/* Class analytics: light theme to match the quizzes and lessons. Colour is never the only signal: every cell prints its number. */
:root{--ink:#173c59;--mute:#5b6b78;--line:#dbe4ea;--bg:#f4f8fb;--card:#fff;--blue:#2f6fe0;--blue2:#1d4ed8;--gold:#f3c84b;--warn:#b45309;--bad:#b42318;--good:#0b6e4f;--c0:#d55e00;--c50:#f3efe6;--c100:#0072b2;--accent:#ef7a3a;--accent2:#d9601f;--shadow:0 1px 2px rgba(23,60,89,.07),0 10px 28px rgba(23,60,89,.06)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}
a{color:var(--blue2)}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.top{background:linear-gradient(180deg,#fff,#fbfdff);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:6}.topin{padding-top:14px;padding-bottom:12px}
.top h1{margin:2px 0 0;font-size:27px;letter-spacing:-.01em}.back{font-size:13.5px;font-weight:700;color:var(--mute);text-decoration:none;display:inline-flex;align-items:center;gap:4px}.back:hover{color:var(--blue2)}
.top .kicker{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--accent2);margin:0}
.top .kicker::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:9}
main{padding-bottom:70px}
.msg{min-height:1.4em;font-weight:700;margin:10px 0}.msg.err{color:var(--bad)}.msg.ok{color:var(--good)}
.mute{color:var(--mute);font-size:14px}
.btn{font:700 14px system-ui,sans-serif;padding:9px 14px;border-radius:10px;border:1.5px solid var(--ink);background:#fff;color:var(--ink);cursor:pointer;min-height:40px;text-decoration:none;display:inline-block;transition:background .12s,transform .06s}
.btn:hover{background:#eef4fa}.btn:active{transform:translateY(1px)}.btn.pri{background:var(--accent);border-color:var(--accent);color:#fff}.btn.pri:hover{background:var(--accent2)}
:focus-visible{outline:3px solid #2f6fe0;outline-offset:2px;border-radius:6px}
.testbar{background:#fff8e1;border:1.5px solid var(--gold);border-radius:12px;padding:10px 14px;margin:12px 0}
.bar{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:14px 0;box-shadow:var(--shadow)}
.f{display:flex;flex-direction:column;gap:3px;min-width:0}.f label{font-size:12px;font-weight:700;color:var(--mute);text-transform:uppercase;letter-spacing:.05em}
select{font:15px system-ui;padding:9px 10px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);max-width:260px}
.acts{margin-left:auto;flex-direction:row;gap:8px;align-items:flex-end}
.menu{position:relative}.pop{position:absolute;right:0;top:100%;z-index:5;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px rgba(23,60,89,.15);min-width:210px;padding:6px;margin-top:4px}.pop a{display:block;padding:9px 12px;border-radius:8px;text-decoration:none;color:var(--ink)}.pop a:hover{background:var(--bg)}
.tabs{display:flex;gap:4px;flex-wrap:wrap;margin:14px 0 14px;border-bottom:2px solid var(--line);padding-bottom:0}
.tabs button{font:700 14.5px system-ui;padding:10px 14px 11px;border-radius:0;border:0;border-bottom:3px solid transparent;background:transparent;color:var(--mute);cursor:pointer;min-height:40px;margin-bottom:-2px}
.tabs button:hover{color:var(--ink)}
.tabs button[aria-selected=true]{color:var(--accent2);border-bottom-color:var(--accent)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:14px 0;box-shadow:var(--shadow)}
.card h2{margin:0 0 4px;font-size:19px;display:flex;align-items:center;gap:8px}.card h3{margin:14px 0 6px;font-size:16px}.card .sub{color:var(--mute);font-size:14px;margin:0 0 10px}
.hero{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap;background:linear-gradient(135deg,#173c59,#1f5280);color:#fff;border-radius:18px;padding:20px 22px;margin:14px 0;box-shadow:var(--shadow)}
.hero h2{color:#fff;margin:0 0 4px;font-size:21px}.hero p{margin:0;color:#cfe0ef;font-size:14.5px;max-width:560px}
.hero .heronum{text-align:right}.hero .heronum b{display:block;font-size:40px;line-height:1}.hero .heronum span{font-size:13px;color:#cfe0ef}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0}
.tile{background:#fff;border:1px solid var(--line);border-radius:14px;padding:13px 14px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.tile::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent);opacity:.75}
.tile b{display:block;font-size:28px;line-height:1.15;letter-spacing:-.01em}.tile span{font-size:13px;color:var(--mute);font-weight:600}.tile small{display:block;font-size:12.5px;color:var(--mute);margin-top:2px}
.tile.gauged .tile-row{display:flex;align-items:center;gap:10px}.tile.gauged .tile-row b{font-size:24px}.gauge{flex:none}
.up{color:var(--good)}.down{color:var(--warn)}
.notes{list-style:none;margin:0;padding:0}.notes li{padding:9px 12px;border-left:4px solid var(--gold);background:#fffbea;border-radius:8px;margin:6px 0}
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
table{border-collapse:collapse;width:100%}th,td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--mute);background:var(--bg);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
th button{all:unset;cursor:pointer;font:inherit;text-transform:inherit;letter-spacing:inherit}th button:focus-visible{outline:3px solid var(--blue)}
td a.nick{font-weight:700;color:var(--ink)}
