/* Brainback site: same warm, cosy clay look as the app (tokens from UiKit.kt `BR`). */
@font-face{font-family:Fredoka;src:url(fonts/fredoka.ttf) format("truetype");font-weight:300 700;font-display:swap}
:root{
  --bg:#0F0A07;--surface:#1C140E;--surface-hi:#2B2018;--raised:#2A1E15;--well:#120C08;--border:#3A2A1C;
  --amber:#FFB547;--amber-hi:#FFD07A;--orange:#FF8A3D;--pink:#FF8FA8;--green:#7BE495;--red:#FF6B6B;
  --text:#FFF4E3;--muted:#C2AE96;--on-amber:#2B1A12;
  --r-card:24px;--r-btn:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.65 Fredoka,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background-image:radial-gradient(900px 480px at 50% -120px,rgba(255,138,61,.16),transparent 70%);background-repeat:no-repeat}
a{color:var(--amber);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--amber-hi)}
:focus-visible{outline:3px solid var(--amber-hi);outline-offset:3px;border-radius:8px}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}

/* top bar */
header.top{position:sticky;top:0;z-index:5;padding:12px 0;background:linear-gradient(var(--bg) 70%,transparent)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 10px 8px 14px;border-radius:999px;
  background:linear-gradient(180deg,#30241B,#1A120C);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 8px 24px rgba(0,0,0,.45);border:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:700;font-size:1.15rem}
.logo img{width:34px;height:34px}
.bar nav{display:flex;gap:4px;flex-wrap:wrap}
.bar nav a{color:var(--muted);text-decoration:none;font-weight:500;font-size:.95rem;padding:8px 14px;border-radius:999px}
.bar nav a:hover{color:var(--text);background:var(--raised)}
.bar nav a[aria-current=page]{color:var(--on-amber);background:linear-gradient(180deg,var(--amber-hi),var(--orange));font-weight:600}

/* clay surfaces */
.card{position:relative;background:linear-gradient(180deg,var(--surface-hi),var(--surface));border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;margin:20px 0;box-shadow:inset 0 1px 0 rgba(255,255,255,.07),inset 0 -6px 14px rgba(0,0,0,.25),0 14px 30px rgba(0,0,0,.4)}
.card h2,.card h3{margin-top:0}
.well{background:var(--well);border:1px solid var(--border);border-radius:18px;padding:16px 18px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid .card{margin:0}

/* type */
h1{font-size:clamp(2.2rem,6vw,3.4rem);line-height:1.1;margin:.3em 0 .4em;font-weight:700;letter-spacing:-.01em}
h2{font-size:1.5rem;line-height:1.25;margin:2.2em 0 .5em;font-weight:600}
h3{font-size:1.15rem;margin:1.4em 0 .3em;font-weight:600}
p,li{color:var(--text)}
.lead{font-size:1.2rem;color:var(--muted);max-width:34em}
.muted{color:var(--muted)}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;font-weight:600;color:var(--amber);margin-bottom:6px}
.amber{color:var(--amber)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 26px;border:0;border-radius:var(--r-btn);cursor:pointer;
  font:600 1.05rem Fredoka,sans-serif;color:var(--on-amber);text-decoration:none;
  background:linear-gradient(180deg,var(--amber-hi),var(--amber) 45%,var(--orange));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),inset 0 -4px 8px rgba(160,70,0,.35),0 8px 20px rgba(255,138,61,.25);transition:transform .12s,filter .12s}
.btn:hover{color:var(--on-amber);filter:brightness(1.06)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn.danger{color:#2B0A0A;background:linear-gradient(180deg,#FFB0A8,var(--red) 55%,#E04848)}
.btn.ghost{background:var(--raised);color:var(--text);box-shadow:inset 0 1px 0 rgba(255,255,255,.08);border:1px solid var(--border)}
.pill{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:var(--raised);border:1px solid var(--border);color:var(--muted);font-size:.95rem}

