/* HeartFlow Landing — V5.3
   - Apple-like, pastel modern, high conversion
   - WCAG AA (best effort)
   - No horizontal overflow in 360px
*/

:root{
  --max: 1120px;
  --gutter: clamp(18px, 4vw, 34px);

  --bg: #0b1220;
  --surface: rgba(255,255,255,.06);
  --surface2: rgba(255,255,255,.09);
  --text: rgba(248,250,255,.92);
  --muted: rgba(248,250,255,.68);
  --border: rgba(255,255,255,.12);

  --a1:#7db7ff; /* soft blue */
  --a2:#a7f3d0; /* mint */
  --a3:#f9a8d4; /* pink pastel */
  --p1:#c7d2fe; /* indigo pastel */
  --p2:#bae6fd; /* sky pastel */
  --p3:#fce7f3; /* rose pastel */

  --g1: radial-gradient(1200px 700px at 15% 10%, rgba(125,183,255,.22), transparent 60%),
        radial-gradient(900px 620px at 88% 12%, rgba(249,168,212,.18), transparent 55%),
        radial-gradient(1000px 760px at 60% 85%, rgba(167,243,208,.16), transparent 60%),
        linear-gradient(180deg, rgba(11,18,32,1), rgba(8,12,22,1));
  --g2: linear-gradient(135deg, rgba(125,183,255,.95), rgba(167,243,208,.90));
  --ctaGrad: linear-gradient(135deg, rgba(125,183,255,.85), rgba(167,243,208,.75), rgba(249,168,212,.70));
  --shadow: 0 18px 48px rgba(0,0,0,.28);
  --shadow2: 0 10px 30px rgba(0,0,0,.22);

  --r: 20px;
  --r2: 26px;
}

:root[data-theme="light"]{
  --bg: #f7fafc;
  --surface: rgba(11,18,32,.05);
  --surface2: rgba(11,18,32,.08);
  --text: rgba(11,18,32,.92);
  --muted: rgba(11,18,32,.62);
  --border: rgba(11,18,32,.14);
  --g1: radial-gradient(1000px 680px at 12% 0%, rgba(125,183,255,.25), transparent 60%),
        radial-gradient(900px 620px at 92% 8%, rgba(249,168,212,.22), transparent 55%),
        radial-gradient(1100px 800px at 55% 95%, rgba(167,243,208,.18), transparent 60%),
        linear-gradient(180deg, rgba(247,250,252,1), rgba(244,247,252,1));
  --shadow: 0 18px 46px rgba(20,30,48,.12);
  --shadow2: 0 10px 28px rgba(20,30,48,.10);

  /* CTA gradient in light theme should be softer/pastel */
  --ctaGrad: linear-gradient(135deg,
    color-mix(in oklab, var(--p1) 82%, white),
    color-mix(in oklab, var(--p2) 80%, white),
    color-mix(in oklab, var(--p3) 78%, white)
  );
}

*{box-sizing:border-box}
html,body{height:100%}
html,body{overflow-x:hidden; overflow-x:clip}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  color:var(--text);
  background: var(--g1);
  line-height:1.55;
}

/* subtle noise */
body::before{
  content:"";
  position:fixed; inset:0;
  pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.06'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity:.55;
}

a{color:inherit; text-decoration:none}
a:focus-visible, button:focus-visible, summary:focus-visible{outline:3px solid rgba(125,183,255,.55); outline-offset:3px; border-radius:12px}
img{max-width:100%; display:block}
p{margin:0 0 12px}
h1,h2,h3{letter-spacing:-.02em}
h1{font-size: clamp(34px, 5vw, 58px); line-height:1.05; margin:10px 0 12px}
h2{font-size: clamp(26px, 3.4vw, 40px); line-height:1.15}

.note{color:var(--muted)}
.sr-only{position:absolute; width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.container{
  width:min(var(--max), 100% - (var(--gutter)*2));
  margin-inline:auto;
}

.section{
  padding: 30px 0;
}
.section--hero{
  min-height: 100svh;
  display:flex;
  align-items:center;
  padding-top: 16px;
  padding-bottom: 30px; /* required */
}

/* Header */
.site-header{
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(12px);
  background: color-mix(in oklab, var(--bg) 84%, transparent);
  border-bottom:1px solid var(--border);
}
:root[data-theme="light"] .site-header{ background: rgba(247,250,252,.74); }

