/* ──────────────────────────────────────────────────────────
   Vist · site — "Paper and terminal" (shared by every public page)
   Writing lives on e-ink paper; agents live in the terminal.
   One ink, one highlighter. The app's own typefaces, self-hosted.
   No italics, no glows, no gradients.
   ────────────────────────────────────────────────────────── */

@font-face { font-family: "Sentient"; src: url("/fonts/Sentient-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Sentient"; src: url("/fonts/Sentient-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Sentient"; src: url("/fonts/Sentient-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Atkinson Hyperlegible Next"; src: url("/fonts/AtkinsonHyperlegibleNext-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Atkinson Hyperlegible Next"; src: url("/fonts/AtkinsonHyperlegibleNext-600.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Atkinson Hyperlegible Next"; src: url("/fonts/AtkinsonHyperlegibleNext-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/fonts/JetBrainsMono-Regular.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "JetBrains Mono"; src: url("/fonts/JetBrainsMono-Medium.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }

:root {
  /* paper: e-ink grey, not cream */
  --paper:      #e6e7e2;
  --paper-2:    #f3f4f0;
  --paper-dot:  #c3c5be;
  --rule:       #c6c8c1;
  --ink:        #16171a;
  --ink-2:      #3f4248;
  --ink-3:      #575b62;

  /* terminal */
  --term:       #121314;
  --term-2:     #1a1b1d;
  --term-rule:  #2d2f33;
  --term-text:  #dcded8;
  --term-dim:   #9b9e98;

  /* the one accent: a highlighter */
  --mark:       #ffe14a;
  --mark-ink:   #16171a;

  --serif: "Sentient", "Iowan Old Style", Georgia, serif;
  --sans:  "Atkinson Hyperlegible Next", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1240px;
  --section-y: clamp(64px, 8.5vw, 124px);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-variant-numeric: tabular-nums;
}
em, i, cite { font-style: normal; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--mark); color: var(--mark-ink); }
:root { accent-color: var(--ink); caret-color: var(--ink); scrollbar-color: #9fa29b var(--paper); }
.t-term, .install, pre { scrollbar-color: var(--term-rule) transparent; scrollbar-width: thin; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px; }
.t-term :focus-visible { outline-color: var(--mark); }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; margin: 0; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* the highlighter, as used in the editor */
mark, .hl {
  background: var(--mark);
  color: var(--mark-ink);
  padding: 0 .12em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* inline links: ink with a highlighter underline */
.link {
  text-decoration: underline;
  text-decoration-color: var(--mark);
  text-decoration-thickness: .28em;
  text-underline-offset: -.05em;
  text-decoration-skip-ink: none;
  transition: text-decoration-thickness .2s var(--ease-out);
}
.link:hover { text-decoration-thickness: .9em; }
.t-term .link { text-decoration-color: color-mix(in srgb, var(--mark) 55%, transparent); }
.t-term .link:hover { color: var(--mark-ink); text-decoration-color: var(--mark); }

kbd, .kbd {
  font-family: var(--mono);
  font-size: .78em;
  font-weight: 500;
  display: inline-block;
  min-width: 1.7em;
  padding: .08em .45em;
  text-align: center;
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--paper-2);
  color: var(--ink);
  line-height: 1.5;
}
.t-term kbd { background: var(--term-2); border-color: var(--term-rule); color: var(--term-text); }

/* ── buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 48px; padding: 12px 22px;
  font-family: var(--sans); font-size: 16px; font-weight: 700;
  text-decoration: none; white-space: nowrap;
  border-radius: 6px; border: 1.5px solid var(--ink);
  cursor: pointer;
  transition: background .18s var(--ease-out), color .18s var(--ease-out), transform .18s var(--ease-out);
}
.btn-mark { background: var(--mark); color: var(--mark-ink); }
.btn-mark:hover { background: var(--ink); color: var(--mark); }
.btn-mark:active { transform: translateY(1px); }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.btn-sm { min-height: 38px; padding: 8px 14px; font-size: 15px; }
.t-term .btn-mark { border-color: var(--mark); }
.t-term .btn-mark:hover { background: transparent; color: var(--mark); }

