/* Agent Rails developer docs — three-column reference layout:
   sidebar (sections, scroll-spy) · content · "На этой странице" (subsections). */
:root {
  --d-ink: #0b1633; --d-body: #3b4763; --d-muted: #6b7690; --d-line: #e6e9f0; --d-line-2: #f0f2f7;
  --d-bg: #ffffff; --d-soft: #f6f8fc; --d-blue: #1d4ed8; --d-blue-soft: #eef3ff;
  --d-code-bg: #0d1426; --d-code-bar: #151d33; --d-code-ink: #dbe3f4;
  --d-header: 60px; --d-side: 256px; --d-toc: 220px;
  --d-sans: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --d-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--d-header) + 20px); }
body { margin: 0; font-family: var(--d-sans); color: var(--d-body); background: var(--d-bg); font-size: 15.5px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--d-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.dh { position: sticky; top: 0; z-index: 50; height: var(--d-header); display: flex; align-items: center; gap: 14px; padding: 0 20px; background: rgb(255 255 255 / .92); backdrop-filter: saturate(160%) blur(12px); -webkit-backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid var(--d-line); }
.dh__brand img { height: 24px; display: block; }
.dh__tag { font: 700 12px var(--d-sans); color: var(--d-blue); background: var(--d-blue-soft); border-radius: 999px; padding: 3px 10px; }
.dh__links { margin-left: auto; display: flex; align-items: center; gap: 18px; font-size: 14px; font-weight: 600; }
.dh__links a { color: var(--d-body); }
.dh__links a:hover { color: var(--d-blue); text-decoration: none; }
.dh__cta { background: var(--d-blue); color: #fff !important; border-radius: 10px; padding: 8px 14px; }
.dh__menu { display: none; margin-left: auto; border: 1px solid var(--d-line); background: #fff; border-radius: 10px; padding: 7px 12px; font: 600 14px var(--d-sans); color: var(--d-ink); cursor: pointer; }

/* Layout */
.layout { display: grid; grid-template-columns: var(--d-side) minmax(0, 1fr) var(--d-toc); max-width: 1440px; margin: 0 auto; }
.side { position: sticky; top: var(--d-header); height: calc(100vh - var(--d-header)); overflow-y: auto; padding: 24px 12px 40px 20px; border-right: 1px solid var(--d-line-2); }
.side__group { margin-bottom: 20px; }
.side__title { font-size: 11.5px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--d-muted); padding: 0 10px 6px; }
.side a { display: flex; align-items: flex-start; padding: 6px 10px; border-radius: 8px; color: var(--d-body); font-size: 14px; font-weight: 500; line-height: 1.35; border-left: 2px solid transparent; }
.side a:hover { background: var(--d-soft); color: var(--d-ink); text-decoration: none; }
.side a.is-active { background: var(--d-blue-soft); color: var(--d-blue); font-weight: 700; }
.side .m { flex: none; min-width: 38px; font: 700 10px var(--d-mono); padding: 1px 5px; border-radius: 4px; margin: 2px 8px 0 0; }

.content { min-width: 0; padding: 36px 48px 80px; max-width: 880px; }
.toc { position: sticky; top: var(--d-header); height: calc(100vh - var(--d-header)); overflow-y: auto; padding: 28px 16px 40px; }
.toc__title { font-size: 11.5px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--d-muted); margin-bottom: 8px; }
.toc a { display: block; font-size: 13px; color: var(--d-muted); padding: 4px 0 4px 12px; border-left: 2px solid var(--d-line); line-height: 1.4; }
.toc a:hover { color: var(--d-ink); text-decoration: none; }
.toc a.is-active { color: var(--d-blue); border-left-color: var(--d-blue); font-weight: 600; }

/* Typography */
.doc-hero { padding-bottom: 8px; }
.eyebrow { font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--d-blue); }
h1 { font-size: 34px; line-height: 1.15; color: var(--d-ink); margin: 8px 0 12px; letter-spacing: -.02em; }
.lead { font-size: 17px; color: var(--d-body); margin: 0 0 8px; }
.doc-section { padding-top: 40px; margin-top: 40px; border-top: 1px solid var(--d-line-2); }
.doc-section:first-of-type { border-top: 0; margin-top: 8px; }
h2 { font-size: 25px; line-height: 1.25; color: var(--d-ink); margin: 0 0 12px; letter-spacing: -.01em; }
h3 { font-size: 17.5px; color: var(--d-ink); margin: 28px 0 8px; }
h2, h3 { position: relative; }
.anchor { position: absolute; left: -22px; top: 0; opacity: 0; color: var(--d-muted); font-weight: 600; padding-right: 6px; }
h2:hover .anchor, h3:hover .anchor { opacity: 1; }
p { margin: 0 0 14px; }
ul, ol { margin: 0 0 14px; padding-left: 22px; }
li { margin: 4px 0; }
strong { color: var(--d-ink); }
code { font: 13px var(--d-mono); background: var(--d-soft); border: 1px solid var(--d-line-2); border-radius: 6px; padding: 1px 6px; color: var(--d-ink); overflow-wrap: anywhere; }

