.psu-root {
    --n-ink: #10253a;
  --n-muted: #5b7185;
  --n-bg: #f5f9fc;
  --n-card: #fff;
  --n-line: #d5e2ec;
  --n-accent: #16839d;
  --n-accent-soft: #e0f3f7;
  --n-good: #087b5b;
  --n-warn: #a66700;
  --n-danger: #b42318;
  --n-shadow: rgb(16, 37, 58, 0.12);
  --n-stage-glow: #e4f4f7;
  --n-grid: rgb(22, 131, 157, 0.06);
  --n-border-soft: rgb(22, 131, 157, 0.24);
  --n-border-faint: rgb(22, 131, 157, 0.16);
  --n-workbench: rgb(255, 255, 255, 0.86);
  --n-constellation: #eef8fb;
  --n-core: #fff;
  --n-core-dark: #e7f3f6;
  --n-plate: rgb(255, 255, 255, 0.9);
  --n-deck: rgb(245, 249, 252, 0.82);
  --n-readout: rgb(255, 255, 255, 0.92);
  --n-mask: #fff;

  box-sizing: border-box;
  width: 100%;
  color: var(--n-ink);
  padding: 0.9rem;
  border: 1px solid var(--n-line);
  border-radius: 1.4rem;
  background: radial-gradient(circle at 74% 24%, var(--n-stage-glow) 0, var(--n-bg) 42%), var(--n-bg);
  box-shadow: 0 1.4rem 4rem var(--n-shadow);
}

.theme-dark .psu-root {
  --n-ink: #eff7ff;
  --n-muted: #aabacc;
  --n-bg: #08111c;
  --n-card: #102231;
  --n-line: #29445b;
  --n-accent: #5bd0e4;
  --n-accent-soft: #123d4b;
  --n-good: #55ddb0;
  --n-warn: #f5c36d;
  --n-danger: #ff7f78;
  --n-stage-glow: #173447;
  --n-grid: rgb(91, 208, 228, 0.035);
  --n-border-soft: rgb(91, 208, 228, 0.24);
  --n-border-faint: rgb(91, 208, 228, 0.18);
  --n-workbench: rgb(11, 28, 42, 0.82);
  --n-constellation: #0c1c2b;
  --n-core: #102a3d;
  --n-core-dark: #091724;
  --n-plate: rgb(8, 17, 28, 0.8);
  --n-deck: rgb(8, 17, 28, 0.56);
  --n-readout: rgb(16, 34, 49, 0.84);
  --n-mask: #000;
}

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

.psu-workbench {
  position: relative;
  display: grid;
  gap: 1rem;
  overflow: hidden;
  padding: 1rem;
  border: 1px solid var(--n-border-soft);
  border-radius: 1rem;
  background: var(--n-workbench);
}

.psu-workbench::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  content: '';
  background-image: linear-gradient(var(--n-grid) 1px, transparent 1px), linear-gradient(90deg, var(--n-grid) 1px, transparent 1px);
  background-size: 2.5rem 2.5rem;
  mask-image: linear-gradient(to bottom, var(--n-mask), transparent 88%);
}

.psu-workbench > * {
  position: relative;
  z-index: 1;
}

.psu-workbench-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
}

.psu-scene-kicker,
.psu-deck-heading strong {
  color: var(--n-accent);
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.psu-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.psu-presets button,
.psu-advanced-toggle {
  border: 1px solid var(--n-line);
  background: transparent;
  color: var(--n-muted);
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.psu-presets button {
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
}

.psu-presets button:hover,
.psu-presets button.active,
.psu-presets button:focus-visible {
  border-color: var(--n-accent);
  background: var(--n-accent-soft);
  color: var(--n-accent);
}

.psu-live-verdict {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--n-muted);
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.psu-live-verdict::before {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: currentcolor;
  box-shadow: 0 0 1rem currentcolor;
  content: '';
}

.psu-status-insufficient {
  color: var(--n-danger);
}

.psu-status-tight {
  color: var(--n-warn);
}

.psu-status-recommended {
  color: var(--n-good);
}

.psu-status-oversized {
  color: var(--n-accent);
}

.psu-constellation {
  min-height: 29rem;
  overflow: hidden;
  border: 1px solid var(--n-border-soft);
  border-radius: 1rem;
  background: radial-gradient(circle at 50% 48%, var(--n-stage-glow) 0, var(--n-constellation) 33%, var(--n-bg) 72%);
}

