/* ===================================================================
   EyeRest Flow — landing page
   Palette mirrors the app's "Calm Teal" theme.
   =================================================================== */
:root{
  --accent:#4FB7B2;
  --accent-deep:#2E8F98;
  --accent-soft:rgba(79,183,178,.12);
  --bg-start:#F6FAF9;
  --bg-end:#E7F4F2;
  --text:#173638;
  --muted:#607B7C;
  --surface:#ffffff;
  --surface-alt:rgba(255,255,255,.46);
  --border:rgba(46,102,104,.12);
  --shadow:0 16px 36px -24px rgba(23,54,56,.32);
  --shadow-sm:0 8px 18px -16px rgba(23,54,56,.24);
  --radius:20px;
  --ink:#0d1f20;
  --max:1140px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--text);
  background:var(--bg-start);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.12;letter-spacing:0;font-weight:800;color:var(--ink)}
em{font-style:normal;color:var(--accent-deep)}
.grad-text{background:linear-gradient(120deg,var(--accent),var(--accent-deep));-webkit-background-clip:text;background-clip:text;color:transparent}

.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:0;
  color:var(--accent-deep);
  background:var(--accent-soft);padding:6px 10px;border-radius:8px;margin-bottom:18px;
}
.eyebrow--light{color:#bdeef0;background:rgba(255,255,255,.1)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-weight:700;
  border:none;cursor:pointer;border-radius:14px;font-family:inherit;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),filter .25s var(--ease);
  white-space:nowrap;
}
.btn--primary{
  color:#fff;background:linear-gradient(125deg,var(--accent),var(--accent-deep));
  box-shadow:0 10px 24px -8px rgba(46,143,152,.6);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -10px rgba(46,143,152,.7);filter:saturate(1.08)}
.btn--lg{padding:15px 26px;font-size:1.02rem}
.btn--sm{padding:10px 18px;font-size:.92rem}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;transition:background .3s,box-shadow .3s,backdrop-filter .3s}
.nav.scrolled{background:rgba(246,250,249,.82);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--border)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink)}
.brand__icon{
  display:grid;place-items:center;width:29px;height:29px;border-radius:8px;color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  box-shadow:0 2px 5px var(--accent-soft);
}
.brand__name{font-size:1.05rem}
.nav__links{display:flex;gap:30px}
.nav__links a{font-weight:600;color:var(--muted);font-size:.95rem;transition:color .2s}
.nav__links a:hover{color:var(--accent-deep)}

/* ---------- hero ---------- */
.hero{position:relative;padding:64px 0 90px;overflow:hidden;background:linear-gradient(180deg,var(--bg-end),var(--bg-start) 62%)}
.hero__glow{
  display:none;
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.hero__title{font-size:3.6rem;margin-bottom:20px}
.hero__sub{font-size:1.16rem;color:var(--muted);max-width:30em;margin-bottom:30px}
.hero__cta{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
.hero__meta{font-size:.86rem;color:var(--muted)}
.trust{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px}
.trust li{font-size:.86rem;font-weight:600;color:var(--muted);display:flex;align-items:center;gap:8px}
.trust li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ---------- popover mockup ---------- */
.hero__art{position:relative;justify-self:center;width:360px;display:grid;place-items:center}
.popover{
  --surface:rgba(255,255,255,.74);
  --surface-alt:rgba(255,255,255,.46);
  --border:rgba(46,102,104,.09);
  position:relative;z-index:2;width:304px;padding:12px;border-radius:20px;
  background:
    radial-gradient(85% 80% at 0% 0%,rgba(246,250,249,.9),transparent 68%),
    radial-gradient(90% 88% at 100% 100%,rgba(231,244,242,.8),transparent 70%),
    linear-gradient(135deg,var(--bg-start),var(--bg-end));
  box-shadow:0 4px 10px rgba(0,0,0,.08);
  transform:scale(1.18);
  transform-origin:center;
}
.popover__header{display:flex;align-items:center;gap:8px;padding:0;margin-bottom:10px}
.pop-eye{display:grid;place-items:center;width:29px;height:29px;border-radius:8px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-deep));box-shadow:0 2px 5px var(--accent-soft)}
.pop-title{display:flex;flex-direction:column;gap:1px;line-height:1.12;flex:1;min-width:0}
.pop-title strong{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:0}
.pop-title span{font-size:9px;color:var(--muted);white-space:nowrap}
.pop-gear{display:grid;place-items:center;width:27px;height:27px;border-radius:8px;color:var(--muted);background:var(--surface-alt)}