/* copyable install line */
.install {
  display: inline-flex; align-items: stretch;
  font-family: var(--mono); font-size: 14px;
  background: var(--term); color: var(--term-text);
  border-radius: 6px; overflow: hidden; max-width: 100%;
}
.install code { padding: 12px 14px; white-space: nowrap; overflow-x: auto; }
.install code::before { content: "$ "; color: var(--mark); }
.install button {
  font: inherit; font-family: var(--sans); font-size: 13px; font-weight: 700;
  background: var(--term-2); color: var(--term-text);
  border: 0; border-left: 1px solid var(--term-rule);
  padding: 0 14px; cursor: pointer; min-width: 72px;
}
.install button:hover { color: var(--mark); }

/* ── nav ───────────────────────────────────────────── */
.nav-outer {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 24px; }
.wordmark { display: inline-flex; color: var(--ink); }
.wordmark svg { height: 44px; width: auto; display: block; margin-left: -10px; }
.nav-links { display: flex; align-items: center; gap: 28px; font-family: var(--sans); font-size: 15px; font-weight: 600; }
.nav-links a { text-decoration: none; color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: 4px; text-underline-offset: 6px; }
.nav-right { display: flex; align-items: center; gap: 20px; font-family: var(--sans); font-size: 15px; font-weight: 600; }
.nav-right .sign-in { text-decoration: none; color: var(--ink-2); }
.nav-right .sign-in:hover { color: var(--ink); }
.nav-menu { display: none; position: relative; font-family: var(--sans); }
.nav-menu summary {
  list-style: none; cursor: pointer; font-weight: 700; font-size: 15px;
  min-height: 44px; display: inline-flex; align-items: center; padding: 0 4px;
}
.nav-menu summary::-webkit-details-marker { display: none; }
.nav-menu[open] summary { text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: 4px; text-underline-offset: 6px; }
.nav-menu-panel {
  position: absolute; right: 0; top: calc(100% + 10px);
  width: min(280px, calc(100vw - 32px));
  background: var(--paper-2); border: 1px solid var(--ink);
  box-shadow: 0 8px 14px -8px rgba(22,23,26,.35);
  padding: 8px; display: grid;
}
.nav-menu-panel a { padding: 12px 12px; text-decoration: none; font-weight: 600; border-radius: 4px; }
.nav-menu-panel a:hover { background: var(--mark); }

.dotgrid {
  background-color: var(--paper);
  background-image: radial-gradient(circle, var(--paper-dot) 1px, transparent 1.3px);
  background-size: 26px 26px;
  background-position: -13px -13px;
}

/* ── footer ────────────────────────────────────────── */
.foot { background: var(--paper-2); border-top: 1px solid var(--rule); padding: 56px 0 32px; font-family: var(--sans); font-size: 15px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 32px; }
.foot-brand p { color: var(--ink-2); margin-top: 14px; max-width: 26em; font-family: var(--serif); font-size: 17px; }
.foot-col h2 { font-family: var(--sans); font-size: 14px; font-weight: 700; margin: 0 0 12px; }
.foot-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.foot-col a { text-decoration: none; color: var(--ink-2); }
.foot-col a:hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: 3px; }
.foot-base { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--ink-3); font-size: 14px; }
.foot-base .socials { display: flex; gap: 18px; }
.foot-base a { text-decoration: none; }
.foot-base a:hover { color: var(--ink); }

/* ── shared page furniture ─────────────────────────── */
.ital, .serif-em, .nonital { font-style: normal; font-family: inherit; }
.label { font-family: var(--sans); font-size: 14px; font-weight: 700; color: var(--ink-3); }
.label:has(+ h2), .label:has(+ h1) { display: none; } /* no kickers above headings */
.btn .arrow { display: none; }
.btn-primary { background: var(--mark); color: var(--mark-ink); }
.btn-primary:hover { background: var(--ink); color: var(--mark); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn[disabled] { opacity: .55; cursor: default; background: transparent; color: var(--ink); }
.nav-links a.current { color: var(--ink); text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: 4px; text-underline-offset: 6px; }

.crumbs { font-family: var(--sans); font-size: 14px; color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.crumbs a { color: var(--ink-2); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: 3px; }

/* page header shared by blog, docs, changelog, pricing */
.page-head { padding: clamp(40px, 6vw, 88px) 0 clamp(32px, 4vw, 56px); border-bottom: 1.5px solid var(--ink); }
.page-head h1 { font-size: clamp(2.4rem, 5.4vw, 4.4rem); line-height: 1; letter-spacing: -0.03em; max-width: 16em; }
.page-head .sub { margin-top: 18px; font-size: 20px; color: var(--ink-2); max-width: 34em; }

