.lrc-root {
  --n-ink: #14201c;
  --n-muted: #5d726a;
  --n-pcb: #1f5a4a;
  --n-pcb-deep: #163f35;
  --n-silk: #d8efe4;
  --n-copper: #c9894a;
  --n-copper-hot: #e8a35a;
  --n-tin: #c9d4cf;
  --n-ceramic: #d8c4a0;
  --n-heat: #e36a2a;
  --n-panel: #f4f7f4;
  --n-card: #fff;
  --n-line: #c9d8d1;
  --n-accent: #1f8a6a;
  --n-accent-soft: #d7f0e6;
  --n-warn: #b56a12;
  --n-danger: #b42318;
  --n-black: #111;
  --n-brown: #7b432d;
  --n-red: #d9473f;
  --n-orange: #ef8b35;
  --n-yellow: #e7c84a;
  --n-green: #58a86a;
  --n-blue: #4c82c4;
  --n-violet: #8664b6;
  --n-gray: #9a9da3;
  --n-white: #f4efe1;
  --n-gold: #c79b45;
  --n-silver: #b7bdc8;
  --n-ir: #6a1c1c;
  --n-uv: #7a4dff;
  --n-led: #d9473f;
  --n-shadow: rgb(20, 32, 28, 0.16);
  --n-glow: 1;

  box-sizing: border-box;
  width: 100%;
  color: var(--n-ink);
  border: 1px solid var(--n-line);
  border-radius: 1.4rem;
  background: var(--n-panel);
  box-shadow: 0 1.4rem 3rem var(--n-shadow);
}

.theme-dark .lrc-root {
  --n-ink: #e8f4ee;
  --n-muted: #9db5ab;
  --n-pcb: #0f2c26;
  --n-pcb-deep: #091c18;
  --n-silk: #b7d8ca;
  --n-copper: #e09a4f;
  --n-copper-hot: #ffc078;
  --n-tin: #9aa8a2;
  --n-ceramic: #b79d74;
  --n-heat: #ff7a3a;
  --n-panel: #101816;
  --n-card: #18241f;
  --n-line: #2c463d;
  --n-accent: #5ee0b0;
  --n-accent-soft: #16362d;
  --n-warn: #f5c36d;
  --n-danger: #ff7f78;
  --n-shadow: rgb(0, 0, 0, 0.35);
}

.lrc-root,
.lrc-root * {
  box-sizing: border-box;
}

.lrc-bench {
  display: grid;
  gap: 0.85rem;
  padding: 0.85rem;
}

.lrc-group > span,
.lrc-slider > span,
.lrc-buy span,
.lrc-rail-head > span,
.lrc-part-kicker {
  color: var(--n-muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lrc-note {
  margin: 0;
  color: var(--n-muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.lrc-stage {
  overflow: hidden;
  border-radius: 1rem;
  background:
    radial-gradient(circle at 78% 38%, rgb(255, 255, 255, 0.1), transparent 26%),
    linear-gradient(180deg, var(--n-pcb) 0%, var(--n-pcb-deep) 100%);
  box-shadow: inset 0 0 0 1px rgb(255, 255, 255, 0.08);
}

.lrc-scene {
  display: grid;
  gap: 0.45rem;
  padding: 0.75rem 0.7rem 1rem;
}

.lrc-formula,
.lrc-legend,
.lrc-warning {
  margin: 0;
  color: var(--n-silk);
  text-align: center;
}

.lrc-formula {
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.lrc-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.1rem;
  justify-content: center;
  padding: 0.15rem 0 0.2rem;
  font-size: 0.78rem;
  font-weight: 800;
}

.lrc-legend-item {
  display: inline-flex;
  gap: 0.3rem;
  align-items: center;
}

.lrc-legend-swatch {
  width: 0.7rem;
  height: 0.9rem;
  border-radius: 0.12rem;
}

.lrc-warning {
  justify-self: center;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--n-warn);
  border-radius: 999px;
  color: var(--n-warn);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lrc-warning[data-status="overdriven"],
.lrc-warning[data-status="no-headroom"],
.lrc-warning[data-status="invalid"] {
  border-color: var(--n-danger);
  color: var(--n-danger);
}

