/* ═══════════════════════════════════════════════════════════════
   duo — waitlist, built on cero.finance's "Your Account" section:
   one saturated colour field, big serif left, a silver iPhone right
   running the duo home screen. cero's lime → duo's sky.
   ═══════════════════════════════════════════════════════════════ */
:root {
  --field: #8ec5ff;
  --ink: #0c1a3b;
  --ink-70: rgba(12,26,59,.7);
  --app: #f6f7f9;
  --gloss: linear-gradient(180deg, #e6f3ff 0%, #b8dbff 45%, #7ab8ff 100%);
  --serif: "Gentium Book Plus", "Gentium Book Basic", Georgia, serif;
  --sans: "Inter Tight", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --gut: clamp(20px, 2.5vw, 36px);
}
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; }
body { min-height: 100svh; background: var(--field); color: var(--ink); font: 400 16px/1.45 var(--sans); letter-spacing: -.01em; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body.is-loading { overflow: hidden; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--field); }
.hp { position: absolute; left: -9999px; opacity: 0; }

/* ─── loader ─── */
.loader { position: fixed; inset: 0; z-index: 100; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 22px;
  background: linear-gradient(180deg, #a9d3ff 0%, #e6f2ff 45%, #fff 75%, #dcecff 100%); transition: clip-path 1.1s var(--ease); clip-path: inset(0 0 0 0); }
.loader.done { clip-path: inset(0 0 100% 0); }
.loader-mark { width: 120px; animation: breathe 1.6s var(--ease) infinite alternate; filter: drop-shadow(0 18px 30px rgba(31,95,196,.25)); }
.loader-text { margin: 0; font-size: 13px; color: #4f5049; }
.loader-text span { animation: dot 1.2s infinite; opacity: 0; }
.loader-text span:nth-child(2) { animation-delay: .15s; } .loader-text span:nth-child(3) { animation-delay: .3s; } .loader-text span:nth-child(4) { animation-delay: .45s; }
@keyframes dot { 30%, 70% { opacity: 1; } }
@keyframes breathe { from { transform: scale(.94); } to { transform: scale(1.04); } }

/* ─── nav ─── */
.nav { position: fixed; inset: 0 0 auto; z-index: 20; display: flex; justify-content: space-between; align-items: center; padding: max(20px, env(safe-area-inset-top)) var(--gut) 0; }
.brand { display: flex; align-items: center; gap: 6px; }
.brand img { width: 34px; filter: drop-shadow(0 2px 4px rgba(12,40,110,.2)); }
.brand span { font: 700 34px/1 var(--serif); letter-spacing: -.04em; }
.pill { background: var(--ink); color: #f6f7f9; font: 500 16px/1 var(--sans); letter-spacing: -.02em; padding: 15px 26px; border-radius: 100px; transition: transform .3s var(--ease); }
.pill:hover { transform: translateY(-1px); }

/* ─── section ─── */
.sec { min-height: 100svh; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 40px; padding: 110px calc(var(--gut) + 80px) 60px; }
.h { margin: 0; font: 400 clamp(46px, 4.5vw, 65px)/.92 var(--serif); letter-spacing: -.03em; }
.sub { margin: 18px 0 0; font-size: 20px; line-height: 1.3; color: var(--ink-70); max-width: 25ch; }
.join { display: flex; gap: 6px; margin-top: 34px; max-width: 430px; padding: 6px; border-radius: 100px; background: rgba(255,255,255,.55); box-shadow: inset 0 1px 0 rgba(255,255,255,.7), inset 0 0 0 1px rgba(12,26,59,.08); transition: box-shadow .3s; }
.join:focus-within { box-shadow: inset 0 0 0 1.5px var(--ink), 0 0 0 5px rgba(12,26,59,.08); }
.join input { flex: 1; min-width: 0; border: 0; outline: 0; background: none; font: 400 16px/1 var(--sans); color: var(--ink); padding: 0 8px 0 18px; }
.join input::placeholder { color: rgba(12,26,59,.5); }
.go { flex: none; height: 50px; padding: 0 24px; border: 0; border-radius: 100px; background: var(--ink); color: #f6f7f9; font: 500 16px/1 var(--sans); letter-spacing: -.02em; cursor: pointer; transition: transform .3s var(--ease), opacity .3s; }
.go:hover { transform: translateY(-1px); } .go:active { transform: scale(.97); } .go:disabled { opacity: .6; }
.msg { min-height: 22px; margin: 12px 0 0 18px; font-size: 14px; color: var(--ink); }
.coming { margin: 26px 0 0; font: italic 400 18px/1 var(--serif); color: var(--ink-70); }
.foot { position: absolute; left: var(--gut); right: var(--gut); bottom: 18px; font-size: 11.5px; color: rgba(12,26,59,.55); }

