/* reps. — marketing site
   Palette mirrors the app (css/duo.css) */
:root{
  --bg:#0e1620;
  --bg2:#0b111a;
  --surface:#162130;
  --surface2:#1c2937;
  --line:#25344a;
  --ink:#e8eef5;
  --muted:#93a3b6;
  --accent:#34d399;
  --accent-ink:#062018;
  --coral:#f0708a;
  --blue:#6da8e6;
  --gold:#f6c453;
  --radius:16px;
  --maxw:1080px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(14,22,32,.86);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;gap:20px;height:60px}
.brand{
  font-size:22px;font-weight:800;letter-spacing:-.02em;
  color:var(--ink);text-decoration:none;
}
.brand span{color:var(--accent)}
.nav nav{margin-left:auto;display:flex;gap:22px;align-items:center}
.nav nav a{color:var(--muted);font-size:14px;font-weight:600;text-decoration:none}
.nav nav a:hover{color:var(--ink)}
@media (max-width:720px){ .nav nav a.hide-sm{display:none} }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:12px;font-weight:700;font-size:15px;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .12s ease,filter .12s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface);border-color:var(--muted)}
.btn-sm{padding:9px 16px;font-size:14px}
/* nav link rules are more specific than .btn — restate button colours */
.nav nav a.btn-primary{color:var(--accent-ink)}
.nav nav a.btn-ghost{color:var(--ink)}

/* ---------- hero ---------- */
.hero{padding:72px 0 56px;position:relative}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 420px at 22% -8%,rgba(52,211,153,.14),transparent 62%),
             radial-gradient(620px 400px at 88% 8%,rgba(109,168,230,.10),transparent 64%);
}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
  color:var(--accent);background:rgba(52,211,153,.10);
  border:1px solid rgba(52,211,153,.28);border-radius:999px;padding:6px 14px;margin-bottom:22px;
}
h1{
  font-size:clamp(34px,5.4vw,54px);line-height:1.08;letter-spacing:-.03em;
  font-weight:800;margin:0 0 20px;
}
h1 .hl{color:var(--accent)}
.lede{font-size:clamp(17px,2.1vw,20px);color:var(--muted);margin:0 0 30px;max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
.hero-note{font-size:13.5px;color:var(--muted)}
.hero-note b{color:var(--ink);font-weight:600}
.hero-art{display:flex;justify-content:center}

/* Two REAL app screenshots in CSS phone bezels (620×1198 each, captured by
   site/tools/hero-shots.js). Front = a scenario card, back = the home screen
   peeking out behind it.

   NOTE — this is the reverse of Batch's arrangement, deliberately. Batch puts
   the lesson card in BACK because what stays visible of it is a diagram, which
   still reads at half width. reps' card is pure text, so cropping it in half
   leaves option pills with their left halves missing — exactly the "looks
   broken" failure Batch's own CSS warns about. The home screen survives the
   crop instead: cover art, the XP pill and the goal ring all read fine. */
.phones{position:relative;width:100%;max-width:360px}
.phone{
  margin:0;padding:7px;border-radius:34px;
  background:linear-gradient(160deg,#2b3a4d,#141d29);
  box-shadow:0 22px 48px rgba(0,0,0,.55), 0 1px 0 rgba(255,255,255,.10) inset;
}
/* height:auto is REQUIRED — the width/height attributes otherwise beat the CSS
   width and the phones render at their native 620×1198. Same trap as .course img. */
.phone img{width:100%;height:auto;display:block;border-radius:27px}
.phone.front{position:relative;z-index:2;width:64%;transform:rotate(-3deg)}
.phone.back{
  position:absolute;top:6%;right:0;z-index:1;width:57%;
  transform:rotate(7deg);transform-origin:bottom left;
}
@media (max-width:860px){
  .hero{padding:48px 0 40px}
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .hero-art{order:-1}
  .phones{max-width:320px}
}
/* On a phone, two phones is clutter — show the card only. */
@media (max-width:560px){
  .phones{max-width:236px}
  .phone.back{display:none}
  .phone.front{width:100%;transform:rotate(-2deg)}
}

/* ---------- stats ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg2)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding-top:26px;padding-bottom:26px}
.stat{text-align:center}
.stat b{display:block;font-size:clamp(22px,3.6vw,30px);font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.stat span{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:600}
@media (max-width:560px){ .stats .wrap{grid-template-columns:repeat(2,1fr);gap:20px 8px} }

/* ---------- sections ---------- */
section{padding:76px 0;scroll-margin-top:70px}
.sec-head{max-width:640px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--blue);margin:0 0 12px;
}
h2{font-size:clamp(26px,3.6vw,36px);line-height:1.16;letter-spacing:-.02em;font-weight:800;margin:0 0 14px}
.sec-head p{color:var(--muted);font-size:17px;margin:0}
.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- feature cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:860px){ .grid-3{grid-template-columns:1fr} }
.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;
}
.card h3{font-size:18px;margin:0 0 10px;font-weight:700;letter-spacing:-.01em}
.card p{color:var(--muted);font-size:15px;margin:0}
.card .ico{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  margin-bottom:16px;font-size:20px;font-weight:800;
  background:rgba(52,211,153,.12);color:var(--accent);
}
.card .ico.b{background:rgba(109,168,230,.13);color:var(--blue)}
.card .ico.g{background:rgba(246,196,83,.13);color:var(--gold)}

