/* Exam player (/exam/): focus bar, start screen, question card, navigator, PBQ editors,
   review screen and results. Builds on site.css and uses only its tokens. */

.exam-page { min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; background: var(--bg); }
.exam-main { flex: 1; }
.exam-main:focus { outline: none; }
.ex-wrap { width: min(100% - 2 * var(--gutter), 1320px); margin-inline: auto; padding-block: clamp(20px, 3vw, 36px) clamp(48px, 6vw, 80px); }
.loading { color: var(--ink-3); font-size: var(--text-ui); }
.icon.flip { transform: rotate(180deg); }
.icon.flip-x { transform: scaleX(-1); }
.exam-page input, .exam-page button { font-family: inherit; }

/* ============================ Focus bar ============================ */
.focusbar {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  -webkit-backdrop-filter: saturate(1.5) blur(14px); backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid var(--line);
}
.focusbar-inner { display: flex; align-items: center; gap: 10px; min-height: 64px; width: min(100% - 2 * var(--gutter), 1320px); margin-inline: auto; }
.fb-brand { display: inline-flex; align-items: center; gap: 10px; flex: none; color: var(--ink); text-decoration: none; border-radius: 10px; }
.fb-brand:hover { color: var(--ink); }
.fb-brand .brand-mark { width: 32px; height: 32px; }
.fb-brand .brand-name { display: none; }
.fb-title {
  flex: 1; min-width: 0; margin: 0; padding-left: 10px; border-left: 1px solid var(--line-strong);
  font: 700 var(--text-ui)/1.3 var(--font-display); letter-spacing: -.01em; color: var(--ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.fb-timer {
  display: inline-flex; align-items: center; gap: 6px; flex: none; min-height: 44px; padding: 0 12px; border-radius: 12px;
  border: 1.5px solid var(--line-strong); background: var(--surface); color: var(--ink);
  font: 600 var(--text-ui)/1 var(--font-mono); font-variant-numeric: tabular-nums;
}
.fb-timer[hidden] { display: none; }
.fb-timer .icon { width: 1.1rem; height: 1.1rem; color: var(--ink-3); }
.fb-timer.is-low { border-color: var(--coral); background: var(--coral-soft); color: var(--coral-ink); }
.fb-timer.is-low .icon { color: var(--coral-ink); }
.fb-exit { flex: none; padding-inline: 14px; }
.fb-progress { height: 3px; background: var(--surface-2); }
.fb-progress i { display: block; height: 100%; width: 0; background: var(--brand); border-radius: 0 3px 3px 0; transition: width .3s ease; }
@media (min-width: 720px) {
  .fb-brand .brand-name { display: inline; font-family: var(--font-display); font-weight: 800; font-size: var(--text-title); letter-spacing: -.03em; }
  .fb-title { padding-left: 14px; margin-left: 4px; }
}
@media (max-width: 419px) {
  .focusbar .theme-toggle { display: none; }
  .fb-timer { padding: 0 9px; }
  .fb-exit { padding-inline: 12px; }
}