.psu-diagram {
  display: block;
  width: 100%;
  min-height: 29rem;
}

.psu-art-caption {
  fill: var(--n-muted);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0.18em;
  text-anchor: middle;
  text-transform: uppercase;
}

.psu-reading rect {
  fill: var(--n-plate);
  stroke: var(--n-line);
  stroke-width: 1.5;
}

.psu-reading text {
  fill: var(--n-muted);
  font-size: 10px;
  font-weight: 850;
  text-anchor: middle;
}

.psu-reading .psu-reading-value {
  fill: var(--n-ink);
  font-size: 17px;
  font-weight: 950;
}

.psu-reading-minimum rect {
  stroke: var(--n-warn);
}

.psu-reading-recommended rect {
  stroke: var(--n-good);
}

.psu-core-halo {
  fill: var(--n-accent-soft);
  opacity: 0.2;
  transform-box: fill-box;
  transform-origin: 50% 50%;
  animation: psu-halo 3s ease-in-out infinite;
}

.psu-core-ring,
.psu-core-ring-fill {
  fill: none;
  stroke-width: 10;
  transform-box: fill-box;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}

.psu-core-ring {
  stroke: var(--n-line);
}

.psu-core-ring-fill {
  stroke: var(--n-good);
  stroke-linecap: round;
  animation: psu-ring 2.5s ease-in-out infinite;
}

.psu-core-insufficient .psu-core-ring-fill {
  stroke: var(--n-danger);
}

.psu-core-tight .psu-core-ring-fill {
  stroke: var(--n-warn);
}

.psu-core-oversized .psu-core-ring-fill {
  stroke: var(--n-accent);
}

.psu-art-body {
  fill: var(--n-core);
  stroke: var(--n-accent);
  stroke-width: 2;
}

.psu-art-inset {
  fill: var(--n-core-dark);
  stroke: var(--n-line);
  stroke-width: 1;
}

.psu-art-fan {
  fill: var(--n-accent-soft);
  stroke: var(--n-accent);
  stroke-width: 2;
}

.psu-art-fan-core {
  fill: var(--n-accent);
}

.psu-art-blades {
  fill: var(--n-good);
  opacity: 0.82;
  transform-origin: 380px 210px;
  animation: psu-spin 7s linear infinite;
}

.psu-art-label {
  fill: var(--n-accent);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.2em;
  text-anchor: middle;
}

.psu-art-led {
  filter: url("#psu-glow");
}

.psu-art-led-insufficient {
  fill: var(--n-danger);
}

.psu-art-led-tight {
  fill: var(--n-warn);
}

.psu-art-led-recommended {
  fill: var(--n-good);
}

.psu-art-led-oversized {
  fill: var(--n-accent);
}

.psu-core-value,
.psu-core-label {
  fill: var(--n-ink);
  font-weight: 950;
  text-anchor: middle;
}

.psu-core-value {
  font-size: 25px;
}

.psu-core-label {
  fill: var(--n-muted);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.psu-node {
  fill: var(--n-core);
  stroke: var(--n-accent);
  stroke-width: 2;
  transition: fill 180ms ease, stroke-width 180ms ease;
}

.psu-node-gpu {
  stroke: var(--n-good);
}

.psu-node-label {
  fill: var(--n-muted);
  font-size: 10px;
  font-weight: 900;
}

.psu-node-value {
  fill: var(--n-accent);
  font-size: 11px;
  font-weight: 950;
}

.psu-node-group {
  cursor: pointer;
  outline: none;
}

.psu-node-group:hover .psu-node,
.psu-node-group:focus .psu-node {
  fill: var(--n-accent-soft);
  stroke-width: 4;
}

.psu-node-group:hover .psu-cable,
.psu-node-group:focus .psu-cable {
  stroke: var(--n-ink);
  stroke-width: 5;
}

.psu-cable {
  fill: none;
  stroke: url("#psu-energy");
  stroke-linecap: round;
  stroke-dasharray: 7 9;
  animation: psu-flow 1.4s linear infinite;
}

.psu-energy-pulse {
  fill: var(--n-good);
  filter: url("#psu-glow");
}

.psu-control-deck {
  display: grid;
  gap: 0.8rem;
  padding: 1rem;
  border: 1px solid var(--n-border-faint);
  border-radius: 0.9rem;
  background: var(--n-deck);
}

.psu-deck-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}

.psu-deck-heading span {
  color: var(--n-muted);
  font-size: 0.76rem;
}

.psu-channel-grid,
.psu-advanced-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

