/* AI Harness Engineering — interactive activity widgets ("Deep Systems" theme).
   Each chapter has ONE activity. Vanilla JS, no deps. Uses style.css variables. */

/* === Generic activity wrapper === */
.activity {
  margin: 30px 0; padding: 22px;
  background: linear-gradient(135deg, var(--panel), rgba(46,230,200,0.05));
  border: 1.5px solid var(--cyan); border-radius: 16px;
  box-shadow: 0 12px 40px rgba(46,230,200,0.10);
}
.activity-head { margin-bottom: 14px; }
.activity-kicker { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: var(--cyan); }
.activity-title { font-family: 'Space Grotesk', sans-serif; font-size: 19px; font-weight: 700; color: var(--cyan-2); margin: 4px 0 6px; }
.activity-desc { font-size: 14.5px; color: var(--ink); line-height: 1.6; }
.activity-panel { padding: 14px 16px 16px; margin: 14px 0; background: rgba(0,0,0,0.28); border: 1px solid var(--line); border-radius: 12px; }
.activity-panel-label { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .10em; margin-bottom: 10px; }

/* === Ch1 · "Strip the Harness" — toggle-and-observe === */
.sh-scenario { font-size: 14px; color: var(--ink-dim); line-height: 1.65; }
.sh-scenario b { color: var(--cyan-2); }

.sh-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.sh-chip {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px; min-width: 162px;
  background: var(--panel-2); border: 2px solid var(--green); border-radius: 12px;
  color: var(--ink); cursor: pointer; font: inherit; transition: all .15s ease;
}
.sh-chip:hover { transform: translateY(-1px); }
.sh-led { width: 13px; height: 13px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px rgba(52,211,153,0.9); flex-shrink: 0; transition: all .15s ease; }
.sh-name { font-weight: 600; font-size: 14px; }
.sh-en { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--ink-faint); margin-left: auto; }
.sh-chip.off { border-color: var(--red); background: rgba(251,113,133,0.10); }
.sh-chip.off .sh-led { background: #2a2f3a; box-shadow: none; }
.sh-chip.off .sh-name { color: var(--ink-dim); text-decoration: line-through; text-decoration-color: rgba(251,113,133,0.6); }

.sh-outcome { margin-top: 6px; }
.sh-status { display: flex; align-items: center; gap: 10px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 16.5px; padding: 12px 16px; border-radius: 12px; }
.sh-status.ok  { color: var(--green); background: rgba(52,211,153,0.10); border: 1px solid rgba(52,211,153,0.4); }
.sh-status.bad { color: var(--red);   background: rgba(251,113,133,0.10); border: 1px solid rgba(251,113,133,0.4); }
.sh-broken { list-style: none; padding: 0; margin: 12px 0 0; }
.sh-broken li { padding: 9px 12px; margin-bottom: 7px; background: rgba(251,113,133,0.07); border-left: 3px solid var(--red); border-radius: 8px; font-size: 13.5px; line-height: 1.55; }
.sh-broken li b { color: #fff; }
.sh-reset { margin-top: 14px; padding: 8px 18px; background: transparent; border: 1.5px solid var(--line-2); color: var(--ink-dim); font: inherit; font-size: 13px; border-radius: 99px; cursor: pointer; transition: all .15s ease; }
.sh-reset:hover { border-color: var(--cyan); color: var(--cyan-2); }

/* === Generic: toggle-and-observe (Ch2 prompt-and-pray, Ch3 verify-loop, reusable) === */
.tg-list { display: flex; flex-direction: column; gap: 8px; margin: 4px 0 6px; }
.tg-row {
  display: flex; align-items: center; gap: 12px; padding: 10px 14px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 11px; cursor: pointer;
  font: inherit; color: var(--ink); text-align: left; transition: border-color .14s ease, background .14s ease;
}
.tg-row:hover { border-color: var(--line-2); }
.tg-row .tg-txt { flex: 1; font-size: 14px; line-height: 1.5; }
.tg-row .tg-txt small { display: block; color: var(--ink-faint); font-size: 12px; }
.tg-sw {
  flex-shrink: 0; width: 46px; height: 25px; border-radius: 99px; position: relative;
  background: #2a2f3a; border: 1px solid var(--line-2); transition: background .15s ease;
}
.tg-sw::after {
  content: ''; position: absolute; top: 2px; left: 2px; width: 19px; height: 19px; border-radius: 50%;
  background: var(--ink-dim); transition: transform .15s ease, background .15s ease;
}
.tg-row.on .tg-sw { background: var(--cyan-soft); border-color: var(--cyan); }
.tg-row.on .tg-sw::after { transform: translateX(21px); background: var(--cyan); }
.tg-row.on { border-color: rgba(46,230,200,0.4); background: rgba(46,230,200,0.05); }
/* danger variant: ON = a fault injected (turns amber/red instead of cyan) */
.tg-row.danger.on { border-color: rgba(251,113,133,0.45); background: rgba(251,113,133,0.07); }
.tg-row.danger.on .tg-sw { background: rgba(251,113,133,0.18); border-color: var(--red); }
.tg-row.danger.on .tg-sw::after { background: var(--red); }

