/* gpu-and-render-pipeline — Pipeline Step Visualizer (ham WebGL) */

#gpu-pipeline-step-visualizer {
  scroll-margin-top: 5rem;
}

.doc-section--pipeline-viz .doc-section__num--lab {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.75;
  letter-spacing: 0;
}

.doc-gpu-pipeline-viz {
  margin: 1.2rem 0 0;
  padding: 0;
  border-radius: 14px;
  border: 1px solid rgba(94, 180, 255, 0.26);
  background: linear-gradient(168deg,
      rgba(16, 22, 42, 0.82) 0%,
      rgba(10, 14, 28, 0.72) 48%,
      rgba(18, 14, 36, 0.78) 100%);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.42) inset,
    0 12px 38px rgba(0, 0, 0, 0.38),
    0 0 42px rgba(46, 231, 242, 0.05);
  overflow: hidden;
}

.doc-gpu-pipeline-viz__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(272px, 1fr);
  gap: 0;
  align-items: stretch;
}

@media (max-width: 880px) {
  .doc-gpu-pipeline-viz__layout {
    grid-template-columns: 1fr;
  }
}

.doc-gpu-pipeline-viz__canvas-wrap {
  position: relative;
  padding: 0.85rem 0.85rem 1rem;
  border-right: 1px solid rgba(110, 150, 210, 0.12);
  background: radial-gradient(110% 85% at 50% 12%,
      rgba(46, 231, 242, 0.06) 0%,
      transparent 52%),
    rgba(5, 8, 18, 0.52);
}

@media (max-width: 880px) {
  .doc-gpu-pipeline-viz__canvas-wrap {
    border-right: none;
    border-bottom: 1px solid rgba(110, 150, 210, 0.12);
  }
}

.doc-gpu-pipeline-viz__canvas-inner {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  min-height: 200px;
  max-height: min(50vw, 360px);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(130, 170, 230, 0.22);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.38) inset,
    0 8px 26px rgba(0, 0, 0, 0.42);
}

.doc-gpu-pipeline-viz__canvas-inner canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.doc-gpu-pipeline-viz__canvas-hint {
  margin: 0.55rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-weight: 600;
  color: rgba(150, 185, 235, 0.72);
}

.doc-gpu-pipeline-viz__deck {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.85rem 0.95rem 1rem;
  min-height: 0;
}

.doc-gpu-pipeline-viz__deck-head {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: rgba(210, 195, 255, 0.88);
}

.doc-gpu-pipeline-viz__phase {
  margin: 0;
  padding: 0.42rem 0.58rem;
  border-radius: 8px;
  border: 1px solid rgba(181, 108, 255, 0.35);
  background: linear-gradient(
    92deg,
    rgba(46, 231, 242, 0.1) 0%,
    rgba(94, 200, 255, 0.06) 42%,
    rgba(181, 108, 255, 0.11) 100%);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(238, 242, 255, 0.98);
  line-height: 1.35;
}

.doc-gpu-pipeline-viz__readout {
  margin: 0;
  padding: 0.55rem 0.62rem;
  border-radius: 10px;
  border: 1px solid rgba(94, 200, 255, 0.14);
  background: rgba(8, 12, 26, 0.55);
  font-size: 0.82rem;
  line-height: 1.48;
  color: rgba(188, 208, 240, 0.92);
  transition:
    border-color 0.35s ease,
    box-shadow 0.35s ease;
}

.doc-gpu-pipeline-viz__readout.is-gpv-step-flash {
  animation: gpv-readout-flash 0.56s ease-out;
}

.doc-gpu-pipeline-viz__canvas-inner.is-gpv-step-flash {
  animation: gpv-canvas-flash 0.56s ease-out;
}

@keyframes gpv-readout-flash {
  0% {
    border-color: rgba(94, 200, 255, 0.14);
    box-shadow: 0 0 0 rgba(46, 231, 242, 0);
  }

  38% {
    border-color: rgba(120, 220, 255, 0.78);
    box-shadow:
      0 0 0 1px rgba(46, 231, 242, 0.22),
      0 0 26px rgba(46, 231, 242, 0.28);
  }

  100% {
    border-color: rgba(94, 200, 255, 0.14);
    box-shadow: 0 0 0 rgba(46, 231, 242, 0);
  }
}

@keyframes gpv-canvas-flash {
  0% {
    border-color: rgba(130, 170, 230, 0.22);
    box-shadow:
      0 0 0 1px rgba(0, 0, 0, 0.38) inset,
      0 8px 26px rgba(0, 0, 0, 0.42);
  }

