/* Anti-Horizon website. The page is the game's flight screen: full-bleed screenshots from the game
   under the game's own HUD (glass panels, mono readouts, mint actions, gold notices). */
@font-face{font-family:"AH Sans";src:url("/fonts/inter-latin.woff2") format("woff2");font-weight:300 600;font-style:normal;font-display:swap}
@font-face{font-family:"AH Mono";src:url("/fonts/jetbrains-mono-latin.woff2") format("woff2");font-weight:400 500;font-style:normal;font-display:swap}
:root{
  color-scheme:dark;
  --bg:#070e15;--deep:#04090e;--surface:#101c26;--raised:#182a36;
  --ink:#e7ece5;--soft:#bccbc7;--muted:#93aaa6;
  --aqua:#b5e6ce;--aqua-hi:#cdf1de;--gold:#d8bc8d;--coral:#e3a08b;--on-aqua:#0b1a22;
  --glass:rgba(10,22,28,.86);--line:rgba(172,200,192,.18);
  --sans:"AH Sans","Segoe UI",system-ui,-apple-system,Arial,sans-serif;
  --mono:"AH Mono",ui-monospace,"Cascadia Code",Consolas,monospace;
  --serif:Georgia,"Times New Roman",serif;
  --edge:40px;--r:5px;
  --out:cubic-bezier(.16,1,.3,1);
}
@media (max-width:760px){:root{--edge:16px}}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-color:#2b4150 var(--bg);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--sans);-webkit-font-smoothing:antialiased;caret-color:var(--aqua)}
img{display:block;max-width:100%}
h1,h2,h3,p,ol,ul,dl,dd,figure{margin:0}
ol,ul{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
::selection{background:var(--aqua);color:var(--on-aqua)}
:focus-visible{outline:2px solid var(--aqua);outline-offset:3px}
main:focus{outline:none}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip{position:absolute;z-index:50;left:var(--edge);top:-80px;background:var(--aqua);color:var(--on-aqua);padding:10px 16px;border-radius:3px;font-weight:600;text-decoration:none}
.skip:focus{top:12px}

/* The game's HUD material */
.glass{background:var(--glass);border:1px solid var(--line);border-radius:var(--r);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.track{height:3px;background:var(--raised);border-radius:2px;overflow:hidden}
.track i{display:block;height:100%;background:var(--aqua);transition:width .5s var(--out)}
kbd{font:500 12px var(--mono);color:var(--aqua);border:1px solid rgba(147,170,166,.4);border-radius:3px;padding:2px 6px}

/* Actions */
.btn{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;min-height:56px;padding:0 24px;border-radius:3px;font-size:17px;font-weight:600;text-decoration:none;transition:background .2s,border-color .2s,transform .2s var(--out),box-shadow .2s}
.btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--out)}
.btn-play{background:var(--aqua);color:var(--on-aqua);min-width:250px}
.btn-play:hover{background:var(--aqua-hi);transform:translateY(-1px);box-shadow:0 8px 28px rgba(0,0,0,.35)}
.btn-play:hover svg{transform:translateX(3px)}
.btn-play:active{transform:translateY(0) scale(.98)}
.btn-quiet{background:var(--glass);border:1px solid var(--line);color:var(--ink);font-weight:500;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.btn-quiet:hover{border-color:var(--aqua);color:var(--aqua)}
.btn-small{min-height:40px;padding:0 16px;font-size:15px;background:var(--aqua);color:var(--on-aqua)}

/* Toasts, as the game draws them */
.toast{display:flex;flex-direction:column;gap:6px;padding:14px 18px;border-left:2px solid var(--aqua);font-size:15px;line-height:1.5;color:var(--soft)}
.toast-title{font:500 12px/1.4 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--aqua)}
.toast-gold{border-left-color:var(--gold)}.toast-gold .toast-title{color:var(--gold)}
.toast-danger{border-left-color:var(--coral)}.toast-danger .toast-title{color:var(--coral)}

