/* Layout: sticky top bar with four tabs (Board, Parts, Resistors, Sources); one view shows at a time.
   The board is a blue PCB with gold pads in both themes. Part types each have their own colour (--cat-*). */
:root {
  --bg: #eef1f4; --surface: #ffffff; --surface-2: #f6f8fa; --fg: #18212b; --muted: #5a6776; --line: #d3dae2;
  --accent: #b05a1e; --accent-ink: #ffffff;
  --pcb: #0f4f8c; --pcb-edge: #0a3a68; --silk: #f2f6fa; --pad: #d9ab4f; --pad-on: #ffd36b; --header: #1b1f24;
  --c-pwm: #c2410c; --c-interrupt: #0e7490; --c-serial: #8b4513; --c-i2c: #2563eb; --c-spi: #4d7c0f; --c-analog: #15803d; --c-power: #b91c1c; --c-kit: #475569;
  --cat-display: #c2410c; --cat-sensor: #0e7490; --cat-input: #2563eb; --cat-motor: #a16207; --cat-chip: #475569; --cat-basic: #15803d; --cat-power: #b91c1c;
  --display: "Archivo", "Arial Narrow", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  color-scheme: light;
}
/* Theme: follows the system unless the header switch sets data-theme="light" or "dark" on <html>. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) {
    --bg: #11161c; --surface: #19212a; --surface-2: #1f2832; --fg: #e3e9ef; --muted: #95a3b2; --line: #2b3642;
    --accent: #f08a4b; --accent-ink: #1a0f06;
    --pcb: #0d467d; --pcb-edge: #072a4c; --header: #050607;
    --c-pwm: #fb923c; --c-interrupt: #22d3ee; --c-serial: #d6a26b; --c-i2c: #60a5fa; --c-spi: #a3e635; --c-analog: #4ade80; --c-power: #f87171; --c-kit: #94a3b8;
    --cat-display: #fb923c; --cat-sensor: #22d3ee; --cat-input: #60a5fa; --cat-motor: #fbbf24; --cat-chip: #94a3b8; --cat-basic: #4ade80; --cat-power: #f87171;
    color-scheme: dark;
  }
}
:root[data-theme=dark] {
  --bg: #11161c; --surface: #19212a; --surface-2: #1f2832; --fg: #e3e9ef; --muted: #95a3b2; --line: #2b3642;
  --accent: #f08a4b; --accent-ink: #1a0f06;
  --pcb: #0d467d; --pcb-edge: #072a4c; --header: #050607;
  --c-pwm: #fb923c; --c-interrupt: #22d3ee; --c-serial: #d6a26b; --c-i2c: #60a5fa; --c-spi: #a3e635; --c-analog: #4ade80; --c-power: #f87171; --c-kit: #94a3b8;
  --cat-display: #fb923c; --cat-sensor: #22d3ee; --cat-input: #60a5fa; --cat-motor: #fbbf24; --cat-chip: #94a3b8; --cat-basic: #4ade80; --cat-power: #f87171;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.55 var(--body); }
.wrap { max-width: 1240px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: 1.2rem; font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 700; }
h4 { font-family: var(--display); font-size: 0.95rem; margin: 16px 0 6px; }
p { margin: 0; }
a { color: var(--accent); }
code { font: 0.88em var(--mono); background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible, .pin:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.eyebrow { font: 600 0.72rem/1.2 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.lede { max-width: 66ch; color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* top bar + tabs */
.bar { position: sticky; top: 0; z-index: 20; background: var(--pcb); color: var(--silk); border-bottom: 3px solid var(--pad); padding-top: env(safe-area-inset-top, 0px); }
.bar-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 20px; padding-block: 10px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--silk); text-decoration: none; font: 800 1.15rem var(--display); }
.brand-mark { width: 22px; height: 22px; border-radius: 4px; background: var(--pad); box-shadow: inset 0 0 0 6px var(--pad), inset 0 0 0 11px #2a2f35; }
.tabs { display: flex; gap: 4px; overflow-x: auto; }
.tabs a { color: var(--silk); text-decoration: none; font: 600 0.92rem var(--body); padding: 8px 14px; border-radius: 8px; white-space: nowrap; }