/* Endpoint line */
.endpoint { display: flex; align-items: center; gap: 10px; border: 1px solid var(--d-line); background: var(--d-soft); border-radius: 10px; padding: 9px 10px 9px 12px; margin: 14px 0 16px; }
.endpoint__path { font: 600 14px var(--d-mono); color: var(--d-ink); overflow-x: auto; white-space: nowrap; flex: 1; min-width: 0; }
.m { display: inline-block; font: 800 11px var(--d-mono); letter-spacing: .02em; padding: 3px 8px; border-radius: 6px; min-width: 44px; text-align: center; }
.m--post { background: #dcfce7; color: #166534; }
.m--get { background: #dbeafe; color: #1e40af; }
.m--del { background: #fee2e2; color: #991b1b; }

/* Tables */
.tbl { overflow-x: auto; margin: 12px 0 20px; border: 1px solid var(--d-line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
th { text-align: left; font-size: 11.5px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; color: var(--d-muted); background: var(--d-soft); padding: 10px 14px; border-bottom: 1px solid var(--d-line); }
td { padding: 11px 14px; border-bottom: 1px solid var(--d-line-2); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) td { background: #fbfcfe; }
td:first-child { white-space: nowrap; }
.type { font: 12.5px var(--d-mono); color: var(--d-muted); }
.req { display: inline-block; font-size: 10.5px; font-weight: 800; letter-spacing: .03em; color: #b45309; background: #fef3c7; border-radius: 5px; padding: 1px 6px; margin-left: 6px; vertical-align: 1px; }

/* Callouts */
.callout { display: flex; gap: 10px; border-radius: 12px; padding: 12px 16px; margin: 16px 0; font-size: 14.5px; border: 1px solid; }
.callout p:last-child { margin: 0; }
.callout__ic { flex: none; font-weight: 800; }
.callout--info { background: #eff6ff; border-color: #dbeafe; }
.callout--tip { background: #f0fdf4; border-color: #dcfce7; }
.callout--warn { background: #fffbeb; border-color: #fde68a; }

/* Code blocks */
.code { margin: 14px 0 20px; border-radius: 12px; overflow: hidden; background: var(--d-code-bg); box-shadow: 0 8px 24px -16px rgb(11 22 51 / .5); }
.code__bar { display: flex; align-items: center; gap: 4px; background: var(--d-code-bar); padding: 6px 8px 6px 12px; border-bottom: 1px solid rgb(255 255 255 / .06); }
.code__label { font: 600 12px var(--d-mono); color: #8a97b8; margin-right: auto; }
.code__tab { font: 600 12.5px var(--d-sans); color: #8a97b8; background: transparent; border: 0; border-radius: 7px; padding: 5px 10px; cursor: pointer; }
.code__tab:hover { color: #fff; }
.code__tab[aria-selected="true"] { color: #fff; background: rgb(255 255 255 / .1); }
.code__tabs { display: flex; gap: 2px; margin-right: auto; }
.code__copy { font: 600 12.5px var(--d-sans); color: #c5cfe6; background: rgb(255 255 255 / .06); border: 1px solid rgb(255 255 255 / .1); border-radius: 7px; padding: 4px 10px; cursor: pointer; }
.code__copy:hover { background: rgb(255 255 255 / .12); color: #fff; }
.code__copy.is-done { color: #86efac; border-color: rgb(134 239 172 / .35); }
.code pre { margin: 0; padding: 16px 18px; overflow-x: auto; font: 13px/1.6 var(--d-mono); color: var(--d-code-ink); tab-size: 2; }
.code pre[hidden] { display: none; }
.tk-str { color: #a5e3a1; }
.tk-key { color: #8fc1ff; }
.tk-num { color: #f7b267; }
.tk-kw { color: #d6a8ff; }
.tk-com { color: #6f7c9c; font-style: italic; }

/* Flow steps */
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0 20px; }
.flow__step { border: 1px solid var(--d-line); border-radius: 12px; padding: 14px; background: #fff; }
.flow__n { width: 24px; height: 24px; border-radius: 50%; background: var(--d-blue-soft); color: var(--d-blue); font: 800 12px var(--d-sans); display: inline-flex; align-items: center; justify-content: center; margin-bottom: 6px; }
.flow__step b { display: block; color: var(--d-ink); font-size: 14.5px; }
.flow__step span { font-size: 13.5px; color: var(--d-muted); }

.side-scrim { display: none; }

.doc-foot { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--d-line); font-size: 13px; color: var(--d-muted); display: flex; flex-wrap: wrap; gap: 8px 18px; }

/* Responsive */
@media (max-width: 1200px) {
  .layout { grid-template-columns: var(--d-side) minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .dh__links { display: none; }
  .dh__menu { display: inline-block; }
  .side { position: fixed; top: var(--d-header); left: 0; bottom: 0; width: min(300px, 86vw); height: auto; background: #fff; z-index: 40; transform: translateX(-100%); transition: transform .22s ease; box-shadow: 0 20px 50px -20px rgb(11 22 51 / .45); }
  body.side-open .side { transform: none; }
  body.side-open .side-scrim { display: block; position: fixed; inset: var(--d-header) 0 0 0; background: rgb(11 22 51 / .25); z-index: 30; }
  .content { padding: 24px 16px 60px; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
  .flow { grid-template-columns: 1fr; }
  table { min-width: 0; font-size: 13.5px; }
  th, td { padding: 9px 10px; }
  td:first-child { white-space: normal; }
  td:first-child code { white-space: nowrap; overflow-wrap: normal; }
  .anchor { display: none; }
}