/*
 * Cosmos: Space Quiz for Kids — website styling.
 * Palette + type mirror the app (src/ui/tokens/colors.ts, Hanken Grotesk +
 * Space Mono) so the site reads as the same product. Fonts are self-hosted
 * (no third-party request) — fitting for a children's-privacy site.
 */

/* ---- fonts (self-hosted) ---- */
@font-face{font-family:'Hanken';font-weight:400;font-style:normal;font-display:swap;
  src:url('fonts/HankenGrotesk_400Regular.ttf') format('truetype');}
@font-face{font-family:'Hanken';font-weight:500;font-style:normal;font-display:swap;
  src:url('fonts/HankenGrotesk_500Medium.ttf') format('truetype');}
@font-face{font-family:'Hanken';font-weight:700;font-style:normal;font-display:swap;
  src:url('fonts/HankenGrotesk_700Bold.ttf') format('truetype');}
@font-face{font-family:'Hanken';font-weight:900;font-style:normal;font-display:swap;
  src:url('fonts/HankenGrotesk_900Black.ttf') format('truetype');}
@font-face{font-family:'SpaceMono';font-weight:400;font-style:normal;font-display:swap;
  src:url('fonts/SpaceMono_400Regular.ttf') format('truetype');}

/* ---- tokens ---- */
:root{
  --abyss:#05080F; --void:#0E1F33; --deep:#16283F; --surface:#1E3350;
  --night:#141A38; --horizon:#0C2436; --nebula:#785FCD;
  --starlight:#F3F1EA; --mist:#E4E8F1; --haze:#C9D3E4; --dust:#A9B6CC;
  --slate:#93A4BC; --muted:#8794AC; --faint:#64728C;
  --comet:#FFC58C; --comet-light:#FFCF9A; --comet-deep:#FF9E63; --on-comet:#241503;
  --aurora:#63D8E8; --ember:#FF8C6B;
  --hairline:rgba(160,190,225,.16);
  --hairline-strong:rgba(160,190,225,.24);
  --sans:'Hanken',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --mono:'SpaceMono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  --measure:44rem;
  --page:76rem;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;}}

body{
  margin:0;
  font-family:var(--sans);
  font-weight:400;
  font-size:1.0625rem;
  line-height:1.65;
  color:var(--mist);
  background:var(--void);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* fixed night-sky backdrop: warm top glow + violet crown + sky gradient + a sparse starfield */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(120% 60% at 50% -6%, rgba(255,197,140,.10), rgba(255,197,140,0) 46%),
    radial-gradient(90% 55% at 50% 4%, rgba(120,95,205,.18), rgba(120,95,205,0) 60%),
    linear-gradient(180deg,#141A38 0%,#0E1F33 42%,#0C2436 78%,#05080F 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='420' height='420' viewBox='0 0 420 420'><g fill='%23ffffff'><circle cx='30' cy='60' r='1'/><circle cx='120' cy='30' r='.8'/><circle cx='210' cy='90' r='1.2'/><circle cx='330' cy='50' r='.9'/><circle cx='390' cy='140' r='1'/><circle cx='60' cy='170' r='.7'/><circle cx='170' cy='210' r='1'/><circle cx='280' cy='180' r='.8'/><circle cx='360' cy='260' r='1.1'/><circle cx='40' cy='300' r='.9'/><circle cx='140' cy='330' r='.7'/><circle cx='240' cy='300' r='1'/><circle cx='320' cy='360' r='.8'/><circle cx='100' cy='390' r='1'/><circle cx='200' cy='400' r='.7'/></g><g fill='%2363D8E8'><circle cx='250' cy='140' r='.9'/><circle cx='80' cy='240' r='.8'/></g></svg>");
  background-size:420px 420px;
}

img{max-width:100%;display:block;}
a{color:var(--comet);text-decoration:none;text-underline-offset:.2em;}
a:hover{color:var(--comet-light);text-decoration:underline;}

/* ---- layout ---- */
.container{width:100%;max-width:var(--page);margin:0 auto;padding:0 1.5rem;}
.narrow{max-width:var(--measure);}
main{display:block;}
section{padding:4.5rem 0;}

