/* Home page, "Airmail": the page is an envelope, the hero is a playable compass over a map,
   then postcards (screenshots) and stamps (features). Colours and faces follow the game. */
:root{
  --paper:#f4ecdc; --card:#fffaf0; --ink:#1d2440; --red:#d8432f; --blue:#2a55c8; --mustard:#f2b632; --sea:#bcd9e6; --green:#1f8a4c; --muted:#6b6559;
  --f-script:"Fraunces",Georgia,serif; --f-display:"Big Shoulders Display","Arial Narrow",Impact,sans-serif;
  --f-body:"Barlow",system-ui,sans-serif; --f-label:"Barlow Condensed","Arial Narrow",sans-serif; --f-mono:"DM Mono",ui-monospace,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{background:var(--paper);overflow-x:clip}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.55 var(--f-body);overflow-x:clip;
  background-image:radial-gradient(rgba(29,36,64,.05) 1px,transparent 1.2px);background-size:7px 7px}
.envelope{position:fixed;inset:0;pointer-events:none;z-index:50;border:9px solid transparent;
  border-image:repeating-linear-gradient(-45deg,var(--red) 0 16px,var(--paper) 16px 24px,var(--blue) 24px 40px,var(--paper) 40px 48px) 9}
.wrap{max-width:1120px;margin:0 auto;padding-inline:max(24px,env(safe-area-inset-left,0px)) max(24px,env(safe-area-inset-right,0px))}
a{color:var(--blue)}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}

header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:26px 8px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}
.brand img{width:44px;height:44px;border-radius:11px;border:2px solid var(--ink)}
.brand span{font:800 15px var(--f-label);letter-spacing:.22em;text-transform:uppercase}
.lang{display:flex;border:2px solid var(--ink);border-radius:999px;overflow:hidden;background:var(--card);box-shadow:2px 2px 0 var(--ink)}
.lang a{padding:6px 12px;font:700 13px var(--f-label);letter-spacing:.12em;color:var(--ink);text-decoration:none}
.lang a[aria-current="true"]{background:var(--ink);color:var(--paper)}

/* hero */
.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding-block:28px 56px}
.wordmark{margin:0}
.wordmark .c{display:block;font:italic 800 clamp(56px,8vw,104px)/1.08 var(--f-script);letter-spacing:-.01em;position:relative;z-index:1}
.wordmark .p{display:block;font:900 clamp(92px,14vw,180px)/.8 var(--f-display);color:var(--red);letter-spacing:.01em;
  text-shadow:4px 4px 0 var(--ink);-webkit-text-stroke:2px var(--ink)}
.kicker{font:500 13px var(--f-mono);letter-spacing:.32em;text-transform:uppercase;margin:18px 0 0;color:var(--muted)}
.lead{font-size:1.15rem;max-width:34ch;margin:18px 0 26px;text-wrap:pretty}
.free{font:600 14px var(--f-label);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:14px}

/* store buttons */
.stores{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.stores .row{display:flex;flex-wrap:wrap;gap:14px}
.store{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--paper);background:var(--ink);
  border:2px solid var(--ink);border-radius:14px;padding:12px 22px 12px 16px;box-shadow:5px 5px 0 var(--red);transition:transform .15s,box-shadow .15s}
.store:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--red)}
.store:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--red)}
.store svg{width:30px;height:30px;flex:none}
.store span{display:flex;flex-direction:column;line-height:1.05}
.store small{font:500 12px var(--f-body);opacity:.85}
.store b{font:800 24px var(--f-label);letter-spacing:.02em}
.store.android{box-shadow:5px 5px 0 var(--blue)}
.alt{font:600 14px var(--f-body);color:var(--ink);text-decoration:underline;text-decoration-color:var(--red);text-underline-offset:3px}
.qr{display:flex;align-items:center;gap:14px;margin-top:18px;max-width:330px}
.qr .code{width:96px;height:96px;padding:7px;background:var(--card);border:2px solid var(--ink);border-radius:10px;flex:none}
.qr .code svg{display:block;width:100%;height:100%}
.qr p{margin:0;font-size:14px;color:var(--muted)}
/* which buttons show is decided by the visitor's device: html[data-platform] */
html[data-platform="ios"] .stores .android:not(.alt), html[data-platform="android"] .stores .ios:not(.alt){display:none}
html[data-platform="desktop"] .stores .alt, html[data-platform="ios"] .stores .alt.ios, html[data-platform="android"] .stores .alt.android{display:none}
html:not([data-platform="desktop"]) .qr{display:none}

