/* ============ Theme tokens ============ */
:root {
  --bg: #f7f7f4;
  --surface: #ffffff;
  --surface-2: #f0efe9;
  --text: #1d1d1b;
  --text-2: #55554f;
  --border: #deddd4;
  --accent: #2563c9;
  --accent-soft: #e3ecfb;
  --good: #1f8a4c;
  --good-soft: #e3f4ea;
  --warn: #b86e00;
  --warn-soft: #fdf1dc;
  --bad: #c62f2f;
  --bad-soft: #fbe6e6;
  --purple: #6b46c1;
  --purple-soft: #efe8fb;
  --code-bg: #f3f2ec;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.04);
  --radius: 12px;
  --sidebar-w: 290px;
  --screen-bg: #ffffff;
  --screen-line: #c9c8bf;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #151514; --surface: #1d1d1b; --surface-2: #262623; --text: #ecebe5; --text-2: #a9a8a0;
    --border: #363631; --accent: #6ea2ff; --accent-soft: #1d2a44; --good: #4cc27f; --good-soft: #17301f;
    --warn: #f0a93b; --warn-soft: #362812; --bad: #ff6b6b; --bad-soft: #3a1b1b; --purple: #a98bff;
    --purple-soft: #2a2140; --code-bg: #232320; --shadow: none; --screen-bg: #1d1d1b; --screen-line: #45453f;
  }
}
:root[data-theme="dark"] {
  --bg: #151514; --surface: #1d1d1b; --surface-2: #262623; --text: #ecebe5; --text-2: #a9a8a0;
  --border: #363631; --accent: #6ea2ff; --accent-soft: #1d2a44; --good: #4cc27f; --good-soft: #17301f;
  --warn: #f0a93b; --warn-soft: #362812; --bad: #ff6b6b; --bad-soft: #3a1b1b; --purple: #a98bff;
  --purple-soft: #2a2140; --code-bg: #232320; --shadow: none; --screen-bg: #1d1d1b; --screen-line: #45453f;
}

/* ============ Base ============ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 1.6em 0 .5em; }
h1 { font-size: 2.1rem; margin-top: .2em; letter-spacing: -.01em; }
h2 { font-size: 1.55rem; padding-top: .6em; border-top: 1px solid var(--border); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.05rem; }
p { margin: .6em 0 .9em; }
ul, ol { padding-left: 1.4em; }
li { margin: .25em 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
img { max-width: 100%; }
code { background: var(--code-bg); padding: .1em .35em; border-radius: 5px; font-size: .9em;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; }
pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px;
  overflow-x: auto; font-size: .86rem; line-height: 1.55; }
pre code { background: none; padding: 0; font-size: inherit; }
strong { font-weight: 650; }
.muted { color: var(--text-2); }
.small { font-size: .9rem; }

/* ============ Layout ============ */
.topbar {
  position: sticky; top: 0; z-index: 30; height: 60px; display: flex; align-items: center; gap: 12px;
  padding: 0 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 700; color: var(--text); font-size: 1rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar .brand span { color: var(--accent); }
.topbar .spacer { flex: 1; }
.icon-btn {
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text); border-radius: 9px;
  height: 38px; min-width: 38px; padding: 0 10px; cursor: pointer; font-size: .9rem; display: inline-flex;
  align-items: center; justify-content: center; gap: 6px;
}
.icon-btn:hover { border-color: var(--accent); }
#menuBtn { display: none; }
.layout { display: flex; min-height: calc(100vh - 60px); }
.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w); border-right: 1px solid var(--border); background: var(--surface);
  position: sticky; top: 60px; height: calc(100vh - 60px); overflow-y: auto; padding: 14px 10px 40px;
}
.sidebar .group { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-2); margin: 16px 10px 6px; font-weight: 700; }
.sidebar a {
  display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 8px; color: var(--text); font-size: .93rem; line-height: 1.35;
}
.sidebar a:hover { background: var(--surface-2); text-decoration: none; }
.sidebar a.active { background: var(--accent-soft); color: var(--accent); font-weight: 650; }
.sidebar .num { flex: 0 0 24px; height: 24px; border-radius: 50%; border: 1.5px solid var(--border); display: inline-flex; align-items: center; justify-content: center; font-size: .72rem; color: var(--text-2); }
.sidebar a.done .num { background: var(--good); border-color: var(--good); color: #fff; }
.sidebar .progress-mini { margin: 6px 10px 10px; font-size: .82rem; color: var(--text-2); }
.bar { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; border: 1px solid var(--border); }
.bar > div { height: 100%; background: var(--good); width: 0; transition: width .3s; }
main { flex: 1; min-width: 0; padding: 28px 40px 80px; }
.content { max-width: 860px; margin: 0 auto; }
.overlay { display: none; }

