/* ============================================================
   yaya.cash — THE SIGNAL
   Premium alien-transmission aesthetic · mobile-first
   ============================================================ */

:root{
  --bg:#0a0908;
  --fg:#f4f1ea;
  --muted:#a39e93;
  --faint:#6f6a60;
  --accent:#34d399;
  --accent-ink:#04281c;
  --line:rgba(255,255,255,.08);
  --paper:#f3eee2;
  --paper-ink:#181510;
  --serif:'Fraunces',Georgia,serif;
  --sans:'Inter',system-ui,-apple-system,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

::selection{background:rgba(52,211,153,.28);color:#fff}

/* ---------- starfield ---------- */
#starfield{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.star{position:absolute;background:#fff;border-radius:50%;animation:starDrift ease-in-out infinite alternate}
@keyframes starDrift{
  0%{transform:translate3d(0,0,0);opacity:.15}
  50%{opacity:.7}
  100%{transform:translate3d(10px,-16px,0);opacity:.2}
}

/* ---------- nav ---------- */
#nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(10,9,8,.55);
  -webkit-backdrop-filter:blur(16px) saturate(1.3);
  backdrop-filter:blur(16px) saturate(1.3);
  border-bottom:1px solid var(--line);
  transition:background .3s ease;
}
#nav.scrolled{background:rgba(10,9,8,.85)}
.nav-inner{
  max-width:720px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 16px;min-height:64px;
}
.nav-brand{display:flex;align-items:center;gap:9px;min-height:44px;text-decoration:none;color:var(--fg)}
.nav-alien{width:26px;height:26px;filter:drop-shadow(0 0 8px rgba(52,211,153,.55))}
.nav-name{font-family:var(--mono);font-size:15px;letter-spacing:.02em;white-space:nowrap}
.nav-name em{font-style:normal;color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:10px}
.lang-switch{display:flex;gap:2px;padding:2px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.03)}
.lang-switch button{
  min-width:40px;min-height:40px;padding:0 10px;
  border:0;border-radius:999px;background:transparent;cursor:pointer;
  font-family:var(--mono);font-size:12px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.lang-switch button:hover{color:var(--fg)}
.lang-switch button.active{background:rgba(52,211,153,.16);color:var(--accent)}
.nav-signin{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 18px;border-radius:999px;
  border:1px solid rgba(52,211,153,.4);color:var(--accent);
  font-family:var(--mono);font-size:13px;text-decoration:none;white-space:nowrap;
  transition:background .2s ease,box-shadow .2s ease;
}
.nav-signin:hover{background:rgba(52,211,153,.1);box-shadow:0 0 18px rgba(52,211,153,.25)}

/* ---------- layout ---------- */
main{position:relative;z-index:1}
.container{max-width:720px;margin:0 auto}
.section{padding:80px 20px}
section[id]{scroll-margin-top:84px}
@media(min-width:640px){
  .section{padding:120px 24px}
  .nav-inner{padding:10px 24px}
}

/* ---------- reveal on scroll ---------- */
.reveal{
  opacity:0;transform:translateY(22px);
  transition:opacity .7s cubic-bezier(.2,.6,.2,1),transform .7s cubic-bezier(.2,.6,.2,1);
  transition-delay:var(--d,0ms);
}
.reveal.visible{opacity:1;transform:none}

/* ---------- hero ---------- */
.hero{
  min-height:100svh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;
  padding:120px 20px 80px;
}
.alien-aura{position:relative;width:clamp(80px,22vw,120px);height:clamp(80px,22vw,120px);margin-bottom:34px}
.alien-aura::before{
  content:"";position:absolute;inset:-60%;border-radius:50%;
  background:radial-gradient(circle,rgba(52,211,153,.38) 0%,rgba(52,211,153,.1) 45%,transparent 70%);
  animation:auraPulse 3s ease-in-out infinite;
}
.alien-glyph{
  position:relative;width:100%;height:100%;
  filter:drop-shadow(0 0 20px rgba(52,211,153,.55));
  animation:float 3s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes auraPulse{0%,100%{opacity:.65;transform:scale(1)}50%{opacity:1;transform:scale(1.09)}}
.kicker{
  display:inline-block;max-width:92%;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);
  border:1px solid rgba(52,211,153,.35);border-radius:999px;
  background:rgba(52,211,153,.06);
  padding:9px 16px;
}
.hero h1{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(40px,8vw,80px);
  line-height:1.04;letter-spacing:-.01em;
  margin:26px 0 30px;
}
.wallet-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;max-width:600px}
.wallet-badge{
  font-family:var(--mono);font-size:12px;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.03);
  padding:7px 14px;white-space:nowrap;
}

