/* Moto Zero · Circuit Builder (wiring/). Uses the site tokens from styles.css: sharp edges, 1 px rules. */
.cb-sec { max-width: 1320px; margin: 0 auto; padding: 48px 24px 56px; border-top: 1px solid var(--line); }
.cb-sec .cb-head h2 { font-size: clamp(26px, 3vw, 36px); margin: 6px 0 10px; }
.cb-sec .cb-head p { max-width: 820px; font-size: 16.5px; }
.cb-root {
  --cb-paper: #FFFFFF; --cb-wire: #1E2B5E; --cb-live: #C2502A; --cb-ok: #1E7A4A; --cb-amber: #E2A93B;
  margin-top: 18px; font-size: 14.5px; color: var(--ink-soft);
}
.cb-root button { font: 600 13px/1.1 var(--sans); color: var(--ink); touch-action: manipulation; }
.cb-btn { padding: 9px 12px; min-height: 38px; border: 1px solid var(--ink); background: #FFF; cursor: pointer; }
.cb-btn:hover { background: var(--paper-2); }
.cb-btn:disabled { opacity: .4; cursor: default; }
.cb-btn:focus-visible, .cb-root [data-pal]:focus-visible, .cb-chal-list button:focus-visible { outline: 2px solid var(--warm); outline-offset: 2px; }
.cb-power { background: var(--go); border-color: var(--go-press); color: #FFF !important; min-width: 190px; }
.cb-power:hover { background: var(--go-press); }
.cb-power.is-on { background: var(--warm); border-color: var(--warm); }
.cb-bar { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 10px; background: #FFF; border: 1px solid var(--line); }
.cb-bar .cb-gap { flex: 1 1 0; }
.cb-sel { display: inline-flex; align-items: center; gap: 6px; font: 600 13px/1 var(--sans); }
.cb-root select, .cb-root input[type=number], .cb-root input[type=text] { font: 14px/1.2 var(--sans); padding: 7px 8px; border: 1px solid var(--line); background: #FFF; color: var(--ink); min-height: 36px; max-width: 100%; }
.cb-main { display: grid; grid-template-columns: 168px minmax(0, 1fr) 300px; gap: 12px; margin-top: 12px; align-items: start; }
.cb-palette { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; background: #FFF; border: 1px solid var(--line); padding: 6px; }
.cb-palette button { display: flex; flex-direction: column; align-items: center; gap: 1px; padding: 4px 2px 5px; border: 1px solid var(--line-soft); background: #FFF; cursor: pointer; min-height: 44px; }
.cb-palette button:hover { border-color: var(--ink); }
.cb-palette button[aria-pressed="true"] { border-color: var(--warm); background: #FDF0EA; box-shadow: inset 0 0 0 1px var(--warm); }
.cb-palette svg { width: 52px; height: 22px; overflow: visible; }
.cb-palette button span { font: 600 10.5px/1.1 var(--sans); text-align: center; }
.cb-stage { min-width: 0; }
.cb-boardwrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); background: #FFF; }
.cb-board { position: relative; min-width: 620px; }
.cb-board svg { display: block; width: 100%; height: auto; user-select: none; -webkit-user-select: none; touch-action: pan-x pan-y; }
.cb-grid circle { fill: #B9CDE4; }
.cb-status { margin: 10px 0 0; padding: 10px 12px; border-left: 4px solid var(--ink); background: #F6F6F6; font-size: 14.5px; min-height: 44px; }
.cb-status.is-warn { border-left-color: var(--warm); background: #FDF0EA; }
.cb-status.is-ok { border-left-color: var(--cb-ok); background: #EAF5EF; }
.cb-swipe { display: none; margin: 4px 0 0; font-size: 12.5px; color: var(--mute); }
@media (max-width: 680px) { .cb-swipe { display: block; } }
.cb-help { margin: 6px 0 0; font-size: 13px; color: var(--mute); }
.cb-tip { position: absolute; pointer-events: none; background: var(--ink); color: #FFF; font: 500 12.5px/1.35 var(--sans); padding: 5px 8px; white-space: nowrap; z-index: 2; }
.cb-tip b { font-weight: 700; }

/* board drawing */
.cb-lead, .cb-plate, .cb-blade, .cb-arrow, .cb-link, .cb-burnt { fill: none; stroke: #0A0A0A; stroke-width: 2; stroke-linecap: round; }
.cb-thick { stroke-width: 4.5; }
.cb-plate { stroke-width: 2.5; }
.cb-arrow { stroke-width: 1.6; }
.cb-link { stroke-dasharray: 4 4; stroke-width: 1.4; stroke: #5F6166; }
.cb-blade.is-closed { stroke: var(--cb-live); }