/* ---------- card types ---------- */
.types{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.type{
  border:1px solid var(--line);background:var(--surface);
  border-radius:999px;padding:9px 16px;font-size:14px;font-weight:600;color:var(--ink);
}
.type i{font-style:normal;color:var(--muted);font-weight:500}
.type.new{border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.08)}
.type.new i{color:var(--accent)}

/* ---------- courses ---------- */
.filters{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.chip{
  border:1px solid var(--line);background:var(--surface);color:var(--muted);
  border-radius:999px;padding:9px 18px;font-size:14px;font-weight:700;cursor:pointer;
  font-family:inherit;transition:all .12s ease;
}
.chip:hover{color:var(--ink);border-color:var(--muted)}
.chip[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.courses{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:900px){ .courses{grid-template-columns:repeat(3,1fr)} }
@media (max-width:680px){ .courses{grid-template-columns:repeat(2,1fr);gap:12px} }
.course{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;display:flex;flex-direction:column;
}
.course.hidden{display:none}
/* height:auto is required — without it the width/height attrs win over aspect-ratio */
.course img{aspect-ratio:3/2;object-fit:cover;width:100%;height:auto;background:var(--surface2)}
.course .body{padding:13px 14px 15px}
.course .cat{
  font-size:10.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
  color:var(--blue);display:block;margin-bottom:5px;
}
.course h3{font-size:14.5px;line-height:1.3;margin:0 0 6px;font-weight:700;letter-spacing:-.01em}
.course p{font-size:12px;color:var(--muted);margin:0;line-height:1.45}

/* ---------- install ---------- */
.install{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:860px){ .install{grid-template-columns:1fr} }
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px;
}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.panel-head svg{width:26px;height:26px;flex:none}
.panel-head h3{font-size:20px;margin:0;font-weight:800;letter-spacing:-.01em}
.panel .req{
  font-size:13px;color:var(--muted);margin:0 0 22px;padding-left:38px;
}
.panel .req b{color:var(--gold);font-weight:700}
ol.steps{list-style:none;counter-reset:s;margin:0;padding:0}
ol.steps li{
  counter-increment:s;position:relative;padding:0 0 22px 44px;
}
ol.steps li:last-child{padding-bottom:0}
ol.steps li::before{
  content:counter(s);position:absolute;left:0;top:-2px;
  width:29px;height:29px;border-radius:50%;
  background:var(--accent);color:var(--accent-ink);
  display:grid;place-items:center;font-weight:800;font-size:14px;
}
ol.steps li::after{
  content:"";position:absolute;left:14px;top:31px;bottom:6px;width:1px;background:var(--line);
}
ol.steps li:last-child::after{display:none}
ol.steps strong{display:block;font-size:15px;margin-bottom:3px;font-weight:700}
ol.steps span{font-size:14px;color:var(--muted)}
.key{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--surface2);border:1px solid var(--line);border-radius:6px;
  padding:1px 7px;font-size:13px;font-weight:600;color:var(--ink);white-space:nowrap;
}
.key svg{width:13px;height:13px}
.callout{
  margin-top:26px;background:var(--surface);border:1px solid var(--line);
  border-left:3px solid var(--gold);border-radius:10px;padding:18px 22px;
}
.callout p{margin:0;font-size:14.5px;color:var(--muted)}
.callout b{color:var(--ink)}

/* ---------- faq ---------- */
.faq{max-width:760px;margin:0 auto}
details{
  border-bottom:1px solid var(--line);padding:20px 0;
}
details summary{
  cursor:pointer;font-weight:700;font-size:16.5px;list-style:none;
  display:flex;align-items:flex-start;gap:14px;
}
details summary::-webkit-details-marker{display:none}
details summary::after{
  content:"+";margin-left:auto;color:var(--accent);font-weight:800;font-size:21px;line-height:1;flex:none;
}
details[open] summary::after{content:"\2212"}
details p{color:var(--muted);font-size:15px;margin:12px 0 0;padding-right:36px}

/* ---------- final cta ---------- */
.final{text-align:center;padding:88px 0}
.final h2{max-width:600px;margin-left:auto;margin-right:auto}
.final p{color:var(--muted);font-size:17px;max-width:520px;margin:0 auto 30px}
.final .hero-cta{justify-content:center}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);background:var(--bg2);padding:38px 0}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
footer .brand{font-size:19px}
footer .links{margin-left:auto;display:flex;gap:20px;flex-wrap:wrap}
footer a{color:var(--muted);font-size:14px;text-decoration:none}
footer a:hover{color:var(--ink)}
.disclaimer{
  margin-top:24px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);line-height:1.6;max-width:820px;
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}