/* The work-mode replica (work-replica.js), the practical exam (practice-exam.js) and the cursor quiz (cursor-quiz.js).
   The replica is an app inside the page, so it keeps its own tokens; the overlays reuse the host's .sq-* styles
   (stumper-quiz.css in the course, quiz.css on the landing page) and add only their layout here. */
.wr { --wr-bg: #fbfaf7; --wr-panel: #fff; --wr-ink: #1d1c1a; --wr-muted: #67625b; --wr-line: #e2ddd4; --wr-soft: #f1eee8; --wr-accent: #2f6fe4; --wr-you: #ece8e1; --wr-warn: #b23a35;
  position: relative; display: flex; flex-direction: column; height: 100%; min-height: 0; overflow: hidden; border-radius: 16px;
  background: var(--wr-bg); color: var(--wr-ink); box-shadow: inset 0 0 0 1px var(--wr-line); font: 400 14px/1.45 var(--sans, system-ui, sans-serif); text-align: left; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .wr { --wr-bg: #18181a; --wr-panel: #222225; --wr-ink: #f1efe9; --wr-muted: #aaa59d; --wr-line: #38383c; --wr-soft: #2b2b2f; --wr-accent: #82adff; --wr-you: #2f2f33; --wr-warn: #f08a84; } }
:root[data-theme="dark"] .wr { --wr-bg: #18181a; --wr-panel: #222225; --wr-ink: #f1efe9; --wr-muted: #aaa59d; --wr-line: #38383c; --wr-soft: #2b2b2f; --wr-accent: #82adff; --wr-you: #2f2f33; --wr-warn: #f08a84; }
.wr p { margin: 0; }
.wr [hidden] { display: none !important; }
.wr-top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--wr-line); }
.wr-body { flex: 1; min-height: 0; display: grid; grid-template-columns: 188px minmax(0, 1fr) 300px; grid-template-areas: "rail main insp"; }
.wr-rail { grid-area: rail; overflow: auto; padding: 10px 8px; border-right: 1px solid var(--wr-line); }
.wr-main { grid-area: main; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.wr-insp { grid-area: insp; display: flex; flex-direction: column; min-height: 0; border-left: 1px solid var(--wr-line); background: var(--wr-panel); }
.wr-log { flex: 1; min-height: 0; overflow: auto; padding: 14px; }
.wr-composer { border-top: 1px solid var(--wr-line); padding: 10px 12px 12px; }
.wr-grow { flex: 1 1 0; }
.wr-vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* controls: one height, one shape; every one shows hover at once */
.wr-b { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 36px; padding: 6px 12px; border: 0; border-radius: 10px;
  background: var(--wr-soft); color: var(--wr-ink); font: 500 14px/1.2 var(--sans, system-ui, sans-serif); cursor: pointer; }
.wr-b:hover:not(:disabled) { box-shadow: inset 0 0 0 1.5px var(--wr-ink); }
.wr-b:disabled { opacity: .45; cursor: default; }
.wr-b.is-primary { background: var(--wr-ink); color: var(--wr-bg); padding: 6px 18px; }
.wr-b:focus-visible, .wr select:focus-visible, .wr input:focus-visible, .wr textarea:focus-visible { outline: 2px solid var(--wr-accent); outline-offset: 2px; }
.wr-seg { display: inline-flex; gap: 2px; padding: 3px; border-radius: 12px; background: var(--wr-soft); }
.wr-seg .wr-b { min-height: 30px; background: transparent; color: var(--wr-muted); }
.wr-seg .wr-b[aria-pressed="true"] { background: var(--wr-panel); color: var(--wr-ink); font-weight: 600; box-shadow: 0 1px 2px rgb(0 0 0 / .14), inset 0 0 0 1px var(--wr-line); }
.wr-field { display: inline-flex; align-items: center; gap: 6px; }
.wr-field > span { font-size: 12px; color: var(--wr-muted); }
.wr-field select, .wr-angle { min-height: 36px; border: 0; border-radius: 10px; padding: 0 10px; background: var(--wr-panel); color: var(--wr-ink); box-shadow: inset 0 0 0 1.5px var(--wr-line); font: 500 14px/1.2 var(--sans, system-ui, sans-serif); }
.wr-field select:hover:not(:disabled), .wr-angle:hover { box-shadow: inset 0 0 0 1.5px var(--wr-ink); }
.wr-field select:disabled { opacity: .45; }
.wr-tog .wr-sw { position: relative; display: inline-block; width: 28px; height: 16px; border-radius: 8px; background: var(--wr-line); }
.wr-tog .wr-sw::after { content: ""; position: absolute; left: 2px; top: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--wr-panel); box-shadow: 0 1px 2px rgb(0 0 0 / .3); transition: left .15s; }
.wr-tog[aria-pressed="true"] { font-weight: 600; }
.wr-tog[aria-pressed="true"] .wr-sw { background: var(--wr-accent); }
.wr-tog[aria-pressed="true"] .wr-sw::after { left: 14px; }
.wr-acct { gap: 8px; background: transparent; box-shadow: inset 0 0 0 1.5px var(--wr-line); }
.wr-acct.is-personal { box-shadow: inset 0 0 0 1.5px var(--wr-line); border: 1.5px dashed var(--wr-muted); }
.wr-acct-dot { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--wr-ink); color: var(--wr-bg); font-size: 11px; font-weight: 700; }

