/* webgl2.html — WebGL2 Capability Lab (instancing + MRT workflow viz) */

.doc-wgl2cap {
  margin: 1.05rem 0 0;
  border-radius: 16px;
  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);
  overflow: hidden;
}

.doc-wgl2cap__stage {
  padding: 0.5rem 0.55rem 0.55rem;
  background: radial-gradient(110% 85% at 50% 8%, rgba(46, 231, 242, 0.07) 0%, transparent 52%),
    rgba(5, 8, 18, 0.52);
  border-bottom: 1px solid rgba(110, 150, 210, 0.14);
}

.doc-wgl2cap__viewport {
  position: relative;
  margin: 0 auto;
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(110, 150, 210, 0.18);
  background: radial-gradient(120% 100% at 50% 85%, rgba(26, 40, 72, 0.55) 0%, rgba(5, 10, 22, 0.78) 62%);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  min-height: min(48vw, 400px);
}

.doc-wgl2cap__viewport canvas[data-wgl2cap-canvas] {
  width: 100%;
  height: 100%;
  display: block;
  vertical-align: top;
  cursor: default;
  touch-action: none;
}

.doc-wgl2cap__hud {
  position: absolute;
  right: 0.55rem;
  top: 0.55rem;
  z-index: 2;
  max-width: min(42rem, calc(100% - 1.1rem));
  padding: 0.32rem 0.48rem;
  border-radius: 12px;
  border: 1px solid rgba(120, 190, 255, 0.22);
  background: linear-gradient(165deg, rgba(18, 28, 48, 0.58) 0%, rgba(10, 14, 28, 0.82) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.35) inset,
    0 8px 24px rgba(0, 0, 0, 0.35);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.61rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(210, 235, 255, 0.92);
  pointer-events: none;
  line-height: 1.35;
}

.doc-wgl2cap__panel {
  padding: 0.6rem 0.75rem 0.7rem;
  background: rgba(5, 8, 18, 0.28);
  border-bottom: 1px solid rgba(110, 150, 210, 0.12);
}

.doc-wgl2cap__controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin-bottom: 0.55rem;
}

.doc-wgl2cap__field {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.doc-wgl2cap__lbl {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(170, 195, 235, 0.82);
}

.doc-wgl2cap__select {
  min-width: 12.5rem;
  border-radius: 10px;
  border: 1px solid rgba(110, 150, 210, 0.2);
  background: rgba(5, 10, 22, 0.75);
  color: rgba(210, 228, 255, 0.94);
  padding: 0.35rem 0.45rem;
  font-size: 0.82rem;
}

.doc-wgl2cap__chk {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  font-size: 0.78rem;
  color: rgba(190, 208, 240, 0.88);
  cursor: pointer;
  user-select: none;
}

.doc-wgl2cap__chk input {
  accent-color: rgba(46, 231, 242, 0.85);
}

.doc-wgl2cap__stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11.5rem, 1fr));
  gap: 0.4rem 0.85rem;
  padding: 0.5rem 0.55rem;
  border-radius: 12px;
  border: 1px solid rgba(110, 150, 210, 0.12);
  background: rgba(8, 14, 28, 0.42);
}

.doc-wgl2cap__stat {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.65rem;
  align-items: baseline;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
}

.doc-wgl2cap__stat-k {
  color: rgba(150, 185, 230, 0.62);
  text-transform: uppercase;
  font-weight: 800;
}

.doc-wgl2cap__stat-v {
  color: rgba(210, 235, 255, 0.94);
  font-weight: 700;
  text-align: right;
}

.doc-wgl2cap__caption {
  margin: 0;
  padding: 0.72rem 0.85rem 0.82rem;
  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 (max-width: 560px) {
  .doc-wgl2cap__stage {
    padding: 0.42rem 0.48rem 0.48rem;
  }

  .doc-wgl2cap__viewport {
    min-height: 220px;
  }

  .doc-wgl2cap__panel {
    padding: 0.5rem 0.55rem 0.58rem;
  }

  .doc-wgl2cap__select {
    min-width: 100%;
  }
}