.tabs a:hover { background: color-mix(in srgb, var(--silk) 14%, transparent); }
.tabs a[aria-current=page] { background: var(--silk); color: var(--pcb); }
.bar-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.theme-btn { display: inline-flex; align-items: center; gap: 7px; font: 600 0.82rem var(--mono); color: var(--silk); background: transparent; border: 1.5px solid color-mix(in srgb, var(--silk) 40%, transparent); border-radius: 8px; padding: 6px 10px; cursor: pointer; }
.theme-btn:hover { background: color-mix(in srgb, var(--silk) 14%, transparent); }
.theme-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

main { padding-block: 28px 24px; }
.view { display: grid; gap: 18px; min-width: 0; }
.intro { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; }
.intro > div { display: grid; gap: 8px; min-width: 0; }
input[type=search], select { font: 500 0.95rem var(--mono); padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--fg); width: min(340px, 100%); }
.pin-search { display: flex; gap: 8px; flex: 0 1 420px; }
.pin-search input { flex: 1; }
.btn { font: 600 0.9rem var(--body); padding: 9px 16px; border-radius: 8px; border: 0; background: var(--accent); color: var(--accent-ink); cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: var(--surface); color: var(--fg); border: 1px solid var(--line); }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px; min-width: 0; }
.panel h2 { margin-bottom: 10px; }

/* filter chips */
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-filter { --c: var(--fg); font: 600 0.82rem var(--mono); padding: 6px 12px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--surface); color: var(--fg); cursor: pointer; display: inline-flex; align-items: center; gap: 7px; }
.chip-filter:not([data-f=all]):not([data-cat=all])::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--c); }
.chip-filter[aria-pressed=true] { border-color: var(--c); background: color-mix(in srgb, var(--c) 16%, var(--surface)); }
.f-pwm { --c: var(--c-pwm); } .f-interrupt { --c: var(--c-interrupt); } .f-serial { --c: var(--c-serial); } .f-i2c { --c: var(--c-i2c); }
.f-spi { --c: var(--c-spi); } .f-analog { --c: var(--c-analog); } .f-power { --c: var(--c-power); } .f-kit { --c: var(--c-kit); }
.hl-banner { --cc: var(--pad); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 14px; border-radius: 10px; background: color-mix(in srgb, var(--cc) 12%, var(--surface)); border: 1.5px solid var(--cc); }
.hl-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* board */
.board-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 16px; align-items: start; }
@media (max-width: 1000px) { .board-grid { grid-template-columns: minmax(0, 1fr); } }
.board-col { display: grid; gap: 10px; min-width: 0; }
.board-scroll { overflow-x: auto; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); padding: 10px; }
#board { display: block; width: 100%; min-width: 760px; height: auto; }
.pcb { fill: var(--pcb); stroke: var(--pcb-edge); stroke-width: 3; }
.hole { fill: var(--bg); stroke: var(--pad); stroke-width: 3; }
.usb { fill: #b9c2cc; stroke: #6b7682; stroke-width: 2; }
.jack { fill: #1d2228; stroke: #000; stroke-width: 2; }
.chip { fill: #1b1f24; stroke: #000; }
.chipdot { fill: #3a4048; }
.header { fill: var(--header); }
.silk { fill: var(--silk); font-family: var(--mono); }
.silk.small { font-size: 11px; opacity: 0.8; }
.silk.tiny { font-size: 9.5px; opacity: 0.8; }
.silk.brand { font: 800 34px var(--display); letter-spacing: 0.02em; }
.silk.chiptext { font-size: 14px; font-weight: 600; }