@media (max-width: 960px) {
  #menuBtn { display: inline-flex; }
  .sidebar { position: fixed; left: 0; top: 60px; z-index: 40; transform: translateX(-100%); transition: transform .25s; box-shadow: var(--shadow); }
  body.nav-open .sidebar { transform: none; }
  body.nav-open .overlay { display: block; position: fixed; inset: 60px 0 0 0; background: rgba(0,0,0,.35); z-index: 35; }
  main { padding: 20px 16px 60px; }
  h1 { font-size: 1.7rem; }
  body { font-size: 16px; }
}

/* ============ Page header ============ */
.page-kicker { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--text-2); margin-top: .2em; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 18px; }
.pill { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; padding: 3px 10px; border-radius: 99px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-2); }
.pill.hot { background: var(--bad-soft); color: var(--bad); border-color: transparent; font-weight: 650; }
.pill.easy { background: var(--good-soft); color: var(--good); border-color: transparent; font-weight: 650; }
.pill.mid { background: var(--warn-soft); color: var(--warn); border-color: transparent; font-weight: 650; }

/* ============ TOC ============ */
.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px; margin: 18px 0 8px; }
.toc b { font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-2); }
.toc ol { margin: 8px 0 0; columns: 2; column-gap: 28px; font-size: .93rem; }
@media (max-width: 700px) { .toc ol { columns: 1; } }

/* ============ Callouts ============ */
.callout { border-radius: var(--radius); padding: 14px 18px 12px; margin: 18px 0; border: 1px solid var(--border); background: var(--surface); border-left-width: 5px; }
.callout > .label { display: block; font-size: .75rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px; }
.callout p:last-child, .callout ul:last-child, .callout ol:last-child { margin-bottom: 0; }
.callout p:first-of-type { margin-top: 0; }
.callout.idea { border-left-color: var(--accent); background: var(--accent-soft); }
.callout.idea .label { color: var(--accent); }
.callout.say { border-left-color: var(--good); background: var(--good-soft); }
.callout.say .label { color: var(--good); }
.callout.warn { border-left-color: var(--warn); background: var(--warn-soft); }
.callout.warn .label { color: var(--warn); }
.callout.bad { border-left-color: var(--bad); background: var(--bad-soft); }
.callout.bad .label { color: var(--bad); }
.callout.example { border-left-color: var(--purple); background: var(--purple-soft); }
.callout.example .label { color: var(--purple); }
.say-quote { font-style: italic; }

/* ============ Cards / grids ============ */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); margin: 16px 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); }
.card h3, .card h4 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--text-2); font-size: .94rem; }
a.card { color: var(--text); display: block; transition: border-color .15s, transform .15s; }
a.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
a.card .go { color: var(--accent); font-size: .88rem; font-weight: 650; margin-top: 8px; display: inline-block; }
.big-num { font-size: 2rem; font-weight: 800; color: var(--accent); line-height: 1; }

/* ============ Tables ============ */
.table-wrap { overflow-x: auto; margin: 16px 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--border); }
th { background: var(--surface-2); font-weight: 700; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }

