/* Layout: teacher library (folder rail + set grid) → set editor (stacked question cards with live maths preview) → pupil-view play screen (HUD bar + one big question card) */
:root{
  --paper:#f3f5fa; --surface:#ffffff; --sunk:#e9edf6; --line:#d9dfec;
  --ink:#18203a; --muted:#5b6582;
  --accent:#ffb81c; --accent-deep:#c98a00; --on-accent:#18203a;
  --good:#16936b; --good-soft:#d8f3e8; --bad:#d5482a; --bad-soft:#fbe1da;
  --a1:#e2552f; --a2:#2c74e0; --a3:#14986f; --a4:#8a55d4;
  --display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:"Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --mono:"JetBrains Mono", Consolas, "Courier New", monospace;
  --r:14px;
  --water-top:#e3f3fc; --water-bottom:#b8def3; --wave:#9fd0ec;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#10141e; --surface:#191f2d; --sunk:#141a26; --line:#2a3246;
  --ink:#e9ecf5; --muted:#9aa3bb; --accent:#ffbf33; --accent-deep:#ffd77a; --on-accent:#18203a;
  --good:#3fcf9a; --good-soft:#163a2f; --bad:#ff7a5c; --bad-soft:#41221c;
  --a1:#ec6a45; --a2:#4a8cf0; --a3:#2bb487; --a4:#a173e6; --water-top:#0e2131; --water-bottom:#081723; --wave:#123049; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#10141e; --surface:#191f2d; --sunk:#141a26; --line:#2a3246;
  --ink:#e9ecf5; --muted:#9aa3bb; --accent:#ffbf33; --accent-deep:#ffd77a; --on-accent:#18203a;
  --good:#3fcf9a; --good-soft:#163a2f; --bad:#ff7a5c; --bad-soft:#41221c;
  --a1:#ec6a45; --a2:#4a8cf0; --a3:#2bb487; --a4:#a173e6; --water-top:#0e2131; --water-bottom:#081723; --wave:#123049; color-scheme:dark}
*{box-sizing:border-box}
html,body{min-height:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.5;padding:0 16px}
.wrap{max-width:1120px;margin:0 auto;padding-block:20px 60px}
h1,h2,h3{font-family:var(--display);line-height:1.1;text-wrap:balance;margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* top bar */
.top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:24px}
.mark{font-family:var(--display);font-weight:800;font-size:30px;letter-spacing:-.02em;display:flex;align-items:baseline;gap:0}
.mark .oo{display:inline-flex;gap:2px;margin:0 1px 0 .07em}
.mark .oo i{width:.56em;height:.56em;border-radius:50%;background:var(--accent);display:inline-block;transform:translateY(.02em);box-shadow:inset 0 -.12em 0 var(--accent-deep)}
/* the two dots climb diagonally and overlap; a see-through gap is cut from the first dot around the second */
.mark .oo{gap:0}
.mark .oo i:first-child{transform:translateY(.03em);-webkit-mask-image:radial-gradient(circle at calc(50% + .34em) calc(50% - .22em), transparent .335em, #000 calc(.335em + .5px));mask-image:radial-gradient(circle at calc(50% + .34em) calc(50% - .22em), transparent .335em, #000 calc(.335em + .5px))}
.mark .oo i:last-child{transform:translateY(-.19em);margin-left:-.22em}
.chip{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 9px;border-radius:999px;background:var(--sunk);color:var(--muted);border:1px solid var(--line)}
.top .note{margin-left:auto;font-size:13px;color:var(--muted);max-width:42ch}
.saved{font-family:var(--mono);font-size:12px;color:var(--good);opacity:0;transition:opacity .3s}
.saved.on{opacity:1}

/* buttons */
.btn{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:8px 14px;cursor:pointer;font-weight:700;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.btn:hover{border-color:var(--muted)}
a.btn{text-decoration:none;color:var(--ink)}
a.btn.primary{color:var(--on-accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);box-shadow:inset 0 -3px 0 var(--accent-deep)}
.btn.primary:hover{filter:brightness(1.05)}
.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn.ghost:hover{color:var(--ink);background:var(--sunk)}
.btn.danger{color:var(--bad)}
.btn.small{padding:5px 10px;font-size:14px;border-radius:8px}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* library */
.lib{display:grid;grid-template-columns:230px minmax(0,1fr);gap:28px;align-items:start}
@media (max-width:760px){.lib{grid-template-columns:minmax(0,1fr)}}
.rail{display:flex;flex-direction:column;gap:4px;position:sticky;top:calc(env(safe-area-inset-top,0px) + 12px)}
.rail h3{font-size:12px;font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:14px 0 6px 10px;font-weight:700}