.silk.group { font-size: 11px; letter-spacing: 0.12em; opacity: 0.75; }
.silk.lbl { font-size: 11px; font-weight: 600; }
.pad.dead { fill: var(--pad); opacity: 0.7; }
.pin { cursor: pointer; }
.pin .pad { fill: var(--pad); stroke: #8a6a26; stroke-width: 1; transition: fill .15s, opacity .15s; }
.pin .drill { fill: #2a2f35; }
.pin:hover .pad { fill: var(--pad-on); }
#board.filtering .pin:not(.on) { opacity: 0.25; }
#board.filtering .pin.on .pad { fill: var(--hc); stroke: #fff; stroke-width: 2.5; }
.pin.sel .pad { stroke: #fff !important; stroke-width: 4 !important; }
.pin.sel { opacity: 1 !important; }
.pin.sel .drill { fill: var(--accent); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.85rem; align-items: center; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

#pin-panel { display: grid; gap: 10px; position: sticky; top: 76px; }
#pin-panel h4 { margin: 8px 0 0; }
.aka { font: 500 0.9rem var(--mono); color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { --c: var(--muted); font: 600 0.75rem var(--mono); padding: 2px 9px; border-radius: 999px; color: var(--c); border: 1.5px solid var(--c); }
.tag.t-pwm { --c: var(--c-pwm); } .tag.t-interrupt { --c: var(--c-interrupt); } .tag.t-serial { --c: var(--c-serial); } .tag.t-i2c { --c: var(--c-i2c); }
.tag.t-spi { --c: var(--c-spi); } .tag.t-analog { --c: var(--c-analog); } .tag.t-power { --c: var(--c-power); }
dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 0; font-size: 0.9rem; }
dt { color: var(--muted); font-family: var(--mono); font-size: 0.8rem; padding-top: 2px; }
dd { margin: 0; font-family: var(--mono); font-size: 0.85rem; overflow-wrap: anywhere; }
.limit { font-size: 0.82rem; color: var(--muted); }
.uses { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.uses li { padding-left: 12px; border-left: 4px solid var(--cc); }
.uses li span { display: block; font-size: 0.8rem; color: var(--muted); }
.rev summary { cursor: pointer; display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; }
.rev-body { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px 28px; margin-top: 14px; }

/* parts grid */
#parts-list { display: grid; gap: 18px; }
.cat-group { display: grid; gap: 10px; margin-bottom: 22px; }
.cat-h { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; color: var(--cc); }
.cat-h i { width: 14px; height: 14px; border-radius: 4px; background: var(--cc); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.card { display: grid; gap: 4px; align-content: start; padding: 14px 16px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); border-top: 4px solid var(--cc); color: var(--fg); text-decoration: none; transition: transform .12s, border-color .12s; }
.card:hover { transform: translateY(-2px); border-color: var(--cc); }
.card strong { font: 700 1rem var(--display); }
.card-part { font: 600 0.82rem var(--mono); color: var(--cc); }
.card-meta { display: flex; gap: 10px; font: 0.75rem var(--mono); color: var(--muted); }
.res-pill { justify-self: start; margin-top: 6px; font: 600 0.74rem var(--mono); padding: 2px 9px; border-radius: 999px; background: color-mix(in srgb, var(--pad) 28%, transparent); }
.res-pill.none { background: var(--surface-2); color: var(--muted); }

/* part page */
.detail { --cc: var(--accent); display: grid; gap: 18px; }
.crumbs { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font: 600 0.88rem var(--body); }
.crumbs a { text-decoration: none; }
.pager { display: flex; gap: 14px; flex-wrap: wrap; }
.detail-head { display: grid; gap: 6px; padding: 18px 20px; border-radius: 12px; background: color-mix(in srgb, var(--cc) 10%, var(--surface)); border: 1px solid color-mix(in srgb, var(--cc) 40%, var(--line)); }
