/* Satoshi Millionaire · site
   Layout: a block explorer at 2am. One dark world (the game's), a 21-block chain as the
   recurring motif, violet/blue for mined blocks, bitcoin orange only for what you win. */
:root {
  --night: #0d0f1c;
  --panel: #161a2e;
  --panel-2: #1d2140;
  --line: #2a2f52;
  --ink: #eef0ff;
  --muted: #a3a8cc;
  --violet: #6d3fd6;
  --blue: #2d5fd0;
  --btc: #f7931a;
  --teal: #2dd4bf;
  --ok: #2fbf71;
  --display: "Chakra Petch", "Arial Narrow", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --wrap: 1120px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--night); color: var(--ink); font: 17px/1.6 var(--body); -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; display: block; }
a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--btc); }
:focus-visible { outline: 2px solid var(--btc); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.05; margin: 0; text-wrap: balance; }
p { margin: 0; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding-inline: 20px; }
.eyebrow { font: 600 12px/1.4 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.muted { color: var(--muted); }

/* header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(13, 15, 28, .86); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(42, 47, 82, .6); }
.top .wrap { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 18px/1 var(--display); letter-spacing: .02em; }
.brand img { width: 34px; height: 34px; }
.brand b { color: var(--btc); font-weight: 700; }
.nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav a { text-decoration: none; color: var(--muted); font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--ink); }
.nav .btn { color: var(--night); white-space: nowrap; }
@media (max-width: 420px) { .brand { font-size: 16px; } .brand img { width: 28px; height: 28px; } }
@media (max-width: 760px) { .nav a:not(.btn) { display: none; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 10px 20px; border-radius: 12px; border: 1px solid transparent; font: 700 16px/1.1 var(--display); letter-spacing: .03em; text-transform: uppercase; text-decoration: none; cursor: pointer; transition: transform .12s, box-shadow .2s, background .2s; }
.btn:active { transform: translateY(2px); }
.btn-btc { background: var(--btc); color: #1d0e00; box-shadow: 0 5px 0 #b3620a, 0 12px 30px rgba(247, 147, 26, .25); }
.btn-btc:hover { color: #1d0e00; box-shadow: 0 5px 0 #b3620a, 0 14px 38px rgba(247, 147, 26, .4); }
.btn-sm { min-height: 38px; padding: 8px 14px; font-size: 14px; box-shadow: 0 3px 0 #b3620a; }
.store { display: inline-flex; align-items: center; gap: 12px; min-height: 56px; padding: 8px 16px 8px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); text-decoration: none; text-align: left; cursor: pointer; font: inherit; }
.store svg { width: 26px; height: 26px; flex: none; fill: currentColor; }
.store small { display: block; font: 500 11px/1.3 var(--mono); letter-spacing: .06em; color: var(--muted); text-transform: uppercase; }
.store b { display: block; font: 700 17px/1.2 var(--display); }
.store:hover { border-color: #4a5190; color: var(--ink); }
.store.primary { background: linear-gradient(135deg, var(--violet), var(--blue)); border-color: transparent; box-shadow: 0 10px 30px rgba(77, 70, 220, .35); }
.store.primary small { color: rgba(255, 255, 255, .78); }
.store.soon { opacity: .8; }
.downloads { display: flex; flex-wrap: wrap; gap: 12px; }
@media (max-width: 560px) { .downloads .store { flex: 1 1 100%; } }

/* the chain motif */
.chain { display: grid; grid-template-columns: repeat(21, minmax(0, 1fr)); gap: 4px; max-width: 560px; }
.chain i { position: relative; aspect-ratio: 1; border-radius: 4px; background: var(--panel-2); border: 1px solid var(--line); }
.chain i.m { background: linear-gradient(135deg, var(--violet), var(--blue)); border-color: transparent; animation: mine .5s both; }
.chain i.ad { background: rgba(45, 212, 191, .16); border-color: var(--teal); }
.chain i.top { border-color: var(--btc); background: rgba(247, 147, 26, .16); }
.chain i.safe::after { content: ""; position: absolute; left: 50%; top: -7px; width: 7px; height: 7px; background: var(--btc); transform: translateX(-50%) rotate(45deg); }
@keyframes mine { from { transform: scale(.4); filter: brightness(2.2); } to { transform: none; filter: none; } }

