:root {
  color-scheme: light dark;
  --bg: #f5f9ff;
  --surface: #ffffff;
  --ink: #143a63;
  --text: #294e73;
  --muted: #5f7892;
  --line: #c9dbf2;
  --soft: #e8f1fc;
  --code-bg: #e8f1fc;
  --code-ink: #143a63;
  --syntax-section: #143a63;
  --syntax-keyword: #245a8c;
  --syntax-type: #365f85;
  --syntax-number: #39778d;
  --syntax-string: #407568;
  --syntax-constant: #294e73;
  --syntax-function: #4c628f;
  --syntax-operator: #5c7893;
  --syntax-comment: #7189a1;
  --scope-background: #ecf4fd;
  --scope-grid: rgb(20 58 99 / 11%);
  --scope-stroke: #143a63;
  --header-bg: rgba(245, 249, 255, .96);
  --scrollbar-track: #e8f1fc;
  --scrollbar-thumb: #9bb8d8;
  --scrollbar-thumb-hover: #6f94ba;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

html[data-theme="dark"] {
  --bg: #0c1e33;
  --surface: #102943;
  --ink: #f5f9ff;
  --text: #dbe9fa;
  --muted: #a8bfd9;
  --line: #2d5278;
  --soft: #143a63;
  --code-bg: #081522;
  --code-ink: #f5f9ff;
  --syntax-section: #a9d2ff;
  --syntax-keyword: #87b9ed;
  --syntax-type: #c9dbf2;
  --syntax-number: #91c4d8;
  --syntax-string: #b3d8cc;
  --syntax-constant: #d5e5f8;
  --syntax-function: #d8c9f2;
  --syntax-operator: #9db7d3;
  --syntax-comment: #7894b2;
  --scope-background: #0a1624;
  --scope-grid: rgb(201 219 242 / 14%);
  --scope-stroke: #c9dbf2;
  --header-bg: rgba(12, 30, 51, .96);
  --scrollbar-track: #081522;
  --scrollbar-thumb: #2d5278;
  --scrollbar-thumb-hover: #47739f;
}

@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    --bg: #0c1e33;
    --surface: #102943;
    --ink: #f5f9ff;
    --text: #dbe9fa;
    --muted: #a8bfd9;
    --line: #2d5278;
    --soft: #143a63;
    --code-bg: #081522;
    --code-ink: #f5f9ff;
    --syntax-section: #a9d2ff;
    --syntax-keyword: #87b9ed;
    --syntax-type: #c9dbf2;
    --syntax-number: #91c4d8;
    --syntax-string: #b3d8cc;
    --syntax-constant: #d5e5f8;
    --syntax-function: #d8c9f2;
    --syntax-operator: #9db7d3;
    --syntax-comment: #7894b2;
    --scope-background: #0a1624;
    --scope-grid: rgb(201 219 242 / 14%);
    --scope-stroke: #c9dbf2;
    --header-bg: rgba(12, 30, 51, .96);
    --scrollbar-track: #081522;
    --scrollbar-thumb: #2d5278;
    --scrollbar-thumb-hover: #47739f;
  }
}

* {
  box-sizing: border-box;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  scrollbar-width: thin;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  scrollbar-width: auto;
}
*::-webkit-scrollbar { width: 10px; height: 10px; }
html::-webkit-scrollbar { width: 12px; height: 12px; }
*::-webkit-scrollbar-track { background: var(--scrollbar-track); }
*::-webkit-scrollbar-thumb {
  border: 2px solid var(--scrollbar-track);
  border-radius: 999px;
  background: var(--scrollbar-thumb);
}
*::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }
*::-webkit-scrollbar-corner { background: var(--scrollbar-track); }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--sans); }
a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: .2em; }
button { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 64px;
  padding: 0 max(1.25rem, calc((100vw - 1360px) / 2));
  display: flex;
  align-items: center;
  gap: 1.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--header-bg);
}
.brand { display: flex; align-items: center; gap: .55rem; color: var(--ink); font-weight: 650; text-decoration: none; }
.brand img { display: block; width: 30px; height: 30px; }
.theme-logo-dark { display: none !important; }
html[data-theme="dark"] .theme-logo-light { display: none !important; }
html[data-theme="dark"] .theme-logo-dark { display: block !important; }
html[data-theme="light"] .theme-logo-light { display: block !important; }
html[data-theme="light"] .theme-logo-dark { display: none !important; }
@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] .theme-logo-light { display: none !important; }
  html[data-theme="auto"] .theme-logo-dark { display: block !important; }
}
.main-nav { display: flex; align-items: center; gap: 1.4rem; margin-left: auto; }
.main-nav a { color: var(--muted); font-size: .875rem; text-decoration: none; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--ink); }
.header-actions { display: flex; gap: .4rem; }
.icon-button { width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 5px; background: transparent; color: var(--ink); cursor: pointer; }
.menu-toggle { display: none; }

