/* ── Tokens ── */
:root {
  --bg: #ffffff;
  --ink: #111111;
  --muted: #6b6b68;
  --dim: #9a9a96;
  --line: #e6e6e1;
  --pill: #efefeb;
  --card: #ffffff;
  --mark: #dbeafe;
  --blue: #7fb2ff;
  --green: #22c55e;
  --paper: #f7f3e8;
  --paper-line: #e9e3d2;

  --helv: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--helv);
  -webkit-font-smoothing: antialiased;
  text-align: center;
  overflow-x: hidden;
}
img, svg { display: block; }
.sr-only, .hp {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

main { position: relative; z-index: 1; padding: 0 16px; }

/* ── Hero ── */
.hero {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(72px, 12vh, 140px) 0 40px;
  display: flex; flex-direction: column; align-items: center;
}

.title {
  margin: 0;
  font-family: var(--helv);
  font-weight: 700;
  font-size: clamp(40px, 7.2vw, 80px);
  line-height: 1.02;
  letter-spacing: -2px;
  text-wrap: balance;
}

.sub {
  margin: 24px 0 0;
  max-width: 560px;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.55;
  color: var(--muted);
  text-wrap: balance;
}

/* Hero title: per-letter intro + hover pop */
.title--hero { cursor: default; }
.title--hero .word { display: inline-block; white-space: nowrap; }
.title--hero .ch {
  display: inline-block;
  transform-origin: 50% 80%;
  transform: translateY(var(--lift, 0px)) scale(var(--grow, 1));
  transition: transform .45s cubic-bezier(.34, 1.56, .64, 1), color .3s;
  will-change: transform;
}
.title--hero .ch.is-pop { animation: pop-letter .5s cubic-bezier(.34, 1.56, .64, 1); }
@keyframes pop-letter {
  0%   { transform: translateY(var(--lift, 0px)) scale(var(--grow, 1)); }
  35%  { transform: translateY(calc(var(--lift, 0px) + 3px)) scale(.9, 1.08); }
  70%  { transform: translateY(calc(var(--lift, 0px) - 4px)) scale(1.06, .96); }
  100% { transform: translateY(var(--lift, 0px)) scale(var(--grow, 1)); }
}
.js .title--hero .ch.is-hidden { opacity: 0; transform: translateY(.45em) rotateX(-60deg); filter: blur(6px); }
.title--hero .ch.is-entering { transition: opacity .7s var(--ease), transform .9s var(--ease), filter .7s var(--ease); }

/* Subtitle: soft 3D depth + slow light sweep */
.sub {
  background: linear-gradient(100deg, var(--muted) 0%, var(--muted) 40%, #1d1d1b 50%, var(--muted) 60%, var(--muted) 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 1px 0 rgba(255,255,255,1)) drop-shadow(0 2px 1px rgba(0,0,0,.08)) drop-shadow(0 8px 18px rgba(0,0,0,.10));
  animation: sweep 7s ease-in-out infinite;
  transition: filter .5s var(--ease), letter-spacing .6s var(--ease);
}
.sub:hover { filter: drop-shadow(0 1px 0 #fff) drop-shadow(0 3px 2px rgba(0,0,0,.12)) drop-shadow(0 12px 26px rgba(0,0,0,.16)); letter-spacing: .01em; }
@keyframes sweep { 0% { background-position: 100% 0; } 60%, 100% { background-position: 0% 0; } }

/* ── Signup form ── */
.signup {
  margin-top: 36px;
  width: 100%;
  max-width: 420px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.input {
  width: 100%;
  height: 52px;
  padding: 0 18px;
  font: 16px var(--helv);
  color: var(--ink);
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.input::placeholder { color: var(--dim); }
.input:hover { border-color: #d4d4ce; }
.input:focus { border-color: var(--ink); box-shadow: 0 0 0 4px rgba(17,17,17,.06); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 50px;
  padding: 0 34px;
  font-family: var(--helv);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .04em;
  text-transform: uppercase;
  text-decoration: none;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .2s;
}
.btn:hover { transform: translateY(-2px) scale(1.04); box-shadow: 0 10px 24px -8px rgba(0,0,0,.35); }
.btn:active { transform: scale(.97); box-shadow: none; transition-duration: .1s; }
.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.btn[disabled] { opacity: .6; pointer-events: none; }

.form-status {
  margin: 0;
  min-height: 1.2em;
  font: 13px/1.4 var(--mono);
  color: var(--muted);
}
.form-status.is-ok { color: #15803d; }
.form-status.is-err { color: #b91c1c; }