.detail-head .btn { justify-self: start; margin-top: 6px; }
.type-badge { justify-self: start; font: 700 0.72rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; padding: 3px 10px; border-radius: 999px; background: var(--cc); color: var(--surface); }
.part-no { font: 600 0.95rem var(--mono); color: var(--cc); }
.detail-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 900px) { .detail-grid { grid-template-columns: minmax(0, 1fr); } }
.detail-main, .detail-side { display: grid; gap: 16px; min-width: 0; }
.res-box { padding: 18px; border-radius: 12px; border: 2px solid var(--pad); background: color-mix(in srgb, var(--pad) 10%, var(--surface)); display: grid; gap: 10px; }
.res-box.none { border-style: dashed; border-color: var(--line); background: var(--surface); }
.res-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.res-list li { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 12px; align-items: start; }
@media (max-width: 520px) { .res-list li { grid-template-columns: minmax(0, 1fr); gap: 4px; } }
.res-val { display: grid; gap: 4px; justify-items: start; }
.res-val .rv { white-space: normal; }
.res-where { font-weight: 600; }
.rv { font: 700 0.9rem var(--mono); white-space: nowrap; }
.rv.big { font-size: 1.6rem; }
.diagram-wrap { overflow-x: auto; margin: 6px 0; }
svg.part { display: block; max-width: none; height: auto; margin-inline: auto; }
.pinout-panel { display: grid; gap: 8px; }
svg.part .body { fill: #23282e; }
svg.part .notch { fill: none; stroke: #6b737c; stroke-width: 2; }
svg.part .bodytext { fill: #d7dde3; font: 600 14px var(--mono); }
.pp rect { fill: var(--surface); stroke-width: 2; }
.pp .pn { fill: var(--muted); font: 500 11px var(--mono); }
.pp .pl { fill: var(--fg); font: 700 12px var(--mono); }
.pp.k-pwr rect { stroke: var(--c-power); } .pp.k-pwr .pl { fill: var(--c-power); }
.pp.k-gnd rect { stroke: var(--muted); stroke-dasharray: 3 2; }
.pp.k-sig rect { stroke: var(--c-i2c); }
td.k-pwr { color: var(--c-power); } td.k-sig { color: var(--c-i2c); } td.k-gnd { color: var(--muted); }
.key { display: flex; gap: 14px; flex-wrap: wrap; }
.k { display: inline-flex; align-items: center; gap: 6px; }
.k::before { content: ""; width: 14px; height: 10px; border-radius: 3px; border: 2px solid; }
.k-pwr.k::before { border-color: var(--c-power); } .k-gnd.k::before { border: 2px dashed var(--muted); } .k-sig.k::before { border-color: var(--c-i2c); }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 0.72rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.table-scroll { overflow-x: auto; }
.pintable td:nth-child(-n+2), .wiretable td:first-child { font-family: var(--mono); font-weight: 600; white-space: nowrap; }
.wiretable td.mega { font-family: var(--mono); }
.megapin { display: inline-block; font: 700 0.85rem var(--mono); padding: 1px 8px; border-radius: 5px; background: var(--pcb); color: var(--silk); }
.notes { margin: 0; padding-left: 20px; display: grid; gap: 6px; }

/* resistors view */
.res-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 900px) { .res-grid { grid-template-columns: minmax(0, 1fr); } }
.rules td:first-child { font-weight: 600; }
.calc-form { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px 14px; align-items: center; }
.calc-form select { width: 100%; }
.range { display: flex; gap: 10px; align-items: center; }
.range input { flex: 1; accent-color: var(--accent); }
.range output { font: 700 0.9rem var(--mono); min-width: 52px; }
.calc-out { margin-top: 16px; display: grid; gap: 10px; padding-top: 14px; border-top: 1px solid var(--line); }