/* ---------- First viewport: the flight screen ---------- */
.hero{position:relative;height:100svh;min-height:680px;overflow:hidden;isolation:isolate}
.hero-shot{position:absolute;inset:0;z-index:-1;width:100%;height:100%;object-fit:cover;object-position:56% 50%;animation:drift 48s ease-in-out infinite alternate}
@keyframes drift{from{transform:scale(1.03)}to{transform:scale(1.1) translate(-1%,.5%)}}
.mass-panel{position:absolute;left:var(--edge);top:var(--edge);width:min(600px,calc(100% - 2 * var(--edge) - 320px));padding:30px 32px 24px;display:flex;flex-direction:column;gap:18px}
.title{font-weight:300;font-size:clamp(40px,4.3vw,66px);line-height:1.06;letter-spacing:-.035em;text-wrap:balance}
.title em,.evolve h2 em{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--aqua);letter-spacing:-.02em}
.lead{font-size:17px;color:var(--soft);max-width:52ch}
.readout{display:flex;justify-content:space-between;gap:16px;font:400 12px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:-8px}
.readout-next{color:var(--aqua)}
.page-panel{position:absolute;right:var(--edge);top:var(--edge);width:280px;padding:16px 18px 12px;display:flex;flex-direction:column;gap:12px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:600;font-size:15px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none}
.page-list{display:flex;flex-direction:column}
.page-list a{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 0;border-top:1px solid var(--line);text-decoration:none;font-size:16px;transition:color .2s}
.page-list a:hover{color:var(--aqua)}
.num{font:400 12px var(--mono);letter-spacing:.06em;color:var(--muted)}
.page-list a:hover .num{color:var(--aqua)}
.motion-toggle{align-self:flex-start;font:400 12px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:6px 0;min-height:32px}
.motion-toggle:hover{color:var(--aqua)}
.hero-toast{position:absolute;right:calc(var(--edge) + 304px);top:22%;width:330px;opacity:0;transform:translateY(-10px);transition:opacity .5s var(--out),transform .5s var(--out)}
.hero-toast.in{opacity:1;transform:none}
.no-js .hero-toast{opacity:1;transform:none}
.telemetry{position:absolute;left:var(--edge);bottom:var(--edge);display:flex;padding:14px 0}
.telemetry div{padding:0 22px;border-left:1px solid var(--line)}
.telemetry div:first-child{border-left:0}
.telemetry dt{font:400 12px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.telemetry dd{font-size:22px;font-weight:300;margin-top:4px}
.ability-bar{position:absolute;left:50%;bottom:var(--edge);transform:translateX(-50%);display:flex;gap:10px}
.radar{position:absolute;right:var(--edge);bottom:var(--edge);padding:10px 10px 8px;display:flex;flex-direction:column;gap:6px}
.radar-name{font:400 12px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:0 4px}
.radar-canvas{width:180px;height:180px}

@media (max-width:1180px){
  .radar,.hero-toast{display:none}
  .mass-panel{width:min(600px,calc(100% - 2 * var(--edge) - 300px))}
}
@media (max-width:900px){
  .hero{height:auto;min-height:100svh;display:flex;flex-direction:column;gap:12px;padding:var(--edge)}
  .hero-shot{object-position:50% 50%}
  .page-panel{order:-1;position:relative;inset:auto;width:auto;flex-direction:row;align-items:center;justify-content:space-between;padding:10px 14px}
  .page-list{display:none}
  .mass-panel{position:relative;inset:auto;width:auto;padding:22px 20px 18px;gap:14px}
  .title{font-size:clamp(34px,9vw,46px)}
  .lead{font-size:16px}
  .telemetry{position:relative;inset:auto;margin-top:auto;align-self:stretch;justify-content:space-between;padding:12px 4px}
  .telemetry div{padding:0 12px}
  .telemetry dd{font-size:18px}
  .ability-bar{position:relative;inset:auto;transform:none;flex-direction:column}
  .ability-bar .btn{width:100%}
  .readout{flex-direction:column;gap:4px}
}