.rail h3:first-child{margin-top:0}
.fold{display:flex;justify-content:space-between;align-items:center;gap:8px;text-align:left;border:0;background:transparent;padding:8px 10px;border-radius:9px;cursor:pointer;font-weight:700}
.fold:hover{background:var(--sunk)}
.fold.on{background:var(--surface);box-shadow:0 0 0 1px var(--line)}
.fold .n{font-family:var(--mono);font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.fold .ic{width:10px;height:10px;border-radius:3px;background:var(--accent);flex:none;margin-right:8px}
.fold .lbl{display:flex;align-items:center;min-width:0;overflow:hidden;text-overflow:ellipsis}
.inline-form{display:flex;gap:6px;padding:4px}
.inline-form input{flex:1;min-width:0;padding:6px 9px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
.main-head{display:flex;align-items:end;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.main-head h1{font-size:clamp(26px,4vw,36px);font-weight:800}
.main-head p{margin:4px 0 0;color:var(--muted)}
.head-acts{display:flex;gap:8px;flex-wrap:wrap}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:flex;flex-direction:column;gap:12px;min-width:0}
.card h2{font-size:20px;font-weight:700;overflow-wrap:anywhere}
.meta{font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;font-family:var(--mono)}
.stripes{display:flex;gap:3px;height:6px}
.stripes span{flex:1;border-radius:3px}
.card .acts{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto}
.confirm{background:var(--bad-soft);border-radius:10px;padding:10px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:14px}
.empty{border:2px dashed var(--line);border-radius:var(--r);padding:40px 20px;text-align:center;color:var(--muted)}
.empty h2{color:var(--ink);font-size:22px;margin-bottom:6px}

/* editor */
.ed-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:end;margin-bottom:18px}
@media (max-width:700px){.ed-top{grid-template-columns:minmax(0,1fr)}}
.field label{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:5px;font-weight:700}
.title-in{width:100%;font-family:var(--display);font-size:clamp(24px,3.5vw,32px);font-weight:800;border:0;border-bottom:2px solid var(--line);background:transparent;padding:4px 0}
.title-in:focus{outline:none;border-color:var(--accent)}
.ed-row{display:flex;gap:12px;flex-wrap:wrap;align-items:end}
select,.in{padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:var(--surface)}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar .sp{flex:1}
.hint{font-size:14px;color:var(--muted)}
.hint code,.mono{font-family:var(--mono);font-size:.9em;background:var(--sunk);padding:1px 5px;border-radius:5px}
.import{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:20px;display:flex;flex-direction:column;gap:12px}
.tabs{display:flex;gap:4px;background:var(--sunk);padding:4px;border-radius:10px;width:max-content;max-width:100%}
.tabs button{border:0;background:transparent;padding:6px 12px;border-radius:7px;cursor:pointer;font-weight:700;color:var(--muted)}
.tabs button.on{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.import textarea{width:100%;min-height:140px;font-family:var(--mono);font-size:13px;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--paper);resize:vertical;tab-size:16}
.fmt{overflow-x:auto}
.fmt table{border-collapse:collapse;font-size:13px;font-family:var(--mono)}
.fmt td,.fmt th{border:1px solid var(--line);padding:4px 8px;white-space:nowrap}
.fmt th{background:var(--sunk);font-weight:700;text-align:left}
.result{border-radius:10px;padding:12px;background:var(--sunk);display:flex;flex-direction:column;gap:8px;font-size:14px}
.result ul{margin:0;padding-left:20px;color:var(--muted)}
.qs{display:flex;flex-direction:column;gap:14px}
.q{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);overflow:hidden}
@media (max-width:820px){.q{grid-template-columns:minmax(0,1fr)}}
.q.warn{border-color:var(--bad)}
.q-edit{padding:16px;display:flex;flex-direction:column;gap:10px;min-width:0}
.q-head{display:flex;align-items:center;gap:8px}
.q-num{font-family:var(--mono);font-weight:700;font-size:13px;background:var(--ink);color:var(--paper);padding:2px 8px;border-radius:6px}
.q-head .sp{flex:1}
.q-warn{font-size:13px;color:var(--bad);font-weight:700}