/* reading progress: a highlighter stroke */
.read-progress { position: fixed; top: 64px; left: 0; right: 0; height: 4px; z-index: 49; pointer-events: none; }
.read-progress .bar { height: 100%; width: 0; background: var(--mark); border-right: 1.5px solid var(--ink); }

/* prose: blog posts, docs articles, changelog entries, legal pages */
.prose, article.post, .cl-post, .legal-prose { font-size: 19px; line-height: 1.68; color: var(--ink); }
:is(.prose, article.post, .cl-post, .legal-prose) > * + * { margin-top: 1.05em; }
:is(.prose, article.post, .cl-post, .legal-prose) h1 { font-size: 2.2rem; line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 .6em; }
:is(.prose, article.post, .cl-post, .legal-prose) h2 { font-size: clamp(1.6rem, 2.6vw, 2.05rem); line-height: 1.15; letter-spacing: -0.018em; margin-top: 2em; margin-bottom: .55em; scroll-margin-top: 88px; }
:is(.prose, article.post, .cl-post, .legal-prose) h3 { font-size: 1.3rem; line-height: 1.25; margin-top: 1.7em; margin-bottom: .4em; scroll-margin-top: 88px; }
:is(.prose, article.post, .cl-post, .legal-prose) h4 { font-family: var(--sans); font-size: 1rem; font-weight: 700; margin-top: 1.5em; margin-bottom: .3em; }
:is(.prose, article.post, .cl-post, .legal-prose) h2 + *, :is(.prose, article.post, .cl-post, .legal-prose) h3 + * { margin-top: 0; }
:is(.prose, article.post, .cl-post, .legal-prose) a { text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: .22em; text-underline-offset: .08em; text-decoration-skip-ink: none; }
:is(.prose, article.post, .cl-post, .legal-prose) a:hover { background: var(--mark); }
:is(.prose, article.post, .cl-post, .legal-prose) strong { font-weight: 700; }
:is(.prose, article.post, .cl-post, .legal-prose) :is(ul, ol) { padding-left: 1.3em; margin-top: 1em; }
:is(.prose, article.post, .cl-post, .legal-prose) li + li { margin-top: .35em; }
:is(.prose, article.post, .cl-post, .legal-prose) li::marker { color: var(--ink-3); }
:is(.prose, article.post, .cl-post, .legal-prose) blockquote { margin: 1.6em 0; padding: .2em 0 .2em 1.1em; border-left: 1.5px solid var(--ink); font-size: 1.1em; color: var(--ink-2); }
:is(.prose, article.post, .cl-post, .legal-prose) code { font-family: var(--mono); font-size: .8em; background: var(--paper-2); border: 1px solid var(--rule); border-radius: 4px; padding: .08em .35em; }
:is(.prose, article.post, .cl-post, .legal-prose) pre { background: var(--term); color: var(--term-text); border-radius: 6px; padding: 18px 20px; overflow-x: auto; font-size: 14.5px; line-height: 1.65; margin: 1.5em 0; }
:is(.prose, article.post, .cl-post, .legal-prose) pre code { background: none; border: 0; padding: 0; font-size: inherit; color: inherit; }
:is(.prose, article.post, .cl-post, .legal-prose) img { border: 1.5px solid var(--ink); margin: 1.6em 0; }
:is(.prose, article.post, .cl-post, .legal-prose) hr { border: 0; border-top: 1px solid var(--rule); margin: 2.4em 0; }
:is(.prose, article.post, .cl-post, .legal-prose) table { width: 100%; border-collapse: collapse; font-family: var(--sans); font-size: 15.5px; margin: 1.6em 0; border: 1.5px solid var(--ink); background: var(--paper-2); }
:is(.prose, article.post, .cl-post, .legal-prose) th, :is(.prose, article.post, .cl-post, .legal-prose) td { text-align: left; padding: 9px 14px; border-top: 1px solid var(--rule); vertical-align: top; }
:is(.prose, article.post, .cl-post, .legal-prose) th { font-weight: 700; border-top: 0; border-bottom: 1.5px solid var(--ink); }
:is(.prose, article.post, .cl-post, .legal-prose) .callout, :is(.prose, article.post, .cl-post, .legal-prose) aside { background: var(--paper-2); border: 1.5px solid var(--ink); padding: 16px 20px; font-size: .92em; }
:is(.prose, article.post, .cl-post, .legal-prose) .footnotes { font-size: .85em; color: var(--ink-2); border-top: 1px solid var(--rule); padding-top: 1em; margin-top: 3em; }

