/* ============================================================
   Tech Nipuna — Design System
   Aesthetic: soft naturalist-tech · warm ivory, sage, clay
   Type: Fraunces (display) · Hanken Grotesk (body)
   ============================================================ */

:root{
  /* Theme: Indigo & Sky
     (variable names kept; sage = primary indigo, clay = sky accent) */
  --bg:#F5F7FB;        /* cool white */
  --bg-2:#E9EEF7;      /* light indigo-gray */
  --paper:#FFFFFF;     /* card surface */
  --ink:#16203A;       /* deep indigo-navy ink */
  --ink-soft:#4C5872;  /* muted body */
  --ink-faint:#8590A6;

  --sage:#3A4FB8;      /* primary — indigo */
  --sage-deep:#2A3A92;
  --sage-pale:#E0E5F8;
  --clay:#3FA3E0;      /* accent — sky blue */
  --clay-soft:#A6D6F2;
  --clay-pale:#E2F1FB;
  --gold:#E8A93C;

  --line:#E3E8F2;
  --line-soft:#EEF2F9;

  --radius:18px;
  --radius-lg:28px;
  --shadow-sm:0 1px 2px rgba(22,32,58,.04), 0 4px 14px rgba(22,32,58,.05);
  --shadow:0 8px 30px rgba(42,58,146,.13), 0 2px 8px rgba(22,32,58,.05);
  --shadow-lg:0 30px 70px rgba(42,58,146,.18), 0 8px 24px rgba(22,32,58,.07);

  --font-display:"Fraunces", Georgia, serif;
  --font-body:"Hanken Grotesk", -apple-system, sans-serif;
  --maxw:1180px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* grain overlay for warmth */
body::before{
  content:""; position:fixed; inset:0; z-index:9999; pointer-events:none;
  opacity:.025; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1,h2,h3,h4{ font-family:var(--font-display); font-weight:560; line-height:1.08; letter-spacing:-.012em; color:var(--ink); margin:0; font-optical-sizing:auto; }
h1{ font-size:clamp(2.6rem,6vw,4.6rem); font-weight:540; }
h2{ font-size:clamp(2rem,3.6vw,3rem); }
h3{ font-size:1.4rem; }
p{ margin:0 0 1rem; color:var(--ink-soft); }
a{ color:inherit; text-decoration:none; }
.em{ font-style:italic; }
.serif{ font-family:var(--font-display); }

.container{ max-width:var(--maxw); margin:0 auto; padding:0 28px; }
.section{ padding:clamp(70px,9vw,130px) 0; position:relative; }
.center{ text-align:center; }
.lead{ font-size:1.22rem; color:var(--ink-soft); max-width:40ch; }
.muted{ color:var(--ink-faint); }

/* eyebrow / kicker */
.kicker{
  display:inline-flex; align-items:center; gap:9px;
  font-size:.72rem; font-weight:700; letter-spacing:.22em; text-transform:uppercase;
  color:var(--sage-deep);
}
.kicker::before{ content:""; width:26px; height:1.5px; background:var(--clay); display:inline-block; }
.kicker.c::before{ display:none; }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.55em;
  font-family:var(--font-body); font-weight:650; font-size:.98rem;
  padding:.82em 1.5em; border-radius:100px; cursor:pointer; border:1.5px solid transparent;
  transition:transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s, background .25s, color .25s;
  white-space:nowrap;
}
.btn-primary{ background:var(--sage-deep); color:#fdfbf6; box-shadow:var(--shadow-sm); }
.btn-primary:hover{ background:var(--ink); transform:translateY(-2px); box-shadow:var(--shadow); }
.btn-clay{ background:var(--clay); color:#fff; box-shadow:var(--shadow-sm); }
.btn-clay:hover{ transform:translateY(-2px); box-shadow:0 10px 28px rgba(216,137,107,.35); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--sage); color:var(--sage-deep); transform:translateY(-2px); }
.btn .arw{ transition:transform .25s; }
.btn:hover .arw{ transform:translateX(4px); }

