/* ===== PsychRevise – bright, game-like theme ===== */
:root{
  --bg:#f3f1ff; --card:#ffffff; --ink:#1e1b4b; --muted:#6b6a8a; --line:#e6e3f7;
  --brand:#4f46e5; --brand-2:#7c3aed; --brand-ink:#fff; --soft:#eeecff;
  --ok:#16a34a; --ok-soft:#dcfce7; --warn:#b45309; --warn-soft:#fef3c7; --bad:#dc2626; --bad-soft:#fee2e2;
  --accent:#f97316;
  --learn:linear-gradient(135deg,#6366f1,#8b5cf6); --exam:linear-gradient(135deg,#f97316,#f43f5e);
  --flash:linear-gradient(135deg,#14b8a6,#0ea5e9); --games:linear-gradient(135deg,#a855f7,#ec4899);
  --radius:20px; --shadow:0 2px 0 rgba(30,27,75,.06),0 10px 24px -12px rgba(30,27,75,.25);
  --font:"Nunito",system-ui,-apple-system,"Segoe UI",sans-serif; --display:"Baloo 2","Nunito",system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#12111f; --card:#1d1b31; --ink:#eeedfb; --muted:#a6a3c4; --line:#2e2b4a; --soft:#2a2746;
  --brand:#818cf8; --brand-ink:#12111f; --ok:#4ade80; --ok-soft:#163323; --warn:#fbbf24; --warn-soft:#3a2f17; --bad:#f87171; --bad-soft:#3d1f22;
  --shadow:0 10px 24px -12px rgba(0,0,0,.6);
}}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:1.0625rem/1.55 var(--font);-webkit-text-size-adjust:100%}
main{max-width:860px;margin:0 auto;padding:18px 16px 90px}
h1,h2,h3{font-family:var(--display);line-height:1.15}
h1{font-size:1.75rem;margin:.2em 0 .35em}
h2{font-size:1.3rem;margin:1.1em 0 .5em}
h3{font-size:1.12rem;margin:0 0 .4em}
p{margin:.4em 0 .8em}
.muted{color:var(--muted)} .small{font-size:.88rem} .center{text-align:center}
.hidden{display:none!important}

/* ---------- top bar (Home always top-left) ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;padding:8px 12px;
  background:linear-gradient(90deg,#4338ca,#7c3aed);color:#fff;box-shadow:0 4px 14px -6px rgba(67,56,202,.6)}
.topbar .brand{font-family:var(--display);font-weight:800;color:#fff}
.homebtn{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);color:#fff;border-radius:14px;padding:6px 14px 6px 8px;min-height:46px}
.homebtn .logo{font-size:1.5rem;background:#fff;border-radius:10px;width:34px;height:34px;display:grid;place-items:center}
.homebtn .brandname{font-family:var(--display);font-weight:800;font-size:1.15rem;letter-spacing:.01em}
.coursepill{margin-left:auto;font-weight:800;font-size:.8rem;background:rgba(255,255,255,.18);padding:5px 12px;border-radius:99px;white-space:nowrap}
.who{background:transparent;color:#fff;padding:4px 6px;min-height:46px;gap:6px}
.who .av{font-size:1.6rem}
.who .caret{opacity:.8;font-size:.8rem}
.menu{position:absolute;right:12px;top:58px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:6px}
.menu button{background:transparent;color:var(--ink);width:100%;justify-content:flex-start}
@media (max-width:560px){.homebtn .brandname,.who #tbName{display:none}.coursepill{font-size:.72rem}}

/* ---------- buttons & inputs ---------- */
button,.btn{font:inherit;font-weight:800;border:0;border-radius:14px;padding:12px 18px;cursor:pointer;background:var(--brand);color:var(--brand-ink);
  min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;touch-action:manipulation;transition:transform .08s ease,filter .15s}
button:active,.btn:active{transform:scale(.97)}
button.sec,.btn.sec{background:var(--soft);color:var(--ink)}
button.ghost{background:transparent;color:var(--brand);padding:8px 10px;min-height:40px}
button.big{width:100%;font-size:1.08rem;padding:15px;box-shadow:0 4px 0 rgba(30,27,75,.18)}
button.ai{background:var(--exam);color:#fff}
button.okbtn{background:var(--ok);color:#fff}
button:disabled{opacity:.5;cursor:default;transform:none}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.row-sb{display:flex;justify-content:space-between;align-items:center;gap:10px}
input[type=text],input[type=number],textarea,select{font:inherit;width:100%;padding:13px 14px;border:2px solid var(--line);border-radius:14px;background:var(--card);color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--brand)}
textarea{min-height:200px;resize:vertical;line-height:1.5}
.code-input{text-transform:uppercase;font-size:1.4rem;letter-spacing:.08em;text-align:center;font-weight:800}