.cb-pin { fill: #FFF; stroke: #0A0A0A; stroke-width: 1.8; }
.cb-box, .cb-meter, .cb-lamp, .cb-tri { fill: #FFF; stroke: #0A0A0A; stroke-width: 2; }
.cb-meter { fill: #F2F6FB; }
.cb-relaybox { fill: none; stroke: #B9CDE4; stroke-dasharray: 3 3; }
.cb-energised { fill: #F6D3C4; stroke: var(--cb-live); }
.cb-blown { fill: #FDE2D8; stroke: var(--cb-live); stroke-dasharray: 4 3; }
.cb-burnt { stroke: var(--cb-live); stroke-width: 2.5; }
.cb-halo { fill: #FFD35A; }
.cb-corr { stroke: #A0521D; }
.cb-rust { fill: rgba(176, 90, 30, .22); stroke: none; }
.cb-wireicon { fill: none; stroke: var(--cb-wire); stroke-width: 4; }
.cb-tx { font: 600 12px/1 var(--sans); fill: #0A0A0A; text-anchor: middle; }
.cb-sym { font-size: 15px; font-weight: 700; }
.cb-pol { font-size: 13px; font-weight: 700; }
.cb-tn { font-size: 10px; fill: #5F6166; text-anchor: start; }
.cb-tn.cb-end { text-anchor: end; }
.cb-hit { fill: transparent; stroke: none; }
.cb-part { cursor: grab; touch-action: none; }
.cb-part:hover .cb-hit { fill: rgba(194, 80, 42, .05); }
.cb-part.is-sel .cb-hit { fill: rgba(194, 80, 42, .08); stroke: var(--cb-live); stroke-width: 1.5; stroke-dasharray: 5 4; }
.cb-buzz { animation: cb-buzz .09s linear infinite alternate; fill: #F6D3C4; }
@keyframes cb-buzz { to { transform: translateX(1.5px); } }
.cb-spin { animation: cb-spin 1s linear infinite; transform-box: fill-box; transform-origin: center; }
@keyframes cb-spin { to { transform: rotate(360deg); } }
.cb-wire { cursor: pointer; }
.cb-whit { fill: none; stroke: transparent; stroke-width: 16; }
.cb-wline { fill: none; stroke: var(--cb-wire); stroke-linejoin: round; stroke-linecap: round; }
.cb-wire.is-live .cb-wline { stroke: #3F4E86; }
.cb-wire.is-warm .cb-wline { stroke: var(--cb-amber); }
.cb-wire.is-over .cb-wline { stroke: var(--cb-live); }
.cb-wire.is-sel .cb-wline { stroke: var(--warm); stroke-dasharray: 8 5; }
.cb-wire:hover .cb-whit { stroke: rgba(194, 80, 42, .12); }
.cb-dot { fill: var(--cb-live); pointer-events: none; }
.cb-lab { font: 600 12px/1 var(--sans); fill: #26282C; pointer-events: none; paint-order: stroke; stroke: #FFF; stroke-width: 4px; stroke-linejoin: round; }
.cb-lab .cb-sub { font-weight: 500; fill: #5F6166; }
.cb-lab .cb-sub.is-bad { fill: var(--cb-live); font-weight: 700; }
.cb-lab.is-instr { font-size: 12.5px; }
.cb-lab .cb-read { font-weight: 700; fill: var(--brand); font-size: 13.5px; }
.cb-term { cursor: crosshair; touch-action: none; }
.cb-thit { fill: transparent; }
.cb-term:hover .cb-thit { fill: rgba(194, 80, 42, .14); }
.cb-tdot { fill: #FFF; stroke: var(--cb-wire); stroke-width: 2; }
.cb-term.is-pend .cb-tdot { fill: var(--cb-live); stroke: var(--cb-live); }
.cb-term.is-pend .cb-thit { fill: rgba(194, 80, 42, .18); }
.cb-rubber { fill: none; stroke: var(--cb-live); stroke-width: 2.5; stroke-dasharray: 6 5; pointer-events: none; }

/* side panel */
.cb-side { background: #FFF; border: 1px solid var(--line); padding: 14px; min-width: 0; }
.cb-eyebrow { font: 600 11px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--warm); margin: 0 0 4px; }
.cb-side h3 { margin: 0 0 10px; font-size: 19px; }
.cb-name { font: 700 18px/1.2 var(--sans) !important; width: 9em; border-color: var(--line-soft) !important; }
.cb-f { display: block; margin: 10px 0; font-weight: 600; font-size: 13.5px; }
.cb-f output { float: right; font-weight: 700; color: var(--ink); }
.cb-f input[type=range] { display: block; width: 100%; margin-top: 6px; accent-color: var(--warm); }
.cb-f select, .cb-f input[type=number] { display: block; width: 100%; margin-top: 5px; }
.cb-f.cb-check { display: flex; gap: 8px; align-items: center; }
.cb-small { font-size: 13px; color: var(--mute); margin: 8px 0; }
.cb-warn { color: var(--warm); font-weight: 700; margin: 8px 0; }
.cb-btnrow { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.cb-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.cb-chip { padding: 6px 8px; border: 1px solid var(--line); background: #FFF; cursor: pointer; min-height: 32px; }