.q textarea{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:9px;background:var(--paper);resize:vertical;min-height:52px}
.ans-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:8px;align-items:center}
.ans-row input[type=text]{width:100%;padding:7px 10px;border:1px solid var(--line);border-radius:9px;background:var(--paper)}
.ans-row.correct input[type=text]{border-color:var(--good);background:var(--good-soft)}
.pick{display:flex;align-items:center;gap:6px;cursor:pointer}
.pick input{accent-color:var(--good);width:17px;height:17px;margin:0}
.tag{font-family:var(--mono);font-weight:700;font-size:13px;width:26px;height:26px;border-radius:7px;display:grid;place-items:center;color:#fff}
.t0{background:var(--a1)}.t1{background:var(--a2)}.t2{background:var(--a3)}.t3{background:var(--a4)}
.q-prev{background:var(--sunk);padding:16px;display:flex;flex-direction:column;gap:10px;border-left:1px solid var(--line);min-width:0}
@media (max-width:820px){.q-prev{border-left:0;border-top:1px solid var(--line)}}
.q-prev .lab{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
.pv-q{font-size:18px;font-weight:700;overflow-wrap:anywhere}
.pv-ans{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.pv-ans div{border-radius:8px;padding:6px 9px;color:#fff;font-size:14px;font-weight:700;display:flex;justify-content:space-between;gap:6px;overflow-wrap:anywhere;min-width:0}
.pv-ans div.c::after{content:"✓";flex:none}
.add-q{border:2px dashed var(--line);background:transparent;border-radius:var(--r);padding:16px;cursor:pointer;font-weight:700;color:var(--muted)}
.add-q:hover{border-color:var(--accent);color:var(--ink)}
mjx-container{margin:0 !important}
mjx-container[display="true"]{display:inline-block !important}

/* play */
.play{max-width:900px;margin:0 auto}
.hud{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) auto;gap:10px;align-items:stretch;margin-bottom:18px}
@media (max-width:640px){.hud{grid-template-columns:repeat(2,minmax(0,1fr))}}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px 12px;min-width:0}
.stat .k{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
.stat .v{font-family:var(--display);font-weight:800;font-size:24px;font-variant-numeric:tabular-nums;line-height:1.2}
.stat.mult .v{color:var(--accent-deep)}
.flames{display:inline-flex;gap:2px;margin-left:6px;vertical-align:middle}
.flames i{width:7px;height:14px;border-radius:4px 4px 2px 2px;background:var(--line)}
.flames i.on{background:var(--accent)}
.stage{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(20px,4vw,40px);display:flex;flex-direction:column;gap:22px;min-height:380px}
.stage.center{align-items:center;justify-content:center;text-align:center}
.qlabel{font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
.qtext{font-family:var(--display);font-weight:700;font-size:clamp(24px,4vw,36px);line-height:1.25;overflow-wrap:anywhere}
.answers{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:540px){.answers{grid-template-columns:1fr}}
.ans{border:0;border-radius:14px;padding:18px 16px;min-height:86px;color:#fff;font-size:clamp(18px,2.6vw,24px);font-weight:700;cursor:pointer;display:flex;align-items:center;gap:14px;text-align:left;box-shadow:inset 0 -5px 0 rgba(0,0,0,.18);transition:transform .08s, opacity .2s, filter .2s;overflow-wrap:anywhere;min-width:0}
.ans:hover{transform:translateY(-2px)}
.ans:active{transform:translateY(1px)}
.ans .key{font-family:var(--mono);font-size:13px;background:rgba(255,255,255,.22);border-radius:7px;width:28px;height:28px;display:grid;place-items:center;flex:none}
.ans.a0{background:var(--a1)}.ans.a1{background:var(--a2)}.ans.a2{background:var(--a3)}.ans.a3{background:var(--a4)}
.ans[disabled]{cursor:default;transform:none}
.ans.dim{opacity:.28;filter:saturate(.3)}
.ans.right{outline:4px solid var(--good);outline-offset:3px}
.ans.wrong{outline:4px dashed var(--bad);outline-offset:3px}
.verdict{border-radius:14px;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.verdict.good{background:var(--good-soft)}
.verdict.bad{background:var(--bad-soft)}
.verdict h3{font-size:24px;font-weight:800}
.verdict.good h3{color:var(--good)}
.verdict.bad h3{color:var(--bad)}
.verdict p{margin:2px 0 0;color:var(--muted);font-weight:700}
