/* The teacher loop (ported from Paaro, v3). Scoped under .pt; components/css/tools.css fits it into Shaaro's shell. */
/* the site footer under the tool (as pd.css) */
.appfoot{display:flex;flex-wrap:wrap;gap:6px 16px;justify-content:center;padding:28px 12px 20px;border-top:1px solid #DCE8E2;font-size:13px;font-family:'Noto Sans','Noto Sans Bengali',system-ui,sans-serif;background:#F2F7F4}
.appfoot a{color:#4F665E;text-decoration:none}
.appfoot a:hover{color:#0B5C4D;text-decoration:underline}
.pt{--green:#0B5C4D;--green-2:#0F7A66;--green-soft:#E6F4EE;--sun:#FFC93C;--sun-soft:#FFF4D1;--ink:#12241E;--body:#43574F;--mut:#5F7169;--line:#DDE9E3;--blue:#2F6FB3;--blue-soft:#EEF4FB;--red:#B3261E;
 --f:'Noto Sans','Noto Sans Bengali',system-ui,sans-serif;font-family:var(--f);color:var(--ink);font-size:16px;line-height:1.55;min-height:60vh}
.pt *{box-sizing:border-box}
.pt button{font-family:inherit;cursor:pointer}
.pt .w{max-width:1100px;margin:0 auto;padding:18px 16px 0}
.pt .frame{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-bottom:32px;display:flex;flex-direction:column;min-height:560px}
.pt .top{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);min-height:58px}
.pt .back{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:20px;flex:none;color:var(--ink)}
.pt .ttl{font-weight:800;color:var(--green);font-size:17px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pt .sp{flex:1}
.pt .timechip{font-size:13px;font-weight:700;color:var(--green);background:var(--green-soft);border-radius:99px;padding:3px 10px;white-space:nowrap}
@media(max-width:480px){.pt .timechip{display:none}}
.pt .hbtn{border:1.5px solid var(--green);background:#fff;color:var(--green);border-radius:99px;min-height:44px;padding:0 14px;font:700 14px var(--f);flex:none}
.pt .prog{height:6px;background:var(--line)}.pt .prog i{display:block;height:100%;background:var(--green-2);transition:width .3s}
.pt .body{padding:22px;flex:1;max-width:820px;width:100%;margin:0 auto}
.pt h1{font-size:clamp(22px,3vw,30px);line-height:1.3;margin:0 0 6px;text-wrap:balance}
.pt h2{font-size:19px;margin:22px 0 10px;text-wrap:balance}
.pt .lede{color:var(--body);margin:0 0 18px;max-width:62ch}
.pt .mt{font-size:13px;color:var(--mut)}
.pt .btn{font:700 16px var(--f);min-height:52px;padding:0 22px;border-radius:12px;border:0;background:var(--green);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:10px;text-decoration:none}
.pt .btn.full{width:100%}.pt .btn.ghost{background:#fff;color:var(--green);border:1.5px solid var(--green)}.pt .btn.sun{background:var(--sun);color:#3a2c00}
.pt .btn.light{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.pt .btn.sm{min-height:44px;padding:0 14px;font-size:14px}
.pt .btn[disabled]{opacity:.4;cursor:not-allowed}
.pt .link{background:none;border:0;color:var(--green);font:700 15px var(--f);min-height:44px;padding:0;text-decoration:none;display:inline-flex;align-items:center}
.pt .link.red{color:var(--red)}
.pt .stack{display:flex;flex-direction:column;gap:12px}
.pt .choice{display:flex;gap:14px;align-items:center;text-align:left;width:100%;border:1.5px solid var(--line);background:#fff;border-radius:14px;padding:14px 16px;font:inherit;color:var(--ink);min-height:64px;text-decoration:none}
.pt .choice.on{border-color:var(--green);background:var(--green-soft)}
.pt .choice.col{flex-direction:column;align-items:flex-start;gap:2px}
.pt .choice .ic{width:42px;height:42px;border-radius:12px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;flex:none}
.pt .choice .ic svg{width:22px;height:22px}
.pt .choice b{display:block;font-size:17px}.pt .choice.col b{font-size:15px}.pt .choice small{color:var(--mut);font-size:14px}
.pt .chips{display:flex;flex-wrap:wrap;gap:10px}
.pt .chip{border:1.5px solid var(--line);background:#fff;border-radius:99px;min-height:46px;padding:0 18px;font:700 15px var(--f);color:var(--body)}
.pt .chip.on{border-color:var(--green);background:var(--green);color:#fff}
.pt .chip.soft.on{background:var(--green-soft);color:var(--green)}
.pt input[type=text],.pt input[type=tel],.pt input[type=number],.pt select,.pt textarea{font:600 16px var(--f);min-height:48px;border:1.5px solid var(--line);border-radius:12px;padding:0 14px;background:#fff;color:var(--ink);width:100%;max-width:100%}
.pt textarea{padding:10px 14px;min-height:140px;font-weight:500}
.pt input:focus,.pt select:focus,.pt textarea:focus,.pt button:focus-visible{outline:3px solid var(--green-soft);border-color:var(--green)}
