/* Shared playground shell.
   Use alongside the site stylesheet (../style.css):
       <link rel="stylesheet" href="../../style.css">
       <link rel="stylesheet" href="../style.css">
   Individual playgrounds layer their own page-specific styles on top of this.
*/

.nav-back {
  margin-bottom: 1.5rem;
  display: inline-block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
}
.nav-back:hover {
  color: var(--color-primary);
}

/* A lab-section is a logical chunk of a lab page — heading + prose + figures + takeaway. */
.lab-section {
  margin: 2.5rem 0;
}
.lab-section h2 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}
.lab-section p {
  margin: 0.6rem 0;
}
.lab-section ul,
.lab-section ol {
  margin: 0.6rem 0 0.6rem 1.35rem;
}
.lab-section li {
  margin: 0.25rem 0;
}

/* Takeaway: blue side-bar callout for the punchline of a section. */
.lab-section .takeaway {
  background: rgba(37, 99, 235, 0.06);
  border-left: 3px solid var(--color-primary);
  padding: 0.9rem 1.15rem;
  margin: 1rem 0;
  border-radius: 0 6px 6px 0;
  font-size: 0.95rem;
}
.lab-section .takeaway strong {
  color: var(--color-text);
}

/* Figure card: grey block introducing a chart, an illustrative table, or a code output. */
.lab-section .figure {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1rem;
  margin: 1rem 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.lab-section .figure strong {
  color: var(--color-text);
}

/* Tables inside lab sections — for per-label F1s, summaries, comparison rows. */
.lab-section table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}
.lab-section th,
.lab-section td {
  padding: 0.5rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.lab-section th {
  font-weight: 600;
  background: var(--color-surface);
}
.lab-section td.num,
.lab-section th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.lab-section tfoot td {
  border-top: 2px solid var(--color-border-strong);
  border-bottom: none;
}

.lab-section .note {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Code in lab sections — slightly smaller and lighter than the global default. */
.lab-section code {
  font-size: 0.85em;
}