/* Instruments — hero signal workbench, DeskPulse lab, churn predictor */

/* —— Hero signal workbench —— */
.scope {
  position: relative;
  z-index: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 100%;
  min-width: 0;
}

.scope__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  overflow: hidden;
  isolation: isolate;
  cursor: crosshair;
  touch-action: none;
}

.scope__frame.is-dragging {
  cursor: ns-resize;
  border-color: var(--accent-dim);
}

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

.scope__layer {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.scope__grid {
  z-index: 0;
}

.scope__trace {
  z-index: 1;
}

.scope__readout {
  position: absolute;
  z-index: 2;
  left: var(--space-3);
  top: var(--space-3);
  margin: 0;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  white-space: pre;
  color: color-mix(in srgb, var(--accent) 85%, var(--ink));
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  border-radius: var(--radius-sm);
  pointer-events: none;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: calc(100% - var(--space-6));
}

.scope__bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.scope__mode {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.12em;
  overflow: hidden;
  transition:
    border-color 180ms var(--ease-out),
    color 180ms var(--ease-out);
}

.scope__mode:hover {
  border-color: var(--accent-dim);
}

.scope__mode-key {
  padding: 0.3rem 0.45rem;
  background: var(--surface-2);
  color: var(--ink-muted);
  border-right: 1px solid var(--line);
}

.scope__mode-value {
  padding: 0.3rem 0.6rem;
  color: var(--accent);
  min-width: 6.4em;
  text-align: left;
}

.scope__hint {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.scope__state {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
}

.scope__state::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.45;
}

.scope__state.is-live {
  color: var(--ink);
}

.scope__state.is-live::before {
  opacity: 1;
}

@media (max-width: 900px) {
  .scope__frame {
    aspect-ratio: 16 / 9;
  }

  .scope__hint {
    display: none;
  }
}

/* —— DeskPulse DSP lab —— */
.dsp {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-top: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface-2) 55%, transparent);
}

.dsp[hidden] {
  display: none;
}

.dsp__block {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.dsp__legend {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.dsp__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
  cursor: pointer;
  transition:
    color 160ms var(--ease-out),
    border-color 160ms var(--ease-out),
    background-color 160ms var(--ease-out);
}

.chip:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
}

.chip.is-active,
.chip[aria-pressed="true"] {
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.dsp__grid {
  display: grid;
  gap: var(--space-2);
}

.dsp__row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr) 4rem;
  align-items: center;
  gap: var(--space-3);
}

.dsp__label,
.dsp__value {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.dsp__value {
  text-align: right;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.dsp__range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  min-width: 0;
  height: 1.25rem;
  background: transparent;
  cursor: pointer;
}

.dsp__range::-webkit-slider-runnable-track {
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(
    to right,
    var(--accent) 0 var(--fill, 50%),
    var(--line) var(--fill, 50%) 100%
  );
}

.dsp__range::-moz-range-track {
  height: 2px;
  border-radius: 2px;
  background: var(--line);
}

.dsp__range::-moz-range-progress {
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.dsp__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 0.75rem;
  height: 0.75rem;
  margin-top: -0.35rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
}

.dsp__range::-moz-range-thumb {
  width: 0.7rem;
  height: 0.7rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
}

.dsp__range:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.dsp__band {
  margin: -0.15rem 0 0.15rem 5.5rem;
  max-width: 46ch;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
  color: var(--accent);
}

.dsp__waves {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  grid-column: 2 / -1;
}

.dsp__row:has(.dsp__waves) {
  grid-template-columns: 5.5rem minmax(0, 1fr);
}

.dsp__why {
  border-top: 1px solid var(--line);
  padding-top: var(--space-3);
}

.dsp__why > summary {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  cursor: pointer;
  list-style: none;
}

.dsp__why > summary::-webkit-details-marker {
  display: none;
}

.dsp__why > summary::before {
  content: "+ ";
}

.dsp__why[open] > summary::before {
  content: "− ";
}

.dsp__why > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.dsp__why p {
  margin: var(--space-3) 0 0;
  max-width: 60ch;
  font-size: var(--step--1);
  line-height: 1.65;
  color: var(--ink-muted);
}

@media (max-width: 560px) {
  .dsp__row {
    grid-template-columns: 4.75rem minmax(0, 1fr) 3.5rem;
    gap: var(--space-2);
  }

  .dsp__band {
    margin-left: 4.75rem;
  }
}

/* —— Churn explorer —— */
.churn {
  margin-top: var(--space-7);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.churn__tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
}

.churn__tab {
  padding: var(--space-3) var(--space-5);
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

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

.churn__tab.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.churn__tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

.churn__disclaimer {
  margin: 0;
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--warn) 8%, transparent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--ink-muted);
}