/* ---------- cards, pills, messages ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin:12px 0;box-shadow:var(--shadow)}
.pill{display:inline-block;font-size:.78rem;font-weight:800;padding:4px 10px;border-radius:99px;background:var(--soft);color:var(--ink);white-space:nowrap}
.pill.ok{background:var(--ok-soft);color:var(--ok)} .pill.warn{background:var(--warn-soft);color:var(--warn)} .pill.bad{background:var(--bad-soft);color:var(--bad)}
.msg{padding:10px 14px;border-radius:14px;margin:10px 0;font-weight:600}
.msg.err{background:var(--bad-soft);color:var(--bad)} .msg.ok{background:var(--ok-soft);color:var(--ok)} .msg.info{background:var(--warn-soft);color:var(--warn)}
.note{border-left:5px solid var(--brand);padding:10px 14px;background:var(--soft);border-radius:0 14px 14px 0}
details summary{cursor:pointer;font-weight:800;padding:6px 0}
.pbar{height:12px;border-radius:99px;background:rgba(127,127,170,.18);overflow:hidden;margin:6px 0}
.pbar span{display:block;height:100%;border-radius:99px;background:var(--brand);min-width:4px;transition:width .6s ease}

/* ---------- home: hero ---------- */
.hero{background:var(--learn);color:#fff;border-radius:26px;padding:20px;box-shadow:0 14px 30px -14px rgba(79,70,229,.7);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.1)}
.hero-top{display:flex;gap:14px;align-items:center}
.hero-av{font-size:2.6rem;background:rgba(255,255,255,.2);border-radius:20px;width:68px;height:68px;display:grid;place-items:center;flex:none}
.hero h1{margin:0;font-size:1.9rem}
.hero p{margin:.2em 0 0;opacity:.95}
.hero-prog{margin-top:14px;background:rgba(0,0,0,.14);border-radius:16px;padding:10px 14px}
.hero-prog .pbar{background:rgba(255,255,255,.25);height:14px}

/* ---------- home: 4 big tiles ---------- */
.bigtiles{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:16px 0}
.bigtile{flex-direction:column;align-items:stretch;padding:0;border-radius:24px;overflow:hidden;color:#fff;min-height:0;text-align:left;
  box-shadow:0 6px 0 rgba(30,27,75,.18),0 14px 24px -14px rgba(30,27,75,.5)}
.bigtile:hover{filter:brightness(1.05)}
.bigtile .art{display:block;padding:10px 10px 0}
.bigtile .art svg{display:block;width:100%;height:auto}
.bigtile .lab{display:flex;flex-direction:column;padding:6px 16px 14px}
.bigtile .lab b{font-family:var(--display);font-size:1.35rem;line-height:1.1}
.bigtile .lab small{opacity:.9;font-weight:700}
.t-learn{background:var(--learn)} .t-exam{background:var(--exam)} .t-flash{background:var(--flash)} .t-games{background:var(--games)}
@media (max-width:420px){.bigtile .lab b{font-size:1.1rem}}

.continue{width:100%;justify-content:flex-start;background:var(--card);color:var(--ink);border:2px solid var(--line);border-radius:20px;padding:14px 16px;box-shadow:var(--shadow);text-align:left}
.continue>span:first-child{background:var(--exam);color:#fff;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;flex:none}
.continue small{display:block;color:var(--muted);font-weight:700}
.continue .grow{flex:1}
.sech{margin-top:1.3em}

/* ---------- topic cards ---------- */
.topicgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.tcard{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;background:var(--card);color:var(--ink);border:2px solid var(--line);border-top:6px solid var(--c);
  border-radius:20px;padding:14px;box-shadow:var(--shadow);min-height:140px}
.tcard .tic{font-size:1.9rem;background:color-mix(in srgb,var(--c) 15%,transparent);border-radius:14px;width:48px;height:48px;display:grid;place-items:center;margin-bottom:6px}
.tcard b{font-family:var(--display);font-size:1.12rem;line-height:1.15}
.tcard small{color:var(--muted);font-weight:700}
.tcard .pbar{width:100%}
.tcard .pct{color:var(--c)}
.tcard.locked{opacity:.55;border-top-color:var(--line)}

/* ---------- page headers & crumbs ---------- */
.pagehead{background:var(--c,var(--learn));color:#fff;border-radius:24px;padding:16px 18px;margin-bottom:14px;box-shadow:var(--shadow)}
.pagehead h1{margin:.1em 0 .2em}
.pagehead p{margin:.2em 0;opacity:.95}
.pagehead .pbar{background:rgba(255,255,255,.25)}
.crumb{background:rgba(255,255,255,.2);color:#fff;min-height:36px;padding:6px 12px;border-radius:99px;font-size:.9rem}
.crumb.dark{background:var(--soft);color:var(--ink);margin-bottom:6px}

/* ---------- section list tiles ---------- */
.tile{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--card);color:var(--ink);border:2px solid var(--line);
  box-shadow:var(--shadow);border-radius:20px;padding:14px 16px;margin:10px 0;justify-content:flex-start;font-weight:600}
.tile .ic{font-size:1.7rem;flex:none}
.tile .grow{flex:1;min-width:0}
.tile b{font-weight:800}
.tile:disabled{opacity:.55}

