/* ============================================================
   CCAR-F course — design tokens + shell
   Drafting-table identity: ink on vellum, teal for system flow,
   vermilion for annotation, amber for the Candidate voice.
   ============================================================ */
:root{
  --paper:#EDEEEC; --plate:#F7F8F6; --ink:#16262E; --ink-2:#44585F; --ink-3:#7C8D93;
  --rule:#C9D1D0; --rule-soft:#DDE3E1;
  --teal:#0E7C86; --teal-soft:#D7E8E8;
  --pencil:#C4432F; --pencil-soft:#F5DDD8;
  --amber:#B4712A; --amber-soft:#F2E3CB;
  --mark:#F7DE8B; --good:#2E7D5B; --good-soft:#D9EBE2; --cache:#3C6FA8; --warn:#B4712A;
  --shadow:0 1px 0 rgba(22,38,46,.05), 0 12px 32px -20px rgba(22,38,46,.35);
  --f-disp:'Archivo',system-ui,-apple-system,sans-serif;
  --f-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#101A1F; --plate:#16232A; --ink:#E4EBEA; --ink-2:#A2B4B8; --ink-3:#6E8288;
  --rule:#2A3B43; --rule-soft:#22323A;
  --teal:#4CBFC6; --teal-soft:#123840;
  --pencil:#F0705A; --pencil-soft:#3A2119;
  --amber:#D89A4E; --amber-soft:#33291A;
  --mark:#5A4A1E; --good:#5FBF92; --good-soft:#16311F; --cache:#7BA9DC; --warn:#D89A4E;
  --shadow:0 1px 0 rgba(0,0,0,.2), 0 12px 32px -20px rgba(0,0,0,.8);
}}
:root[data-theme="dark"]{
  --paper:#101A1F; --plate:#16232A; --ink:#E4EBEA; --ink-2:#A2B4B8; --ink-3:#6E8288;
  --rule:#2A3B43; --rule-soft:#22323A;
  --teal:#4CBFC6; --teal-soft:#123840;
  --pencil:#F0705A; --pencil-soft:#3A2119;
  --amber:#D89A4E; --amber-soft:#33291A;
  --mark:#5A4A1E; --good:#5FBF92; --good-soft:#16311F; --cache:#7BA9DC; --warn:#D89A4E;
  --shadow:0 1px 0 rgba(0,0,0,.2), 0 12px 32px -20px rgba(0,0,0,.8);
}
/* High-contrast light: same paper family as the default light theme, but every low-alpha
   value from that palette (rule, rule-soft, ink-2, ink-3) pushed dark enough to read as a
   line rather than a suggestion of one — the default light theme's --rule (#C9D1D0, ~L82%)
   sits only ~10 points of lightness off its own --paper (~L92%), which is why borders and
   secondary text disappear on a bright display. Accents are deepened to match. */
:root[data-theme="hc"]{
  --paper:#FFFFFF; --plate:#E7E9E5; --ink:#0A1418; --ink-2:#28363B; --ink-3:#4C5B60;
  --rule:#8A9C9C; --rule-soft:#B3C0BE;
  --teal:#0A5F67; --teal-soft:#C3DEDE;
  --pencil:#9E2E1B; --pencil-soft:#EFCCC4;
  --amber:#7C4A10; --amber-soft:#E7D3AA;
  --mark:#F0CE5E; --good:#1B6142; --good-soft:#C4E0D0; --cache:#204D77; --warn:#7C4A10;
  --shadow:0 1px 0 rgba(10,20,24,.12), 0 12px 32px -20px rgba(10,20,24,.5);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--f-disp);font-size:15px;
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow:hidden}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.mono{font-family:var(--f-mono)}
.eyebrow{font-family:var(--f-mono);font-size:10px;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-3)}

/* ================= shell ================= */
#shell{display:grid;grid-template-columns:264px minmax(0,1fr);height:100vh}
body.present #shell{grid-template-columns:1fr}
body.present #nav{display:none}

