/* Docs, in the services pages' language: a hairline sidebar of the topic's
   docs beside one reading column. Tables and code sit on the surface; wide
   ones scroll inside their own box so the page never scrolls sideways. */

.docs { padding-block: clamp(2.5rem, 6vw, 4.5rem) var(--section-space); }
.docs h1, .docs h2 { hyphens: auto; }

.docs-layout { display: grid; grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr); align-items: start; gap: 2rem clamp(2rem, 5vw, 4.5rem); }

/* Sidebar: the topic's docs in reading order, the current one marked by the accent rule. */
.docs-nav { position: sticky; inset-block-start: 1.5rem; }
.docs-nav h2 { margin: 0 0 .75rem; font-size: 1rem; font-weight: 650; }
.docs-nav h2 a { color: var(--ink); text-decoration: none; }
.docs-nav ol { margin: 0; padding: 0; border-inline-start: 1px solid var(--line); list-style: none; }
.docs-nav li a { display: block; margin-inline-start: -1px; padding: .55rem 0 .55rem 1rem; border-inline-start: 3px solid transparent; color: var(--ink-soft); font-size: .9375rem; line-height: 1.4; text-decoration: none; }
.docs-nav li a:hover { color: var(--ink); }
.docs-nav a[aria-current="page"] { border-inline-start-color: var(--accent); color: var(--ink); font-weight: 650; }
.docs-nav a:focus-visible, .doc-kicker a:focus-visible, .doc-body a:focus-visible, .doc-pager a:focus-visible, .doc-list a:focus-visible { outline: 3px solid var(--focus-outline); outline-offset: 3px; border-radius: .25rem; }

/* Header: the path, title, summary and kind with date. */
.doc-header { max-inline-size: 46rem; margin-block-end: 2.5rem; padding-block-end: 2rem; border-block-end: 1px solid var(--line); }
.doc-kicker { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 1.25rem; color: var(--ink-soft); font-size: .9375rem; font-weight: 600; }
.doc-kicker span { color: var(--line-strong); }
.doc-kicker a { color: var(--accent-strong); text-decoration: none; }
.doc-kicker a:hover { text-decoration: underline; text-underline-offset: .25rem; }
.doc-header h1 { margin: 0 0 1rem; font-size: clamp(2.125rem, 4.2vw, 3.25rem); line-height: 1.06; letter-spacing: -.04em; text-wrap: balance; }
.doc-intro { max-inline-size: 58ch; margin: 0 0 1.25rem; color: var(--ink-reading); font-size: clamp(1.0625rem, 1.8vw, 1.25rem); line-height: 1.55; }
.doc-meta { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; color: var(--ink-soft); font-size: .9375rem; }
/* Legal pages: the effective date and operator lines sit under the title. */
.legal .doc-meta + .doc-meta { margin-block-start: .35rem; }
.doc-kind { color: var(--accent-strong); font-size: .9375rem; font-weight: 650; }

/* Body: one reading column. */
.doc-body { max-inline-size: 46rem; }
.doc-body > * { margin-block: 0; }
.doc-body > * + * { margin-block-start: 1.25rem; }
.doc-body h2 { margin-block-start: 3rem; font-size: clamp(1.5rem, 2.6vw, 1.875rem); line-height: 1.2; letter-spacing: -.03em; scroll-margin-block-start: 1.5rem; }
.doc-body h3 { margin-block-start: 2rem; font-size: 1.25rem; letter-spacing: -.02em; scroll-margin-block-start: 1.5rem; }
.doc-body p, .doc-body li { color: var(--ink-reading); font-size: 1.0625rem; line-height: 1.7; }
.doc-body strong { color: var(--ink); font-weight: 650; }
.doc-body a { color: var(--accent-strong); text-underline-offset: .2rem; }
.doc-body ul, .doc-body ol { padding-inline-start: 1.25rem; }
.doc-body li + li { margin-block-start: .6rem; }
.doc-body li::marker { color: var(--accent); }
.doc-body code { padding: .1rem .35rem; border-radius: .35rem; background: var(--surface); color: var(--ink); font-family: var(--font-mono); font-size: .9em; overflow-wrap: anywhere; }

.doc-code { overflow-x: auto; padding: 1rem 1.25rem; border: 1px solid var(--line); border-radius: var(--radius-panel); background: var(--surface); font-size: .9375rem; line-height: 1.6; }
.doc-code code { padding: 0; background: none; font-size: inherit; overflow-wrap: normal; }

.doc-table { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-panel); }
.doc-table table { inline-size: 100%; border-collapse: collapse; }
.doc-table th, .doc-table td { padding: .75rem 1rem; border-block-start: 1px solid var(--line); font-size: 1rem; line-height: 1.55; text-align: start; vertical-align: top; }
.doc-table thead th { border-block-start: 0; background: var(--surface); color: var(--ink); font-weight: 650; }
.doc-table tbody th { color: var(--ink); font-weight: 650; }
.doc-table td { color: var(--ink-reading); }