.lrc-board {
  display: block;
  width: 100%;
  height: auto;
}

.lrc-trace,
.lrc-trace-glow {
  fill: none;
  stroke: var(--n-copper);
  stroke-linecap: round;
}

.lrc-trace {
  stroke-width: 8px;
}

.lrc-trace-glow {
  stroke-width: 16px;
  opacity: 0.28;
}

.lrc-flow {
  stroke-dasharray: 7 11;
  animation: lrc-flow 0.9s linear infinite;
}

.lrc-trace-dead {
  stroke: var(--n-tin);
  opacity: 0.35;
}

.lrc-scene[data-status="tight"] .lrc-trace {
  stroke-width: 5px;
}

.lrc-psu-body {
  fill: var(--n-pcb-deep);
  stroke: var(--n-silk);
  stroke-width: 2px;
}

.lrc-part-value {
  fill: var(--n-silk);
  font-size: 18px;
  font-weight: 800;
  text-anchor: middle;
}

.lrc-part-kicker,
.lrc-part-note,
.lrc-part-watts {
  fill: var(--n-tin);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-anchor: middle;
}

.lrc-part-kicker,
.lrc-part-note {
  text-transform: uppercase;
}

.lrc-resistor-lead,
.lrc-led-lead {
  fill: var(--n-tin);
}

.lrc-resistor-body {
  fill: var(--n-ceramic);
}

.lrc-resistor-heat {
  fill: var(--n-heat);
  opacity: 0;
}

.lrc-resistor-warm .lrc-resistor-heat {
  opacity: 0.32;
}

.lrc-resistor-hot .lrc-resistor-heat {
  filter: url("#lrc-heat-blur");
  opacity: 0.62;
  animation: lrc-heat 1.2s ease-in-out infinite;
}

.lrc-band-black {
  fill: var(--n-black);
  background: var(--n-black);
}

.lrc-band-brown {
  fill: var(--n-brown);
  background: var(--n-brown);
}

.lrc-band-red {
  fill: var(--n-red);
  background: var(--n-red);
}

.lrc-band-orange {
  fill: var(--n-orange);
  background: var(--n-orange);
}

.lrc-band-yellow {
  fill: var(--n-yellow);
  background: var(--n-yellow);
}

.lrc-band-green {
  fill: var(--n-green);
  background: var(--n-green);
}

.lrc-band-blue {
  fill: var(--n-blue);
  background: var(--n-blue);
}

.lrc-band-violet {
  fill: var(--n-violet);
  background: var(--n-violet);
}

.lrc-band-gray {
  fill: var(--n-gray);
  background: var(--n-gray);
}

.lrc-band-white {
  fill: var(--n-white);
  background: var(--n-white);
}

.lrc-band-gold {
  fill: var(--n-gold);
  background: var(--n-gold);
}

.lrc-band-silver {
  fill: var(--n-silver);
  background: var(--n-silver);
}

.lrc-led-pad {
  fill: var(--n-led);
  opacity: 0.12;
}

.lrc-led-lit .lrc-led-pad {
  filter: url("#lrc-glow");
  opacity: calc(0.18 * var(--n-glow));
}

.lrc-led-rim {
  fill: var(--n-tin);
}

.lrc-led-dome,
.lrc-led-can {
  fill: var(--n-led);
}

.lrc-led-lit .lrc-led-dome,
.lrc-led-lit .lrc-led-can {
  filter: url("#lrc-glow");
  opacity: var(--n-glow);
}

.lrc-led-infrared { --n-led: var(--n-ir); }
.lrc-led-red,
.lrc-root[data-led="red"] { --n-led: var(--n-red); }
.lrc-led-orange { --n-led: var(--n-orange); }
.lrc-led-yellow { --n-led: var(--n-yellow); }
.lrc-led-green { --n-led: var(--n-green); }
.lrc-led-blue { --n-led: var(--n-blue); }
.lrc-led-white { --n-led: var(--n-white); }
.lrc-led-uv { --n-led: var(--n-uv); }

.lrc-gnd-stem,
.lrc-gnd-line {
  fill: none;
  stroke: var(--n-tin);
  stroke-width: 4px;
  stroke-linecap: round;
}

.lrc-buy {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 0;
  padding: 0.9rem 1rem;
  border: 1px solid var(--n-line);
  border-radius: 1rem;
  background: var(--n-card);
}

