/* Layout: one column up to tablet width — header with stars, screen content, fixed bottom tab bar.
   Game screen: a big letter or picture on top, three big answer cards under it. */
:root{
  --bg:#FFF6EE; --surface:#FFFFFF; --surface-2:#F7ECDF; --ink:#26201C; --muted:#75695F; --line:#EEDCC8;
  --accent:#E8590C; --accent-ink:#FFFFFF; --accent-soft:#FFE6D5;
  --ok:#21A35B; --ok-soft:#DDF5E7; --bad:#E5484D; --bad-soft:#FDE4E4; --peek:#2F7FD8; --peek-soft:#E1EEFC;
  --star:#F5A524; --mid:#E5A000; --mid-soft:#FFF1CC;
  --ru:#D6336C; --en:#1C7ED6;
  --shadow:0 1px 2px rgba(38,32,28,.06),0 8px 24px rgba(38,32,28,.08);
  --f:"Nunito",-apple-system,system-ui,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#17151A; --surface:#211E25; --surface-2:#2B2730; --ink:#F1ECE8; --muted:#A79E98; --line:#36313B;
  --accent:#FF8A4C; --accent-ink:#2A1205; --accent-soft:#45291B;
  --ok:#4CD487; --ok-soft:#183A28; --bad:#FF7A7E; --bad-soft:#41202A; --peek:#6FB0FF; --peek-soft:#1C3150;
  --star:#FFC24D; --mid:#FFC24D; --mid-soft:#3D3214;
  --ru:#F06595; --en:#4DABF7;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#17151A; --surface:#211E25; --surface-2:#2B2730; --ink:#F1ECE8; --muted:#A79E98; --line:#36313B;
  --accent:#FF8A4C; --accent-ink:#2A1205; --accent-soft:#45291B;
  --ok:#4CD487; --ok-soft:#183A28; --bad:#FF7A7E; --bad-soft:#41202A; --peek:#6FB0FF; --peek-soft:#1C3150;
  --star:#FFC24D; --mid:#FFC24D; --mid-soft:#3D3214;
  --ru:#F06595; --en:#4DABF7;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35); color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
html,body{background:var(--bg)}
body{margin:0;padding-top:env(safe-area-inset-top,0px);color:var(--ink);font-family:var(--f);font-size:17px;line-height:1.4;font-weight:500;-webkit-tap-highlight-color:transparent}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:manipulation}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:720px;margin:0 auto;padding-inline:16px;padding-block:0 calc(96px + env(safe-area-inset-bottom,0px))}
body.ingame .wrap{padding-bottom:16px}
.loading{color:var(--muted);text-align:center;margin-top:30vh}
h1,h2,h3{margin:0;font-weight:900;line-height:1.15;text-wrap:balance}
h2{font-size:20px}
h3{font-size:17px}
.muted{color:var(--muted)}
.small{font-size:14px}
.emoji{font-family:"Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif;font-weight:400;line-height:1}

/* header */
header.top{position:sticky;top:0;z-index:5;background:var(--bg);padding-block:12px 10px;display:flex;align-items:center;gap:10px;min-height:60px}
.brand{font-weight:900;font-size:20px;letter-spacing:-.01em;color:var(--accent);display:flex;align-items:center;gap:8px}
.brand .logo{width:30px;height:30px;border-radius:9px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-size:16px;line-height:1;letter-spacing:-.04em}
.badges{margin-left:auto;display:flex;gap:6px}
.badge{display:flex;align-items:center;gap:5px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 11px;font-weight:800;font-size:15px;font-variant-numeric:tabular-nums}
.badge .ic{font-size:15px}
.demo-tag{font-size:12px;font-weight:800;color:#8A5A00;background:#FFE7B3;border-radius:6px;padding:2px 7px}
.iconbtn{width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;font-size:20px;flex:none}

/* bottom bar */
nav.bar{position:fixed;left:0;right:0;bottom:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:8px 12px calc(8px + env(safe-area-inset-bottom,0px))}
nav.bar .tabs{max-width:720px;margin:0 auto;display:flex;gap:6px}
.tab{flex:1;border:0;background:transparent;border-radius:14px;padding:8px 4px;display:flex;flex-direction:column;align-items:center;gap:2px;font-weight:800;font-size:13px;color:var(--muted)}
.tab .ic{font-size:22px;line-height:1}
.tab[aria-selected="true"]{background:var(--accent-soft);color:var(--accent)}