/* ---------- nav ---------- */
.nav{
  position:sticky; top:0; z-index:100;
  backdrop-filter:saturate(140%) blur(14px);
  background:rgba(245,247,251,.74);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
.nav.scrolled{ border-color:var(--line); background:rgba(245,247,251,.92); }
.nav-inner{ max-width:var(--maxw); margin:0 auto; padding:16px 28px; display:flex; align-items:center; justify-content:space-between; }
.brand{ display:flex; align-items:center; gap:11px; font-family:var(--font-display); font-weight:600; font-size:1.28rem; letter-spacing:-.01em; }
.brand .logo{
  width:36px; height:36px; flex:none; display:block; border-radius:11px;
  filter:drop-shadow(0 4px 11px rgba(42,58,146,.30));
}
.brand small{ display:block; font-family:var(--font-body); font-size:.58rem; letter-spacing:.28em; text-transform:uppercase; color:var(--ink-faint); margin-top:-2px; font-weight:600; }
.nav-links{ display:flex; align-items:center; gap:6px; }
.nav-link{ padding:.5em .85em; border-radius:100px; font-size:.95rem; font-weight:550; color:var(--ink-soft); transition:color .2s, background .2s; }
.nav-link:hover{ color:var(--ink); background:var(--bg-2); }
.nav-link.active{ color:var(--sage-deep); }
.nav-cta{ margin-left:8px; }
.burger{ display:none; background:none; border:none; cursor:pointer; padding:8px; }
.burger span{ display:block; width:22px; height:2px; background:var(--ink); margin:4px 0; border-radius:2px; transition:.3s; }

/* ---------- hero ---------- */
.hero{ position:relative; padding:clamp(56px,8vw,108px) 0 clamp(60px,8vw,100px); overflow:hidden; }
.blob{ position:absolute; border-radius:50%; filter:blur(70px); opacity:.5; z-index:0; pointer-events:none; }
.blob.b1{ width:520px; height:520px; background:var(--sage-pale); top:-160px; right:-120px; }
.blob.b2{ width:420px; height:420px; background:var(--clay-pale); bottom:-160px; left:-120px; opacity:.55; }
.hero-grid{ position:relative; z-index:2; display:grid; grid-template-columns:1.15fr .85fr; gap:54px; align-items:center; }
.hero h1 .accent{ font-style:italic; color:var(--sage-deep); }
.hero h1 .clay{ color:var(--clay); }
.hero .lead{ margin-top:22px; max-width:46ch; font-size:1.2rem; }
.hero-cta{ display:flex; gap:14px; margin-top:32px; flex-wrap:wrap; }
.hero-note{ margin-top:22px; font-size:.9rem; color:var(--ink-faint); display:flex; align-items:center; gap:8px; }
.hero-note .dot{ width:7px; height:7px; border-radius:50%; background:var(--clay); box-shadow:0 0 0 4px var(--clay-pale); }

/* hero visual card — the evolving app */
.evolve{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-lg); padding:26px; box-shadow:var(--shadow-lg); position:relative; }
.evolve .ehead{ display:flex; align-items:center; gap:8px; margin-bottom:18px; }
.evolve .ehead .d{ width:11px; height:11px; border-radius:50%; }
.evolve .ehead .t{ margin-left:8px; font-size:.78rem; color:var(--ink-faint); font-weight:600; letter-spacing:.04em; }
.evolve .erow{ display:flex; align-items:center; justify-content:space-between; padding:11px 0; border-bottom:1px dashed var(--line-soft); }
.evolve .erow:last-child{ border-bottom:none; }
.evolve .ewk{ font-size:.72rem; font-weight:700; color:var(--clay); letter-spacing:.06em; width:62px; }
.evolve .egain{ font-family:var(--font-display); font-weight:540; font-size:1rem; color:var(--ink); flex:1; }
.evolve .elearn{ font-size:.8rem; color:var(--ink-faint); }