.docs-shell {
  width: min(1360px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 190px minmax(0, 760px) 240px;
  gap: clamp(2rem, 4vw, 4rem);
  padding: 1.75rem 1.25rem 6rem;
}
.docs-sidebar, .page-toc { position: sticky; top: 92px; align-self: start; max-height: calc(100vh - 115px); overflow-y: auto; overflow-x: hidden; }
.docs-sidebar nav, .page-toc nav { display: flex; flex-direction: column; }
.sidebar-label { margin: 1.35rem 0 .4rem; color: var(--ink); font: 600 .7rem/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase; }
.sidebar-label:first-child { margin-top: 0; }
.docs-sidebar a, .page-toc a { padding: .24rem 0; color: var(--muted); font-size: .82rem; line-height: 1.4; text-decoration: none; }
.page-toc a { overflow-wrap: anywhere; }
.docs-sidebar a:hover, .page-toc a:hover, .page-toc a.active { color: var(--ink); }
.page-toc a[data-level="3"] { padding-left: .75rem; font-size: .77rem; }
.docs-content { min-width: 0; }
.prose > h1:first-child { margin: 0 0 1rem; color: var(--ink); font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.15; letter-spacing: -.025em; }
.prose h2 { margin: 3.25rem 0 .8rem; padding-top: .6rem; border-top: 1px solid var(--line); color: var(--ink); font-size: 1.55rem; line-height: 1.25; }
.prose h3 { margin: 2rem 0 .6rem; color: var(--ink); font-size: 1.16rem; line-height: 1.35; }
.prose h4 { margin-top: 1.6rem; color: var(--ink); }
.prose p, .prose li { color: var(--text); }
.prose strong { color: var(--ink); }
.prose blockquote { margin: 1.4rem 0; padding: .7rem 1rem; border-left: 3px solid var(--ink); background: var(--soft); }
.prose blockquote p { margin: 0; }
.prose table { width: 100%; margin: 1.4rem 0; border-collapse: collapse; font-size: .9rem; }
.prose th { color: var(--ink); text-align: left; }
.prose th, .prose td { padding: .65rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose :not(pre) > code { padding: .1em .3em; border: 1px solid var(--line); border-radius: 3px; background: var(--soft); color: var(--ink); font: .86em var(--mono); }
.prose pre, .home-example pre { position: relative; margin: 1.4rem 0; padding: 1.2rem 1.35rem; overflow: auto; border-radius: 5px; background: var(--code-bg); }
.prose pre code, .home-example pre code { color: var(--code-ink); font: .84rem/1.6 var(--mono); }
.syntax-section, .syntax-declaration { color: var(--syntax-section); font-weight: 650; }
.syntax-keyword { color: var(--syntax-keyword); }
.syntax-type { color: var(--syntax-type); }
.syntax-number { color: var(--syntax-number); }
.syntax-string { color: var(--syntax-string); }
.syntax-constant { color: var(--syntax-constant); }
.syntax-function { color: var(--syntax-function); }
.syntax-operator { color: var(--syntax-operator); }
.syntax-comment { color: var(--syntax-comment); font-style: italic; }
.copy-button { position: absolute; top: .55rem; right: .55rem; padding: .25rem .45rem; border: 1px solid #2d5278; border-radius: 3px; background: #102943; color: #c9dbf2; font: .68rem var(--mono); cursor: pointer; opacity: 0; }
.prose pre:hover .copy-button, .copy-button:focus { opacity: 1; }