/* cards and controls */
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow);margin-bottom:14px}
.card h2{margin-bottom:12px}
.hello{margin:6px 0 16px}
.hello h1{font-size:28px}
.hello p{margin:4px 0 0;color:var(--muted)}
.label{font-size:13px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:16px 0 8px}
.label:first-of-type{margin-top:4px}
.row{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:2px solid var(--line);background:var(--surface);border-radius:16px;padding:10px 16px;font-weight:800;font-size:16px;min-height:48px;display:inline-flex;align-items:center;gap:8px}
.chip[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.chip .emoji{font-size:20px}
.langs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.lang{border:3px solid var(--line);background:var(--surface);border-radius:22px;padding:14px 10px;display:flex;flex-direction:column;align-items:center;gap:2px;box-shadow:var(--shadow)}
.lang .emoji{font-size:34px}
.lang b{font-weight:900;font-size:19px}
.lang span{font-weight:800;color:var(--muted);letter-spacing:.12em}
.lang[aria-pressed="true"].ru{border-color:var(--ru);background:color-mix(in srgb,var(--ru) 10%,var(--surface))}
.lang[aria-pressed="true"].en{border-color:var(--en);background:color-mix(in srgb,var(--en) 10%,var(--surface))}
.lang[aria-pressed="true"].ru b{color:var(--ru)} .lang[aria-pressed="true"].en b{color:var(--en)}
.picked{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.picked .lt{min-width:38px;height:38px;border-radius:12px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-weight:900;font-size:20px;padding:0 6px}
.btn{border:0;border-radius:18px;padding:14px 20px;font-weight:900;font-size:18px;min-height:56px;background:var(--surface-2);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn.primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 4px 0 color-mix(in srgb,var(--accent) 60%,#000)}
.btn.primary:active{transform:translateY(2px);box-shadow:0 2px 0 color-mix(in srgb,var(--accent) 60%,#000)}
.btn.ghost{background:transparent;border:2px solid var(--line)}
.btn.small{min-height:44px;font-size:16px;padding:8px 14px;border-radius:14px}
.btn.wide{width:100%}
.btn:disabled{opacity:.45;cursor:default;box-shadow:none}
.gobtn{margin-top:18px}
.shortcut{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:20px;padding:14px;text-align:left;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow);margin-bottom:14px}
.shortcut .emoji{font-size:30px}
.shortcut .t{flex:1;display:flex;flex-direction:column}
.shortcut b{font-weight:900}
.shortcut span{font-size:14px;color:var(--muted)}
.shortcut:disabled{opacity:.55;cursor:default}
.empty{color:var(--muted);font-size:15px;text-align:center;padding:12px}
.error{color:var(--bad);font-weight:700;font-size:15px;min-height:1.4em}
.field{display:block;margin-bottom:12px}
.field span{display:block;font-size:14px;font-weight:700;color:var(--muted);margin-bottom:4px}
.field input{width:100%;border:2px solid var(--line);background:var(--surface);border-radius:14px;padding:12px;font-size:18px}
.toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.toggle:first-of-type{border-top:0}
.toggle input{width:24px;height:24px;accent-color:var(--accent)}

/* login */
.login{max-width:380px;margin:8vh auto 0}
.login .hero{font-size:56px;text-align:center;margin-bottom:6px}
.login h1{text-align:center;font-size:30px;margin-bottom:6px}
.login p{text-align:center;color:var(--muted);margin:0 0 20px}

/* game */
.gamebar{display:flex;align-items:center;gap:10px;margin:4px 0 10px}
.progress{flex:1;height:14px;border-radius:999px;background:var(--surface-2);overflow:hidden}
.progress i{display:block;height:100%;background:var(--accent);border-radius:999px;transition:width .3s}
.counter{font-weight:900;font-variant-numeric:tabular-nums;min-width:56px;text-align:right}
.stage{background:var(--surface);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:16px 14px 14px;text-align:center}
.ask{font-weight:800;color:var(--muted);font-size:18px;margin:6px 0 0}
.show{border:0;background:transparent;padding:0;display:inline-flex;align-items:baseline;justify-content:center;gap:.06em;line-height:1;margin:0 auto}
.show.letter{font-weight:900;font-size:min(150px,34vw);color:var(--accent);letter-spacing:-.02em;padding-top:.14em}
.show.letter small{font-size:.62em;color:color-mix(in srgb,var(--accent) 70%,var(--ink))}
.show.picture{font-size:min(150px,36vw);padding:6px 0}
.show:active{transform:scale(.96)}
.feedback{min-height:32px;margin-top:8px;font-weight:900;font-size:20px}
.feedback.right{color:var(--ok)} .feedback.wrong{color:var(--bad)} .feedback.peek{color:var(--peek)}
.feedback .w{font-size:26px;color:var(--ink)}
.feedback .w b{color:var(--accent)}
.options{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.opt{border:3px solid var(--line);background:var(--surface);border-radius:24px;min-height:150px;padding:10px 6px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;box-shadow:0 4px 0 var(--line)}
.opt:active{transform:translateY(2px);box-shadow:0 2px 0 var(--line)}
.opt .emoji{font-size:min(84px,19vw)}
.opt .lt{font-weight:900;font-size:min(76px,17vw);line-height:1}
.opt .lt small{font-size:.62em;color:var(--muted)}
.opt .cap{font-weight:800;font-size:15px;min-height:1.3em;color:var(--muted);overflow-wrap:anywhere}
.opt.right{border-color:var(--ok);background:var(--ok-soft);box-shadow:0 4px 0 color-mix(in srgb,var(--ok) 55%,#000)}
.opt.right .cap{color:var(--ok)}
.opt.wrong{border-color:var(--bad);background:var(--bad-soft);opacity:.65;animation:shake .35s}
.opt.reveal{border-color:var(--peek);background:var(--peek-soft)}
.opt:disabled{cursor:default}
@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
.gameactions{display:flex;gap:8px;margin-top:12px}
.gameactions .btn{flex:1}

