:root{
  --space:#03050b; --bg:#060a13; --panel:rgba(10,16,28,.82); --panel2:rgba(14,22,38,.92);
  --card:#0c1322; --card2:#111b2e;
  --line:rgba(120,165,215,.14); --line2:rgba(130,180,235,.28);
  --ink:#eaf2fb; --ink2:#9db2cd; --ink3:#66809f;
  --sky:#38bdf8; --sky2:#7dd3fc; --grn:#34d399; --amb:#fbbf24; --red:#fb7185; --vio:#a78bfa;
  --r:16px;
  --display:'Sora','Segoe UI',system-ui,sans-serif;
  --body:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
  --blur:saturate(150%) blur(16px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0}
body{
  background:var(--space); color:var(--ink); overflow:hidden;
  font:15px/1.55 var(--body); -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3{margin:0;font-family:var(--display);letter-spacing:-.025em;font-weight:700}
em{font-style:normal;background:linear-gradient(100deg,var(--sky2),var(--grn));
   -webkit-background-clip:text;background-clip:text;color:transparent}
kbd{font:inherit;font-size:.78em;opacity:.5;border:1px solid currentColor;border-radius:4px;
    padding:0 4px;margin-left:6px;vertical-align:2px}

.screen{position:fixed;inset:0;display:none;flex-direction:column}
.screen.active{display:flex;animation:fadeUp .32s cubic-bezier(.2,.8,.3,1)}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------------- boot ---------------- */
.boot{position:fixed;inset:0;z-index:100;display:grid;place-items:center;background:var(--space);
      transition:opacity .5s}
.boot.gone{opacity:0;pointer-events:none}
#bootMap{position:absolute;inset:0;width:100%;height:100%}
.boot-inner{position:relative;text-align:center;z-index:2;
  background:radial-gradient(60% 60% at 50% 50%,rgba(3,5,11,.85),transparent 75%);padding:44px}
.boot-bar{width:180px;height:3px;border-radius:99px;background:rgba(255,255,255,.09);
  margin:20px auto 12px;overflow:hidden}
#bootFill{height:100%;width:6%;background:linear-gradient(90deg,var(--sky),var(--grn));
  border-radius:99px;transition:width .45s ease}
#bootMsg{margin:0;color:var(--ink3);font-size:13px;letter-spacing:.03em}

/* ---------------- buttons ---------------- */
.primary-btn{
  position:relative;background:linear-gradient(180deg,#5cc9fb,#1b8fd4);color:#02121f;
  font-family:var(--display);font-weight:700;padding:14px 22px;border-radius:13px;
  letter-spacing:-.01em;box-shadow:0 8px 22px rgba(56,189,248,.28),inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .09s,filter .16s,box-shadow .16s;
}
.primary-btn:hover{filter:brightness(1.07);box-shadow:0 10px 28px rgba(56,189,248,.36)}
.primary-btn:active{transform:translateY(1px)}
.primary-btn:disabled{background:rgba(28,42,66,.85);color:var(--ink3);box-shadow:none;cursor:default;
  border:1px solid var(--line)}
.secondary-btn{background:rgba(20,32,52,.7);border:1px solid var(--line2);color:var(--ink);
  padding:14px 22px;border-radius:13px;font-weight:600;backdrop-filter:var(--blur);transition:.16s}
.secondary-btn:hover{background:rgba(28,44,70,.85)}
.ghost-btn{background:rgba(12,19,34,.6);border:1px solid var(--line);color:var(--ink2);
  padding:10px 15px;border-radius:11px;font-weight:600;font-size:14px;transition:.16s}
.ghost-btn:hover{border-color:var(--line2);color:var(--ink)}
.ghost-btn.danger{color:var(--red);border-color:rgba(251,113,133,.24)}
.wide{width:100%}
.big{padding:15px 26px;font-size:16px}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;
  background:var(--panel);border:1px solid var(--line);backdrop-filter:var(--blur)}
.icon-btn svg{width:20px;height:20px}

