/* SeatStep — shared design system across pages. Midnight canvas, one green,
   flat surfaces, weight-based type, orchestrated motion. */
:root{
  --bg:#041721; --bg-raised:#072430; --bg-card:#0A2B39;
  --line:#143644; --line-soft:#0F2A36;
  --green:#10B981; --green-bright:#34D399; --green-deep:#087443;
  --ink:#EAF2F1; --ink-2:#9CB0B5; --ink-3:#63797F;
  --amber:#F59E0B;
  --maxw:1120px; --pad:clamp(20px,5vw,40px);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;}
::selection{background:var(--green);color:var(--bg);}
a{color:var(--green-bright);text-decoration:none;}
a:hover{color:var(--green);}
:focus-visible{outline:2px solid var(--green-bright);outline-offset:3px;border-radius:4px;}
img,svg{max-width:100%;}

.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}
h1,h2,h3{margin:0;font-weight:800;letter-spacing:-0.025em;text-wrap:balance;}
h1{font-size:clamp(2.6rem,6.4vw,4.6rem);line-height:1.02;}
h2{font-size:clamp(1.95rem,4.2vw,3rem);line-height:1.06;letter-spacing:-0.02em;}
h3{font-size:1.2rem;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
.kicker{font-size:0.78rem;font-weight:600;letter-spacing:0.16em;text-transform:uppercase;color:var(--green-bright);}
.lead{font-size:clamp(1.1rem,1.7vw,1.32rem);line-height:1.55;color:var(--ink-2);}
.measure{max-width:62ch;}
.eyebrow-num{font-family:var(--mono);color:var(--green);font-weight:700;}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font:inherit;font-weight:650;font-size:1rem;
  padding:14px 22px;border-radius:12px;border:1px solid transparent;cursor:pointer;
  transition:transform .15s cubic-bezier(.22,1,.36,1),background .15s,border-color .15s,color .15s;}
.btn-primary{background:var(--green);color:var(--bg);}
.btn-primary:hover{background:var(--green-bright);transform:translateY(-2px);color:var(--bg);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--green);color:var(--green-bright);transform:translateY(-2px);}
.store{display:inline-flex;align-items:center;gap:11px;background:var(--ink);color:#041018;border-radius:13px;
  padding:11px 18px;text-decoration:none;transition:transform .15s cubic-bezier(.22,1,.36,1);}
.store:hover{transform:translateY(-2px);color:#041018;}
.store svg{width:22px;height:22px;flex:none;}
.store .t small{display:block;font-size:0.62rem;opacity:.72;font-weight:600;}
.store .t b{font-size:0.98rem;font-weight:700;}
.storebtns{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Nav ---------- */
header{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line-soft);}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;}
.brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);}
.brand svg{width:22px;height:22px;display:block;}
.brand b{font-weight:700;font-size:1.05rem;letter-spacing:-0.01em;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{color:var(--ink-2);font-size:0.94rem;font-weight:500;}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink);}
.nav-links a[aria-current="page"]{color:var(--green-bright);}
.nav-right{display:flex;align-items:center;gap:16px;}
.nav-right .btn{padding:9px 16px;font-size:0.92rem;}
.nav-toggle{display:none;background:none;border:0;color:var(--ink);cursor:pointer;padding:6px;}
@media(max-width:820px){
  .nav-links{position:fixed;inset:66px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--bg);border-bottom:1px solid var(--line);padding:8px var(--pad) 20px;
    transform:translateY(-120%);transition:transform .3s cubic-bezier(.22,1,.36,1);}
  .nav-links.open{transform:translateY(0);}
  .nav-links a{padding:14px 0;width:100%;border-bottom:1px solid var(--line-soft);font-size:1.05rem;}
  .nav-toggle{display:block;}
  .nav-right .btn{display:none;}
}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line-soft);padding:56px 0 40px;}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
@media(max-width:720px){.foot{grid-template-columns:1fr 1fr;}}
.foot .col h4{font-size:0.72rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 14px;font-weight:700;}
.foot .col a{display:block;color:var(--ink-2);font-size:0.94rem;padding:5px 0;}
.foot .col a:hover{color:var(--ink);}
.foot .about p{color:var(--ink-2);font-size:0.92rem;margin-top:14px;max-width:34ch;}
.foot-base{margin-top:40px;padding-top:20px;border-top:1px solid var(--line-soft);display:flex;
  justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--ink-3);font-size:0.84rem;}

/* ---------- Sections ---------- */
.pad-y{padding-top:clamp(64px,10vw,128px);padding-bottom:clamp(64px,10vw,128px);}
.divider{border-top:1px solid var(--line-soft);}
/* Alternating section bands — subtle contrast from one section to the next.
   Counts <section> only, so the marquee <div> doesn't offset the rhythm. */
main > section:nth-of-type(even){background:var(--bg-raised);}
main > section:nth-of-type(even) .card,
main > section:nth-of-type(even) .metric,
main > section:nth-of-type(even) .compare-wrap{background:var(--bg-card);border-color:color-mix(in srgb,var(--line) 70%,#0000);}
.center{text-align:center;}
.center .lead{margin-left:auto;margin-right:auto;}
.section-head{max-width:52ch;}
.section-head.center{margin-left:auto;margin-right:auto;}

/* ---------- Cards / grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center;}
@media(max-width:860px){.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}
.card{background:var(--bg-raised);border:1px solid var(--line);border-radius:18px;padding:28px 26px;
  transition:transform .2s cubic-bezier(.22,1,.36,1),border-color .2s;}
.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--green) 40%,var(--line));}
.card .ic{width:44px;height:44px;border-radius:12px;background:rgba(16,185,129,0.12);color:var(--green-bright);
  display:grid;place-items:center;margin-bottom:18px;}
.card h3{margin-bottom:8px;}
.card p{color:var(--ink-2);font-size:0.97rem;}