/* ---- nav rail ---- */
#nav{border-right:1px solid var(--rule);background:var(--plate);display:flex;flex-direction:column;
  overflow:hidden}
.navhead{padding:16px 16px 13px;border-bottom:1px solid var(--rule)}
.navhead h1{font-size:17px;font-weight:700;letter-spacing:-.015em;margin:3px 0 0}
.navhead .sub{font-family:var(--f-mono);font-size:10px;color:var(--ink-3);margin-top:3px}
#navlist{flex:1;overflow-y:auto;padding:8px 0 20px}
.mod{padding:12px 16px 4px}
.mod .mh{display:flex;align-items:baseline;gap:8px;margin-bottom:7px}
.mod .mh .k{font-family:var(--f-mono);font-size:10px;color:var(--teal);letter-spacing:.06em}
.mod .mh .n{font-size:13px;font-weight:600;letter-spacing:-.005em;flex:1}
.mod .mh .w{font-family:var(--f-mono);font-size:10px;color:var(--ink-3)}
.mod.locked{opacity:.42}
.seg{display:grid;grid-template-columns:15px minmax(0,1fr) auto;gap:8px;align-items:center;
  width:100%;text-align:left;background:none;border:0;color:var(--ink-2);
  padding:6px 8px;border-radius:2px;cursor:pointer;font-size:13px;line-height:1.35}
.seg:hover{background:var(--rule-soft)}
.seg.on{background:var(--ink);color:var(--plate)}
.seg .ix{font-family:var(--f-mono);font-size:9.5px;color:var(--ink-3)}
.seg.on .ix{color:var(--plate);opacity:.7}
.seg .mn{font-family:var(--f-mono);font-size:9.5px;color:var(--ink-3)}
.seg.on .mn{color:var(--plate);opacity:.7}
.seg.done .ix::after{content:'✓';color:var(--good)}
.seg.done .ix{font-size:10px}
.seg.drill .tt::before{content:'◆ ';color:var(--pencil);font-size:9px;vertical-align:1px}
.navfoot{border-top:1px solid var(--rule);padding:11px 14px;display:flex;gap:7px;flex-wrap:wrap}
.navfoot button{flex:1;font-family:var(--f-mono);font-size:10px;letter-spacing:.05em;
  background:none;border:1px solid var(--rule);color:var(--ink-2);border-radius:2px;
  padding:6px 4px;cursor:pointer;white-space:nowrap}
.navfoot button:hover{border-color:var(--teal);color:var(--teal)}
.bar{height:3px;background:var(--rule-soft);border-radius:2px;overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;background:var(--teal);width:0;transition:width .4s}

/* ---- main ---- */
#main{overflow-y:auto;overflow-x:hidden;position:relative}
body.present #main{overflow:hidden;background:var(--paper)}
#stagewrap{position:relative;width:100%}
body.present #stagewrap{height:100vh;display:flex;align-items:center;justify-content:center}
#stagefit{position:relative;overflow:hidden}
#stage{width:1920px;height:1080px;transform-origin:top left;position:relative;
  background:var(--plate);border:1px solid var(--rule)}
body.present #stage{border:0}

/* ================= the 1920x1080 stage ================= */
/* ================= persistent HUD =================
   Always on screen, in both modes: which module, which topic, how far through.
   Sized for a 1920x1080 stage that also has to survive being watched at 360p. */
#hud{position:absolute;top:0;left:0;right:0;padding:22px 34px 0}

#modstrip{display:flex;align-items:baseline;gap:14px;font-family:var(--f-mono);
  font-size:20px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal)}
#modstrip .k{font-weight:700}
#modstrip .n{color:var(--ink-2);letter-spacing:.1em}
#modstrip .sp{flex:1}
#modstrip .w{color:var(--ink-3);letter-spacing:.1em}

#slug{display:flex;align-items:baseline;gap:20px;margin-top:14px}
#slug .t{font-size:46px;font-weight:700;letter-spacing:-.022em;margin:0;flex:1;
  line-height:1.1;text-wrap:balance}
#slug .pos,#slug .n{font-family:var(--f-mono);font-size:17px;color:var(--ink-3);white-space:nowrap}

/* the bar: five domain tracks sized by exam weight, each split into segment cells.
   The active domain's track grows, so current position reads before you read a word. */
#spine{display:flex;gap:12px;margin-top:20px;align-items:flex-end}
.track{display:flex;flex-direction:column;gap:8px;min-width:0}
.track.locked{opacity:.5}
.cells{display:flex;gap:3px;height:12px;transition:height .3s}
.track.on .cells{height:22px}
.cell{flex:1;background:var(--rule);border-radius:2px;position:relative;overflow:hidden;
  transition:background .3s,filter .15s;cursor:default}
.cell.examlink{cursor:pointer}
.cell.done{background:var(--teal)}
.cell.cur{background:var(--rule-soft);box-shadow:inset 0 0 0 2px var(--teal)}
.cell.cur b{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--teal);display:block}
.cell:hover{filter:brightness(1.45)}
.track .lbl{font-family:var(--f-mono);font-size:15px;color:var(--ink-3);letter-spacing:.09em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .3s}
.track.on .lbl{color:var(--teal);font-weight:700}

/* hover preview for a spine cell: lesson name + short description, positioned in
   stage coordinates so it scales with fit() like everything else on the stage */
.spine-tip{position:absolute;top:0;left:0;z-index:9;transform:translate(-50%,10px);
  pointer-events:none;background:var(--ink);color:var(--plate);border-radius:3px;
  padding:10px 14px;max-width:320px;opacity:0;transition:opacity .12s}
.spine-tip.show{opacity:1}
.spine-tip .nm{display:block;font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.25}
.spine-tip .ds{display:block;font-family:var(--f-mono);font-size:12.5px;line-height:1.5;
  opacity:.75;margin-top:5px}
.spine-tip .ds:empty{display:none}

