:root {
  --bg: #0a0e14;
  --s1: #0f1419;
  --s2: #161d27;
  --s3: #1e2733;
  --bdr: #273040;
  --ink: #e2eaf4;
  --sub: #8899aa;
  --muted: #6e7a8a;
  --cAlt: #3fb950;
  --cPit: #58a6ff;
  --cP: #ff7b72;
  --cI: #7ee787;
  --cD: #e3b341;
  --cAltP: var(--cP);
  --cAltI: var(--cI);
  --cAltD: var(--cD);
  --cPitP: var(--cP);
  --cPitI: var(--cI);
  --cPitD: var(--cD);
  --ok: #3fb950;
  --warn: #e3b341;
  --glow-blur: 0;
  --glow-alpha: 0;
  --col-split: 50%;
  --hdr-h: 44px;
  --drawer-w: 280px;
  --font-ui: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", Menlo, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

body {
  font-family: var(--font-ui);
}

.layout {
  display: flex;
  height: calc(100dvh - var(--hdr-h));
  overflow: hidden;
}

.app {
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, var(--col-split)) 4px minmax(0, 1fr);
  overflow: hidden;
}

.col {
  min-width: 0;
  border-right: 1px solid var(--bdr);
}

.col:last-child {
  border-right: none;
}

.axis-col {
  display: grid;
  grid-template-rows: minmax(0, 55%) minmax(0, 1fr) minmax(0, 1fr) 52px;
  height: 100%;
  overflow: hidden;
}

.cw {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--bg);
  border-bottom: 1px solid var(--bdr);
  overflow: hidden;
}

.cw canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.pane-label {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 7px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  pointer-events: none;
}

.pane-label .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.pane-label .hint {
  margin-left: auto;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

.leg {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  gap: 8px;
  padding: 3px 7px;
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid var(--bdr);
  border-radius: 3px;
  backdrop-filter: blur(4px);
  color: var(--sub);
  font-size: 10px;
}

.lsw {
  display: inline-block;
  width: 12px;
  height: 2px;
  border-radius: 1px;
  vertical-align: middle;
}

.chart-ep {
  position: absolute;
  top: 6px;
  left: 8px;
  padding: 2px 7px;
  color: var(--ink);
  background: var(--s2);
  border: 1px solid var(--bdr);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.readouts {
  display: flex;
  height: 52px;
  border-top: 1px solid var(--bdr);
  overflow: hidden;
}

.ro {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 5px 7px;
  border-right: 1px solid var(--bdr);
}

.ro:last-child {
  border-right: none;
}

.ro .k {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ro .v {
  display: flex;
  align-items: baseline;
  gap: 2px;
  overflow: hidden;
  white-space: nowrap;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.ro .v .u {
  color: var(--sub);
  font-size: 9px;
  font-weight: 400;
}

.ro.cAlt .v {
  color: var(--cAlt);
}

.ro.cPit .v {
  color: var(--cPit);
}

.ro.cP .v {
  color: var(--cP);
}

.ro.cI .v {
  color: var(--cI);
}

.ro.cD .v {
  color: var(--cD);
}

.resizer {
  width: 4px;
  cursor: col-resize;
  background: var(--bdr);
  transition: background 0.15s;
}

.resizer:hover,
.resizer:active {
  background: var(--cAlt);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 5px 9px;
  color: var(--sub);
  background: var(--s2);
  border: 1px solid var(--bdr);
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  font-size: 11.5px;
  font-weight: 500;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
}

.chip:hover {
  color: var(--ink);
}

.chip.on {
  color: var(--ink);
  background: var(--s3);
  border-color: #3a4556;
}

.chip:focus-visible {
  outline: 2px solid var(--cAlt);
  outline-offset: 2px;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--s3);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]:focus-visible {
  outline: 2px solid var(--cAlt);
  outline-offset: 4px;
  border-radius: 2px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  cursor: grab;
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--ink);
  cursor: grab;
}

input[type="range"].alt::-webkit-slider-thumb,
input[type="range"].alt::-moz-range-thumb {
  background: var(--cAlt);
}

input[type="range"].pit::-webkit-slider-thumb,
input[type="range"].pit::-moz-range-thumb {
  background: var(--cPit);
}

input[type="number"] {
  width: 58px;
  padding: 4px 6px;
  color: var(--ink);
  background: var(--s2);
  border: 1px solid var(--bdr);
  border-radius: 4px;
  text-align: right;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

input[type="number"]:focus {
  outline: 1px solid var(--cAlt);
}

.tog {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 3px 0;
  color: var(--sub);
  cursor: pointer;
  font-size: 12px;
}