.calc-math { font: 0.92rem var(--mono); }
.calc-pick { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.kit-res { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-top: 12px; }
.kit-res figure { margin: 0; display: grid; gap: 4px; justify-items: start; }
.kit-res figcaption { display: grid; }
.resistor .lead { stroke: #9aa3ad; stroke-width: 2.5; }
.resistor .rbody { fill: #e8d3a8; stroke: #b99c63; stroke-width: 1; }
.all-res td { font-size: 0.88rem; }
.dotlink { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; text-decoration: none; color: var(--fg); }
.dotlink i { width: 10px; height: 10px; border-radius: 3px; background: var(--cc); flex: none; }
.dotlink:hover { color: var(--accent); }

/* sources */
.links { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.links li { overflow-wrap: anywhere; }
.host { font: 0.75rem var(--mono); color: var(--muted); }
.badge { font: 600 0.7rem var(--mono); padding: 1px 7px; border-radius: 999px; background: color-mix(in srgb, var(--pad) 30%, transparent); color: var(--fg); white-space: nowrap; }
.sources { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; align-items: start; }
.foot { padding-block: 22px 44px; margin-top: 12px; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.linkbtn { font: inherit; color: var(--accent); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; }
kbd { font: 600 0.8em var(--mono); padding: 1px 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; background: var(--surface-2); color: var(--fg); }
.pin-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.btn.small { padding: 6px 12px; font-size: 0.82rem; }
.to-top { position: fixed; right: max(16px, env(safe-area-inset-right, 0px)); bottom: max(16px, env(safe-area-inset-bottom, 0px)); z-index: 30; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line); background: var(--surface); color: var(--fg); font-size: 1.2rem; cursor: pointer; box-shadow: 0 4px 14px rgb(0 0 0 / .18); opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity .2s, transform .2s; }
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.keys-dlg { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--fg); padding: 20px 22px; width: min(420px, calc(100vw - 32px)); }
.keys-dlg::backdrop { background: rgb(0 0 0 / .45); }
.keys-dlg h2 { margin-bottom: 12px; }
.keys-dlg table td:first-child { white-space: nowrap; }
.keys-dlg form { margin-top: 14px; text-align: right; }
@media print {
  :root, :root[data-theme] { --bg: #fff; --surface: #fff; --surface-2: #f4f4f4; --fg: #000; --muted: #444; --line: #bbb; color-scheme: light; }
  .bar, .foot, .to-top, .crumbs, .filters, .pin-search, #comp-search, .hl-banner, .btn, .as-table summary { display: none !important; }
  main { padding-top: 0; }
  .panel, .res-box, .detail-head { break-inside: avoid; }
  .as-table > :not(summary) { display: block !important; }
  a { color: inherit; text-decoration: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* wiring diagrams (one column per connection: Mega box, wire, part pin) */
.wiring-panel { display: grid; gap: 6px; }
.wire-set { display: grid; gap: 8px; margin-top: 8px; }
.wire-set h4 { margin: 8px 0 0; }
.diagram-scroll { overflow-x: auto; padding-bottom: 4px; }
svg.wiring { display: block; max-width: none; }
.w-body { fill: #23282e; }
.w-bodytext { fill: #d7dde3; font: 600 13px var(--mono); }
.w-box { fill: var(--surface); stroke-width: 2; }
.w-box.mega { fill: var(--pcb); stroke: var(--pcb-edge); }
.w-box.mega.w-pwr { stroke: var(--c-power); } .w-box.mega.w-gnd { stroke: var(--muted); }
.w-box.other { stroke: var(--line); stroke-dasharray: 5 3; }