/* ─── entrance (after loader) ─── */
.rise { opacity: 0; transform: translateY(26px); transition: opacity 1s var(--ease), transform 1.2s var(--ease); }
.ready .rise { opacity: 1; transform: none; }
.r1 { transition-delay: .05s; } .r2 { transition-delay: .15s; } .r3 { transition-delay: .3s; } .r4 { transition-delay: .45s; }
.iphone.rise { transform: translateY(120px); transition-duration: 1.2s, 1.6s; }
.ready .iphone.rise { transform: none; }

/* ═══ THE iPHONE — silver, front-on, like cero's ═══ */
.stage { position: relative; display: grid; justify-items: center; }
.iphone { position: relative; width: 418px; height: 872px; zoom: .82; z-index: 1; }
.frame { position: absolute; inset: 0; border-radius: 68px; padding: 5px;
  background: linear-gradient(140deg, #9fc6ff 0%, #3a67b8 10%, #1f3f82 30%, #2d58a6 55%, #1a3570 78%, #7fb0f7 100%);
  box-shadow: inset 0 0 0 1.2px rgba(170,205,255,.95), inset 0 0 0 2.6px rgba(40,80,160,.9), 0 50px 80px -40px rgba(12,26,59,.5); }
.frame::before, .frame::after { content: ""; position: absolute; width: 4px; border-radius: 2px; background: linear-gradient(90deg, #2d57a6, #7aa8ee); }
.frame::before { left: -3px; top: 180px; height: 62px; box-shadow: 0 78px 0 #3a67b8; }
.frame::after { right: -3px; top: 250px; height: 100px; }
.bez { position: absolute; inset: 5px; border-radius: 63px; background: #050506; padding: 9px; }
.scr { position: relative; width: 100%; height: 100%; border-radius: 54px; overflow: hidden; background: var(--app); color: var(--ink); }
.island { position: absolute; left: 50%; top: 11px; width: 124px; height: 36px; margin-left: -62px; border-radius: 20px; background: #000; z-index: 5; }
.sb { display: flex; justify-content: space-between; align-items: center; height: 54px; padding: 8px 30px 0 46px; font: 600 17px/1 var(--sans); }
.sbi { display: flex; gap: 6px; align-items: center; } .sbi svg { height: 12px; fill: currentColor; }
.bat { font: 700 9px/1 var(--sans); background: var(--ink); color: #fff; border-radius: 4px; padding: 2px 3px; }

.hdr { display: flex; align-items: center; gap: 12px; padding: 6px 18px 0; height: 60px; }
.av { width: 42px; height: 42px; border-radius: 50%; background: var(--gloss); display: grid; place-items: center; font: 400 21px/1 var(--serif); box-shadow: inset 0 1px 0 #fff, 0 4px 12px -4px rgba(47,127,230,.5); }
.ttl { font: 400 25px/1 var(--serif); letter-spacing: -.02em; }
.sp { flex: 1; }
.cb { width: 40px; height: 40px; border-radius: 50%; background: #fff; box-shadow: inset 0 0 0 1px rgba(12,26,59,.08); display: grid; place-items: center; }
.cb svg { width: 18px; fill: none; stroke: var(--ink); stroke-width: 1.8; stroke-linecap: round; }

.gauge { position: relative; height: 236px; margin-top: 4px; }
.gauge svg { position: absolute; left: 0; top: 0; width: 100%; height: 236px; overflow: visible; }
.gauge line { stroke-width: 3.2; stroke-linecap: round; }
.gglow { position: absolute; left: 30px; right: 30px; bottom: -34px; height: 150px; background: radial-gradient(50% 60% at 50% 100%, rgba(122,184,255,.85), rgba(122,184,255,0)); filter: blur(6px); }
.gnum { position: absolute; left: 0; right: 0; bottom: 8px; text-align: center; font: 500 100px/1 var(--sans); letter-spacing: -.055em; font-variant-numeric: tabular-nums; }