/* ============ Steps ============ */
.steps { counter-reset: step; list-style: none; padding: 0; }
.steps > li { counter-increment: step; position: relative; padding: 2px 0 12px 48px; margin: 0; }
.steps > li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: .9rem; }
.steps > li::after { content: ""; position: absolute; left: 15px; top: 34px; bottom: 0; width: 2px; background: var(--border); }
.steps > li:last-child::after { display: none; }
.steps > li > strong:first-child { display: block; }

/* ============ Q&A details ============ */
details.qa { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin: 10px 0; }
details.qa > summary { cursor: pointer; padding: 12px 16px 12px 44px; font-weight: 650; position: relative; list-style: none; }
details.qa > summary::-webkit-details-marker { display: none; }
details.qa > summary::before { content: "+"; position: absolute; left: 14px; top: 11px; width: 20px; height: 20px; border-radius: 6px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 800; }
details.qa[open] > summary::before { content: "\2013"; }
details.qa > summary .qn { color: var(--accent); margin-right: 6px; }
details.qa > .ans { padding: 0 18px 14px 44px; border-top: 1px dashed var(--border); }
details.qa > .ans > p:first-child { margin-top: 12px; }
.short { background: var(--good-soft); border-radius: 8px; padding: 8px 12px; margin: 12px 0 8px; }
.short b { color: var(--good); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.btn { border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 9px; padding: 8px 14px; cursor: pointer; font-size: .92rem; font-weight: 600; }
.btn.secondary { background: var(--surface); color: var(--accent); }
.btn:hover { filter: brightness(1.05); }

/* ============ Page end ============ */
.done-box { margin: 40px 0 10px; padding: 16px 18px; border: 1px dashed var(--border); border-radius: var(--radius); display: flex; align-items: center; gap: 12px; background: var(--surface); }
.done-box input { width: 22px; height: 22px; accent-color: var(--good); }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; }
.pager a { flex: 1; border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 16px; background: var(--surface); color: var(--text); }
.pager a:hover { border-color: var(--accent); text-decoration: none; }
.pager a small { display: block; color: var(--text-2); font-size: .78rem; }
.pager a.next { text-align: right; }

/* ============ Figures / SVG ============ */
figure { margin: 18px 0; }
figure.diagram { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; }
figure svg { width: 100%; height: auto; display: block; }
figcaption { font-size: .86rem; color: var(--text-2); margin-top: 8px; text-align: center; }
svg .t { fill: var(--text); font-family: inherit; }
svg .t2 { fill: var(--text-2); font-family: inherit; }
svg .box { fill: var(--surface); stroke: var(--screen-line); stroke-width: 1.3; }
svg .box-accent { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 2; }
svg .box-good { fill: var(--good-soft); stroke: var(--good); stroke-width: 2; }
svg .box-warn { fill: var(--warn-soft); stroke: var(--warn); stroke-width: 2; }
svg .box-bad { fill: var(--bad-soft); stroke: var(--bad); stroke-width: 2; }
svg .line { stroke: var(--text-2); stroke-width: 1.4; fill: none; }
svg .line-accent { stroke: var(--accent); stroke-width: 2.5; fill: none; }
svg .screen { fill: var(--screen-bg); stroke: var(--screen-line); stroke-width: 1.5; }
svg .fill-accent { fill: var(--accent); }
svg .fill-good { fill: var(--good); }
svg .fill-text { fill: var(--text); }
svg .answers { display: none; }
.show-answers svg .answers { display: inline; }
svg .mk { fill: var(--bad); stroke: #fff; stroke-width: 1.5; }
svg .mk-t { fill: #fff; font-weight: 800; font-size: 11px; font-family: inherit; }

/* Image with marker overlay */
.shot { position: relative; display: inline-block; width: 100%; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.shot img { display: block; width: 100%; }
.shot .m { position: absolute; transform: translate(-50%, -50%); width: 26px; height: 26px; border-radius: 50%; background: #d42c2c; color: #fff; font-weight: 800; font-size: 12px; display: none; align-items: center; justify-content: center; border: 2px solid #fff; box-shadow: 0 1px 4px rgba(0,0,0,.5); }
.show-answers .shot .m { display: flex; }
.answer-block { display: none; }
.show-answers .answer-block { display: block; }
.drill { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin: 20px 0; }
.drill h3 { margin-top: 0; }
.timer { font-variant-numeric: tabular-nums; font-weight: 700; }