/* ---------------- home ---------------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:calc(13px + var(--safe-t)) 20px 13px;border-bottom:1px solid var(--line);
  background:rgba(4,7,14,.86);backdrop-filter:var(--blur);flex:0 0 auto;z-index:8;
}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-size:19px;
  font-weight:600;letter-spacing:-.035em;color:var(--sky)}
.brand span{color:var(--ink)}
.brand b{background:linear-gradient(100deg,var(--sky2),var(--grn));-webkit-background-clip:text;
  background-clip:text;color:transparent;font-weight:800}
.brand.big{font-size:34px}
.logo{width:26px;height:26px;color:var(--sky)}

.home-scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:40px}

.hero{position:relative;max-width:1160px;margin:0 auto;padding:0 20px;min-height:min(460px,62vh);
  display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:20px}
.hero-globe{position:absolute;right:0;top:50%;transform:translateY(-50%);
  width:min(500px,46%);aspect-ratio:1;pointer-events:none;
  -webkit-mask-image:radial-gradient(closest-side,#000 62%,transparent 100%);
  mask-image:radial-gradient(closest-side,#000 62%,transparent 100%)}
.hero-copy{position:relative;z-index:2;padding:52px 0 34px}
.eyebrow{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--sky2);background:rgba(56,189,248,.1);
  border:1px solid rgba(56,189,248,.22);border-radius:99px;padding:5px 12px;margin-bottom:16px}
.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.05;margin-bottom:14px;font-weight:800}
.hero p{color:var(--ink2);max-width:440px;margin:0;font-size:clamp(15px,1.6vw,17px)}
.hero-actions{display:flex;gap:11px;flex-wrap:wrap;margin-top:26px}
.hero-actions .primary-btn{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:186px}
.hero-actions small{font-size:10.5px;font-weight:600;opacity:.6;letter-spacing:.09em;text-transform:uppercase}
.hero-stats{display:flex;gap:20px;margin-top:24px;color:var(--ink3);font-size:12.5px;flex-wrap:wrap}
.hero-stats b{color:var(--ink);font-family:var(--display);font-size:17px;display:block;font-weight:700}

.controls-row{
  max-width:1160px;margin:0 auto;padding:10px 20px 16px;display:flex;gap:12px;
  align-items:center;flex-wrap:wrap;position:sticky;top:0;z-index:6;
  background:linear-gradient(180deg,var(--bg) 58%,rgba(6,10,19,0));
}
.search-wrap{position:relative;flex:1;min-width:240px}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--ink3)}
#search{width:100%;background:var(--card);border:1px solid var(--line);border-radius:13px;
  padding:13px 15px 13px 40px;color:var(--ink);font-size:15px;font-family:var(--body);outline:none;transition:.16s}
#search:focus{border-color:rgba(56,189,248,.5);box-shadow:0 0 0 3px rgba(56,189,248,.12)}
#search::placeholder{color:var(--ink3)}
.seg{display:flex;align-items:center;background:var(--card);border:1px solid var(--line);
  border-radius:13px;padding:4px;gap:2px}
.seg-label{font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink3);padding:0 9px 0 8px}
.seg button{padding:8px 15px;border-radius:9px;font-weight:600;font-size:14px;color:var(--ink2);transition:.15s}
.seg button.on{background:rgba(56,189,248,.14);color:var(--sky2);box-shadow:inset 0 0 0 1px rgba(56,189,248,.28)}

.catalog{max-width:1160px;margin:0 auto;padding:0 20px}
.group-title{display:flex;align-items:center;gap:12px;margin:30px 0 14px;
  font-family:var(--display);font-size:12px;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink3)}
.group-title:after{content:"";flex:1;height:1px;background:var(--line)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:12px}

