/*
 * The guide pages: tutorial.html, ci.html, simulate.html, mcp-server.html and
 * every docs/examples/<slug>/index.html. All of them are generated by
 * scripts/gen-docs-lib.ts, and all of them link this file.
 *
 * Two layouts share the top bar and the table of contents:
 *   body.split-page — the tutorial and the examples, each Markdown block beside
 *                     what it renders to;
 *   body.doc-page   — a single rendered column (ci, simulate, mcp-server).
 */

:root {
  --bg: #fdfdfc;
  --fg: #1c1b19;
  --muted: #6b6862;
  --rule: #e0ddd6;
  --src-bg: #f5f3ee;
  --src-fg: #3a372f;
  --accent: #2f6f4f;
  --bar: #ffffff;
  /* The table-of-contents pill and the contents dialog's header. */
  --sage: #dce8dd;
  --sage-strong: #c8dbca;
  --sage-rule: #b4cbb7;
  --sage-fg: #1f4a33;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #e6e4de;
    --muted: #9a968d;
    --rule: #33333a;
    --src-bg: #1e1e24;
    --src-fg: #c9c5ba;
    --accent: #7fc4a0;
    --bar: #1b1b20;
    --sage: #26342b;
    --sage-strong: #2f4135;
    --sage-rule: #3d5444;
    --sage-fg: #cfe6d6;
  }
}

* {
  box-sizing: border-box;
}
html {
  scroll-padding-top: 4.5rem;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font:
    16px/1.6 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
}

/* ---- top bar ---- */
.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  padding: 0.6rem 1rem;
  background: var(--bar);
  border-bottom: 1px solid var(--rule);
}
.bar-side {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.9rem;
}
.bar-side-end {
  justify-content: flex-end;
}
.bar .title {
  font-weight: 600;
  margin-right: 1.25rem;
}
.bar .title a {
  color: inherit;
  text-decoration: none;
}
.nav {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  padding: 2px 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover,
.nav a:focus-visible,
.nav a[aria-current="page"] {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

/* ---- table of contents ---- */
.toc-btn {
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 0.3rem 1rem;
  color: var(--sage-fg);
  background: var(--sage);
  border: 1px solid var(--sage-rule);
  border-radius: 999px;
  cursor: pointer;
}
.toc-btn:hover,
.toc-btn:focus-visible {
  background: var(--sage-strong);
  border-color: var(--accent);
}
.toc-hint {
  margin-left: 0.4rem;
  font:
    0.75em ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  padding: 0.05rem 0.4rem;
  border: 1px solid var(--sage-rule);
  border-radius: 4px;
  color: var(--sage-fg);
  background: var(--bg);
}

.toc {
  width: 66%;
  height: 75%;
  max-width: none;
  max-height: none;
  padding: 0;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
  overflow: hidden;
}
@media (prefers-color-scheme: dark) {
  .toc {
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  }
}
.toc::backdrop {
  background: rgba(0, 0, 0, 0.35);
}
.toc-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.toc-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.25rem;
  color: var(--sage-fg);
  background: var(--sage);
  border-bottom: 1px solid var(--sage-rule);
}
.toc-head strong {
  font-size: 1rem;
}
.toc-search {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-size: 0.9rem;
  padding: 0.35rem 0.8rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--sage-rule);
  border-radius: 999px;
  outline: none;
}
.toc-search:focus-visible {
  border-color: var(--accent);
}
.toc-close {
  margin-left: auto;
  font: inherit;
  font-size: 1.3rem;
  line-height: 1;
  padding: 0.1rem 0.5rem;
  color: var(--sage-fg);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
}
.toc-close:hover,
.toc-close:focus-visible {
  background: var(--sage-strong);
  border-color: var(--sage-rule);
}
.toc-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0;
}
.toc-list a {
  display: block;
  padding: 0.3rem 1.25rem;
  color: var(--fg);
  text-decoration: none;
  border-left: 3px solid transparent;
}
.toc-list a[hidden] {
  display: none;
}
.toc-list a:hover,
.toc-list a:focus-visible {
  background: var(--src-bg);
  border-left-color: var(--accent);
}
.toc-list a[data-level="1"] {
  font-weight: 700;
  font-size: 1.02rem;
  margin-top: 0.7rem;
}
.toc-list a[data-level="2"] {
  padding-left: 2.5rem;
}
.toc-list a[data-level="3"] {
  padding-left: 3.9rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.toc-list a[data-level="4"] {
  padding-left: 5.3rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.toc-list a[data-level="5"],
.toc-list a[data-level="6"] {
  padding-left: 6.7rem;
  font-size: 0.9rem;
  color: var(--muted);
}

