/* Copyright © 2026 JoinIn AI, Inc. All rights reserved. */
/* docs.joinin.ai — derived from the JoinIn brand guideline (public-website static/brand-guideline.html):
   midnight/indigo surfaces, the cyan → magenta gradient, Space Grotesk display, Inter text.
   Content tokens (--accent, --ink, --muted, --note, --warn, --rule, --surface, --sunken) are read by
   the inline SVG diagrams too; keep their names. */

:root {
  --join-cyan: #48D3FD; --join-sky: #5FA7FA; --join-indigo: #7A6EF5; --join-violet: #8D45F0; --join-magenta: #AA0EEB;
  --join-gradient: linear-gradient(90deg, #48D3FD, #5FA7FA 30%, #7A6EF5 55%, #8D45F0 78%, #AA0EEB);

  --bg: #F7FAFF; --surface: #FFFFFF; --sunken: #EEF1FA; --raised: #E2E6F3; --rule: #DDE2F0;
  --ink: #1E2338; --muted: #596182; --accent: #5546E0; --accent-ink: #4537CF; --accent-soft: #ECEAFE;
  --note: #0A78A8; --note-soft: #E3F5FC; --warn: #9A5B00; --warn-soft: #FCF1DE;
  --code-bg: #F2F4FB; --shadow: 0 10px 30px rgb(30 35 80 / .08);
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #050513; --surface: #0E1024; --sunken: #0A0B1D; --raised: #181A34; --rule: #262A4A;
    --ink: #F3F5FF; --muted: #A2A8D0; --accent: #9A91FF; --accent-ink: #B3ACFF; --accent-soft: #1C1B44;
    --note: #6BDBFD; --note-soft: #0E2234; --warn: #F5B85C; --warn-soft: #2A2112;
    --code-bg: #0B0C20; --shadow: 0 16px 40px rgb(0 0 0 / .55);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #050513; --surface: #0E1024; --sunken: #0A0B1D; --raised: #181A34; --rule: #262A4A;
  --ink: #F3F5FF; --muted: #A2A8D0; --accent: #9A91FF; --accent-ink: #B3ACFF; --accent-soft: #1C1B44;
  --note: #6BDBFD; --note-soft: #0E2234; --warn: #F5B85C; --warn-soft: #2A2112;
  --code-bg: #0B0C20; --shadow: 0 16px 40px rgb(0 0 0 / .55);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 130px; }
body { overflow-x: clip; margin: 0; background: var(--bg); color: var(--ink); font: 15.5px/1.68 var(--font-body); }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--join-indigo); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 20; background: var(--surface); padding: 8px 12px; border-radius: 6px; }
.skip:focus { left: 12px; }
code { font: 13px/1.5 var(--font-mono); background: var(--code-bg); border: 1px solid var(--rule); padding: 1px 5px; border-radius: 5px; overflow-wrap: anywhere; }
pre { background: var(--code-bg); border: 1px solid var(--rule); border-radius: 10px; padding: 14px 16px; overflow-x: auto; margin: 10px 0 18px; position: relative; }
pre code { background: none; border: 0; padding: 0; font-size: 12.8px; white-space: pre; overflow-wrap: normal; }
svg { stroke-linecap: round; stroke-linejoin: round; }

/* ── top bar ─────────────────────────────────────────────────────────── */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--rule); }
.top::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--join-gradient); opacity: .7; }
.top-row { display: flex; align-items: center; gap: 10px; padding: 11px 24px; max-width: 1440px; margin: 0 auto; }
/* the joinin.ai wordmark, then "Docs" in the display face behind a hairline */
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); white-space: nowrap; }
.brand img { display: block; height: 24px; width: auto; }
.brand span { font: 500 19px/22px var(--font-display); letter-spacing: -.01em; color: var(--ink); padding-left: 11px; border-left: 1px solid var(--rule); }
.slash { color: var(--rule); font-size: 22px; font-weight: 300; margin: 0 2px; }
.switch { position: relative; }
.switch summary { list-style: none; display: flex; align-items: center; gap: 6px; cursor: pointer; font: 600 15px var(--font-display); padding: 5px 9px; border-radius: 8px; color: var(--ink); white-space: nowrap; }
.switch summary::-webkit-details-marker { display: none; }
.switch summary:hover, .switch[open] summary { background: var(--sunken); }
.switch summary svg { width: 12px; height: 12px; fill: none; stroke: var(--muted); stroke-width: 1.6; }
.switch.version summary { font: 500 12.5px var(--font-mono); color: var(--muted); border: 1px solid var(--rule); padding: 3px 8px; }