.go{position:relative;overflow:hidden;font-size:18px;padding:12px 22px}
.go .bar{position:absolute;left:0;bottom:0;height:4px;background:var(--on-accent);opacity:.35;width:100%}
.go.locking .bar{animation:drain 2s linear forwards}
@keyframes drain{from{width:100%}to{width:0}}
.big-go{font-size:22px;padding:16px 30px;border-radius:14px}
.hero-n{font-family:var(--display);font-weight:800;font-size:clamp(56px,10vw,96px);line-height:1;font-variant-numeric:tabular-nums}
.tiers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;width:100%;max-width:560px}
@media (max-width:520px){.tiers{grid-template-columns:repeat(2,minmax(0,1fr))}}
.tier{border:1px solid var(--line);border-radius:10px;padding:10px;background:var(--paper)}
.tier b{font-family:var(--display);font-size:22px;display:block;color:var(--accent-deep)}
.tier span{font-size:13px;color:var(--muted)}
.setup{display:flex;flex-direction:column;gap:18px;align-items:center}
.summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;width:100%}
@media (max-width:640px){.summary{grid-template-columns:repeat(2,minmax(0,1fr))}}
.tbl-wrap{overflow-x:auto;width:100%}
.tbl{width:100%;border-collapse:collapse;font-size:15px;text-align:left}
.tbl th{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:8px;border-bottom:1px solid var(--line)}
.tbl td{padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td.num{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.meter{height:8px;border-radius:4px;background:var(--sunk);overflow:hidden;min-width:70px}
.meter i{display:block;height:100%;background:var(--good)}
.pop{animation:pop .35s ease-out}
@keyframes pop{0%{transform:scale(.96);opacity:.4}100%{transform:scale(1);opacity:1}}
@media (prefers-reduced-motion: reduce){*{animation:none !important;transition:none !important}}

/* sign-in, landing, toasts */
.gate{min-height:100vh;display:grid;place-items:center;padding-block:40px}
.gate-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px;display:flex;flex-direction:column;gap:16px}
.gate-card .mark{font-size:40px}
.gate-card p{margin:0;color:var(--muted)}
.gate-card .in{width:100%;padding:11px 12px;font-size:17px}
.gate-card .btn{justify-content:center;padding:11px 14px;font-size:17px}
.err{color:var(--bad);font-weight:700;font-size:14px;min-height:1.4em;margin:0}
.code-in{font-family:var(--mono);font-size:30px !important;letter-spacing:.3em;text-align:center;text-transform:uppercase}
.foot{font-size:14px;color:var(--muted);text-align:center}
.foot a{color:inherit}
.loading{padding:60px 0;text-align:center;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:10px;font-weight:700;z-index:50;max-width:calc(100% - 32px)}
.toast.bad{background:var(--bad);color:#fff}
.saved.bad{color:var(--bad);opacity:1}
.saved.busy{color:var(--muted);opacity:1}
.who{font-size:14px;color:var(--muted);display:flex;gap:8px;align-items:center;margin-left:auto}
.owner{font-family:var(--mono);font-size:12px;color:var(--muted)}
.ro{background:var(--sunk);border-radius:10px;padding:10px 14px;font-size:14px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.search{width:100%;max-width:280px}

/* live game: host screen */
.wrap.wide{max-width:1400px}
.join-banner{display:flex;gap:clamp(20px,5vw,60px);align-items:end;justify-content:center;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(20px,4vw,36px);text-align:center}
.join-url{font-family:var(--display);font-weight:800;font-size:clamp(22px,3.4vw,40px);overflow-wrap:anywhere}
.join-code{font-family:var(--mono);font-weight:700;font-size:clamp(56px,10vw,120px);letter-spacing:.12em;line-height:1;color:var(--ink);background:var(--accent);border-radius:16px;padding:8px 20px;box-shadow:inset 0 -6px 0 var(--accent-deep)}
.names{display:flex;flex-wrap:wrap;gap:10px}
.name-chip{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:8px 16px;font-weight:700;font-size:18px;cursor:pointer}
.name-chip:hover{border-color:var(--bad);color:var(--bad);text-decoration:line-through}
.host-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:20px}
.host-bar .sp{flex:1}
.host-bar .stat{min-width:110px}
.host-code{display:flex;flex-direction:column;gap:0}