.tg-out { margin-top: 12px; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--line); background: rgba(0,0,0,0.28); }
.tg-status { display: flex; align-items: center; gap: 10px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 16px; }
.tg-out.ok  { border-color: rgba(52,211,153,0.4);  background: rgba(52,211,153,0.08); }
.tg-out.ok  .tg-status { color: var(--green); }
.tg-out.bad { border-color: rgba(251,113,133,0.4); background: rgba(251,113,133,0.08); }
.tg-out.bad .tg-status { color: var(--red); }
.tg-trace { list-style: none; padding: 0; margin: 12px 0 0; font-family: 'JetBrains Mono', monospace; font-size: 12.5px; }
.tg-trace li { padding: 7px 11px; margin-bottom: 6px; border-radius: 7px; border-left: 3px solid var(--line-2); background: rgba(255,255,255,0.02); line-height: 1.5; }
.tg-trace li.ok   { border-left-color: var(--green); color: var(--cyan-2); }
.tg-trace li.bad  { border-left-color: var(--red);   color: #ffc4cd; background: rgba(251,113,133,0.06); }
.tg-trace li.warn { border-left-color: var(--amber); color: #ffe2a6; }
.tg-trace li.muted{ color: var(--ink-faint); }
.tg-trace li b { color: #fff; }
.tg-ground { margin-top: 10px; padding: 11px 14px; border-radius: 10px; border: 1px dashed var(--amber); background: rgba(251,191,36,0.06); font-size: 13px; color: #ffe2a6; }
.tg-ground b { color: #fff; }

/* === Generic: sort-into-buckets (Ch1 map-the-job, reusable Ch11/15/17) === */
.sib { margin-top: 4px; }
.sib-traylabel, .sib-bucket h5 { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-faint); margin: 0 0 9px; }
.sib-tray { display: flex; flex-wrap: wrap; gap: 9px; min-height: 20px; margin-bottom: 8px; }
.sib-card {
  display: inline-flex; align-items: center; gap: 9px; padding: 10px 14px; max-width: 100%;
  background: var(--panel-2); border: 1.5px solid var(--line-2); border-radius: 11px;
  color: var(--ink); cursor: pointer; font: inherit; font-size: 13.5px; line-height: 1.4;
  transition: transform .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.sib-card:hover { transform: translateY(-1px); border-color: var(--cyan); }
.sib-card.sel { border-color: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-soft); }
.sib-card.correct { border-color: var(--green); background: rgba(52,211,153,0.08); }
.sib-card.wrong   { border-color: var(--red);   background: rgba(251,113,133,0.08); }
.sib-card .sib-v { display: block; width: 100%; margin-top: 5px; font-family: 'Sarabun', sans-serif; font-size: 12px; line-height: 1.45; color: var(--ink-dim); }
.sib-buckets { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 6px 0 4px; }
@media (max-width: 640px) { .sib-buckets { grid-template-columns: 1fr; } }
.sib-bucket { padding: 13px 14px; border: 1.5px dashed var(--line-2); border-radius: 13px; background: rgba(0,0,0,0.2); min-height: 96px; transition: border-color .14s ease, background .14s ease; }
.sib-bucket.armed { border-color: var(--cyan); background: var(--cyan-soft); }
.sib-bucket .drop { display: flex; flex-direction: column; gap: 8px; }
.sib-hint { margin-top: 8px; font-size: 13px; }
.sib-actions { display: flex; gap: 10px; align-items: center; margin-top: 14px; flex-wrap: wrap; }
.sib-btn { padding: 8px 18px; border-radius: 99px; font: inherit; font-size: 13.5px; cursor: pointer; border: 1.5px solid var(--cyan); background: var(--cyan-soft); color: var(--cyan-2); transition: all .14s ease; }
.sib-btn:hover { background: rgba(46,230,200,0.18); }
.sib-btn.ghost { border-color: var(--line-2); background: transparent; color: var(--ink-dim); }
.sib-btn.ghost:hover { border-color: var(--cyan); color: var(--cyan-2); }
.sib-banner { margin-top: 14px; padding: 13px 16px; border-radius: 12px; border: 1px solid var(--green); background: rgba(52,211,153,0.10); color: var(--cyan-2); font-size: 14px; line-height: 1.6; display: none; }
.sib-banner.show { display: block; }
.sib-banner b { color: #fff; }
.sib-tally { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--ink-dim); }