/* ---------- cards / grids ---------- */
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:22px; }
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.grid-4{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--radius);
  padding:30px 28px; box-shadow:var(--shadow-sm); transition:transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s, border-color .3s;
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow); border-color:var(--sage-pale); }
.card .ic{ width:48px; height:48px; border-radius:14px; display:grid; place-items:center; margin-bottom:18px; font-size:1.3rem;
  background:var(--sage-pale); color:var(--sage-deep); }
.card .ic.clay{ background:var(--clay-pale); color:var(--clay); }
.card h3{ font-size:1.25rem; margin-bottom:8px; }
.card p{ font-size:.97rem; margin:0; }
.card .nn{ font-family:var(--font-display); font-size:.95rem; color:var(--clay); font-weight:600; }

/* feature strip */
.strip{ background:var(--bg-2); border-block:1px solid var(--line); }

/* the loop */
.loop{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; margin-top:18px; }
.loopstep{ position:relative; background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:26px 22px; }
.loopstep .ln{ font-family:var(--font-display); font-size:2.2rem; color:var(--sage-pale); font-weight:600; line-height:1; }
.loopstep h4{ font-size:1.2rem; margin:6px 0 8px; }
.loopstep p{ font-size:.92rem; margin:0; }
.loopstep:not(:last-child)::after{
  content:"→"; position:absolute; right:-22px; top:50%; transform:translateY(-50%);
  color:var(--clay); font-size:1.2rem; z-index:3;
}

/* arcs timeline */
.arc{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-lg); padding:32px 34px; box-shadow:var(--shadow-sm); }
.arc + .arc{ margin-top:22px; }
.arc-head{ display:flex; align-items:baseline; gap:16px; flex-wrap:wrap; margin-bottom:14px; }
.arc-badge{ font-size:.72rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:#fff; background:var(--sage-deep); padding:6px 13px; border-radius:100px; }
.arc-badge.b2{ background:var(--clay); }
.arc-badge.b3{ background:var(--gold); }
.arc-wk{ font-size:.85rem; color:var(--ink-faint); font-weight:600; }
.arc h3{ font-size:1.5rem; }
.tagrow{ display:flex; flex-wrap:wrap; gap:8px; margin-top:16px; }
.tag{ font-size:.82rem; font-weight:550; color:var(--sage-deep); background:var(--sage-pale); padding:5px 12px; border-radius:100px; }
.tag.c{ color:var(--clay); background:var(--clay-pale); }

/* big quote / promise */
.promise{ background:linear-gradient(135deg,var(--sage-deep),var(--ink)); color:#f3efe6; border-radius:var(--radius-lg); padding:clamp(40px,6vw,72px); position:relative; overflow:hidden; }
.promise::after{ content:""; position:absolute; width:300px; height:300px; border-radius:50%; background:rgba(216,137,107,.22); filter:blur(60px); top:-80px; right:-60px; }
.promise .kicker{ color:var(--clay-soft); }
.promise h2{ color:#fdfbf6; max-width:20ch; position:relative; }
.promise h2 em{ color:var(--clay-soft); font-style:italic; }

/* stat row */
.stats{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.stat{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:30px; border-top:3px solid var(--sage); }
.stat .big{ font-family:var(--font-display); font-size:2.8rem; font-weight:600; color:var(--sage-deep); line-height:1; }
.stat p{ font-size:.94rem; margin:12px 0 0; }

/* compare table */
.compare{ width:100%; border-collapse:separate; border-spacing:0; background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); }
.compare th, .compare td{ padding:16px 20px; text-align:left; border-bottom:1px solid var(--line-soft); font-size:.96rem; }
.compare thead th{ background:var(--bg-2); font-family:var(--font-body); font-weight:700; font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-soft); }
.compare .us{ color:var(--sage-deep); font-weight:600; }
.compare tr:last-child td{ border-bottom:none; }
.compare .rowh{ font-weight:650; color:var(--ink); }