/* hero */
.hero { position: relative; overflow: hidden; padding-block: 56px 72px; }
.hero::before { content: ""; position: absolute; inset: -30% -10% auto 40%; height: 720px; background: radial-gradient(closest-side, rgba(109, 63, 214, .35), transparent 70%); pointer-events: none; }
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 48px; align-items: center; }
.hero-copy { display: grid; gap: 24px; min-width: 0; }
.hero h1 { font-size: clamp(40px, 6vw, 74px); letter-spacing: -.01em; text-transform: uppercase; }
.hero h1 span { display: block; color: var(--btc); }
.hero .lede { font-size: 20px; color: #c9cdea; max-width: 34ch; }
.hero .fine { font: 500 13px/1.5 var(--mono); color: var(--muted); }
.phone { justify-self: center; width: min(320px, 78vw); aspect-ratio: 540 / 1168; border-radius: 44px; padding: 10px; background: linear-gradient(160deg, #2b3056, #121528); box-shadow: 0 0 0 1px #3a4078, 0 40px 90px rgba(0, 0, 0, .6), 0 0 120px rgba(109, 63, 214, .35); max-width: 100%; }
.phone video { width: 100%; height: 100%; object-fit: cover; border-radius: 35px; background: #0d0f1c url(assets/gameplay-poster.jpg) center / cover no-repeat; }
@media (max-width: 860px) {
  .hero { padding-block: 32px 48px; }
  .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .phone { width: min(280px, 72vw); }
}

/* challenge banner */
.challenge { display: grid; gap: 6px; padding: 16px 18px; border-radius: 14px; border: 1px solid rgba(247, 147, 26, .5); background: linear-gradient(135deg, rgba(247, 147, 26, .16), rgba(247, 147, 26, .04)); }
.challenge b { font: 700 22px/1.2 var(--display); }
.challenge .open { justify-self: start; }

/* sections */
section { padding-block: 72px; }
section + section { border-top: 1px solid rgba(42, 47, 82, .55); }
.sec-head { display: grid; gap: 12px; max-width: 62ch; margin-bottom: 36px; }
.sec-head h2 { font-size: clamp(32px, 4.6vw, 52px); text-transform: uppercase; }
.sec-head p { color: #c9cdea; font-size: 18px; }

/* the ladder */
.ladder { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 10px; }
.rung { position: relative; display: grid; gap: 4px; padding: 12px 10px 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); min-width: 0; }
.rung .n { font: 600 11px var(--mono); letter-spacing: .1em; color: var(--muted); }
.rung .v { font: 700 18px/1.1 var(--display); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.rung .tag { font: 600 10px/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.rung.q { background: linear-gradient(160deg, rgba(109, 63, 214, .22), rgba(45, 95, 208, .1)); }
.rung.ad { border-color: rgba(45, 212, 191, .6); background: rgba(45, 212, 191, .07); }
.rung.ad .v, .rung.ad .tag { color: var(--teal); }
.rung.safe { border-color: rgba(247, 147, 26, .7); }
.rung.safe .tag { color: var(--btc); }
.rung.top { border-color: var(--btc); background: linear-gradient(160deg, rgba(247, 147, 26, .3), rgba(247, 147, 26, .06)); }
.rung.top .v { color: var(--btc); }
.legend { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 18px; font-size: 15px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
@media (max-width: 760px) { .ladder { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* lifelines & features */
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 860px) { .grid3 { grid-template-columns: minmax(0, 1fr); } }
.tile { display: grid; gap: 10px; align-content: start; padding: 22px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); min-width: 0; }
.tile .icon { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: var(--panel-2); font: 700 17px var(--display); color: var(--ink); }
.tile .icon svg { width: 24px; height: 24px; }
.tile h3 { font-size: 24px; text-transform: uppercase; }
.tile p { color: #c9cdea; }
.tile .foot { font: 500 13px/1.5 var(--mono); color: var(--muted); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
@media (max-width: 860px) { .split { grid-template-columns: minmax(0, 1fr); gap: 28px; } }
.boards { display: grid; gap: 10px; }
.board { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 16px; align-items: baseline; padding: 16px 18px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line); }
.board b { font: 700 18px var(--display); text-transform: uppercase; }
.board p { color: #c9cdea; }
@media (max-width: 480px) { .board { grid-template-columns: minmax(0, 1fr); gap: 4px; } }