/* ============================ Shared bits ============================ */
.lead { margin: 0 0 1rem; }
.notice {
  display: flex; gap: 10px; align-items: flex-start; margin: 0 0 18px; padding: 12px 16px; border-radius: 14px;
  background: var(--brand-soft); color: var(--ink); font-size: var(--text-ui); line-height: 1.55;
}
.notice .icon { color: var(--brand); margin-top: 3px; }
.ex-card {
  min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-l);
  box-shadow: var(--shadow-1); padding: clamp(16px, 3vw, 32px);
}
.ex-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 22px; }
.ex-actions .btn:last-child { margin-left: auto; }
.btn[disabled] { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.muted-line { margin: 0; color: var(--ink-3); font-size: var(--text-ui); }
.scroll-x { overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; }
.scroll-x:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* ============================ Start, locked, missing ============================ */
.start-card {
  max-width: 820px; margin: 0 auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  box-shadow: var(--shadow-2); padding: clamp(20px, 4vw, 48px);
}
.start-card h1 { font-size: var(--step-3); margin-bottom: .35em; }
.start-card h1:focus { outline: none; }
.start-card .lead { color: var(--ink-2); }
.info-card { text-align: left; }
.info-card .lead + .lead { font-size: var(--step-0); }
.facts { list-style: none; margin: 0 0 22px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.facts li {
  font-family: var(--font-mono); font-size: var(--text-mono); line-height: 1.3; padding: .45rem .8rem; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-2);
}
.facts b { color: var(--ink); font-weight: 600; }
.resume { margin: 0 0 22px; padding: 18px 20px; border-radius: var(--r); border: 2px solid var(--brand); background: var(--brand-soft); }
.resume h2 { font-size: var(--text-title); margin: 0 0 .2rem; }
.resume p { margin: 0; color: var(--ink-2); font-size: var(--text-ui); }
.resume .start-actions { margin-top: 14px; }
.start-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 24px; }
.modes { border: 0; margin: 8px 0 0; padding: 0; display: grid; gap: 12px; }
@media (min-width: 640px) { .modes { grid-template-columns: 1fr 1fr; } }
.modes legend { padding: 0; margin-bottom: 10px; font: 700 var(--text-title)/1.3 var(--font-display); color: var(--ink); }
.mode-card {
  position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 12px; align-items: start; cursor: pointer;
  padding: 16px; border-radius: var(--r); border: 2px solid var(--line-strong); background: var(--surface);
  transition: border-color .15s ease, background-color .15s ease;
}
.mode-card input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.mode-card:hover { border-color: var(--brand); }
.mode-card:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); }
.mode-card:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 3px; }
.mode-ic { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--surface-2); color: var(--brand); }
.mode-card:has(input:checked) .mode-ic { background: var(--brand); color: var(--on-brand); }
.mode-txt strong { display: block; font-family: var(--font-display); font-size: var(--text-title); line-height: 1.3; }
.mode-txt span { display: block; margin-top: 2px; font-size: var(--text-ui); line-height: 1.5; color: var(--ink-2); }
.mode-card:has(input:checked) .mode-txt strong::after { content: " · selected"; font: 600 var(--text-label)/1 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--brand); }
.rules-h { font-size: var(--text-title); margin: 28px 0 10px; }
.start-rules { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.start-rules li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; font-size: var(--text-ui); line-height: 1.55; color: var(--ink-2); }
.start-rules .icon { color: var(--brand); margin-top: 3px; }
.btn-start { min-width: 200px; }

/* ============================ Question layout ============================ */
.ex-layout { display: grid; gap: 18px; align-items: start; }
@media (min-width: 1100px) {
  .ex-layout { grid-template-columns: minmax(0, 1fr) 264px; gap: 24px; }
  .ex-nav { order: 2; position: sticky; top: 84px; max-height: calc(100dvh - 104px); overflow-y: auto; }
}
.q-head { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.q-head h1 { font-size: var(--step-2); margin: 0 0 8px; letter-spacing: -.02em; }
.q-head h1:focus { outline: none; }
.q-head h1:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
.q-head h1 .of { color: var(--ink-3); font-weight: 600; }
.q-head .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.q-tools { display: flex; flex-wrap: wrap; gap: 8px; }
.rv-report { margin-top: 22px; }
.flag-btn .icon { color: var(--ink-3); }
.flag-btn[aria-pressed="true"] { border-color: var(--coral); background: var(--coral-soft); color: var(--coral-ink); }
.flag-btn[aria-pressed="true"] .icon { color: var(--coral-ink); fill: currentColor; }
.qstem { max-width: 78ch; white-space: pre-line; }

/* MCQ inputs reuse the homepage .opt look */
.mcq { border: 0; margin: 0; padding: 0; min-width: 0; }
.mcq .choose { padding: 0; margin: 0 0 4px; font-weight: 700; font-size: var(--text-ui); color: var(--ink); }
.choose-count { margin: 0 0 12px; font-size: var(--text-sm); color: var(--ink-3); }
.choose-count.is-over { color: var(--coral-ink); font-weight: 700; }
label.opt { cursor: pointer; }
.opt.is-picked { border-color: var(--brand); background: var(--brand-soft); box-shadow: inset 0 0 0 1px var(--brand); }
.opt.is-picked .key { background: var(--brand); color: var(--on-brand); }
.opt:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 3px; }
input[type="checkbox"] + .key { border-radius: 8px; }
.answered .opt { cursor: default; }
.answered .opt:not(.is-correct-opt):not(.is-chosen):hover { background: var(--surface); border-color: var(--line-strong); }
.answered .opt .why { white-space: pre-line; }