/* result */
.result{text-align:center}
.result .big{font-size:64px;line-height:1;margin:8px 0}
.result h1{font-size:30px}
.result .score{font-size:20px;font-weight:800;margin:8px 0 16px}
.list{display:flex;flex-direction:column;gap:6px;text-align:left}
.li{display:flex;align-items:center;gap:10px;background:var(--surface-2);border-radius:14px;padding:8px 12px}
.li .mark{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;font-weight:900;flex:none;color:#fff}
.li .mark.ok{background:var(--ok)} .li .mark.again{background:var(--mid)} .li .mark.miss{background:var(--bad)}
.li .pic{font-size:30px}
.li .q{flex:1;font-weight:800;font-size:18px;overflow-wrap:anywhere}
.li .q b{color:var(--accent)}
.li .given{font-size:14px;color:var(--muted)}
.li .given .emoji{font-size:22px;vertical-align:-3px}
.resultactions{display:flex;flex-direction:column;gap:8px;margin-top:16px}

/* progress */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:12px 8px;text-align:center;box-shadow:var(--shadow)}
.tile .v{font-size:28px;font-weight:900;font-variant-numeric:tabular-nums;line-height:1.1}
.tile .k{font-size:13px;color:var(--muted);font-weight:700}
.bars{display:grid;grid-template-columns:repeat(14,1fr);gap:4px;align-items:end;height:110px}
.bars .col{display:flex;flex-direction:column;justify-content:flex-end;height:100%;border-radius:6px;background:var(--surface-2);overflow:hidden}
.bars .col i{display:block;background:var(--accent)}
.bars .col i.miss{background:color-mix(in srgb,var(--accent) 35%,var(--surface-2))}
.bars-x{display:grid;grid-template-columns:repeat(14,1fr);gap:4px;font-size:11px;color:var(--muted);text-align:center;margin-top:4px;font-variant-numeric:tabular-nums}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:6px}
.cell{border:2px solid var(--line);background:var(--surface);border-radius:14px;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:900;font-size:22px;line-height:1.05;padding:2px}
.cell small{font-size:11px;font-weight:800;color:var(--muted)}
.cell.good{border-color:var(--ok);background:var(--ok-soft)}
.cell.mid{border-color:var(--mid);background:var(--mid-soft)}
.cell.low{border-color:var(--bad);background:var(--bad-soft)}
.cell.none{color:var(--muted);opacity:.7}
.cell.off{opacity:.3;border-style:dashed}
button.cell[aria-pressed="true"]{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}
button.cell:disabled{cursor:default}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted);margin-top:10px}
.legend i{display:inline-block;width:12px;height:12px;border-radius:4px;margin-right:5px;vertical-align:-1px;border:2px solid}
.legend .good{border-color:var(--ok);background:var(--ok-soft)} .legend .mid{border-color:var(--mid);background:var(--mid-soft)} .legend .low{border-color:var(--bad);background:var(--bad-soft)}
.pairs{display:flex;flex-wrap:wrap;gap:8px}
.pair{display:flex;align-items:center;gap:6px;background:var(--surface-2);border-radius:14px;padding:8px 12px;font-weight:900;font-size:20px}
.pair span{color:var(--muted);font-size:14px;font-weight:800}
.seg{display:inline-flex;gap:4px;background:var(--surface-2);border-radius:14px;padding:4px;margin-bottom:12px}
.seg button{border:0;background:transparent;border-radius:10px;padding:6px 12px;font-weight:800;font-size:15px;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}

/* parent */
.kidhead{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.kidhead .av{width:48px;height:48px;border-radius:16px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-weight:900;font-size:22px}
.kidhead h2{margin:0}
.kidhead .sp{flex:1}

/* sheet */
.sheet-bg{position:fixed;inset:0;z-index:20;background:rgba(10,12,20,.45);display:flex;align-items:flex-end;justify-content:center}
.sheet{width:100%;max-width:720px;max-height:92vh;overflow:auto;background:var(--bg);border-radius:26px 26px 0 0;padding:18px 16px calc(18px + env(safe-area-inset-bottom,0px))}
.sheet .sh{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.sheet .sh h2{flex:1}

/* confetti */
#fx{position:fixed;inset:0;pointer-events:none;z-index:30;overflow:hidden}
#fx i{position:absolute;top:-20px;width:10px;height:14px;border-radius:3px;animation:fall 1.8s ease-in forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(720deg);opacity:.6}}
.pop{animation:pop .35s ease-out}
@keyframes pop{0%{transform:scale(.7)}70%{transform:scale(1.12)}100%{transform:scale(1)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}#fx{display:none}}

@media (max-width:420px){
  .opt{min-height:118px;border-radius:20px}
  .options{gap:8px}
  .badge{padding:4px 9px;font-size:14px}
  .tile .v{font-size:24px}
}
@media (min-width:700px){
  .opt{min-height:190px}
}