/* ============ AETHER AI — cinematic landing ============ */
:root{
  --black:#050508;
  --black-2:#0A0A12;
  --white:#FFFFFF;
  --off:#F6F7FB;
  --ink:#0C0E16;
  --ink-2:#3A4051;
  --ink-3:#6B7285;
  --green:#25D366;
  --green-deep:#128C5A;
  --violet:#8B5CF6;
  --violet-deep:#6D28D9;
  --line:rgba(12,14,22,.09);
  --line-dark:rgba(255,255,255,.1);
  --glass-dark:rgba(255,255,255,.055);
  --glass-light:rgba(255,255,255,.62);
  --font-display:'Space Grotesk',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --max:1200px;
  --r-lg:24px;
  --r-md:16px;
  --shadow-soft:0 30px 80px -20px rgba(12,14,22,.25);
  --ease-out:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--black);
  color:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
.wrap{width:min(var(--max),92vw);margin-inline:auto}
h1,h2,h3,.display{font-family:var(--font-display);letter-spacing:-.02em}

::selection{background:var(--violet);color:#fff}

/* ---------- reveal primitives ---------- */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.12s}
.reveal[data-delay="2"]{transition-delay:.24s}
.reveal[data-delay="3"]{transition-delay:.36s}

/* ---------- nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .4s,border-color .4s,backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.nav-inner{
  width:min(var(--max),92vw);margin-inline:auto;
  display:flex;align-items:center;justify-content:space-between;
  padding-block:18px;
}
.nav.scrolled{
  background:rgba(5,5,8,.55);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line-dark);
}
.nav.light{background:rgba(255,255,255,.7);border-bottom-color:var(--line);color:var(--ink)}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:19px;letter-spacing:.14em}
.brand img{width:34px;height:34px}
.brand em{font-style:normal;font-weight:500;opacity:.55;letter-spacing:.2em;font-size:12px;margin-left:2px}
.nav-links{display:flex;gap:34px;font-size:14.5px;font-weight:500;opacity:.85}
.nav-links a{transition:opacity .2s}
.nav-links a:hover{opacity:.6}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:600;font-size:15.5px;font-family:var(--font-display);
  padding:14px 28px;border-radius:999px;
  transition:transform .35s var(--ease-out),box-shadow .35s,background .3s,color .3s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-green{background:var(--green);color:#04160B;box-shadow:0 10px 40px -8px rgba(37,211,102,.55)}
.btn-green:hover{box-shadow:0 16px 52px -8px rgba(37,211,102,.7)}
.btn-ghost{border:1px solid var(--line-dark);color:#fff;background:rgba(255,255,255,.04);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-sm{padding:10px 22px;font-size:14px}
.nav.light .btn-ghost{border-color:var(--line);color:var(--ink);background:rgba(12,14,22,.03)}

/* ---------- hero (scroll-scrub, pinned) ---------- */
.hero{height:340vh;position:relative}
.hero-sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;background:var(--black)}
.hero-media{position:absolute;inset:0}
.hero-media video{
  width:100%;height:100%;object-fit:cover;
  opacity:0;transition:opacity 1.2s ease;
  filter:saturate(1.05) contrast(1.04);
}
.hero-media video.ready{opacity:.92}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%}
.hero-vignette{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 30%,transparent 40%,rgba(5,5,8,.72) 100%),
    linear-gradient(to top,rgba(5,5,8,.9),transparent 32%),
    linear-gradient(to bottom,rgba(5,5,8,.6),transparent 26%);
}
.hero-copy{
  position:absolute;inset:0;z-index:5;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding-inline:6vw;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:rgba(255,255,255,.72);
  border:1px solid var(--line-dark);border-radius:999px;padding:9px 20px;
  background:rgba(255,255,255,.04);backdrop-filter:blur(10px);
  margin-bottom:34px;
}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{
  font-size:clamp(3rem,8.2vw,7.6rem);
  font-weight:700;line-height:.98;letter-spacing:-.035em;
  text-wrap:balance;
}
.hero h1 .l2{
  display:block;
  background:linear-gradient(92deg,#25D366 10%,#7DF3AC 45%,#8B5CF6 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:30px;max-width:640px;
  font-size:clamp(1.02rem,1.4vw,1.25rem);color:rgba(255,255,255,.66);
  text-wrap:balance;
}
.hero-formats{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap;justify-content:center}
.chip{
  font-size:13px;font-weight:600;letter-spacing:.06em;
  padding:8px 18px;border-radius:999px;
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.05);backdrop-filter:blur(8px);
  color:rgba(255,255,255,.85);
}
.hero-ctas{display:flex;gap:16px;margin-top:42px;flex-wrap:wrap;justify-content:center}
.hero-scrollcue{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:6;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-size:11.5px;letter-spacing:.3em;text-transform:uppercase;color:rgba(255,255,255,.5);
}
.hero-scrollcue .bar{width:1px;height:52px;background:linear-gradient(to bottom,var(--green),transparent);animation:drop 1.8s var(--ease-out) infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.hero-progress{
  position:absolute;right:34px;top:50%;transform:translateY(-50%);z-index:6;
  width:2px;height:140px;background:rgba(255,255,255,.12);border-radius:2px;overflow:hidden;
}
.hero-progress i{display:block;width:100%;height:0%;background:linear-gradient(var(--green),var(--violet));border-radius:2px}