/* === Generic: before-after-rewrite with live confidence bars (Ch4) === */
.rw-req { padding: 11px 15px; margin-bottom: 14px; background: rgba(46,230,200,0.06); border: 1px solid rgba(46,230,200,0.3); border-radius: 10px; font-size: 14px; }
.rw-req b { color: var(--cyan-2); }
.rw-cards { display: flex; flex-direction: column; gap: 12px; }
.rw-card { padding: 12px 14px; background: var(--panel-2); border: 1.5px solid var(--line); border-radius: 12px; transition: border-color .15s ease; }
.rw-card.win { border-color: var(--cyan); box-shadow: 0 0 0 2px var(--cyan-soft); }
.rw-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.rw-name { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--cyan-2); }
.rw-pick { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 10px; padding: 2px 9px; border-radius: 99px; border: 1px solid var(--line-2); color: var(--ink-faint); }
.rw-card.win .rw-pick { border-color: var(--cyan); color: #06231d; background: var(--cyan); }
.rw-ta { width: 100%; box-sizing: border-box; background: var(--code-bg); color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-family: 'Sarabun', sans-serif; font-size: 13px; line-height: 1.5; resize: vertical; min-height: 46px; }
.rw-ta:focus { outline: none; border-color: var(--cyan); }
.rw-track { height: 9px; margin-top: 9px; background: #20242c; border-radius: 99px; overflow: hidden; }
.rw-fill { height: 100%; width: 33%; background: linear-gradient(90deg, var(--cyan), var(--cyan-2)); border-radius: 99px; transition: width .25s ease; }
.rw-pct { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-dim); margin-top: 4px; }
.rw-note { margin-top: 12px; padding: 10px 14px; border-radius: 10px; border: 1px dashed var(--cyan); background: var(--cyan-soft); font-size: 13px; color: var(--cyan-2); }

/* === Memory: "Survive the Compaction" simulate-and-predict (Ch6) === */
.cmp-grid { display: grid; grid-template-columns: 80px 1fr; gap: 16px; align-items: start; }
@media (max-width: 600px) { .cmp-grid { grid-template-columns: 60px 1fr; } }
.cmp-barwrap { text-align: center; }
.cmp-bar { height: 280px; width: 100%; border: 1.5px solid var(--line-2); border-radius: 10px; background: rgba(0,0,0,0.3); display: flex; flex-direction: column-reverse; overflow: hidden; position: relative; }
.cmp-bar.over { border-color: var(--red); box-shadow: 0 0 0 2px rgba(251,113,133,0.3); }
.cmp-seg { width: 100%; border-top: 1px solid rgba(0,0,0,0.4); font-family: 'JetBrains Mono', monospace; font-size: 9px; color: rgba(255,255,255,0.7); display: flex; align-items: center; justify-content: center; transition: height .3s ease; overflow: hidden; }
.cmp-cap { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--ink-faint); margin-top: 6px; }
.cmp-cards { display: flex; flex-direction: column; gap: 8px; }
.cmp-card { display: flex; align-items: center; gap: 9px; padding: 9px 12px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }
.cmp-card.cleared { opacity: .4; text-decoration: line-through; }
.cmp-card .cmp-txt { flex: 1; line-height: 1.4; }
.cmp-card .cmp-cost { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--ink-faint); }
.cmp-tog { font: inherit; font-size: 11px; padding: 3px 9px; border-radius: 99px; cursor: pointer; border: 1px solid var(--line-2); background: transparent; color: var(--ink-dim); }
.cmp-tog.on { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-soft); }
.cmp-tog.clr.on { border-color: var(--amber); color: var(--amber); background: rgba(251,191,36,0.1); }
.cmp-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; align-items: center; }
.cmp-compact { padding: 8px 18px; border-radius: 99px; font: inherit; font-size: 13.5px; cursor: pointer; border: 1.5px solid var(--red); background: rgba(251,113,133,0.1); color: #ffc4cd; }
.cmp-compact:disabled { opacity: .4; cursor: not-allowed; border-color: var(--line-2); color: var(--ink-faint); background: transparent; }
.cmp-compact.ready { animation: cmpPulse 1.1s ease-in-out infinite; }
@keyframes cmpPulse { 0%,100% { box-shadow: 0 0 0 0 rgba(251,113,133,0.4); } 50% { box-shadow: 0 0 0 6px rgba(251,113,133,0); } }
.cmp-ext { margin-top: 14px; padding: 12px 15px; border: 1px solid var(--green); border-radius: 12px; background: rgba(52,211,153,0.06); }
.cmp-ext h5 { margin: 0 0 8px; font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--green); }
.cmp-ext ul { margin: 0; padding-left: 18px; font-size: 13px; }
.cmp-ext li { margin-bottom: 4px; }
.cmp-quiz { margin-top: 14px; padding: 12px 15px; border-radius: 12px; border: 1px solid var(--line-2); background: rgba(0,0,0,0.25); }
.cmp-quiz .q { font-weight: 600; margin-bottom: 8px; }
.cmp-quiz .a { padding: 8px 12px; border-radius: 9px; font-size: 13.5px; line-height: 1.5; }
.cmp-quiz .a.ok  { color: var(--green); background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.35); }
.cmp-quiz .a.bad { color: var(--red);   background: rgba(251,113,133,0.1); border: 1px solid rgba(251,113,133,0.35); }