@media (max-width: 700px) {
  .toc {
    width: 92%;
    height: 85%;
  }
}

/* ---- split page: the view-mode switch ---- */
.modes button {
  font: inherit;
  font-size: 0.85rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.modes button:first-child {
  border-radius: 4px 0 0 4px;
}
.modes button:last-child {
  border-radius: 0 4px 4px 0;
}
.modes button + button {
  border-left: 0;
}
.modes button[aria-pressed="true"] {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

/* ---- split page: the lockstep grid ---- */
.split-page main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 1.5rem 1rem 6rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: 1.5rem;
  row-gap: 0.2rem;
  align-items: start;
}
.split-page[data-mode="rendered"] main,
.split-page[data-mode="source"] main {
  grid-template-columns: minmax(0, 1fr);
  max-width: 900px;
}
.split-page[data-mode="rendered"] .src,
.split-page[data-mode="source"] .out {
  display: none;
}

.src {
  margin: 0;
  padding: 0.5rem 0.75rem;
  overflow-x: auto;
  background: var(--src-bg);
  color: var(--src-fg);
  border-left: 2px solid var(--rule);
  font:
    12px/1.55 ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  white-space: pre;
  tab-size: 2;
}
.out {
  min-width: 0;
  padding: 0 0.25rem;
}
.out > :first-child {
  margin-top: 0;
}
.out > :last-child {
  margin-bottom: 0;
}

/* ---- split page: rendered markdown ---- */
.out h1,
.out h2,
.out h3 {
  line-height: 1.25;
  margin: 1.6rem 0 0.6rem;
}
.out h1 {
  font-size: 1.7rem;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.3rem;
}
.out h2 {
  font-size: 1.3rem;
}
.out h3 {
  font-size: 1.05rem;
}
.out p,
.out ul,
.out ol {
  margin: 0.6rem 0;
}
.out a {
  color: var(--accent);
}
.out code {
  font:
    0.87em ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  background: var(--src-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
.out pre {
  background: var(--src-bg);
  padding: 0.7rem 0.85rem;
  overflow-x: auto;
  border-radius: 4px;
  border-left: 2px solid var(--accent);
}
.out pre code {
  background: none;
  padding: 0;
  font-size: 0.8rem;
  line-height: 1.5;
}
.out table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
  margin: 0.8rem 0;
}
.out th,
.out td {
  border: 1px solid var(--rule);
  padding: 0.3rem 0.5rem;
  text-align: left;
}
.out th {
  background: var(--src-bg);
}
.out blockquote {
  margin: 0.8rem 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}
.out hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2rem 0;
}

.split-page .note {
  grid-column: 1 / -1;
  padding: 2rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .split-page main {
    grid-template-columns: minmax(0, 1fr);
    max-width: 900px;
  }
  .split-page[data-mode="split"] .src {
    display: none;
  }
}

/* ---- doc page: the document ---- */
.doc-page main {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.5rem 1rem 6rem;
}
.doc-page main h1,
.doc-page main h2,
.doc-page main h3,
.doc-page main h4 {
  line-height: 1.25;
  margin: 1.8rem 0 0.6rem;
}
.doc-page main h1 {
  font-size: 1.7rem;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.3rem;
  margin-top: 2.6rem;
}
.doc-page main h2 {
  font-size: 1.3rem;
}
.doc-page main h3 {
  font-size: 1.05rem;
}
.doc-page main p,
.doc-page main ul,
.doc-page main ol {
  margin: 0.7rem 0;
}
.doc-page main a {
  color: var(--accent);
}
.doc-page main code {
  font:
    0.87em ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  background: var(--src-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
.doc-page main pre {
  background: var(--src-bg);
  padding: 0.7rem 0.85rem;
  overflow-x: auto;
  border-radius: 4px;
  border-left: 2px solid var(--accent);
}
.doc-page main pre code {
  background: none;
  padding: 0;
  font-size: 0.8rem;
  line-height: 1.5;
}
.doc-page main table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9rem;
  margin: 0.9rem 0;
}
.doc-page main th,
.doc-page main td {
  border: 1px solid var(--rule);
  padding: 0.35rem 0.55rem;
  text-align: left;
  vertical-align: top;
}
.doc-page main th {
  background: var(--src-bg);
}
.doc-page main blockquote {
  margin: 0.8rem 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}
.doc-page main hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}
.doc-page main li:has(> input[type="checkbox"]) {
  list-style: none;
  margin-left: -1.2rem;
}

.doc-page .note {
  padding: 2rem 0;
  color: var(--muted);
}
.doc-page .note code {
  color: var(--fg);
}