.w-cap { fill: var(--silk); opacity: .7; font: 600 9px var(--mono); letter-spacing: .1em; }
.w-pin { fill: var(--silk); font: 700 17px var(--mono); }
.w-other { fill: var(--fg); font: 600 11px var(--mono); }
.w-note { fill: var(--muted); font: 11px var(--body); }
.w-wire { fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.w-wire.w-sig { stroke: var(--cc); } .w-wire.w-pwr { stroke: var(--c-power); } .w-wire.w-gnd { stroke: var(--muted); }
.w-wire.dashed { stroke-dasharray: 6 5; }
.w-dot { fill: var(--fg); }
.w-rlabel-bg { fill: color-mix(in srgb, var(--pad) 30%, var(--surface)); }
.w-rlabel { fill: var(--fg); font: 700 11px var(--mono); }
.w-pinbox { fill: var(--surface); stroke-width: 2; }
.w-pinbox.w-sig { stroke: var(--cc); } .w-pinbox.w-pwr { stroke: var(--c-power); } .w-pinbox.w-gnd { stroke: var(--muted); stroke-dasharray: 3 2; }
.w-partpin { fill: var(--fg); font: 700 11.5px var(--mono); }
.wk { display: inline-flex; align-items: center; gap: 6px; }
.wk::before { content: ""; width: 20px; height: 0; border-top: 3px solid var(--cc); }
.wk.w-pwr::before { border-color: var(--c-power); } .wk.w-gnd::before { border-color: var(--muted); }
.wk.dashed::before { border-top-style: dashed; border-color: var(--fg); }
.wk.res::before { width: 18px; height: 10px; border: 0; background: color-mix(in srgb, var(--pad) 60%, transparent); border-radius: 3px; }
.as-table summary { cursor: pointer; font: 600 0.85rem var(--body); color: var(--accent); }
.as-table[open] summary { margin-bottom: 6px; }

/* part drawings */
svg.part .leg { stroke: #a9b1ba; stroke-width: 3; }
svg.part .padsq { fill: var(--pad); }
.b-disp, .b-chip { fill: #23282e; }
.seg { fill: #3a2a2a; }
.seg-t { fill: #8a6f6f; font: 700 9px var(--mono); }
.dim-t { fill: #8b939c; font: 600 11px var(--mono); }
.dim-dot { fill: #3a4048; }
.chip-t { fill: #d7dde3; font: 700 16px var(--mono); }
svg.part .notch { fill: none; stroke: #6b737c; stroke-width: 2; }
.b-green { fill: #1f6b3a; }
.b-bezel { fill: #15181b; }
.b-screen { fill: #6f9be0; }
.lcd-t { fill: #f2f6ff; font: 600 15px var(--mono); }
.b-key { fill: #2b2f36; }
.k-blue { fill: #2d5fb3; } .k-red { fill: #b33a3a; }
.key-t { fill: #fff; font: 700 15px var(--mono); }
.b-servo { fill: #2563eb; }
.b-horn { fill: #f5f5f5; stroke: #c9ced4; }
.b-cap { fill: #2b2f36; stroke: #5b636c; stroke-width: 3; }
.b-pcb { fill: #165a9a; }
.silk-t { fill: #eef4fa; font: 700 12px var(--mono); }
.tiny-t { fill: #eef4fa; font: 700 10px var(--mono); }
.tiny-t.dark { fill: #2b2f36; }
.f-can { fill: #c8ced5; stroke: #8b939c; stroke-width: 2; } .f-mesh { fill: #3a4048; }
.f-cap { fill: #3d8fe0; } .f-slot { fill: #1f5c9c; }
.f-ic { fill: #1b1f24; }
.f-dome { fill: #f1f2ee; stroke: #c9ced4; stroke-width: 2; }
.f-trace { fill: #d9ab4f; }
.f-pot { fill: #2563eb; stroke: #9cc0ff; }
.f-cell { fill: #c0c6cd; stroke: #7e8791; stroke-width: 2; }
.f-ant { fill: none; stroke: #d9ab4f; stroke-width: 3; }
.f-knob { fill: #2b2f36; stroke: #59616b; stroke-width: 2; }
.f-irdome { fill: #1b1f24; stroke: #6b737c; }
.f-led { fill: #b33a3a; } .f-led.red { fill: #ff5a5a; }
.f-relay { fill: #2f6fdc; }
.f-jack { fill: #1b1f24; } .f-usb { fill: #c0c6cd; }
.f-led-dome { fill: #e9eef5; stroke: #b5bec8; stroke-width: 2; }
.f-buzz { fill: #1b1f24; } .f-hole { fill: #444b53; }
.f-bead { fill: #1b1f24; }
.f-ldr { fill: #e5c79a; stroke: #b99c63; stroke-width: 2; } .f-squig { fill: none; stroke: #b33a3a; stroke-width: 2.5; }
.f-tilt { fill: #c0c6cd; stroke: #7e8791; stroke-width: 2; }
.f-potbody { fill: #2563eb; } .f-tick { stroke: #fff; stroke-width: 3; stroke-linecap: round; }