/* === Decision-game: "Catch the Lie" (Ch7) === */
.cl-claim { padding: 13px 16px; border-radius: 11px; border: 1px solid var(--line-2); background: var(--panel-2); font-size: 15px; margin-bottom: 12px; }
.cl-claim .who { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--cyan); display: block; margin-bottom: 4px; }
.cl-sources { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 560px) { .cl-sources { grid-template-columns: 1fr; } }
.cl-src { padding: 11px 14px; border-radius: 10px; border: 1.5px solid var(--line-2); background: var(--panel-2); color: var(--ink); font: inherit; font-size: 13.5px; text-align: left; cursor: pointer; transition: all .14s ease; }
.cl-src:hover { border-color: var(--cyan); transform: translateY(-1px); }
.cl-src:disabled { opacity: .5; cursor: default; transform: none; }
.cl-verdict { margin-top: 12px; padding: 12px 15px; border-radius: 11px; font-size: 14px; line-height: 1.55; display: none; }
.cl-verdict.show { display: block; }
.cl-verdict.yes { border: 1px solid var(--green); background: rgba(52,211,153,0.1); color: var(--cyan-2); }
.cl-verdict.partial { border: 1px solid var(--amber); background: rgba(251,191,36,0.08); color: #ffe2a6; }
.cl-verdict.no { border: 1px solid var(--red); background: rgba(251,113,133,0.1); color: #ffc4cd; }
.cl-strength { margin-top: 10px; }
.cl-strength .lab { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-dim); margin-bottom: 4px; }
.cl-strack { height: 8px; background: #20242c; border-radius: 99px; overflow: hidden; }
.cl-sfill { height: 100%; width: 0; border-radius: 99px; transition: width .35s ease, background .35s ease; }
.cl-foot { display: flex; align-items: center; gap: 14px; margin-top: 14px; flex-wrap: wrap; }
.cl-score { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--ink-dim); }