/* playable compass */
.game{position:relative;background:var(--card);border:2px solid var(--ink);border-radius:22px;box-shadow:8px 8px 0 var(--ink);padding:18px 18px 20px;overflow:hidden}
.ticket{display:flex;justify-content:space-between;align-items:stretch;border:2px solid var(--ink);border-radius:12px;overflow:hidden;position:relative;background:var(--card)}
.ticket::before{content:"";position:absolute;inset:0 0 auto;height:6px;background:repeating-linear-gradient(-45deg,var(--red) 0 8px,transparent 8px 12px,var(--blue) 12px 20px,transparent 20px 24px)}
.ticket .l{padding:14px 14px 10px;min-width:0}
.ticket .from{font:700 12px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;display:flex;align-items:center;gap:6px}
.ticket .from i{width:10px;height:10px;border-radius:50%;background:var(--red);display:inline-block}
.ticket .to{display:flex;flex-wrap:wrap;align-items:baseline;gap:0 8px;font:900 34px/1 var(--f-display);text-transform:uppercase;letter-spacing:.02em}
.ticket .to.long{font-size:26px}
.ticket .to em{font:italic 600 20px var(--f-script);color:var(--red);text-transform:none}
.ticket .r{border-left:2px dashed var(--ink);padding:14px 14px 10px;text-align:center;min-width:86px}
.ticket .r b{display:block;font:900 30px/1 var(--f-display);font-variant-numeric:tabular-nums}
.ticket .r small{font:700 10px var(--f-mono);letter-spacing:.2em}
.dial{position:relative;margin:16px auto 6px;width:min(100%,360px);aspect-ratio:1;max-width:100%;touch-action:none;cursor:grab;user-select:none;-webkit-user-select:none}
.dial:active{cursor:grabbing}
.dial canvas,.dial svg{position:absolute;inset:0;width:100%;height:100%;display:block}
.dial svg{overflow:visible}
.hint{font:600 13px var(--f-label);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);text-align:center;margin:0;transition:opacity .3s}
.controls{display:flex;gap:12px;align-items:center;margin-top:14px}
.heading{font:900 38px/1 var(--f-display);font-variant-numeric:tabular-nums;min-width:4.2ch}
.heading small{font:700 13px var(--f-mono);color:var(--red);margin-left:4px}
.lock{all:unset;flex:1;text-align:center;cursor:pointer;background:var(--red);color:var(--card);border:2px solid var(--ink);border-radius:14px;
  padding:14px;font:800 20px var(--f-label);letter-spacing:.08em;text-transform:uppercase;box-shadow:4px 4px 0 var(--ink)}
.lock:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.lock.next{background:var(--blue)}
.lock:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.lock[disabled]{opacity:.6;pointer-events:none}
.result{position:absolute;left:18px;right:18px;bottom:96px;background:var(--card);border:2px solid var(--ink);border-radius:14px;padding:12px 16px;
  box-shadow:4px 4px 0 var(--ink);transform:translateY(12px) scale(.96);opacity:0;pointer-events:none;transition:.35s cubic-bezier(.3,1.4,.5,1)}
.result.show{opacity:1;transform:none}
.result h3{margin:0;font:900 30px/1 var(--f-display);text-transform:uppercase}
.result h3 em{font:italic 600 17px var(--f-script);color:var(--ink);text-transform:none;margin-left:8px}
.result p{margin:6px 0 0;font:500 13px var(--f-mono);display:flex;justify-content:space-between;gap:10px}
.result p i{display:inline-block;width:18px;height:4px;margin-right:6px;vertical-align:middle;background:repeating-linear-gradient(90deg,var(--red) 0 5px,var(--blue) 5px 10px)}
.result p.long i{background:repeating-linear-gradient(90deg,var(--ink) 0 2px,transparent 2px 5px)}
.stamp{position:absolute;right:-6px;top:-30px;width:92px;height:92px;border:3px double var(--red);border-radius:50%;display:grid;place-items:center;
  font:800 13px/1.05 var(--f-label);letter-spacing:.08em;color:var(--red);text-align:center;transform:rotate(-14deg) scale(1.8);opacity:0;background:rgba(255,250,240,.7)}
.result.show .stamp.on{animation:stamp .4s .15s cubic-bezier(.3,1.6,.5,1) forwards}
@keyframes stamp{to{opacity:.92;transform:rotate(-14deg) scale(1)}}
.summary{text-align:center;padding:10px 4px 4px}
.summary h3{font:italic 800 30px var(--f-script);margin:4px 0}
.summary p{margin:0 0 14px}
.summary .stores{align-items:center}