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding: 12px 0;
}
.brand{display:flex; align-items:center; gap:10px}
.brand .logo{height:34px;width:auto}
.brand .logo--light{display:none}
:root[data-theme="light"] .brand .logo--dark{display:none}
:root[data-theme="light"] .brand .logo--light{display:block}
.brand img{display:block}

.nav-desktop{
  display:flex; gap:14px;
  align-items:center;
  padding:6px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.05);
  border:1px solid var(--border);
}
.nav-desktop a{
  font-size:.95rem;
  color:var(--muted);
  padding:8px 10px;
  border-radius:999px;
}
.nav-desktop a:hover{color:var(--text); background: rgba(255,255,255,.06)}

.header-actions{
  display:flex; align-items:center; gap:10px;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  color:var(--text);
  padding:10px 12px;
  cursor:pointer;
  min-height:42px;
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{background: rgba(255,255,255,.08)}
.icon-btn span{font-weight:700; font-size:.92rem}

.scroll-progress{height:2px; background: transparent}
#progress{height:2px; width:0%; background: var(--g2); border-radius:999px}

/* Popovers */
.popover{
  position:absolute;
  top: calc(100% + 10px);
  right: 0;
  width: min(300px, 86vw);
  padding:10px;
  border-radius: 18px;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border:1px solid var(--border);
  box-shadow: var(--shadow2);
  z-index: 80;
}
:root[data-theme="light"] .popover{ background: rgba(255,255,255,.92); }
.popover a, .popover button{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid transparent;
  background: transparent;
  cursor:pointer;
  color: var(--text);
  font-weight:750;
  font-size:.98rem;
}
.popover a small, .popover button small{font-size:.78rem; color:var(--muted); font-weight:650}
.popover a:hover, .popover button:hover{ background: rgba(255,255,255,.06); border-color: var(--border)}

/* Buttons — gradient border premium */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 12px 16px;
  border-radius: 999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  color: var(--text);
  font-weight: 850;
  letter-spacing:-.01em;
  box-shadow: none;
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
  min-height: 44px;
}
.btn:hover{transform: translateY(-1px); background: rgba(255,255,255,.08); box-shadow: var(--shadow2)}
.btn--ghost{background: transparent}
.btn--primary{
  border-color: transparent;
  background: var(--ctaGrad);
  color: #07101f;
  box-shadow: 0 16px 40px color-mix(in oklab, var(--a1) 20%, rgba(0,0,0,.35));
}
.btn--primary:hover{transform: translateY(-1px); box-shadow: 0 18px 48px rgba(0,0,0,.25)}
.btn--primary:active{transform: translateY(0px)}

.cta-row{display:flex; gap:12px; flex-wrap:wrap; align-items:center}

.header-cta{display:inline-flex}
.menu-btn{display:none}

/* Drawer */
.drawer{
  position:fixed; inset:0;
  z-index: 120;
}
.drawer-backdrop{
  position:absolute; inset:0;
  background: rgba(0,0,0,.42);
}
.drawer-panel{
  position:absolute;
  right:0; top:0; bottom:0;
  width: min(420px, 92vw);
  padding: 14px;
  padding-top: calc(14px + env(safe-area-inset-top));
  padding-bottom: calc(14px + env(safe-area-inset-bottom));
  border-left: 1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  box-shadow: var(--shadow);
  display:flex;
  flex-direction:column;
  gap:12px;
}
:root[data-theme="light"] .drawer-panel{ background: rgba(255,255,255,.92) }

.drawer-top{display:flex; align-items:center; justify-content:space-between}
.drawer-nav{display:flex; flex-direction:column; gap:8px}
.drawer-nav a{
  padding: 12px 14px;
  border-radius: 14px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  font-weight: 850;
}
.drawer-nav a:hover{background: rgba(255,255,255,.08)}
.drawer-bottom{margin-top:auto}
.drawer-bottom .note{margin-top:10px}