/* ---------- The climb: the HUD counts up as you scroll ---------- */
.climb{position:relative;background:var(--deep)}
.climb-stage{position:sticky;top:0;height:100svh;margin-bottom:-100svh;overflow:hidden}
.climb-shot{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.06);transition:opacity 1s var(--out),transform 2.4s var(--out)}
.climb-shot.is-on{opacity:1;transform:scale(1)}
.climb-stage::after{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 55% 45% at 18% 88%,rgba(4,9,14,.7),rgba(4,9,14,0) 75%);pointer-events:none}
.climb-panel{position:absolute;z-index:2;left:var(--edge);top:var(--edge);width:330px;padding:18px 20px;display:flex;flex-direction:column;gap:10px}
.climb-name{font:400 12px/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.climb-mass{font-size:30px;font-weight:300;letter-spacing:-.02em;font-variant-numeric:tabular-nums;white-space:nowrap}
.ladder{display:grid;grid-template-columns:repeat(22,1fr);gap:3px;margin-top:4px}
.ladder li{height:6px;border-radius:1px;background:var(--raised);transition:background .3s}
.ladder li.on{background:var(--aqua)}
.ladder li.at{background:var(--gold)}
.no-js .climb-panel{display:none}
.climb-head{position:relative;z-index:1;margin:min(34vh,300px) var(--edge) 0 auto;width:min(500px,calc(100% - 2 * var(--edge)));padding:28px 30px;display:flex;flex-direction:column;gap:12px}
.climb-head p{color:var(--soft);font-size:17px}
.climb-head h2,.what-head h2,.how-panel h2,.mode-panel h2,.dialog h2{font-weight:300;font-size:clamp(30px,2.9vw,44px);line-height:1.12;letter-spacing:-.025em;text-wrap:balance}
.climb-steps{position:relative;z-index:1;overflow-x:clip}
.step{min-height:100svh;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;gap:24px;padding:80px var(--edge) 10svh}
.evolve{position:relative;text-align:left;max-width:620px;display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:28px 0}
.evolve::before{content:"";position:absolute;inset:-60px -140px -60px -90px;z-index:-1;background:radial-gradient(ellipse at 40% 50%,rgba(7,14,21,.82),rgba(7,14,21,0) 70%)}
.evolve h3,.evolve h2{font-weight:300;font-size:clamp(44px,5.4vw,84px);line-height:1.02;letter-spacing:-.035em}
.evolve-line{order:-1;font:500 12px/1.4 var(--mono);letter-spacing:.24em;text-transform:uppercase;color:var(--aqua)}
.evolve p{font-size:17px;color:var(--soft);max-width:46ch}
.evolve .evolve-line{color:var(--aqua)}
.evolve-mass{font:400 15px var(--mono)!important;color:var(--aqua)!important;letter-spacing:.04em}
.js .evolve{opacity:0;filter:blur(8px);transform:scale(.96);transition:opacity .8s var(--out),filter .8s var(--out),transform .8s var(--out)}
.js .evolve.in{opacity:1;filter:none;transform:none}
.step-shot{width:min(640px,100%);border-radius:var(--r);border:1px solid var(--line)}
.js .step-shot{display:none}