.host-code b{font-family:var(--mono);font-size:30px;letter-spacing:.1em;line-height:1.1}
.host-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:28px;align-items:start}
@media (max-width:900px){.host-grid{grid-template-columns:minmax(0,1fr)}}
.summary + .side-h{margin-top:20px}
.side-h{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700;margin:0 0 10px}
.lb{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.lb-body{max-height:calc(100vh - 240px);min-height:200px;overflow-y:auto}
.lb-row{display:grid;grid-template-columns:44px minmax(0,1fr) 90px 80px 80px 34px;gap:8px;align-items:center;padding:9px 14px;border-bottom:1px solid var(--line);font-size:19px}
.lb-row:last-child{border-bottom:0}
.lb-head{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700;background:var(--sunk);padding-block:8px}
.lb-rank{font-family:var(--display);font-weight:800;color:var(--muted);font-variant-numeric:tabular-nums}
.lb-name{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-num{font-family:var(--mono);font-variant-numeric:tabular-nums;text-align:right;color:var(--muted);font-size:.9em}
.lb-num.key{color:var(--ink);font-weight:700;font-size:1em}
.lb-head .lb-num{font-size:11px}
.lb-row.top1 .lb-rank{color:var(--accent-deep)}
.lb-row.top1{background:color-mix(in srgb, var(--accent) 14%, transparent)}
.lb-x{border:0;background:transparent;color:var(--muted);cursor:pointer;border-radius:6px;opacity:.35}
.lb-row:hover .lb-x{opacity:1}
.lb-x:hover{color:var(--bad);background:var(--bad-soft)}
@media (max-width:560px){.lb-row{grid-template-columns:32px minmax(0,1fr) 70px 56px 56px 26px;font-size:16px;padding-inline:10px}}
.tricky{display:flex;flex-direction:column;gap:10px}
.tricky-row{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;gap:6px}
.tricky-q{font-weight:700;overflow-wrap:anywhere}
.tricky-m{display:flex;align-items:center;gap:10px}
.tricky-m .meter{flex:1}
.podium{display:flex;justify-content:center;gap:12px;align-items:flex-end;flex-wrap:wrap}
.podium .pod{flex:1 1 200px;max-width:340px}
.pod{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;align-items:center;gap:4px;text-align:center;min-width:0}
.pod1{order:2;padding-block:28px;background:color-mix(in srgb, var(--accent) 22%, var(--surface));border-color:var(--accent)}
.pod2{order:1}.pod3{order:3}
@media (max-width:560px){.pod1,.pod2,.pod3{order:0}}
.pod-rank{font-family:var(--display);font-weight:800;font-size:34px;color:var(--accent-deep)}
.pod-name{font-family:var(--display);font-weight:800;font-size:clamp(20px,2.4vw,30px);overflow-wrap:anywhere}
.pod-score{font-family:var(--mono);color:var(--muted)}

/* live game: pupil page */
.gate-card.center{align-items:center;text-align:center}
.pupil-hud{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:640px){.pupil-hud{grid-template-columns:repeat(2,minmax(0,1fr))}}
.ans.picked{outline:4px solid var(--ink);outline-offset:3px}
.dots{display:flex;gap:8px;padding:8px}
.dots i{width:12px;height:12px;border-radius:50%;background:var(--accent);animation:bob 1.2s ease-in-out infinite}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}
@keyframes bob{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(-8px);opacity:1}}


/* ---------- Marine Mania ---------- */
body.water{background:linear-gradient(180deg,var(--water-top),var(--water-bottom)) fixed}
body.water::after{content:"";position:fixed;left:0;right:0;bottom:0;height:110px;background:var(--wave);pointer-events:none;z-index:0;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 110'%3E%3Cpath d='M0 40 Q75 10 150 40 T300 40 T450 40 T600 40 V110 H0Z'/%3E%3C/svg%3E") repeat-x 0 100%/600px 110px;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 110'%3E%3Cpath d='M0 40 Q75 10 150 40 T300 40 T450 40 T600 40 V110 H0Z'/%3E%3C/svg%3E") repeat-x 0 100%/600px 110px;
  animation:drift 14s linear infinite;opacity:.8}
@keyframes drift{to{-webkit-mask-position:600px 100%;mask-position:600px 100%}}
body.water .wrap{position:relative;z-index:1}
.modes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:100%;max-width:640px}
@media (max-width:560px){.modes{grid-template-columns:minmax(0,1fr)}}
.mode{border:2px solid var(--line);background:var(--paper);border-radius:14px;padding:14px 16px;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:4px}
