/* Krish Simplifies test player. Answer-booklet column; exam sheets carry a red margin rule, marks appear as red-pen circles.
   Everything is scoped to .tp so it never touches the rest of the site. Fonts are self-hosted. */
@font-face{font-family:Caveat;font-weight:700;font-display:swap;src:url(fonts/Caveat-700.woff2)}
.tp{
  --paper:#f3f6fb; --sheet:#ffffff; --ink:#16203a; --muted:#58647f; --rule:#d8dfec; --line:#e6ebf4;
  --blue:#2146c4; --blue-soft:#e7edfc; --red:#c4232c; --red-soft:#fbeaeb; --green:#18774a; --green-soft:#e3f4ea;
  --amber:#9a5c00; --amber-soft:#fdf1dc;
  --display:PJ, "Segoe UI", system-ui, sans-serif; --body:PJ, "Segoe UI", system-ui, sans-serif;
  --mono:SpaceMono, ui-monospace, "SF Mono", Menlo, monospace; --hand:Caveat, "Comic Sans MS", cursive;
  --r:10px;
}
/* Dark by default, like the rest of the site (7 Nov 2026); a page can still ask for light with data-theme="light". */
@media all{
  :root:not([data-theme="light"]) .tp{
    --paper:#0e1422; --sheet:#151d30; --ink:#e5eaf5; --muted:#9ba7c2; --rule:#2a3552; --line:#212b43;
    --blue:#8fa9ff; --blue-soft:#1b2950; --red:#ff7c80; --red-soft:#3b1c24; --green:#62d49d; --green-soft:#16352a;
    --amber:#f1b65c; --amber-soft:#3a2a12; color-scheme:dark;
  }
  :root:not([data-theme="light"]) body{background:#0A0C11}
}
:root[data-theme="dark"] .tp{
  --paper:#0e1422; --sheet:#151d30; --ink:#e5eaf5; --muted:#9ba7c2; --rule:#2a3552; --line:#212b43;
  --blue:#8fa9ff; --blue-soft:#1b2950; --red:#ff7c80; --red-soft:#3b1c24; --green:#62d49d; --green-soft:#16352a;
  --amber:#f1b65c; --amber-soft:#3a2a12; color-scheme:dark;
}
:root[data-theme="dark"] body{background:#0e1422}

.tp{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;font-weight:500;line-height:1.55;
  max-width:812px;margin:0 auto;padding:0 max(16px, env(safe-area-inset-left, 0px)) 40px max(16px, env(safe-area-inset-right, 0px));min-width:0}
.tp *{box-sizing:border-box}
.tp p{margin:0}
.tp h1,.tp h2,.tp h3{font-family:var(--display);font-weight:800;text-wrap:balance;line-height:1.15;margin:0;letter-spacing:-.01em}
.tp button{font:inherit;cursor:pointer}
.tp a{color:var(--blue)}
.tp :focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:4px;box-shadow:none}
.tp [hidden]{display:none!important}
.tp-exam .top{position:static}

/* top bar */
.tp-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:24px 18px}
.tp-brand{display:flex;flex-direction:column;gap:2px}
.tp-brand small{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:800}
.tp-brand h1{font-size:30px}
.tp .tabs{display:flex;gap:4px;background:var(--sheet);border:1px solid var(--rule);border-radius:999px;padding:4px}
.tp .tabs button{border:0;background:transparent;color:var(--muted);padding:7px 16px;border-radius:999px;font-weight:800;font-size:14px}
.tp .tabs button[aria-current="page"]{background:var(--blue);color:var(--sheet)}

/* generic */
.tp .tb{display:inline-block;text-decoration:none;border:1.5px solid var(--rule);background:var(--sheet);color:var(--ink);padding:9px 16px;border-radius:8px;font-weight:800;font-size:15px;line-height:1.35;font-family:var(--body);text-align:center}
.tp .tb:hover{border-color:var(--blue);color:var(--blue)}
.tp .tb.primary{background:var(--blue);border-color:var(--blue);color:var(--sheet)}
.tp .tb.primary:hover{filter:brightness(1.08);color:var(--sheet)}
.tp .tb.big{padding:12px 26px;font-size:17px}
.tp .tb.danger{background:var(--red);border-color:var(--red);color:var(--sheet)}
.tp .tb.danger-o{color:var(--red);border-color:color-mix(in srgb, var(--red) 45%, transparent)}
.tp .tb.danger-o:hover{border-color:var(--red);color:var(--red)}
.tp .tb:disabled{opacity:.5;cursor:not-allowed}
.tp .eyebrow{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:800}
.tp .muted{color:var(--muted)}
.tp .quiet{font-size:14px;color:var(--muted);font-style:italic}
.tp .notice{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r);padding:22px;display:grid;gap:8px;justify-items:start}
.tp .banner{border-radius:var(--r);padding:14px 16px;display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.tp .banner.amber{background:var(--amber-soft);color:var(--ink);border:1px solid color-mix(in srgb, var(--amber) 35%, transparent)}
.tp .banner.red{background:var(--red-soft);border:1px solid color-mix(in srgb, var(--red) 35%, transparent)}
.tp .stack{display:grid;gap:18px;min-width:0}
.tp .tnum{font-variant-numeric:tabular-nums}
.tp .row-acts,.tp .start-acts{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.tp-foot{margin-top:34px!important;padding-top:14px;border-top:1px solid var(--rule);font-size:14px;color:var(--muted);text-align:center}