.heat td,.heat th{text-align:center;padding:4px}.heat td.nm,.heat th.nm{text-align:left;position:sticky;left:0;background:#fff;z-index:1;min-width:120px;padding-left:10px}.heat th.nm{background:var(--bg)}
.heat td.c{min-width:74px;height:46px;font-weight:700;font-size:15px;line-height:1.15}.heat td.c small{display:block;font-weight:500;font-size:11px;opacity:.85}
.heat td.na{background:repeating-linear-gradient(45deg,#f1f4f7,#f1f4f7 6px,#e6ebf0 6px,#e6ebf0 12px);color:var(--mute);font-weight:500;font-size:12px}
.heat td[tabindex]{cursor:default}.heat td[tabindex]:focus-visible{outline:3px solid var(--blue);outline-offset:-2px;position:relative;z-index:2}
.heat tr.cls td{border-top:2px solid var(--ink);font-weight:800}
.heat th button{padding:4px}
.legend{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--mute);margin:8px 0}.legend i{display:inline-block;width:150px;height:12px;border-radius:6px;background:linear-gradient(90deg,var(--c0),var(--c50),var(--c100))}.legend .na{display:inline-block;width:22px;height:14px;border-radius:3px;background:repeating-linear-gradient(45deg,#f1f4f7,#f1f4f7 4px,#e0e6ec 4px,#e0e6ec 8px)}
.bars{display:grid;gap:6px}.brow{display:grid;grid-template-columns:minmax(120px,230px) 1fr 90px;gap:10px;align-items:center;font-size:14px}.brow .t{background:#e9eff5;height:14px;border-radius:7px;overflow:hidden}.brow .t i{display:block;height:100%;background:var(--blue)}.brow .t i.low{background:var(--c0)}
.q{border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin:10px 0;background:#fff}.q .qt{font-weight:700;margin:2px 0 6px}.q .meta{font-size:13px;color:var(--mute)}
.q .ans{margin:6px 0;background:#eef8f2;border-left:4px solid var(--good);padding:6px 10px;border-radius:6px;font-size:14.5px}.q .exp{font-size:14px;color:#41525f;margin:4px 0}
.pct{display:inline-block;font-weight:800;border-radius:999px;padding:1px 10px;background:#fdebe2;color:#8a3b0a;border:1px solid #f1b99a}
.picks .brow{grid-template-columns:minmax(120px,1fr) 120px 60px}.picks .t i{background:#d55e00}.picks .right .t i{background:var(--c100)}
.chip{display:inline-block;border-radius:999px;padding:2px 10px;font-size:12.5px;font-weight:700;border:1px solid var(--line);background:var(--bg);margin:2px 4px 2px 0}
.chip.support{background:#fff3e6;border-color:#f1b99a;color:#8a3b0a}.chip.inactive{background:#eef1f5}.chip.strength{background:#e8f6ee;border-color:#a8d9bd;color:#0b5a3e}.chip.new{background:#eef4ff;border-color:#bcd0f7;color:#1d3f8f}
.flags{list-style:none;padding:0;margin:0}.flags li{margin:6px 0;padding:8px 12px;border-radius:10px;border:1px solid var(--line);background:#fff}.flags li.support{border-left:5px solid var(--c0)}.flags li.inactive,.flags li.info{border-left:5px solid #8aa0b2}.flags li.strength{border-left:5px solid var(--c100)}.flags li.new{border-left:5px solid var(--blue)}
.chart svg{width:100%;height:auto;display:block}
.chart text{font:12px system-ui;fill:#41525f}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:14px}
details>summary{cursor:pointer;color:var(--blue2);font-weight:600;margin-top:8px}
.empty{padding:22px;text-align:center;color:var(--mute)}
.overlay{position:fixed;inset:0;background:#0b1d2dee;color:#fff;z-index:30;display:grid;place-items:center;padding:24px;overflow:auto}.overlay[hidden]{display:none}
.overlay .in{max-width:900px;width:100%}.overlay h2{font-size:clamp(26px,4vw,44px);line-height:1.2;margin:0 0 18px}.overlay .opts{display:grid;gap:10px}.overlay .opt{font-size:clamp(18px,2.6vw,28px);padding:12px 18px;border-radius:14px;border:2px solid #ffffff55}.overlay .opt.right{background:#0b6e4f;border-color:#fff}.overlay .btn{margin:16px 8px 0 0}
.foot{color:var(--mute);font-size:13px;margin-top:30px}
[hidden]{display:none!important}
.rep{display:none}
.cmp td b{font-size:16px}.cmp .thisone{background:#fff3e9}.cmp .thisone td:first-child{border-left:3px solid var(--accent)}
.cmp-bars .brow{grid-template-columns:minmax(140px,230px) 1fr 70px}
@media(max-width:640px){.brow{grid-template-columns:1fr 70px}.brow .t{grid-column:1/-1;order:3}.acts{margin-left:0;width:100%}.top h1{font-size:22px}.tile b{font-size:24px}.two{grid-template-columns:1fr}.picks .brow{grid-template-columns:1fr 60px}.picks .t{display:none}}
/* print: a tidy report of what is on screen */
@media print{
 body{background:#fff;font-size:11pt}.noprint,.top,.skip,.testbar,.foot{display:none!important}
 .hero{background:#fff!important;color:var(--ink)!important;border:1px solid #999}.hero h2,.hero p,.hero .heronum span{color:var(--ink)!important}
 .rep{display:block;border-bottom:2px solid #000;margin-bottom:10pt;padding-bottom:6pt}.rep h1{margin:0;font-size:18pt}.rep p{margin:2pt 0;font-size:10pt}
 .card,.tile,.q{break-inside:avoid;border-color:#999}.tw{overflow:visible}
 .heat td.c,.heat td.na{-webkit-print-color-adjust:exact;print-color-adjust:exact}
 .gauge{display:none}
 .brow .t i,.chart svg *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
 body.print-reteach #view>*:not(#reteach){display:none!important}
 body.print-reteach #reteach{display:block!important}
}
table.heat td small,table.heat td span{display:block}
table.heat th.nm,table.heat tbody th{text-transform:none;letter-spacing:0;font-size:14px}