/* ---------- learn notes ---------- */
.tabs{display:flex;gap:8px;margin:6px 0 12px;flex-wrap:wrap}
.tab{background:var(--soft);color:var(--ink);min-height:44px;padding:10px 16px}
.tab.on{background:var(--brand);color:var(--brand-ink)}
.bigidea{border-left:6px solid var(--accent)}
.bigidea .lbl{font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--accent)}
.bigidea p{font-size:1.08rem;font-weight:700;margin:.3em 0 0}
.card ul{margin:.3em 0 .4em;padding-left:1.2em}
.card li{margin:.35em 0}
.terms{margin:0} .terms dt{font-weight:800;margin-top:10px} .terms dd{margin:2px 0 0;color:var(--muted)}
.ev{font-weight:800;margin:.6em 0 .2em} .ev.ok{color:var(--ok)} .ev.bad{color:var(--bad)}

/* ---------- questions ---------- */
.qstem{background:var(--soft);border-radius:14px;padding:12px 14px;margin:8px 0;white-space:pre-line}
.qfig{display:block;max-width:100%;height:auto;margin:10px auto;border:1px solid var(--line);border-radius:12px;background:#fff}
.tablewrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.93rem}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
tr.click{cursor:pointer} tr.click:hover td{background:var(--soft)}
.qtable{margin:10px 0;font-size:.92rem}
.qtable caption{caption-side:top;text-align:left;font-weight:800;padding:4px 0;color:var(--muted)}
.qtable th{text-transform:none;letter-spacing:0;font-size:.85rem;color:var(--ink);background:var(--soft)}
.qtable td,.qtable th{border:1px solid var(--line)}
.check{display:flex;gap:12px;align-items:flex-start;padding:12px;border:2px solid var(--line);border-radius:14px;margin:8px 0;cursor:pointer;background:var(--bg)}
.check input{width:26px;height:26px;margin-top:2px;flex:none;accent-color:var(--ok)}
.check.on{border-color:var(--ok);background:var(--ok-soft)}
.ao{font-size:.75rem;font-weight:800;color:var(--muted)}
.score{font-family:var(--display);font-size:2.4rem;font-weight:800;color:var(--ok)}
.answer{white-space:pre-wrap;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;justify-content:flex-start;background:var(--card);color:var(--ink);border:2px solid var(--line);margin:8px 0;font-weight:600}
.opt b{flex:none;width:30px;height:30px;border-radius:50%;background:var(--soft);display:inline-flex;align-items:center;justify-content:center}
.opt.on{border-color:var(--brand);background:var(--soft)}
.opt.right{border-color:var(--ok);background:var(--ok-soft)} .opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt:disabled{opacity:1}

/* ---------- flashcards ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:var(--soft);color:var(--ink);min-height:40px;padding:8px 12px;font-size:.9rem;border-radius:99px}
.flip{display:block;width:100%;min-height:280px;padding:0;margin:14px 0;background:transparent;perspective:1200px;position:relative;box-shadow:none}
.flip .face{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:24px;border-radius:26px;
  backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .5s ease;box-shadow:0 8px 0 rgba(30,27,75,.15)}
.flip .front{background:var(--flash);color:#fff}
.flip .back{background:var(--card);color:var(--ink);border:3px solid #14b8a6;transform:rotateY(180deg)}
.flip.on .front{transform:rotateY(-180deg)} .flip.on .back{transform:rotateY(0)}
.flip small{font-weight:800;text-transform:uppercase;letter-spacing:.06em;opacity:.85}
.flip .front b{font-family:var(--display);font-size:2rem;text-align:center}
.flip .back b{font-size:1.25rem;text-align:center;line-height:1.4}
.flip em{font-style:normal;opacity:.8;font-weight:700}
.fbtns>*{flex:1}
.gameart{max-width:320px;margin:0 auto;background:var(--games);border-radius:24px;padding:10px}

/* ---------- avatar picker ---------- */
.avgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:10px}
.avgrid button{font-size:2rem;background:var(--soft);min-height:64px;padding:0}
.avgrid button.on{outline:3px solid var(--brand)}

@media print{.topbar,button,.noprint{display:none!important}.card{box-shadow:none;break-inside:avoid}}
.topbar button.ghost{color:#fff}.topbar .muted{color:rgba(255,255,255,.85)}
.mstag{display:inline-block;font-size:.7rem;font-weight:900;letter-spacing:.04em;background:#f97316;color:#fff;border-radius:6px;padding:1px 6px;vertical-align:1px}
.msli{background:rgba(249,115,22,.08);border-radius:10px;padding:6px 8px;list-style-position:inside;margin-left:-1.2em!important}
.msli::marker{content:""}
.msrc{font-size:.75rem;font-weight:800;color:var(--muted);white-space:nowrap}
.mslegend{font-size:.88rem;color:var(--muted);margin:4px 2px 0}
.levels{display:grid;gap:8px;margin:10px 0}
.lvl{background:var(--soft);border-radius:14px;padding:10px 12px}
.lvl ul{margin:.3em 0 0;padding-left:1.1em;font-size:.9rem}
.markpick{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.markpick button{min-width:48px}
.markpick button.on{background:var(--brand);color:var(--brand-ink)}