.cb-chip:hover { border-color: var(--ink); }
.cb-hold { background: var(--warm); border-color: var(--warm); color: #FFF !important; min-width: 150px; user-select: none; -webkit-user-select: none; touch-action: none; }
.cb-hold.is-down { filter: brightness(.85); }
.cb-tab { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 10px; }
.cb-tab th, .cb-tab td { text-align: left; padding: 5px 4px; border-top: 1px solid var(--line-soft); vertical-align: top; font-variant-numeric: tabular-nums; }
.cb-tab th { font-weight: 700; color: var(--ink); }
.cb-tab thead th { font: 600 10.5px/1.2 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--mute); border-top: 0; }
.cb-tab small { display: block; color: var(--mute); font-size: 11.5px; }
.cb-live .cb-tab:empty { display: none; }

/* challenges and log */
.cb-lower { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; margin-top: 12px; align-items: start; }
.cb-chal, .cb-log { background: #FFF; border: 1px solid var(--line); padding: 14px; min-width: 0; }
.cb-lower h3 { margin: 0 0 10px; font-size: 19px; display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.cb-score { font: 600 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--mute); }
.cb-chal-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.cb-chal-list button { width: 100%; display: flex; gap: 8px; align-items: center; text-align: left; padding: 8px; border: 1px solid var(--line-soft); background: #FFF; cursor: pointer; min-height: 44px; font-weight: 600; }
.cb-chal-list button:hover { border-color: var(--ink); }
.cb-chal-list button b { flex: none; width: 22px; height: 22px; display: grid; place-items: center; background: var(--ink); color: #FFF; font-size: 12px; }
.cb-chal-list button.is-done b { background: var(--cb-ok); }
.cb-chal-list button.is-on { border-color: var(--warm); box-shadow: inset 0 0 0 1px var(--warm); }
.cb-chal-list button i { margin-left: auto; font: 600 11px/1 var(--mono); font-style: normal; text-transform: uppercase; color: var(--cb-ok); }
.cb-chal-card { margin-top: 12px; }
.cb-card { border-left: 4px solid var(--ink); padding: 4px 0 4px 12px; }
.cb-card.is-pass { border-left-color: var(--cb-ok); }
.cb-card h4 { margin: 0 0 6px; font-size: 17px; }
.cb-card p { margin: 0 0 8px; }
.cb-ind tr.is-ok td:last-child { color: var(--cb-ok); font-weight: 700; }
.cb-ind tr.is-no td:last-child { color: var(--warm); font-weight: 700; }
.cb-ind td:last-child { width: 20px; text-align: center; }
.cb-verdict { font-weight: 700; padding: 8px 10px; margin-top: 10px !important; }
.cb-verdict.is-pass { background: #EAF5EF; color: var(--cb-ok); }
.cb-verdict.is-fail { background: #F6F6F6; color: var(--ink); }
.cb-hint summary { cursor: pointer; font-weight: 700; }
.cb-hint p { margin-top: 6px; }
.cb-note-row { margin: 0 0 8px; }
.cb-note { width: 100%; }
.cb-log-wrap { overflow-x: auto; }
.cb-logtab { min-width: 520px; }
.cb-logtab td small { display: block; color: var(--warm); }
.cb-logtab .cb-state { font-size: 12px; color: var(--mute); min-width: 160px; }
.cb-x { border: 0; background: none; cursor: pointer; color: var(--mute); font-size: 14px; padding: 4px 6px; }

@media (max-width: 1180px) {
  .cb-main { grid-template-columns: 168px minmax(0, 1fr); }
  .cb-side { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .cb-sec { padding: 32px 14px 40px; }
  .cb-lower { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .cb-main { grid-template-columns: minmax(0, 1fr); }
  .cb-palette { display: flex; overflow-x: auto; gap: 4px; -webkit-overflow-scrolling: touch; padding: 4px; }
  .cb-palette button { flex: none; width: 78px; }
  .cb-bar .cb-gap { display: none; }
  .cb-power { flex: 1 1 100%; }
  .cb-chal-list { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { .cb-buzz, .cb-spin { animation: none; } }