.mode b{font-family:var(--display);font-size:20px}
.mode span{font-size:14px;color:var(--muted)}
.mode.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,var(--surface));box-shadow:inset 0 -3px 0 var(--accent-deep)}
.mode.fishing.on{border-color:var(--a2);background:color-mix(in srgb,var(--a2) 10%,var(--surface));box-shadow:inset 0 -3px 0 var(--a2)}
.fish-tiers{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;width:100%;max-width:640px}
@media (max-width:560px){.fish-tiers{grid-template-columns:repeat(3,minmax(0,1fr))}}
.fish-tier{border:1px solid var(--line);border-radius:10px;padding:8px;background:var(--paper);display:flex;flex-direction:column;align-items:center;gap:2px}
.fish-tier b{font-family:var(--display);font-size:15px}
.fish-tier span{font-size:12px;color:var(--muted);font-family:var(--mono)}
.fish{display:block;max-width:100%;height:auto}
.frenzy-banner{display:flex;gap:10px;align-items:center;justify-content:center;flex-wrap:wrap;margin-bottom:14px;padding:10px 16px;border-radius:12px;background:var(--a1);color:#fff;font-weight:700;font-size:18px;box-shadow:inset 0 -4px 0 rgba(0,0,0,.18);animation:pulse 1s ease-in-out infinite alternate;font-variant-numeric:tabular-nums}
.frenzy-banner b{font-family:var(--display);font-size:24px;text-transform:uppercase;letter-spacing:.04em}
@keyframes pulse{from{filter:brightness(1)}to{filter:brightness(1.15)}}
.fish-hud{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:640px){.fish-hud{grid-template-columns:repeat(3,minmax(0,1fr))}.fish-hud .v{font-size:20px}}
.flames.lure i{width:9px;height:9px;border-radius:50%}
.flames.lure i.on{background:var(--a2)}
.big-catch{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin-bottom:16px}
.big-catch div{display:flex;flex-direction:column;gap:2px;min-width:0}
.big-catch b{font-family:var(--display);font-size:20px;overflow-wrap:anywhere}
.big-catch .lb-num{text-align:left}
.wide-catch{margin-top:16px}
.cast-stage{min-height:380px}
.cast{position:relative;width:200px;height:220px}
.cast .line{position:absolute;left:50%;top:0;width:2px;height:0;background:var(--ink);opacity:.45;animation:drop .4s ease-out forwards}
.cast .bob{position:absolute;left:calc(50% - 11px);top:128px;width:22px;height:22px;border-radius:50%;background:linear-gradient(var(--a1) 50%,#fff 50%);border:2px solid var(--ink);opacity:0;animation:bobin .15s .38s forwards,bob .32s .55s ease-in-out 3 alternate}
.cast .ripple{position:absolute;left:calc(50% - 40px);top:146px;width:80px;height:18px;border-radius:50%;border:2px solid var(--a2);opacity:0;animation:ripple .6s .45s ease-out forwards}
@keyframes drop{to{height:132px}}
@keyframes bobin{to{opacity:1}}
@keyframes bob{to{transform:translateY(10px)}}
@keyframes ripple{0%{opacity:.8;transform:scale(.4)}100%{opacity:0;transform:scale(1.4)}}
.catch{position:relative;overflow:hidden;gap:10px}
.tier-chip{font-family:var(--mono);font-weight:700;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:var(--tier);padding:4px 12px;border-radius:999px}
.catch-fish{animation:rise .45s cubic-bezier(.2,1.4,.4,1) both}
@keyframes rise{from{transform:translateY(40px) scale(.7);opacity:0}to{transform:none;opacity:1}}
.catch-name{font-size:clamp(24px,4vw,34px)}
.catch-kg{font-family:var(--display);font-weight:800;font-size:clamp(36px,6vw,54px);color:var(--tier);font-variant-numeric:tabular-nums}
.x2{font-family:var(--mono);font-size:16px;background:var(--a1);color:#fff;border-radius:6px;padding:2px 8px;vertical-align:middle}
.catch.sparkle .catch-fish .fish{filter:drop-shadow(0 0 14px var(--tier))}
.burst{position:absolute;left:50%;top:42%;width:0;height:0;pointer-events:none}
.burst i{position:absolute;width:10px;height:10px;border-radius:50%;background:var(--tier);transform:rotate(var(--a)) translateX(0);animation:burst .8s ease-out forwards;opacity:0}
.burst i:nth-child(even){background:var(--accent)}
@keyframes burst{0%{opacity:1;transform:rotate(var(--a)) translateX(0)}100%{opacity:0;transform:rotate(var(--a)) translateX(170px)}}

/* music controls on the host screen */
.music{display:flex;align-items:center;gap:6px}
.music input[type=range]{width:110px;accent-color:var(--accent-deep)}