.pt label.f{display:block;font-weight:700;font-size:14px;margin:14px 0 6px}
.pt .act{border-top:1px solid var(--line);background:#fff;padding:12px 18px;display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;position:sticky;bottom:0;z-index:2}
.pt .act .meta{font-size:14px;color:var(--mut);font-weight:600}
.pt .act .row{display:flex;gap:8px;flex-wrap:wrap}
.pt .note{background:var(--sun-soft);border-radius:12px;padding:12px 14px;font-size:14px;color:#5b4300}
.pt .ok{background:var(--green-soft);border-radius:12px;padding:12px 14px;font-size:15px;color:var(--green);font-weight:600}
.pt .or{display:flex;align-items:center;gap:10px;color:var(--mut);font-size:13px;margin:6px 0}.pt .or::before,.pt .or::after{content:"";flex:1;height:1px;background:var(--line)}
.pt .gbtn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:52px;border:1.5px solid var(--line);border-radius:12px;background:#fff;font:700 16px var(--f);color:var(--ink);text-decoration:none}
.pt .g4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.pt .g2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media(max-width:760px){.pt .g4{grid-template-columns:repeat(2,minmax(0,1fr))}.pt .g2{grid-template-columns:minmax(0,1fr)}}
.pt .cls{border:1.5px solid var(--line);border-radius:16px;padding:16px;background:#fff;display:flex;flex-direction:column;gap:8px;min-width:0}
.pt .cls .hd{display:flex;gap:10px;align-items:center}
.pt .cls .tag{font-size:12px;font-weight:700;border-radius:99px;padding:2px 10px;background:var(--blue-soft);color:var(--blue)}
.pt .cls b{font-size:18px}
.pt .cls .row{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}
.pt .cls.add{border-style:dashed;align-items:center;justify-content:center;font:700 16px var(--f);color:var(--green);min-height:120px}
.pt .tile b{font-size:24px;font-variant-numeric:tabular-nums}
.pt .addrow{border:1.5px dashed #b9c8c1;border-radius:14px;padding:14px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;align-items:end}
@media(max-width:760px){.pt .addrow{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.pt .addrow label{font-size:13px;font-weight:700;display:block;margin-bottom:4px}
.pt .addrow .all{grid-column:1/-1}
.pt .list{display:flex;flex-direction:column;gap:8px}
.pt .li{display:flex;gap:12px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.pt .li.on{border-color:var(--green);background:var(--green-soft)}
.pt .li .tx{flex:1;min-width:0}
.pt .lv{font-size:12px;font-weight:700;border-radius:99px;padding:1px 8px;background:var(--green-soft);color:var(--green);white-space:nowrap}
.pt .lv.smp{background:var(--sun-soft);color:#6b4b00}
.pt .qbig{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.35;margin:8px 0 16px;text-wrap:balance}
.pt .opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
@media(max-width:620px){.pt .opts{grid-template-columns:minmax(0,1fr)}}
.pt .opt{border:1.5px solid var(--line);border-radius:14px;padding:14px;font-size:20px;font-weight:600;display:flex;gap:12px;align-items:center;min-width:0}
.pt .opt b{width:40px;height:40px;border-radius:10px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;flex:none}
.pt .opt.ans{border-color:var(--green-2);background:var(--green-soft)}
.pt .step{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.pt .step button{width:52px;height:52px;border-radius:14px;border:1.5px solid var(--line);background:#fff;font:800 24px var(--f);color:var(--ink)}
.pt .step .n{font-size:34px;font-weight:800;min-width:90px;text-align:center;font-variant-numeric:tabular-nums}
.pt .rolls{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:6px}
@media(max-width:620px){.pt .rolls{grid-template-columns:repeat(6,minmax(0,1fr))}}
.pt .rolls button{aspect-ratio:1;border-radius:8px;border:1px solid var(--line);background:#fff;font:700 13px var(--f);color:var(--mut);padding:0;min-height:40px}
.pt .rolls button.r{background:var(--green-2);color:#fff;border-color:var(--green-2)}.pt .rolls button.w{background:var(--sun);color:#3a2c00;border-color:var(--sun)}
.pt .rolls button.in{background:var(--green-soft);color:var(--green);border-color:var(--green-2)}
.pt .bars{display:flex;flex-direction:column;gap:8px}
.pt .bar{display:grid;grid-template-columns:minmax(0,1fr) 120px 48px;gap:10px;align-items:center;font-size:14px}
@media(max-width:620px){.pt .bar{grid-template-columns:minmax(0,1fr) 70px 44px}}
