/* ============================================================
   SpiveyLabs — styles.css
   Monochrome. JetBrains Mono. Sharp. "A well-typeset terminal."
   Tokens + base + primitives + nav + hero (Task 2).
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --ink:#0A0A0A;
  --paper:#FFFFFF;
  --paper-sub:#F4F4F2;
  --ink-70:rgba(10,10,10,.70);
  --ink-50:rgba(10,10,10,.50);
  --ink-40:rgba(10,10,10,.40);
  --ink-16:rgba(10,10,10,.16);
  --ink-10:rgba(10,10,10,.10);
  --paper-70:rgba(255,255,255,.70);
  --paper-40:rgba(255,255,255,.40);
  --paper-16:rgba(255,255,255,.16);
  --shadow-card:0 2px 18px rgba(0,0,0,.06);
  --shadow-lift:0 6px 22px rgba(0,0,0,.10);
  --maxw:1180px;
  --gutter:56px;
  --nav-h:76px;
}

/* ---------- Fonts ---------- */
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('assets/fonts/jetbrains-mono-400.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url('assets/fonts/jetbrains-mono-500.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:600;font-display:swap;src:url('assets/fonts/jetbrains-mono-600.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:700;font-display:swap;src:url('assets/fonts/jetbrains-mono-700.woff2') format('woff2');}

/* ---------- Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box;border-radius:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 14px);}
body{
  margin:0;
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  background:var(--paper-sub);
  color:var(--ink);
  line-height:1.62;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3{margin:0;font-weight:600;}
p{margin:0;}
a{color:inherit;}
img,svg{display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--ink);color:var(--paper);}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}

/* ---------- Layout primitives ---------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);width:100%;}
.section{padding:clamp(76px,10vh,116px) 0;}
.lede{font-size:clamp(17px,2.1vw,20px);color:var(--ink-70);max-width:62ch;line-height:1.58;text-wrap:pretty;}
.h2{text-wrap:balance;}

/* ---------- Eyebrow ---------- */
.eyebrow{
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(10,10,10,.58);
  margin:0 0 18px;
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{
  content:"";
  width:9px;height:9px;
  background:var(--ink);
  transform:rotate(45deg);
  flex:none;
  opacity:.85;
}

/* ---------- Headings scale ---------- */
.h2{font-size:clamp(26px,3.4vw,34px);letter-spacing:-.04em;line-height:1.12;}
.h3{font-size:20px;letter-spacing:-.03em;line-height:1.25;}

/* ---------- Buttons ---------- */
.btn{
  font-family:inherit;font-weight:600;font-size:14px;letter-spacing:-.01em;
  color:var(--paper);background:var(--ink);
  border:none;padding:15px 24px;
  display:inline-flex;align-items:center;gap:9px;
  text-decoration:none;cursor:pointer;
  transition:background 200ms cubic-bezier(.2,0,0,1),transform 200ms cubic-bezier(.2,0,0,1);
}
.btn:hover{background:#1d1d1d;}
.btn:active{background:#000;transform:translateY(1px);}
.btn-ghost{
  font-family:inherit;font-weight:600;font-size:14px;letter-spacing:-.01em;
  color:var(--ink);background:transparent;
  border:1px solid var(--ink-16);padding:14px 23px;
  display:inline-flex;align-items:center;gap:9px;
  text-decoration:none;cursor:pointer;
  transition:border-color 200ms cubic-bezier(.2,0,0,1);
}
.btn-ghost:hover{border-color:var(--ink);}
/* inverted button for the dark CTA band */
.btn-on-dark{background:var(--paper);color:var(--ink);}
.btn-on-dark:hover{background:#e9e9e6;}

/* ---------- Status pill (the only rounded element) ---------- */
.pill{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;font-weight:500;letter-spacing:.04em;
  color:var(--ink-70);border:1px solid var(--ink-16);
  border-radius:999px;padding:5px 13px;text-transform:uppercase;
}
.pill-live::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--ink);flex:none;
  animation:pulse 2.4s cubic-bezier(.2,0,0,1) infinite;
}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
@media (prefers-reduced-motion:reduce){.pill-live::before{animation:none;}}

