/* Spec page layout — sidebar TOC + article body. */

.spec-page {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 60px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

@media (max-width: 900px) {
  .spec-page {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 20px 64px;
  }
}

.spec-toc {
  position: sticky;
  top: 88px;
  align-self: start;
  font-size: 0.92rem;
  border-right: 1px solid var(--border);
  padding-right: 24px;
}

@media (max-width: 900px) {
  .spec-toc {
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 0 0 24px;
  }
}

.spec-meta {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.spec-meta .spec-code {
  font-family: "JetBrains Mono", monospace;
  color: var(--accent);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 6px;
}

.spec-meta .spec-version {
  color: var(--text-dim);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.spec-toc h4 {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin: 24px 0 10px;
}

.spec-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.spec-toc li {
  padding: 4px 0;
}

.spec-toc a {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.spec-toc a:hover {
  color: var(--accent);
}

/* ---------- Article body ---------- */

.spec-body {
  max-width: 760px;
  font-size: 1rem;
  line-height: 1.7;
}

.spec-body h1 {
  font-size: 2.2rem;
  margin: 0 0 20px;
}

.spec-body h2 {
  font-size: 1.5rem;
  margin: 56px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.spec-body h3 {
  font-size: 1.2rem;
  margin: 36px 0 12px;
  color: var(--text);
}

.spec-body h4 {
  font-size: 0.95rem;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text);
  margin: 24px 0 10px;
}

.spec-body p {
  color: var(--text-muted);
  margin: 0 0 16px;
}

.spec-body strong {
  color: var(--text);
}

.spec-body ul, .spec-body ol {
  color: var(--text-muted);
  padding-left: 24px;
}

.spec-body li {
  margin: 6px 0;
}

.spec-body li strong {
  color: var(--text);
}

.spec-body code {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-alt);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.spec-body pre {
  margin: 20px 0;
  font-size: 13px;
}

.spec-body pre code {
  background: none;
  color: var(--code-text);
  border: none;
  padding: 0;
  font-size: inherit;
}

.spec-body blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  border-left: 3px solid var(--accent);
  background: var(--bg-alt);
  color: var(--text-muted);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.spec-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.spec-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9rem;
}

.spec-body th, .spec-body td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.spec-body th {
  font-weight: 600;
  color: var(--text);
  background: var(--bg-alt);
}

.spec-body td {
  color: var(--text-muted);
}

.spec-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.spec-body a:hover {
  color: var(--accent-strong);
}