/* footer */
.footer{ background:var(--ink); color:#cdd4ce; padding:72px 0 32px; }
.footer .container{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:36px; }
.footer h5{ font-family:var(--font-body); font-size:.74rem; letter-spacing:.18em; text-transform:uppercase; color:var(--clay-soft); margin:0 0 16px; }
.footer a{ display:block; color:#aeb6af; padding:5px 0; font-size:.95rem; transition:color .2s; }
.footer a:hover{ color:#fff; }
.footer .brand{ color:#fdfbf6; }
.footer .brand small{ color:#8a948c; }
.footer p{ color:#9aa39c; font-size:.93rem; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.09); margin-top:44px; padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:.85rem; color:#79827b; }

/* CTA band */
.ctaband{ text-align:center; }
.ctaband .btn{ margin:6px; }

/* page header (interior pages) */
.pagehead{ padding:clamp(60px,8vw,110px) 0 clamp(30px,4vw,50px); position:relative; overflow:hidden; }
.pagehead .lead{ margin-top:18px; max-width:54ch; }

/* list with check */
.checks{ list-style:none; padding:0; margin:16px 0 0; }
.checks li{ position:relative; padding:10px 0 10px 34px; border-bottom:1px solid var(--line-soft); color:var(--ink-soft); font-size:1rem; }
.checks li::before{ content:"✓"; position:absolute; left:0; top:11px; width:20px; height:20px; border-radius:50%; background:var(--sage-pale); color:var(--sage-deep); font-size:.72rem; display:grid; place-items:center; font-weight:700; }

/* form */
.form{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius-lg); padding:clamp(28px,4vw,44px); box-shadow:var(--shadow); }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:.82rem; font-weight:650; letter-spacing:.04em; color:var(--ink); margin-bottom:7px; }
.field input, .field select, .field textarea{
  width:100%; padding:13px 15px; border:1.5px solid var(--line); border-radius:12px;
  background:var(--bg); font-family:var(--font-body); font-size:1rem; color:var(--ink); transition:border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color:var(--sage); box-shadow:0 0 0 4px var(--sage-pale); }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }

/* reveal animation */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in{ opacity:1; transform:none; }
.reveal.d1{ transition-delay:.08s; } .reveal.d2{ transition-delay:.16s; }
.reveal.d3{ transition-delay:.24s; } .reveal.d4{ transition-delay:.32s; }

/* hero load animation */
@keyframes floatUp{ from{ opacity:0; transform:translateY(26px); } to{ opacity:1; transform:none; } }
.fu{ animation:floatUp .9s cubic-bezier(.2,.8,.2,1) both; }
.fu.s1{ animation-delay:.05s; } .fu.s2{ animation-delay:.18s; } .fu.s3{ animation-delay:.31s; }
.fu.s4{ animation-delay:.44s; } .fu.s5{ animation-delay:.57s; }

/* responsive */
@media (max-width:980px){
  .hero-grid{ grid-template-columns:1fr; gap:38px; }
  .grid-4{ grid-template-columns:repeat(2,1fr); }
  .loop{ grid-template-columns:repeat(2,1fr); }
  .loopstep:nth-child(2)::after{ display:none; }
  .footer .container{ grid-template-columns:1fr 1fr; }
}
@media (max-width:760px){
  .nav-links{
    position:fixed; inset:64px 0 auto 0; flex-direction:column; align-items:stretch; gap:2px;
    background:var(--bg); border-bottom:1px solid var(--line); padding:16px 20px 24px;
    transform:translateY(-12px); opacity:0; pointer-events:none; transition:.3s;
  }
  .nav-links.open{ transform:none; opacity:1; pointer-events:auto; }
  .nav-link{ padding:.8em 1em; }
  .nav-cta{ margin:8px 0 0; }
  .burger{ display:block; }
  .grid-2,.grid-3,.grid-4,.stats,.loop{ grid-template-columns:1fr; }
  .loopstep::after{ display:none !important; }
  .field-row{ grid-template-columns:1fr; }
  .footer .container{ grid-template-columns:1fr 1fr; gap:24px; }
}