.cats { display: flex; flex-wrap: wrap; gap: 8px; }
.cats span { padding: 7px 12px; border-radius: 99px; border: 1px solid var(--line); background: var(--panel); font-size: 14px; }
.stat { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.stat b { font: 700 64px/1 var(--display); color: var(--btc); font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); }

/* faq */
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); padding: 0 18px; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 0; font: 700 18px/1.3 var(--display); display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--btc); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 18px; color: #c9cdea; }

/* waitlist & contact */
.cta-box { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 36px; padding: 36px; border-radius: 22px; background: linear-gradient(145deg, #1b1f3d, #12152a); border: 1px solid var(--line); }
@media (max-width: 860px) { .cta-box { grid-template-columns: minmax(0, 1fr); padding: 24px; } }
form { display: grid; gap: 12px; }
label { display: grid; gap: 6px; font: 600 13px var(--mono); letter-spacing: .04em; color: var(--muted); }
input[type=email], select { width: 100%; min-height: 50px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); background: #0b0d19; color: var(--ink); font: 16px var(--body); }
.check { display: flex; gap: 10px; align-items: flex-start; font: 400 15px/1.45 var(--body); letter-spacing: 0; color: #c9cdea; }
.check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--btc); flex: none; }
.form-msg { min-height: 1.4em; font-size: 15px; }
.form-msg.ok { color: var(--ok); }
.form-msg.err { color: #ff9a9d; }
.email-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.email-row code { font: 600 17px var(--mono); padding: 10px 14px; border-radius: 10px; background: #0b0d19; border: 1px solid var(--line); user-select: all; overflow-wrap: anywhere; }
.copy { min-height: 44px; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel-2); color: var(--ink); font: 600 14px var(--body); cursor: pointer; }

/* footer */
footer { border-top: 1px solid var(--line); padding-block: 36px 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: grid; gap: 18px; }
footer .links { display: flex; flex-wrap: wrap; gap: 10px 22px; }
footer .links a { color: #c9cdea; text-decoration: none; }
footer .links a:hover { color: var(--btc); }

/* legal pages */
.doc { max-width: 760px; padding-block: 48px 72px; }
.doc h1 { font-size: clamp(36px, 6vw, 56px); text-transform: uppercase; margin-bottom: 8px; }
.doc .updated { font: 500 13px var(--mono); color: var(--muted); margin-bottom: 32px; }
.doc h2 { font-size: 24px; margin: 40px 0 12px; text-transform: uppercase; }
.doc h3 { font-size: 18px; margin: 24px 0 8px; }
.doc p, .doc li { color: #d3d6ef; }
.doc p + p { margin-top: 12px; }
.doc ul { padding-left: 22px; display: grid; gap: 6px; margin: 10px 0; }
.doc .box { padding: 16px 18px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line); margin: 16px 0; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc th, .doc td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font: 600 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.table-scroll { overflow-x: auto; }