/* ---------- home layout: main column + right sidebar (rankings, online) ---------- */
main:has(.homegrid){max-width:1180px}
.homegrid{display:grid;grid-template-columns:minmax(0,1fr);grid-template-areas:"a" "b" "s" "c";gap:0 22px}
.h-a{grid-area:a}.h-b{grid-area:b}.h-c{grid-area:c}.side{grid-area:s}
@media (min-width:880px){
  .homegrid{grid-template-columns:minmax(0,1fr) 310px;grid-template-rows:auto auto 1fr;grid-template-areas:"a s" "b s" "c s"}
  .side{position:sticky;top:76px;align-self:start}
  .side .sidecard:first-child{margin-top:0}
}
.sidecard{padding:16px}
.sidecard h3{display:flex;align-items:center;gap:6px}
.tiny{font-size:.76rem;margin:.3em 0}
.seg{display:flex;background:var(--soft);border-radius:12px;padding:3px;gap:3px;margin:6px 0 2px}
.seg button{flex:1;background:transparent;color:var(--muted);padding:7px 8px;border-radius:10px;font-size:.88rem;min-height:0;box-shadow:none}
.seg button.on{background:var(--card);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.board{list-style:none;margin:6px 0 0;padding:0}
.board li{display:flex;align-items:center;gap:8px;padding:6px 6px;border-radius:12px;margin:2px 0!important}
.board li.me{background:color-mix(in srgb,var(--brand) 14%,transparent)}
.board li.gap{justify-content:center;color:var(--muted);padding:0}
.board .pos{width:28px;text-align:center;font-size:1.15rem;flex:none}
.board .rk{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--soft);font-size:.8rem;font-weight:800}
.lav{font-size:1.4rem;flex:none}
.board .grow,.online .grow{flex:1;min-width:0;line-height:1.15}
.board .grow b,.online .grow b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.board small,.online small{color:var(--muted);font-size:.74rem;font-weight:700}
.board .sc{font-family:var(--display);font-weight:800;font-size:1.15rem;color:var(--brand)}
.dot{width:10px;height:10px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.2);display:inline-block}
.online{list-style:none;margin:4px 0 0;padding:0;max-height:300px;overflow:auto}
.online li{margin:2px 0!important}
.onl{width:100%;justify-content:flex-start;gap:8px;background:transparent;color:var(--ink);padding:7px 6px;border-radius:12px;text-align:left;box-shadow:none;min-height:0}
.onl:hover:not(:disabled){background:var(--soft)}
.onl:disabled{opacity:1}
.onl .chev{color:var(--muted)}
.pop{margin-top:10px;border:2px solid var(--line);border-radius:16px;padding:12px;display:grid;gap:8px;background:var(--bg)}
.pop button.sec{justify-content:space-between;width:100%}
.pop small{font-size:.7rem;background:var(--warn-soft);color:var(--warn);padding:2px 7px;border-radius:99px}

/* ---------- Microsoft sign-in button ---------- */
.msbtn{background:#fff;color:#1f2937;border:2px solid #d1d5db;gap:12px;justify-content:center}
.mslogo{display:grid;grid-template-columns:10px 10px;gap:2px;flex:none}
.mslogo i{width:10px;height:10px;display:block}
.mslogo i:nth-child(1){background:#f25022}.mslogo i:nth-child(2){background:#7fba00}.mslogo i:nth-child(3){background:#00a4ef}.mslogo i:nth-child(4){background:#ffb900}
@media (min-width:600px) and (max-width:879px){
  .side{display:grid;grid-template-columns:1fr 1fr;gap:0 14px;align-items:start}
}
.foot{text-align:center;color:var(--muted);font-size:.75rem;padding:0 16px 28px}

/* tiles that use a picture (the picture already has the title on it) */
.bigtile.imgtile{position:relative;padding:0;min-width:0;min-height:150px}
.bigtile.imgtile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:0% 100%;display:block}

/* examiner report box (shown with the mark scheme) */
.erbox{background:color-mix(in srgb,#0ea5e9 10%,var(--card));border:2px solid color-mix(in srgb,#0ea5e9 35%,transparent);border-radius:16px;padding:12px 14px;margin:12px 0}
.erbox p{margin:.4em 0 0;font-size:.92rem}

/* teacher preview banner */
.pvbar{background:#fef3c7;color:#78350f;border-bottom:2px solid #f59e0b;padding:8px 14px;font-size:.9rem;text-align:center}
.pvbar a{color:#78350f;font-weight:700;margin-left:8px}

/* numbered section headings on a topic page (e.g. IAL criminological) */
.grp{font-size:1.05rem;margin:22px 4px 8px;padding-bottom:6px;border-bottom:2px solid var(--line,#e5e7eb)}
.grp:first-of-type{margin-top:14px}