/* ---------- logo strip ---------- */
.logos{background:var(--black);padding:84px 0 96px;position:relative;overflow:hidden}
.logos p.kicker{
  text-align:center;font-size:12.5px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;
  color:rgba(255,255,255,.42);margin-bottom:44px;
}
.marquee{overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:0;width:max-content;animation:marquee 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes marquee{to{transform:translateX(-50%)}}
.logo-item{
  display:flex;align-items:center;gap:12px;
  padding:0 44px;font-family:var(--font-display);font-weight:600;font-size:19px;
  color:rgba(255,255,255,.5);white-space:nowrap;
  transition:color .3s;
}
.logo-item:hover{color:rgba(255,255,255,.9)}
.logo-item svg{width:26px;height:26px;opacity:.8}

/* ---------- features pinned over clip 2 ---------- */
.features{height:400vh;position:relative;background:var(--black)}
.features-sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden}
.features-media{position:absolute;inset:0}
.features-media video{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s}
.features-media video.ready{opacity:.85}
.features-media .fallback{
  position:absolute;inset:0;
  background:
    radial-gradient(60% 70% at 70% 40%,rgba(139,92,246,.22),transparent 65%),
    radial-gradient(55% 60% at 25% 65%,rgba(37,211,102,.16),transparent 60%),
    var(--black-2);
}
.features-shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(5,5,8,.88) 30%,rgba(5,5,8,.25) 75%)}
.features-ui{position:relative;z-index:4;height:100%;display:flex;align-items:center}
.features-ui .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.7fr);gap:6vw;align-items:center}
.fstep{grid-area:1/1;opacity:0;transform:translateY(50px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out);pointer-events:none}
.fstep.active{opacity:1;transform:none;pointer-events:auto}
.fsteps{display:grid}
.fstep .num{
  font-family:var(--font-display);font-size:13px;letter-spacing:.34em;font-weight:600;
  color:var(--green);text-transform:uppercase;margin-bottom:22px;display:flex;align-items:center;gap:14px;
}
.fstep .num::after{content:"";height:1px;width:70px;background:linear-gradient(90deg,var(--green),transparent)}
.fstep h3{font-size:clamp(3rem,6.4vw,5.8rem);font-weight:700;line-height:1;letter-spacing:-.03em}
.fstep h3 span{background:linear-gradient(92deg,#fff 30%,rgba(255,255,255,.45));-webkit-background-clip:text;background-clip:text;color:transparent}
.fstep p{margin-top:26px;max-width:520px;font-size:clamp(1rem,1.25vw,1.18rem);color:rgba(255,255,255,.62)}
.fstep .mini{display:flex;gap:10px;margin-top:26px;flex-wrap:wrap}
.fdots{position:absolute;left:calc((100vw - min(var(--max),92vw))/2 - 46px);top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:14px;z-index:5}
.fdots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.22);transition:all .4s}
.fdots i.on{background:var(--green);box-shadow:0 0 14px var(--green);height:26px;border-radius:6px}

/* ---------- transition dark→light ---------- */
.fade-to-light{height:26vh;background:linear-gradient(to bottom,var(--black),var(--off));}

/* ---------- light sections base ---------- */
.light-body{background:var(--off);color:var(--ink)}
.section{padding:110px 0}
.kicker{
  font-size:12.5px;font-weight:700;letter-spacing:.3em;text-transform:uppercase;
  color:var(--green-deep);margin-bottom:18px;
}
.section h2{font-size:clamp(2.1rem,4.4vw,3.6rem);font-weight:700;line-height:1.06;letter-spacing:-.03em;text-wrap:balance}
.section .lead{margin-top:18px;font-size:clamp(1rem,1.3vw,1.2rem);color:var(--ink-3);max-width:620px}