/* ---------- terminal ---------- */
.terminal{
  border:1px solid rgba(52,211,153,.24);border-radius:16px;overflow:hidden;
  background:linear-gradient(180deg,#0c130e 0%,#090e0b 100%);
  box-shadow:0 0 44px rgba(52,211,153,.08),0 24px 60px rgba(0,0,0,.5);
  text-align:left;
}
.terminal-bar{
  display:flex;align-items:center;gap:7px;
  padding:12px 14px;
  background:rgba(255,255,255,.03);
  border-bottom:1px solid rgba(52,211,153,.14);
}
.terminal-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.14)}
.terminal-dot:first-child{background:rgba(52,211,153,.55)}
.terminal-title{margin-left:auto;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--muted)}
.terminal-body{
  padding:20px 18px 22px;
  font-family:var(--mono);
  font-size:clamp(11.5px,2.9vw,13.5px);
  line-height:1.9;
  color:#c9f7e4;
}
.t-line{transition:opacity .5s ease,transform .5s ease}
.t-line.t-pending{opacity:0;transform:translateY(6px)}
.t-tag{color:var(--accent);font-weight:500}
.t-caret{display:inline-block;margin-top:6px;color:var(--accent);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.terminal-caption{
  margin:22px auto 0;max-width:46ch;
  text-align:center;color:var(--muted);font-size:14.5px;
}

/* ---------- manifesto ---------- */
.manifesto blockquote{
  margin:0;position:relative;
  background:var(--paper);color:var(--paper-ink);
  border-radius:22px;
  padding:clamp(34px,7vw,60px);
  font-family:var(--serif);font-weight:500;
  font-size:clamp(21px,4.6vw,31px);
  line-height:1.42;
  box-shadow:0 30px 80px rgba(0,0,0,.45);
}
.manifesto blockquote::before{
  content:"\201C";display:block;
  font-family:var(--serif);font-size:64px;line-height:.6;
  color:var(--accent);
  margin-bottom:18px;
}

/* ---------- pricing ---------- */
.section-head{text-align:center;margin-bottom:44px}
.section-kicker{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
}
.section-title{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(28px,5.6vw,44px);
  line-height:1.12;margin:14px 0 0;
}
.pricing-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:640px){.pricing-grid{grid-template-columns:1fr 1fr;gap:22px}}
.pricing-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:20px;
  background:rgba(255,255,255,.02);
  padding:30px 26px;
}
.pricing-featured{
  border-color:rgba(52,211,153,.55);
  background:linear-gradient(180deg,rgba(52,211,153,.09),rgba(52,211,153,.03));
  box-shadow:0 0 50px rgba(52,211,153,.12);
}
.pricing-tier{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin-bottom:16px;
}
.pricing-featured .pricing-tier{color:var(--accent)}
.pricing-price{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(38px,8vw,50px);line-height:1;
  margin-bottom:22px;
}
.pricing-currency{font-size:.45em;color:var(--muted);margin-right:2px}
.pricing-period{font-family:var(--mono);font-size:14px;color:var(--muted);margin-left:4px}
.pricing-features{list-style:none;margin:0 0 28px;padding:0;display:grid;gap:11px;flex:1}
.pricing-features li{position:relative;padding-left:26px;color:#d8d4ca;font-size:15px}
.pricing-features li::before{content:"\2713";position:absolute;left:0;top:0;font-family:var(--mono);color:var(--accent)}
.pricing-features strong{color:var(--fg)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 24px;border-radius:999px;
  font-weight:600;font-size:15px;text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn-outline{border:1px solid rgba(255,255,255,.22);color:var(--fg)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 0 26px rgba(52,211,153,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(52,211,153,.45)}

/* ---------- final CTA ---------- */
.final-cta{position:relative;text-align:center;overflow:hidden}
.final-cta::before{
  content:"";position:absolute;left:50%;top:50%;
  width:min(560px,92vw);height:min(560px,92vw);
  transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(52,211,153,.12),transparent 65%);
  pointer-events:none;
}
.final-cta .container{position:relative;display:flex;flex-direction:column;align-items:center}
.alien-glyph-sm{
  width:48px;height:48px;margin-bottom:22px;
  filter:drop-shadow(0 0 14px rgba(52,211,153,.6));
  animation:float 3s ease-in-out infinite;
}
.final-cta h2{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(30px,6.4vw,54px);
  line-height:1.08;margin:0 0 14px;
}
.final-sub{color:var(--muted);font-size:17px;margin:0 0 34px;max-width:40ch}
.btn-download{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:54px;padding:0 42px;border-radius:999px;
  background:var(--accent);color:var(--accent-ink);
  font-weight:600;font-size:16px;text-decoration:none;
  box-shadow:0 0 34px rgba(52,211,153,.35);
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn-download:hover{transform:translateY(-2px);box-shadow:0 0 52px rgba(52,211,153,.55)}

/* ---------- footer ---------- */
.footer{position:relative;z-index:1;border-top:1px solid var(--line);padding:52px 20px 44px}
.footer-inner{max-width:720px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center}
.footer-brand{display:inline-flex;align-items:center;gap:9px;min-height:44px;text-decoration:none;color:var(--fg);font-family:var(--mono);font-size:14px}
.footer-brand em{font-style:normal;color:var(--accent)}
.footer-alien{width:22px;height:22px;filter:drop-shadow(0 0 6px rgba(52,211,153,.5))}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 24px}
.footer-links a{
  display:inline-flex;align-items:center;min-height:44px;
  color:var(--muted);text-decoration:none;font-size:14px;
  transition:color .2s ease;
}
.footer-links a:hover{color:var(--accent)}
.footer-copy{font-family:var(--mono);font-size:12px;color:var(--faint);margin:0}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{transition:none;opacity:1;transform:none}
  .alien-glyph,.alien-glyph-sm,.alien-aura::before,.star,.t-caret{animation:none}
  .t-line{transition:none}
}