/* === Manifest board: "Flip the Manifest & Set the Gate" (Ch8) === */
.fm-rows { display: flex; flex-direction: column; gap: 7px; }
.fm-row { display: flex; align-items: center; gap: 10px; padding: 9px 13px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; }
.fm-name { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; flex: 1; }
.fm-tag { font-family: 'JetBrains Mono', monospace; font-size: 9.5px; padding: 2px 8px; border-radius: 99px; text-transform: uppercase; letter-spacing: .05em; }
.fm-tag.read { color: var(--green); border: 1px solid rgba(52,211,153,0.4); }
.fm-tag.write { color: var(--amber); border: 1px solid rgba(251,191,36,0.4); }
.fm-tag.irrev { color: var(--red); border: 1px solid rgba(251,113,133,0.45); }
.fm-en, .fm-gate { font: inherit; font-size: 11px; padding: 3px 10px; border-radius: 99px; cursor: pointer; border: 1px solid var(--line-2); background: transparent; color: var(--ink-dim); white-space: nowrap; }
.fm-en.on { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-soft); }
.fm-gate.on { border-color: var(--green); color: var(--green); background: rgba(52,211,153,0.1); }
.fm-gate.hidden { visibility: hidden; }
.fm-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
@media (max-width: 600px) { .fm-panels { grid-template-columns: 1fr; } }
.fm-panel { padding: 11px 14px; border-radius: 11px; border: 1px solid var(--line); background: rgba(0,0,0,0.25); }
.fm-panel h5 { margin: 0 0 8px; font-family: 'JetBrains Mono', monospace; font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-faint); }
.fm-cap { font-size: 12.5px; line-height: 1.7; }
.fm-blast { height: 12px; background: #20242c; border-radius: 99px; overflow: hidden; margin-top: 6px; }
.fm-bfill { height: 100%; width: 0; border-radius: 99px; transition: width .3s ease, background .3s ease; }
.fm-scen { display: flex; flex-direction: column; gap: 7px; margin-top: 14px; }
.fm-scen button { font: inherit; font-size: 13px; text-align: left; padding: 9px 13px; border-radius: 9px; border: 1px solid var(--line-2); background: var(--panel-2); color: var(--ink); cursor: pointer; }
.fm-scen button:hover { border-color: var(--cyan); }
.fm-trace { margin-top: 12px; padding: 12px 15px; border-radius: 11px; border: 1px solid var(--line); background: rgba(0,0,0,0.28); display: none; }
.fm-trace.show { display: block; }
.fm-trace ul { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.fm-trace li { padding: 6px 0; border-bottom: 1px solid var(--line); line-height: 1.5; }
.fm-trace li:last-child { border-bottom: none; }

/* === Trace debugger: "Debug From The Trace" (Ch9) === */
.dt-cols { display: grid; grid-template-columns: 1fr; gap: 14px; }
.dt-pane h5 { margin: 0 0 8px; font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--ink-faint); }
.dt-flat { font-family: 'JetBrains Mono', monospace; font-size: 11px; max-height: 280px; overflow-y: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--code-bg); }
.dt-line { padding: 5px 10px; border-bottom: 1px solid rgba(255,255,255,0.04); color: var(--ink-dim); cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dt-line:hover { background: rgba(255,255,255,0.03); }
.dt-line.err { color: #ffb3bd; }
.dt-line.wrong { background: rgba(251,113,133,0.18); }
.dt-line.right { background: rgba(52,211,153,0.18); color: var(--cyan-2); }
.dt-tree { border: 1px solid var(--line); border-radius: 10px; background: rgba(0,0,0,0.25); padding: 10px 12px; display: none; }
.dt-tree.show { display: block; }
.dt-tree ul { list-style: none; margin: 0; padding-left: 16px; }
.dt-tree > ul { padding-left: 0; }
.dt-span { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 7px; cursor: pointer; font-size: 12.5px; }
.dt-span:hover { background: rgba(255,255,255,0.03); }
.dt-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.dt-dot.ok { background: var(--green); } .dt-dot.err { background: var(--red); } .dt-dot.run { background: var(--amber); }
.dt-span.rootcause { box-shadow: 0 0 0 1.5px var(--red); }
.dt-intent { color: var(--ink-faint); font-family: 'Sarabun', sans-serif; font-size: 11.5px; }
.dt-dur { margin-left: auto; height: 5px; background: var(--cyan); border-radius: 99px; opacity: .5; }
.dt-foot { margin-top: 12px; }
.dt-board { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--ink-dim); margin-top: 8px; }

/* === 3-way sort + reveal stamps: "Who's in Control?" (Ch11) === */
.wc-buckets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 6px 0; }
@media (max-width: 640px) { .wc-buckets { grid-template-columns: 1fr; } }
.wc-card-stamp { display: inline-block; margin-left: 6px; font-family: 'JetBrains Mono', monospace; font-size: 9px; padding: 1px 6px; border-radius: 99px; background: rgba(95,101,112,0.25); color: var(--ink-faint); border: 1px solid var(--line-2); }
.wc-link { margin-top: 10px; padding: 10px 13px; border-radius: 10px; border: 1px dashed var(--amber); background: rgba(251,191,36,0.06); font-size: 12.5px; color: #ffe2a6; line-height: 1.55; display: none; }
.wc-link.show { display: block; }