/* Confidence */
.conf-row { margin-top: 22px; padding-top: 16px; border-top: 1px dashed var(--line-strong); }
.conf { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; border: 0; margin: 0; padding: 0; min-width: 0; }
.conf legend { float: left; padding: 0; margin-right: 6px; font-weight: 700; font-size: var(--text-ui); color: var(--ink); }
.conf-opts { display: inline-flex; padding: 4px; gap: 4px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 14px; }
.conf-opts label { position: relative; display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border-radius: 10px; cursor: pointer; font-weight: 700; font-size: var(--text-ui); color: var(--ink-2); }
.conf-opts label:hover { color: var(--ink); }
.conf-opts label:has(input:checked) { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-1); }
.conf-opts label:has(input:checked)::before { content: ""; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--brand); }
.conf-opts label:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }
.check-hint { margin: 14px 0 0; padding: 10px 14px; border-radius: 12px; background: var(--coral-soft); color: var(--coral-ink); font-weight: 700; font-size: var(--text-ui); }
.check-hint:focus { outline: none; }

/* Study-mode verdict line */
.qresult { display: flex; align-items: flex-start; gap: 8px; margin: 0 0 16px; }
.qresult .icon { margin-top: 2px; stroke-width: 2.6; }
.qresult.part { color: var(--coral-ink); background: var(--coral-soft); }
.qresult:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* Explanation */
.explain { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--line-strong); display: grid; gap: 12px; }
.explain h3 { font-size: var(--text-title); margin: 0 0 .25rem; }
.explain-body p { margin: 0; max-width: 78ch; color: var(--ink); }
.takeaway { display: flex; gap: 10px; align-items: flex-start; margin: 0; padding: 12px 16px; border-left: 4px solid var(--coral); border-radius: 0 12px 12px 0; background: var(--coral-soft); font-size: var(--text-ui); line-height: 1.55; color: var(--ink); }
.takeaway .icon { color: var(--coral-ink); margin-top: 3px; }
.explain .qsources { margin: 0; }

/* ============================ Navigator ============================ */
.ex-nav { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-l); box-shadow: var(--shadow-1); }
.qnav-toggle {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; min-height: 56px; padding: 0 16px;
  border: 0; background: none; color: var(--ink); cursor: pointer; border-radius: var(--r-l); font-weight: 700; font-size: var(--text-ui); text-align: left;
}
.qnav-toggle .qt-l, .qnav-toggle .qt-r { display: inline-flex; align-items: center; gap: 8px; min-width: 0; }
.qnav-toggle .qt-l { white-space: nowrap; }
.qnav-toggle .qt-r { text-align: right; }
.qnav-toggle .qt-l .icon { color: var(--brand); }
.qnav-toggle .nav-sum-mini { font: 500 var(--text-mono)/1.3 var(--font-mono); color: var(--ink-3); }
.qnav-toggle .icon:last-child { transition: transform .2s ease; }
.qnav-toggle[aria-expanded="true"] .icon:last-child { transform: rotate(180deg); }
.qnav-body { padding: 0 16px 16px; }
.ex-nav[data-open="false"] .qnav-body { display: none; }
.qnav-h { display: none; font-size: var(--text-title); margin: 0 0 2px; }
.nav-sum { display: none; margin: 0 0 12px; font: 500 var(--text-mono)/1.4 var(--font-mono); color: var(--ink-3); }
@media (min-width: 1100px) {
  .qnav-toggle { display: none; }
  .ex-nav[data-open] .qnav-body { display: block; padding: 18px; }
  .qnav-h, .nav-sum { display: block; }
}
.qgrid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(46px, 1fr)); gap: 6px; }
.qn {
  position: relative; display: grid; place-items: center; width: 100%; height: 46px; padding: 0; cursor: pointer;
  border-radius: 10px; border: 1.5px solid var(--line-strong); background: var(--surface); color: var(--ink-2);
  font: 600 var(--text-mono)/1 var(--font-mono);
}
.qn:hover { border-color: var(--brand); color: var(--ink); }
.qn .qn-p { position: absolute; left: 4px; top: 3px; font-size: var(--text-label); letter-spacing: 0; line-height: 1; color: var(--ink-3); }
.qn .qn-st { position: absolute; right: 3px; bottom: 3px; display: grid; }
.qn .qn-st .icon, .qn .qn-f .icon { width: 12px; height: 12px; stroke-width: 3; }
.qn .qn-f { position: absolute; right: 3px; top: 3px; display: grid; color: var(--coral-ink); }
.qn .qn-f .icon { fill: currentColor; }
.qn.is-done { background: var(--brand-soft); border-color: var(--brand); color: var(--brand); }
.qn.is-partial { border-style: dashed; border-color: var(--brand); color: var(--ink); }
.qn.is-flagged { border-color: var(--coral); }
.qn.is-done.is-flagged { border-color: var(--coral); }
.qn.is-right { background: var(--mint-soft); border-color: var(--mint); color: var(--mint); }
.qn.is-wrong { background: var(--rose-soft); border-color: var(--rose); color: var(--rose); }
.qn[aria-current="step"] { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--ink); color: var(--ink); font-weight: 700; }
.qn[aria-current="step"] .qn-n { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 3px; }
.qlegend { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: var(--text-sm); color: var(--ink-3); }
.qlegend li { display: inline-flex; align-items: center; gap: 6px; }
.qlegend .sw { display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 5px; border: 1.5px solid var(--line-strong); background: var(--surface); }
.qlegend .sw .icon { width: 11px; height: 11px; stroke-width: 3; }
.qlegend .sw.is-done { background: var(--brand-soft); border-color: var(--brand); color: var(--brand); }
.qlegend .sw.is-partial { border-style: dashed; border-color: var(--brand); }
.qlegend .sw.is-flagged { border-color: var(--coral); color: var(--coral-ink); }
.qlegend .sw.is-flagged .icon { fill: currentColor; }
.qlegend .sw.is-current { box-shadow: 0 0 0 1.5px var(--surface), 0 0 0 3px var(--ink); }
.qlegend .sw.is-right { background: var(--mint-soft); border-color: var(--mint); color: var(--mint); }
.qlegend .sw.is-wrong { background: var(--rose-soft); border-color: var(--rose); color: var(--rose); }
.qnav-review { width: 100%; margin-top: 16px; }

