/**
 * cpu-vs-gpu-bottleneck.html — Frame Time Split Visualizer.
 */

.doc-frame-split {
  margin: 1rem 0 0;
  padding: 0.95rem 0.95rem 1.05rem;
  border-radius: 16px;
  border: 1px solid rgba(120, 200, 255, 0.22);
  background: linear-gradient(
    152deg,
    rgba(6, 10, 22, 0.55) 0%,
    rgba(4, 8, 18, 0.52) 40%,
    rgba(8, 12, 28, 0.58) 100%
  );
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
    0 16px 44px rgba(0, 0, 0, 0.42);
}

.doc-frame-split__caption {
  margin: 0 0 0.55rem;
  font-size: 0.82rem;
  line-height: 1.55;
  color: rgba(205, 215, 235, 0.92);
}

.doc-frame-split__badge {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(120, 200, 255, 0.25);
  background: rgba(4, 10, 24, 0.62);
  color: rgba(190, 225, 255, 0.92);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: 0.35rem;
}

.doc-frame-split__tag {
  margin: 0 0 0.7rem;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(130, 200, 255, 0.92);
}

/* Top: visual + controls; bottom: full-width insight */
.doc-frame-split__grid {
  display: grid;
  gap: 0.85rem 0.95rem;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: start;
}

.doc-frame-split__viz {
  grid-column: 1;
  grid-row: 1;
  position: relative;
  border-radius: 14px;
  overflow: clip;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: radial-gradient(circle at 30% 25%, rgba(60, 120, 200, 0.22), rgba(8, 10, 16, 0.85) 70%);
}

.doc-frame-split__panel--side {
  grid-column: 2;
  grid-row: 1;
}

.doc-frame-split__insight {
  grid-column: 1 / -1;
  grid-row: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 0.75rem 1rem;
  align-items: stretch;
  padding: 0.8rem 0.85rem 0.85rem;
  border-radius: 14px;
  border: 1px solid rgba(120, 200, 255, 0.2);
  background: linear-gradient(168deg, rgba(4, 10, 22, 0.55) 0%, rgba(2, 6, 16, 0.62) 100%);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}

.doc-frame-split__insight-kicker {
  margin: 0 0 0.4rem;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(130, 200, 255, 0.95);
}

/* Math-style rule (no KaTeX on site): readable, print-like typography */
.doc-frame-split__math {
  margin: 0 0 0.55rem;
  padding: 0.45rem 0.5rem 0.5rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(0, 0, 0, 0.18);
  font-family: "Cambria Math", "STIX Two Math", "Latin Modern Math", "Times New Roman", Times, ui-serif, Georgia,
    serif;
  font-size: 0.88rem;
  line-height: 1.45;
  font-weight: 500;
  color: rgba(215, 225, 245, 0.98);
  font-variant-numeric: lining-nums proportional-nums;
}

.doc-frame-split__math-line {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.35rem;
}

.doc-frame-split__math-line + .doc-frame-split__math-line {
  margin-top: 0.45rem;
  padding-top: 0.45rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.doc-frame-split__math-line--fps {
  align-items: center;
}

.doc-frame-split__math-text {
  font-style: normal;
  letter-spacing: 0.01em;
}

.doc-frame-split__math-fn {
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.doc-frame-split__math-op,
.doc-frame-split__math-approx {
  font-style: normal;
  font-weight: 600;
  opacity: 0.95;
}

.doc-frame-split__math-approx {
  margin: 0 0.05rem 0 0.1rem;
  font-size: 1.05em;
}

.doc-frame-split__math-punct {
  opacity: 0.92;
}

.doc-frame-split__math-frac {
  display: inline-grid;
  grid-template-rows: auto auto auto;
  justify-items: center;
  align-items: center;
  vertical-align: middle;
  margin-left: 0.15rem;
  min-width: 3.25rem;
}

.doc-frame-split__math-frac__num {
  font-size: 0.82em;
  line-height: 1.1;
  font-weight: 600;
}

.doc-frame-split__math-frac__rule {
  width: 100%;
  min-width: 2.75rem;
  height: 0.07rem;
  margin: 0.08rem 0;
  background: rgba(220, 230, 250, 0.88);
  border-radius: 1px;
}

.doc-frame-split__math-frac__den {
  font-size: 0.78em;
  line-height: 1.15;
  font-style: italic;
  opacity: 0.95;
}

.doc-frame-split__insight-copy {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.55;
  font-weight: 650;
  color: rgba(200, 215, 240, 0.95);
}

.doc-frame-split__insight-copy p {
  margin: 0 0 0.5rem;
}

.doc-frame-split__insight-copy p:last-child {
  margin-bottom: 0;
}

.doc-frame-split__insight-col--rule .doc-frame-split__meter--frame {
  margin-top: 0.15rem;
}

.doc-frame-split__bridge--insight {
  grid-column: 1 / -1;
  margin: 0.35rem 0 0;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
  border: 1px solid rgba(120, 200, 255, 0.14);
  background: rgba(0, 0, 0, 0.2);
}