/* ---------- Constellation rule (signature divider) ---------- */
.rule{height:1px;background:var(--ink-10);display:flex;align-items:center;position:relative;margin:0;}
.rule::before,.rule::after{content:"";width:5px;height:5px;background:var(--ink);position:absolute;top:50%;transform:translateY(-50%);}
.rule::before{left:-2px;}
.rule::after{right:-2px;}

/* ---------- Scroll reveal ----------
   Content is visible by DEFAULT. The hidden state applies only when JS is on
   (html.js, set pre-paint) AND motion is allowed. No-JS / headless / reduced
   motion all render fully visible, so nothing ever "ships blank". */
@media (prefers-reduced-motion:no-preference){
  .js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.2,0,0,1),transform .5s cubic-bezier(.2,0,0,1);}
  .js .reveal.in{opacity:1;transform:none;}
}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  height:var(--nav-h);
  background:rgba(244,244,242,.82);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--ink-10);
}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px;}
.nav-logo{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);}
.brand-mark{flex:none;height:26px;width:26px;}
.brand-word{font-weight:600;font-size:21px;letter-spacing:-.055em;line-height:1;}
.brand-word .b2{font-weight:400;}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a:not(.btn){
  text-decoration:none;font-size:13.5px;font-weight:500;color:var(--ink-70);
  letter-spacing:-.01em;transition:color 160ms;
}
.nav-links a:not(.btn):hover{color:var(--ink);}
.nav-links .btn{padding:11px 18px;}
.nav-burger{
  display:none;background:transparent;border:1px solid var(--ink-16);
  color:var(--ink);font-family:inherit;font-weight:600;font-size:15px;
  padding:8px 12px;cursor:pointer;line-height:1;
}
.nav-burger:hover{border-color:var(--ink);}

/* spacer so fixed nav doesn't cover content */
.page{padding-top:var(--nav-h);}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;padding:clamp(104px,13vh,168px) 0 clamp(72px,10vh,120px);overflow:hidden;}
.hero .container{position:relative;z-index:1;}
.hero-h1{
  font-size:clamp(40px,6.4vw,72px);
  font-weight:600;
  letter-spacing:-.05em;
  line-height:1.02;
  max-width:16ch;
  margin:0 0 26px;
}
.hero-sub{
  font-size:clamp(16px,2vw,19px);
  color:var(--ink-70);
  max-width:60ch;
  line-height:1.6;
  margin:0 0 36px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-pill{margin:28px 0 0;}

/* bracket motif: oversized, quiet, framing the hero's right edge */
.hero-bracket{
  position:absolute;top:50%;right:-64px;
  transform:translateY(-50%);
  height:min(84vh,640px);width:auto;
  color:var(--ink);opacity:.06;pointer-events:none;z-index:0;
}

/* ============================================================
   RESPONSIVE (nav + hero; sections add their own)
   ============================================================ */
@media (max-width:860px){
  :root{--gutter:32px;}
}
@media (max-width:720px){
  .nav-burger{display:inline-block;}
  .nav-links{
    position:absolute;top:var(--nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--ink-10);
    padding:8px 0;
    display:none;
  }
  body.nav-open .nav-links{display:flex;}
  .nav-links a:not(.btn){padding:14px var(--gutter);border-top:1px solid var(--ink-10);}
  .nav-links .btn{margin:10px var(--gutter);justify-content:center;}
  .hero-bracket{display:none;}
}
@media (max-width:480px){
  .hero-cta .btn,.hero-cta .btn-ghost{width:100%;justify-content:center;}
}

/* ============================================================
   SECTION RHYTHM (alternating bands)
   ============================================================ */
.section-pain{background:var(--paper);}
.section-do{background:var(--paper-sub);}