.glosscard { margin: 18px 16px 0; border-radius: 22px; padding: 16px 18px 18px; background: var(--gloss); box-shadow: inset 0 1.5px 0 rgba(255,255,255,.95), inset 0 0 0 1px rgba(255,255,255,.4), 0 14px 30px -18px rgba(47,127,230,.8); }
.gc-top { display: flex; justify-content: space-between; align-items: center; font: 400 16px/1 var(--sans); color: rgba(12,26,59,.62); }
.cchev { width: 28px; height: 28px; border-radius: 50%; background: rgba(12,26,59,.08); display: grid; place-items: center; }
.cchev svg { width: 14px; fill: none; stroke: var(--ink); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.gc-amt { display: flex; align-items: baseline; gap: 6px; margin: 10px 0 14px; }
.gc-amt b { font: 500 30px/1 var(--sans); letter-spacing: -.035em; }
.gc-amt span { font: 400 16px/1 var(--sans); color: rgba(12,26,59,.58); }
.bar { height: 12px; border-radius: 8px; background: rgba(12,26,59,.12); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, #0c1a3b, #22407e); transition: width 1.4s var(--ease) .9s; }
.ready .bar i { width: 100%; }
.duo2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 16px 0; }
.wcard { border-radius: 22px; background: #fff; box-shadow: inset 0 0 0 1px rgba(12,26,59,.08); padding: 15px 16px 16px; }
.wcard .gc-top { font-size: 15px; }
.wcard > b { display: block; margin-top: 12px; font: 500 26px/1 var(--sans); letter-spacing: -.035em; color: rgba(12,26,59,.62); }
.wcard > b small { font-size: 15px; font-weight: 400; }
.jp { position: relative; padding: 6px 10px; border-radius: 100px; background: var(--gloss); font: 600 13px/1 var(--sans); color: var(--ink); box-shadow: inset 0 1px 0 #fff; }
.jp::after { content: "✦"; position: absolute; right: -9px; top: -10px; font-size: 13px; color: #6fb2f5; }
.rsec { margin: 20px 22px 10px; font: 400 20px/1 var(--serif); }
.rtx { margin: 0 16px; border-radius: 22px; background: #fff; box-shadow: inset 0 0 0 1px rgba(12,26,59,.08); padding: 4px 14px; }
.txr { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px solid rgba(12,26,59,.07); }
.txr:last-child { border: 0; }
.mc { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; font: 600 11px/1 var(--sans); flex: none; }
.mc.ub { background: #000; color: #fff; } .mc.sp2 { background: #1ed760; color: #000; font-size: 15px; }
.txr .t { flex: 1; display: grid; gap: 2px; font: 500 15px/1.15 var(--sans); } .txr .t small { font: 400 12px/1 var(--sans); color: rgba(12,26,59,.4); }
.fr { font-style: normal; font-size: 9.5px; font-weight: 600; letter-spacing: .05em; padding: 3px 6px; border-radius: 6px; background: var(--gloss); margin-left: 4px; vertical-align: 1px; }
.txr .a { display: grid; justify-items: end; font: 500 15px/1.1 var(--sans); font-variant-numeric: tabular-nums; } .txr .a s { font-size: 11px; color: rgba(12,26,59,.4); }

.homebar { position: absolute; left: 50%; bottom: 8px; width: 136px; height: 5px; margin-left: -68px; border-radius: 3px; background: var(--ink); }

.shadow { width: 300px; height: 40px; margin-top: -14px; border-radius: 50%; background: radial-gradient(closest-side, rgba(12,26,59,.25), rgba(12,26,59,0)); filter: blur(8px); }

/* ─── responsive ─── */
@media (max-width: 1100px) { .sec { padding-inline: var(--gut); } .iphone { zoom: .72; } }
@media (max-width: 820px) {
  .brand img { width: 30px; } .brand span { font-size: 30px; } .pill { padding: 13px 22px; }
  .sec { grid-template-columns: 1fr; gap: 44px; padding: 116px var(--gut) 40px; align-items: start; }
  .h { font-size: clamp(44px, 12vw, 60px); }
  .sub { font-size: 18px; }
  .iphone { zoom: .8; }
  .foot { position: static; padding: 0 var(--gut) 24px; }
  .msg { min-height: 0; } .coming { margin-top: 14px; }
}
@media (max-width: 420px) {
  .join { flex-direction: column; border-radius: 28px; padding: 8px; }
  .join input { height: 48px; text-align: center; padding: 0 12px; }
  .go { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .01s !important; transition-delay: 0s !important; }
}