/* the rail: new chat, the project with its files, chats */
.wr-row { display: flex; width: 100%; justify-content: flex-start; gap: 8px; margin-bottom: 2px; background: transparent; text-align: left; }
.wr-row[aria-pressed="true"] { background: var(--wr-soft); font-weight: 600; box-shadow: inset 3px 0 0 var(--wr-ink); }
.wr-row-t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wr-count { margin-left: auto; font-size: 12px; color: var(--wr-muted); font-weight: 500; }
.wr-rail-h { margin: 14px 6px 4px; font-size: 12px; font-weight: 600; color: var(--wr-muted); }
.wr-pj { flex: none; width: 14px; height: 11px; border: 1.5px solid currentColor; border-radius: 3px; }
.wr-files { list-style: none; margin: 2px 0 8px 30px; padding: 0; font-size: 12px; color: var(--wr-muted); }

/* the thread */
.wr-msg { max-width: 92%; margin: 0 0 10px; padding: 10px 12px; border-radius: 14px; background: var(--wr-panel); box-shadow: inset 0 0 0 1px var(--wr-line); }
.wr-msg.is-you { margin-left: auto; max-width: 80%; background: var(--wr-you); box-shadow: none; }
.wr-msg.is-helper { box-shadow: inset 0 0 0 1px var(--wr-line), inset 3px 0 0 var(--wr-accent); }
.wr-msg.is-sys { max-width: 100%; padding: 2px 0 6px; background: transparent; box-shadow: none; color: var(--wr-muted); font-size: 13px; }
.wr-msg.is-busy { display: inline-flex; align-items: center; gap: 8px; color: var(--wr-muted); }
.wr-who { margin-bottom: 4px !important; font-size: 12px; font-weight: 600; color: var(--wr-muted); }
.wr-who span { font-weight: 500; }
.wr-lines { margin: 6px 0 0; padding-left: 18px; }
.wr-lines li { margin: 2px 0; }
.wr-cites, .wr-acts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px !important; }
.wr-cite { min-height: 28px; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.wr-mini { min-height: 30px; font-size: 13px; }
.wr-file { display: inline-block; margin: 0 0 6px !important; padding: 4px 10px; border-radius: 8px; background: var(--wr-soft); font-size: 13px; }
.wr-dots { display: inline-flex; gap: 3px; }
.wr-dots i { width: 5px; height: 5px; border-radius: 50%; background: currentColor; animation: wr-dot 1s infinite ease-in-out; }
.wr-dots i:nth-child(2) { animation-delay: .15s; } .wr-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes wr-dot { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }

/* the composer */
.wr-input { display: block; width: 100%; box-sizing: border-box; resize: none; border: 0; border-radius: 12px; padding: 10px 12px; background: var(--wr-panel); color: var(--wr-ink); box-shadow: inset 0 0 0 1.5px var(--wr-line); font: 400 15px/1.45 var(--sans, system-ui, sans-serif); }
.wr-input:focus { outline: none; box-shadow: inset 0 0 0 2px var(--wr-accent); }
.wr-file.is-pending { margin-top: 8px !important; }
.wr-runrow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.wr-step { display: inline-flex; align-items: center; gap: 4px; }
.wr-step b { min-width: 28px; text-align: center; font-weight: 600; }
.wr-step .wr-b { width: 36px; padding: 0; }
.wr-angles { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 6px; margin-top: 8px; }
.wr-angle { width: 100%; box-sizing: border-box; font-weight: 400; }