/* "continue on your phone", shown once after the first miss */
.handoff{position:absolute;inset:0;z-index:5;display:grid;grid-template-rows:auto auto;align-content:center;gap:8px;background:rgba(244,236,220,.94);backdrop-filter:blur(3px);
  padding:22px;opacity:0;pointer-events:none;transition:opacity .35s}
.handoff.show{opacity:1;pointer-events:auto}
.handoff .stage{position:relative;display:grid;place-items:center;height:190px}
.handoff .phone{width:84px;border:2px solid var(--ink);border-radius:18px;padding:4px;background:var(--ink);box-shadow:6px 6px 0 var(--red);transform:translateY(60px) rotate(8deg);opacity:0}
.handoff .phone img{display:block;width:100%;height:auto;border-radius:14px;aspect-ratio:1320/2868;object-fit:cover}
.handoff.show .phone{animation:phoneIn .7s .15s cubic-bezier(.3,1.5,.5,1) forwards}
@keyframes phoneIn{to{transform:translateY(0) rotate(-4deg);opacity:1}}
.handoff .plane{position:absolute;left:50%;top:50%;width:34px;height:34px;color:var(--red);offset-path:path("M -150 -90 C -60 -160, 40 -120, 0 -10");offset-rotate:auto;offset-distance:0%;opacity:0}
.handoff.show .plane{animation:fly 1.1s .55s ease-in forwards}
@keyframes fly{0%{offset-distance:0%;opacity:1}85%{opacity:1}100%{offset-distance:100%;opacity:0;transform:scale(.4)}}
.handoff .trail{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.handoff .trail path{stroke-dasharray:6 7;stroke-dashoffset:400;opacity:0}
.handoff.show .trail path{animation:trail 1.1s .55s ease-in forwards}
@keyframes trail{0%{opacity:1;stroke-dashoffset:400}100%{opacity:.6;stroke-dashoffset:0}}
.handoff .copy{text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px;transform:translateY(16px);opacity:0}
.handoff.show .copy{animation:rise .5s .9s ease-out forwards}
@keyframes rise{to{transform:none;opacity:1}}
.handoff h3{margin:0;font:italic 800 clamp(26px,4vw,32px)/1.05 var(--f-script);text-wrap:balance}
.handoff p{margin:0;max-width:34ch;color:#3a3f55}
.handoff .stores{align-items:center}
.handoff .qr{margin-top:4px}
html[data-platform="desktop"] .handoff .stores{display:none}
.handoff .keep{all:unset;cursor:pointer;font:600 14px var(--f-body);color:var(--muted);text-decoration:underline;text-underline-offset:3px;margin-top:4px}
.handoff .keep:focus-visible{outline:3px solid var(--blue);outline-offset:3px}

/* postcards */
section{padding-block:40px}
.sec-h{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
.sec-h h2{font:italic 800 clamp(34px,5vw,54px)/1 var(--f-script);margin:0;text-wrap:balance}
.sec-h span{font:500 13px var(--f-mono);letter-spacing:.24em;text-transform:uppercase;color:var(--muted)}
.cards{display:flex;gap:28px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-block:36px 40px;
  margin-inline:calc(-1 * max(24px,env(safe-area-inset-left,0px))) calc(-1 * max(24px,env(safe-area-inset-right,0px)));
  padding-inline:max(24px,env(safe-area-inset-left,0px)) max(24px,env(safe-area-inset-right,0px));scroll-padding-inline:max(24px,env(safe-area-inset-left,0px))}
.cards::-webkit-scrollbar{display:none}
.cards::after{content:"";flex:0 0 1px}
.card{flex:0 0 auto;width:min(230px,62vw);margin:0;scroll-snap-align:start;transform:rotate(var(--r));transition:transform .3s cubic-bezier(.3,1.4,.5,1)}
.card:hover{transform:rotate(0) translateY(-10px)}
.card .phone{border:2px solid var(--ink);border-radius:34px;padding:7px;background:var(--ink);box-shadow:8px 10px 0 rgba(29,36,64,.18)}
.card img{display:block;width:100%;height:auto;border-radius:27px;aspect-ratio:1320/2868;object-fit:cover;background:var(--sea)}
.card figcaption{font:italic 600 16px var(--f-script);text-align:center;margin-top:12px}