.tog:hover {
  color: var(--ink);
}

.tog input {
  accent-color: var(--cAlt);
  cursor: pointer;
}

.hdr {
  display: flex;
  align-items: center;
  gap: 0;
  height: var(--hdr-h);
  padding: 0 14px;
  background: var(--s1);
  border-bottom: 1px solid var(--bdr);
  flex-shrink: 0;
}

.hdr-logo {
  padding-right: 14px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.hdr-logo span {
  color: var(--sub);
  font-weight: 400;
}

.vsep {
  width: 1px;
  height: 18px;
  margin: 0 12px;
  background: var(--bdr);
  flex-shrink: 0;
}

.hdr-meta {
  display: flex;
  gap: 18px;
  flex: 1;
}

.hdr-meta .item {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--sub);
  font-size: 11.5px;
}

.hdr-meta .item b {
  color: var(--ink);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.led {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
  flex-shrink: 0;
}

.led.off {
  background: var(--warn);
}

.hdr-btns {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

.btn {
  min-height: 30px;
  padding: 5px 11px;
  color: var(--sub);
  background: var(--s2);
  border: 1px solid var(--bdr);
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: color 0.1s, border-color 0.1s, background 0.1s;
}

.btn:hover {
  color: var(--ink);
  border-color: var(--s3);
}

.btn:active {
  opacity: 0.8;
}

.btn:focus-visible {
  outline: 2px solid var(--cAlt);
  outline-offset: 2px;
}

.btn-tune {
  color: var(--ink);
  background: var(--s3);
  border-color: #3a4556;
  letter-spacing: 0.02em;
}

.viz-pane .pane-label {
  font-family: var(--font-ui);
}

.drawer {
  width: 0;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--s1);
  border-right: 1px solid var(--bdr);
  transition: width 0.22s ease;
  scrollbar-width: thin;
  scrollbar-color: var(--s3) transparent;
}

.drawer.open {
  width: var(--drawer-w);
  overflow-x: hidden;
  overflow-y: auto;
}

.drawer > * {
  min-width: var(--drawer-w);
}

.d-section {
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--bdr);
}

.d-title {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.d-aside {
  margin-left: auto;
  color: var(--sub);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.gain-row {
  display: grid;
  grid-template-columns: 26px 1fr 46px;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.gain-row:last-child {
  margin-bottom: 0;
}

.gain-lbl {
  color: var(--sub);
  font-size: 12px;
  font-weight: 600;
}

.gain-lbl.P {
  color: var(--cP);
}

.gain-lbl.I {
  color: var(--cI);
}

.gain-lbl.D {
  color: var(--cD);
}

.gain-val {
  padding: 3px 5px;
  color: var(--ink);
  background: var(--s2);
  border: 1px solid var(--bdr);
  border-radius: 4px;
  text-align: right;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.d-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  color: var(--sub);
  font-size: 12px;
}

.tog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 8px;
}

@media (prefers-reduced-motion: reduce) {
  .chip,
  .btn,
  .drawer {
    transition: none !important;
  }
}

@media (max-width: 900px) {
  .layout {
    flex-direction: column;
    height: auto;
  }

  .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    height: auto;
  }

  .resizer {
    display: none;
  }

  .axis-col {
    grid-template-rows: 280px minmax(0, 1fr) minmax(0, 1fr) 52px;
    height: auto;
  }

  .drawer {
    width: 100%;
    height: 0;
    border-right: none;
    border-top: 1px solid var(--bdr);
    transition: height 0.22s ease;
  }

  .drawer.open {
    width: 100%;
    height: auto;
  }

  .drawer > * {
    min-width: 0;
  }
}