/* Cryptathon site — one stylesheet for the landing page and the legal pages.
   The app's rules carry over to the web (apps/game-app/DESIGN.md): light ground,
   Action Indigo only on things you can act on, gain/loss only on price, hairlines
   instead of shadows, tabular figures on every number. The plan for this page and
   the choices it rejects are in DESIGN.md next to this file. */

:root{
  --ground:#FFFFFF;
  --surface:#F7F8FA;      /* the two tinted bands */
  --near-ground:#FCFCFD;  /* the order book's mid strip */
  --ink:#0F1115;
  --muted:#656B7C;        /* 5.3:1 on white; the only secondary text colour */
  --hairline:#ECEEF3;
  --hairline-deep:#DFE2EA;/* the same hairline one step darker, for tinted grounds */

  --indigo:#4F46E5;       /* interactivity. Nothing else. */
  --indigo-hover:#4036D8;
  --indigo-tint:#F6F5FF;
  --indigo-line:#E2DEFF;

  --gain:#0E8148; --gain-bar:#C4E4D3;   /* price direction and side. Nothing else. */
  --loss:#C2372C; --loss-bar:#F4CBC5;

  --disabled-fill:#DFE2EA; --disabled-text:#767C8B;

  --col:1120px; --col-narrow:680px; --gutter:20px;
  --edge:max(var(--gutter), calc((100% - var(--col)) / 2));
  --r-sm:10px; --r-md:14px; --r-phone:26px;
  --header-h:64px;
  --sec-y:56px;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-std:cubic-bezier(.2,0,0,1);
  color-scheme:light;
}
@media (min-width:900px){:root{--gutter:32px;--sec-y:88px}}

*{box-sizing:border-box;min-width:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{
  margin:0;background:var(--ground);color:var(--ink);
  font-family:Archivo,system-ui,sans-serif;font-weight:500;font-size:16px;line-height:1.6;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
@media (min-width:760px){body{font-size:17px}}
img,svg{display:block;max-width:100%}
h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit}
[hidden]{display:none !important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--indigo);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:8px;z-index:20;padding:10px 16px;background:var(--ink);color:#fff;border-radius:var(--r-sm);font-weight:700;text-decoration:none}
.skip:focus{left:12px}
.wrap{width:min(100% - (var(--gutter) * 2), var(--col));margin-inline:auto}
.wrap-narrow{width:min(100% - (var(--gutter) * 2), var(--col-narrow));margin-inline:auto}

h1{font-size:clamp(42px,9vw,72px);font-weight:800;line-height:1.0;letter-spacing:-.035em;text-wrap:balance}
h2{font-size:clamp(30px,4.4vw,42px);font-weight:800;line-height:1.08;letter-spacing:-.03em;text-wrap:balance;max-width:20ch}
h3{font-size:20px;font-weight:800;line-height:1.25;letter-spacing:-.02em}
.deck{margin-top:14px;font-size:clamp(17px,1.5vw,20px);line-height:1.5;color:var(--muted);max-width:56ch}
.fine{margin-top:16px;font-size:14px;line-height:1.5;color:var(--muted);max-width:44ch}

/* ---- header ---- */
.site-header{position:sticky;top:0;z-index:10;background:var(--ground);border-bottom:1px solid var(--hairline)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:var(--header-h)}
.masthead{display:flex;align-items:center;gap:9px;text-decoration:none}
.masthead img{width:26px;height:26px}
.wordmark{font-size:17px;font-weight:800;letter-spacing:-.03em}
.nav{display:none;gap:26px}
.nav a{text-decoration:none;font-size:15px;font-weight:600;color:var(--muted);transition:color 140ms var(--ease-std)}
.nav a:hover{color:var(--ink)}
@media (min-width:880px){.nav{display:flex}}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:inherit;font-weight:800;font-size:16px;line-height:1;min-height:48px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background-color 140ms var(--ease-std),border-color 140ms var(--ease-std)}
.btn-primary{background:var(--indigo);color:#fff}
.btn-primary:hover{background:var(--indigo-hover)}
.btn-primary:focus-visible{outline-color:var(--ink)}
.btn-primary:disabled{background:var(--disabled-fill);color:var(--disabled-text);cursor:default}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--hairline-deep)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-sm{min-height:40px;font-size:14px;padding:0 14px}
@media (min-width:520px){.btn-sm{font-size:15px;padding:0 16px}}

/* ---- sections ---- */
main > section{padding:var(--sec-y) 0}
main > section[id]{scroll-margin-top:calc(var(--header-h) + 16px)}
.section-head{padding-bottom:26px;border-bottom:1px solid var(--hairline);margin-bottom:36px}

/* ---- hero ---- */
.hero{padding-top:44px}
.hero-grid{display:grid;gap:40px;align-items:start}
@media (min-width:960px){
  .hero{padding-top:72px}
  .hero-grid{grid-template-columns:minmax(0,1.06fr) minmax(340px,.94fr);gap:64px;align-items:stretch}
  /* the exchange is unreachable: the hero becomes one typographic column and the
     copy widens rather than sitting against an empty half-page */
  .hero-grid.no-book{grid-template-columns:minmax(0,1fr)}
  .no-book h1{max-width:14ch}
  .no-book .deck{max-width:62ch}
  .book{align-self:start}
  /* Both halves start on the same line and the copy column simply ends after the
     fine print. The ladder being the taller column is fine; pinning the closing
     line to the bottom of the copy instead opened a hole in the middle. */
}
.hero h1{max-width:11ch}
.hero .deck{max-width:46ch}