/* ============================ PBQ shell ============================ */
.pbq { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--surface); }
.pbq .pbq-bar { padding: 8px 8px 8px 14px; }
.pbq .pbq-bar .t { display: inline-flex; align-items: center; gap: 8px; font-size: var(--text-mono); }
.pbq .pbq-bar .t .icon { color: var(--brand); }
.pbq .pbq-body { padding: clamp(14px, 2.4vw, 22px); }
.pbq-stack { display: grid; gap: 22px; min-width: 0; }
.pbq-stack > * { min-width: 0; }
.pbq-two { display: grid; gap: 18px; min-width: 0; }
.pbq-two > * { min-width: 0; }
@media (min-width: 900px) { .pbq-two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; } }
.pbq-brief { margin: 0; }
.pbq-brief h3 { display: flex; align-items: center; gap: 8px; margin-bottom: .5rem; }
.pbq-brief h3 .icon { color: var(--brand); }
.pbq-brief p + p { margin-top: .5rem; }
.pbq-sub { font-family: var(--font-mono); font-size: var(--text-mono); font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin: 0 0 8px; }
h4.pbq-sub { margin-top: 6px; }
.pbq-hint { margin: 8px 0 0; font-size: var(--text-sm); line-height: 1.5; color: var(--ink-3); }
.done-when { display: flex; gap: 10px; align-items: flex-start; margin: 22px 0 0; padding: 12px 14px; border-radius: 12px; border: 1.5px dashed var(--line-strong); font-size: var(--text-ui); line-height: 1.55; color: var(--ink-2); }
.done-when .icon { color: var(--brand); margin-top: 3px; }
.done-when strong { color: var(--ink); }
.req-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.req-list li { display: grid; grid-template-columns: 36px 1fr; gap: 8px; font-size: var(--text-ui); line-height: 1.5; color: var(--ink); }
.req-id { font: 600 var(--text-mono)/1.6 var(--font-mono); color: var(--brand); }
.src-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 4px; font-size: var(--text-sm); color: var(--ink-2); }
.src-list code { margin-right: 8px; color: var(--brand); font-weight: 600; }