/* home */
.tp .hello{font-family:var(--display);font-size:20px;font-weight:800;margin-block:4px 18px;line-height:1.35}
.tp .grade-d{border-left:3px solid var(--blue);padding-left:14px}
.tp .grade-d+.grade-d{margin-top:26px}
.tp .grade-d>summary{display:flex;justify-content:space-between;align-items:center;gap:6px 12px;flex-wrap:wrap;padding-block:6px}
.tp .grade-d>summary .caret{border-left-width:8px;border-top-width:6px;border-bottom-width:6px;border-left-color:var(--blue)}
.tp .gline{font-size:14px;color:var(--muted);margin:2px 0 12px}
.tp .grade-h{font-family:var(--display);font-size:24px;font-weight:800}
.tp .subjects{display:grid;gap:14px}
.tp details>summary{list-style:none;cursor:pointer}
.tp details>summary::-webkit-details-marker{display:none}
.tp .caret{width:0;height:0;border-left:6px solid var(--muted);border-top:5px solid transparent;border-bottom:5px solid transparent;transition:transform .15s;flex-shrink:0}
.tp details[open]>summary .caret{transform:rotate(90deg)}
@media (prefers-reduced-motion:reduce){.tp .caret{transition:none}}
.tp .subj{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r);overflow:hidden}
.tp .subj>summary{display:flex;justify-content:space-between;align-items:center;gap:6px 10px;flex-wrap:wrap;padding:14px 18px;font-family:var(--display);font-size:19px}
.tp .sum-main{display:flex;align-items:center;gap:10px;min-width:0}
.tp .sum-meta{font-family:var(--body);font-size:14px;color:var(--muted)}
.tp .chlist{border-top:1px solid var(--rule)}
.tp .ch{border-top:1px solid var(--line)}
.tp .ch:first-child{border-top:0}
.tp .ch>summary{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 18px}
.tp .ch>summary:hover{background:var(--paper)}
.tp .ch[open]>summary{background:var(--blue-soft)}
.tp .chno{font-family:var(--mono);font-weight:700;font-size:13px;color:var(--muted);min-width:4.6em}
.tp .cht{font-weight:800;min-width:0}
.tp .ch-right{display:flex;gap:8px;align-items:center;flex-shrink:0}
.tp .ch-score{font-family:var(--mono);font-weight:700;color:var(--red);font-size:14px}
.tp .ch .papers{padding-left:24px;background:var(--sheet)}
.tp .papers{display:grid}
.tp .paper{padding:16px 18px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 16px;align-items:center;border-top:1px solid var(--line)}
.tp .ch .paper{border-top:1px solid var(--line)}
.tp .paper .pname{font-weight:800;font-size:17px}
.tp .paper .focus{color:var(--muted);font-size:14px;margin:2px 0 0}
.tp .paper .stats{display:flex;gap:4px 14px;flex-wrap:wrap;font-size:14px;margin-top:6px}
.tp .paper .stats b{font-family:var(--mono);font-weight:700}
.tp .paper .actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.tp .ch-tools{padding:12px 18px 0;display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
@media (max-width:560px){
  .tp .paper{grid-template-columns:1fr}.tp .paper .actions{justify-content:flex-start}
  .tp .ch>summary{flex-wrap:wrap}.tp .ch .papers{padding-left:0}.tp .ch-tools{justify-content:flex-start}
  .tp .subj>summary,.tp .ch>summary,.tp .paper{padding-inline:14px}
}

/* start screen */
.tp .start-h{font-size:26px}
.tp .rules{margin:4px 0 6px;padding-left:20px;display:grid;gap:6px}
.tp .sub-card{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px 18px}
.tp .sub-card p{margin-top:2px}
.tp .yt{width:46px;height:32px;border-radius:9px;background:#e62117;display:grid;place-items:center}
.tp .yt span{width:0;height:0;border-left:12px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent;margin-left:3px}
@media (max-width:560px){.tp .sub-card{grid-template-columns:auto minmax(0,1fr)}.tp .sub-card .tb{grid-column:1/-1;justify-self:start}}