/* ---------- Modes: the mode list over each mode's own screen ---------- */
.modes{position:relative;min-height:100svh;display:flex;align-items:center;padding:110px var(--edge);background:var(--deep)}
.mode-screen{margin-left:auto;width:min(1120px,calc(100% - 330px));position:relative}
.mode-shot{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r);border:1px solid var(--line);transition:opacity .35s var(--out)}
.mode-shot.swap{opacity:.15}
.mode-panel{position:absolute;left:var(--edge);top:50%;transform:translateY(-50%);width:min(460px,calc(100% - 2 * var(--edge)));padding:28px 28px 26px;display:flex;flex-direction:column;gap:18px}
.mode-list{display:flex;flex-direction:column}
.mode-btn{width:100%;text-align:left;display:flex;flex-direction:column;gap:6px;padding:14px 14px 14px 30px;border-top:1px solid var(--line);position:relative;transition:background .2s}
.mode-btn::before{content:"";position:absolute;left:12px;top:23px;width:7px;height:7px;border-radius:50%;background:var(--raised);transition:background .2s,transform .2s}
.mode-btn:hover{background:rgba(181,230,206,.05)}
.mode-btn[aria-pressed=true]{background:rgba(181,230,206,.08)}
.mode-btn[aria-pressed=true]::before{background:var(--aqua);transform:scale(1.3)}
.mode-name{font-size:18px;font-weight:500}
.mode-btn[aria-pressed=true] .mode-name{color:var(--aqua)}
.mode-text{font-size:15px;color:var(--soft);display:none}
.mode-btn[aria-pressed=true] .mode-text,.no-js .mode-text{display:block}
@media (max-width:1000px){
  .modes{flex-direction:column;align-items:stretch;padding:80px var(--edge)}
  .mode-screen{width:100%;margin:0}
  .mode-panel{position:relative;left:auto;top:auto;transform:none;width:auto;margin:-48px 12px 0}
  .mode-panel .btn{width:100%}
}

/* ---------- How to play: the real HUD, explained in place ---------- */
.how{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(340px,1fr);gap:24px;align-items:center;padding:120px var(--edge);max-width:1680px;margin:0 auto}
.hud-shot{position:relative}
.hud-shot img{width:100%;border-radius:var(--r);border:1px solid var(--line)}
.spot{position:absolute;left:var(--x);top:var(--y)}
.spot button{position:relative;display:block;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;border:2px solid var(--aqua);background:rgba(7,14,21,.7);transition:background .2s,transform .2s var(--out)}
.spot button::before{content:"";position:absolute;inset:9px;border-radius:50%;background:var(--aqua)}
.spot button::after{content:"";position:absolute;inset:-2px;border-radius:50%;border:2px solid var(--aqua);animation:ping 2.4s var(--out) infinite}
@keyframes ping{from{transform:scale(1);opacity:.7}to{transform:scale(1.9);opacity:0}}
.spot button:hover,.spot button[aria-expanded=true]{transform:scale(1.12);background:var(--aqua)}
.tip{position:absolute;z-index:3;left:26px;top:-22px;width:250px;padding:12px 14px;background:var(--glass);border:1px solid var(--line);border-radius:var(--r);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);font-size:14px;line-height:1.5;color:var(--soft);opacity:0;visibility:hidden;transform:translateY(4px);transition:opacity .2s,transform .2s var(--out),visibility .2s;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.tip b{display:block;font:500 12px/1.4 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--aqua);margin-bottom:4px}
.tip-left{left:auto;right:26px}
.spot:hover .tip,.spot button[aria-expanded=true]+.tip,.spot button:focus-visible+.tip{opacity:1;visibility:visible;transform:none}
.how-panel{padding:30px 30px 18px;display:flex;flex-direction:column;gap:16px}
.how-panel>p{color:var(--soft);font-size:16px}
.controls{width:100%;border-collapse:collapse;font-size:15px}
.controls th,.controls td{text-align:left;vertical-align:top;padding:11px 0;border-top:1px solid var(--line)}
.controls th{font:400 12px/1.9 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);width:7.5em;padding-right:12px}
@media (max-width:1100px){.how{grid-template-columns:1fr;padding:90px var(--edge)}}
@media (max-width:640px){.spot{position:static}.spot button{position:absolute;left:var(--x);top:var(--y);width:30px;height:30px;margin:-15px 0 0 -15px}.tip,.tip-left{left:0;right:0;top:calc(100% + 8px);width:auto}}