/* the inspector: reasoning, sources, helpers */
.wr-tabs { display: flex; gap: 4px; padding: 8px; border-bottom: 1px solid var(--wr-line); }
.wr-tabs .wr-b { flex: 1; min-height: 32px; padding: 4px 6px; background: transparent; color: var(--wr-muted); font-size: 13px; }
.wr-tabs .wr-b[aria-selected="true"] { color: var(--wr-ink); font-weight: 600; box-shadow: inset 0 -2px 0 var(--wr-ink); border-radius: 6px 6px 0 0; }
.wr-pane { flex: 1; min-height: 0; overflow: auto; padding: 10px 12px; }
.wr-empty { color: var(--wr-muted); font-size: 13px; }
.wr-trace { margin-bottom: 12px; }
.wr-trace-h { font-weight: 600; }
.wr-trace ol { margin: 4px 0 0; padding-left: 18px; }
.wr-src, .wr-helper { margin-bottom: 8px; padding: 10px; border-radius: 12px; box-shadow: inset 0 0 0 1px var(--wr-line); }
.wr-src.is-flagged { box-shadow: inset 0 0 0 2px var(--wr-warn); }
.wr-src-h { font-size: 13px; }
.wr-tag { font-size: 12px; font-weight: 600; color: var(--wr-warn); white-space: nowrap; }
.wr-url, .wr-meta { margin: 2px 0 !important; font-size: 12px; color: var(--wr-muted); word-break: break-word; }
.wr-claim { margin-top: 4px !important; font-size: 13px; }
.wr-badge { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--wr-soft); font-size: 12px; font-weight: 600; }
.wr-page { margin: 10px 0; padding: 12px; border-radius: 12px; background: var(--wr-bg); box-shadow: inset 0 0 0 1px var(--wr-line); }
.wr-page h4 { margin: 4px 0; font-size: 15px; }
.wr-page p + p { margin-top: 8px; }
.wr-flag[aria-pressed="true"] { box-shadow: inset 0 0 0 2px var(--wr-warn); }

/* a dialog inside the app (an agent asking for permissions) */
.wr-dialog { position: absolute; z-index: 5; right: 16px; bottom: 110px; width: 320px; max-width: calc(100% - 32px); box-sizing: border-box; padding: 12px 14px; border-radius: 14px; background: var(--wr-panel); box-shadow: 0 12px 32px rgb(0 0 0 / .22), inset 0 0 0 1px var(--wr-line); }

/* the ring round the control that matters, with one label on its corner */
.wr-ringbox { position: absolute; z-index: 6; display: none; border-radius: 12px; box-shadow: 0 0 0 2px var(--wr-accent); pointer-events: none; }
.wr-ringbox::after { content: attr(data-label); position: absolute; top: -11px; right: -8px; padding: 2px 7px; border-radius: 999px; background: var(--wr-accent); color: #fff; font: 600 11px/1.3 var(--sans, system-ui, sans-serif); }
.wr-ringbox[data-label=""]::after { display: none; }
.wr-ringbox.is-low::after { top: auto; bottom: -11px; }

/* the magic cursor: the course's arrow and its blob (quarry/interface cursor-character.css) */
.wr-cursor, .wr-cblob { position: absolute; left: 0; top: 0; pointer-events: none; transition-property: transform; }
.wr-cursor { z-index: 8; transition-timing-function: cubic-bezier(.3, .7, .2, 1); }
.wr-cblob { z-index: 7; transition-timing-function: cubic-bezier(.25, .9, .3, 1.15); }
.wr-cursor svg { display: block; overflow: visible; transform: translate(-3px, -2.5px) rotate(-4deg); transform-origin: 3px 2.5px; transition: transform .12s; filter: drop-shadow(0 2px 3px rgb(0 0 0 / .25)); }
.wr-cursor path { fill: #1d1c1a; stroke: #fff; stroke-width: 1.6; stroke-linejoin: round; }
.wr-cursor.is-press svg { transform: translate(-3px, -2.5px) rotate(-4deg) scale(.82); }
.wr-cblob svg { display: block; overflow: visible; transition: transform .16s; filter: drop-shadow(0 2px 3px rgb(0 0 0 / .2)); }
.wr-cblob path { fill: #d97757; }
.wr-cblob ellipse { fill: #271c17; }
.wr-cblob.is-press svg { transform: scale(1.12, .86); }
.wr.is-shield .wr-top, .wr.is-shield .wr-body { pointer-events: none; }

