/* ============================================================
   SPECTRA DEV — Design tokens & base
   ============================================================ */
:root{
  --bg:#0A0C12;
  --bg-elevated:#0F121A;
  --surface:#171B26;
  --surface-2:#1D2230;
  --border:#262B3A;
  --border-soft:#1C202C;

  --text:#F2F1F7;
  --text-muted:#9599AC;
  --text-faint:#5B5F72;

  --violet:#7C5CFF;
  --indigo:#5B6EF5;
  --cyan:#22D3EE;
  --teal:#2DD4BF;
  --success:#34D399;
  --warning:#FBBF24;

  --spectrum: linear-gradient(90deg,#7C5CFF 0%,#5B6EF5 35%,#22D3EE 70%,#2DD4BF 100%);

  --display:'Space Grotesk', sans-serif;
  --body:'Inter', -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
  --mono:'JetBrains Mono', 'Courier New', monospace;

  --radius-sm:6px;
  --radius:12px;
  --radius-lg:20px;

  --container:1140px;
}

*,*::before,*::after{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{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:'';
  position:fixed;
  inset:0;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(124,92,255,0.14), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(34,211,238,0.08), transparent 60%);
  pointer-events:none;
  z-index:0;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.15;margin:0;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px;}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--cyan);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:'';
  width:16px;height:2px;
  background:var(--spectrum);
  border-radius:2px;
}

.spectrum-rule{
  height:3px;
  width:56px;
  background:var(--spectrum);
  border-radius:3px;
  margin:18px 0 0;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-sm);
  font-family:var(--body);
  font-weight:600;
  font-size:14.5px;
  border:1px solid transparent;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn-primary{
  background:var(--spectrum);
  color:#080910;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px -8px rgba(124,92,255,0.55);}
.btn-ghost{
  background:transparent;
  border-color:var(--border);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--violet);background:rgba(124,92,255,0.08);}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,12,18,0.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border-soft);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;
}
.logo{display:flex;align-items:center;gap:10px;}
.logo-mark{
  width:32px;height:32px;border-radius:8px;
  background:var(--surface);
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  position:relative;
  overflow:hidden;
}
.logo-mark span{
  position:absolute;top:0;bottom:0;width:6px;
}
.logo-mark span:nth-child(1){left:5px;background:var(--violet);}
.logo-mark span:nth-child(2){left:12px;background:var(--indigo);}
.logo-mark span:nth-child(3){left:19px;background:var(--cyan);}
.logo-mark span:nth-child(4){left:26px;background:var(--teal);}
.logo-text{font-family:var(--display);font-weight:600;font-size:17px;letter-spacing:-0.01em;}
.logo-text .dim{color:var(--text-muted);font-weight:500;}

.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  padding:9px 16px;border-radius:8px;
  font-size:14.5px;font-weight:500;color:var(--text-muted);
  transition:color .15s ease, background .15s ease;
}
.nav-links a:hover{color:var(--text);background:var(--surface);}
.nav-links a.active{color:var(--text);background:var(--surface-2);}
.nav-cta{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  background:transparent;border:1px solid var(--border);
  width:40px;height:40px;border-radius:8px;
  color:var(--text);
  align-items:center;justify-content:center;
}

@media (max-width:860px){
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--bg-elevated);
    border-bottom:1px solid var(--border);
    padding:10px;
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 14px;}
  .nav-toggle{display:flex;}
  .nav-cta .btn-ghost{display:none;}
}

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--border-soft);
  padding:48px 0 32px;
  margin-top:120px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;
  padding-bottom:32px;
}
.footer-brand p{color:var(--text-muted);font-size:14.5px;margin-top:12px;max-width:32ch;}
.footer-col h4{font-size:13px;color:var(--text-faint);text-transform:uppercase;letter-spacing:0.08em;font-family:var(--mono);font-weight:500;margin-bottom:14px;}
.footer-col a, .footer-col p{display:block;color:var(--text-muted);font-size:14.5px;margin-bottom:10px;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  border-top:1px solid var(--border-soft);
  padding-top:24px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-faint);
}
@media (max-width:700px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:10px;align-items:flex-start;}
}

/* ---------- Section basics ---------- */
section{padding:96px 0;position:relative;z-index:1;}
.section-head{max-width:640px;margin-bottom:52px;}
.section-head h2{font-size:clamp(28px,4vw,38px);margin-top:14px;}
.section-head p{color:var(--text-muted);margin-top:14px;font-size:16.5px;}

/* ---------- Cards ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:border-color .2s ease, transform .2s ease;
}
.card:hover{border-color:rgba(124,92,255,0.4);}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}