#spinefoot{display:flex;margin-top:9px;font-family:var(--f-mono);font-size:15px;
  color:var(--ink-3);letter-spacing:.06em}
#spinefoot .left{flex:1}
#spinefoot .right{color:var(--teal)}

#canvas{position:absolute;top:236px;left:34px;right:34px;bottom:238px;
  display:flex;align-items:center;justify-content:center}
#canvas > *{max-width:100%;max-height:100%}
#annoUnder,#annoOver{position:absolute;inset:0;pointer-events:none}
#annoUnder{z-index:0} #annoOver{z-index:6}
#canvas .vis{position:relative;z-index:1;width:100%;height:100%;
  display:flex;align-items:center;justify-content:center}

/* caption bar — doubles as the video's lower third */
#caption{position:absolute;left:34px;right:34px;top:848px;bottom:22px;overflow:hidden;
  display:grid;grid-template-columns:190px minmax(0,1fr);gap:26px;align-items:start}
#caption .who{font-family:var(--f-mono);font-size:15px;letter-spacing:.13em;text-align:right;
  padding-top:7px;transition:color .2s}
#caption .line{font-size:28px;line-height:1.4;letter-spacing:-.012em;color:var(--ink-2);
  max-width:50ch}
.w-ARCHITECT{color:var(--teal)} .w-CANDIDATE{color:var(--amber)} .w-EXAMINER{color:var(--pencil)}
#caption .wd{transition:color .1s}
#caption .wd.done{color:var(--ink)}
#caption .wd.lit{color:var(--ink);background:var(--mark);border-radius:3px;padding:0 3px;margin:0 -3px}

/* tip stamp + trap card, present-mode overlays */
#stamp{position:absolute;left:34px;right:34px;bottom:20px;background:var(--ink);color:var(--plate);
  border-radius:3px;padding:16px 22px;display:flex;gap:20px;align-items:flex-start;z-index:8;
  transform:translateY(150%);transition:transform .45s cubic-bezier(.2,.8,.3,1)}
#stamp.show{transform:translateY(0)}
#stamp .lab{font-family:var(--f-mono);font-size:12px;letter-spacing:.15em;color:var(--mark);
  flex:0 0 auto;padding-top:5px}
#stamp .txt{font-size:21px;line-height:1.45;max-width:70ch}
#trapcard{position:absolute;right:34px;top:236px;width:390px;background:var(--pencil);
  color:#fff;border-radius:3px;padding:20px 22px;z-index:8;
  transform:translateX(130%);transition:transform .5s cubic-bezier(.2,.8,.3,1)}
#trapcard.show{transform:translateX(0)}
#trapcard .lab{font-family:var(--f-mono);font-size:11px;letter-spacing:.15em;opacity:.85}
#trapcard .nm{font-size:25px;font-weight:700;letter-spacing:-.015em;margin:7px 0 6px;line-height:1.2}
#trapcard .ds{font-size:16px;line-height:1.5;opacity:.94}

/* ================= explore chrome (outside the stage) ================= */
#below{max-width:1180px;margin:0 auto;padding:22px 26px 90px;display:grid;
  grid-template-columns:minmax(0,1fr) 296px;gap:24px;align-items:start}
@media(max-width:1000px){#below{grid-template-columns:1fr}}
body.drillmode #below{grid-template-columns:minmax(0,1fr)}
body.present #below{display:none}
.card{background:var(--plate);border:1px solid var(--rule);border-radius:3px;box-shadow:var(--shadow)}
.card h2{font-family:var(--f-mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink-3);margin:0;padding:12px 16px;border-bottom:1px solid var(--rule);font-weight:500}
.cardbody{padding:15px 17px}
.take{display:grid;grid-template-columns:16px minmax(0,1fr);gap:10px;padding:6px 0;font-size:14.5px;
  color:var(--ink-2);line-height:1.5}
.take b{color:var(--teal);font-family:var(--f-mono);font-size:11px;padding-top:3px}
.take strong{color:var(--ink);font-weight:600}
#transcript{position:relative;max-height:340px;overflow-y:auto;padding:12px 17px 18px}
.turn{display:grid;grid-template-columns:78px minmax(0,1fr);gap:13px;padding:6px 0;opacity:.45;
  transition:opacity .25s}
.turn.seen{opacity:.66} .turn.cur{opacity:1}
.turn .wh{font-family:var(--f-mono);font-size:9.5px;letter-spacing:.09em;text-align:right;padding-top:4px}
.turn .bd{font-size:15px;line-height:1.6;color:var(--ink-2);max-width:58ch}
.turn.cur .bd{color:var(--ink)}
.turn .wd.done{color:var(--ink)}
.turn .wd.lit{background:var(--ink);color:var(--plate);border-radius:2px}
code{font-family:var(--f-mono);font-size:.9em;background:var(--rule-soft);padding:1px 4px;border-radius:2px}