/* Dropdowns used by every PBQ editor */
.fsel {
  min-height: 44px; max-width: 100%; padding: .4rem .55rem; border-radius: 10px; border: 1.5px solid var(--line-strong);
  background: var(--surface); color: var(--ink); font: 500 var(--text-ui)/1.3 var(--font-body); cursor: pointer;
}
.fw-table .fsel, .matrix .fsel { min-height: 40px; font: 500 var(--text-mono)/1.25 var(--font-mono); }
.fsel:hover { border-color: var(--brand); }
.fsel:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--brand); }

/* Tables inside PBQs (extends .rules from site.css) */
.pbq .rules-wrap, .pbq-debrief .rules-wrap { background: var(--surface); }
.rules td.wrap, .rules th.wrap { white-space: normal; min-width: 16ch; }
.rules td.num { vertical-align: middle; }
.rules td.num b { display: block; font-weight: 600; color: var(--ink); }
.rules td.num small { display: block; max-width: 14ch; white-space: normal; font-size: var(--text-label); color: var(--ink-3); line-height: 1.3; }
.fw-table th, .fw-table td { vertical-align: middle; padding: .4rem .35rem; }
.fw-table th:first-child, .fw-table td:first-child { padding-left: .7rem; }
.fw-table .fsel { min-width: 8.5ch; padding-inline: .4rem .2rem; }
.fw-table .implicit-note { min-width: 0; }
.fw-table tr.is-incomplete td { background: var(--coral-soft); }
.fw-table tr.implicit td, .rules tr.implicit td { color: var(--ink-3); background: var(--surface-2); font-style: italic; }
.row-ctrls { display: flex; gap: 4px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 38px; height: 38px; padding: 0; border-radius: 9px; cursor: pointer;
  border: 1.5px solid var(--line-strong); background: var(--surface); color: var(--ink-2);
}
.icon-btn:hover:not([disabled]) { border-color: var(--brand); color: var(--brand); }
.icon-btn[disabled] { opacity: .35; cursor: not-allowed; }
.icon-btn .icon { width: 18px; height: 18px; }
.fw-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.fw-foot .slots { font: 500 var(--text-mono)/1.3 var(--font-mono); color: var(--ink-3); }
.warn-line { flex-basis: 100%; display: flex; gap: 8px; align-items: flex-start; margin: 0; font-size: var(--text-sm); line-height: 1.5; color: var(--coral-ink); font-weight: 600; }
.warn-line .icon { margin-top: 2px; }

/* Log lines */
.pbq .logs, .pbq-debrief .logs { overflow: visible; }
.logs .loglines { list-style: none; margin: 0; padding: 4px 0; min-width: 0; font-family: var(--font-mono); font-size: var(--text-mono); line-height: 1.55; }
.logs .loglines li { display: block; padding: 0; white-space: normal; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.loglines li:last-child { border-bottom: 0; }
.logline { display: grid; grid-template-columns: 22px 34px minmax(0, 1fr); gap: 8px; align-items: start; padding: 7px 12px; cursor: pointer; }
.logline input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--brand); cursor: pointer; }
.logline:hover { background: var(--surface-2); }
.loglines li.is-on { background: var(--brand-soft); color: var(--ink); }
.loglines li:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: -3px; }
.loglines .ln { font-weight: 600; color: var(--ink-3); }
.loglines .tx { white-space: pre-wrap; overflow-wrap: anywhere; min-width: 0; }
.loglines .ts { color: var(--ink-3); margin-right: 8px; }
.loglines .src { display: inline-block; margin-right: 6px; padding: 0 .4rem; border-radius: 6px; background: var(--surface-2); color: var(--ink-2); font-size: var(--text-label); line-height: 1.6; }
.logs .loglines.review li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 4px 8px; padding: 7px 12px; }
.loglines.review .line-tags { grid-column: 2; display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; }
.loglines.review .line-tags:empty { display: none; }
.pbq-qs { display: grid; gap: 16px; }
.pbq-q { border: 1px solid var(--line); border-radius: var(--r); margin: 0; padding: 14px 16px 16px; min-width: 0; }
.pbq-q legend { padding: 0 6px; margin-left: -6px; font-weight: 700; font-size: var(--text-ui); line-height: 1.45; color: var(--ink); max-width: 100%; white-space: normal; }
.choices { display: grid; gap: 8px; margin-top: 8px; }
.choice { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; padding: 10px 12px; border-radius: 12px; border: 1.5px solid var(--line-strong); cursor: pointer; font-size: var(--text-ui); line-height: 1.45; }
.choice input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--brand); cursor: pointer; }
.choice:hover { border-color: var(--brand); }
.choice:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); }
.choice:has(input:focus-visible) { outline: 3px solid var(--focus); outline-offset: 2px; }