/* ---- header / nav ---- */
.site-header{position:sticky;top:0;z-index:20;
  background:rgba(9,15,28,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hairline);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;
  height:4.25rem;max-width:var(--page);margin:0 auto;padding:0 1.5rem;}
.brand{display:inline-flex;align-items:center;gap:.6rem;color:var(--starlight);
  font-weight:900;font-size:1.15rem;letter-spacing:-.01em;}
.brand:hover{color:var(--starlight);text-decoration:none;}
.brand img{width:1.9rem;height:1.9rem;filter:drop-shadow(0 0 10px rgba(255,197,140,.35));}
.nav-links{display:flex;align-items:center;gap:1.75rem;}
.nav-links a{color:var(--haze);font-size:.98rem;font-weight:500;}
.nav-links a:hover{color:var(--comet);text-decoration:none;}
@media (max-width:640px){.nav-links{display:none;}}

/* ---- eyebrow / kicker ---- */
.eyebrow{font-family:var(--mono);text-transform:uppercase;letter-spacing:.28em;
  font-size:.72rem;color:var(--muted);margin:0 0 1rem;}
.eyebrow .spark{color:var(--comet);}

/* ---- typography ---- */
h1,h2,h3{color:var(--starlight);letter-spacing:-.02em;line-height:1.08;margin:0 0 .6rem;}
h1{font-weight:900;font-size:clamp(2.4rem,6vw,4rem);}
h2{font-weight:900;font-size:clamp(1.7rem,3.6vw,2.5rem);}
h3{font-weight:700;font-size:1.2rem;letter-spacing:-.01em;}
.accent{color:var(--comet);}
.lede{font-size:clamp(1.1rem,2.2vw,1.35rem);color:var(--haze);line-height:1.5;font-weight:400;}
.muted{color:var(--dust);}

/* ---- hero ---- */
.hero{position:relative;padding-top:4.5rem;padding-bottom:2rem;text-align:center;}
.hero .container{position:relative;}
.hero-mark{width:120px;height:120px;margin:0 auto 1.75rem;
  filter:drop-shadow(0 12px 40px rgba(255,158,99,.35));}
.hero h1{margin-inline:auto;max-width:18ch;}
.hero .lede{margin:1.25rem auto 0;max-width:40ch;}

/* ---- buttons ---- */
.cta-row{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin-top:2.25rem;}
.btn{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--sans);font-weight:700;
  font-size:1rem;padding:.9rem 1.5rem;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .12s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:linear-gradient(180deg,var(--comet-light),var(--comet-deep));color:var(--on-comet);
  box-shadow:0 12px 30px -12px rgba(255,158,99,.6);}
.btn-primary:hover{color:var(--on-comet);box-shadow:0 16px 40px -12px rgba(255,158,99,.7);}
.btn-ghost{background:rgba(160,190,225,.06);color:var(--starlight);border-color:var(--hairline-strong);}
.btn-ghost:hover{color:var(--starlight);border-color:var(--comet);}
.btn small{display:block;font-family:var(--mono);font-size:.62rem;font-weight:400;letter-spacing:.12em;
  text-transform:uppercase;opacity:.85;line-height:1;margin-bottom:.15rem;}
.btn .lg{font-size:1.05rem;line-height:1;}
.store-note{margin-top:.9rem;font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);}

/* ---- trust chips ---- */
.chips{display:flex;flex-wrap:wrap;gap:.6rem;justify-content:center;margin-top:2.5rem;}
.chip{display:inline-flex;align-items:center;gap:.45rem;font-size:.85rem;color:var(--haze);
  background:rgba(160,190,225,.06);border:1px solid var(--hairline);border-radius:999px;padding:.4rem .85rem;}
.chip::before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--aurora);
  box-shadow:0 0 8px var(--aurora);}

/* ---- cards / grids ---- */
.grid{display:grid;gap:1.25rem;}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(18rem,1fr));}
.card{background:linear-gradient(160deg,rgba(30,51,80,.55),rgba(14,31,51,.45));
  border:1px solid var(--hairline);border-radius:1.25rem;padding:1.6rem;}
.card h3{margin-top:.3rem;}
.card p{color:var(--haze);margin:.4rem 0 0;}
.card .ic{width:2.75rem;height:2.75rem;border-radius:.8rem;display:grid;place-items:center;
  font-size:1.4rem;background:rgba(255,197,140,.12);border:1px solid rgba(255,197,140,.22);}

.section-head{text-align:center;max-width:36rem;margin:0 auto 2.75rem;}
.section-head .lede{margin-top:.5rem;}

/* topic pills */
.topics{display:flex;flex-wrap:wrap;gap:.7rem;justify-content:center;}
.topic{display:inline-flex;align-items:center;gap:.5rem;background:rgba(160,190,225,.05);
  border:1px solid var(--hairline);border-radius:.8rem;padding:.6rem 1rem;color:var(--mist);font-size:.95rem;}
.topic .dot{width:.6rem;height:.6rem;border-radius:50%;}