/* hero */
.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:28px;align-items:center;padding:36px 0 12px}
.hero-art{display:grid;place-items:center;gap:22px}
.hero-art .mascot{width:min(260px,60vw);filter:drop-shadow(0 18px 30px rgba(255,138,61,.3));animation:bob 5s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-8px)}}
@media (prefers-reduced-motion:reduce){.hero-art .mascot{animation:none}html{scroll-behavior:auto}}
@media (max-width:720px){.hero{grid-template-columns:1fr;text-align:left}.hero-art{order:-1;place-items:start}}
.island{display:inline-flex;align-items:center;gap:14px;padding:8px 18px 8px 10px;border-radius:999px;background:#000;border:1px solid #2a2a2a;box-shadow:0 10px 24px rgba(0,0,0,.6)}
.island img{width:30px;height:30px}
.island .gap{width:34px}
.island b{font-size:1.15rem;font-weight:700;color:var(--green)}
.island small{color:var(--muted);font-size:.9rem}

/* lists */
ul.clean{list-style:none;padding:0;margin:.5em 0}
ul.clean li{position:relative;padding-left:30px;margin:.55em 0}
ul.clean li::before{content:"";position:absolute;left:4px;top:.55em;width:14px;height:14px;border-radius:50%;background:radial-gradient(circle at 35% 30%,var(--amber-hi),var(--orange))}
ul.clean.no li::before{background:radial-gradient(circle at 35% 30%,#FFB0A8,var(--red))}
ol.steps{list-style:none;counter-reset:s;padding:0;margin:.5em 0}
ol.steps li{counter-increment:s;position:relative;padding:4px 0 4px 54px;margin:14px 0;min-height:40px}
ol.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:700;color:var(--on-amber);
  background:linear-gradient(180deg,var(--amber-hi),var(--orange));box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 4px 10px rgba(0,0,0,.4)}

/* privacy page */
.doc h2{scroll-margin-top:96px;padding-top:.2em;border-top:1px solid var(--border);margin-top:2.4em;padding-top:1.2em}
.doc h2:first-of-type{border-top:0}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}
.toc a{text-decoration:none;color:var(--muted);padding:6px 14px;border-radius:999px;background:var(--raised);border:1px solid var(--border);font-size:.9rem}
.toc a:hover{color:var(--text);border-color:var(--amber)}
.two{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media (max-width:640px){.two{grid-template-columns:1fr}}
.table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--border);border-radius:18px;overflow:hidden;font-size:.95rem}
.table th,.table td{text-align:left;padding:12px 14px;vertical-align:top;border-bottom:1px solid var(--border)}
.table th{background:var(--raised);color:var(--amber-hi);font-weight:600}
.table tr:last-child td{border-bottom:0}
.table td{background:var(--surface)}
@media (max-width:640px){
  .table,.table tbody,.table tr,.table td{display:block;width:100%}
  .table thead{display:none}
  .table tr{border-bottom:1px solid var(--border);padding:6px 0;background:var(--surface)}
  .table td{border:0;padding:4px 14px;background:transparent}
  .table td::before{content:attr(data-l);display:block;color:var(--amber);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase}
}

/* forms */
label{display:block;font-weight:600;margin:14px 0 6px}
input[type=text]{width:100%;min-height:54px;padding:0 16px;border-radius:16px;border:1px solid var(--border);background:var(--well);color:var(--text);
  font:500 1rem ui-monospace,Consolas,monospace;box-shadow:inset 0 3px 8px rgba(0,0,0,.5)}
input[type=text]:focus{border-color:var(--amber);outline:0;box-shadow:inset 0 3px 8px rgba(0,0,0,.5),0 0 0 3px rgba(255,181,71,.25)}
.check{display:flex;gap:12px;align-items:flex-start;margin:16px 0;font-weight:400}
.check input{width:22px;height:22px;margin-top:3px;accent-color:var(--amber);flex:none}
.notice{margin-top:16px;padding:14px 16px;border-radius:16px;border:1px solid var(--border);background:var(--well)}
.notice.ok{border-color:rgba(123,228,149,.5)}.notice.ok b{color:var(--green)}
.notice.err{border-color:rgba(255,107,107,.5)}.notice.err b{color:var(--red)}
[hidden]{display:none!important}

footer{margin:64px 0 40px;padding-top:24px;border-top:1px solid var(--border);color:var(--muted);font-size:.9rem}
footer .links{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:10px}
footer a{color:var(--muted)}footer a:hover{color:var(--amber)}

@media (max-width:520px){
  .logo span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .bar{padding:6px 8px 6px 10px}
  .bar nav{flex-wrap:nowrap}
  .bar nav a{padding:8px 11px;font-size:.9rem;white-space:nowrap}
  body{font-size:16px}
}