@media (max-width: 960px) {
  .wr-body { grid-template-columns: minmax(0, 1fr) 260px; grid-template-areas: "rail rail" "main insp"; grid-template-rows: auto minmax(0, 1fr); }
  .wr-rail { display: flex; flex-wrap: wrap; gap: 4px; padding: 6px 8px; border-right: 0; border-bottom: 1px solid var(--wr-line); }
  .wr-rail .wr-row { width: auto; margin: 0; }
  .wr-rail-h, .wr-files { display: none; }
}
@media (max-width: 640px) {
  .wr { height: auto; }
  .wr-body { grid-template-columns: minmax(0, 1fr); grid-template-areas: "rail" "main" "insp"; grid-template-rows: auto auto auto; }
  .wr-log { min-height: 260px; max-height: 55vh; }
  .wr-insp { border-left: 0; border-top: 1px solid var(--wr-line); }
  .wr-pane { max-height: 50vh; }
  .wr-field > span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .wr-cursor, .wr-cblob, .wr-cursor svg, .wr-cblob svg, .wr-tog .wr-sw::after { transition: none !important; }
  .wr-dots i { animation: none; opacity: .7; }
}

/* the practical exam's overlay */
.sq.px { padding: 16px; align-items: flex-start; }
.px-panel { width: 100%; max-width: 1280px; box-sizing: border-box; display: flex; flex-direction: column; gap: 10px; padding: 14px 16px 16px; border-radius: 22px; background: var(--card, #fff); box-shadow: var(--edge, 0 1px 3px rgb(0 0 0 / .2)); animation: sq-in .22s ease-out; }
.px.is-live .px-panel { height: calc(100vh - 32px); }
.px:not(.is-live) .px-panel { max-width: 760px; }
.px-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.px-title { font: 600 15px/1.2 var(--sans, system-ui, sans-serif); }
.px-tabs { flex: 1 1 0; display: flex; gap: 6px; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.px-tab { flex: none; min-height: 40px; padding: 8px 14px; border: 0; border-radius: 999px; background: transparent; color: var(--ink, #353538); box-shadow: inset 0 0 0 1.5px var(--line, #dedad3); font: 500 14px/1.2 var(--sans, system-ui, sans-serif); cursor: pointer; }
.px-tab:hover { box-shadow: inset 0 0 0 1.5px var(--ink, #353538); }
.px-tab[aria-selected="true"] { box-shadow: inset 0 0 0 2px var(--ink, #353538); font-weight: 600; }
.px-tools { display: flex; gap: 8px; }
.px-tools button { min-height: 40px; padding: 8px 16px; font-size: 15px; }
.px-stage { position: relative; flex: 1; min-height: 0; }
.px:not(.is-live) .px-stage { display: none; }
.px.is-live .px-body:empty { display: none; }
.px-intro .sq-q { margin-top: 10px; }
.px-tasks { display: grid; gap: 14px; margin: 0 0 8px; padding-left: 22px; font-size: 17px; line-height: 1.45; }
.px-tasks b { display: block; }
.px-sheet { position: absolute; inset: 0; z-index: 9; display: grid; gap: 14px; align-content: start; overflow: auto; padding: 20px; border-radius: 16px; background: var(--card, #fff); box-shadow: inset 0 0 0 1px var(--line, #dedad3); }
.px-sheet > label { display: grid; gap: 6px; font-size: 14px; color: var(--muted, #69676e); }
.px-h { margin: 0; font: 600 22px/1.25 var(--sans, system-ui, sans-serif); }
.px-sheet .sq-answer { min-height: 0; }
.px-cites { display: grid; gap: 8px; margin: 0; padding: 0; border: 0; }
.px-cites legend { margin-bottom: 6px; font-size: 14px; color: var(--muted, #69676e); }
.px-check { display: flex; align-items: center; gap: 10px; min-height: 32px; font-size: 15px; color: var(--ink, #353538); cursor: pointer; }
.px-check input { width: 20px; height: 20px; margin: 0; }
.px-bubble { position: absolute; z-index: 9; width: 280px; max-width: calc(100% - 16px); box-sizing: border-box; padding: 12px 14px; border-radius: 14px; background: #1d1c1a; color: #fff; box-shadow: 0 12px 32px rgb(0 0 0 / .3); }
.px-say { margin: 0 0 10px; font-size: 15px; line-height: 1.4; }
.px-brow { display: flex; justify-content: flex-end; gap: 8px; }
.px-bubble .sq-next, .px-bubble .sq-alt { min-height: 36px; padding: 6px 16px; font-size: 14px; }
.px-bubble .sq-next { background: #fff; color: #1d1c1a; }
.px-bubble .sq-alt { color: #fff; box-shadow: inset 0 0 0 1.5px rgb(255 255 255 / .45); }
.px-report { display: grid; gap: 10px; margin: 18px 0 0; padding: 0; list-style: none; }
.px-pat { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 12px; align-items: start; padding: 12px 14px; border-radius: 14px; box-shadow: inset 0 0 0 1.5px var(--line, #dedad3); }
.px-pat .sq-verdict { display: inline-flex; gap: 6px; align-items: center; margin: 0; font: 600 14px/1.3 var(--sans, system-ui, sans-serif); }
.px-pat .sq-pt { margin: 0; font-weight: 600; }
.px-pat .sq-why { margin: 2px 0 0; color: var(--ink, #353538); }
.px-pat .sq-learn { margin-top: 4px; font-size: 14px; }
.px-pat.is-correct { box-shadow: inset 0 0 0 2px var(--sq-ok, #2e7d5b); }
.px-pat.is-incorrect { box-shadow: inset 0 0 0 1.5px var(--line, #dedad3), inset 4px 0 0 var(--sq-no, #b23a35); }
.px-report.is-locked .px-pat { opacity: .55; }
@media (max-width: 640px) {
  .sq.px { padding: 0; }
  .px-panel, .px.is-live .px-panel { height: auto; min-height: 100%; border-radius: 0; padding: 12px; }
  .px-pat { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .px-tools { width: 100%; } .px-tools button { flex: 1; }
}
@media (prefers-reduced-motion: reduce) { .px-panel { animation: none; } }