/* Placement */
.pool-chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.pool-chips li { font: 600 var(--text-mono)/1.3 var(--font-mono); padding: .4rem .7rem; border-radius: 9px; background: var(--surface); border: 1.5px solid var(--line-strong); color: var(--ink); }
.pool-chips li.is-used { border-style: dashed; color: var(--ink-3); text-decoration: line-through; }
.pz { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); }
.pz .zone { min-height: 0; }
.slot { display: grid; gap: 6px; }
.slot label { font-size: var(--text-sm); line-height: 1.4; color: var(--ink); font-weight: 600; }
.slot .fsel { width: 100%; }

/* Matching */
.match-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.match-list li { display: grid; gap: 8px; align-items: center; }
@media (min-width: 720px) { .match-list li { grid-template-columns: minmax(0, 1fr) minmax(200px, 280px); } }
.match-list .ev { display: grid; grid-template-columns: 26px 1fr; gap: 8px; padding: 10px 12px; border-radius: 12px; background: var(--surface-2); font-size: var(--text-ui); line-height: 1.45; color: var(--ink); }
.match-list .ev .n { font: 600 var(--text-mono)/1.6 var(--font-mono); color: var(--brand); }
.match-list .fsel { width: 100%; }

/* Access matrix and tool output */
.matrix th small, .matrix td small { display: block; margin-top: 2px; font-family: var(--font-body); font-size: var(--text-label); font-weight: 400; color: var(--ink-3); white-space: normal; text-transform: none; letter-spacing: 0; max-width: 22ch; }
.matrix tbody th { font-family: var(--font-body); font-size: var(--text-sm); white-space: normal; min-width: 14ch; vertical-align: top; }
.matrix td { vertical-align: top; }
.matrix td.given span { font-weight: 600; color: var(--ink); }
.matrix td.given { background: var(--surface-2); }
.findings td.finding b { display: block; color: var(--ink); }
.findings td.finding span { display: block; margin-top: 2px; font-family: var(--font-body); font-size: var(--text-sm); color: var(--ink-2); }
.findings td.wrap { min-width: 22ch; }
.report-head-pre { margin: 0 0 10px; padding: 10px 12px; border-radius: 10px; background: var(--surface-2); font: 500 var(--text-mono)/1.5 var(--font-mono); color: var(--ink-2); white-space: pre-wrap; overflow-wrap: anywhere; }
.task-rows { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 10px; }
.task-rows li { display: grid; gap: 6px; align-items: center; }
@media (min-width: 720px) { .task-rows li { grid-template-columns: minmax(0, 1fr) minmax(200px, 300px); } }
.task-rows label { font-size: var(--text-ui); line-height: 1.45; }
.task-rows label code { color: var(--brand); font-weight: 600; }
.task-rows .fsel { width: 100%; }

/* ============================ Debriefs ============================ */
.mark.part { color: var(--coral-ink); }
.pbq-debrief { margin-top: 0; gap: 14px; }
.pbq-debrief .credit { flex-wrap: wrap; gap: 6px 12px; }
.pbq-debrief .credit .meter { flex: 1 1 160px; }
.pbq-debrief .credit b { white-space: normal; }
.pbq-debrief .credit .meter i { width: var(--c, 0%); }
.units { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.unit { padding: 12px 14px; border-radius: 12px; background: var(--surface-2); }
.unit-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; }
.unit-head strong { flex: 1 1 220px; font-size: var(--text-ui); line-height: 1.45; color: var(--ink); }
.unit-head .pts { font: 500 var(--text-mono)/1.3 var(--font-mono); color: var(--ink-3); }
.unit-ans { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 8px 0 0; font-size: var(--text-sm); line-height: 1.5; }
.unit-ans dt { color: var(--ink-3); font-weight: 600; }
.unit-ans dd { margin: 0; color: var(--ink); }
.unit-note { margin: 6px 0 0; font-size: var(--text-sm); color: var(--ink-3); }
.unit .why { margin: 8px 0 0; font-size: var(--text-ui); line-height: 1.58; color: var(--ink-2); }
.rules td .mark { font-size: var(--text-mono); }
.rules td.conn { min-width: 27ch; }
.rules td.conn small { display: block; font-family: var(--font-body); font-size: var(--text-sm); color: var(--ink-3); }
.rules tr.bad td { background: var(--rose-soft); }
.rules td.muted { color: var(--ink-3); }
.fw-more { border: 1px solid var(--line); border-radius: 12px; padding: 0 14px; }
.fw-more summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 700; font-size: var(--text-ui); color: var(--brand); }
.fw-more[open] { padding-bottom: 14px; }