/* transport */
#transport{position:sticky;bottom:0;z-index:20;background:var(--plate);
  border-top:1px solid var(--rule);display:flex;align-items:center;gap:13px;padding:10px 20px}
body.present #transport{position:fixed;left:0;right:0;bottom:0;opacity:0;transition:opacity .25s;
  border-top:0;background:transparent}
body.present #transport:hover,body.present #transport.show{opacity:1;background:var(--plate)}
#transport button{font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  background:var(--ink);border:1px solid var(--ink);color:var(--plate);border-radius:2px;
  padding:8px 15px;cursor:pointer}
#transport button.ghost{background:none;color:var(--ink)}
#transport button:hover{background:var(--teal);border-color:var(--teal);color:var(--plate)}
#transport button:disabled{opacity:.35;cursor:default}
#scrub{flex:1;accent-color:var(--teal);min-width:80px}
#clock{font-family:var(--f-mono);font-size:11px;color:var(--ink-3);font-variant-numeric:tabular-nums}
#speedSel{font-family:var(--f-mono);font-size:11px;letter-spacing:.03em;
  background:var(--plate);color:var(--ink);border:1px solid var(--rule);
  border-radius:2px;padding:6px 8px;cursor:pointer}
#speedSel:hover{border-color:var(--teal)}
body.present #speedSel{display:none}
#btnPresentExit{display:none}
body.present #btnPresentExit{display:inline-block}

/* trap tracker sidebar */
.trap{display:grid;grid-template-columns:15px minmax(0,1fr);gap:9px;padding:8px 0;
  border-bottom:1px dashed var(--rule-soft);opacity:.4;transition:opacity .4s}
.trap:last-child{border-bottom:0}
.trap.got{opacity:1}
.trap .tk{font-family:var(--f-mono);font-size:11px;color:var(--ink-3)}
.trap.got .tk{color:var(--pencil)}
.trap .nm{display:block;font-size:13.5px;font-weight:600;line-height:1.3;letter-spacing:-.005em}
.trap .ds{display:block;font-family:var(--f-mono);font-size:10.5px;color:var(--ink-3);
  line-height:1.55;margin-top:3px}

/* annotation ink */
.s-pencil{stroke:var(--pencil)} .c-pencil{color:var(--pencil)}
.s-teal{stroke:var(--teal)} .c-teal{color:var(--teal)}
.s-good{stroke:var(--good)} .c-good{color:var(--good)}
.hlpath{fill:var(--mark)}

/* shared primitive vocabulary */
.nd rect{fill:var(--paper);stroke:var(--ink-2);stroke-width:2;transition:stroke .25s,fill .25s}
.nd text{font-family:var(--f-disp);font-weight:600;fill:var(--ink);text-anchor:middle;
  dominant-baseline:middle;font-size:21px}
.nd .sub{font-family:var(--f-mono);font-weight:400;fill:var(--ink-3);font-size:15px}
.nd.on rect{stroke:var(--teal);stroke-width:3.4;fill:var(--teal-soft)}
.nd.dim{opacity:.32}
.ed{fill:none;stroke:var(--rule);stroke-width:2.4;transition:stroke .25s,opacity .3s}
.ed.on{stroke:var(--teal);stroke-width:3.4}
.el{font-family:var(--f-mono);font-size:15px;fill:var(--ink-3);text-anchor:middle;transition:fill .25s}
.el.start{text-anchor:start} .el.end{text-anchor:end}
.el.on{fill:var(--teal)}
svg.prim{width:100%;height:100%;display:block}
@media(prefers-reduced-motion:reduce){*{transition-duration:.01ms!important}}