/* the cursor quiz */
.cq-panel { max-width: 1000px; }
.cq-task { margin: 18px 0 10px; font: 600 18px/1.35 var(--sans, system-ui, sans-serif); }
.cq-stage { position: relative; height: 470px; }
.cq-cap { min-height: 24px; margin: 10px 0 0; font-size: 16px; color: var(--ink, #353538); }
.cq-verdict { margin: 0 0 8px; font: 600 20px/1.2 var(--sans, system-ui, sans-serif); }
.cq-why { margin: 0 0 10px; font-size: 17px; line-height: 1.45; }
.cq-voice { min-height: 36px !important; padding: 6px 14px !important; font-size: 14px !important; white-space: nowrap; }
.cq-voice[aria-pressed="true"] { box-shadow: inset 0 0 0 2px var(--ink, #353538); font-weight: 600; }
.cq-ask { margin-top: 6px; }
.cq .wr-insp { display: none; }
.cq .wr-body { grid-template-columns: 170px minmax(0, 1fr); grid-template-areas: "rail main"; }
.cq.has-insp .wr-insp { display: flex; }
@media (max-width: 960px) { .cq .wr-body { grid-template-columns: minmax(0, 1fr); grid-template-areas: "rail" "main"; grid-template-rows: auto minmax(0, 1fr); } }
@media (max-width: 640px) { .cq-stage { height: 520px; } .cq .wr { height: 100%; } .cq .wr-log { max-height: none; } .cq-voice { order: 3; } }
/* the entries at the end of each lesson, beside the stumpers */
.endcard .ec .cq-entry, .endcard .ec .px-entry { display: block; margin: 0 auto 16px; }

/* the practical exam in the React replica (exam-frame.js): the page fills a frame inset like the panel above */
.sq.xf { padding: 16px; align-items: stretch; }
.xf-frame { flex: 1; width: 100%; max-width: 1280px; margin: 0 auto; border: 0; border-radius: 22px; background: transparent; box-shadow: var(--edge, 0 1px 3px rgb(0 0 0 / .2)); opacity: 0; transition: opacity .18s ease-out; }
.xf.is-ready .xf-frame { opacity: 1; }
@media (max-width: 720px) { .sq.xf { padding: 0; } .xf-frame { border-radius: 0; } }
@media (prefers-reduced-motion: reduce) { .xf-frame { transition: none; } }