.switch .menu { position: absolute; top: calc(100% + 8px); left: 0; min-width: 240px; background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; box-shadow: var(--shadow); padding: 6px; z-index: 12; }
.menu a { display: grid; grid-template-columns: 1fr auto; gap: 0 8px; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--ink); }
.menu a:hover { background: var(--sunken); }
.menu a[aria-current] { background: var(--accent-soft); }
.menu a b { font: 600 14px var(--font-display); }
.menu a em { font: 600 10.5px var(--font-body); font-style: normal; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); align-self: center; }
.menu a span { grid-column: 1 / -1; font-size: 12.5px; color: var(--muted); }
.search { position: relative; flex: 1; max-width: 380px; margin-left: auto; }
.search input { width: 100%; font: 14px var(--font-body); color: var(--ink); background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; padding: 8px 34px 8px 34px; }
.search input::placeholder { color: var(--muted); }
.search-icon { position: absolute; left: 11px; top: 50%; translate: 0 -50%; width: 15px; height: 15px; fill: none; stroke: var(--muted); stroke-width: 1.7; pointer-events: none; }
.search kbd { position: absolute; right: 9px; top: 50%; translate: 0 -50%; font: 500 11px var(--font-mono); color: var(--muted); border: 1px solid var(--rule); border-radius: 5px; padding: 0 5px; pointer-events: none; }
.results { position: absolute; top: calc(100% + 8px); left: 0; right: 0; min-width: 300px; background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; box-shadow: var(--shadow); max-height: 65vh; overflow: auto; padding: 6px; z-index: 12; }
.results a { display: block; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--ink); font-weight: 500; }
.results a:hover, .results a:focus-visible { background: var(--sunken); }
.results a small { display: block; color: var(--muted); font-weight: 400; font-size: 12.5px; }
.icon-btn { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 9px; border: 1px solid var(--rule); background: var(--surface); color: var(--ink); cursor: pointer; flex: none; }
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; }
#theme .moon { display: none; }
:root[data-theme="dark"] #theme .sun { display: none; }
:root[data-theme="dark"] #theme .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) #theme .sun { display: none; }
  :root:not([data-theme="light"]) #theme .moon { display: block; }
}
.menu-btn { display: none; }
.cta { font: 600 13.5px var(--font-body); color: #fff; text-decoration: none; white-space: nowrap; padding: 8px 14px; border-radius: 999px; background: linear-gradient(90deg, var(--join-indigo), var(--join-violet)); }
.cta:hover { color: #fff; filter: brightness(1.08); }
.tabs { display: flex; gap: 24px; padding: 0 24px; max-width: 1440px; margin: 0 auto; }
.tabs a { font: 500 14px var(--font-body); color: var(--muted); text-decoration: none; padding: 6px 0 11px; border-bottom: 2px solid transparent; }
.tabs a:hover { color: var(--ink); }
.tabs a[aria-current] { color: var(--ink); border-image: var(--join-gradient) 1; border-bottom: 2px solid; }

/* ── page shell ──────────────────────────────────────────────────────── */
.shell { display: grid; grid-template-columns: 248px minmax(0, 1fr) 210px; gap: 48px; max-width: 1440px; margin: 0 auto; padding: 32px 24px 80px; }
nav.side { position: sticky; top: 124px; align-self: start; max-height: calc(100vh - 140px); overflow: auto; padding-right: 4px; }
/* each group's links hang off one hairline rail; the current page lights its stretch of it */
nav.side h5 { font: 600 11.5px/1 var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 24px 0 10px; }
nav.side h5:first-child { margin-top: 2px; }
nav.side a { position: relative; display: block; padding: 6px 10px 6px 16px; border-left: 1px solid var(--rule); color: var(--muted); text-decoration: none; font-size: 14.5px; }