/* ============================ Review screen ============================ */
.review h1 { font-size: var(--step-3); margin-bottom: .3em; }
.review h1:focus { outline: none; }
.review .lead { color: var(--ink-2); }
.review > .ex-card { margin-top: 18px; }
.review-cols { display: grid; gap: 18px; margin-top: 8px; }
@media (min-width: 900px) { .review-cols { grid-template-columns: 1fr 1fr; } }
.review h2 { display: flex; align-items: center; gap: 10px; font-size: var(--text-title); margin: 0 0 12px; }
.review h2 .count { font: 600 var(--text-mono)/1 var(--font-mono); padding: .35rem .55rem; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); }
.jump-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.jump {
  display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; align-items: center; width: 100%; padding: 10px 14px; text-align: left; cursor: pointer;
  border-radius: 12px; border: 1.5px solid var(--line-strong); background: var(--surface); color: var(--ink); font-size: var(--text-ui);
}
.jump:hover { border-color: var(--brand); }
.jump .jn { font-weight: 700; }
.jump .jt, .jump .js { grid-column: 1; font-size: var(--text-sm); color: var(--ink-3); display: inline-flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; }
.jump .jf { display: inline-flex; align-items: center; gap: 4px; color: var(--coral-ink); font-weight: 700; }
.jump .jf .icon { width: 14px; height: 14px; fill: currentColor; }
.jump > .icon { grid-column: 2; grid-row: 1 / span 3; color: var(--brand); }

/* ============================ Results ============================ */
.results-head h1 { font-size: var(--step-3); margin-bottom: .2em; }
.results-head h1:focus { outline: none; }
.results-head .lead { color: var(--ink-2); font-size: var(--text-ui); }
.results .report { max-width: 760px; box-shadow: var(--shadow-2); margin-top: 10px; }
.results .verdict-chip { display: inline-flex; align-items: center; gap: 6px; }
.results .verdict-chip .icon { width: 1rem; height: 1rem; }
.results .verdict-chip.is-pass { background: var(--brand-soft); color: var(--brand); }
.results .verdict-chip.is-neutral { background: var(--surface-2); color: var(--ink-2); }
.raw-line { margin: -14px 0 20px; font-size: var(--text-sm); line-height: 1.55; color: var(--ink-3); }
.score-row + .raw-line { margin-top: 4px; }
.dbar .n small.below { display: inline-flex; align-items: center; gap: 3px; color: var(--coral-ink); font-weight: 600; }
.dbar .n small.below .icon { width: .85rem; height: .85rem; }
.report-cols ul { margin-bottom: 4px; }
.report-cols li a { color: var(--ink); text-decoration-color: color-mix(in srgb, var(--ink) 35%, transparent); }
.report-cols li a:hover { color: var(--brand); }
.report-cols .h-gap { margin-top: 16px; }
.res-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.rv-section { margin-top: clamp(40px, 6vw, 64px); }
.rv-section h2 { font-size: var(--step-2); margin-bottom: .25em; }
.rv-intro { color: var(--ink-2); font-size: var(--text-ui); margin-bottom: 16px; }
.rv-tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.rv-tools .seg { flex-wrap: wrap; }
.rv-tools .seg button { padding: 0 14px; }
.rv-tools .seg .cnt { font: 600 var(--text-label)/1 var(--font-mono); color: var(--ink-3); }
.rv-tools .seg button[aria-pressed="true"] .cnt { color: var(--brand); }
.rv-tools .seg button:focus-visible { outline-offset: 1px; }
.rv-status { margin: 10px 0 12px; font-size: var(--text-sm); color: var(--ink-3); }
.rv-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.rv { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow-1); }
.rv > summary {
  list-style: none; display: grid; grid-template-columns: 44px minmax(0, 1fr) 24px; gap: 10px; align-items: start;
  padding: 14px 16px; cursor: pointer; border-radius: var(--r);
}
.rv > summary::-webkit-details-marker { display: none; }
.rv > summary:hover .rv-stem { color: var(--ink); }
.rv-n { font: 700 var(--text-ui)/1.6 var(--font-mono); color: var(--brand); }
.rv-main { display: grid; gap: 6px; min-width: 0; }
.rv-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.rv-flag { display: inline-flex; align-items: center; gap: 4px; font: 600 var(--text-mono)/1 var(--font-mono); color: var(--coral-ink); }
.rv-flag .icon { width: .95rem; height: .95rem; fill: currentColor; }
.rv-conf { font: 600 var(--text-label)/1.3 var(--font-mono); text-transform: uppercase; letter-spacing: .06em; padding: .3rem .55rem; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--ink-2); }
.rv-stem { font-size: var(--text-ui); line-height: 1.5; color: var(--ink-2); }
.rv-chev { margin-top: 4px; color: var(--ink-3); transition: transform .2s ease; }
.rv[open] .rv-chev { transform: rotate(180deg); }
.rv[open] .rv-stem { display: none; }
.rv-body { padding: 4px 16px 18px; border-top: 1px dashed var(--line-strong); margin: 0 16px; padding-inline: 0; padding-top: 16px; }
.rv-yours { margin: 0 0 10px; font-size: var(--text-ui); color: var(--ink-2); }
.rv-yours strong { color: var(--ink); }
.rv-body .answered { margin-top: 14px; }
.rv-body .pbq-debrief { margin-top: 14px; }
@media (max-width: 520px) {
  .rv > summary { grid-template-columns: 34px minmax(0, 1fr) 20px; padding: 12px; gap: 8px; }
  .rv-body { margin: 0 12px; }
}