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

.psu-channel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 4.8rem;
  gap: 0.4rem 0.7rem;
  padding: 0.7rem;
  border-top: 2px solid var(--n-accent);
  border-radius: 0.5rem;
  background: var(--n-readout);
}

.psu-channel-gpu {
  border-color: var(--n-good);
}

.psu-channel-psu {
  border-color: var(--n-warn);
}

.psu-channel > span,
.psu-margin-deck label > span {
  color: var(--n-muted);
  font-size: 0.76rem;
  font-weight: 900;
}

.psu-channel > span {
  display: flex;
  gap: 0.3rem;
  align-items: baseline;
}

.psu-channel em {
  color: var(--n-accent);
  font-size: 0.62rem;
  font-style: normal;
  letter-spacing: 0.1em;
}

.psu-channel input[type="number"] {
  width: 100%;
  min-height: 2rem;
  padding: 0 0.45rem;
  border: 1px solid var(--n-line);
  border-radius: 0.45rem;
  background: var(--n-bg);
  color: var(--n-ink);
  font: inherit;
  font-weight: 900;
}

.psu-channel input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--n-accent);
}

.psu-advanced-toggle {
  justify-self: start;
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  color: var(--n-accent);
  font-size: 0.74rem;
}

.psu-advanced-toggle:hover,
.psu-advanced-toggle:focus-visible {
  border-color: var(--n-accent);
  background: var(--n-accent-soft);
}

.psu-advanced-panel {
  display: grid;
  gap: 0.9rem;
}

.psu-advanced-panel[hidden],
.psu-advanced-field[hidden] {
  display: none;
}

.psu-margin-deck {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.psu-margin-deck label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem 0.8rem;
}

.psu-margin-deck input {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--n-accent);
}

.psu-margin-deck strong {
  color: var(--n-ink);
  font-size: 0.78rem;
}

.psu-readout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(20rem, 1fr);
  gap: 1rem;
  align-items: stretch;
}

.psu-next-move {
  display: flex;
  align-items: center;
  min-height: 4.4rem;
  padding: 0.9rem 1rem;
  border-left: 0.35rem solid var(--n-accent);
  border-radius: 0.65rem;
  background: var(--n-readout);
  color: var(--n-ink);
  font-size: 0.9rem;
  font-weight: 850;
  line-height: 1.4;
}

.psu-readout-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--n-line);
  border-radius: 0.65rem;
  background: var(--n-deck);
}

.psu-readout-metrics div {
  display: grid;
  gap: 0.35rem;
  padding: 0.8rem;
}

.psu-readout-metrics div + div {
  border-left: 1px solid var(--n-line);
}

.psu-readout-metrics span {
  color: var(--n-muted);
  font-size: 0.68rem;
  font-weight: 850;
}

.psu-readout-metrics strong {
  font-size: clamp(1.05rem, 2vw, 1.45rem);
  line-height: 1;
}

.psu-channel input:focus-visible,
.psu-presets button:focus-visible,
.psu-advanced-toggle:focus-visible {
  outline: 3px solid var(--n-accent-soft);
  outline-offset: 2px;
}

@keyframes psu-flow {
  to {
    stroke-dashoffset: -32;
  }
}

@keyframes psu-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes psu-halo {
  0%, 100% {
    opacity: 0.12;
    transform: scale(0.96);
  }
  50% {
    opacity: 0.3;
    transform: scale(1.04);
  }
}

@keyframes psu-ring {
  0%, 100% {
    opacity: 0.78;
  }
  50% {
    opacity: 1;
  }
}

@media (max-width: 900px) {
  .psu-workbench-header,
  .psu-readout {
    grid-template-columns: 1fr;
  }

  .psu-live-verdict {
    justify-self: start;
  }

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

@media (max-width: 620px) {
  .psu-root {
    padding: 0.45rem;
  }

  .psu-workbench {
    padding: 0.65rem;
  }

  .psu-channel-grid,
  .psu-advanced-grid,
  .psu-margin-deck {
    grid-template-columns: 1fr;
  }

  .psu-constellation,
  .psu-diagram {
    min-height: 23rem;
  }

  .psu-readout-metrics {
    grid-template-columns: 1fr;
  }

  .psu-readout-metrics div + div {
    border-top: 1px solid var(--n-line);
    border-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .psu-cable,
  .psu-energy-pulse,
  .psu-art-blades,
  .psu-core-halo,
  .psu-core-ring-fill {
    animation: none;
  }
}