nav.side a:hover { color: var(--ink); border-left-color: var(--muted); }
nav.side a[aria-current] { color: var(--ink); font-weight: 600; }
nav.side a[aria-current]::before { content: ""; position: absolute; left: -1px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--join-indigo), var(--join-violet)); }
main { min-width: 0; }
#main:not(.landing) { max-width: 780px; }
.crumb { display: flex; align-items: center; gap: 8px; font: 500 13px var(--font-body); color: var(--muted); }
.crumb .sep { color: var(--rule); }
.pill { font: 600 10.5px var(--font-body); letter-spacing: .06em; text-transform: uppercase; color: var(--accent-ink); background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); padding: 1px 7px; border-radius: 999px; }
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -.015em; text-wrap: balance; }
main h1 { font-size: 38px; line-height: 1.15; font-weight: 700; margin: 8px 0 10px; }
.lede { font-size: 17.5px; line-height: 1.6; color: var(--muted); margin: 0 0 28px; max-width: 64ch; }
.content h2 { font-size: 24px; font-weight: 600; margin: 44px 0 10px; padding-top: 6px; }
.content h3 { font-size: 17px; font-weight: 600; margin: 28px 0 8px; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; }
.content h4 { margin: 0 0 6px; font-size: 15.5px; font-weight: 600; }
.content p, .content li { max-width: 72ch; }
.content strong, .content b { font-weight: 600; }
.msg-title { font: 400 14.5px var(--font-body); color: var(--muted); letter-spacing: 0; }
aside.toc { position: sticky; top: 124px; align-self: start; font-size: 13.5px; max-height: calc(100vh - 140px); overflow: auto; border-left: 1px solid var(--rule); padding-left: 16px; }
aside.toc b { display: block; font: 600 11.5px var(--font-body); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
aside.toc a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; }
aside.toc a:hover, aside.toc a.on { color: var(--ink); }
aside.toc a.on { font-weight: 500; }
aside.toc a.toc-group { color: var(--ink); font-weight: 500; margin-top: 6px; }
aside.toc a.toc-msg { padding-left: 12px; font-family: var(--font-mono); font-size: 12px; overflow-wrap: anywhere; }
aside.toc .toc-layer { margin: 14px 0 2px; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
aside.toc .toc-layer.added { color: var(--accent); }

/* ── content components (shared with the Baton builder's output) ─────── */
.table-scroll { overflow-x: auto; margin: 12px 0 20px; border: 1px solid var(--rule); border-radius: 10px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font: 600 11.5px var(--font-body); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); background: var(--sunken); }
th code { text-transform: none; letter-spacing: 0; font-size: 12px; }
tr:last-child td { border-bottom: 0; }
td p { margin: 0; }
td em { font-style: normal; font-size: 11.5px; color: var(--warn); margin-left: 4px; }
.table-scroll > table th:first-child, .table-scroll > table td:first-child { padding-left: 14px; }
th code, td code { overflow-wrap: normal; white-space: nowrap; }
.callout { border-radius: 10px; padding: 12px 16px 12px 18px; margin: 18px 0; border: 1px solid; position: relative; overflow: hidden; }
.callout::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; }
.callout p { margin: 0; }
.callout.note { background: var(--note-soft); border-color: color-mix(in srgb, var(--note) 30%, transparent); }
.callout.note::before { background: var(--note); }
.callout.tip { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 30%, transparent); }
.callout.tip::before { background: var(--accent); }
.callout.warning { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }
.callout.warning::before { background: var(--warn); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 22px 0; }
.card { position: relative; display: grid; gap: 4px; padding: 16px 18px; border: 1px solid var(--rule); border-radius: 12px; background: var(--surface); text-decoration: none; color: var(--ink); }
.card strong { font: 600 15.5px var(--font-display); }