/* exam */
.tp .exambar{position:sticky;top:env(safe-area-inset-top, 0px);z-index:5;background:var(--paper);padding-block:12px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--rule);margin-bottom:18px}
.tp .exambar .tt{min-width:0}
.tp .exambar .tt b{display:block;font-family:var(--display);font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tp .exambar .tt span{font-size:13px;color:var(--muted)}
.tp .timer{font-family:var(--mono);font-weight:700;font-size:22px;padding:4px 10px;border-radius:8px;background:var(--sheet);border:1.5px solid var(--rule);font-variant-numeric:tabular-nums}
.tp .timer.warn{color:var(--red);border-color:var(--red);background:var(--red-soft)}
.tp .bar-right{display:flex;gap:10px;align-items:center;flex-shrink:0}
.tp .saved{font-size:12px;color:var(--muted);min-width:56px;text-align:right}
@media (max-width:560px){.tp .exambar{flex-wrap:wrap;gap:8px}.tp .exambar .tt{flex:1 1 100%}.tp .bar-right{flex:1 1 100%;justify-content:flex-end}.tp .saved{margin-right:auto;text-align:left}}
.tp .sheet{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r);padding:26px 22px 26px 46px;position:relative;min-width:0}
.tp .sheet::before{content:"";position:absolute;top:0;bottom:0;left:30px;width:2px;background:color-mix(in srgb, var(--red) 45%, transparent)}
@media (max-width:560px){.tp .sheet{padding:20px 14px 20px 30px}.tp .sheet::before{left:18px}}
.tp .paper-title{text-align:center;display:grid;gap:4px;padding-bottom:16px;border-bottom:1.5px solid var(--ink);margin-bottom:8px}
.tp .paper-title h2{font-size:22px}
.tp .paper-title .row{display:flex;justify-content:space-between;gap:4px 12px;flex-wrap:wrap;font-size:14px;font-weight:800;margin-top:6px}
.tp .how{font-size:14px;color:var(--muted);margin:12px 0 4px}
.tp .q{padding-top:22px;display:grid;gap:14px;min-width:0}
.tp .q-head{display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.tp .q-head h3{font-size:18px}
.tp .qm{font-family:var(--mono);font-weight:700;font-size:15px;white-space:nowrap}
.tp .qi{margin:-6px 0 0;font-style:italic;color:var(--muted)}
.tp .item{border:0;margin:0;padding:0;display:grid;gap:8px;min-width:0}
.tp .item legend{padding:0;display:flex;gap:8px;justify-content:space-between;width:100%;font-weight:800;margin-bottom:8px}
.tp .ino{color:var(--muted);font-weight:800;min-width:2.2em;display:inline-block}
.tp .im{font-family:var(--mono);font-size:13px;color:var(--muted);white-space:nowrap}
.tp .topts{display:grid;gap:6px;padding-left:2.2em}
@media (max-width:560px){.tp .topts{padding-left:0}}
.tp .topt{display:flex;gap:10px;align-items:flex-start;padding:8px 12px;border:1.5px solid var(--line);border-radius:8px;cursor:pointer;min-width:0;overflow-wrap:anywhere}
.tp .topt:hover{border-color:var(--rule)}
.tp .topt input{margin-top:6px;accent-color:var(--blue);flex-shrink:0}
.tp .topt:has(input:checked){border-color:var(--blue);background:var(--blue-soft)}
.tp .topt .l{font-family:var(--mono);font-weight:700;color:var(--muted)}
.tp .submit-row{display:flex;justify-content:center;padding-top:28px}
.tp .submit-row .tb{padding:12px 28px;font-size:17px}
.tp .end-stars{text-align:center;color:var(--muted);letter-spacing:.4em;padding-top:18px}

/* modal */
.tp .modal{position:fixed;inset:0;background:color-mix(in srgb, var(--ink) 45%, transparent);display:grid;place-items:center;z-index:60;padding:16px}
.tp .modal .box{background:var(--sheet);border-radius:12px;padding:22px;max-width:420px;width:100%;display:grid;gap:12px;border:1px solid var(--rule)}
.tp .modal .box h3{font-size:20px}
.tp .modal .acts{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}

/* marking */
.tp .marking{display:grid;place-items:center;gap:14px;padding:60px 20px;text-align:center}
.tp .pen{width:54px;height:54px;border-radius:50%;border:3px solid var(--red);border-right-color:transparent;animation:tp-spin 1.1s linear infinite}
@keyframes tp-spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.tp .pen{animation:none}}

