/* =============================================================
   dke.css — DKE Python spec + reference document styles
   Layered on top of langsyn-theme.css + the host site's accent
   (langsyn-<site>.css). All accent colour comes from the instrument
   tokens (--ls-accent / --ls-accent-rgb / --ls-accent-*), so a spec
   page inherits whichever site serves it (net indigo, com vermilion)
   — no hardcoded accent. Structure/layout unchanged from the original.
   ============================================================= */

/* --- Page layout: TOC sidebar + content column -------------- */
.bs-doc {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 3rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

.bs-doc nav#TOC {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  padding-right: 0.75rem;
  border-right: 1px solid var(--ls-border);
  font-size: 12.5px;
  line-height: 1.55;
}

.bs-doc nav#TOC::before {
  content: "Contents";
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ls-text-muted);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--ls-border);
}

.bs-doc nav#TOC ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.bs-doc nav#TOC ul ul {
  padding-left: 0.85rem;
  margin-top: 0.2rem;
  border-left: 1px solid var(--ls-border);
}

.bs-doc nav#TOC li {
  margin: 0.15rem 0;
}

.bs-doc nav#TOC a {
  color: var(--ls-text-muted);
  text-decoration: none;
  display: block;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  transition: color 0.12s, background 0.12s;
}

.bs-doc nav#TOC a:hover {
  color: var(--ls-text);
  background: var(--ls-accent-bg);
}

.bs-doc nav#TOC > ul > li > a {
  color: var(--ls-text);
  font-weight: 500;
  margin-top: 0.35rem;
}

/* --- Content column ----------------------------------------- */
.bs-doc article {
  min-width: 0;
  max-width: 760px;
  color: var(--ls-text);
}

.bs-doc article h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 0.4rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--ls-accent-border);
}

.bs-doc article h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  margin-top: 2.5rem;
  margin-bottom: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--ls-border);
}

.bs-doc article h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--ls-text);
}

.bs-doc article h4 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-top: 1.35rem;
  margin-bottom: 0.4rem;
  color: var(--ls-text-2);
}

.bs-doc article p,
.bs-doc article ul,
.bs-doc article ol {
  margin-bottom: 1rem;
  line-height: 1.72;
}

.bs-doc article ul,
.bs-doc article ol {
  padding-left: 1.5rem;
}

.bs-doc article li {
  margin-bottom: 0.35rem;
}

.bs-doc article strong {
  color: var(--ls-text);
}

.bs-doc article em {
  color: var(--ls-accent);
  font-style: italic;
}

.bs-doc article a {
  color: var(--ls-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(var(--ls-accent-rgb), 0.4);
  transition: border-color 0.12s;
}

.bs-doc article a:hover {
  border-bottom-color: var(--ls-accent);
}

/* --- Inline + block code ------------------------------------ */
.bs-doc article code {
  font-family: var(--ls-font-mono);
  font-size: 0.875em;
  background: var(--ls-surface-2);
  padding: 0.12em 0.4em;
  border-radius: 3px;
  color: var(--ls-accent-glow);
  word-break: break-word;
}

.bs-doc article pre {
  background: var(--ls-surface);
  border: 1px solid var(--ls-border);
  border-left: 3px solid var(--ls-accent);
  border-radius: 4px;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  margin: 1rem 0 1.25rem;
  font-size: 13px;
  line-height: 1.55;
}

.bs-doc article pre code {
  background: transparent;
  padding: 0;
  color: var(--ls-text);
  font-size: inherit;
}

/* --- Tables ------------------------------------------------- */
.bs-doc article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 13.5px;
}

.bs-doc article th,
.bs-doc article td {
  text-align: left;
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--ls-border);
  vertical-align: top;
}

.bs-doc article th {
  font-weight: 600;
  color: var(--ls-text);
  background: rgba(var(--ls-accent-rgb), 0.05);
  border-bottom-color: var(--ls-accent-border);
}

.bs-doc article tbody tr:hover {
  background: var(--ls-surface-2);
}

/* --- Section heading anchors -------------------------------- */
.bs-doc article h1,
.bs-doc article h2,
.bs-doc article h3,
.bs-doc article h4 {
  scroll-margin-top: 1.5rem;
}

/* --- Horizontal rule (spec uses --- as separator) ----------- */
.bs-doc article hr {
  border: 0;
  border-top: 1px solid var(--ls-border);
  margin: 2rem 0;
}

/* --- Spec-meta banner (version + status) at top ------------- */
.bs-doc article .bs-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0 0 1.5rem;
  padding: 0.75rem 1rem;
  background: rgba(var(--ls-accent-rgb), 0.06);
  border: 1px solid var(--ls-accent-border);
  border-radius: 4px;
  font-size: 13px;
  color: var(--ls-text-muted);
}

.bs-doc article .bs-meta strong {
  color: var(--ls-accent);
}

/* --- Mobile breakpoint -------------------------------------- */
@media (max-width: 900px) {
  .bs-doc {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1rem 1.25rem 3rem;
  }

  .bs-doc nav#TOC {
    position: static;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--ls-border);
    padding-right: 0;
    padding-bottom: 1rem;
  }

  .bs-doc article {
    max-width: 100%;
  }

  .bs-doc article pre {
    font-size: 12px;
  }
}

/* (The .bs-edition-bar document-switcher rules were removed 2026-07-20 with
   the edition bar itself — see the Playground/Studio split. Inter-doc nav
   now lives in docNav().) */