/* ============================ Dialog ============================ */
.dlg {
  width: min(100% - 32px, 480px); padding: clamp(20px, 4vw, 28px); border: 1px solid var(--line); border-radius: var(--r-l);
  background: var(--surface); color: var(--ink); box-shadow: var(--shadow-3);
}
.dlg::backdrop { background: color-mix(in srgb, var(--night) 60%, transparent); }
.dlg h2 { font-size: var(--step-2); margin: 0 0 .4em; }
.dlg p { margin: 0; color: var(--ink-2); font-size: var(--text-ui); line-height: 1.6; }
.dlg-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; margin-top: 22px; }

/* ============================ Small screens ============================ */
@media (max-width: 520px) {
  .ex-card { padding: 14px; border-radius: var(--r); }
  .pbq .pbq-body { padding: 12px; }
  .ex-actions .btn { flex: 1 1 auto; }
  .ex-actions .btn:last-child { margin-left: 0; }
  .conf legend { float: none; margin-bottom: 4px; }
  .start-actions .btn { width: 100%; }
  .res-actions .btn { width: 100%; }
  .q-tools { width: 100%; }
  .q-tools .btn { flex: 1 1 auto; }
  .opt { padding: 10px 12px; }
  .unit-ans { grid-template-columns: 1fr; }
  .unit-ans dd + dt { margin-top: 4px; }
  /* answered options: rationale uses the full card width */
  .answered .opt { grid-template-columns: 30px 1fr; column-gap: 10px; }
  .answered .opt .key { grid-row: auto; width: 30px; height: 30px; }
  .answered .opt .verdict, .answered .opt .why { grid-column: 1 / -1; }
}

/* ============================ Motion & forced colours ============================ */
@media (prefers-reduced-motion: reduce) {
  .fb-progress i, .qnav-toggle .icon, .rv-chev { transition: none; }
}
@media (forced-colors: active) {
  .qn, .mode-card, .choice, .jump, .rv, .ex-card, .start-card { border: 1px solid CanvasText; }
  .qn[aria-current="step"], .mode-card:has(input:checked), .choice:has(input:checked), .opt.is-picked, .conf-opts label:has(input:checked) { outline: 3px solid Highlight; }
  .fb-progress { display: none; }
}
.results .scale-labels span { white-space: nowrap; }