.beta-form{margin-top:30px;display:grid;grid-template-columns:1fr;gap:10px;max-width:480px}
@media (min-width:560px){.beta-form{grid-template-columns:1fr auto}}
.beta-email{min-height:48px;padding:0 14px;border:1.5px solid var(--hairline-deep);border-radius:var(--r-sm);font:inherit;font-size:16px;font-weight:500;color:var(--ink);background:var(--ground)}
.beta-email::placeholder{color:var(--muted);opacity:1}
.beta-email:focus{border-color:var(--indigo);outline:none}
.beta-email:focus-visible{outline:2px solid var(--indigo);outline-offset:2px}
.beta-confirmed{margin-top:20px;font-size:18px;font-weight:700}
.beta-error{margin-top:10px;font-size:15px;color:var(--loss);min-height:1em}
.store-badges{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap}
.store-badge{display:inline-flex;align-items:center;min-height:48px;padding:0 18px;border-radius:var(--r-sm);background:var(--ink);color:#fff;font-weight:700;text-decoration:none}

/* ---- the live book: the one bordered object on the page ---- */
.book-panel{border:1px solid var(--hairline);border-radius:var(--r-md);background:var(--ground);overflow:hidden}
.book-note{margin-top:14px;font-size:14.5px;line-height:1.5;color:var(--muted);max-width:44ch}
.no-js .book{display:none}
@media (min-width:960px){.no-js .hero-grid{grid-template-columns:minmax(0,1fr)}}

.markets{display:grid}
.tick-row{display:grid;grid-template-columns:46px 1fr auto;align-items:baseline;gap:12px;width:100%;padding:11px 15px;background:none;border:0;border-bottom:1px solid var(--hairline);text-align:left;cursor:pointer;transition:background-color 140ms var(--ease-std)}
.tick-row:hover{background:var(--surface)}
.tick-row[aria-pressed="true"]{background:var(--indigo-tint);border-bottom-color:var(--indigo-line)}
.tick-sym{font-size:14px;font-weight:800;letter-spacing:-.01em;color:var(--muted)}
.tick-row[aria-pressed="true"] .tick-sym{color:var(--indigo)}
.tick-price{font-size:17px;font-weight:700;letter-spacing:-.02em}
.tick-change{font-size:13.5px;font-weight:600;color:var(--muted)}
.tick-row.up .tick-change{color:var(--gain)}
.tick-row.down .tick-change{color:var(--loss)}
.tick-row.dip .tick-price{animation:dip 320ms var(--ease-std)}
@keyframes dip{0%{opacity:.35}100%{opacity:1}}

.ladder{position:relative;padding:4px 0 6px}
.ladder-head{display:flex;justify-content:space-between;padding:8px 15px 6px;font-size:12.5px;font-weight:600;color:var(--muted)}
.ladder-head-bids{padding-top:6px;padding-bottom:4px}
.levels{display:grid}
/* price | depth | size. The bar is the level's size drawn to scale against the
   largest size on show, which is why the middle of the row is not empty. */
.lv{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;height:27px;padding:0 15px}
.lv-bar{justify-self:end;width:0;height:10px;border-radius:3px 0 0 3px;transition:width 160ms var(--ease-std)}
.asks .lv-bar{background:var(--loss-bar)}
.bids .lv-bar{background:var(--gain-bar)}
.lv-price,.lv-size{font-size:15px;font-weight:700;letter-spacing:-.015em}
.lv-price.ask{color:var(--loss)}
.lv-price.bid{color:var(--gain)}
.lv-size{font-weight:600;color:var(--muted)}
/* narrow screens show five levels a side, always the five nearest the spread */
@media (max-width:560px){.asks .lv:nth-child(-n+1),.bids .lv:nth-child(n+6){display:none}}

.mid{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:6px 0;padding:12px 15px;background:var(--near-ground);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline)}
.mid-label{display:block;font-size:12.5px;font-weight:600;color:var(--muted)}
.mid-price{font-size:26px;font-weight:800;letter-spacing:-.03em;line-height:1.15}
.mid-side{margin-left:8px;font-size:14px;font-weight:700}
.mid-price.up,.mid-side.up{color:var(--gain)}
.mid-price.down,.mid-side.down{color:var(--loss)}
.mid-spread{text-align:right}
.mid-value{font-size:17px;font-weight:700;letter-spacing:-.02em}

.book-status{position:absolute;inset:0;display:grid;place-items:center;background:var(--ground);font-size:15px;color:var(--muted)}

/* the page's one authored moment: the ladder fills outward from the spread, once */
.book.is-first-paint .lv{animation:level-in 300ms var(--ease-out) both;animation-delay:calc(var(--i) * 32ms)}
@keyframes level-in{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}