.churn__panel {
  padding: var(--space-5);
}

.churn__panel[hidden] {
  display: none;
}

.churn__panel:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -4px;
}

.churn__split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: var(--space-6);
  align-items: center;
}

.churn__select {
  width: 100%;
  min-width: 0;
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
}

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

.churn__result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.churn__gauge {
  width: min(100%, 15rem);
}

.gauge {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.gauge__track {
  stroke: var(--line);
  stroke-width: 8;
  stroke-linecap: round;
}

.gauge__value {
  stroke: var(--ok);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke 260ms var(--ease-out);
}

.gauge.is-mid .gauge__value {
  stroke: var(--warn);
}

.gauge.is-high .gauge__value {
  stroke: var(--accent);
}

.gauge__tick {
  stroke: var(--line);
  stroke-width: 1.5;
}

.gauge__marker {
  fill: var(--bg);
  stroke: var(--ok);
  stroke-width: 2.5;
  transition: stroke 260ms var(--ease-out);
}

.gauge.is-mid .gauge__marker {
  stroke: var(--warn);
}

.gauge.is-high .gauge__marker {
  stroke: var(--accent);
}

.gauge__number {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 22px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.gauge__caption,
.gauge__tick-label {
  fill: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.14em;
}

.churn__logit {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  text-align: center;
}

.churn__contrib {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
}

.contrib {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.contrib__row {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) 3.5rem;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
}

.contrib__label {
  color: var(--ink-muted);
}

.contrib__track {
  display: block;
  height: 6px;
  border-radius: 1px;
  background: color-mix(in srgb, var(--line) 60%, transparent);
  overflow: hidden;
}

.contrib__bar {
  display: block;
  height: 100%;
  border-radius: 1px;
  transition: width 240ms var(--ease-out);
}

.contrib__row.is-up .contrib__bar {
  background: var(--warn);
}

.contrib__row.is-down .contrib__bar {
  background: var(--ok);
}

.contrib__value {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.contrib__row.is-up .contrib__value {
  color: var(--warn);
}

.contrib__row.is-down .contrib__value {
  color: var(--ok);
}

.churn__key {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-4) 0 0;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
}

.churn__key-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.churn__key-item::before {
  content: "";
  width: 0.7rem;
  height: 0.35rem;
  border-radius: 1px;
  background: currentColor;
}

.churn__key-item--up {
  color: var(--warn);
}

.churn__key-item--down {
  color: var(--ok);
}

.churn__lede {
  margin: 0 0 var(--space-5);
  max-width: 62ch;
  font-size: var(--step--1);
  line-height: 1.7;
  color: var(--ink-muted);
}

.churn__threshold {
  max-width: 30rem;
  margin-bottom: var(--space-5);
}

.churn__hist,
.churn__matrix {
  width: min(100%, 34rem);
  margin-inline: auto;
}

.hist {
  display: block;
  width: 100%;
  height: auto;
}

.hist__label {
  fill: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: 0.12em;
}

.hist__stay {
  fill: var(--ok);
  fill-opacity: 0.75;
}

.hist__churn {
  fill: var(--warn);
  fill-opacity: 0.75;
}

.hist__axis {
  stroke: var(--line);
  stroke-width: 1;
}

.hist__threshold {
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 3 3;
}

.matrix {
  display: block;
  width: 100%;
  height: auto;
  margin-top: var(--space-4);
}

.matrix__head {
  fill: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
}

.matrix__tag {
  fill: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.matrix__count {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 19px;
  font-variant-numeric: tabular-nums;
}

.matrix__cell.is-good .matrix__fill {
  fill: var(--ok);
}

.matrix__cell.is-bad .matrix__fill {
  fill: var(--warn);
}

.churn__metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
}

.churn__metrics > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.churn__metrics dt {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.churn__metrics dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-0);
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.churn__hintline {
  margin: var(--space-4) 0 0;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--ink-muted);
}

@media (max-width: 760px) {
  .churn__split {
    grid-template-columns: 1fr;
  }

  .contrib__row {
    grid-template-columns: 7rem minmax(0, 1fr) 3.2rem;
    gap: var(--space-2);
  }

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

@media (prefers-reduced-motion: reduce) {
  .contrib__bar,
  .gauge__value {
    transition: none;
  }
}

/* No module layer (opened as file://) — say so instead of showing a dead box. */
.no-js-modules .scope__bar,
.no-js-modules .scope__readout {
  display: none;
}

.no-js-modules .scope__frame {
  cursor: default;
}

.no-js-modules .scope__frame::after {
  content: "INTERACTIVE LAYER NEEDS A LOCAL SERVER — file:// BLOCKS ES MODULES";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  line-height: 1.8;
  color: var(--ink-muted);
}