/* Diagrams: drawn at a readable size, scrolling inside their box on narrow screens. */
.doc-figure { overflow-x: auto; margin-inline: 0; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius-panel); background-color: var(--canvas); background-image: radial-gradient(var(--line) 1px, transparent 1.5px); background-size: .875rem .875rem; }
.doc-diagram { display: block; inline-size: 100%; min-inline-size: 36rem; block-size: auto; font-family: var(--font-ui); }

/* Screenshots: full column width, or capped in height when taken on a phone. */
.doc-screenshot { overflow: hidden; padding: 0; background: var(--surface); }
.doc-screenshot img { display: block; inline-size: 100%; block-size: auto; }
.doc-screenshot.is-portrait { inline-size: fit-content; max-inline-size: 100%; }
.doc-screenshot.is-portrait img { inline-size: auto; max-inline-size: 100%; max-block-size: min(36rem, 80vh); }

.doc-body blockquote { margin: 1.5rem 0; padding: .9rem 1.1rem; border-inline-start: 3px solid var(--accent-strong); border-radius: 0 var(--radius-control) var(--radius-control) 0; background: var(--surface-accent); }
.doc-body blockquote p { margin: 0; }
.diagram-group { fill: none; stroke: var(--line-strong); stroke-dasharray: 5 4; }
.diagram-group-label { fill: var(--ink-muted); font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.diagram-node { stroke-width: 1.5; }
.diagram-node-plain { fill: var(--surface); stroke: var(--line-strong); }
.diagram-node-accent { fill: var(--surface-accent); stroke: var(--accent); }
.diagram-node-strong { fill: var(--accent); stroke: var(--accent-strong); }
.diagram-text { fill: var(--ink); font-size: 15px; font-weight: 650; text-anchor: middle; dominant-baseline: middle; }
.diagram-node-strong + .diagram-text { fill: var(--canvas); }
.diagram-note { font-weight: 500; }
.diagram-edge { fill: none; stroke: var(--accent); stroke-width: 1.75; }
.diagram-arrowhead { fill: var(--accent); }
.diagram-edge-dashed { stroke-dasharray: 6 4; }
.diagram-lifeline { stroke: var(--line-strong); stroke-width: 1; stroke-dasharray: 3 4; }
.diagram-band { fill: var(--surface-accent); stroke: var(--line); }
.diagram-band-label { fill: var(--ink-muted); font-size: 13px; font-weight: 650; text-anchor: middle; dominant-baseline: middle; }
.diagram-edge-label { fill: var(--ink-soft); font-size: 13px; paint-order: stroke; stroke: var(--canvas); stroke-width: 5px; stroke-linejoin: round; }

/* Previous and next: two cells between hairlines. */
.doc-pager { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; max-inline-size: 46rem; margin-block-start: 3.5rem; padding-block-start: 1.5rem; border-block-start: 1px solid var(--line); }
.doc-pager a { display: grid; gap: .25rem; padding: 1rem 1.25rem; border: 1px solid var(--line); border-radius: var(--radius-panel); text-decoration: none; }
.doc-pager a:hover { background: var(--surface); }
.doc-pager-next { grid-column: 2; text-align: end; }
.doc-pager-label { color: var(--ink-soft); font-size: .875rem; }
.doc-pager-title { color: var(--accent-strong); font-weight: 650; line-height: 1.35; }

/* Topic index: one row per doc, its kind above the title and summary. */
.docs-index .doc-header { padding-block-end: 0; border-block-end: 0; }
.docs-index .doc-header .text-link { margin-block-start: 1rem; }
.doc-list { margin: 0; padding: 0; list-style: none; }
.doc-list a { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); grid-template-rows: auto auto; align-items: baseline; gap: .35rem clamp(1.25rem, 3vw, 2rem); padding-block: 1.5rem; border-block-start: 1px solid var(--line); text-decoration: none; }
.doc-list li:last-child a { border-block-end: 1px solid var(--line); }
.doc-list .doc-kind { grid-column: 1; }
.doc-row-title { grid-column: 1; font-size: clamp(1.25rem, 2.2vw, 1.5rem); font-weight: 650; letter-spacing: -.025em; line-height: 1.3; }
.doc-row-summary { grid-column: 2; grid-row: 1 / span 2; color: var(--ink-reading); line-height: 1.6; }
.doc-list a:hover .doc-row-title { color: var(--accent-strong); text-decoration: underline; text-underline-offset: .3rem; }

@media (max-width: 56rem) {
  .docs-layout { grid-template-columns: minmax(0, 1fr); }
  .docs-nav { position: static; padding-block-end: 1.5rem; border-block-end: 1px solid var(--line); }
}

@media (max-width: 40rem) {
  .doc-list a { grid-template-columns: 1fr; }
  .doc-row-summary { grid-column: 1; grid-row: auto; }
  .doc-pager { grid-template-columns: 1fr; }
  .doc-pager-next { grid-column: 1; }
}