/* ================= question card (lives inside the 1920x1080 stage) ================= */
.qcard{width:1700px;display:flex;flex-direction:column;gap:18px;transform-origin:center top}
.qc-head{display:flex;align-items:center;gap:22px;font-family:var(--f-mono);font-size:15px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.qc-dom{display:none} .qc-sp{flex:1}
.qcard.notimer .qc-ring{display:none}
.qc-ring{position:relative;width:72px;height:72px;flex:0 0 72px}
.qc-ring svg{transform:rotate(-90deg)}
.qc-ring .bg{fill:none;stroke:var(--rule);stroke-width:5}
.qc-ring .fg{fill:none;stroke:var(--pencil);stroke-width:5;stroke-linecap:round}
.qc-ring b{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--f-mono);font-size:22px;font-variant-numeric:tabular-nums;color:var(--ink)}
.qc-stem{font-size:26px;line-height:1.45;margin:0;max-width:64ch;color:var(--ink)}
.qc-stem em{font-style:normal;background:var(--mark);border-radius:3px;padding:0 5px}
.qc-opts{display:flex;flex-direction:column;gap:10px}
.qc-opt{display:grid;grid-template-columns:30px minmax(0,1fr);gap:18px;text-align:left;
  padding:14px 20px;border:2px solid var(--rule);border-radius:3px;background:var(--paper);
  cursor:pointer;transition:border-color .3s,background .3s,opacity .3s;font-family:inherit}
.qc-opt:hover{border-color:var(--teal)}
.qcard.revealed .qc-opt{cursor:default}
.qcard.revealed .qc-opt:hover{border-color:var(--rule)}
.qc-opt .l{font-family:var(--f-mono);font-size:22px;color:var(--ink-3)}
.qc-opt .t{font-size:21px;line-height:1.38;color:var(--ink-2)}
.qc-opt.picked{border-color:var(--ink)}
.qc-opt.dead{opacity:.55}
.qc-opt.right{border-color:var(--good);background:var(--good-soft)}
.qc-opt.right .l{color:var(--good)}
.qc-opt .why{grid-column:2;font-family:var(--f-mono);font-size:16px;line-height:1.5;
  color:var(--pencil);max-height:0;overflow:hidden;opacity:0;
  transition:max-height .45s ease,opacity .3s ease,margin-top .45s}
.qc-opt.showwhy .why{max-height:110px;opacity:1;margin-top:9px}
/* measured, not animated: used once to scale the card to the canvas */
.qcard.measuring .why{max-height:110px;opacity:1;margin-top:9px;transition:none}
.qc-opt.right .why{color:var(--good)}
.qc-next{margin-top:26px;font-family:var(--f-mono);font-size:19px;letter-spacing:.06em;
  background:var(--ink);color:var(--plate);border:2px solid var(--ink);border-radius:3px;
  padding:16px 30px;cursor:pointer;align-self:flex-start}
.qc-next:hover{background:var(--teal);border-color:var(--teal)}
.qc-done{text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}
.qc-done .eyebrow{font-size:16px}
.qc-done .sc{font-size:112px;font-weight:700;letter-spacing:-.04em;line-height:1;color:var(--teal)}
.qc-done .sl{font-family:var(--f-mono);font-size:22px;color:var(--ink-2)}
.qc-done .nb{font-size:22px;color:var(--ink-3);max-width:52ch;line-height:1.5;margin-top:10px}

/* mock exam result: the scaled score plus the per-domain breakdown the real report
   gives you. Pass/fail colours the number itself, because that is the one thing a
   candidate looks at first. */
.qc-done .sc.pass{color:var(--good)}
.qc-done .sc.fail{color:var(--pencil)}
.qc-done .sc{font-variant-numeric:tabular-nums}
.qc-done table.dom{border-collapse:collapse;font-family:var(--f-mono);font-size:21px;
  margin-top:4px}
.qc-done table.dom td{padding:5px 20px;border-bottom:1px solid var(--rule-soft);
  text-align:right;font-variant-numeric:tabular-nums}
.qc-done table.dom td:first-child{text-align:left;color:var(--teal);letter-spacing:.05em}
.qc-done table.dom td.w{color:var(--ink-3);font-size:18px}
.qc-done table.dom td.p{font-weight:700}
.qc-done table.dom td.p.good{color:var(--good)}
.qc-done table.dom td.p.mid{color:var(--warn)}
.qc-done table.dom td.p.bad{color:var(--pencil)}
.missing{font-family:var(--f-mono);color:var(--pencil);font-size:22px}

/* ================= the examiner's mark ================= */
/* Fires while a directly-tested concept is being taught, and names the drill
   question it feeds. Lands in the dead space beside the dialogue. */
#examstamp{position:absolute;right:34px;top:854px;width:520px;z-index:7;
  border:2px solid var(--pencil);border-radius:3px;padding:16px 20px;background:var(--plate);
  display:flex;gap:16px;align-items:flex-start;
  opacity:0;transform:translateY(14px) rotate(-.6deg) scale(.97);
  transition:opacity .35s,transform .45s cubic-bezier(.2,.9,.3,1)}
#examstamp.show{opacity:1;transform:translateY(0) rotate(-.6deg) scale(1)}
#examstamp.settled{opacity:.42}
#examstamp .dia{color:var(--pencil);font-size:26px;line-height:1;padding-top:2px}
#examstamp .lab{font-family:var(--f-mono);font-size:13px;letter-spacing:.16em;color:var(--pencil);
  display:block;margin-bottom:5px}
#examstamp .tx{font-size:20px;line-height:1.4;color:var(--ink);display:block}
#examstamp .qn{font-family:var(--f-mono);font-size:15px;color:var(--ink-3);display:block;margin-top:6px}