/* ── Social pills ── */
.socials {
  margin-top: 32px;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 12px;
}
.pill {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 18px 11px 15px;
  font-size: 16px;
  color: var(--ink);
  text-decoration: none;
  background: var(--pill);
  border-radius: 999px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), background .3s;
}
.pill svg { width: 26px; height: 26px; transition: transform .4s var(--ease); }
.pill:hover { transform: translateY(-3px); background: #fff; box-shadow: 0 12px 28px -12px rgba(0,0,0,.25); }
.pill:hover svg { transform: scale(1.15) rotate(-6deg); }
.pill:active { transform: translateY(0) scale(.97); }

/* ── Offer + count ── */
.offer {
  margin: 36px 0 0;
  max-width: 600px;
  font-weight: 700;
  font-size: clamp(18px, 1.9vw, 21px);
  line-height: 1.6;
  text-wrap: balance;
}
.offer mark {
  padding: 2px 6px;
  color: inherit;
  background: var(--mark);
  border-radius: 4px;
  box-decoration-break: clone; -webkit-box-decoration-break: clone;
}

.count {
  margin: 22px 0 0;
  display: inline-flex; align-items: center; gap: 10px;
  font: 13.5px var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.dot {
  position: relative;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
}
.dot::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: var(--green);
  animation: ping 2s var(--ease) infinite;
}
@keyframes ping { 0% { transform: scale(1); opacity: .6; } 100% { transform: scale(3); opacity: 0; } }

/* ── Download card ── */
.download-wrap {
  margin-top: 64px;
  width: 100%;
  max-width: 480px;
  display: flex; flex-direction: column; align-items: center;
}
.section-heading {
  margin: 0 0 20px;
  font-weight: 700;
  font-size: clamp(28px, 3.6vw, 38px);
  letter-spacing: -1.5px;
}
.download-aura { position: relative; width: 100%; }
.download-aura::before {
  content: "";
  position: absolute; inset: -12px;
  z-index: -1;
  border-radius: 32px;
  background: linear-gradient(135deg, #b8d4ff, #dbe9ff 50%, #a8cbff);
  filter: blur(26px);
  animation: breathe 6s ease-in-out infinite alternate;
  pointer-events: none;
}
.download-aura:hover::before { animation-play-state: paused; opacity: 1; transform: scale(1.06); }
@keyframes breathe { from { opacity: .55; transform: scale(.98); } to { opacity: .9; transform: scale(1.04); } }
.download {
  position: relative;
  width: 100%;
  max-width: 480px;
  padding: 28px 28px 24px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--helv);
  color: var(--ink);
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  cursor: pointer;
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--ty, 0));
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .3s;
  will-change: transform;
}
.download:hover { --ty: -4px; border-color: #d9d9d3; box-shadow: 0 24px 50px -24px rgba(0,0,0,.28); }
.download:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.download__label {
  display: inline-flex; align-items: center; gap: 7px;
  font: 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}
.download__label svg { width: 15px; height: 15px; }
.download__title { margin-top: 4px; font-weight: 700; font-size: 20px; letter-spacing: -.5px; }
.download__desc { max-width: 340px; font-size: 15px; line-height: 1.5; color: var(--muted); }
.download__cta {
  margin-top: 8px;
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 700; font-size: 15px;
}
.download__cta .arrow { display: inline-block; transition: transform .4s var(--ease); }
.download:hover .arrow { transform: translateX(5px); }

/* ── Latest YouTube ── */
.yt {
  max-width: 880px;
  margin: 0 auto;
  padding-top: clamp(72px, 10vh, 120px);
  display: flex; flex-direction: column; align-items: center;
}
.yt__card {
  position: relative;
  display: block;
  width: 100%;
  max-width: 600px;
  overflow: hidden;
  border-radius: 22px;
  background: #111;
  box-shadow: 0 24px 50px -24px rgba(0,0,0,.35);
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--ty, 0));
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
  will-change: transform;
}
.yt__card img { width: 100%; height: auto; transition: transform .8s var(--ease), filter .5s; }
.yt__card:hover { --ty: -6px; box-shadow: 0 40px 70px -28px rgba(0,0,0,.45); }
.yt__card:hover img { transform: scale(1.04); filter: brightness(.88); }
.yt__card:active { --ty: -2px; }
.yt__card:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.yt__play {
  position: absolute; top: 50%; left: 50%;
  width: 72px; height: 72px; margin: -36px 0 0 -36px;
  display: grid; place-items: center;
  color: #fff;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 50%;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transform: scale(.9);
  transition: transform .5s var(--ease), background .3s;
}
.yt__play svg { width: 28px; height: 28px; margin-left: 3px; }
.yt__card:hover .yt__play { transform: scale(1.08); background: #ff0033; border-color: #ff0033; }
.yt__badge {
  position: absolute; left: 16px; bottom: 16px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px 8px 10px;
  font-size: 14px; font-weight: 500; color: #fff;
  background: rgba(0,0,0,.5);
  border-radius: 999px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  opacity: 0; transform: translateY(6px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.yt__badge svg { width: 18px; height: 18px; }
.yt__card:hover .yt__badge { opacity: 1; transform: none; }
@media (hover: none) { .yt__badge { opacity: 1; transform: none; } }