.lrc-buy div {
  display: grid;
  gap: 0.2rem;
}

.lrc-buy strong {
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.lrc-controls {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--n-line);
  border-radius: 1rem;
  background: var(--n-card);
}

.lrc-group,
.lrc-slider {
  display: grid;
  gap: 0.5rem;
}

.lrc-rail-head {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
}

.lrc-swatches,
.lrc-rails,
.lrc-pills {
  display: grid;
  gap: 0.45rem;
}

.lrc-swatches {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.lrc-rails {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.lrc-pills {
  grid-template-columns: repeat(auto-fit, minmax(2.8rem, 1fr));
}

.lrc-split {
  display: grid;
  gap: 0.85rem;
}

.lrc-swatch,
.lrc-rails button,
.lrc-pills button,
.lrc-advanced-toggle {
  border: 1px solid var(--n-line);
  background: var(--n-panel);
  color: var(--n-ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.lrc-swatch {
  display: grid;
  width: 100%;
  min-width: 0;
  justify-items: center;
  gap: 0.35rem;
  padding: 0.6rem 0.3rem 0.45rem;
  border-radius: 0.9rem;
  font-size: 0.72rem;
}

.lrc-swatch::before {
  width: 1.15rem;
  height: 1.4rem;
  border-radius: 50% 50% 32% 32%;
  background: var(--n-led);
  box-shadow: 0 0 0.7rem var(--n-led);
  content: "";
}

.lrc-rails button,
.lrc-pills button,
.lrc-advanced-toggle {
  width: 100%;
  min-height: 2.4rem;
  padding: 0.4rem 0.55rem;
  border-radius: 0.8rem;
  font-size: 0.78rem;
}

.lrc-advanced-toggle {
  width: auto;
  min-width: 9rem;
  color: var(--n-accent);
}

.lrc-swatch-infrared { --n-led: var(--n-ir); }
.lrc-swatch-red { --n-led: var(--n-red); }
.lrc-swatch-orange { --n-led: var(--n-orange); }
.lrc-swatch-yellow { --n-led: var(--n-yellow); }
.lrc-swatch-green { --n-led: var(--n-green); }
.lrc-swatch-blue { --n-led: var(--n-blue); }
.lrc-swatch-white { --n-led: var(--n-white); }
.lrc-swatch-uv { --n-led: var(--n-uv); }

.lrc-swatch.active,
.lrc-rails button.active,
.lrc-pills button.active,
.lrc-swatch:focus-visible,
.lrc-rails button:focus-visible,
.lrc-pills button:focus-visible,
.lrc-advanced-toggle:focus-visible,
.lrc-advanced-toggle:hover {
  border-color: var(--n-accent);
  background: var(--n-accent-soft);
  color: var(--n-accent);
}

.lrc-advanced[hidden] {
  display: none;
}

.lrc-advanced {
  display: grid;
  gap: 0.85rem;
}

.lrc-slider {
  grid-template-columns: 1fr 4.6rem auto;
  align-items: center;
}

.lrc-slider > span {
  grid-column: 1 / -1;
}

.lrc-slider input[type="range"] {
  width: 100%;
  accent-color: var(--n-accent);
}

.lrc-slider input[type="number"] {
  width: 100%;
  min-height: 2.1rem;
  padding: 0 0.4rem;
  border: 1px solid var(--n-line);
  border-radius: 0.45rem;
  background: var(--n-panel);
  color: var(--n-ink);
  font: inherit;
  font-weight: 800;
}

.lrc-slider em {
  color: var(--n-muted);
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 800;
}

@keyframes lrc-flow {
  to { stroke-dashoffset: -36px; }
}

@keyframes lrc-heat {
  50% { opacity: 0.85; }
}

@media (width >= 40rem) {
  .lrc-buy {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 0.8fr);
    align-items: end;
    gap: 1rem 1.5rem;
    padding: 1rem 1.25rem;
  }

  .lrc-buy strong {
    font-size: 2rem;
  }

  .lrc-rails {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (width >= 48rem) {
  .lrc-swatches {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .lrc-split {
    grid-template-columns: 1fr 1fr;
  }

  .lrc-formula {
    font-size: 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lrc-flow,
  .lrc-resistor-hot .lrc-resistor-heat {
    animation: none;
  }
}