/* ================= up next (explore-mode auto-advance) ================= */
#upnext{position:absolute;right:34px;bottom:20px;width:360px;z-index:9;
  display:flex;gap:14px;align-items:center;background:var(--plate);
  border:2px solid var(--ink);border-radius:4px;padding:14px 18px;
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .35s,transform .45s cubic-bezier(.2,.9,.3,1)}
#upnext.show{opacity:1;transform:translateY(0);pointer-events:auto}
#upnext .ring{position:relative;width:56px;height:56px;flex:0 0 56px}
#upnext .ring svg{transform:rotate(-90deg)}
#upnext .ring .bg{fill:none;stroke:var(--rule);stroke-width:5}
#upnext .ring .fg{fill:none;stroke:var(--pencil);stroke-width:5;stroke-linecap:round}
#upnext .ring b{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--f-mono);font-size:18px;font-variant-numeric:tabular-nums;color:var(--ink)}
#upnext .bd{flex:1;min-width:0}
#upnext .lab{display:block;font-family:var(--f-mono);font-size:11px;letter-spacing:.15em;color:var(--ink-3)}
#upnext .tt{display:block;font-size:17px;font-weight:600;color:var(--ink);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:2px}
#upnext .cancel{font-family:var(--f-mono);font-size:13px;padding:8px 14px;
  border:2px solid var(--rule);border-radius:3px;background:var(--paper);
  color:var(--ink-2);cursor:pointer}
#upnext .cancel:hover{border-color:var(--teal);color:var(--ink)}

/* ---- narration status ----
   Whether this segment's timings came from real audio or from the estimator.
   Deliberately the quietest thing in the title row: it is a status, not a
   feature — until playback is blocked, when it becomes the way to start. */
#slug .narr{font-family:var(--f-mono);font-size:16px;color:var(--ink-3);
  border:1px solid var(--rule);border-radius:3px;padding:4px 11px;opacity:.55;
  white-space:nowrap;letter-spacing:.04em;transition:opacity .25s,color .25s,border-color .25s}
#slug .narr:empty{display:none}
#slug .narr.on{color:var(--teal);border-color:var(--teal);opacity:.8}
#slug .narr.blocked{color:var(--pencil);border-color:var(--pencil);opacity:1;
  background:var(--pencil-soft);cursor:pointer}

/* drill: link back to where it was taught */
.qc-taught{font-family:var(--f-mono);font-size:14px;color:var(--pencil);background:none;
  border:1px solid var(--pencil);border-radius:2px;padding:5px 11px;cursor:pointer;
  letter-spacing:.04em}
.qc-taught:hover{background:var(--pencil);color:var(--plate)}
.examlink{cursor:pointer}

/* ===== primitives: cards, gates, trees =====
   HubSpoke / Gate / SessionTree / Decompose each draw every state in one frame and
   show or hide whole groups, rather than re-lighting a single fixed diagram. So the
   vocabulary is small: .hid removes a group, .on lights it, .bad marks it as the
   anti-pattern, .dim pushes it back. All colour comes from tokens — the SVG is
   theme-agnostic and carries no literal hex. */
.prim .hid{opacity:0;pointer-events:none;transition:opacity .35s}
.prim g,.prim path,.prim text{transition:opacity .35s,stroke .25s,fill .25s}

.prim .card rect{fill:var(--plate);stroke:var(--rule);stroke-width:2}
.prim .card.on rect{stroke:var(--teal);stroke-width:3}
.prim .card.bad rect{stroke:var(--pencil);stroke-width:3;fill:var(--pencil-soft)}
.prim .card.dim{opacity:.34}
.prim .hd{font-family:var(--f-mono);font-size:14px;letter-spacing:.14em;fill:var(--ink-3);
  text-anchor:start}
.prim .ln{font-family:var(--f-mono);font-size:19px;fill:var(--ink-2);text-anchor:start}
.prim .ln.good{fill:var(--good)}
.prim .ln.bad{fill:var(--pencil)}
.prim .ln.dim{fill:var(--ink-3);opacity:.6}
/* .ln.dim's opacity:.6 was tuned against the default light theme's --ink-3; darkening
   --ink-3 for the hc theme still left this specific style washed out, because the fade
   was applied on top rather than instead of the color change. hc drops the extra fade —
   the color alone (ink-3 vs ink-2) still reads as secondary, just no longer illegible. */
:root[data-theme="hc"] .prim .ln.dim{opacity:1}
.prim .sm{font-size:15px}
.prim text.sub.good{fill:var(--good)}
.prim text.sub.bad{fill:var(--pencil)}

/* arrowheads live inside <marker>, where currentColor would resolve against the
   marker's own ancestors rather than the referencing path — so they get a class
   and a real token fill, and setState swaps which marker is referenced. */
.prim .ahd{fill:var(--rule)}
.prim .ahd.on{fill:var(--teal)}
.prim .ahd.bad{fill:var(--pencil)}