/* result */
.tp .score-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px 22px;align-items:center}
.tp .circle{width:118px;height:118px;border-radius:50%;border:3px solid var(--red);display:grid;place-items:center;transform:rotate(-6deg);color:var(--red);font-family:var(--hand);line-height:1}
.tp .circle b{font-size:44px;font-weight:700;display:block;text-align:center}
.tp .circle span{font-size:24px;display:block;text-align:center;border-top:2px solid var(--red);padding-top:2px;margin-top:2px}
.tp .score-meta{display:grid;gap:6px;min-width:0}
.tp .score-meta h2{font-size:22px}
.tp .chips{display:flex;gap:8px;flex-wrap:wrap}
.tp .chip{font-size:13px;font-weight:800;padding:3px 10px;border-radius:999px;background:var(--line);color:var(--ink)}
.tp .chip.up{background:var(--green-soft);color:var(--green)}
.tp .chip.down{background:var(--red-soft);color:var(--red)}
.tp .chip.ok{background:var(--blue-soft);color:var(--blue)}
.tp .teacher{font-family:var(--hand);font-size:23px;line-height:1.3;color:var(--red);margin:4px 0 0}
.tp .two2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:560px){.tp .two2{grid-template-columns:1fr}.tp .score-card{grid-template-columns:1fr}.tp .circle{width:104px;height:104px}}
.tp .two2 ul{margin:6px 0 0;padding-left:20px;display:grid;gap:4px}
.tp .mitem{display:grid;gap:6px;padding:14px 0;border-top:1px dashed var(--rule);min-width:0}
.tp .mitem:first-of-type{border-top:0}
.tp .qline{display:flex;justify-content:space-between;gap:12px;font-weight:800}
.tp .mark{font-family:var(--hand);font-size:26px;line-height:1;color:var(--red);white-space:nowrap;font-weight:700}
.tp .yours{color:var(--blue);font-size:16px;white-space:pre-wrap;padding-left:2.2em;margin:0}
.tp .yours.blank{color:var(--muted);font-style:italic}
.tp .model{font-size:14px;background:var(--green-soft);border-radius:8px;padding:8px 12px;margin-left:2.2em}
.tp .model b{color:var(--green)}
.tp .fb{font-family:var(--hand);font-size:21px;line-height:1.25;color:var(--red);padding-left:1.4em;margin:0}
.tp .rewatch{justify-self:start;margin-left:2.2em;font-size:14px;font-weight:800;text-decoration:none;color:var(--blue);border:1.5px solid color-mix(in srgb, var(--blue) 40%, transparent);border-radius:999px;padding:3px 12px;display:inline-block}
.tp .rewatch:hover{border-color:var(--blue)}
.tp .sec-score{font-family:var(--mono);font-weight:700;color:var(--red)}
@media (max-width:560px){.tp .yours,.tp .fb{padding-left:0}.tp .model,.tp .rewatch{margin-left:0}}

/* revise */
.tp .rev{display:grid;gap:10px}
.tp .reveal{display:grid;gap:8px}
.tp .reveal>summary{display:inline-block;width:auto;justify-self:start}
.tp .reveal[open]>summary{border-color:var(--green);color:var(--green)}
.tp .reveal .rewatch{margin-left:0}

/* progress */
.tp .tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tp table{border-collapse:collapse;width:100%;font-size:15px}
.tp th,.tp td{padding:9px 10px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.tp th{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.tp td.n,.tp th.n{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
.tp .delta-up{color:var(--green);font-weight:800}
.tp .delta-down{color:var(--red);font-weight:800}
.tp .chart svg{width:100%;height:auto;display:block}
.tp .chart text{fill:var(--muted);font-family:var(--mono);font-size:11px}
.tp .chart .v{fill:var(--ink);font-weight:700}
.tp .bar{fill:var(--blue)}
.tp .bar.last{fill:var(--red)}
.tp .gridl{stroke:var(--line)}
.tp .card{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r);padding:18px;display:grid;gap:12px;min-width:0}
.tp .card h3{font-size:18px}
.tp .clear-card{grid-template-columns:minmax(0,1fr) auto;align-items:center}
@media (max-width:560px){.tp .clear-card{grid-template-columns:1fr}.tp .clear-card .tb{justify-self:start}}
/* everyone's averages (shown only when switched on) */
.pstat{margin:6px 0 0;font-size:13.5px;color:var(--muted);line-height:1.5}
.pstat b{color:var(--ink);font-variant-numeric:tabular-nums}
.pstat-k{font-weight:700;color:var(--blue);margin-right:4px}
.subj>.pstat,.grade-d>.pstat{padding:0 18px 8px}