- CTA band ---------- */
.cta-band{
  padding:90px 0;
  text-align:center;
  border-top:1px solid var(--line-dark);
}
.cta-band h2{
  font-size:clamp(2rem,4vw,3rem);
  max-width:720px;
  margin:0 auto 18px;
}
.cta-band .lede{ margin:0 auto; text-align:center; }
.cta-band .btn-row{ justify-content:center; }

/* ---------- Contact ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
}
.contact-list{ list-style:none; margin:0; padding:0; }
.contact-list li{
  padding:22px 0;
  border-bottom:1px solid var(--line);
  display:flex; flex-direction:column; gap:4px;
}
.contact-list .k{
  font-family:var(--font-mono);
  font-size:11.5px;
  text-transform:uppercase;
  letter-spacing:0.06em;
  color:var(--slate-soft);
}
.contact-list a{ font-size:1.1rem; font-family:var(--font-display); }
.contact-list a:hover{ color:var(--teal-dim); }

.form{ display:flex; flex-direction:column; gap:18px; }
.field{ display:flex; flex-direction:column; gap:8px; }
.field label{
  font-family:var(--font-mono);
  font-size:11.5px;
  text-transform:uppercase;
  letter-spacing:0.06em;
  color:var(--slate);
}
.field input,.field textarea{
  font-family:var(--font-body);
  font-size:15px;
  padding:13px 14px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel);
  color:var(--ink);
  resize:vertical;
}
.field input:focus,.field textarea:focus{
  outline:2px solid var(--teal-dim);
  outline-offset:1px;
}
.form button{ align-self:flex-start; border:none; }
.form-note{ font-size:12.5px; color:var(--slate-soft); margin-top:-6px; }

/* ---------- Floating WhatsApp button ---------- */
.wa-float{
  position:fixed !important;
  left:20px; bottom:24px;        /* bottom-LEFT — clear of any right-side AI widget */
  right:auto; top:auto;
  width:50px; height:50px;
  border-radius:50%;
  background:#25D366;
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 6px 18px rgba(37,211,102,0.4);
  z-index:999;
  transition:transform .15s ease, box-shadow .2s ease;
}
.wa-float svg{ display:block; }
.wa-float:hover{ transform:translateY(-2px) scale(1.04); box-shadow:0 10px 26px rgba(37,211,102,0.5); }

/* ---------- Live demo badge (inside capability ledger) ---------- */
.live-demo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--teal-dim);
  border:1px solid var(--teal-dim);
  padding:9px 14px;
  border-radius:var(--radius);
  transition:background .2s ease, color .2s ease;
}
.live-demo:hover{ background:var(--teal-dim); color:#fff; }
.live-demo .dot{
  width:7px; height:7px;
  border-radius:50%;
  background:#25D366;
  display:inline-block;
  box-shadow:0 0 0 0 rgba(37,211,102,0.6);
  animation:pulseDot 1.8s infinite;
}
@keyframes pulseDot{
  0%{ box-shadow:0 0 0 0 rgba(37,211,102,0.5); }
  70%{ box-shadow:0 0 0 7px rgba(37,211,102,0); }
  100%{ box-shadow:0 0 0 0 rgba(37,211,102,0); }
}

/* ---------- Footer ---------- */
footer{
  border-top:1px solid var(--line);
  padding:40px 0;
}
.footer-row{
  display:flex; justify-content:space-between; align-items:center;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--slate-soft);
  flex-wrap:wrap; gap:14px;
}

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

/* ---------- Responsive ---------- */

/* Global overflow guard — must come before breakpoints */
html, body{ overflow-x:hidden; max-width:100%; }

@media (max-width:980px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-stage{ max-height:260px; order:-1; }
  .philosophy-grid{ grid-template-columns:1fr; }
  .data-points{ grid-template-columns:1fr 1fr; }
  .pillars{ grid-template-columns:1fr 1fr; }
  .product-grid{ grid-template-columns:1fr 1fr; }
  .process-rail{ grid-template-columns:repeat(4,1fr); row-gap:30px; }
  .process-rail::before{ display:none; }
  .contact-grid{ grid-template-columns:1fr; }
  .ledger-row{ grid-template-columns:1fr; gap:10px; }
  .ledger-row .id{ padding-top:0; }
  .hero-foot{ gap:24px; }
}

@media (max-width:680px){
  .wrap{ padding:0 18px; }           /* tighter side padding on small screens */

  .nav-links{
    position:fixed; inset:64px 0 0 0;
    background:var(--paper);
    flex-direction:column;
    align-items:flex-start;
    padding:30px 24px;
    gap:24px;
    transform:translateX(100%);
    transition:transform .25s ease;
    overflow-y:auto;
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-toggle{ display:flex; }

  .industry-strip span{ flex:1 1 45%; }
  .pillars{ grid-template-columns:1fr; }
  .product-grid{ grid-template-columns:1fr; }
  .process-rail{ grid-template-columns:repeat(2,1fr); row-gap:28px; }
  section{ padding:56px 0; }
  .hero{ padding:72px 0 52px; }

  /* Hero foot: stack vertically on very small screens */
  .hero-foot{ flex-direction:column; gap:16px; }

  /* Ledger tag lists wrap tightly */
  .tag-list{ gap:6px; }
  .tag-list span{ font-size:11px; padding:4px 8px; }

  /* Live demo badge: allow wrapping */
  .live-demo{ flex-wrap:wrap; font-size:11.5px; }

  /* CTA band */
  .cta-band{ padding:64px 0; }
  .btn-row{ flex-direction:column; align-items:flex-start; }
  .cta-band .btn-row{ align-items:center; }

  /* Section head: stack vertically */
  .section-head{ flex-direction:column; align-items:flex-start; gap:12px; }
  .section-head .tag{ display:none; }   /* hide decorative tag on tiny screens */

  /* Philosophy equation: wrap */
  .equation{ flex-direction:column; gap:8px; font-size:13px; }

  /* Data points: single column */
  .data-points{ grid-template-columns:1fr; }

  /* Process rail: single column on very small */
  .process-rail{ grid-template-columns:1fr 1fr; }

  /* Footer */
  .footer-row{ flex-direction:column; align-items:flex-start; gap:6px; font-size:11.5px; }

  /* WhatsApp float: slightly smaller on mobile */
  .wa-float{ width:44px; height:44px; left:16px; bottom:20px; }
}