/* Metric cards */
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media(max-width:720px){.metrics{grid-template-columns:1fr;}}
.metric{border:1px solid var(--line);border-radius:16px;padding:26px;background:var(--bg-raised);}
.metric .n{font-size:clamp(2.2rem,4vw,3rem);font-weight:800;letter-spacing:-0.03em;color:var(--green-bright);
  font-variant-numeric:tabular-nums;}
.metric .l{color:var(--ink-2);font-size:0.95rem;margin-top:4px;}

/* Numbered process steps */
.steps{display:flex;flex-direction:column;gap:2px;}
.pstep{display:grid;grid-template-columns:auto 1fr;gap:22px;padding:26px 0;border-top:1px solid var(--line-soft);align-items:start;}
.pstep .num{font-family:var(--mono);font-size:1.1rem;font-weight:700;color:var(--green);min-width:38px;}
.pstep h3{margin-bottom:6px;font-size:1.35rem;}
.pstep p{color:var(--ink-2);max-width:56ch;}

/* Comparison table */
.compare{width:100%;border-collapse:collapse;font-size:0.96rem;}
.compare th,.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line-soft);}
.compare thead th{font-size:0.74rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--ink-3);font-weight:700;}
.compare thead th.us{color:var(--green-bright);}
.compare td.us{color:var(--ink);font-weight:600;}
.compare td.them{color:var(--ink-3);}
.compare tbody tr:hover{background:var(--line-soft);}
.compare .yes{color:var(--green);}
.compare-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;}

/* Hero copy — single column over the photo, held to a readable measure. */
.hero-copy{max-width:640px;}

/* Phone mock */
.phone-slot{display:flex;justify-content:center;}
.phone{width:min(320px,82vw);border-radius:34px;background:#030F16;border:1px solid var(--line);padding:12px;}
.phone .screen{background:var(--bg);border-radius:24px;overflow:hidden;padding:18px 16px 16px;}
.phone-brand{display:flex;align-items:center;gap:7px;justify-content:center;margin-bottom:16px;}
.phone-brand svg{width:16px;height:16px;}
.phone-brand span{font-size:0.9rem;font-weight:700;}

/* Marquee */
.marquee{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:18px 0;overflow:hidden;white-space:nowrap;}
.marquee .track{display:inline-block;animation:marq 26s linear infinite;}
.marquee span{color:#3f5760;font-size:0.85rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;margin:0 26px;}
@keyframes marq{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* Contact form */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
.field label{font-size:0.82rem;color:var(--ink-2);font-weight:600;}
.field input,.field textarea{font:inherit;font-size:1rem;background:var(--bg-raised);border:1px solid var(--line);
  border-radius:11px;padding:12px 14px;color:var(--ink);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--green);}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;}
.form-ok{color:var(--green-bright);font-weight:600;display:none;}
.form-ok.show{display:block;}
.form-err{color:#FF8A8A;font-weight:600;display:none;}
.form-err.show{display:block;}

/* ---------- Photo heroes / banners ----------
   Real photography (the app's own welcome imagery) behind a Midnight scrim so
   the brand holds and the copy stays legible. */
.hero-photo{position:relative;isolation:isolate;overflow:hidden;}
.hero-photo .hero-bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center 34%;
  filter:saturate(0.82) brightness(0.94);}
.hero-photo::after{content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(101deg, var(--bg) 30%, rgba(4,23,33,.74) 57%, rgba(4,23,33,.40) 100%),
    linear-gradient(to top, var(--bg) 1%, rgba(4,23,33,.10) 44%, transparent 78%);}
/* Centered banners (e.g. the download CTA) need an even, top-down scrim. */
.hero-photo.scrim-center::after{
  background:
    linear-gradient(180deg, rgba(4,23,33,.60) 0%, rgba(4,23,33,.52) 46%, var(--bg) 100%),
    linear-gradient(90deg, rgba(4,23,33,.42), rgba(4,23,33,.18) 50%, rgba(4,23,33,.42));}
/* A hairline seam of green at the base ties the photo back to the brand. */
.hero-photo::before{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;z-index:0;
  background:linear-gradient(90deg,transparent,rgba(16,185,129,.55) 22%,rgba(16,185,129,.55) 78%,transparent);}
@media(max-width:860px){
  .hero-photo::after{background:linear-gradient(180deg,rgba(4,23,33,.80) 0%,rgba(4,23,33,.72) 42%,var(--bg) 94%);}
  .hero-photo .hero-bg{background-position:center 24%;}
}

/* ---------- Animation engine ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1);}
.reveal.in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.06s;}.reveal.d2{transition-delay:.16s;}.reveal.d3{transition-delay:.26s;}.reveal.d4{transition-delay:.36s;}
.draw{stroke-dasharray:var(--len,300);stroke-dashoffset:var(--len,300);transition:stroke-dashoffset 1.8s ease-out;}
.in .draw,.draw.in{stroke-dashoffset:0;}
.pulse-node{animation:pulseNode 2.4s ease-in-out infinite;}
@keyframes pulseNode{0%,100%{filter:drop-shadow(0 0 0 rgba(16,185,129,.5));}50%{filter:drop-shadow(0 0 7px rgba(16,185,129,.7));}}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .draw{stroke-dashoffset:0;transition:none;}
  .marquee .track,.pulse-node{animation:none;}
}