.cat{
  position:relative;text-align:left;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:0;overflow:hidden;transition:.18s cubic-bezier(.2,.8,.3,1);
  display:flex;flex-direction:column;
}
.cat:hover{border-color:var(--line2);transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(0,0,0,.45),0 0 0 1px rgba(56,189,248,.12)}
.cat:active{transform:translateY(0)}
.cat-thumb{position:relative;height:96px;background:#040910;overflow:hidden;flex:0 0 auto}
.cat-thumb canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.cat-thumb:after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,var(--card) 100%)}
.cat-body{padding:11px 14px 13px;position:relative}
.cat h3{font-size:15px;margin-bottom:3px;padding-right:34px;line-height:1.25}
.cat p{margin:0;font-size:12px;color:var(--ink3);line-height:1.4}
.cat .meta{display:flex;gap:8px;align-items:center;margin-top:9px;font-size:11.5px;color:var(--ink3)}
.pill{background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.2);color:var(--sky2);
  border-radius:99px;padding:2px 9px;font-weight:600;font-size:11px}
.best{color:var(--amb);font-weight:600}
.mastery{position:absolute;right:11px;top:10px;width:32px;height:32px}
.mastery text{font-size:10px;font-weight:700;fill:var(--ink2);font-family:var(--display)}
.study-link{
  position:absolute;right:8px;top:8px;display:none;font-size:10.5px;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink2);padding:5px 10px;border-radius:8px;
  background:rgba(4,8,16,.72);border:1px solid var(--line);backdrop-filter:blur(6px);
  opacity:0;transition:.16s;z-index:3}
.cat:hover .study-link,.cat:focus-within .study-link{opacity:1}
.study-link:hover{color:var(--sky2);border-color:var(--line2)}
@media(hover:none){.study-link{opacity:1}}
.foot{max-width:1160px;margin:38px auto 0;padding:22px 20px;border-top:1px solid var(--line);
  color:var(--ink3);font-size:12.5px;text-align:center}
.foot b{color:var(--ink2);font-weight:600}
.empty{padding:44px 0;text-align:center;color:var(--ink3)}

/* ---------------- game ---------------- */
#map,#studyMap{position:absolute;inset:0;width:100%;height:100%;touch-action:none;display:block;cursor:crosshair}
.vignette{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 85% at 50% 45%,transparent 42%,rgba(2,4,9,.55) 100%)}
.game-top{position:absolute;top:calc(11px + var(--safe-t));left:13px;right:13px;z-index:6;
  display:flex;align-items:center;gap:12px;pointer-events:none}
.game-top>*{pointer-events:auto}
.pips{flex:1;display:flex;gap:4px;align-items:center;height:20px}
.pip{flex:1;height:4px;border-radius:99px;background:rgba(255,255,255,.13);
  box-shadow:0 0 0 1px rgba(0,0,0,.3);transition:.4s cubic-bezier(.2,.8,.3,1)}
.pip.on{background:linear-gradient(90deg,var(--sky),var(--grn));box-shadow:0 0 9px rgba(56,189,248,.55)}
.pip.mid{background:var(--amb);box-shadow:0 0 9px rgba(251,191,36,.5)}
.pip.bad{background:var(--red);box-shadow:0 0 9px rgba(251,113,133,.45)}
.pip.now{background:rgba(255,255,255,.4);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:.45}50%{opacity:1}}
.score-chip{display:flex;align-items:baseline;gap:5px;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:7px 12px;backdrop-filter:var(--blur);font-variant-numeric:tabular-nums}
.score-chip b{font-size:16px;font-family:var(--display);font-weight:700}
.score-chip small{font-size:9.5px;color:var(--ink3);text-transform:uppercase;letter-spacing:.09em}
.study-title{flex:1;text-align:center;font-family:var(--display);font-weight:700;font-size:15px;
  text-shadow:0 2px 12px #000}