.doc-frame-split__canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
}

.doc-frame-split__panel {
  display: grid;
  gap: 0.75rem;
}

.doc-frame-split__controls {
  padding: 0.7rem 0.75rem 0.8rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.18);
}

.doc-frame-split__label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: rgba(210, 220, 240, 0.95);
}

.doc-frame-split__label:last-of-type {
  margin-bottom: 0.5rem;
}

.doc-frame-split__range-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.doc-frame-split__range {
  width: 100%;
  accent-color: #8cb4ff;
}

.doc-frame-split__out {
  min-width: 3.8rem;
  text-align: right;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: rgba(240, 240, 255, 0.92);
}

.doc-frame-split__presets {
  display: grid;
  gap: 0.45rem;
}

.doc-frame-split__preset {
  appearance: none;
  border: 1px solid rgba(140, 180, 255, 0.22);
  background: rgba(4, 10, 24, 0.35);
  color: rgba(220, 232, 248, 0.92);
  border-radius: 12px;
  padding: 0.55rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.01em;
  text-align: left;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.doc-frame-split__preset:hover {
  transform: translateY(-1px);
  border-color: rgba(140, 200, 255, 0.35);
  background: rgba(6, 14, 34, 0.42);
}

.doc-frame-split__preset:active {
  transform: translateY(0px);
}

.doc-frame-split__meters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
  align-items: start;
}

.doc-frame-split__meters--side {
  grid-template-columns: 1fr 1fr 1fr;
}

.doc-frame-split__meter {
  padding: 0.65rem 0.7rem;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.18);
}

.doc-frame-split__meter-title {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: rgba(200, 210, 235, 0.92);
}

.doc-frame-split__meter-demo-cap {
  margin: 0.2rem 0 0;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(160, 185, 220, 0.88);
  line-height: 1.3;
}

.doc-frame-split__meter-val {
  margin: 0.25rem 0 0;
  font-size: clamp(1.05rem, 2.8vw, 1.4rem);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: rgba(140, 210, 255, 0.98);
  line-height: 1.15;
}

.doc-frame-split__meter--frame .doc-frame-split__meter-val {
  color: rgba(120, 235, 210, 0.98);
}

.doc-frame-split--dom-cpu .doc-frame-split__meter--frame .doc-frame-split__meter-val {
  color: rgba(140, 210, 255, 0.98);
}

.doc-frame-split--dom-gpu .doc-frame-split__meter--frame .doc-frame-split__meter-val {
  color: rgba(255, 120, 210, 0.98);
}

.doc-frame-split--dom-balanced .doc-frame-split__meter--frame .doc-frame-split__meter-val {
  color: rgba(120, 235, 210, 0.98);
}

.doc-frame-split__meter--fps .doc-frame-split__meter-val {
  color: rgba(120, 235, 210, 0.98);
}

.doc-frame-split__meter-sub {
  margin: 0.35rem 0 0;
  font-size: 0.62rem;
  line-height: 1.45;
  font-weight: 600;
  color: rgba(175, 195, 225, 0.88);
}

.doc-frame-split__meter-sub:empty {
  display: none;
}

.doc-frame-split__bound {
  margin: 0;
  padding: 0.5rem 0.55rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.22);
  font-size: 0.76rem;
  line-height: 1.5;
  font-weight: 650;
  color: rgba(205, 218, 245, 0.95);
}

.doc-frame-split__bound--panel {
  flex: 1;
  min-height: 4.5rem;
}

.doc-frame-split__insight-col--bound {
  display: flex;
  flex-direction: column;
}

.doc-frame-split__bound strong {
  color: rgba(150, 210, 255, 0.98);
  font-weight: 800;
}

.doc-frame-split__bridge {
  margin: 0;
  padding: 0.6rem 0.7rem;
  border-radius: 12px;
  border: 1px solid rgba(120, 200, 255, 0.16);
  background: rgba(4, 10, 24, 0.35);
  font-size: 0.78rem;
  line-height: 1.55;
  color: rgba(200, 218, 245, 0.94);
}

.doc-frame-split__bridge strong {
  color: rgba(150, 210, 255, 0.98);
  font-weight: 650;
}

@media (max-width: 900px) {
  .doc-frame-split__grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .doc-frame-split__viz {
    grid-column: 1;
    grid-row: auto;
  }

  .doc-frame-split__panel--side {
    grid-column: 1;
    grid-row: auto;
  }

  .doc-frame-split__insight {
    grid-column: 1;
    grid-row: auto;
    grid-template-columns: 1fr;
  }

  .doc-frame-split__meters--side {
    grid-template-columns: 1fr 1fr;
  }

  .doc-frame-split__meters--side .doc-frame-split__meter--fps {
    grid-column: 1 / -1;
  }
}

@media (min-width: 901px) and (max-width: 1100px) {
  .doc-frame-split__insight {
    grid-template-columns: 1fr 1fr;
  }

  .doc-frame-split__insight-col--bound {
    grid-column: 1 / -1;
  }
}