/* how-it-works steps */
.flow{display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));counter-reset:s;}
.flow .card{position:relative;padding-top:2.4rem;}
.flow .card::before{counter-increment:s;content:counter(s);position:absolute;top:1.2rem;left:1.6rem;
  font-family:var(--mono);font-size:.8rem;color:var(--comet);border:1px solid rgba(255,197,140,.4);
  width:1.8rem;height:1.8rem;border-radius:50%;display:grid;place-items:center;}

/* ---- device screenshots ---- */
.shots{display:flex;gap:1.5rem;justify-content:center;flex-wrap:wrap;margin-top:1rem;}
.device{width:15rem;max-width:60vw;border-radius:2rem;padding:.5rem;background:#05080F;
  border:1px solid var(--hairline-strong);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.8),0 0 90px -40px rgba(255,197,140,.25);}
.device img{border-radius:1.6rem;width:100%;}
.device:nth-child(even){transform:translateY(1.5rem);}
@media (max-width:640px){.device:nth-child(even){transform:none;}}

/* ---- callouts ---- */
.callout{background:linear-gradient(160deg,rgba(30,51,80,.5),rgba(14,31,51,.4));
  border:1px solid var(--hairline);border-left:3px solid var(--comet);
  border-radius:1rem;padding:1.25rem 1.4rem;margin:1.75rem 0;}
.callout.good{border-left-color:var(--aurora);}
.callout.note{border-left-color:var(--comet);}
.callout>:first-child{margin-top:0;}.callout>:last-child{margin-bottom:0;}
.todo{background:var(--comet);color:var(--on-comet);font-weight:700;padding:.05em .4em;border-radius:.3em;font-size:.95em;}

/* ---- legal / doc pages ---- */
.doc{padding:3rem 0 4.5rem;}
.doc .container{max-width:var(--measure);}
.doc h1{font-size:clamp(2rem,4.5vw,2.9rem);}
.doc .updated{font-family:var(--mono);font-size:.8rem;letter-spacing:.08em;color:var(--muted);
  text-transform:uppercase;margin:.25rem 0 2rem;}
.doc h2{font-size:1.4rem;font-weight:700;color:var(--comet);margin:2.5rem 0 .6rem;letter-spacing:-.01em;}
.doc h3{font-size:1.1rem;margin:1.8rem 0 .4rem;}
.doc p,.doc li{color:var(--mist);}
.doc ul,.doc ol{padding-left:1.35rem;}
.doc li{margin-bottom:.5rem;}
.doc strong{color:var(--starlight);}
.doc .lede{color:var(--haze);margin-bottom:1.5rem;}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:1.5rem;}
.crumbs a{color:var(--dust);}

/* steps list (numbered) */
.steps{counter-reset:step;list-style:none;padding-left:0;}
.steps li{counter-increment:step;position:relative;padding-left:2.6rem;margin-bottom:.9rem;}
.steps li::before{content:counter(step);position:absolute;left:0;top:0;width:1.8rem;height:1.8rem;
  border-radius:50%;background:var(--surface);color:var(--comet);font-family:var(--mono);font-size:.85rem;
  display:grid;place-items:center;}

/* tables */
.scroller{overflow-x:auto;margin:1.5rem 0;}
table{border-collapse:collapse;width:100%;min-width:26rem;}
th,td{text-align:left;padding:.7rem .9rem;border-bottom:1px solid var(--hairline);vertical-align:top;color:var(--mist);}
th{color:var(--comet);font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:400;}

/* ---- footer ---- */
.site-footer{border-top:1px solid var(--hairline);margin-top:2rem;padding:3rem 0 3.5rem;color:var(--dust);}
.footer-grid{display:flex;flex-wrap:wrap;gap:2rem;justify-content:space-between;align-items:flex-start;}
.footer-brand{display:inline-flex;align-items:center;gap:.6rem;color:var(--starlight);font-weight:900;}
.footer-brand img{width:1.6rem;height:1.6rem;}
.footer-links{display:flex;flex-wrap:wrap;gap:1.25rem;}
.footer-links a{color:var(--haze);font-size:.95rem;}
.footer-links a:hover{color:var(--comet);text-decoration:none;}
.footer-meta{margin-top:1.5rem;font-size:.85rem;color:var(--muted);line-height:1.6;}
.footer-meta a{color:var(--dust);}