/* ===== forced themes + text size (Settings) ===== */
:root[data-theme="dark"]{
  --bg:#12111f; --card:#1d1b31; --ink:#eeedfb; --muted:#a6a3c4; --line:#2e2b4a; --soft:#2a2746;
  --brand:#818cf8; --brand-ink:#12111f; --ok:#4ade80; --ok-soft:#163323; --warn:#fbbf24; --warn-soft:#3a2f17; --bad:#f87171; --bad-soft:#3d1f22;
  --shadow:0 10px 24px -12px rgba(0,0,0,.6);
}
html[data-fs="s"]{font-size:14px} html[data-fs="m"]{font-size:16px} html[data-fs="l"]{font-size:18.5px}
/* ===== header: HOME / BACK + tools ===== */
.navbtns{display:flex;gap:6px}
.navbtn{background:#fff;color:#4338ca;font-weight:800;letter-spacing:.04em;border-radius:12px;padding:8px 14px;min-height:42px;font-size:.9rem}
.navbtn:hover{background:#eef2ff}
.tbicon{background:rgba(255,255,255,.16);color:#fff;border-radius:12px;padding:8px 12px;min-height:42px;gap:6px;font-weight:800;font-size:.85rem}
.tbicon:hover{background:rgba(255,255,255,.26)}
.setmenu{right:12px;min-width:260px;padding:12px 14px}
.setmenu .seg{display:flex;gap:4px;background:var(--soft);border-radius:12px;padding:4px;margin-bottom:6px}
.setmenu .seg button{flex:1;background:transparent;color:var(--ink);min-height:38px;padding:6px 8px;font-size:.85rem}
.setmenu .seg button.on{background:var(--card);box-shadow:var(--shadow)}
.setmenu p{margin:8px 0 4px}
@media (max-width:700px){.tbicon span,.who #tbName{display:none}.coursepill{display:none}}
@media (max-width:420px){.navbtn{padding:8px 10px;font-size:.8rem}.tbicon{padding:8px 9px}}
/* ===== numbering, no icons ===== */
.tnum{display:block;font-weight:800;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.tnum.light{color:rgba(255,255,255,.85)}
.tcard .tnum{color:var(--c)}
.fgrp{font-weight:800;margin:14px 0 6px;font-size:.92rem}
/* ===== marking choice ===== */
.choosebar{border:2px solid #8b5cf6}
.choosebar .row button{flex:1 1 220px}
/* ===== analytics ===== */
.statgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px}
.statgrid div{background:var(--soft);border-radius:14px;padding:12px;text-align:center}
.statgrid b{display:block;font-size:1.4rem;font-family:var(--display)}
.statgrid small{color:var(--muted);font-weight:700}
.tline{display:flex;align-items:center;gap:10px;margin:6px 0}.tline>span:first-child{width:130px;font-size:.9rem}.tline b{width:80px;text-align:right;font-size:.85rem}
.agroup{margin:16px 0 6px}
.arow{display:grid;grid-template-columns:minmax(150px,1.3fr) 1fr;gap:4px 12px;align-items:center;padding:10px 0;border-top:1px solid var(--line)}
.arow .aname{font-weight:700;font-size:.92rem}.arow .achips{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:6px}
.wrow{padding:8px 0;border-top:1px solid var(--line)}
/* ===== exam technique ===== */
.bigtile.t-tech{grid-column:1/-1;background:linear-gradient(135deg,#0ea5e9,#6366f1);color:#fff;flex-direction:row;justify-content:space-between;align-items:center;min-height:96px}
.bigtile.t-tech .lab{text-align:left}.bigtile.t-tech .techabc{font-family:var(--display);font-weight:800;font-size:1.4rem;letter-spacing:.2em;opacity:.9}
.pagehead.t-tech{background:linear-gradient(135deg,#0ea5e9,#6366f1);color:#fff}
.glet{flex:none;display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,#0ea5e9,#6366f1);color:#fff;font-family:var(--display);font-weight:800;font-size:1.3rem}
.glet.sm{font-size:1rem}
.steps li{margin:6px 0}
.frame{background:var(--soft);border-left:4px solid #6366f1;border-radius:10px;padding:10px 14px;margin:8px 0}
.aolist{list-style:none;padding:0}.aolist li{margin:8px 0}
.aopill{display:inline-block;font-size:.72rem;font-weight:800;padding:2px 8px;border-radius:99px;color:#fff;background:#64748b;margin-right:4px}
.aopill.ao1{background:#8b5cf6}.aopill.ao2{background:#0ea5e9}.aopill.ao3{background:#10b981}
mark{background:#fde68a;color:inherit;border-radius:3px;padding:0 2px}