.card:hover { color: var(--ink); border-color: transparent; background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--join-gradient) border-box; }
.card span { color: var(--muted); font-size: 14px; }
ol.steps { list-style: none; counter-reset: step; padding: 0; margin: 20px 0; }
ol.steps > li { counter-increment: step; position: relative; padding: 0 0 20px 42px; border-left: 1px solid var(--rule); margin-left: 14px; }
ol.steps > li::before { content: counter(step); position: absolute; left: -15px; top: -3px; width: 29px; height: 29px; border-radius: 50%; color: #fff; background: linear-gradient(135deg, var(--join-indigo), var(--join-violet)); display: grid; place-items: center; font: 600 13px var(--font-display); }
ol.steps > li:last-child { border-left-color: transparent; }
.dir { font: 600 10.5px var(--font-body); letter-spacing: .05em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; border: 1px solid; }
.dir.send { color: var(--note); border-color: color-mix(in srgb, var(--note) 40%, transparent); background: var(--note-soft); }
.dir.recv { color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: var(--accent-soft); }
.group-blurb { color: var(--muted); margin-top: -4px; }
.layer-head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; margin: 36px 0 6px; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--rule); background: var(--sunken); }
.layer-head b { font: 600 15px var(--font-display); }
.layer-head span { color: var(--muted); font-size: 14px; }
.layer-head.added { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
details.layer { border-left: 2px solid var(--rule); padding-left: 16px; margin: 0 0 8px; }
details.layer > summary { cursor: pointer; color: var(--accent); font-weight: 500; padding: 6px 0; }
details.layer h2:first-of-type { margin-top: 14px; }
figure.frame { margin: 20px 0 24px; padding: 0; }
figure.frame svg, figure.frame img { display: block; width: 100%; height: auto; border-radius: 12px; }
.code-label { font: 600 12px var(--font-body); color: var(--muted); margin: 14px 0 -4px; }
.update { border-left: 2px solid; border-image: linear-gradient(180deg, var(--join-cyan), var(--join-magenta)) 1; padding-left: 18px; margin: 22px 0; }
.update-head { display: flex; gap: 10px; align-items: baseline; margin-bottom: 6px; }
.update-head b { font-family: var(--font-display); }
.update-head span { color: var(--muted); }
.endpoint { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 10px 12px; background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; }
.endpoint code { background: none; border: 0; font-size: 14px; }
.verb { font: 600 11px var(--font-mono); letter-spacing: .04em; color: #fff; background: linear-gradient(90deg, var(--join-indigo), var(--join-violet)); padding: 3px 8px; border-radius: 6px; }
.open { font-size: 12px; color: var(--muted); }
.message { border-top: 1px solid var(--rule); margin-top: 28px; padding-top: 2px; }
.alt { border-left: 2px solid var(--rule); padding-left: 12px; margin: 8px 0; }
.alt-head, .ex-head { font-size: 13px; color: var(--muted); margin: 8px 0 4px; }
.binary { color: var(--muted); }
.copy { position: absolute; top: 8px; right: 8px; font: 500 12px var(--font-body); color: var(--muted); background: var(--surface); border: 1px solid var(--rule); border-radius: 6px; padding: 3px 9px; cursor: pointer; opacity: 0; }
pre:hover .copy, pre:focus-within .copy, .copy:focus-visible { opacity: 1; }
@media (hover: none) { .copy { opacity: 1; } }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 56px; }
.pager a { display: block; padding: 14px 16px; border: 1px solid var(--rule); border-radius: 12px; text-decoration: none; color: var(--ink); font: 600 15px var(--font-display); background: var(--surface); }
.pager a:hover { border-color: transparent; background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--join-gradient) border-box; }
.pager small { display: block; color: var(--muted); font: 500 12px var(--font-body); margin-bottom: 2px; }
.pager .next { text-align: right; }