/* ---------- metrics ---------- */
.metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:70px}
.metric{
  background:var(--glass-light);
  border:1px solid rgba(255,255,255,.8);
  box-shadow:0 20px 60px -24px rgba(12,14,22,.18);
  backdrop-filter:blur(16px);
  border-radius:var(--r-lg);padding:46px 40px;position:relative;overflow:hidden;
}
.metric::before{content:"";position:absolute;inset:auto -30% -60% -30%;height:120%;background:radial-gradient(closest-side,rgba(37,211,102,.13),transparent);pointer-events:none}
.metric:nth-child(2)::before{background:radial-gradient(closest-side,rgba(139,92,246,.14),transparent)}
.metric .val{font-family:var(--font-display);font-size:clamp(3rem,5vw,4.6rem);font-weight:700;letter-spacing:-.03em;line-height:1;color:var(--ink)}
.metric .val em{font-style:normal;font-size:.45em;color:var(--green-deep);vertical-align:.5em;margin-left:2px}
.metric:nth-child(2) .val em{color:var(--violet-deep)}
.metric h4{margin-top:14px;font-size:17px;font-weight:600;color:var(--ink)}
.metric p{margin-top:6px;font-size:14.5px;color:var(--ink-3)}

/* ---------- mockup ---------- */
.mockup .wrap{display:grid;grid-template-columns:1fr 1fr;gap:6vw;align-items:center}
.phone{
  width:min(340px,80vw);margin-inline:auto;
  border-radius:52px;background:#0B0D12;padding:14px;
  box-shadow:0 60px 120px -30px rgba(12,14,22,.45),0 24px 48px -20px rgba(109,40,217,.25);
  position:relative;
}
.phone::before{content:"";position:absolute;top:26px;left:50%;transform:translateX(-50%);width:110px;height:26px;background:#0B0D12;border-radius:16px;z-index:3}
.phone-screen{border-radius:40px;overflow:hidden;background:#0B141A;min-height:600px;display:flex;flex-direction:column}
.wa-head{background:#1F2C34;padding:34px 16px 12px;display:flex;align-items:center;gap:12px}
.wa-head .avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--violet),#4338CA);display:grid;place-items:center;flex:none}
.wa-head .avatar img{width:22px;height:22px}
.wa-head b{color:#E9EDEF;font-size:15px;display:block;line-height:1.25}
.wa-head small{color:#25D366;font-size:12px}
.wa-body{
  flex:1;padding:18px 12px;display:flex;flex-direction:column;gap:10px;
  background:#0B141A url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="80" height="80" opacity="0.04"><circle cx="12" cy="12" r="2" fill="white"/><circle cx="52" cy="40" r="1.6" fill="white"/><circle cx="28" cy="64" r="1.8" fill="white"/></svg>');
}
.msg{max-width:82%;padding:9px 13px;border-radius:12px;font-size:13.5px;line-height:1.45;color:#E9EDEF;opacity:0;transform:translateY(14px) scale(.97);transition:opacity .5s var(--ease-out),transform .5s var(--ease-out)}
.msg.show{opacity:1;transform:none}
.msg.in{background:#1F2C34;border-top-left-radius:4px;align-self:flex-start}
.msg.out{background:#005C4B;border-top-right-radius:4px;align-self:flex-end}
.msg .meta{display:block;text-align:right;font-size:10.5px;color:rgba(233,237,239,.55);margin-top:3px}
.msg .meta .tick{color:#53BDEB}
.msg.audio{display:flex;align-items:center;gap:10px;min-width:190px}
.msg.audio .play{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.12);display:grid;place-items:center;flex:none}
.msg.audio .play::before{content:"";border-left:10px solid #E9EDEF;border-block:6px solid transparent;margin-left:3px}
.wave{display:flex;align-items:center;gap:2.5px;height:22px;flex:1}
.wave i{width:2.5px;border-radius:2px;background:rgba(233,237,239,.65)}
.msg.photo{padding:5px}
.msg.photo .ph{display:block;width:200px;height:120px;border-radius:9px;background:linear-gradient(120deg,#25D366 -40%,#128C5A 30%,#1F2C34 90%);position:relative;overflow:hidden}
.msg.photo .ph::after{content:"📷 foto do sorriso";position:absolute;inset:auto 8px 8px;font-size:11px;color:rgba(255,255,255,.85)}
.msg.system{
  align-self:center;background:rgba(139,92,246,.16);border:1px solid rgba(139,92,246,.4);
  color:#D9CCFF;font-size:11.5px;padding:7px 14px;border-radius:999px;text-align:center;
}
.mock-copy .points{margin-top:34px;display:grid;gap:18px}
.point{display:flex;gap:16px;align-items:flex-start}
.point .ico{
  width:44px;height:44px;flex:none;border-radius:14px;display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px -10px rgba(12,14,22,.14);
  font-size:19px;
}
.point b{display:block;font-size:16px;color:var(--ink)}
.point span{font-size:14.5px;color:var(--ink-3)}