/* Scroll lock */
.no-scroll body{position:fixed; width:100%}

/* Hero */
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 26px;
  align-items:center;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
  color: var(--muted);
  font-weight: 800;
  font-size: .92rem;
}
.kicker-dot{
  width:10px;height:10px;border-radius:999px;
  background: var(--g2);
  box-shadow: 0 0 0 5px rgba(125,183,255,.12);
}
.hero-sub{font-size: 1.05rem; color: var(--muted); margin-bottom: 14px; max-width: 60ch}
.hero-bullets{list-style:none; padding:0; margin: 0 0 16px; display:grid; gap:10px; max-width: 62ch}
.bullet{
  display:flex; gap:10px; align-items:flex-start;
  padding: 10px 12px;
  border-radius: 16px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.05);
}
.bullet svg{width:20px;height:20px; flex:0 0 auto; margin-top:2px}

.root-lang-hint{
  margin-top: 12px;
  font-size:.96rem;
  color: var(--muted);
}
.root-lang-hint a{
  display:inline-flex;
  align-items:center;
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  margin: 4px 6px 0 0;
}
.root-lang-hint a:hover{background: rgba(255,255,255,.08)}

.card{
  border-radius: var(--r2);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  box-shadow: var(--shadow2);
}
.card-inner{padding: 16px}
.hero-media-inner{
  padding: 18px;
  display:flex;
  justify-content:center;
  align-items:center;
}
.hero-media img{width:min(420px, 100%); height:auto; margin: 4px auto 0}

/* Experience */
.experience{padding-top:30px}
.exp-wrap{
  display:grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 18px;
  align-items:start;
}
.exp-media{position:sticky; top:92px; overflow:hidden}
.exp-media-inner{position:relative; aspect-ratio: 16/10}
.exp-media-inner img{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit: cover;
  opacity:0;
  transform: scale(1.02);
  transition: opacity .45s ease, transform .45s ease;
}
.exp-media-inner img.is-active{opacity:1; transform: scale(1)}
.steps{display:grid; gap:12px}
.step{
  display:flex;
  gap:12px;
  padding: 14px;
  border-radius: var(--r);
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
}
.step-num{
  width:40px; height:40px;
  border-radius: 16px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(255,255,255,.07);
  border:1px solid var(--border);
  font-weight: 900;
}

/* Grids */
.grid{
  display:grid;
  gap: 14px;
}
.benefits-grid{grid-template-columns: repeat(3, 1fr)}
.ing-grid{grid-template-columns: repeat(3, 1fr)}
.pricing-grid{grid-template-columns: repeat(3, 1fr)}
.bonus-grid{grid-template-columns: repeat(3, 1fr)}

.icon-pill{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
}
.icon-pill svg{width:18px;height:18px}
.icon-pill strong{font-size:.98rem}

.split{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 14px;
  align-items: start;
}

/* Keep the "How it works" media compact */
.how-img{
  max-width:420px;
  max-height: 320px;
  width: auto;
  height: auto;
  object-fit: contain;
  margin-inline: auto;
  display:block;
}

/* Hamburger icon (SVG) */
.menu-icon{width:20px;height:20px; display:block}
.menu-icon path{stroke: currentColor; stroke-width: 2.6; stroke-linecap: round}

/* Ingredients */
.ing-card{display:flex; gap:14px; align-items:center}
.ing-media{
  flex: 0 0 84px;
  width:84px; height:84px;
  border-radius: 18px;
  overflow:hidden;
  border:1px solid var(--border);
  background: rgba(255,255,255,.06);
  display:flex;
  align-items:center;
  justify-content:center;
}
.ing-media img{width:100%;height:100%; object-fit:cover}

/* Pricing plans */
.plan{display:flex; flex-direction:column; align-items:stretch}
.plan .card-inner{display:flex; flex-direction:column; height:100%}
.plan-top{display:flex; justify-content:space-between; gap:12px; align-items:flex-start}
.badge{
  display:inline-flex;
  padding: 7px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.06);
  border:1px solid var(--border);
  font-weight: 900;
  font-size:.85rem;
  color: var(--text);
}
.price{font-size: 42px; font-weight: 950; letter-spacing:-.03em; margin-top: 6px}
.plan-media{
  display:flex; justify-content:center; align-items:center;
  padding: 8px 6px;
  margin-top: 8px;
}
.plan-media img{width:min(300px, 100%); height:auto; object-fit:contain}
.plan-desc{color: var(--muted); margin: 6px 0 10px}
.plan__cta{
  margin-top:auto; /* REQUIRED alignment */
  display:flex;
  flex-direction:column;
  gap:10px;
}
.plan__cta .btn{width:100%}
.secure{
  display:flex; align-items:center; justify-content:center; gap:8px;
  color: var(--muted);
  font-weight: 750;
  font-size:.92rem;
}
.secure svg{width:18px;height:18px}