/* === Slider meter: "Context Tax Meter" (Ch12) / reusable (Ch13) === */
.tm-controls { display: flex; flex-direction: column; gap: 12px; margin-bottom: 8px; }
.tm-slider-row label { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--ink-dim); display: block; margin-bottom: 6px; }
.tm-slider-row input[type=range] { width: 100%; accent-color: var(--cyan); }
.tm-toggles { display: flex; flex-wrap: wrap; gap: 8px; }
.tm-tog { font: inherit; font-size: 12.5px; padding: 7px 14px; border-radius: 99px; cursor: pointer; border: 1.5px solid var(--line-2); background: var(--panel-2); color: var(--ink-dim); }
.tm-tog.on { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-soft); }
.tm-run { font: inherit; font-size: 12.5px; padding: 7px 16px; border-radius: 99px; cursor: pointer; border: 1.5px solid var(--violet); background: rgba(167,139,250,0.12); color: var(--violet); }
.tm-meter { margin-top: 8px; }
.tm-bar-row { margin: 12px 0; }
.tm-bar-lab { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 5px; }
.tm-bar-lab b { font-family: 'JetBrains Mono', monospace; color: var(--cyan-2); }
.tm-track { height: 16px; background: #181b22; border: 1px solid var(--line); border-radius: 99px; overflow: hidden; }
.tm-fill { height: 100%; width: 0; border-radius: 99px; transition: width .4s ease, background .4s ease; }
.tm-note { margin-top: 10px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--cyan); background: var(--cyan-soft); font-size: 13px; color: var(--cyan-2); }
.tm-pin { margin-top: 8px; font-size: 12.5px; color: var(--ink-faint); }
.tm-stages { display: flex; gap: 8px; margin-top: 6px; flex-wrap: wrap; }
.tm-stage { flex: 1; min-width: 120px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel-2); font-size: 12px; opacity: .45; transition: all .2s ease; }
.tm-stage.active { opacity: 1; border-color: var(--cyan); background: var(--cyan-soft); }
.tm-stage b { display: block; font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--cyan); margin-bottom: 3px; }

/* === Needle in the Haystack (Ch13) === */
.nh-canvas { width: 100%; height: 150px; display: block; background: rgba(0,0,0,0.3); border: 1px solid var(--line); border-radius: 10px; }
.nh-meter-lab { display: flex; justify-content: space-between; font-size: 12.5px; margin: 12px 0 5px; }
.nh-meter-lab b { font-family: 'JetBrains Mono', monospace; }
.nh-track { height: 16px; background: #181b22; border: 1px solid var(--line); border-radius: 99px; overflow: hidden; }
.nh-fill { height: 100%; width: 0; border-radius: 99px; transition: width .3s ease, background .3s ease; }
.nh-ctrl { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.nh-ctrl label { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--ink-dim); display: block; margin-bottom: 5px; }
.nh-ctrl input[type=range] { width: 100%; accent-color: var(--cyan); }
.nh-sizes { display: flex; gap: 7px; flex-wrap: wrap; }
.nh-size { font: inherit; font-size: 12px; padding: 6px 13px; border-radius: 99px; cursor: pointer; border: 1.5px solid var(--line-2); background: var(--panel-2); color: var(--ink-dim); }
.nh-size.on { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-soft); }
.nh-predict { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.nh-predict input[type=number] { width: 70px; background: var(--code-bg); color: var(--ink); border: 1px solid var(--line); border-radius: 7px; padding: 6px 8px; font: inherit; }
.nh-note { margin-top: 10px; font-size: 13px; color: var(--ink-dim); }
.nh-windowbar { height: 9px; background: #181b22; border: 1px solid var(--line); border-radius: 99px; overflow: hidden; margin-top: 6px; }
.nh-windowfill { height: 100%; background: var(--violet); width: 0; border-radius: 99px; transition: width .3s ease; }