/* ---------- Asymmetric split (heading left, content right) ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,88px);align-items:start;}
.split-head .h2{margin-top:14px;max-width:14ch;}

/* ---------- Pain list ---------- */
.pain-list{display:flex;flex-direction:column;}
.pain-item{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;padding:24px 0;border-top:1px solid var(--ink-10);}
.pain-item:first-child{border-top:none;padding-top:6px;}
.pain-item:last-child{padding-bottom:0;}
.pain-mark{width:9px;height:9px;background:var(--ink);transform:rotate(45deg);margin-top:11px;flex:none;}
.pain-item p{font-size:clamp(17px,2vw,21px);line-height:1.5;color:var(--ink);letter-spacing:-.01em;}

/* ---------- What we do ---------- */
.do-head{max-width:62ch;}
.do-head .h2{margin-top:14px;}
.do-head .lede{margin-top:20px;}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:clamp(40px,5vw,60px);}
.card{background:var(--paper);box-shadow:var(--shadow-card);padding:30px 28px 32px;display:flex;flex-direction:column;transition:box-shadow 240ms cubic-bezier(.2,0,0,1),transform 240ms cubic-bezier(.2,0,0,1);}
.card:hover{box-shadow:var(--shadow-lift);transform:translateY(-3px);}
.cardmark{width:34px;height:34px;color:var(--ink);margin-bottom:22px;}
.card .h3{margin-bottom:12px;}
.card p{color:var(--ink-70);font-size:15px;line-height:1.55;}

/* ---------- Responsive: sections ---------- */
@media (max-width:820px){
  .split{grid-template-columns:1fr;gap:28px;}
  .split-head .h2{max-width:18ch;}
  .cards{grid-template-columns:1fr;gap:16px;}
}

/* ============================================================
   HOW IT WORKS (pipeline)
   ============================================================ */
.section-how{background:var(--paper);}
.how-head{max-width:60ch;margin-bottom:clamp(44px,6vw,68px);}
.how-head .h2{margin-top:14px;}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0 clamp(28px,4vw,52px);position:relative;}
.steps::before{content:"";position:absolute;top:5px;left:0;right:0;height:1px;background:var(--ink-10);}
.step{position:relative;padding-top:30px;align-self:start;}
.step-node{position:absolute;top:0;left:0;width:11px;height:11px;background:var(--ink);transform:rotate(45deg);}
.step-num{display:block;font-size:12px;font-weight:600;letter-spacing:.1em;color:rgba(10,10,10,.58);margin-bottom:14px;}
.step .h3{margin-bottom:12px;}
.step > p{color:var(--ink-70);font-size:15px;line-height:1.58;max-width:34ch;}
.guarantee{margin-top:20px;background:var(--paper-sub);padding:16px 18px;border:1px solid var(--ink-10);}
.guarantee-label{display:block;font-size:10px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:rgba(10,10,10,.58);margin-bottom:8px;}
.guarantee p{font-size:13.5px;line-height:1.5;color:var(--ink);max-width:none;}

/* ============================================================
   PROOF (case dossiers)
   ============================================================ */
.section-proof{background:var(--paper-sub);}
.proof-head{max-width:60ch;margin-bottom:clamp(40px,5vw,60px);}
.proof-head .h2{margin-top:14px;}
.proof{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(28px,5vw,72px);align-items:start;}
.proof-meta .pill{margin-bottom:26px;}
.proof-stat{display:block;}
.proof-stat-num{display:block;font-size:clamp(40px,6vw,62px);font-weight:600;letter-spacing:-.045em;line-height:.96;}
.proof-stat-unit{display:block;color:var(--ink-70);font-size:13.5px;line-height:1.45;margin-top:12px;max-width:20ch;}
.proof-h{font-size:clamp(20px,2.6vw,26px);letter-spacing:-.03em;line-height:1.22;margin-bottom:18px;max-width:30ch;}
.proof-body p{color:var(--ink-70);line-height:1.62;max-width:64ch;}
.proof-body p + p{margin-top:14px;}
.proof-divider{margin:clamp(40px,5vw,60px) 0;}