/* ---- how it works ----
   One unbroken hairline runs through all three steps with a node at each one, so
   the rail itself carries the sequence and no 01 / 02 / 03 numerals are needed.
   It runs down the left on a phone and across the top on a wide screen. */
.steps{position:relative;display:grid;padding-left:30px}
.steps::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:1px;background:var(--hairline)}
.steps li{position:relative}
.steps li + li{margin-top:30px}
.steps li::before{content:"";position:absolute;top:8px;left:-34px;width:9px;height:9px;border-radius:50%;background:var(--ink)}
.steps p{margin-top:10px;color:var(--muted);max-width:44ch}
@media (min-width:820px){
  .steps{grid-template-columns:repeat(3,1fr);padding:44px 0 0}
  .steps::before{left:0;right:0;top:18px;bottom:auto;width:auto;height:1px}
  .steps li{padding:0 36px 0 0}
  .steps li + li{margin-top:0;padding-left:36px}
  .steps li::before{top:-30px;left:0}
  .steps li + li::before{left:36px}
}

/* ---- screens ---- */
.screens{background:var(--surface);border-top:1px solid var(--hairline)}
.screens .section-head{border-bottom-color:var(--hairline-deep)}
.screens-track{display:flex;gap:20px;overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scroll-padding-inline:var(--edge);padding:0 var(--edge) 12px;scrollbar-width:thin}
.screens-track figure{flex:0 0 200px;scroll-snap-align:start}
.screens-track figcaption{margin-top:16px;padding-top:14px;border-top:1px solid var(--hairline-deep);font-size:14.5px;line-height:1.45;color:var(--muted)}
@media (min-width:900px){.screens-track{gap:26px}.screens-track figure{flex-basis:224px}}
.phone{display:block;background:var(--ink);border-radius:var(--r-phone);padding:5px}
.phone img{width:100%;height:auto;aspect-ratio:390 / 844;object-fit:cover;object-position:top;border-radius:21px;background:var(--surface)}

/* ---- the rules: a rulebook, not four cards ---- */
.rules{border-top:1px solid var(--hairline)}
.rule-list > div{display:grid;gap:6px;padding:20px 0;border-top:1px solid var(--hairline)}
.rule-list > div:last-child{border-bottom:1px solid var(--hairline)}
.rule-list dt{font-size:19px;font-weight:800;letter-spacing:-.02em}
.rule-list dd{margin:0;color:var(--muted);max-width:64ch}
@media (min-width:760px){
  .rule-list > div{grid-template-columns:minmax(180px,1fr) 2.4fr;gap:40px;padding:22px 0}
}

/* ---- faq ---- */
.faq .section-head,.faq-list{max-width:780px}
.faq details{border-bottom:1px solid var(--hairline)}
.faq details:first-child{border-top:1px solid var(--hairline)}
.faq summary{display:flex;gap:20px;justify-content:space-between;align-items:center;padding:18px 0;cursor:pointer;font-size:18px;font-weight:700;letter-spacing:-.015em;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:14px;height:14px;background-image:linear-gradient(var(--muted),var(--muted)),linear-gradient(var(--muted),var(--muted));background-size:14px 1.5px,1.5px 14px;background-position:center,center;background-repeat:no-repeat}
.faq details[open] summary::after{background-image:linear-gradient(var(--muted),var(--muted));background-size:14px 1.5px}
.faq summary:hover{color:var(--indigo)}
.faq details p{margin-top:-2px;padding-bottom:22px;max-width:66ch;color:var(--muted)}

/* ---- close ---- */
.final{background:var(--surface);border-top:1px solid var(--hairline)}
.final-inner{max-width:640px}
.final .beta-email{border-color:var(--hairline-deep);background:var(--ground)}

/* ---- footer ---- */
.footer{border-top:1px solid var(--hairline);padding:28px 0 44px;color:var(--muted);font-size:14px}
.footer .wrap{display:grid;gap:14px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px}
.footer-links a{text-decoration:none;color:var(--muted);transition:color 140ms var(--ease-std)}
.footer-links a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
@media (min-width:880px){
  .footer .wrap{display:flex;flex-wrap:wrap;gap:14px 32px;align-items:center;justify-content:space-between}
}

/* ---- legal pages ---- */
.legal{padding:56px 0 88px}
.legal h1{font-size:clamp(32px,6vw,46px);max-width:none}
.legal .updated{margin-top:12px;color:var(--muted);font-size:15px}
.legal h2{margin-top:48px;padding-top:24px;border-top:1px solid var(--hairline);font-size:22px;letter-spacing:-.02em;line-height:1.3;max-width:none}
.legal p,.legal li{margin-top:14px;line-height:1.65;max-width:70ch}
.legal ul{list-style:disc;padding-left:22px}
.legal ol{list-style:decimal;padding-left:22px}
.legal li::marker{color:var(--muted)}
.legal .callout{margin-top:26px;padding:18px 20px;border:1px solid var(--hairline);background:var(--surface);border-radius:var(--r-md);font-weight:600}
.legal .callout p{margin-top:0}
.legal a{color:var(--indigo);text-underline-offset:3px}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}