/* ===== Levels, avatars, perks ===== */
.avf{--s:40px;display:inline-grid;place-items:center;width:calc(var(--s) + 6px);height:calc(var(--s) + 6px);border-radius:50%;padding:3px;flex:none;background:#cbd5e1;position:relative;vertical-align:middle}
.avf .avsvg{display:block;border-radius:50%}
.avf .avemo{display:grid;place-items:center;width:var(--s);height:var(--s);border-radius:50%;background:var(--soft);line-height:1}
.avf.f-grey{background:#cbd5e1}
.avf.f-bronze{background:linear-gradient(135deg,#b45309,#f59e0b,#92400e)}
.avf.f-silver{background:linear-gradient(135deg,#94a3b8,#f1f5f9,#64748b)}
.avf.f-gold{background:linear-gradient(135deg,#ca8a04,#fde047,#a16207)}
.avf.f-diamond{background:linear-gradient(135deg,#06b6d4,#e0f2fe,#6366f1,#a5f3fc);box-shadow:0 0 10px #67e8f9aa}
.avf.f-anim{background:conic-gradient(#f43f5e,#f59e0b,#84cc16,#06b6d4,#8b5cf6,#f43f5e);animation:spinframe 3s linear infinite}
.avf.f-anim>*{animation:spinframe 3s linear infinite reverse}
@keyframes spinframe{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.avf.f-anim,.avf.f-anim>*{animation:none}}
.who .av{display:inline-flex}
.lvchip{background:#fde047;color:#422006;font-weight:800;font-size:.72rem;border-radius:99px;padding:2px 8px;white-space:nowrap}
.boostchip{background:#10b981;color:#fff;font-weight:800;font-size:.75rem;border-radius:99px;padding:4px 10px;white-space:nowrap;align-self:center}
button.hero-av{padding:0;background:rgba(255,255,255,.2);width:76px;height:76px;min-height:0}
.herochest{margin-top:10px;background:#fde047;color:#422006}
.xptoast{position:fixed;left:50%;bottom:22px;transform:translate(-50%,40px);opacity:0;background:#10b981;color:#fff;font-weight:800;padding:8px 16px;border-radius:99px;box-shadow:var(--shadow);transition:.25s;z-index:60;pointer-events:none}
.xptoast.on{transform:translate(-50%,0);opacity:1}
.toast{position:fixed;left:50%;top:70px;transform:translate(-50%,-20px);opacity:0;background:var(--ink);color:var(--bg);font-weight:700;padding:10px 16px;border-radius:14px;box-shadow:var(--shadow);transition:.3s;z-index:70;max-width:min(92vw,520px);text-align:center}
.toast.on{transform:translate(-50%,0);opacity:1}
.toast.rxtoast{background:#a855f7;color:#fff;font-size:1.05rem}
.modal{position:fixed;inset:0;background:rgba(15,12,40,.55);display:grid;place-items:center;z-index:80;padding:16px}
.modalbox{background:var(--card);color:var(--ink);border-radius:22px;padding:20px;max-width:520px;width:100%;max-height:88vh;overflow:auto;box-shadow:0 20px 50px -10px #0008}
.modalbox select{margin:4px 0 8px}
.lvup{text-align:center}
.lvbig{font-family:var(--display);font-size:3rem;font-weight:800;background:linear-gradient(135deg,#f59e0b,#ec4899,#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent;animation:pop .6s ease}
@keyframes pop{0%{transform:scale(.3)}70%{transform:scale(1.15)}100%{transform:scale(1)}}
.unl{text-align:left;max-height:40vh;overflow:auto}
.chests{display:flex;gap:10px;justify-content:center;margin:14px 0}
.chest{background:var(--soft);padding:10px;border-radius:16px;position:relative;display:grid;place-items:center;min-height:100px}
.chest:hover svg{animation:shake .4s}
.chest.open svg .lid{transform:translateY(-16px) rotate(-12deg);transform-origin:10% 100%;transition:.5s}
.chest.open{background:#fde68a;box-shadow:0 0 30px #fbbf24}
.chest.dim{opacity:.5}
.chest .prize{position:absolute;bottom:4px;left:0;right:0;font-weight:800;font-size:.85rem}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px) rotate(-3deg)}75%{transform:translateX(4px) rotate(3deg)}}