.pop-card{display:flex;align-items:center;gap:13px;padding:8px 12px;border-radius:17px;background:var(--surface);border:1px solid var(--border);box-shadow:0 3px 8px rgba(0,0,0,.04);margin-bottom:10px}
.ring{position:relative;width:104px;height:104px;flex-shrink:0;display:grid;place-items:center}
.ring svg{transform:rotate(-90deg)}
.ring::before{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle,var(--accent-soft),transparent 68%);
  filter:blur(2.5px);opacity:.58;
}
.ring__track{stroke:color-mix(in srgb,var(--text) 5.5%,transparent)}
.ring__fill{stroke:var(--accent-deep);opacity:.82;stroke-dasharray:100;stroke-dashoffset:9;animation:ringfill 2.4s var(--ease) both;filter:drop-shadow(0 0 2px var(--accent-soft))}
@keyframes ringfill{from{stroke-dashoffset:100}to{stroke-dashoffset:9}}
.ring__label{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.ring__label span{font-size:6.5px;letter-spacing:1.05px;color:var(--muted);font-weight:600;opacity:.82}
.ring__label strong{font-size:23px;color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:0;line-height:1.15}
.pop-message{flex:1;min-width:0}
.pop-message h3{font-size:12.5px;font-weight:600;margin-bottom:8px;letter-spacing:0;color:var(--text)}
.pop-message p{font-size:10px;color:var(--muted);line-height:1.55}

.pop-primary{
  width:100%;height:42px;padding:0;border:none;border-radius:13px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:14px;
  font-family:inherit;color:#fff;background:linear-gradient(125deg,var(--accent),var(--accent-deep));
  box-shadow:0 4px 10px var(--accent-soft);
}
.pop-actions{display:flex;gap:12px;margin-top:8px}
.pop-secondary{
  flex:1;height:46px;padding:0;border-radius:18px;cursor:pointer;font-family:inherit;font-weight:600;font-size:12px;
  display:flex;align-items:center;justify-content:center;gap:6px;color:var(--text);
  background:rgba(255,255,255,.43);border:1px solid var(--border);
  box-shadow:0 4px 12px rgba(23,54,56,.05);
}
.pop-secondary .bars{width:10px;height:12px;border-left:3px solid var(--accent-deep);border-right:3px solid var(--accent-deep)}
.pop-secondary svg{color:var(--accent-deep)}
.pop-secondary .chevron{width:8px;height:8px;color:var(--muted);margin-left:1px}
.pop-stats{display:flex;align-items:center;justify-content:space-between;margin-top:10px;padding:9px 0;border-radius:13px;background:var(--surface-alt);border:1px solid var(--border)}
.pop-stats div{flex:1;display:flex;align-items:center;justify-content:center;gap:4px;min-width:0}
.pop-stats svg{color:var(--accent-deep);flex:0 0 auto}
.pop-stats strong{font-size:12px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1}
.pop-stats span{font-size:8px;color:var(--muted);opacity:.86;white-space:nowrap}
.pop-stats i{width:1px;height:22px;background:var(--border)}

/* ---------- value strip ---------- */
.strip{padding:8px 0 20px}
.strip__inner{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:26px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.strip__item{text-align:center;display:flex;flex-direction:column;gap:3px}
.strip__item b{font-size:1.5rem;color:var(--accent-deep)}
.strip__item span{font-size:.82rem;color:var(--muted)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section--alt{background:linear-gradient(180deg,var(--bg-end),var(--bg-start))}
.section__head{max-width:620px;margin:0 auto 52px;text-align:center}
.section__head h2{font-size:2.45rem;margin-bottom:14px}
.section__head p{color:var(--muted);font-size:1.08rem}

/* ---------- features grid ---------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:rgba(255,255,255,.74);border:1px solid var(--border);border-radius:13px;
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(46,143,152,.22)}
.card__icon{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;margin-bottom:18px;color:var(--accent-deep);background:var(--accent-soft)}
.card h3{font-size:1.08rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.96rem}
.card b{color:var(--text)}
.ic-1,.ic-2,.ic-3,.ic-4,.ic-5,.ic-6,.ic-7,.ic-8,.ic-9{background:var(--accent-soft)}