.prim .ed.dash{stroke-dasharray:11 9}
.prim .ed.bad{stroke:var(--pencil);stroke-width:3.4}
.prim .nd.bad rect{stroke:var(--pencil);stroke-width:3.4;fill:var(--pencil-soft)}
.prim .nd.ghost rect{stroke:var(--rule);stroke-dasharray:7 7;fill:none}
.prim .nd.ghost text{fill:var(--ink-3)}
.prim .el.bad{fill:var(--pencil)}
.prim .el.good{fill:var(--good)}

/* attention thinning across one oversized context: the bars carry their own
   per-bar opacity inline, so the class only supplies the ink */
.prim .blobline{fill:var(--teal)}
.prim .card.bad .blobline{fill:var(--pencil)}

/* stale tool results: hatched rather than recoloured, because the point is that
   they still look like valid content */
.prim .hx{stroke:var(--pencil);stroke-width:1.6;opacity:.55}

/* ================= the held-out assessment ================= */
/* engine/assessment.js. Sized for the same 1920x1080 stage as everything else, and
   built to be read at 360p: nothing here is smaller than 18px, and every state is
   carried by a border or a background as well as by colour, so a red/green pair is
   never the only signal (Phase 6.5).

   Deliberately plainer than the drill card. A drill is a piece of teaching and looks
   like one; an assessment should look like a form, because that is what it is. */
.asx{position:absolute;inset:0;display:flex;flex-direction:column;gap:18px;
  font-size:22px;line-height:1.45;overflow:auto}
.asx .eyebrow{font-family:var(--f-mono);font-size:16px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3)}
.asx h2{font-size:40px;line-height:1.15;letter-spacing:-.02em;margin:0}
.asx h3{font-size:28px;margin:0 0 10px}

.asx-start{max-width:1180px;padding-right:20px}
.asx-policy{margin:6px 0 0;padding-left:28px;display:flex;flex-direction:column;gap:9px;
  color:var(--ink-2)}
.asx-policy strong{color:var(--ink)}
.asx-warn{border-left:4px solid var(--warn);background:var(--plate);
  padding:12px 18px;color:var(--ink-2);margin:4px 0}
.asx-note{border-left:4px solid var(--teal);background:var(--plate);
  padding:12px 18px;color:var(--ink-2);margin:4px 0}
.asx-fine{font-size:19px;color:var(--ink-3);max-width:90ch;margin:2px 0 0}
.asx-hist{margin-top:10px;font-family:var(--f-mono);font-size:18px;color:var(--ink-2)}
.asx-hist .hd{font-size:15px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-3);margin-bottom:6px}
.asx-hist .row{display:flex;gap:26px;padding:3px 0;
  border-bottom:1px solid var(--rule-soft)}

.asx-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.asx-btn{font-family:var(--f-disp);font-size:21px;padding:12px 22px;border-radius:3px;
  border:2px solid var(--rule);background:var(--plate);color:var(--ink);cursor:pointer}
.asx-btn:hover:not(:disabled){border-color:var(--ink-2)}
.asx-btn:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
.asx-btn.primary{background:var(--ink);color:var(--plate);border-color:var(--ink)}
.asx-btn:disabled{opacity:.45;cursor:default}

/* ---- the paper ---- */
.asx-bar{display:flex;align-items:baseline;gap:28px;font-family:var(--f-mono);
  font-size:18px;color:var(--ink-3);border-bottom:1px solid var(--rule);
  padding-bottom:10px;flex-wrap:wrap}
.asx-bar b{color:var(--ink);font-weight:700}
.asx-pos{color:var(--ink-2)}
.asx-counts{flex:1}
.asx-clock{font-size:30px;color:var(--ink);font-variant-numeric:tabular-nums;
  border:2px solid var(--rule);border-radius:3px;padding:2px 12px}
.asx-clock.off{font-size:18px;color:var(--ink-3);border-style:dashed}
/* Running low is a border change AND a colour change: colour alone would be the
   only signal for a viewer who cannot distinguish it. */
.asx-clock.low{color:var(--pencil);border-color:var(--pencil);border-width:3px}

.asx-q{flex:1 0 auto;display:flex;flex-direction:column;gap:16px}
.asx-stem{font-size:26px;line-height:1.4;max-width:100ch}
.asx-stem code{font-family:var(--f-mono);font-size:.9em;background:var(--plate);
  padding:1px 5px;border-radius:2px}
.asx-opts{display:flex;flex-direction:column;gap:10px;max-width:118ch}
.asx-opt{display:flex;gap:16px;align-items:flex-start;text-align:left;
  font-family:var(--f-disp);font-size:22px;line-height:1.35;padding:14px 18px;
  border:2px solid var(--rule);border-radius:3px;background:var(--plate);
  color:var(--ink);cursor:pointer}
.asx-opt:hover{border-color:var(--ink-2)}
.asx-opt:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
/* A chosen option is marked three ways — border weight, background, and a filled
   letter chip — so it never depends on hue alone. */
.asx-opt.on{border-color:var(--ink);border-width:3px;background:var(--paper)}
.asx-opt .k{font-family:var(--f-mono);font-size:19px;color:var(--ink-3);
  border:1px solid var(--rule);border-radius:2px;padding:1px 8px;flex:none}
.asx-opt.on .k{background:var(--ink);color:var(--plate);border-color:var(--ink)}