.shake{animation:shake .35s}
.custgrid{display:grid;gap:12px}
@media (min-width:760px){.custgrid{grid-template-columns:260px 1fr}}
.custprev .avf{margin:6px auto}
.custprev button{width:100%;margin-top:8px}
.partchips .chip.on,.chip.on{background:var(--brand);color:var(--brand-ink)}
.optgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(86px,1fr));gap:8px;margin-top:10px}
.avopt{flex-direction:column;background:var(--soft);color:var(--ink);padding:8px 4px;gap:4px;border:2px solid transparent;min-height:0}
.avopt.on{border-color:var(--brand);background:color-mix(in srgb,var(--brand) 14%,var(--card))}
.avopt:disabled{opacity:.5}
.avopt small{font-size:.7rem;font-weight:700;line-height:1.1}
.avopt .avsvg{border-radius:50%}
.chip small{font-weight:700;opacity:.75}
.swatch{display:inline-block;width:14px;height:14px;border-radius:50%;margin-right:6px;vertical-align:-2px;background:#4f46e5}
.sw-ocean{background:#0284c7}.sw-forest{background:#15803d}.sw-sunset{background:#ea580c}.sw-grape{background:#7e22ce}.sw-midnight{background:#0f172a}.sw-royal{background:#b8860b}
.unlist p{margin:.2em 0;font-size:.88rem}
.nc-rainbow{background:linear-gradient(90deg,#ef4444,#f59e0b,#22c55e,#3b82f6,#a855f7);-webkit-background-clip:text;background-clip:text;color:transparent}
.improved{background:color-mix(in srgb,#10b981 14%,transparent);border-radius:12px;padding:6px 10px;font-size:.82rem}
.st-a{color:var(--ok)!important}.st-g{color:var(--warn)!important}.st-d{color:var(--bad)!important}
.seg.small button{font-size:.78rem;padding:6px 8px;min-height:34px}
/* site themes (unlocked by level) – change the brand colours, keep light/dark */
:root[data-skin="ocean"]{--brand:#0284c7;--brand-2:#0ea5e9;--learn:linear-gradient(135deg,#0284c7,#06b6d4);--soft:#e0f2fe;--bg:#eef8ff}
:root[data-skin="forest"]{--brand:#15803d;--brand-2:#22c55e;--learn:linear-gradient(135deg,#15803d,#65a30d);--soft:#dcfce7;--bg:#f0fbf3}
:root[data-skin="sunset"]{--brand:#ea580c;--brand-2:#f43f5e;--learn:linear-gradient(135deg,#f97316,#e11d48);--soft:#ffedd5;--bg:#fff6ee}
:root[data-skin="grape"]{--brand:#7e22ce;--brand-2:#c026d3;--learn:linear-gradient(135deg,#7e22ce,#db2777);--soft:#f3e8ff;--bg:#faf5ff}
:root[data-skin="midnight"]{--brand:#334155;--brand-2:#1e293b;--learn:linear-gradient(135deg,#0f172a,#334155);--soft:#e2e8f0;--bg:#f1f5f9}
:root[data-skin="royal"]{--brand:#a16207;--brand-2:#7c2d12;--learn:linear-gradient(135deg,#7c2d12,#ca8a04);--soft:#fef3c7;--bg:#fffbeb}
@media (prefers-color-scheme:dark){:root[data-skin]:not([data-theme="light"]){--bg:#12111f;--soft:#2a2746}}
:root[data-skin][data-theme="dark"]{--bg:#12111f;--soft:#2a2746}
/* victory animations */
.victory{position:fixed;inset:0;pointer-events:none;z-index:90;overflow:hidden}
.victory i{position:absolute;top:-20px;width:10px;height:14px;border-radius:2px;animation:fall 2.6s ease-in forwards}
.victory b{position:absolute;top:-50px;font-size:2rem;animation:fall 2.8s ease-in forwards}
.victory.v-trophy b{font-size:6rem;transform:translateX(-50%);animation:drop 1.6s cubic-bezier(.3,1.4,.6,1) forwards}
.victory.v-fireworks i{top:auto;bottom:-10px;width:8px;height:8px;border-radius:50%;animation:burst 1.8s ease-out forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(540deg)}}
@keyframes drop{to{top:35%}}
@keyframes burst{0%{transform:translateY(0)}60%{transform:translateY(-70vh) scale(1)}100%{transform:translateY(-60vh) scale(6);opacity:0}}
@media (prefers-reduced-motion:reduce){.victory{display:none}}