/* stamps */
.stamps{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:26px;margin-top:26px}
.stamp-wrap{filter:drop-shadow(3px 4px 0 rgba(29,36,64,.2))}
.st{position:relative;height:100%;background:var(--card);padding:10px;
  -webkit-mask:linear-gradient(#000 0 0) content-box,radial-gradient(circle 5px at 50% 50%,#0000 96%,#000) -8px -8px/16px 16px round;
  mask:linear-gradient(#000 0 0) content-box,radial-gradient(circle 5px at 50% 50%,#0000 96%,#000) -8px -8px/16px 16px round}
.st .in{position:relative;height:100%;border:2px solid var(--ink);padding:18px 18px 16px}
.st .val{position:absolute;top:14px;right:16px;font:900 28px/1 var(--f-display);color:var(--red)}
.st h3{margin:0 56px 8px 0;font:900 28px/1 var(--f-display);text-transform:uppercase;letter-spacing:.01em}
.st p{margin:0;font-size:16px;color:#3a3f55}
.stamp-wrap:nth-child(2n) .val{color:var(--blue)}
.cta{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;background:var(--ink);color:var(--paper);border-radius:24px;padding:36px;margin-block:30px 20px}
.cta h2{margin:0;font:italic 800 clamp(30px,4.4vw,48px)/1.05 var(--f-script);text-wrap:balance}
.cta .store{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.cta .alt{color:var(--paper)}
.cta .qr p{color:#c9c3b4}
footer{padding-block:24px 48px;font:500 14px var(--f-body);color:var(--muted);display:flex;gap:18px;flex-wrap:wrap;align-items:center}
footer a{color:var(--muted)}

@media (max-width:860px){
  .hero{grid-template-columns:1fr;gap:28px;padding-top:10px}
  .cta{grid-template-columns:1fr}
  .lead{max-width:none}
}
@media (max-width:480px){
  .wrap{padding-inline:max(18px,env(safe-area-inset-left,0px)) max(18px,env(safe-area-inset-right,0px))}
  .ticket .to{font-size:28px}
  .result{bottom:92px}
  .store b{font-size:22px}
  .handoff{padding:16px}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01s!important;animation-delay:0s!important;transition:none!important}}
html:not([data-platform]) .stores .alt{display:none}
@media (min-width:1000px){
  .cards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));overflow:visible;margin-inline:0;padding-inline:6px}
  .cards::after{display:none}
  .card{width:auto}
}

/* three-cities finale: the flight to the visitor's store */
.summary{text-align:center;padding:14px 4px 2px}
.summary .again{all:unset;cursor:pointer;margin-top:12px;display:inline-block;background:var(--blue);color:var(--card);border:2px solid var(--ink);border-radius:14px;
  padding:12px 26px;font:800 18px var(--f-label);letter-spacing:.08em;text-transform:uppercase;box-shadow:4px 4px 0 var(--ink)}
.summary .again:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.flightpath{position:absolute;left:0;top:0;pointer-events:none;z-index:40;overflow:visible}
.flightpath path{fill:none;stroke-linecap:round}
.flightpath .blue{stroke:var(--blue);stroke-width:5}
.flightpath .red{stroke:var(--red);stroke-width:5;stroke-dasharray:10 10}
.flightpath .jet{fill:var(--ink);stroke:var(--card);stroke-width:1.5}
.flightpath.done{transition:opacity 2.2s .4s;opacity:0}
.store,.qr{position:relative}
.gate-stamp{position:absolute;right:-26px;top:-30px;width:70px;height:70px;border:3px double var(--red);border-radius:50%;display:grid;place-items:center;text-align:center;
  font:800 12px/1.05 var(--f-label);letter-spacing:.08em;color:var(--red);background:rgba(255,250,240,.85);transform:rotate(-16deg) scale(2.2);opacity:0;pointer-events:none;
  animation:stamp .45s cubic-bezier(.3,1.6,.5,1) forwards}
@keyframes stampGate{to{opacity:1;transform:rotate(-16deg) scale(1)}}
.gate-stamp{animation-name:stampGate}
.gate-open{animation:gatePulse 1.2s .3s 3 ease-out}
@keyframes gatePulse{0%{outline:0 solid rgba(216,67,47,.5);outline-offset:0}100%{outline:14px solid rgba(216,67,47,0);outline-offset:6px}}