/* ============ Interactive tools ============ */
.tool { background: var(--surface); border: 2px solid var(--accent); border-radius: var(--radius); padding: 16px 18px; margin: 20px 0; }
.tool h3 { margin-top: 0; }
.tool label { font-weight: 600; font-size: .92rem; }
.tool input[type=range] { width: 100%; accent-color: var(--accent); }
.tool select, .tool input[type=text], .tool input[type=number] { font: inherit; padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); }
.tool select, .toolbar select { max-width: 100%; }
.readout { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 12px 0; }
.readout .val { font-size: 1.6rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.lamp { width: 64px; height: 64px; border-radius: 14px; border: 2px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 34px; background: var(--surface-2); color: var(--text-2); opacity: .35; transition: all .2s; }
.lamp.on { opacity: 1; background: #fff4d6; border-color: #e0a100; color: #1d4e9e; box-shadow: 0 0 0 4px rgba(224,161,0,.2); }
.hint { font-size: .92rem; padding: 8px 12px; border-radius: 8px; background: var(--surface-2); }

/* ============ Glossary / quiz ============ */
.search { width: 100%; font: inherit; padding: 12px 16px; border-radius: 12px; border: 1.5px solid var(--border); background: var(--surface); color: var(--text); margin: 10px 0; }
.search:focus { outline: none; border-color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 14px; }
.chip { border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 99px; padding: 4px 12px; font-size: .85rem; cursor: pointer; }
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.term { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 8px 0; }
.term h4 { margin: 0 0 4px; font-size: 1.02rem; }
.term .cat { font-size: .72rem; color: var(--text-2); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin-left: 8px; }
.term p { margin: 2px 0; font-size: .95rem; }
.term .ex { color: var(--text-2); font-style: italic; }
.flash { perspective: 1000px; margin: 16px 0; }
.flash-card { background: var(--surface); border: 2px solid var(--accent); border-radius: 16px; min-height: 200px; padding: 26px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; cursor: pointer; user-select: none; }
.flash-card .front { font-size: 1.7rem; font-weight: 800; }
.flash-card .back { font-size: 1.05rem; }
.quiz-q { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin: 14px 0; }
.quiz-q .opts { display: grid; gap: 8px; margin-top: 10px; }
.quiz-q button.opt { text-align: left; font: inherit; font-size: .95rem; padding: 10px 14px; border-radius: 10px; border: 1.5px solid var(--border); background: var(--surface-2); color: var(--text); cursor: pointer; }
.quiz-q button.opt:hover:not([disabled]) { border-color: var(--accent); }
.quiz-q button.opt.right { border-color: var(--good); background: var(--good-soft); }
.quiz-q button.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.quiz-q .why { display: none; margin-top: 10px; font-size: .93rem; padding: 10px 12px; border-radius: 8px; background: var(--accent-soft); }
.quiz-q.answered .why { display: block; }
.score { position: sticky; top: 70px; z-index: 5; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px; font-weight: 700; display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }

/* ============ Word help ============ */
.w { border-bottom: 2px dotted var(--accent); cursor: help; border-radius: 2px; }
.w:hover, .w:focus { background: var(--accent-soft); outline: none; }
#wtip { position: fixed; z-index: 100; display: none; max-width: min(320px, calc(100vw - 16px)); background: var(--text); color: var(--bg);
  padding: 10px 13px; border-radius: 10px; font-size: .95rem; line-height: 1.45; box-shadow: 0 8px 24px rgba(0,0,0,.28); pointer-events: none; }
#wtip b { display: block; font-size: .78rem; letter-spacing: .04em; text-transform: uppercase; opacity: .75; margin-bottom: 2px; }
.word-hint { display: flex; gap: 10px; align-items: flex-start; background: var(--accent-soft); border-radius: 10px; padding: 10px 12px; font-size: .92rem; margin: 6px 0 12px; }
.word-hint button { margin-left: auto; border: 0; background: none; color: var(--text-2); font-size: 1.3rem; line-height: 1; cursor: pointer; padding: 0 4px; }
.w-demo { border-bottom: 2px dotted var(--accent); }
#wordBtn b { font-size: .75rem; }
@media (max-width: 600px) { #wordBtn .lbl { display: none; } }

