/* Undra site, documentation: sidebar, prose, on-this-page, edit link, pager, figures. */
.docs { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0 56px; padding-top: 28px; align-items: start; }
.docs > * { min-width: 0; }
@media (min-width: 900px) { .docs { grid-template-columns: 232px minmax(0, 1fr); padding-top: 44px; } }
@media (min-width: 1240px) { .docs:not(.docs-home) { grid-template-columns: 232px minmax(0, 1fr) 192px; } }
.site-footer { margin-top: 64px; }

/* sidebar: a column on wide screens, a <details> menu on narrow ones (works without JS) */
.sidebar { display: none; }
.mnav { margin-bottom: 26px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface); }
.mnav summary { cursor: pointer; padding: 12px 16px; font-weight: 500; color: var(--text); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.mnav summary::-webkit-details-marker { display: none; }
.mnav summary::after { content: "+"; font-family: var(--font-mono); color: var(--accent); }
.mnav[open] summary::after { content: "–"; }
.mnav nav { padding: 4px 16px 16px; border-top: 1px solid var(--line); }
@media (min-width: 900px) {
  .mnav { display: none; }
  .sidebar { display: block; position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow-y: auto; padding-right: 8px; scrollbar-width: thin; }
}
.side-group { margin-top: 22px; }
.side-group:first-child { margin-top: 0; }
.side-title { font: 500 .7rem/1 var(--font-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); margin: 0 0 8px; padding-left: 12px; }
.side-group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.side-group a { display: block; padding: 6px 12px; border-radius: 8px; color: var(--text-2); text-decoration: none; font-size: .92rem; border-left: 2px solid transparent; }
.side-group a:hover { color: var(--text); background: var(--surface-3); }
.side-group a[aria-current="page"] { color: var(--text); background: var(--accent-soft); border-left-color: var(--accent); font-weight: 500; }

/* on this page */
.toc { display: none; }
@media (min-width: 1240px) { .toc { display: block; position: sticky; top: 80px; font-size: .85rem; } .docs-home .toc { display: none; } }
.toc-title { font: 500 .7rem/1 var(--font-mono); text-transform: uppercase; letter-spacing: .08em; color: var(--text-3); margin: 0 0 10px; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 5px 0 5px 14px; margin-left: -1px; border-left: 1px solid transparent; color: var(--text-3); text-decoration: none; line-height: 1.4; }
.toc a:hover { color: var(--text); }
.toc a[aria-current="true"] { color: var(--accent); border-left-color: var(--accent); }

/* prose */
.prose { max-width: 740px; padding-bottom: 24px; }
.crumb { margin: 0 0 12px; font: 500 .72rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.prose h1 { font-size: clamp(2.25rem, 5vw, 3.25rem); margin-bottom: 18px; }
.prose > .lede { font-size: 1.2rem; margin: 0 0 12px; }
.prose h2 { font-size: clamp(1.5rem, 3vw, 1.85rem); margin: 3rem 0 .6rem; position: relative; }
.prose h3 { margin: 2rem 0 .4rem; position: relative; font-size: 1.15rem; }
.anchor { position: absolute; left: -1.1em; top: 0; color: var(--text-3); text-decoration: none; opacity: 0; font: 400 .7em var(--font-mono); padding-right: .3em; }
h2:hover .anchor, h3:hover .anchor, .anchor:focus { opacity: 1; }
@media (max-width: 899px) { .anchor { display: none; } }
.prose p, .prose li { color: var(--prose); font-size: 1.04rem; line-height: 1.72; }
.prose p { margin: 0 0 1.05rem; }
.prose ul, .prose ol { margin: 0 0 1.2rem; padding-left: 1.3rem; }
.prose li { margin: .3rem 0; }
.prose li::marker { color: var(--text-3); }
.prose strong, .prose em { color: var(--text); font-weight: 500; font-style: normal; }
.prose a { color: var(--text); text-decoration-color: var(--accent-line); text-decoration-thickness: 1.5px; }
.prose a:hover { text-decoration-color: var(--accent); }
.prose .code { font-size: .95em; }
.prose td, .prose th { font-size: .92rem; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

.cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); margin: 30px 0 10px; }
.card { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); text-decoration: none; transition: border-color .15s, background .15s; }
.card:hover { border-color: var(--accent-line); background: var(--surface-2); }
.card span { font: 500 .68rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); }
.card b { color: var(--text); font-weight: 500; }

.edit { margin: 3rem 0 0; font-size: .9rem; }
.edit a { display: inline-flex; align-items: center; gap: 8px; color: var(--text-2); text-decoration: none; }
.edit a:hover { color: var(--accent); }
.edit svg { width: 15px; height: 15px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 1.4rem; padding-top: 1.6rem; border-top: 1px solid var(--line); }
.pager a { display: flex; flex-direction: column; gap: 3px; padding: 14px 18px; border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; background: var(--surface); transition: border-color .15s; }
.pager a:hover { border-color: var(--accent-line); }
.pager span { font: 500 .68rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); }
.pager b { color: var(--text); font-weight: 500; }
.pager .next { text-align: right; grid-column: 2; }
.pager .prev:only-child { grid-column: 1; }

/* diagrams inside docs */
.figure { margin: 1.6rem 0; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow-x: auto; }
.figure figcaption { margin-top: 10px; font-size: .86rem; color: var(--text-3); }
.figure svg { width: 100%; height: auto; min-width: 560px; }
.figure svg text { font-family: var(--font-body); fill: var(--text-2); }
.figure svg .mono { font-family: var(--font-mono); }
.figure svg .t-strong { fill: var(--text); font-weight: 600; }
.figure svg .t-dim { fill: var(--text-3); }
.figure svg .t-acc { fill: var(--accent); }
.figure svg .t-ink { fill: var(--accent-ink); font-weight: 600; }
.figure svg .box { fill: var(--surface-2); stroke: var(--line-strong); stroke-width: 1.2; }
.figure svg .box-acc { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.2; }
.figure svg .box-solid { fill: var(--accent); }
.figure svg .ln { fill: none; stroke: var(--text-3); stroke-width: 1.4; }
.figure svg .ln-acc { fill: none; stroke: var(--accent); stroke-width: 1.6; }
.figure svg .dash { stroke-dasharray: 4 4; }
.figure svg .arrowhead { fill: var(--text-3); }
.figure svg .arrowhead-acc { fill: var(--accent); }
.figure svg .cell { fill: var(--surface-3); stroke: var(--line-strong); }
.figure svg .cell-acc { fill: var(--accent-soft); stroke: var(--accent-line); }

/* API reference pages (build-reference.mjs): a file per section, its declarations collapsed behind a toggle */
.prose .ref-note { margin: 0 0 .2rem; font-size: .9rem; line-height: 1.6; color: var(--text-3); }
.ref-blurb code { white-space: nowrap; overflow-wrap: normal; }
.prose .ref-names { margin: 0; font-size: .95rem; line-height: 2.2; }
.ref-names code { margin-right: 3px; }
.reveal-code.ref { margin-top: 12px; }
.reveal-code.ref > summary span { font: 400 .76rem/1 var(--font-mono); color: var(--text-3); }
.reveal-code.ref .code { margin: 12px 0 0; }
.reveal-code.ref .code pre { font-size: .8rem; line-height: 1.65; }
.reveal-code.ref .code-bar a { color: inherit; text-decoration-color: var(--line-strong); }
.reveal-code.ref .code-bar a:hover { color: var(--text); text-decoration-color: var(--accent); }