/* ── article pages (blog posts, docs articles) ───────────────────────────────────────── */
.article-header { padding: clamp(40px, 6vw, 88px) 0 clamp(28px, 4vw, 48px); border-bottom: 1.5px solid var(--ink); }
.header-inner { max-width: 50rem; }
.header-inner .h-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 20px; }
.header-inner .h-meta .label { font-size: 14px; font-weight: 400; }
.header-inner h1 { font-size: clamp(2.3rem, 5vw, 4rem); line-height: 1.02; letter-spacing: -0.028em; }
.header-inner .dek { margin-top: 20px; font-size: 21px; line-height: 1.5; color: var(--ink-2); max-width: 36em; }
.byline-row { margin-top: 32px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-family: var(--sans); font-size: 14px; }
.byline-row .author-block { display: flex; gap: 12px; align-items: center; }
.byline-row .avatar { width: 40px; height: 40px; font-size: 14px; }
.author-block .name { font-weight: 700; font-size: 15px; }
.author-block .role { color: var(--ink-3); }
.byline-row .meta-stats { display: flex; gap: 8px; color: var(--ink-3); }

.article-layout {
  max-width: var(--max); margin: 0 auto; padding: clamp(40px, 5vw, 72px) var(--gutter) var(--section-y);
  display: grid; grid-template-columns: 220px minmax(0, 42rem) 64px; justify-content: space-between; gap: 48px;
}
.article-layout--full { grid-template-columns: minmax(0, 42rem) 64px; justify-content: center; }
.article-layout--full .toc { display: none; }
.toc { position: sticky; top: 104px; align-self: start; font-family: var(--sans); font-size: 14px; }
.toc .toc-label { font-weight: 700; margin-bottom: 12px; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--rule); }
.toc ul ul { border-left: 0; padding-left: 12px; }
.toc a { display: block; padding: 5px 0 5px 14px; margin-left: -1px; border-left: 2px solid transparent; color: var(--ink-3); text-decoration: none; line-height: 1.35; }
.toc a:hover { color: var(--ink); }
.toc a.active { color: var(--ink); border-left-color: var(--ink); background: var(--mark); }
.toc ul ul a { font-size: 13px; }

.share-rail { position: sticky; top: 104px; align-self: start; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.share-rail .share-label { font-family: var(--sans); font-size: 12.5px; font-weight: 700; color: var(--ink-3); margin-bottom: 4px; }
.share-btn {
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--rule); border-radius: 6px; background: transparent; color: var(--ink-2); cursor: pointer;
}
.share-btn:hover { border-color: var(--ink); color: var(--ink); background: var(--mark); }
.share-btn svg { width: 16px; height: 16px; }

article.post > p:first-of-type { font-size: 1.12em; }
.article-foot { margin-top: 3em; padding-top: 20px; border-top: 1px solid var(--rule); }
.article-foot .af-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.article-foot .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.article-foot .mobile-share { display: none; gap: 8px; }
.back-rail { margin-top: 28px; font-family: var(--sans); font-size: 15px; font-weight: 700; }
.back-rail a { text-decoration: underline; text-decoration-color: var(--mark); text-decoration-thickness: 4px; text-underline-offset: 4px; background: none; }
.back-rail a:hover { background: var(--mark); }

.article-category { display: inline-block; font-family: var(--sans); font-size: 14px; font-weight: 700; margin-bottom: 16px; padding: 2px 10px; background: var(--mark); }

/* ── shared responsive ─────────────────────────────── */
@media (max-width: 1020px) {
  .article-layout, .article-layout--full { grid-template-columns: minmax(0, 1fr); }
  .toc, .share-rail { display: none; }
  .article-foot .mobile-share { display: flex; }
  .nav-links { display: none; }
  .nav-menu { display: block; }
  .foot-grid { grid-template-columns: 1fr 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  body { font-size: 18px; }
  .nav-right .sign-in { display: none; }
  .install { display: grid; width: 100%; grid-template-columns: minmax(0, 1fr); }
  .install code { font-size: 13px; padding: 12px; }
  .install button { border-left: 0; border-top: 1px solid var(--term-rule); min-height: 40px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .read-progress { top: 64px; }
  .prose, article.post, .cl-post, .legal-prose { font-size: 18px; }
  :is(.prose, article.post, .cl-post, .legal-prose) table { display: block; overflow-x: auto; }
}