.home-main { width: min(1100px, calc(100% - 2.5rem)); margin: 0 auto; padding: 1.75rem 0 3rem; }
.home-example { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.home-docs { margin-top: 2rem; }
.home-intro { width: 100%; }
.home-title { display: flex; align-items: center; gap: 1.25rem; margin-bottom: .8rem; }
.home-logo { flex: 0 0 auto; width: 76px; height: 76px; }
.home-logo img { display: block; width: 76px; height: 76px; }
.home-intro h1 { margin: 0; color: var(--ink); font-size: clamp(3rem, 9vw, 5rem); line-height: 1; letter-spacing: -.04em; }
.home-lead { margin: 0; color: var(--ink); font-size: 1.3rem; }
.home-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem; margin-top: 1.5rem; font-size: .9rem; font-weight: 600; }
.section-title { display: grid; grid-template-columns: 180px 1fr; align-items: center; gap: 2rem; margin-bottom: 1.25rem; }
.section-title h2 { margin: 0; color: var(--ink); font-size: 1.25rem; }
.section-title p { margin: 0; color: var(--muted); text-align: right; }
.home-example-code { position: relative; }
.home-example-code pre { margin: 0; }
.home-example-code .primary-button {
  position: absolute;
  top: .75rem;
  right: .75rem;
  border-color: #2d5278;
  border-radius: 3px;
  background: #102943;
  color: #c9dbf2;
}
.doc-list { border-top: 1px solid var(--line); }
.doc-list a { display: grid; grid-template-columns: 180px 1fr; gap: 2rem; padding: 1rem 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.doc-list a:hover strong { text-decoration: underline; text-underline-offset: .2em; }
.doc-list strong { color: var(--ink); font-size: .92rem; }
.doc-list span { color: var(--muted); font-size: .9rem; }
.primary-button, .play-page button:not(.icon-button) {
  display: inline-flex;
  align-items: center;
  padding: .58rem .85rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
}
.primary-button, .play-page button.primary-button {
  border-color: color-mix(in srgb, var(--syntax-keyword) 38%, var(--line));
  background: color-mix(in srgb, var(--syntax-keyword) 12%, var(--surface));
  color: var(--syntax-keyword);
  font-weight: 650;
}
.primary-button:hover { background: color-mix(in srgb, var(--syntax-keyword) 19%, var(--surface)); }
.home-example-code .primary-button:hover { background: #143a63; }
.primary-button:disabled, .play-page button:disabled { cursor: default; opacity: .5; }