.prompt{position:absolute;top:calc(62px + var(--safe-t));left:50%;transform:translateX(-50%);z-index:5;
  width:min(580px,calc(100% - 26px));text-align:center;background:var(--panel2);
  border:1px solid var(--line2);border-radius:var(--r);padding:13px 20px 14px;
  backdrop-filter:var(--blur);box-shadow:0 16px 42px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.06);
  animation:promptIn .4s cubic-bezier(.2,.9,.3,1.1)}
@keyframes promptIn{from{opacity:0;transform:translate(-50%,-10px)}to{opacity:1;transform:translate(-50%,0)}}
.prompt-kicker{display:flex;justify-content:space-between;gap:10px;font-size:10.5px;font-weight:700;
  letter-spacing:.13em;text-transform:uppercase;color:var(--ink3);margin-bottom:6px}
.prompt h2{font-size:clamp(21px,4.4vw,30px);line-height:1.12;font-weight:700}
.prompt-hint{margin:6px 0 0;font-size:12.5px;color:var(--ink3)}

.map-tools{position:absolute;right:13px;bottom:calc(88px + var(--safe-b));z-index:6;
  display:flex;flex-direction:column;gap:7px;align-items:flex-end}
.tool{min-width:42px;height:42px;padding:0 12px;border-radius:12px;background:var(--panel);
  border:1px solid var(--line);backdrop-filter:var(--blur);font-weight:700;font-size:14px;
  color:var(--ink2);display:flex;align-items:center;justify-content:center;gap:7px;transition:.16s}
.tool:hover{color:var(--ink);border-color:var(--line2);background:var(--panel2)}
.wide-tool{font-size:12.5px;font-family:var(--display);letter-spacing:.01em}
.ti{width:17px;height:17px;flex:0 0 auto}

.game-bottom{position:absolute;left:13px;right:13px;bottom:calc(15px + var(--safe-b));z-index:6}
.game-bottom .primary-btn{max-width:520px;margin:0 auto;display:block}

.result-card{position:absolute;left:13px;right:13px;bottom:calc(15px + var(--safe-b));z-index:7;
  max-width:520px;margin:0 auto;background:var(--panel2);border:1px solid var(--line2);
  border-radius:18px;padding:0 17px 16px;backdrop-filter:var(--blur);
  box-shadow:0 22px 54px rgba(0,0,0,.68),inset 0 1px 0 rgba(255,255,255,.07);
  display:none;overflow:hidden}
.result-card.show{display:block;animation:pop .34s cubic-bezier(.2,.9,.3,1.25)}
@keyframes pop{from{opacity:0;transform:translateY(20px) scale(.96)}to{opacity:1;transform:none}}
.rc-bar{height:3px;background:rgba(255,255,255,.08);margin:0 -17px 14px;border-radius:0}
#rcFill{height:100%;width:0;background:linear-gradient(90deg,var(--sky),var(--grn));
  transition:width .8s cubic-bezier(.2,.85,.3,1)}
.result-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:9px}
.verdict{font-family:var(--display);font-size:12.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.pts{font-family:var(--display);font-size:25px;font-weight:800;font-variant-numeric:tabular-nums}
.result-name{font-family:var(--display);font-size:19px;font-weight:700;margin-bottom:3px}
.result-fact{font-size:13px;color:var(--ink2);margin-bottom:8px}
.result-dist{font-size:13px;color:var(--ink3);margin-bottom:14px;font-variant-numeric:tabular-nums}
.v-perfect{color:var(--grn)}.v-great{color:#86efac}.v-good{color:var(--amb)}.v-far{color:var(--red)}