/* ---------- What you do: a cascade of the game's own toasts ---------- */
.what,.questions,.close{position:relative;isolation:isolate;overflow:hidden}
.section-bg{position:absolute;inset:0;z-index:-2;width:100%;height:100%;object-fit:cover}
.what::before,.questions::before{content:"";position:absolute;inset:0;z-index:-1;background:rgba(4,9,14,.62)}
.what{min-height:100svh;padding:120px var(--edge);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:40px;align-items:start}
.what-head{position:sticky;top:var(--edge);padding:30px 32px;display:flex;flex-direction:column;gap:14px}
.what-head p{color:var(--soft);font-size:17px}
.toasts{columns:2 340px;column-gap:16px}
.toasts .toast{break-inside:avoid;margin-bottom:16px}
.toasts .toast:nth-child(4n+2){margin-left:24px}
.js .toasts .toast{opacity:0;transform:translateY(-14px);transition:opacity .55s var(--out),transform .55s var(--out);transition-delay:var(--d,0ms)}
.js .toasts .toast.in{opacity:1;transform:none}
@media (max-width:900px){.what{grid-template-columns:1fr;padding:90px var(--edge)}.what-head{position:relative;top:auto}.toasts .toast:nth-child(4n+2){margin-left:0}}

/* ---------- Questions: an in-game dialog ---------- */
.questions{padding:120px var(--edge)}
.questions::before{background:rgba(3,9,14,.8)}
.dialog{width:min(780px,100%);margin:0 auto;background:var(--surface);border:1px solid rgba(147,170,166,.16);border-radius:8px;padding:38px 42px 26px;box-shadow:0 30px 120px rgba(0,0,0,.45)}
.faq{margin-top:20px}
.faq details{border-top:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 0;font-size:18px;cursor:pointer;transition:color .2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:12px;height:12px;background:linear-gradient(var(--aqua),var(--aqua)) center/12px 2px no-repeat,linear-gradient(var(--aqua),var(--aqua)) center/2px 12px no-repeat;transition:transform .3s var(--out)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq summary:hover{color:var(--aqua)}
.faq details p{padding:0 0 20px;color:var(--soft);max-width:66ch}
.faq a{color:var(--aqua);text-underline-offset:3px}
@media (max-width:640px){.dialog{padding:26px 20px 14px}.questions{padding:80px var(--edge)}}

/* ---------- Close: the final class ---------- */
.close{min-height:100svh;display:flex;align-items:flex-end;justify-content:center;padding:120px var(--edge) 9svh}
.close::before{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(ellipse 70% 60% at 50% 50%,rgba(4,9,14,.5),rgba(4,9,14,.15))}
.evolve-final{gap:14px;align-items:center;text-align:center}
.evolve-final .btn{margin-top:14px}

/* ---------- Footer, like the game's menu footer ---------- */
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px;padding:26px var(--edge);border-top:1px solid var(--line);font:400 12px/1.6 var(--mono);letter-spacing:.02em;color:var(--muted)}
.foot .brand{font-family:var(--sans);color:var(--ink)}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 22px}
.foot nav a{text-decoration:none;text-transform:uppercase;letter-spacing:.1em;padding:6px 0}
.foot nav a:hover{color:var(--aqua)}

/* ---------- 404 and plain pages ---------- */
.bar{display:flex;align-items:center;gap:24px;padding:22px var(--edge)}
.page{max-width:760px;padding:140px var(--edge) 120px;display:flex;flex-direction:column;gap:24px}
.page .display{font-weight:300;font-size:clamp(36px,4.4vw,60px);line-height:1.06;letter-spacing:-.035em}
.page p{color:var(--soft)}

/* ---------- Motion off: reduced motion or the pause control ---------- */
.still *,.still *::before,.still *::after{animation-play-state:paused!important}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  .js .evolve,.js .toasts .toast{opacity:1;filter:none;transform:none}
}