/* JBL Quantum Engine site — shared stylesheet */

:root{
  /* palette sampled from the Quantum Engine app UI */
  --bg:#17151f;
  --bg-2:#1e1b29;
  --panel:#292637;        /* app card background */
  --panel-2:#302d40;
  --line:#3a3650;
  --text:#f4f2fa;
  --muted:#9b96b4;
  --purple:#4e32b8;       /* app primary button */
  --purple-bright:#6042d6;
  --purple-2:#8b6bf5;     /* links / accent text */
  --glow:#feebff;         /* EQ curve highlight */
  --purple-soft:rgba(94,58,214,.16);
  --radius:14px;
  --max:1140px;
  --font:"Outfit",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--purple-2);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(23,21,31,.85);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;color:var(--text)}
.brand:hover{text-decoration:none}
.brand .mark{
  width:32px;height:32px;border-radius:9px;flex:none;
  display:block;object-fit:cover;background:transparent;
}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;line-height:1}
.nav-links{display:flex;gap:6px;margin-left:auto;align-items:center;flex-wrap:wrap}
.nav-links a{
  color:var(--muted);font-size:14.5px;font-weight:500;
  padding:8px 13px;border-radius:9px;
}
.nav-links a:hover{color:var(--text);background:var(--panel);text-decoration:none}
.nav-links a.active{color:var(--purple-2);background:var(--purple-soft)}
.nav-toggle{
  display:none;margin-left:auto;background:var(--panel);border:1px solid var(--line);
  color:var(--text);border-radius:9px;padding:8px 12px;font-size:18px;cursor:pointer;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 24px;border-radius:11px;
  font-weight:600;font-size:15.5px;border:1px solid transparent;cursor:pointer;
  transition:transform .12s ease,box-shadow .12s ease,background .15s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--purple),#6042d6);color:#ffffff;box-shadow:0 8px 24px rgba(94,58,214,.25)}
.btn-primary:hover{box-shadow:0 12px 30px rgba(94,58,214,.34)}
.btn-ghost{background:var(--panel);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:#4a4568}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}

/* ---------- hero ---------- */
.hero{
  padding:84px 0 70px;
  background:
    radial-gradient(900px 420px at 78% -8%,rgba(94,58,214,.18),transparent 62%),
    radial-gradient(700px 360px at 8% 8%,rgba(94,58,214,.07),transparent 60%);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--purple-soft);border:1px solid rgba(94,58,214,.3);
  color:var(--purple-2);font-size:13px;font-weight:600;
  padding:6px 13px;border-radius:999px;margin-bottom:20px;
}
.pill .dot{width:7px;height:7px;border-radius:50%;background:var(--purple);}
h1{
  font-size:clamp(34px,5vw,56px);line-height:1.06;margin:0 0 18px;
  letter-spacing:-.035em;font-weight:700;
}
h1 .accent{color:var(--purple)}
.lede{font-size:18.5px;color:var(--muted);max-width:56ch;margin:0}
.hero-meta{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
.hero-meta div{font-size:13px;color:var(--muted)}
.hero-meta strong{display:block;font-size:19px;color:var(--text);font-weight:600}

/* ---------- generic sections ---------- */
.section{padding:74px 0}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:64ch;margin-bottom:42px}
.section-head h2{font-size:clamp(26px,3.4vw,36px);margin:0 0 12px;letter-spacing:-.025em}
.section-head p{color:var(--muted);margin:0;font-size:17px}
.eyebrow{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--purple);font-weight:700;margin-bottom:10px;
}

/* ---------- cards ---------- */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;
  transition:border-color .15s ease,transform .15s ease;
}
.card:hover{border-color:#4a4568;transform:translateY(-2px)}
.card h3{margin:0 0 9px;font-size:18.5px;letter-spacing:-.015em}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .ico{
  width:42px;height:42px;border-radius:11px;
  background:var(--purple-soft);border:1px solid rgba(139,107,245,.22);
  display:grid;place-items:center;margin-bottom:16px;
  color:var(--purple-2);
}
.card .ico .ic{width:21px;height:21px;display:block}
.card:hover .ico{background:rgba(94,58,214,.26);color:#b9a3ff}

/* ---------- download box ---------- */
.dl-box{
  background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-radius:18px;padding:34px;
}
.dl-box h3{margin:0 0 6px;font-size:22px}
.dl-meta{display:flex;gap:26px;flex-wrap:wrap;margin:22px 0 0;padding-top:22px;border-top:1px solid var(--line)}
.dl-meta div{font-size:13px;color:var(--muted)}
.dl-meta strong{display:block;color:var(--text);font-size:15px;font-weight:600}