.pt .bar>span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pt .bar .t{height:12px;border-radius:99px;background:var(--line);overflow:hidden}.pt .bar .t i{display:block;height:100%;background:var(--green-2)}
.pt .bar .n{font-weight:800;text-align:right;font-variant-numeric:tabular-nums}
.pt .big{font-size:44px;font-weight:800;color:var(--green);line-height:1}
.pt .code{font:800 30px ui-monospace,monospace;letter-spacing:.12em;background:var(--green-soft);color:var(--green);border-radius:14px;padding:14px 18px;text-align:center}
.pt table.h{width:100%;border-collapse:collapse;font-size:14px}.pt table.h td,.pt table.h th{border-bottom:1px solid var(--line);padding:9px 6px;text-align:left}.pt table.h th{color:var(--mut);font-size:13px}
.pt .scroll{overflow-x:auto}
.pt .check{display:flex;gap:8px;align-items:center;font-size:14px;color:var(--body);margin:8px 0}
.pt .check input{width:20px;height:20px;accent-color:var(--green);flex:none}
/* card mode */
.pt .cam{position:relative;background:#10201A;border-radius:16px;aspect-ratio:4/3;overflow:hidden;margin-bottom:10px}
.pt .cam video,.pt .cam canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pt .cam .err{position:absolute;inset:0;display:grid;place-items:center;color:#fff;text-align:center;padding:20px;font-weight:600}
/* the card preview */
.pt .pv{border:1px solid var(--line);border-radius:10px;padding:14px;max-width:420px;aspect-ratio:210/297;display:grid;gap:10px;background:#fff;position:relative}
.pt .pv .cd,.pa .cd{position:relative;display:grid;place-items:center;border:1px dashed #b9c8c1;border-radius:6px;padding:14px;min-height:0}
.pt .pv svg{width:62%;height:auto}
.pt .pv .l,.pa .l{position:absolute;font-weight:800;line-height:1;color:#111}
.pt .pv .t,.pa .t{top:4px;left:50%;transform:translateX(-50%)}.pt .pv .r,.pa .r{right:4px;top:50%;transform:translateY(-50%) rotate(90deg)}
.pt .pv .b,.pa .b{bottom:4px;left:50%;transform:translateX(-50%) rotate(180deg)}.pt .pv .lf,.pa .lf{left:4px;top:50%;transform:translateY(-50%) rotate(-90deg)}
.pt .pv .no{position:absolute;bottom:4px;right:8px;font-size:11px;color:var(--mut)}
.pt .pv .ft{position:absolute;bottom:2px;left:0;right:0;text-align:center;font-size:9px;color:#9fb3ab}
/* the TV view: the question fills the screen */
body.pt-tv .pt .qbig{font-size:clamp(30px,5vw,60px)}
body.pt-tv .pt .opt{font-size:clamp(22px,3vw,40px)}
body.pt-full .sitehead,body.pt-full .appfoot{display:none}
/* sheets and toast (outside #root) */
#sheet.pt .scrim{position:fixed;inset:0;background:rgba(11,42,32,.5);display:flex;align-items:flex-end;justify-content:center;z-index:50}
#sheet.pt .sheet{background:#fff;border-radius:20px 20px 0 0;padding:20px;width:100%;max-width:520px;display:grid;gap:10px;max-height:90vh;overflow:auto}
#sheet.pt .sheet h2{margin:0}
/* #sheet, #toast and #printArea carry .pt for its tokens, never its page height */
#toast.pt,#sheet.pt,#printArea.pt{min-height:0}
#toast.pt{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#12241E;color:#fff;padding:12px 18px;border-radius:12px;font-weight:600;z-index:60;display:none;max-width:calc(100% - 32px)}
#toast.pt.on{display:block}
/* print: answer cards, 1, 2 or 4 an A4 page, black and white, the footer only */
#printArea{display:none}
.pa{font-family:'Noto Sans','Noto Sans Bengali',system-ui,sans-serif;color:#111}
.pa .a4{height:252mm;display:grid;gap:6mm;position:relative;padding-bottom:8mm}
.pa .a4.n1{grid-template-rows:1fr}.pa .a4.n2{grid-template-rows:1fr 1fr}.pa .a4.n4{grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}
.pa .cd{border:0}
.pa .cd svg{width:auto;height:72%;max-width:80%}
.pa .n1 .l{font-size:20mm}.pa .n2 .l{font-size:13mm}.pa .n4 .l{font-size:9mm}
.pa .no{position:absolute;right:2mm;bottom:2mm;font-size:9pt;font-weight:700}
.pa .nm{position:absolute;left:2mm;bottom:2mm;font-size:9pt}
.pa .ft{position:absolute;left:0;right:0;bottom:0;text-align:center;font-size:9pt;color:#444}
@media print{
 @page{size:A4;margin:1in 0.7in 0.7in 1in}
 html,body{background:#fff!important}
 body>*:not(#printArea){display:none!important}
 #printArea{display:block!important}
 .pa .a4{break-after:page;page-break-after:always}
 .pa .a4:last-child{break-after:auto;page-break-after:auto}
}
/* the roll number: small, medium or big, on the preview and the printed card */
.pt .pv .no{font-weight:800;color:#111}.pt .pv.no-sm .no{font-size:10px}.pt .pv.no-md .no{font-size:14px}.pt .pv.no-lg .no{font-size:22px}
.pa.no-sm .no{font-size:9pt}.pa.no-md .no{font-size:16pt}.pa.no-lg .no{font-size:28pt}
.pa.no-lg .n4 .no{font-size:20pt}