/* ── Founders Note ── */
.note-section {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(80px, 12vh, 140px) 0 40px;
  display: flex; flex-direction: column; align-items: center;
}
.window {
  width: 100%;
  max-width: 820px;
  overflow: hidden;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,.25), 0 2px 6px rgba(0,0,0,.04);
  transform: perspective(1400px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(var(--ty, 0));
  transition: transform .6s var(--ease), box-shadow .6s var(--ease);
  will-change: transform;
}
.window-wrap { width: 100%; max-width: 820px; margin-top: 44px; }
.window:hover { --ty: -6px; box-shadow: 0 50px 100px -40px rgba(0,0,0,.3), 0 2px 6px rgba(0,0,0,.04); }
.window__bar {
  display: flex; gap: 7px;
  padding: 13px 16px;
  background: #f3f3f0;
  border-bottom: 1px solid var(--line);
}
.window__bar i { width: 11px; height: 11px; border-radius: 50%; background: #d8d8d3; transition: background .3s; }
.window:hover .window__bar i:nth-child(1) { background: #ff5f57; }
.window:hover .window__bar i:nth-child(2) { background: #febc2e; }
.window:hover .window__bar i:nth-child(3) { background: #28c840; }

.paper {
  --lh: 32px;
  padding: calc(var(--lh) * 1.5) clamp(22px, 6vw, 56px) calc(var(--lh) * 1.5);
  font: 400 clamp(14px, 1.7vw, 16.5px)/var(--lh) var(--mono);
  color: #1a1a1a;
  background-image: repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--lh) - 1px), var(--paper-line) calc(var(--lh) - 1px), var(--paper-line) var(--lh));
  background-position: 0 calc(var(--lh) * 1.5 - 5px);
}
.paper p { margin: 0 0 var(--lh); }
.signature { width: 160px; height: auto; margin-top: 4px; }

.note-section .signup { margin-top: 64px; }

/* ── Footer ── */
.footer {
  position: relative; z-index: 1;
  padding: 56px 16px 48px;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.footer__icons { display: flex; justify-content: center; gap: 22px; }
.footer__icons a { color: var(--muted); transition: color .3s, transform .4s var(--ease); }
.footer__icons a:hover { color: var(--ink); transform: translateY(-3px) scale(1.1); }
.footer__icons svg { width: 20px; height: 20px; }
.footer__copy { margin: 0; font: 12px var(--mono); letter-spacing: .08em; color: var(--dim); }

/* ── Modal ── */
.modal {
  width: min(420px, calc(100% - 32px));
  padding: 40px 28px 28px;
  color: var(--ink);
  text-align: center;
  background: var(--card);
  border: 0;
  border-radius: 22px;
  box-shadow: 0 40px 100px -20px rgba(0,0,0,.35);
}
.modal::backdrop { background: rgba(250,250,248,.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.modal[open] { animation: pop .45s var(--ease); }
.modal[open]::backdrop { animation: fade .3s ease; }
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.96); } }
@keyframes fade { from { opacity: 0; } }
.modal__close {
  position: absolute; top: 14px; right: 14px;
  width: 32px; height: 32px;
  font-size: 14px; color: var(--muted);
  background: var(--pill); border: 0; border-radius: 50%;
  cursor: pointer;
  transition: transform .3s var(--ease), color .2s;
}
.modal__close:hover { color: var(--ink); transform: rotate(90deg); }
.modal__title { margin: 0; font-weight: 700; font-size: 28px; letter-spacing: -1px; }
.modal__text { margin: 10px auto 0; max-width: 320px; font-size: 15px; line-height: 1.5; color: var(--muted); }
.signup--modal { margin: 24px auto 0; }
.check {
  margin: 0 auto 16px;
  width: 52px; height: 52px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 24px; color: #fff; background: var(--green);
  animation: pop .5s var(--ease);
}
.btn--download { margin-top: 24px; }

/* ── Scroll reveal ── */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal-scale { opacity: 0; transform: scale(.92) translateY(40px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.js .is-in { opacity: 1; transform: none; }

/* ── Small screens ── */
@media (max-width: 640px) {
  .yt__play { width: 60px; height: 60px; margin: -30px 0 0 -30px; }
  .br-desktop { display: none; }
  .title { letter-spacing: -1.5px; }
  .pill { font-size: 17px; padding: 13px 20px 13px 17px; }
  .pill svg { width: 22px; height: 22px; }
  .btn { width: 100%; }
  .paper { --lh: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal, .js .reveal-scale { opacity: 1; transform: none; }
}