/* ---------------- results / stats ---------------- */
#results,#stats{overflow-y:auto;
  background:radial-gradient(130% 75% at 50% 0%,#0d2440 0%,#060b16 52%,var(--space) 100%)}
.results-inner{max-width:560px;width:100%;margin:0 auto;
  padding:calc(34px + var(--safe-t)) 20px calc(40px + var(--safe-b));text-align:center}
.rank-wrap{position:relative;width:120px;height:120px;margin:0 auto 16px}
.rank-ring{position:absolute;inset:0;width:120px;height:120px}
#rankArc{transition:stroke-dasharray 1.1s cubic-bezier(.2,.85,.3,1)}
.rank-badge{position:absolute;inset:20px;border-radius:50%;display:grid;place-items:center;
  font-family:var(--display);font-size:34px;font-weight:800;
  background:radial-gradient(70% 70% at 35% 25%,#17324f,#0a1424);color:var(--sky2);
  box-shadow:0 0 40px rgba(56,189,248,.25),inset 0 1px 0 rgba(255,255,255,.1)}
#results h2,#stats h2{font-size:27px;margin-bottom:10px}
.big-score{display:flex;align-items:baseline;justify-content:center;gap:9px;margin:8px 0 10px;
  font-variant-numeric:tabular-nums;font-family:var(--display)}
.big-score b{font-size:50px;letter-spacing:-.035em;font-weight:800;
  background:linear-gradient(160deg,#fff,#9fd4f5);-webkit-background-clip:text;background-clip:text;color:transparent}
.big-score span{color:var(--ink3);font-size:15px;font-weight:500}
.results-sub{color:var(--ink2);margin:0 0 24px;font-size:14px}

.round-list{text-align:left;display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.round-row{display:flex;align-items:center;gap:12px;text-align:left;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:11px 14px;transition:.15s;animation:rowIn .4s backwards}
@keyframes rowIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}
button.round-row:hover{border-color:var(--line2);background:var(--card2)}
.round-row .dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto}
.round-row .nm{flex:1;font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.round-row .ds{font-size:12px;color:var(--ink3);font-variant-numeric:tabular-nums}
.round-row .pt{font-family:var(--display);font-weight:700;font-size:14px;
  font-variant-numeric:tabular-nums;min-width:54px;text-align:right}
.results-actions{display:flex;flex-direction:column;gap:9px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:9px}

.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}
.stat-box{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:15px 10px}
.stat-box b{display:block;font-family:var(--display);font-size:25px;font-variant-numeric:tabular-nums;font-weight:700}
.stat-box span{font-size:10.5px;color:var(--ink3);text-transform:uppercase;letter-spacing:.09em}

/* ---------------- study ---------------- */
.study-list{position:absolute;left:13px;bottom:calc(74px + var(--safe-b));z-index:5;
  max-width:230px;max-height:42vh;overflow-y:auto;background:var(--panel);
  border:1px solid var(--line);border-radius:13px;padding:9px;backdrop-filter:var(--blur);
  font-size:12.5px;line-height:1.9;color:var(--ink2)}
.study-list button{display:block;width:100%;text-align:left;padding:3px 8px;border-radius:7px;transition:.13s}
.study-list button:hover{background:rgba(56,189,248,.13);color:var(--sky2)}

/* ---------------- toast ---------------- */
.toast{position:fixed;left:50%;bottom:calc(94px + var(--safe-b));transform:translate(-50%,18px);
  background:var(--panel2);border:1px solid var(--line2);border-radius:12px;padding:11px 18px;
  font-size:14px;z-index:50;opacity:0;pointer-events:none;transition:.28s;backdrop-filter:var(--blur)}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:900px){
  .hero{grid-template-columns:1fr;min-height:0;text-align:center;justify-items:center}
  .hero-globe{position:relative;right:auto;top:auto;transform:none;width:min(260px,58vw);
    margin:22px auto -8px;order:-1}
  .hero-copy{padding:26px 0 22px;text-align:center}
  .hero p{margin:0 auto}
  .hero-actions,.hero-stats{justify-content:center}
}
@media(max-width:900px){
  /* blur is one of the most expensive things a phone GPU can be asked to do */
  :root{--blur:saturate(140%) blur(9px)}
  /* keep the browser from laying out and painting 60 offscreen map tiles */
  .cat{content-visibility:auto;contain-intrinsic-size:auto 196px}
  .tool{min-width:46px;height:46px}
  .icon-btn{width:44px;height:44px}
  .map-tools{gap:8px}
}
@media(max-width:560px){
  /* while the result card is up there is no room for the zoom stack */
  #game.revealing .map-tools .tool:not(.wide-tool){display:none}
  .grid{grid-template-columns:1fr 1fr;gap:10px}
  .cat-thumb{height:74px}
  .cat h3{font-size:13.5px;padding-right:30px}
  .cat p{font-size:11px}
  .cat-body{padding:9px 11px 11px}
  .study-list{max-width:165px;font-size:11.5px}
  .seg-label{display:none}
  .hero h1{font-size:29px}
}
@media(max-width:380px){.grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* ---------------- learning: streak, due card, learn screen ---------------- */
.top-right{display:flex;align-items:center;gap:10px}
.streak{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;color:var(--amb);
  background:rgba(251,191,36,.1);border:1px solid rgba(251,191,36,.24);border-radius:99px;
  padding:6px 12px;font-weight:600}
.streak b{font-family:var(--display);font-size:14px;font-weight:800}