/* trailer */
.linkbtn { background: none; border: 0; padding: 0; color: var(--ink); font: inherit; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.linkbtn:hover { color: var(--btc); }
dialog#trailer { padding: 12px; border: 1px solid var(--line); border-radius: 22px; background: var(--panel); color: var(--ink); width: min(420px, calc(100vw - 32px)); }
dialog#trailer::backdrop { background: rgba(5, 6, 14, .82); }
dialog#trailer video { width: 100%; aspect-ratio: 9 / 16; border-radius: 14px; background: var(--night); }
dialog#trailer .copy { display: block; margin: 10px auto 0; }

/* hero trailer */
.trailer-frame { position: relative; justify-self: center; width: min(360px, 80vw); max-width: 100%; aspect-ratio: 9 / 16; border-radius: 28px; overflow: hidden; background: var(--night); box-shadow: 0 0 0 1px var(--line), 0 40px 90px rgba(0, 0, 0, .55), 0 0 140px rgba(109, 63, 214, .35); }
.trailer-frame video { width: 100%; height: 100%; object-fit: cover; }
.sound { position: absolute; right: 12px; bottom: 12px; min-height: 40px; padding: 8px 14px; border-radius: 99px; border: 1px solid rgba(255,255,255,.25); background: rgba(13, 15, 28, .7); color: var(--ink); font: 600 13px var(--mono); letter-spacing: .06em; cursor: pointer; backdrop-filter: blur(6px); }
.sound:hover { border-color: var(--btc); }
@media (max-width: 860px) { .trailer-frame { width: min(300px, 76vw); } }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: s; display: grid; gap: 16px; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 14px; color: #c9cdea; }
.steps li::before { content: counter(s); width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: linear-gradient(135deg, var(--violet), var(--blue)); font: 700 18px var(--display); color: #fff; }
.steps b { color: var(--ink); }
#how .phone { justify-self: center; }
textarea { width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line); background: #0b0d19; color: var(--ink); font: 16px/1.5 var(--body); resize: vertical; }
input[type=text] { width: 100%; min-height: 50px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); background: #0b0d19; color: var(--ink); font: 16px var(--body); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* social proof */
.faces { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; color: var(--ink); justify-self: start; }
.faces .stack { display: flex; }
.faces .fc { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; border: 3px solid var(--night); background: var(--panel-2); display: grid; place-items: center; font: 700 16px var(--display); color: var(--ink); }
.faces .fc + .fc { margin-left: -12px; }
.faces small { display: block; font: 500 13px/1.4 var(--mono); color: var(--muted); }
.faces:hover small { color: var(--btc); }
.stars { color: var(--btc); letter-spacing: 2px; font-size: 16px; }
.stars .off { color: #3a4078; }
.reviews { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
@media (max-width: 860px) { .reviews { grid-template-columns: minmax(0, 1fr); } }
.review { margin: 0; display: grid; gap: 14px; align-content: start; padding: 22px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); min-width: 0; }
.review blockquote { margin: 0; color: #d3d6ef; font-size: 17px; }
.review figcaption { display: grid; gap: 2px; }
.review figcaption b { font: 700 17px var(--display); }
.review figcaption span { color: var(--muted); font-size: 14px; }
.rv-face { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; background: var(--panel-2); display: grid; place-items: center; font: 700 20px var(--display); color: var(--ink); }
.rv-photo { display: flex; align-items: center; gap: 16px; }
.rv-photo img { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; }
.rv-photo .rv-face { width: 72px; height: 72px; }
.rv-stars { border: 0; padding: 0; margin: 0; display: flex; flex-direction: row-reverse; justify-content: flex-end; gap: 4px; }
.rv-label { font: 600 13px var(--mono); letter-spacing: .04em; color: var(--muted); margin-bottom: -6px; }
.rv-stars input { position: absolute; opacity: 0; }
.rv-stars label { font-size: 34px; color: #3a4078; cursor: pointer; letter-spacing: 0; }
.rv-stars input:checked ~ label, .rv-stars label:hover, .rv-stars label:hover ~ label { color: var(--btc); }
.rv-stars input:focus-visible + label { outline: 2px solid var(--btc); border-radius: 4px; }