@media (max-width:820px){
  .steps{grid-template-columns:1fr;gap:0;}
  .steps::before{display:none;}
  .step{padding-top:26px;padding-left:26px;border-left:1px solid var(--ink-10);}
  .step + .step{margin-top:34px;}
  .step-node{left:-6px;top:4px;}
  .step > p{max-width:none;}
  .proof{grid-template-columns:1fr;gap:22px;}
  .proof-meta{display:flex;align-items:center;gap:22px;}
  .proof-meta .pill{margin-bottom:0;}
  .proof-stat-num{font-size:40px;}
  .proof-stat-unit{margin-top:4px;}
}
@media (max-width:480px){
  .proof-meta{flex-direction:column;align-items:flex-start;gap:14px;}
}

/* ============================================================
   ABOUT
   ============================================================ */
.section-about{background:var(--paper);}
.about-sig{margin-top:20px;font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:rgba(10,10,10,.58);}
.about-body{padding-top:6px;}
.about-body p{font-size:clamp(18px,2.3vw,23px);line-height:1.52;color:var(--ink);letter-spacing:-.01em;max-width:40ch;text-wrap:pretty;}

/* ============================================================
   FINAL CTA BAND (single inverted moment)
   ============================================================ */
.cta-band{position:relative;overflow:hidden;background:var(--ink);color:var(--paper);padding:clamp(84px,13vh,148px) 0;}
.cta-band .container{position:relative;z-index:1;}
.cta-h{font-size:clamp(34px,5vw,56px);font-weight:600;letter-spacing:-.045em;line-height:1.04;max-width:18ch;text-wrap:balance;}
.cta-sub{color:var(--paper-70);font-size:clamp(16px,2vw,19px);line-height:1.6;max-width:54ch;margin:22px 0 38px;}
.cta-bracket{position:absolute;top:50%;right:-72px;transform:translateY(-50%);height:min(82vh,560px);width:auto;color:var(--paper);opacity:.05;pointer-events:none;z-index:0;}

/* ============================================================
   FOOTER (continues the dark base)
   ============================================================ */
.footer{background:var(--ink);color:var(--paper);padding:clamp(44px,5vw,60px) 0 44px;border-top:1px solid var(--paper-16);}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.footer-logo{display:flex;align-items:center;gap:11px;color:var(--paper);text-decoration:none;}
.footer-tag{color:var(--paper-70);font-size:13.5px;letter-spacing:-.01em;}
.rule-dark{background:var(--paper-16);margin:30px 0;}
.rule-dark::before,.rule-dark::after{background:var(--paper);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-legal{color:rgba(255,255,255,.55);font-size:12px;letter-spacing:.02em;}
.footer-links{display:flex;gap:26px;flex-wrap:wrap;}
.footer-links a{color:var(--paper-70);text-decoration:none;font-size:13px;transition:color 160ms;}
.footer-links a:hover{color:var(--paper);}

/* focus visibility on dark surfaces */
.cta-band :focus-visible,.footer :focus-visible{outline-color:var(--paper);}

@media (max-width:480px){
  .cta-bracket{right:-110px;opacity:.045;}
  .footer-top{flex-direction:column;align-items:flex-start;gap:14px;}
}

/* ============================================================
   LEGAL / PRIVACY
   ============================================================ */
.legal-h{font-size:clamp(32px,5vw,46px);font-weight:600;letter-spacing:-.04em;line-height:1.05;margin:8px 0 28px;}
.legal-body p{max-width:64ch;color:var(--ink-70);line-height:1.72;}
.legal-body p + p{margin-top:18px;}
.legal-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.legal-back{display:inline-block;margin-top:12px;font-weight:500;}