.due-wrap{max-width:1160px;margin:0 auto;padding:4px 20px 0}
.due-card{width:100%;display:flex;align-items:center;gap:15px;text-align:left;
  background:linear-gradient(100deg,rgba(251,191,36,.1),rgba(56,189,248,.07));
  border:1px solid rgba(251,191,36,.3);border-radius:var(--r);padding:14px 16px;transition:.18s}
.due-card:hover{border-color:rgba(251,191,36,.55);transform:translateY(-1px);
  box-shadow:0 12px 30px rgba(0,0,0,.4)}
.due-ring{position:relative;width:44px;height:44px;flex:0 0 auto}
.due-ring svg{position:absolute;inset:0;width:44px;height:44px}
.due-ring span{position:absolute;inset:0;display:grid;place-items:center;
  font-family:var(--display);font-weight:800;font-size:15px;color:var(--amb)}
.due-text{flex:1;min-width:0}
.due-text b{display:block;font-family:var(--display);font-size:16px}
.due-text span{font-size:12.5px;color:var(--ink2)}
.due-go{width:20px;height:20px;color:var(--ink3);flex:0 0 auto}

.cat-actions{position:absolute;right:8px;top:8px;display:flex;gap:6px;z-index:3;
  opacity:0;transition:.16s}
.cat:hover .cat-actions,.cat:focus-within .cat-actions{opacity:1}
@media(hover:none){.cat-actions{opacity:1}}
.chip{font-size:10.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
  color:var(--ink2);padding:5px 10px;border-radius:8px;background:rgba(4,8,16,.75);
  border:1px solid var(--line);backdrop-filter:blur(6px);transition:.15s}
.chip:hover{color:var(--sky2);border-color:var(--line2)}
.chip.go{color:var(--grn);border-color:rgba(52,211,153,.35);background:rgba(6,20,16,.8)}
.cat-bar{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.07)}
.cat-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--sky),var(--grn));
  border-radius:0 2px 2px 0;transition:width .5s}

.learn-dots{flex:1;display:flex;gap:5px;align-items:center;justify-content:center;
  flex-wrap:wrap;max-height:22px;overflow:hidden}
.ldot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.16);
  box-shadow:0 0 0 1px rgba(0,0,0,.35);transition:.35s}
.ldot.l1{background:#475f7d}.ldot.l2{background:#38bdf8}.ldot.l3{background:#7dd3fc}
.ldot.l4{background:#5eead4}.ldot.done{background:var(--grn);box-shadow:0 0 8px rgba(52,211,153,.6)}
.ldot.now{transform:scale(1.5)}
.learn-level{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3)}
.learn-elab{color:var(--sky2);font-size:12.5px;margin-top:-4px}
#learnMap{position:absolute;inset:0;width:100%;height:100%;touch-action:none;display:block;cursor:crosshair}
.v-intro{color:var(--sky2)}