.foot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--rule); }
.foot a { color: var(--muted); }

/* ── landing ─────────────────────────────────────────────────────────── */
.landing { max-width: 1080px; margin: 0 auto; padding: 0 24px 72px; }
.landing.narrow { max-width: 760px; }
.hero { position: relative; padding: 72px 0 40px; }
.hero .wave { position: absolute; bottom: -46px; left: calc(50% - 50vw); width: 100vw; height: 104px; z-index: -1; fill: none; stroke: url(#jg); stroke-width: 2; opacity: .55; }
.hero .wave .faint { opacity: .4; stroke-width: 1.2; }
.eyebrow { font: 600 12px var(--font-body); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.hero h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.05; margin: 0 0 16px; }
.grad { background: var(--join-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede { font-size: 18.5px; max-width: 60ch; }
.button { display: inline-block; font: 600 14px var(--font-body); color: #fff; text-decoration: none; padding: 10px 18px; border-radius: 999px; background: linear-gradient(90deg, var(--join-indigo), var(--join-violet)); }
.button:hover { color: #fff; filter: brightness(1.08); }
.products { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.product { display: flex; flex-direction: column; border: 1px solid var(--rule); border-radius: 16px; background: var(--surface); overflow: hidden; }
.product:not(.soon):hover { border-color: transparent; background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--join-gradient) border-box; }
.product-main { display: block; padding: 24px 24px 18px; text-decoration: none; color: var(--ink); flex: 1; }
.product-main:hover { color: var(--ink); }
.product h2 { font-size: 26px; margin: 4px 0 8px; }
.product p { color: var(--muted); margin: 0; }
.product .eyebrow { margin: 0; }
.product-links { display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 12px 24px 18px; border-top: 1px solid var(--rule); font-size: 14px; font-weight: 500; }
.product-links a { text-decoration: none; }
.product.soon { background: var(--sunken); border-style: dashed; }
.landing.narrow .products > a { display: grid; grid-template-columns: 1fr auto; padding: 16px 18px; border: 1px solid var(--rule); border-radius: 12px; background: var(--surface); text-decoration: none; color: var(--ink); }
.landing.narrow .products > a b { font: 600 17px var(--font-display); }
.landing.narrow .products > a em { font: 600 10.5px var(--font-body); font-style: normal; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.landing.narrow .products > a span { grid-column: 1 / -1; color: var(--muted); font-size: 14px; }

/* ── narrow screens ──────────────────────────────────────────────────── */
@media (max-width: 1180px) { .shell { grid-template-columns: 232px minmax(0, 1fr); gap: 40px; } aside.toc { display: none; } }
@media (max-width: 820px) {
  .top-row { flex-wrap: wrap; padding: 10px 16px; gap: 8px; }
  .menu-btn { display: grid; }
  body:not(.landing-page) .brand span { display: none; }
  .hero .wave { bottom: -52px; height: 72px; opacity: .4; }
  .slash { display: none; }
  .cta { display: none; }
  .search { order: 5; flex-basis: 100%; max-width: none; margin: 2px 0 0; }
  .search kbd { display: none; }
  #theme { margin-left: auto; }
  .tabs { padding: 0 16px; }
  .shell { grid-template-columns: minmax(0, 1fr); gap: 0; padding: 18px 16px 64px; }
  nav.side { display: none; position: static; max-height: none; margin-bottom: 18px; border: 1px solid var(--rule); border-radius: 12px; padding: 10px; background: var(--surface); }
  nav.side.open { display: block; }
  main h1 { font-size: 30px; }
  .landing { padding: 0 16px 56px; }
  .hero { padding-top: 44px; }
  .switch .menu { position: fixed; left: 16px; right: 16px; top: 64px; min-width: 0; }
  .pager { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: no-preference) {
  .card, .product, .pager a, nav.side a, .copy, .menu a { transition: background .15s, border-color .15s, color .15s, opacity .12s; }
}