/* ---------- break overlay showcase ---------- */
.break-show__inner{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.ticks{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:12px}
.ticks li{display:flex;align-items:center;gap:11px;color:var(--text);font-weight:500}
.ticks li::before{content:"✓";display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--accent-soft);color:var(--accent-deep);font-weight:800;font-size:.8rem;flex-shrink:0}
.break-show__art{display:grid;place-items:center}
.overlay-mock{
  width:100%;max-width:470px;aspect-ratio:4/3;border-radius:20px;overflow:hidden;position:relative;
  background:
    radial-gradient(circle at center,rgba(79,183,178,.28),transparent 62%),
    linear-gradient(135deg,var(--bg-start),var(--bg-end));
  border:1px solid var(--border);box-shadow:var(--shadow);
  display:grid;place-items:center;color:var(--text);
}
.overlay-mock__body{text-align:center;padding:26px;display:flex;flex-direction:column;align-items:center}
.overlay-mock__eye{display:grid;place-items:center;width:82px;height:82px;margin:0 auto 16px;border-radius:50%;color:var(--accent);background:var(--surface-alt);border:1px solid var(--border)}
.overlay-mock__body > span{font-size:.72rem;font-weight:700;color:var(--accent-deep);text-transform:uppercase;margin-bottom:8px}
.overlay-mock__body h3{color:var(--text);font-size:1.55rem;font-weight:700;margin-bottom:8px}
.overlay-mock__body p{color:var(--muted);font-size:.95rem;max-width:24em;margin:0 auto 14px}
.overlay-mock__timer{position:relative;display:grid;place-items:center;width:120px;height:120px;margin:0 0 12px}
.overlay-mock__timer svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.overlay-mock__track{stroke:var(--surface-alt)}
.overlay-mock__progress{stroke:var(--accent);stroke-dasharray:100;stroke-dashoffset:14}
.overlay-mock__timer strong{font-size:1.65rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text)}
.overlay-mock__body em{font-size:.82rem;color:var(--muted);margin-bottom:16px}
.overlay-mock__btns{display:flex;gap:12px;justify-content:center}
.overlay-mock__btns span{padding:10px 20px;border-radius:999px;font-weight:600;font-size:.86rem}
.overlay-mock__btns .ghost{background:var(--surface-alt);color:var(--text);border:1px solid var(--border)}
.overlay-mock__btns .solid{background:var(--accent);color:#fff}

/* ---------- themes ---------- */
.themes{max-width:780px;margin:0 auto}
.swatches{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.swatch{
  cursor:pointer;border:1px solid var(--border);border-radius:13px;padding:16px;text-align:left;font-family:inherit;
  position:relative;overflow:hidden;min-height:96px;display:flex;flex-direction:column;justify-content:space-between;
  box-shadow:var(--shadow-sm);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  outline:2px solid transparent;outline-offset:3px;
}
.swatch:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.swatch[aria-selected="true"]{outline-color:var(--accent)}
.swatch__name{font-weight:700;font-size:.96rem}
.swatch__dot{width:29px;height:29px;border-radius:8px;box-shadow:0 4px 10px -5px rgba(0,0,0,.3)}
.swatch__check{position:absolute;top:12px;right:12px;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:.8rem;font-weight:800;opacity:0;transform:scale(.6);transition:.25s var(--ease)}
.swatch[aria-selected="true"] .swatch__check{opacity:1;transform:scale(1)}

/* ---------- languages ---------- */
.langs__inner{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:center}
.langs__copy h2{font-size:2.25rem;margin-bottom:12px}
.langs__copy p{color:var(--muted);font-size:1.06rem}
.langs__list{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.langs__list li{background:rgba(255,255,255,.74);border:1px solid var(--border);border-radius:13px;padding:14px 16px;font-weight:600;box-shadow:var(--shadow-sm);font-size:.96rem;display:flex;align-items:center;gap:10px}
.langs__list span{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--accent-soft);color:var(--accent-deep);font-size:.72rem;font-weight:800}

/* ---------- privacy ---------- */
.privacy{background:linear-gradient(135deg,#202B4D,#11172A);color:#e5edff;position:relative;overflow:hidden}
.privacy__inner{position:relative;display:grid;grid-template-columns:.7fr 1fr;gap:54px;align-items:center}
.privacy h2{color:#fff;font-size:2.45rem;margin-bottom:16px}
.privacy__copy p{color:rgba(229,237,255,.72);font-size:1.08rem;margin-bottom:24px}
.privacy__points{list-style:none;display:flex;flex-direction:column;gap:13px;margin-bottom:26px}
.privacy__points li{display:flex;align-items:center;gap:12px;font-weight:500;color:#dbe6ff}
.privacy__points span{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:rgba(92,200,255,.16);color:#7fd6ff;font-weight:800;flex-shrink:0}
.privacy__art{display:grid;place-items:center}
.lock{display:grid;place-items:center;width:132px;height:132px;border-radius:28px;color:#9fe0ff;background:rgba(37,48,83,.78);border:1px solid rgba(229,237,255,.07);box-shadow:0 16px 36px -24px rgba(0,0,0,.6)}
.link-arrow{font-weight:700;color:#7fd6ff;transition:gap .2s}
.link-arrow:hover{color:#bfeaff}