.play-main { width: min(1360px, calc(100% - 2.5rem)); margin: 0 auto; padding: 1.75rem 0 5rem; }
.play-intro { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: 1.5rem; }
.play-intro h1 { margin: 0; color: var(--ink); font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.08; letter-spacing: -.035em; }
.play-intro p:not(.play-eyebrow) { max-width: 760px; margin: .75rem 0 0; color: var(--muted); }
.play-eyebrow { margin: 0 0 .35rem; color: var(--ink); font: 650 .72rem/1.4 var(--sans); letter-spacing: .09em; text-transform: uppercase; }
.play-workspace { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(390px, .8fr); gap: 1rem; align-items: stretch; }
.play-panel { min-width: 0; padding: 1rem; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); }
.play-panel h2 { margin: 0 0 .75rem; color: var(--ink); font-size: .92rem; }
.play-toolbar { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: .75rem; }
.play-control-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); flex: 1 1 360px; gap: .75rem; }
.play-control-grid label { display: grid; gap: .35rem; color: var(--text); font-size: .78rem; }
.play-page input[type="number"], .play-page input[type="text"], .play-page select { width: 100%; min-width: 0; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); color: var(--ink); font: .82rem var(--mono); }
.play-source-editor { height: min(68vh, 760px); min-height: 420px; overflow: hidden; border: 1px solid var(--line); border-radius: 0 0 5px 5px; background: var(--code-bg); }
.play-source-editor:focus-within, .play-page input:focus, .play-page select:focus { border-color: var(--ink); box-shadow: 0 0 0 2px var(--soft); outline: none; }
.project-files { display: flex; align-items: end; min-width: 0; margin-top: .9rem; border-bottom: 1px solid var(--line); }
.project-file-tabs { display: flex; flex: 1 1 auto; min-width: 0; overflow-x: auto; overflow-y: hidden; align-items: end; gap: 0; scrollbar-width: thin; }
.project-file-add { display: grid !important; place-items: center; align-self: flex-start; flex: 0 0 1.8rem; width: 1.8rem; min-height: 30px; margin-bottom: -1px; padding: 0 !important; border-color: transparent transparent var(--line) !important; border-radius: 4px 4px 0 0 !important; background: transparent !important; color: var(--muted) !important; font: 1rem/1 var(--sans) !important; }
.project-file-add:hover, .project-file-add:focus-visible { background: var(--soft) !important; color: var(--ink) !important; }
.project-file-actions { display: flex; align-self: flex-start; flex: 0 0 auto; align-items: center; gap: .25rem; padding: 0 0 .3rem .5rem; }
.project-file-actions button, .buffer-control button { padding: .3rem .48rem !important; font-size: .66rem; }
.project-file {
  display: flex;
  align-items: center;
  flex: 0 0 9.5rem;
  width: 9.5rem;
  min-width: 9.5rem;
  max-width: 9.5rem;
  min-height: 30px;
  margin-bottom: -1px;
  overflow: hidden;
  border: 1px solid transparent;
  border-bottom-color: var(--line);
  border-radius: 4px 4px 0 0;
  background: transparent;
  color: var(--muted);
  font: .68rem/1.2 var(--mono);
  white-space: nowrap;
  cursor: grab;
}
.project-file[data-dragging="true"] { opacity: .55; cursor: grabbing; }
.project-file-tabs[data-dragging="true"] { cursor: grabbing; }
.project-file-tabs[data-dragging="true"] .project-file { user-select: none; }
.project-file-select {
  display: inline-flex !important;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  align-self: stretch;
  padding: .36rem .18rem .36rem .55rem !important;
  gap: .38rem;
  overflow: hidden;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  color: inherit !important;
  font: inherit !important;
  text-align: left;
  cursor: grab !important;
}
.project-file-tabs[data-dragging="true"] .project-file-select { cursor: grabbing !important; }
.project-file-close {
  display: grid !important;
  place-items: center;
  flex: 0 0 1.35rem;
  align-self: stretch;
  width: 1.35rem;
  padding: 0 .32rem !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  color: var(--muted) !important;
  font: .78rem/1 var(--sans) !important;
}
.project-file-close:hover:not(:disabled), .project-file-close:focus-visible { background: var(--soft) !important; color: var(--ink) !important; }
.project-file-close:disabled { cursor: default; opacity: .28; }
.project-file-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.project-file-main, .project-file-library, .project-file-errors { flex: 0 0 auto; padding: .08rem .28rem; border-radius: 999px; font: 650 .5rem/1.25 var(--sans); letter-spacing: .04em; text-transform: uppercase; }
.project-file-main { background: var(--soft); color: var(--ink); }
.project-file-library { border: 1px solid var(--line); color: var(--muted); }
.project-file-errors { min-width: 1rem; background: #a64856; color: #fff; text-align: center; }
.project-file[data-active="true"] { border-color: var(--line) var(--line) var(--code-bg); background: var(--code-bg); color: var(--ink); }
.project-file[data-kind="library"] .project-file-name { font-style: italic; }
.play-run-panel { display: flex; padding: .45rem; background: var(--code-bg); }
.play-run-view { display: block; flex: 1 1 auto; width: 100%; min-height: 620px; border: 0; border-radius: 5px; background: var(--code-bg); }
.play-intro-meta { display: flex; align-items: center; justify-content: flex-end; flex-wrap: nowrap; gap: .75rem; }
.play-shortcuts { display: flex; align-items: center; flex-wrap: nowrap; gap: .3rem .45rem; margin: 0; color: var(--muted); font-size: .68rem; }
.play-shortcut { display: inline-flex; align-items: center; gap: .3rem; white-space: nowrap; }
.play-shortcut > span { color: var(--text); font-weight: 650; }
.play-shortcuts kbd { display: inline-flex; align-items: center; min-height: 1.45rem; padding: .12rem .34rem; border: 1px solid var(--line); border-radius: 3px; background: var(--soft); color: var(--ink); font: 600 .61rem/1 var(--mono); }
.play-intro-meta .status { justify-content: center; inline-size: 7.25rem; border-radius: 5px; }
.status { display: inline-flex; align-items: center; min-height: 34px; padding: .4rem .65rem; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--text); font-size: .78rem; white-space: nowrap; }
.status.ready { border-color: #407568; color: #407568; }
.status.fail { border-color: #a64856; color: #a64856; }

@media (max-width: 1050px) {
  .docs-shell { grid-template-columns: 170px minmax(0, 1fr); }
  .page-toc { display: none; }
  .play-workspace { grid-template-columns: minmax(0, 1fr) 380px; }
}

@media (max-width: 720px) {
  .site-header { height: 58px; padding: 0 1.25rem; }
  .menu-toggle { display: inline-block; }
  .main-nav { display: none; position: absolute; top: 57px; left: 0; right: 0; padding: .8rem 1rem 1rem; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: .5rem 0; }
  .docs-shell { display: block; padding-top: 1.25rem; }
  .docs-sidebar { display: none; }
  .prose table { display: block; overflow-x: auto; }
  .home-main { padding-top: 1.25rem; }
  .section-title, .doc-list a { grid-template-columns: 1fr; gap: .25rem; }
  .section-title p { text-align: left; }
  .play-main { width: min(100% - 1.5rem, 1360px); padding-top: 1.25rem; }
  .play-intro { display: grid; gap: 1rem; }
  .play-intro .status { justify-self: start; }
  .play-intro-meta { justify-content: flex-start; }
  .play-intro-meta, .play-shortcuts { flex-wrap: wrap; }
  .play-workspace { grid-template-columns: 1fr; }
  .play-control-grid { grid-template-columns: 1fr; }
  .play-source-editor { height: 440px; }
  .play-run-view { min-height: 680px; }
}