/* === Cut an Edge: lethal trifecta (Ch14) === */
.ce-stage { position: relative; height: 260px; margin: 6px 0 10px; }
.ce-svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.ce-node { position: absolute; width: 165px; padding: 11px 13px; border-radius: 12px; border: 1.5px solid var(--line-2); background: var(--panel-2); text-align: center; }
.ce-node.off { opacity: .4; border-style: dashed; }
.ce-node .t { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--cyan); text-transform: uppercase; letter-spacing: .05em; }
.ce-node .d { font-size: 12px; color: var(--ink-dim); margin-top: 3px; }
.ce-node label { display: flex; align-items: center; gap: 6px; justify-content: center; margin-top: 7px; font-size: 12px; cursor: pointer; }
.ce-p1 { top: 0; left: 50%; transform: translateX(-50%); }
.ce-p2 { bottom: 0; left: 4%; }
.ce-p3 { bottom: 0; right: 4%; }
.ce-banner { padding: 13px 16px; border-radius: 12px; font-size: 14.5px; font-weight: 600; text-align: center; }
.ce-banner.armed { border: 1px solid var(--red); background: rgba(251,113,133,0.12); color: #ffc4cd; }
.ce-banner.safe { border: 1px solid var(--green); background: rgba(52,211,153,0.1); color: var(--cyan-2); }
.ce-conseq { margin-top: 10px; padding: 10px 14px; border-radius: 10px; background: rgba(0,0,0,0.25); border: 1px solid var(--line); font-size: 13px; line-height: 1.55; }
.ce-decoy { margin-top: 12px; padding: 10px 14px; border: 1px dashed var(--line-2); border-radius: 10px; }
.ce-decoy label { display: flex; align-items: center; gap: 8px; font-size: 13px; cursor: pointer; }
.ce-decoy .tip { margin-top: 7px; font-size: 12.5px; color: var(--amber); display: none; }
.ce-decoy .tip.show { display: block; }

/* === Pick the Right Rung (Ch15) — reuses .sib-* with 4 buckets + cost meter === */
.pr-buckets { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 6px 0; }
@media (max-width: 760px) { .pr-buckets { grid-template-columns: repeat(2, 1fr); } }
.pr-meter-lab { display: flex; justify-content: space-between; font-size: 12.5px; margin: 14px 0 5px; }
.pr-track { height: 14px; background: #181b22; border: 1px solid var(--line); border-radius: 99px; overflow: hidden; }
.pr-fill { height: 100%; width: 20%; border-radius: 99px; transition: width .3s ease, background .3s ease; background: linear-gradient(90deg,var(--green),#5eead4); }

/* === Grade the Agent (Ch16) === */
.ga-run { padding: 14px 16px; margin-bottom: 14px; border: 1px solid var(--line); border-radius: 13px; background: var(--panel-2); }
.ga-run h4 { margin: 0 0 8px; font-size: 16px; }
.ga-run ol { margin: 8px 0; padding-left: 22px; font-size: 13.5px; }
.ga-run ol li { margin-bottom: 4px; font-family: 'JetBrains Mono', monospace; font-size: 12.5px; }
.ga-final { padding: 9px 13px; border-left: 3px solid var(--cyan); background: rgba(46,230,200,0.05); border-radius: 6px; font-size: 13.5px; margin: 8px 0; }
.ga-levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 10px; }
@media (max-width: 600px) { .ga-levels { grid-template-columns: 1fr; } }
.ga-level { padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px; }
.ga-level .lv { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--ink-dim); margin-bottom: 6px; }
.ga-opt { display: inline-flex; gap: 4px; }
.ga-opt button { font: inherit; font-size: 12px; padding: 4px 11px; border-radius: 99px; cursor: pointer; border: 1px solid var(--line-2); background: transparent; color: var(--ink-dim); }
.ga-opt button.sel { border-color: var(--cyan); color: var(--cyan); background: var(--cyan-soft); }
.ga-opt button.correct { border-color: var(--green); color: var(--green); background: rgba(52,211,153,0.12); }
.ga-opt button.wrong { border-color: var(--red); color: var(--red); background: rgba(251,113,133,0.12); }
.ga-rationale { margin-top: 8px; font-size: 12.5px; color: var(--ink-dim); display: none; line-height: 1.5; }
.ga-rationale.show { display: block; }

/* === Safety Envelope (Ch18) === */
.se-pipe { display: flex; align-items: stretch; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.se-stage { flex: 1 1 90px; min-width: 84px; padding: 11px; border-radius: 10px; border: 1.5px solid var(--line-2); background: var(--panel-2); text-align: center; font-size: 12.5px; }
.se-stage .k { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--cyan); text-transform: uppercase; display: block; margin-bottom: 3px; }
.se-stage.gate { border-color: var(--amber); } .se-stage.gate .k { color: var(--amber); }
.se-stage.blocked { border-color: var(--red); background: rgba(251,113,133,0.1); }
.se-stage.teleop { border-color: var(--violet); background: rgba(167,139,250,0.1); } .se-stage.teleop .k { color: var(--violet); }
.se-arrow { align-self: center; color: var(--cyan); font-family: 'JetBrains Mono', monospace; font-weight: 700; }