/* ---------- download ---------- */
.download__inner{text-align:center;max-width:620px;margin:0 auto;background:rgba(255,255,255,.74);border:1px solid var(--border);border-radius:20px;padding:48px 40px;box-shadow:var(--shadow)}
.download__badge{display:grid;place-items:center;width:56px;height:56px;border-radius:16px;margin:0 auto 22px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-deep));box-shadow:0 8px 20px -14px rgba(46,143,152,.7)}
.download h2{font-size:2.25rem;margin-bottom:12px}
.download p{color:var(--muted);font-size:1.08rem;margin-bottom:28px}
.download__note{display:block;margin-top:18px;font-size:.84rem;color:var(--muted)}

/* ---------- faq ---------- */
.faq{max-width:760px;margin:0 auto}
.faq__list{display:flex;flex-direction:column;gap:12px}
.faq details{background:rgba(255,255,255,.74);border:1px solid var(--border);border-radius:13px;padding:4px 22px;box-shadow:var(--shadow-sm);transition:border-color .2s}
.faq details[open]{border-color:rgba(79,183,178,.4)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;cursor:pointer;font-weight:700;font-size:1.04rem;list-style:none;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{position:relative;width:16px;height:16px;flex-shrink:0}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;background:var(--accent-deep);border-radius:2px;transition:transform .25s var(--ease)}
.faq summary i::before{top:7px;left:0;width:16px;height:2px}
.faq summary i::after{top:0;left:7px;width:2px;height:16px}
.faq details[open] summary i::after{transform:rotate(90deg);opacity:0}
.faq details p{padding:0 0 20px;color:var(--muted);font-size:.98rem}

/* ---------- footer ---------- */
.footer{background:var(--ink);color:#cfe3e2;padding:48px 0 28px}
.footer__inner{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.08);flex-wrap:wrap}
.footer__brand{display:flex;gap:12px;align-items:center}
.footer__brand .brand__icon{width:34px;height:34px}
.footer__brand strong{display:block;color:#fff;font-size:1.05rem}
.footer__brand span{font-size:.86rem;color:#8fb3b1}
.footer__links{display:flex;gap:26px;flex-wrap:wrap}
.footer__links a{color:#a9cbc9;font-weight:600;font-size:.92rem;transition:color .2s}
.footer__links a:hover{color:#fff}
.footer__base{display:flex;align-items:center;justify-content:space-between;padding-top:22px;font-size:.84rem;color:#7fa3a1;flex-wrap:wrap;gap:8px}
.footer__base a{color:#7fa3a1;transition:color .2s}
.footer__base a:hover{color:#bfe0de}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:920px){
  .hero__inner{grid-template-columns:1fr;gap:48px;text-align:center}
  .hero__title{font-size:3rem}
  .section__head h2,.privacy h2{font-size:2.2rem}
  .langs__copy h2,.download h2{font-size:2rem}
  .hero__copy{display:flex;flex-direction:column;align-items:center}
  .hero__cta{align-items:center}
  .trust{justify-content:center}
  .grid{grid-template-columns:repeat(2,1fr)}
  .break-show__inner,.privacy__inner,.langs__inner{grid-template-columns:1fr;gap:36px}
  .privacy__art{order:-1}
  .strip__inner{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .nav__links{display:none}
  .container{padding:0 18px}
  .hero{padding:48px 0 68px}
  .hero__title{font-size:2.35rem}
  .hero__sub{font-size:1.03rem}
  .hero__art{width:min(360px,calc(100vw - 36px))}
  .popover{width:min(304px,calc((100vw - 36px) / 1.18))}
  .pop-card{gap:10px;padding:8px 10px}
  .ring{width:96px;height:96px}
  .ring svg{width:96px;height:96px}
  .ring__label strong{font-size:21px}
  .section{padding:64px 0}
  .section__head{margin-bottom:36px}
  .section__head h2,.privacy h2{font-size:1.9rem}
  .grid,.swatches,.langs__list{grid-template-columns:1fr}
  .swatches{grid-template-columns:repeat(2,1fr)}
  .strip__inner{grid-template-columns:1fr 1fr;gap:22px 14px}
  .download__inner{padding:40px 24px}
  .overlay-mock{aspect-ratio:auto;min-height:520px}
  .overlay-mock__timer{width:112px;height:112px}
  .overlay-mock__btns{flex-direction:column;width:100%;max-width:230px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}