/* Code Graph — docs page layout. Two-column with sticky TOC. */

.docs-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: clamp(40px, 5vw, 80px);
  padding: 56px 0 80px;
  align-items: start;
}

/* ─── TOC ─────────────────────────────────────────────── */
.docs-toc {
  position: sticky;
  top: 96px;
  align-self: start;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
}

.docs-toc nav { display: grid; gap: 4px; }

.docs-toc a {
  display: block;
  padding: 5px 0 5px 16px;
  font-size: 13.5px;
  color: var(--r-ink-3);
  text-decoration: none;
  border-left: 1px solid var(--r-line);
  transition: color 140ms ease, border-color 140ms ease;
}

.docs-toc a:hover { color: var(--r-ink); }

.docs-toc a.active {
  color: var(--r-ink);
  border-left-color: var(--r-ink);
}

.docs-toc__h {
  font-family: var(--r-mono);
  font-size: 10.5px !important;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--r-ink-2) !important;
  font-weight: 500;
  padding: 18px 0 6px 16px !important;
  border-left-color: transparent !important;
}

.docs-toc__h:first-child { padding-top: 0 !important; }

/* ─── main column ─────────────────────────────────────── */
.docs-main {
  max-width: 760px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--r-ink-2);
}

.docs-main p { margin: 16px 0; max-width: 68ch; }
.docs-main p code,
.docs-main li code,
.docs-main td code {
  font-family: var(--r-mono);
  font-size: 0.88em;
  background: var(--r-chip);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--r-ink);
}

.docs-header { margin-bottom: 56px; }

.docs-header h1 {
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 24px;
  color: var(--r-ink);
}

.docs-header p {
  font-size: 18px;
  max-width: 56ch;
  margin: 0;
}

/* ─── section heads ───────────────────────────────────── */
.docs-sec {
  border-top: 1px solid var(--r-line);
  padding-top: 56px;
  margin-top: 80px;
  scroll-margin-top: 96px;
}

.docs-sec:first-of-type { margin-top: 0; }

.docs-sec h2 {
  font-size: clamp(36px, 4.4vw, 56px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
  color: var(--r-ink);
}

.docs-sub {
  margin-top: 56px;
  scroll-margin-top: 96px;
}

.docs-sub h3 {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: var(--r-ink);
}

.docs-main h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--r-ink);
}

/* ─── code blocks ─────────────────────────────────────── */
.docs-code {
  position: relative;
  margin: 18px 0 22px;
  background: var(--cg-graph-bg);
  border: 1px solid var(--r-line);
  border-radius: 12px;
  overflow: hidden;
}

.docs-code pre {
  margin: 0;
  padding: 18px 56px 18px 20px;
  font-family: var(--r-mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--r-ink);
  overflow-x: auto;
  white-space: pre;
}

.docs-code pre code { background: none; padding: 0; font-size: inherit; color: inherit; }

.docs-copy {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--r-bg);
  border: 1px solid var(--r-line-2);
  border-radius: 999px;
  padding: 5px 12px;
  font-family: var(--r-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--r-ink-2);
  cursor: pointer;
  opacity: 0;
  transition: opacity 140ms ease, color 140ms ease, border-color 140ms ease;
}

.docs-code:hover .docs-copy,
.docs-copy:focus-visible { opacity: 1; }

.docs-copy:hover { color: var(--r-ink); border-color: var(--r-ink); }

.docs-copy[data-state="copied"] {
  opacity: 1;
  color: var(--cg-graph-active);
  border-color: var(--cg-graph-active);
}

/* ─── tables ──────────────────────────────────────────── */
.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}

.docs-table th {
  text-align: left;
  font-family: var(--r-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--r-ink-3);
  font-weight: 500;
  padding: 12px 16px 12px 0;
  border-bottom: 1px solid var(--r-line);
}

.docs-table td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--r-line);
  vertical-align: top;
  color: var(--r-ink-2);
}

.docs-table td:first-child {
  white-space: nowrap;
  color: var(--r-ink);
  font-weight: 500;
}

.docs-table td:last-child,
.docs-table th:last-child { padding-right: 0; }

/* ─── lists ───────────────────────────────────────────── */
.docs-list {
  list-style: none;
  padding: 0;
  margin: 14px 0;
  display: grid;
  gap: 10px;
}

.docs-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--r-ink-2);
}

.docs-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--r-ink-4);
  font-family: var(--r-mono);
}

.docs-list b { color: var(--r-ink); font-weight: 600; }

.docs-aside {
  font-size: 13.5px !important;
  color: var(--r-ink-3) !important;
  border-left: 2px solid var(--r-line);
  padding: 2px 0 2px 14px !important;
  margin: 18px 0 !important;
}

.docs-aside a { color: var(--r-ink); text-decoration: underline; text-underline-offset: 3px; }

/* ─── MCP tool cards ──────────────────────────────────── */
.docs-tool {
  border-top: 1px solid var(--r-line);
  padding-top: 24px;
  margin-top: 28px;
}

.docs-tool header {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.docs-tool header code {
  font-family: var(--r-mono);
  font-size: 15px;
  color: var(--r-ink);
  font-weight: 500;
  background: none;
  padding: 0;
  border-radius: 0;
}

.docs-tool header span {
  font-family: var(--r-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--r-ink-3);
}

.docs-tool p { margin-top: 6px; }

/* ─── agent loop flow ────────────────────────────────── */
.docs-flow {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--r-line);
}

.docs-flow li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--r-line);
  align-items: start;
}

.docs-flow .step {
  font-family: var(--r-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--r-ink-3);
  padding-top: 2px;
}

.docs-flow h4 { margin: 0 0 4px; font-size: 16px; }
.docs-flow p { margin: 0; font-size: 14.5px; line-height: 1.55; }

/* ─── footer ──────────────────────────────────────────── */
.docs-footer {
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid var(--r-line);
  font-size: 14px;
  color: var(--r-ink-3);
}

.docs-footer a { color: var(--r-ink); text-decoration: underline; text-underline-offset: 3px; }

/* ─── responsive ──────────────────────────────────────── */
@media (max-width: 980px) {
  .docs-shell {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 0 56px;
  }
  .docs-toc {
    position: static;
    max-height: none;
    overflow: visible;
    border-bottom: 1px solid var(--r-line);
    padding: 0 0 24px;
  }
  .docs-toc nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 14px;
  }
  .docs-toc a {
    border-left: none;
    padding: 4px 0;
  }
  .docs-toc__h {
    flex-basis: 100%;
    padding: 14px 0 4px !important;
  }
  .docs-toc__h:first-child { padding-top: 0 !important; }
  .docs-toc a.active { border-left: none; text-decoration: underline; text-underline-offset: 3px; }
}

@media (max-width: 640px) {
  .docs-main {
    max-width: 100%;
    min-width: 0;
    font-size: 15px;
  }

  .docs-header { margin-bottom: 40px; }

  .docs-header h1 {
    font-size: 48px;
    line-height: 1;
  }

  .docs-sec {
    padding-top: 44px;
    margin-top: 56px;
  }

  .docs-sub { margin-top: 40px; }

  .docs-code pre {
    padding: 46px 18px 18px;
    font-size: 12.5px;
  }

  .docs-copy {
    opacity: 1;
    top: 10px;
    right: 10px;
  }

  .docs-table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .docs-table th,
  .docs-table td {
    white-space: nowrap;
  }

  .docs-table td:last-child,
  .docs-table th:last-child {
    min-width: 220px;
    white-space: normal;
  }

  .docs-flow li {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 18px 0;
  }
}