/* ---------- pricing ---------- */
.pricing{position:relative}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:54px;align-items:stretch}
.tier{
  background:var(--glass-light);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.85);border-radius:var(--r-lg);
  padding:42px 36px;display:flex;flex-direction:column;
  box-shadow:0 24px 64px -28px rgba(12,14,22,.18);
  transition:transform .4s var(--ease-out),box-shadow .4s;
  position:relative;
}
.tier:hover{transform:translateY(-6px)}
.tier.hot{
  background:linear-gradient(165deg,#0C0E16,#181233 90%);
  color:#fff;border-color:rgba(139,92,246,.4);
  box-shadow:0 40px 90px -30px rgba(109,40,217,.55);
  transform:scale(1.045);
  z-index:2;
}
.tier.hot:hover{transform:scale(1.045) translateY(-6px)}
.tier .tag{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:linear-gradient(92deg,var(--green),var(--violet));color:#fff;
  font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  padding:7px 18px;border-radius:999px;white-space:nowrap;
}
.tier h3{font-size:20px;font-weight:700}
.tier .for{font-size:13.5px;color:var(--ink-3);margin-top:4px;min-height:2.6em}
.tier.hot .for{color:rgba(255,255,255,.6)}
.tier .price{margin-top:22px;font-family:var(--font-display);display:flex;align-items:baseline;gap:6px}
.tier .price .cur{font-size:17px;font-weight:600;opacity:.7}
.tier .price .amount{font-size:52px;font-weight:700;letter-spacing:-.03em;line-height:1}
.tier .price .per{font-size:14px;color:var(--ink-3)}
.tier.hot .price .per{color:rgba(255,255,255,.6)}
.tier .setup{margin-top:10px;font-size:13.5px;font-weight:600;color:var(--ink-3)}
.tier.hot .setup{color:rgba(255,255,255,.6)}
.tier ul{list-style:none;margin-top:28px;display:grid;gap:12px;font-size:14.5px;flex:1}
.tier ul li{display:flex;gap:10px;align-items:flex-start;color:var(--ink-2)}
.tier.hot ul li{color:rgba(255,255,255,.82)}
.tier ul li::before{content:"✓";color:var(--green-deep);font-weight:800;flex:none}
.tier.hot ul li::before{color:var(--green)}
.tier .btn{margin-top:32px;width:100%}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{box-shadow:0 14px 34px -10px rgba(12,14,22,.4)}

/* ---------- FAQ ---------- */
.faq-list{margin-top:54px;max-width:820px;margin-inline:auto;display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:box-shadow .3s;
}
.faq-item[open]{box-shadow:0 18px 44px -20px rgba(12,14,22,.16)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 26px;font-weight:600;font-size:16.5px;font-family:var(--font-display);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  width:30px;height:30px;flex:none;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-size:17px;color:var(--green-deep);
  transition:transform .35s var(--ease-out),background .3s;
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:rgba(37,211,102,.12)}
.faq-item .faq-body{padding:0 26px 24px;color:var(--ink-3);font-size:15px;max-width:680px}

/* ---------- final CTA ---------- */
.final{position:relative;overflow:hidden;background:var(--black);color:#fff;padding:150px 0 130px}
.final-media{position:absolute;inset:0}
.final-media video{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.4s;filter:blur(2px) brightness(.7)}
.final-media video.ready{opacity:.55}
.final-media .grad{position:absolute;inset:0;background:radial-gradient(80% 90% at 50% 110%,rgba(109,40,217,.35),transparent 60%),linear-gradient(rgba(5,5,8,.82),rgba(5,5,8,.65))}
.final .wrap{position:relative;z-index:2;text-align:center}
.final h2{font-size:clamp(2.6rem,6vw,5.4rem);line-height:1.02}
.final h2 span{background:linear-gradient(92deg,#25D366,#8B5CF6);-webkit-background-clip:text;background-clip:text;color:transparent}
.final .lead{margin:24px auto 0;color:rgba(255,255,255,.65)}
.final .hero-ctas{margin-top:46px}
.final .note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.45)}

/* ---------- footer ---------- */
footer{background:var(--black);color:rgba(255,255,255,.55);padding:54px 0;border-top:1px solid var(--line-dark);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
footer .brand{font-size:16px}
footer .brand img{width:26px;height:26px}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .nav-links{display:none}
  .features-ui .wrap{grid-template-columns:1fr}
  .fdots{left:14px}
  .metrics-grid,.tiers{grid-template-columns:1fr;max-width:520px;margin-inline:auto}
  .tier.hot{transform:none}
  .tier.hot:hover{transform:translateY(-6px)}
  .mockup .wrap{grid-template-columns:1fr;gap:60px}
  .hero-progress{display:none}
  .hero{height:280vh}
  .features{height:340vh}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none}
}