/* === Autonomy Dial (Ch19) === */
.ad-dial { margin: 10px 0; }
.ad-dial input[type=range] { width: 100%; accent-color: var(--cyan); }
.ad-ticks { display: flex; justify-content: space-between; font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--ink-faint); margin-top: 4px; }
.ad-ticks span { flex: 1; text-align: center; }
.ad-ticks span.on { color: var(--cyan); font-weight: 700; }
.ad-card { margin-top: 14px; padding: 14px 16px; border: 1px solid var(--cyan); border-radius: 12px; background: var(--cyan-soft); }
.ad-card h4 { margin: 0 0 6px; font-size: 17px; color: var(--cyan-2); }
.ad-card .role { font-size: 13.5px; line-height: 1.6; }
.ad-trust { margin-top: 14px; }
.ad-trust .lab { font-size: 12.5px; color: var(--ink-dim); margin-bottom: 5px; }
.ad-trustbar { height: 30px; border-radius: 8px; overflow: hidden; display: flex; border: 1px solid var(--line); }
.ad-zone { flex: 1; display: flex; align-items: center; justify-content: center; font-size: 11px; font-family: 'JetBrains Mono', monospace; color: rgba(255,255,255,0.5); }
.ad-zone.under { background: rgba(251,191,36,0.15); } .ad-zone.cal { background: rgba(52,211,153,0.18); } .ad-zone.over { background: rgba(251,113,133,0.15); }
.ad-zone.hot { color: #fff; font-weight: 700; box-shadow: inset 0 0 0 2px currentColor; }
.ad-note { margin-top: 10px; padding: 10px 14px; border-radius: 10px; background: rgba(0,0,0,0.25); border: 1px solid var(--line); font-size: 13px; line-height: 1.55; }

/* === Clip the Senses onto the Loop (Ch20) === */
.cs-board { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 8px 0; }
@media (max-width: 640px) { .cs-board { grid-template-columns: 1fr; } }
.cs-core { grid-column: 1 / -1; display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; padding: 16px; border: 2px solid var(--cyan); border-radius: 14px; background: rgba(46,230,200,0.05); }
.cs-core.pulsebad { animation: csbad .4s ease; }
@keyframes csbad { 0%,100%{box-shadow:none} 50%{box-shadow:0 0 0 4px rgba(251,113,133,0.4)} }
.cs-slot { min-width: 96px; padding: 10px 12px; border: 1.5px dashed var(--line-2); border-radius: 10px; text-align: center; font-size: 12px; color: var(--ink-dim); background: var(--panel-2); }
.cs-slot.armed { border-color: var(--cyan); background: var(--cyan-soft); }
.cs-slot.filled { border-style: solid; border-color: var(--green); color: var(--ink); }
.cs-slot .sk { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--ink-faint); display: block; }
.cs-loopbox { font-family: 'Space Grotesk', sans-serif; font-weight: 700; color: var(--cyan-2); padding: 8px 16px; border: 1.5px solid var(--cyan); border-radius: 10px; }
.cs-tray { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.cs-chip { padding: 9px 13px; border-radius: 10px; border: 1.5px solid var(--line-2); background: var(--panel-2); color: var(--ink); cursor: pointer; font: inherit; font-size: 13px; }
.cs-chip.sel { border-color: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-soft); }
.cs-chip.harness { border-left: 3px solid var(--cyan); }
.cs-chip.sense { border-left: 3px solid var(--violet); }
.cs-chip.used { opacity: .4; pointer-events: none; }
.cs-checklist { margin-top: 12px; padding: 12px 15px; border: 1px solid var(--line); border-radius: 12px; background: rgba(0,0,0,0.22); }
.cs-checklist .row { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 3px 0; color: var(--ink-dim); }
.cs-checklist .row.done { color: var(--green); }
.cs-checklist .row .bx { width: 16px; }
.cs-spec { margin-top: 14px; display: none; }
.cs-spec.show { display: block; }
.cs-spec pre { white-space: pre-wrap; }