  40% {
    border-color: rgba(94, 210, 255, 0.62);
    box-shadow:
      0 0 0 1px rgba(46, 231, 242, 0.35) inset,
      0 0 22px rgba(46, 231, 242, 0.22),
      0 10px 28px rgba(0, 0, 0, 0.48);
  }

  100% {
    border-color: rgba(130, 170, 230, 0.22);
    box-shadow:
      0 0 0 1px rgba(0, 0, 0, 0.38) inset,
      0 8px 26px rgba(0, 0, 0, 0.42);
  }
}

.doc-gpu-pipeline-viz__consequence {
  display: block;
  margin-top: 0.48rem;
  padding-top: 0.42rem;
  border-top: 1px solid rgba(110, 150, 210, 0.14);
  font-size: 0.78rem;
  line-height: 1.46;
  font-weight: 500;
  color: rgba(175, 205, 248, 0.82);
}

.doc-gpu-pipeline-viz__readout code {
  font-size: 0.84em;
  font-weight: 600;
  color: rgba(120, 215, 248, 0.92);
}

.doc-gpu-pipeline-viz__error {
  margin: 0;
  padding: 0.55rem 0.62rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 120, 120, 0.35);
  background: rgba(80, 24, 28, 0.35);
  color: rgba(255, 210, 210, 0.94);
  font-size: 0.82rem;
}

.doc-gpu-pipeline-viz__steps-label,
.doc-gpu-pipeline-viz__layers-label {
  margin: 0.15rem 0 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(140, 205, 255, 0.72);
}

.doc-gpu-pipeline-viz__steps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
}

.doc-gpu-pipeline-viz__step-btn {
  margin: 0;
  padding: 0.38rem 0.52rem;
  border-radius: 999px;
  border: 1px solid rgba(130, 168, 225, 0.44);
  background: linear-gradient(168deg,
      rgba(26, 34, 54, 0.92) 0%,
      rgba(12, 18, 36, 0.82) 100%);
  color: rgba(185, 210, 245, 0.94);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    color 0.18s ease,
    opacity 0.18s ease;
}

.doc-gpu-pipeline-viz__step-btn:hover {
  border-color: rgba(120, 205, 255, 0.55);
  color: rgba(235, 242, 255, 0.98);
}

.doc-gpu-pipeline-viz__step-btn:focus-visible {
  outline: 2px solid rgba(46, 231, 242, 0.55);
  outline-offset: 2px;
}

.doc-gpu-pipeline-viz__step-btn.is-active {
  border-color: rgba(58, 175, 215, 0.55);
  background: linear-gradient(152deg,
      rgba(40, 86, 135, 0.72) 0%,
      rgba(42, 52, 118, 0.62) 55%,
      rgba(72, 46, 118, 0.62) 100%);
  color: #fff;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.35) inset,
    0 0 18px rgba(46, 231, 242, 0.12);
}

.doc-gpu-pipeline-viz__layers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
}

.doc-gpu-pipeline-viz__layer-btn {
  margin: 0;
  padding: 0.32rem 0.48rem;
  border-radius: 8px;
  border: 1px solid rgba(110, 145, 195, 0.28);
  background: rgba(10, 14, 28, 0.62);
  color: rgba(175, 198, 235, 0.82);
  font: inherit;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    border-color 0.18s ease,
    background 0.18s ease,
    color 0.18s ease,
    opacity 0.18s ease;
}

.doc-gpu-pipeline-viz__layer-btn:hover:not(:disabled) {
  border-color: rgba(140, 190, 255, 0.4);
  color: rgba(225, 235, 255, 0.95);
}

.doc-gpu-pipeline-viz__layer-btn:focus-visible {
  outline: 2px solid rgba(46, 231, 242, 0.45);
  outline-offset: 2px;
}

.doc-gpu-pipeline-viz__layer-btn.is-on {
  border-color: rgba(46, 231, 242, 0.42);
  background: rgba(22, 42, 72, 0.72);
  color: rgba(210, 238, 255, 0.98);
}

.doc-gpu-pipeline-viz__layer-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.doc-gpu-pipeline-viz figcaption {
  margin: 0;
  padding: 0.65rem 1rem 0.85rem;
  font-size: 0.82rem;
  line-height: 1.52;
  color: rgba(165, 188, 228, 0.82);
  border-top: 1px solid rgba(110, 150, 210, 0.1);
}

@media (prefers-reduced-motion: reduce) {

  .doc-gpu-pipeline-viz__step-btn,
  .doc-gpu-pipeline-viz__layer-btn {
    transition: none;
  }

  .doc-gpu-pipeline-viz__readout.is-gpv-step-flash,
  .doc-gpu-pipeline-viz__canvas-inner.is-gpv-step-flash {
    animation: none;
  }

  .doc-gpu-pipeline-viz__readout {
    transition: none;
  }
}