/* ============ "In very simple words" box ============ */
.callout.simple { border: 2px solid var(--accent); border-left-width: 6px; background: var(--surface); }
.callout.simple .label { color: var(--accent); font-size: .8rem; }
.callout.simple ul { margin: .3em 0 .5em; padding-left: 1.2em; }
.callout.simple li { margin: .3em 0; }
.callout.simple .like { background: var(--accent-soft); border-radius: 8px; padding: 8px 12px; margin: 8px 0 6px; }
.callout.simple .like b { color: var(--accent); }
.callout.simple .pics { font-size: .92rem; font-weight: 600; }

/* ============ Picture cards (visual.html) ============ */
.pic { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin: 22px 0; box-shadow: var(--shadow); }
.pic h3 { margin: 0 0 4px; }
.pic .q { color: var(--text-2); margin: 0 0 12px; font-size: .95rem; }
.pic svg { width: 100%; max-width: 620px; height: auto; display: block; margin: 0 auto; }
.pic ul { margin: 12px 0 4px; }
.pic .say-line { background: var(--good-soft); border-radius: 8px; padding: 9px 12px; margin: 10px 0 0; font-size: .95rem; }
.pic .say-line b { color: var(--good); }
svg .arrow { stroke: var(--text-2); stroke-width: 2; fill: none; }
svg .arrow-accent { stroke: var(--accent); stroke-width: 2.5; fill: none; }
svg .arrow-bad { stroke: var(--bad); stroke-width: 2.2; fill: none; }
svg .arrow-good { stroke: var(--good); stroke-width: 2.5; fill: none; }
svg .dash { stroke-dasharray: 5 4; }
svg .fill-bad { fill: var(--bad); }
svg .fill-warn { fill: var(--warn); }
svg .fill-soft { fill: var(--accent-soft); }
svg .fill-surface2 { fill: var(--surface-2); stroke: var(--screen-line); stroke-width: 1.3; }
svg .t-accent { fill: var(--accent); font-family: inherit; }
svg .t-good { fill: var(--good); font-family: inherit; }
svg .t-bad { fill: var(--bad); font-family: inherit; }
svg .t-warn { fill: var(--warn); font-family: inherit; }
svg .t-mono { fill: var(--text); font-family: ui-monospace, Consolas, monospace; }
svg .b { font-weight: 700; }