/* Guarantee */
.guarantee{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 14px;
  align-items:center;
}
.guarantee-media{
  display:flex; justify-content:center; align-items:center;
}
.guarantee-media img{width:min(360px, 86%); height:auto}

/* Bonus cards */
.bonus-media{
  aspect-ratio: 16/10;
  overflow:hidden;
  border-bottom:1px solid var(--border);
  border-radius: var(--r2) var(--r2) 0 0;
}
.bonus-media img{width:100%; height:100%; object-fit: cover}

/* FAQ */
.faq{display:grid; gap:10px}
details{
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255,255,255,.04);
  overflow:hidden;
}
summary{
  list-style:none;
  cursor:pointer;
  padding: 14px 14px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:center;
  font-weight: 900;
}
summary::-webkit-details-marker{display:none}
.faq-a{padding: 0 14px 14px; color: var(--muted)}
.chev{width:18px;height:18px; transition: transform .2s ease}
details[open] .chev{transform: rotate(180deg)}

/* Footer */
.site-footer{
  border-top: 1px solid var(--border);
  padding: 20px 0;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
}
.footer-grid{display:flex; justify-content:space-between; align-items:flex-start; gap:14px; flex-wrap:wrap}
.footer-links{display:flex; flex-wrap:wrap; gap:10px}
.footer-links a{
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-weight: 850;
  font-size:.94rem;
}
.footer-links a:hover{color: var(--text); background: rgba(255,255,255,.07)}
.footer-mini{display:flex; flex-direction:column; align-items:flex-end; gap:10px; color: var(--muted)}

/* Floating CTA — mobile only */
.floating-cta{
  position: fixed;
  left: 0; right: 0;
  bottom: 0;
  z-index: 70;
  padding: 10px var(--gutter);
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  display:none;
}
.floating-cta-inner{
  margin-inline:auto;
  width: min(var(--max), 100%);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 18px;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  box-shadow: var(--shadow);
}
.floating-cta-inner p{
  margin:0;
  color: var(--muted);
  font-weight: 850;
  font-size: .92rem;
}
.floating-cta.is-hidden{opacity:0; pointer-events:none; transform: translateY(6px); transition: .2s ease}
.floating-cta:not(.is-hidden){opacity:1; transform: translateY(0); transition: .2s ease}

/* Reveal motion */
[data-reveal]{
  opacity:0;
  transform: translateY(14px);
  transition: opacity .6s ease, transform .6s ease;
  will-change: transform, opacity;
}
.is-in{
  opacity:1 !important;
  transform: translateY(0) !important;
}
@media (prefers-reduced-motion: reduce){
  [data-reveal]{transition:none; transform:none}
  .btn{transition:none}
  .exp-media-inner img{transition:none}
  .chev{transition:none}
}

/* Responsive — mobile center alignment */
@media (max-width: 900px){
  .nav-desktop{display:none}
  .menu-btn{display:inline-flex}
  .header-cta{display:none} /* REQUIRED: no header CTA on mobile */
  .hero-grid{grid-template-columns:1fr}
  .hero-sub, .hero-bullets{margin-inline:auto}
  .cta-row{justify-content:center}
  .section--hero{padding-top: 10px}
  .exp-wrap{grid-template-columns:1fr}
  .exp-media{position:relative; top:auto}
  .benefits-grid, .ing-grid, .pricing-grid, .bonus-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .guarantee{grid-template-columns:1fr}
  .footer-mini{align-items:flex-start}
  .floating-cta{display:block}
  /* Align text center in mobile */
  .section, .site-footer, .hero-grid, .container{ text-align:center}
  .ing-card{flex-direction:column; text-align:center}
  .plan-top{flex-direction:column; align-items:center}
  .badge{margin-top:4px}
  .drawer-panel{ text-align:left }
}

@media (max-width: 360px){
  /* extra safety for tiny widths */
  .kicker{max-width: 100%}
  .floating-cta-inner{border-radius:16px}
}

.price--small{font-size: 22px; font-weight: 900; color: var(--text); margin-top: 10px}