.lab-wrap {
  --lab-accent: var(--accent);
  --lab-border-strong: color-mix(in srgb, var(--lab-accent) 30%, var(--border));
  display: grid;
  gap: 1rem;
}

.lab-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  align-items: center;
  padding: clamp(0.9rem, 2vw, 1.4rem);
  border-radius: 1rem;
  border: 1px solid var(--lab-border-strong);
  background:
    linear-gradient(
      145deg,
      color-mix(in srgb, var(--surface) 80%, var(--lab-accent) 20%),
      color-mix(in srgb, var(--surface-soft) 92%, #ffffff 8%)
    );
  box-shadow: var(--shadow);
  overflow: hidden;
}

.lab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/assets/backgrounds/subtle-grid.svg"), url("/assets/backgrounds/soft-gradient-tile.svg");
  background-size: 240px 240px, 420px 420px;
  background-repeat: repeat, no-repeat;
  background-position: center, 95% 28%;
  opacity: 0.42;
  pointer-events: none;
  z-index: -1;
}

.lab-hero-copy h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  line-height: 1.2;
}

.lab-hero-copy p {
  margin: 0.6rem 0 0;
  color: var(--muted);
}

.lab-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.55rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--lab-border-strong);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  color: color-mix(in srgb, var(--lab-accent) 76%, var(--text));
  letter-spacing: 0.04em;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  width: fit-content;
}

.lab-kicker img {
  width: 0.95rem;
  height: 0.95rem;
}

.lab-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.lab-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--lab-border-strong);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
}

.lab-chip img {
  width: 0.95rem;
  height: 0.95rem;
}

.lab-hero-art {
  margin: 0;
  display: grid;
  justify-items: end;
}

.lab-hero-art img {
  width: min(100%, 300px);
  height: auto;
  display: block;
  border-radius: 0.8rem;
  border: 1px solid var(--lab-border-strong);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.lab-wrap .controls,
.lab-wrap .panel,
.lab-wrap details.help,
.lab-wrap details.notes,
.lab-wrap .attribution {
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

.lab-wrap .controls,
.lab-wrap .panel,
.lab-wrap .attribution {
  padding: 0.9rem;
}

.lab-wrap details.help,
.lab-wrap details.notes {
  padding: 0.7rem 0.85rem;
}

.lab-wrap details.help summary,
.lab-wrap details.notes summary {
  cursor: pointer;
  font-weight: 700;
}

.lab-wrap .helpBody {
  margin-top: 0.65rem;
  color: var(--muted);
}

.lab-wrap .small,
.lab-wrap .note,
.lab-wrap .metrics {
  color: var(--muted);
}

.lab-wrap .metrics {
  margin-top: 0.7rem;
}

.lab-wrap .row {
  gap: 0.75rem;
}

.lab-wrap .row label {
  color: var(--text);
}

.lab-wrap :is(input, select, button) {
  font: inherit;
}

.lab-wrap :is(input, select) {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 0.5rem;
  padding: 0.28rem 0.45rem;
}

.lab-wrap button {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--surface-soft);
  color: var(--text);
  padding: 0.36rem 0.62rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background-color 140ms ease;
}

.lab-wrap button:hover {
  border-color: var(--lab-border-strong);
  background: color-mix(in srgb, var(--surface-soft) 76%, var(--lab-accent) 24%);
}

.lab-wrap button:active {
  transform: translateY(1px);
}

.lab-wrap .notes {
  margin-top: 0;
}

.lab-wrap pre {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
}

.lab-wrap canvas,
.lab-wrap svg#graphSvg {
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: color-mix(in srgb, var(--surface-soft) 90%, #ffffff 10%);
}

.lab-wrap .attribution h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.lab-wrap .attribution p {
  margin: 0;
  color: var(--muted);
}

.lab-hero--linreg {
  --lab-accent: #4f8cff;
}

.lab-hero--overfitting {
  --lab-accent: #ef9c4b;
}

.lab-hero--backprop {
  --lab-accent: #8f8bff;
}

.lab-hero--knn {
  --lab-accent: #33a6a1;
}

.lab-hero--qlearning {
  --lab-accent: #3bbf77;
}

@media (max-width: 900px) {
  .lab-hero {
    grid-template-columns: 1fr;
  }

  .lab-hero-art {
    justify-items: stretch;
  }

  .lab-hero-art img {
    width: 100%;
    max-width: 340px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .lab-hero {
    animation: lab-fade-up 0.45s ease both;
  }

  .lab-hero-art img {
    animation: lab-float 4.8s ease-in-out infinite;
  }

  @keyframes lab-fade-up {
    from {
      opacity: 0;
      transform: translateY(8px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  @keyframes lab-float {
    0%, 100% {
      transform: translateY(0);
    }

    50% {
      transform: translateY(-4px);
    }
  }
}