/* ============ CANoe lab ============ */
.content.wide { max-width: 1180px; }
.lab { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0 28px; }
.lab .full { grid-column: 1 / -1; }
@media (max-width: 900px) { .lab { grid-template-columns: 1fr; } }
.win { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; min-width: 0; display: flex; flex-direction: column; }
.win[hidden] { display: none; }
.win-t { display: flex; align-items: center; gap: 10px; justify-content: space-between; flex-wrap: wrap; background: var(--surface-2); border-bottom: 1px solid var(--border);
  padding: 6px 12px; font-size: .85rem; font-weight: 700; }
.win-hint { font-weight: 600; color: var(--text-2); font-size: .78rem; }
.win-tools { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; font-weight: 400; }
.win-tools input, .win-tools select { font: inherit; font-size: .82rem; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); max-width: 100%; }
.win-b { padding: 12px; flex: 1; min-width: 0; }
.win-foot { font-size: .8rem; color: var(--text-2); padding: 6px 12px; border-top: 1px solid var(--border); }
.mini { font: inherit; font-size: .8rem; padding: 3px 9px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; }
.mini.on { background: var(--warn-soft); border-color: var(--warn); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { font: inherit; font-size: .82rem; padding: 5px 11px; border: 0; background: var(--surface); color: var(--text); cursor: pointer; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--accent); color: #fff; }
.toolbar-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.toolbar-row .spacer { flex: 1; }
.lab-start { background: var(--good); border-color: var(--good); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.lab-time { font-family: ui-monospace, Consolas, monospace; font-weight: 700; font-size: .95rem; }
.lab-state { font-size: .85rem; color: var(--text-2); }
.lab-state.run { color: var(--good); font-weight: 700; }
.lab-load { font-size: .82rem; color: var(--text-2); }
/* lessons */
.lesson-win { border: 2px solid var(--accent); }
.lesson-win .win-t { background: var(--accent-soft); color: var(--accent); }
.ls-dots { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.ls-dots button { width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid var(--border); background: var(--surface); color: var(--text-2); font-size: .78rem; font-weight: 700; cursor: pointer; }
.ls-dots button.cur { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.ls-dots button.done { background: var(--good); border-color: var(--good); color: #fff; }
.ls-title { font-weight: 800; font-size: 1.1rem; margin-bottom: 4px; }
.ls-body { font-size: .98rem; }
.ls-body ol, .ls-body ul { margin: 6px 0; }
.ls-real { font-size: .88rem; color: var(--text-2); margin-top: 6px; }
.ls-foot { display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.ls-status { flex: 1; font-weight: 700; font-size: .92rem; }
.ls-status.ok { color: var(--good); }
.ls-status.wait { color: var(--text-2); font-weight: 600; }
/* panel */
.panel { position: relative; }
.p-row { margin-bottom: 12px; }
.p-row > label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 4px; }
.p-row input[type=range] { width: 100%; accent-color: var(--accent); }
.p-steps { display: flex; gap: 6px; margin-top: 6px; align-items: center; flex-wrap: wrap; }
.p-steps .btn { padding: 4px 10px; font-size: .85rem; }
.p-steps input { width: 90px; font: inherit; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); }
.p-checks { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .92rem; }
.p-checks label { font-weight: 500; display: inline-flex; align-items: center; gap: 6px; }
.p-rest { font-size: .88rem; border: 1px dashed var(--border); border-radius: 8px; padding: 6px 10px; }
.p-rest summary { cursor: pointer; font-weight: 600; }
.p-rest label { display: flex; gap: 6px; align-items: center; margin: 4px 0; }
.p-lock { display: none; position: absolute; inset: 0; background: var(--surface); opacity: .96; padding: 24px; font-size: .95rem; text-align: center; align-items: center; justify-content: center; }
.canalyzer .p-lock { display: flex; }
/* DUT */
#dut { width: 100%; height: auto; display: block; border-radius: 14px; }
.bug-box { margin-top: 10px; font-size: .9rem; }
.bug-box select { font: inherit; font-size: .88rem; padding: 5px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); max-width: 100%; margin: 4px 0; }
.guess { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin: 6px 0; }
.guess[hidden] { display: none; }
.guess .btn { padding: 5px 10px; font-size: .85rem; }
.spec summary { cursor: pointer; font-weight: 600; margin-top: 6px; }