.asx-foot{display:flex;gap:12px;flex-wrap:wrap;padding-top:10px;
  border-top:1px solid var(--rule)}
.asx-nav{display:flex;gap:6px;flex-wrap:wrap;padding-top:4px}
.asx-cell{font-family:var(--f-mono);font-size:17px;width:44px;height:38px;
  border:2px solid var(--rule);border-radius:2px;background:var(--plate);
  color:var(--ink-3);cursor:pointer;font-variant-numeric:tabular-nums}
.asx-cell:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
/* answered = filled; flagged = a star glyph, not just a colour; current = ring */
.asx-cell.done{background:var(--ink);color:var(--plate);border-color:var(--ink)}
.asx-cell.flag{border-color:var(--warn);border-width:3px}
.asx-cell.flag::after{content:'\2605';font-size:11px;vertical-align:super;color:var(--warn)}
.asx-cell.done.flag::after{color:var(--mark)}
.asx-cell.here{outline:3px solid var(--teal);outline-offset:2px}

/* ---- submit confirmation ---- */
.asx-modal{position:absolute;inset:0;background:rgba(0,0,0,.42);display:flex;
  align-items:center;justify-content:center;z-index:20}
.asx-modal .box{background:var(--plate);border:2px solid var(--ink);border-radius:4px;
  padding:30px 34px;max-width:820px;display:flex;flex-direction:column;gap:14px}
.asx-modal .jump{display:flex;gap:6px;flex-wrap:wrap}
.asx-modal .jump button{font-family:var(--f-mono);font-size:17px;padding:4px 10px;
  border:2px solid var(--warn);border-radius:2px;background:var(--plate);
  color:var(--ink);cursor:pointer}

/* ---- result ---- */
.asx-result{max-width:1180px}
.asx-result .sc{font-size:104px;font-weight:700;letter-spacing:-.04em;line-height:1;
  color:var(--teal);font-variant-numeric:tabular-nums}
.asx-result .sl{font-family:var(--f-mono);font-size:22px;color:var(--ink-2)}
.asx-result table.dom{border-collapse:collapse;font-family:var(--f-mono);font-size:21px}
.asx-result table.dom td{padding:5px 20px;border-bottom:1px solid var(--rule-soft);
  text-align:right;font-variant-numeric:tabular-nums}
.asx-result table.dom td:first-child{text-align:left;color:var(--teal);letter-spacing:.05em}
.asx-result table.dom td.w{color:var(--ink-3);font-size:18px}
.asx-result table.dom td.p{font-weight:700}
.asx-result table.dom td.p.good{color:var(--good)}
.asx-result table.dom td.p.mid{color:var(--warn)}
.asx-result table.dom td.p.bad{color:var(--pencil)}
.asx-result .nb{font-size:21px;color:var(--ink-3);max-width:96ch;line-height:1.5}
.asx-answers{display:flex;flex-direction:column;gap:16px;margin-top:10px}
.asx-ans{border:1px solid var(--rule);border-radius:3px;padding:16px 20px;
  background:var(--plate);font-size:20px;line-height:1.4}
.asx-ans .hd{font-family:var(--f-mono);font-size:16px;letter-spacing:.1em;
  color:var(--ink-3);text-transform:uppercase}
.asx-ans .stem{margin:6px 0 10px;color:var(--ink-2)}
.asx-ans .row{display:flex;gap:14px;padding:4px 0}
.asx-ans .row span:first-child{font-family:var(--f-mono);font-size:16px;
  color:var(--ink-3);flex:none;width:14ch;text-transform:uppercase;letter-spacing:.08em}
/* The label carries the meaning; the colour only reinforces it. */
.asx-ans .row.good span:last-child{color:var(--good)}
.asx-ans .row.bad span:last-child{color:var(--pencil)}
.asx-ans .why{font-size:19px;color:var(--ink-3);margin-top:6px;padding-left:2px;
  border-left:3px solid var(--good);padding-left:12px}
.asx-ans .why.bad{border-left-color:var(--pencil)}
.asx-ans .reason{font-size:19px;color:var(--ink-2);margin-top:10px;
  border-top:1px solid var(--rule-soft);padding-top:10px}

@media (prefers-reduced-motion: reduce){
  .asx *{transition:none!important;animation:none!important}
}