.sub-h{font-family:var(--display);font-size:12px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink3);margin:22px 0 10px;text-align:left}
.retention{display:flex;gap:4px;margin-bottom:6px;border-radius:99px;overflow:hidden;height:12px;
  background:var(--card);border:1px solid var(--line)}
.retention i{display:block;height:100%}
.ret-key{display:flex;gap:14px;justify-content:center;font-size:11.5px;color:var(--ink3);
  margin-bottom:6px;flex-wrap:wrap}
.ret-key span{display:inline-flex;align-items:center;gap:5px}
.ret-key em{width:8px;height:8px;border-radius:2px;display:inline-block}

/* ---------------- setup sheet / hotseat ---------------- */
/* an author display rule beats the UA [hidden] rule, so say it explicitly */
.sheet-wrap[hidden],.vs-strip[hidden],.due-wrap[hidden]{display:none!important}
.sheet-wrap{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:18px;
  background:rgba(2,5,11,.72);backdrop-filter:blur(6px);animation:fadeUp .22s}
.sheet{width:min(460px,100%);max-height:92vh;overflow-y:auto;background:var(--panel2);
  border:1px solid var(--line2);border-radius:20px;padding:20px;
  box-shadow:0 30px 70px rgba(0,0,0,.7);animation:pop .3s cubic-bezier(.2,.9,.3,1.2)}
.sheet-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:16px}
.sheet-kicker{font-size:10.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--sky2)}
.sheet h2{font-size:21px;margin-top:3px}
.opt-label{display:block;font-size:10.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink3);margin:15px 0 7px}
.opt-row{display:flex;gap:7px}
.opt-row.col{flex-direction:column}
.opt-row button{flex:1;padding:11px 12px;border-radius:11px;background:var(--card);
  border:1px solid var(--line);color:var(--ink2);font-weight:600;font-size:14px;transition:.15s;text-align:center}
.opt-row.col button{text-align:left}
.opt-row button:hover{border-color:var(--line2);color:var(--ink)}
.opt-row button.on{background:rgba(56,189,248,.14);border-color:rgba(56,189,248,.45);color:var(--sky2)}
.opt-row button b{display:block;font-family:var(--display);font-size:14px;font-weight:700}
.opt-row button span{display:block;font-size:12px;color:var(--ink3);font-weight:400;margin-top:2px}
.opt-row button.on span{color:var(--ink2)}
.name-row{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:8px}
.name-row input{background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:10px 12px;color:var(--ink);font:inherit;font-size:14px;outline:none;min-width:0}
.name-row input:focus{border-color:rgba(56,189,248,.5)}
#setupStart{margin-top:20px}

.pass-sheet{text-align:center}
.pass-avatar{width:72px;height:72px;border-radius:50%;margin:4px auto 14px;display:grid;place-items:center;
  font-family:var(--display);font-size:30px;font-weight:800;color:#04121e}
.pass-sheet h2{font-size:25px;margin-bottom:10px}
.pass-warn{color:var(--amb);font-size:15px;margin:0 0 6px}
.pass-warn b{color:var(--amb)}
.pass-sub{color:var(--ink3);font-size:13px;margin:0 0 20px}

.vs-strip{position:absolute;top:calc(58px + var(--safe-t));left:50%;transform:translateX(-50%);
  z-index:6;display:flex;gap:7px;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:6px 8px;backdrop-filter:var(--blur);max-width:calc(100% - 26px);overflow-x:auto}
.vs-chip{display:flex;align-items:center;gap:6px;padding:4px 9px;border-radius:8px;font-size:12.5px;
  white-space:nowrap;color:var(--ink2)}
.vs-chip.now{background:rgba(56,189,248,.16);color:var(--ink);box-shadow:inset 0 0 0 1px rgba(56,189,248,.3)}
.vs-chip i{width:8px;height:8px;border-radius:50%;display:inline-block}
.vs-chip b{font-family:var(--display);font-variant-numeric:tabular-nums}
.game.vs .prompt{top:calc(104px + var(--safe-t))}
#game.vs .prompt{top:calc(106px + var(--safe-t))}