.spec ol { font-size: .85rem; padding-left: 1.3em; }
/* trace */
.trace-wrap { padding: 0; max-height: 300px; overflow: auto; }
table.trace { font-family: ui-monospace, Consolas, monospace; font-size: .8rem; width: 100%; border-collapse: collapse; }
table.trace th { position: sticky; top: 0; background: var(--surface-2); z-index: 1; font-size: .75rem; }
table.trace td, table.trace th { padding: 4px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.trace tr.fr { cursor: pointer; }
table.trace tr.fr:hover td { background: var(--accent-soft); }
table.trace tr.dec td { background: var(--surface-2); white-space: normal; font-size: .8rem; }
table.trace .tx { color: var(--accent); font-weight: 700; }
table.trace .rx { color: var(--good); font-weight: 700; }
table.trace .by { display: inline-block; min-width: 1.6em; }
table.trace .chg { background: var(--warn-soft); color: var(--warn); font-weight: 700; border-radius: 3px; }
table.trace .unk { color: var(--text-2); font-style: italic; }
.tr-empty td { color: var(--text-2); font-family: inherit; padding: 14px !important; }
.dec-line { display: block; padding: 1px 0; }
.dec-line b { color: var(--accent); }
/* graphics / write */
#grCanvas { width: 100%; height: 200px; display: block; background: var(--surface-2); border-radius: 8px; }
.gr-val { font-size: .85rem; color: var(--text-2); margin-top: 6px; }
.write { font-family: ui-monospace, Consolas, monospace; font-size: .8rem; height: 232px; overflow: auto; background: var(--code-bg); padding: 8px 10px; }
.write div { white-space: pre-wrap; word-break: break-word; }
.write .sys { color: var(--text-2); }
.write .err { color: var(--bad); font-weight: 700; }
.write .pass { color: var(--good); font-weight: 700; }
.write .fail { color: var(--bad); font-weight: 700; }
/* IG / DB */
.ig label { font-size: .88rem; font-weight: 600; }
.ig select, .ig input { font: inherit; font-size: .88rem; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); max-width: 100%; }
.ig-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 8px 0; }
.ig-row input[type=number] { width: 60px; }
.ig-bytes { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; margin: 6px 0; }
.ig-bytes input { width: 100%; text-align: center; font-family: ui-monospace, Consolas, monospace; padding: 5px 2px; text-transform: uppercase; }
.ig-dec { font-size: .82rem; color: var(--text-2); min-height: 1.2em; }
.db { font-size: .82rem; max-height: 330px; overflow: auto; }
.db h4 { margin: 8px 0 4px; font-size: .88rem; }
.db table { font-size: .78rem; }
.db td, .db th { padding: 3px 6px; }
/* CAPL editor */
.capl-bar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.capl-bar select { font: inherit; font-size: .88rem; padding: 5px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); max-width: 100%; }
.editor { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--code-bg); height: 340px; }
.editor .gutter { margin: 0; padding: 10px 8px; border: 0; border-radius: 0; background: var(--surface-2); color: var(--text-2); text-align: right; font-size: .82rem; line-height: 1.5; overflow: hidden; user-select: none; min-width: 36px; }
.editor .gutter .errl { background: var(--bad); color: #fff; border-radius: 3px; padding: 0 3px; }
.editor textarea { flex: 1; border: 0; resize: none; background: transparent; color: var(--text); font-family: ui-monospace, Consolas, monospace; font-size: .82rem; line-height: 1.5; padding: 10px; outline: none; white-space: pre; overflow: auto; tab-size: 2; }
.keysim { display: inline-flex; gap: 6px; align-items: center; font-size: .88rem; }
.keysim input { width: 2.4em; text-align: center; font: inherit; padding: 4px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); }
.capl-help { font-size: .88rem; margin-top: 8px; }
.capl-help .ex-note { background: var(--accent-soft); border-radius: 8px; padding: 8px 12px; }
/* report */
.rep-case { border: 1px solid var(--border); border-radius: 8px; margin: 8px 0; overflow: hidden; }
.rep-case h4 { margin: 0; padding: 8px 12px; font-size: .92rem; display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.rep-case.pass h4 { background: var(--good-soft); }
.rep-case.fail h4 { background: var(--bad-soft); }
.rep-case table { font-size: .82rem; }
.v-pass { color: var(--good); font-weight: 800; }
.v-fail { color: var(--bad); font-weight: 800; }
.v-info { color: var(--text-2); }

/* ============ Print ============ */
@media print {
  .topbar, .sidebar, .pager, .done-box, .toolbar, .overlay { display: none !important; }
  main { padding: 0; }
  details.qa { break-inside: avoid; }
  details.qa > .ans { display: block; }
}