.checksum{
  margin-top:18px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);
}
.checksum code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12px;color:#9b96b4;background:var(--bg);
  border:1px solid var(--line);border-radius:8px;padding:9px 12px;
  overflow-wrap:anywhere;
}

/* ---------- tables ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
th,td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--panel-2);font-weight:600;font-size:13px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
tr:last-child td{border-bottom:none}
td.yes{color:#4ade80;font-weight:600}
td.no{color:#f87171;font-weight:600}

/* ---------- steps ---------- */
.steps{counter-reset:s;display:grid;gap:16px;padding:0;margin:0;list-style:none}
.steps li{
  counter-increment:s;position:relative;padding:22px 24px 22px 68px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
}
.steps li::before{
  content:counter(s);position:absolute;left:22px;top:21px;
  width:30px;height:30px;border-radius:9px;background:var(--purple);color:#ffffff;
  display:grid;place-items:center;font-weight:700;font-size:15px;
}
.steps h3{margin:0 0 5px;font-size:17px}
.steps p{margin:0;color:var(--muted);font-size:15px}

/* ---------- faq ---------- */
.faq details{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:0;margin-bottom:12px;overflow:hidden;
}
.faq summary{
  cursor:pointer;padding:20px 24px;font-weight:600;font-size:16.5px;list-style:none;
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--purple);font-size:22px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0;padding:0 24px 22px;color:var(--muted);font-size:15.5px}

/* ---------- notice ---------- */
.notice{
  background:var(--purple-soft);border:1px solid rgba(94,58,214,.28);
  border-radius:var(--radius);padding:20px 24px;color:#ffcdbe;font-size:15px;
}
.notice strong{color:#fff}

/* ---------- cta band ---------- */
.cta{
  text-align:center;padding:74px 0;
  background:radial-gradient(700px 320px at 50% 0%,rgba(94,58,214,.16),transparent 65%);
  border-top:1px solid var(--line);
}
.cta h2{font-size:clamp(26px,3.6vw,38px);margin:0 0 12px;letter-spacing:-.03em}
.cta p{color:var(--muted);margin:0 auto 26px;max-width:52ch;font-size:17px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:46px 0 34px;background:var(--bg-2)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px;margin-bottom:32px}
.foot-grid h4{font-size:13px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin:0 0 14px}
.foot-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.foot-grid a{color:var(--text);font-size:14.5px;opacity:.82}
.foot-grid a:hover{opacity:1;color:var(--purple-2)}
.disclaimer{
  border-top:1px solid var(--line);padding-top:22px;
  font-size:13px;color:#7e7999;line-height:1.7;
}

/* background clips: never show control chrome, including the big centre
   play button Safari/iOS overlays before playback starts */
video.autoloop{pointer-events:none}
video.autoloop::-webkit-media-controls{display:none!important}
video.autoloop::-webkit-media-controls-enclosure{display:none!important}
video.autoloop::-webkit-media-controls-start-playback-button{
  display:none!important;-webkit-appearance:none;
}

.shot-video{
  display:block;width:100%;height:auto;aspect-ratio:8/5;
  object-fit:cover;background:var(--panel);
}
/* ---------- visual placeholder ---------- */
.shot{
  border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--panel);
}
.shot-ph{
  aspect-ratio:16/10;display:grid;place-items:center;text-align:center;padding:24px;
  background:
    linear-gradient(160deg,rgba(94,58,214,.09),transparent 60%),
    repeating-linear-gradient(45deg,var(--panel) 0 12px,var(--panel-2) 12px 24px);
  color:#7e7999;font-size:13.5px;
}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav-toggle{display:block}
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:66px;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px 16px 16px;gap:2px;
  }
  .nav-links.open{display:flex}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .hero{padding:56px 0 48px}
  .section{padding:54px 0}
  .foot-grid{grid-template-columns:1fr}
}

/* ---------- video embeds ---------- */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.video-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
}
.video-frame{position:relative;aspect-ratio:16/9;background:var(--bg-2)}
.video-frame iframe,
.video-frame video{position:absolute;inset:0;width:100%;height:100%;border:0;object-fit:cover;display:block}
.video-card .meta{padding:18px 22px 22px}
.video-card .meta h3{margin:0 0 6px;font-size:17px;letter-spacing:-.015em}
.video-card .meta p{margin:0;color:var(--muted);font-size:14.5px}
.video-card .src{
  display:inline-block;margin-top:10px;font-size:12px;color:var(--muted);
  letter-spacing:.04em;text-transform:uppercase;
}
@media (max-width:1000px){.video-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){.video-grid{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.video-frame video{animation:none}}