/* ===== Games ===== */
.gtiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.gtile{flex-direction:column;align-items:flex-start;text-align:left;background:var(--card);color:var(--ink);border:2px solid var(--line);border-left:6px solid #a855f7;border-radius:18px;padding:14px 16px;gap:4px;box-shadow:var(--shadow)}
.gtile b{font-family:var(--display);font-size:1.12rem}
.gtile small{color:var(--muted);font-weight:600}
.gtile:disabled{opacity:.55}
.gbadge{display:flex;align-items:center;gap:12px}
.gshort{flex-wrap:wrap}
.feed{margin:.25em 0;font-size:.92rem}
.tier{font-weight:800}
.t-bronze{color:#b45309}.t-silver{color:#64748b}.t-gold{color:#ca8a04}.t-platinum{color:#0891b2}.t-diamond{color:#6366f1}.t-champion{color:#db2777}
.chip.tier{background:var(--soft)}
.radio{display:flex;align-items:center;gap:8px;padding:6px 4px;cursor:pointer;font-weight:600}
.radio input{width:20px;height:20px;accent-color:var(--brand);flex:none}
.radio.inl{display:inline-flex;padding:2px}
.radio.sub{padding-left:28px;font-weight:600;font-size:.94rem}
.fgroup{margin:2px 0 6px 10px;border-left:2px solid var(--line);padding-left:6px}
details>summary{cursor:pointer}
.ghud{display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:8px 12px;box-shadow:var(--shadow);font-weight:700;position:sticky;top:64px;z-index:5}
.ghud #hMe,.ghud #hOpp{font-family:var(--display);font-size:1.3rem;color:var(--brand);min-width:2ch;display:inline-block;text-align:center}
.ghud .gme,.ghud .gopp{display:flex;align-items:center;gap:6px;min-width:0}
.ghud .gopp b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:9em}
.gvs{color:var(--muted);font-size:.85rem}
.gq h3{margin-top:10px}
.opt.gone{visibility:hidden}
.rope{position:relative;height:34px;margin:14px 8px 4px;background:repeating-linear-gradient(90deg,#a16207 0 10px,#ca8a04 10px 20px);border-radius:99px}
.rope .line{position:absolute;top:-8px;bottom:-8px;width:4px;background:var(--bad);border-radius:2px}
.rope .line.l{left:5%}.rope .line.r{right:5%}
.rope .knot{position:absolute;top:50%;width:30px;height:30px;margin:-15px 0 0 -15px;border-radius:50%;background:#ef4444;border:4px solid #fff;box-shadow:var(--shadow);transition:left .4s}
.matchgrid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.matchgrid>div{display:flex;flex-direction:column;gap:8px}
.mitem{background:var(--soft);color:var(--ink);text-align:left;justify-content:flex-start;font-weight:700;font-size:.9rem;padding:10px 12px;border:2px solid transparent;line-height:1.25}
.mitem.on{border-color:var(--brand)}
.mitem.done{background:var(--ok-soft);color:var(--ok);opacity:.65}
.tfrow{justify-content:center}
.tfrow .tfb{flex:1;max-width:260px}
.tfb.ok{background:#16a34a;color:#fff}.tfb.bad{background:#dc2626;color:#fff}
.bigidea2{font-weight:800;font-size:1.1rem;background:var(--soft);border-radius:14px;padding:10px 14px}
.gwgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}
.gwcard{flex-direction:column;background:linear-gradient(180deg,var(--card),var(--soft));color:var(--ink);border:2px solid var(--line);border-radius:14px;padding:10px 6px;min-height:76px;gap:2px;text-align:center;line-height:1.15}
.gwcard b{font-size:.84rem}
.gwcard small{color:var(--muted)}
.gwcard.out{opacity:.25;filter:grayscale(1)}
.gwcard.flip{background:repeating-linear-gradient(45deg,var(--soft) 0 8px,var(--line) 8px 16px);color:transparent}
.gwcard.flip *{visibility:hidden}
.gwlog{margin-top:8px;max-height:220px;overflow:auto}
.gwlog p{margin:.2em 0}
.reactbar{margin:6px 0}
.reactbar summary{font-weight:700;color:var(--brand)}
.rxlist{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.rx{background:var(--soft);color:var(--ink);font-size:.82rem;padding:6px 10px;min-height:36px}
.rx.cheeky{background:color-mix(in srgb,#a855f7 16%,var(--card))}
.bigscore{font-family:var(--display);font-size:3.4rem;font-weight:800;color:var(--brand);line-height:1}
.resultcard.w{border:3px solid #10b981}.resultcard.l{border:3px solid var(--line)}
.vsline{font-size:1.2rem}
.spinner{width:42px;height:42px;border:5px solid var(--soft);border-top-color:var(--brand);border-radius:50%;margin:14px auto;animation:spinframe 1s linear infinite}
.pickrow{display:flex;align-items:center;gap:10px;min-width:0}
.pickrow small{color:var(--muted);font-weight:700}
.pulse{animation:pop 1s ease infinite alternate}
.invpop{position:fixed;right:16px;bottom:16px;width:min(360px,calc(100vw - 32px));background:var(--card);color:var(--ink);border:3px solid #a855f7;border-radius:20px;padding:14px;z-index:85;box-shadow:0 20px 40px -10px #0008;animation:pop .4s ease}
.invt{font-family:var(--display);font-size:1.6rem;color:#a855f7}
.left{text-align:left}
.board.big li{padding:8px}
/* Music (Y13) */
.t-music{background:linear-gradient(135deg,#6d28d9,#a855f7)}
a.songtile{text-decoration:none;color:var(--ink)}
.songnum{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#6d28d9,#a855f7);color:#fff;font-weight:800;flex:none}
.bigtile.t-music + .bigtile.t-tech{grid-column:auto;flex-direction:column;align-items:flex-start;justify-content:flex-end;padding:18px}
.bigtile.t-music + .bigtile.t-tech .techabc{order:-1;margin-bottom:auto;font-size:2rem}
.pagehead.t-music{color:#fff}
.bigtile.t-music{aspect-ratio:900/589;height:auto}
.bigtile.t-music{min-height:0;min-width:0}
@media (max-width:560px){.bigtile.t-music{grid-column:1/-1}
  .bigtile.t-music + .bigtile.t-tech{grid-column:1/-1;flex-direction:row;align-items:center;justify-content:space-between;min-height:96px}
  .bigtile.t-music + .bigtile.t-tech .techabc{order:0;margin:0;font-size:1.4rem}}
.songcard audio{width:100%;margin-top:6px}