/*
   The "How it works" guides (guide/*.html, generated by scripts/nlo-guides-build-v0.mjs). Loads after /site.css + /menu.css.
   Phone first; laptop gets a sticky contents list. Logical properties only. Light by default, dark via prefers-color-scheme. */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E0E10; --bg2: #18181B; --field: #18181B; --ink: #F4F4F5; --paper: #0E0E10;
    --dim: #A1A1AA; --line: #2E2E33; --ok: #4ADE80; --warn: #FBBF24;
  }
  body.guide .top { background: #000; color: #FAFAFA; }
  body.guide .skip { background: #F4F4F5; color: #0E0E10; }
}
body.guide { overflow-x: hidden; }
body.guide details.menu > summary { min-block-size: 44px; }

.guide-layout {
  display: block;
  inline-size: min(100%, 76rem);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}
main.guide-main {
  inline-size: 100%; max-inline-size: 70ch; margin-inline: auto;
  padding-block: 1.5rem 3rem; padding-inline: 0;
}
.guide-index { padding-inline: clamp(1rem, 4vw, 2rem) !important; }
.eyebrow { margin: 0 0 .25rem; font: 500 .75rem/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }
.eyebrow a { color: inherit; text-decoration: none; display: inline-block; min-block-size: 44px; line-height: 44px; }
.guide-main h1 { font-size: clamp(1.9rem, 6vw, 2.6rem); line-height: 1.1; margin-block: 0 1rem; letter-spacing: -0.02em; }
.banner {
  margin-block: 0 1.5rem; padding-block: .75rem; padding-inline: 1rem;
  border: 1px solid var(--line); border-inline-start: 4px solid var(--warn); border-radius: 10px;
  background: var(--bg2); font-size: .95rem;
}
.lede { font-size: 1.1rem; color: var(--dim); }

/* the prose */
.prose { overflow-wrap: anywhere; }
.prose h2 { font-size: 1.35rem; margin-block: 2.25rem .6rem; scroll-margin-block-start: 80px; line-height: 1.3; }
.prose h3 { font-size: 1.1rem; margin-block: 1.5rem .5rem; scroll-margin-block-start: 80px; }
.prose p, .prose li { max-inline-size: 70ch; }
.prose ul, .prose ol { padding-inline-start: 1.4rem; }
.prose li { margin-block-end: .35rem; }
.prose a { color: var(--ink); text-underline-offset: 3px; }
.prose code { font: .9em var(--mono); background: var(--bg2); border: 1px solid var(--line); border-radius: 5px; padding-inline: .3em; overflow-wrap: anywhere; }
.prose blockquote { margin-inline: 0; padding-inline-start: 1rem; border-inline-start: 3px solid var(--ink); font-weight: 500; }
pre.code { overflow-x: auto; max-inline-size: 100%; padding: .9rem 1rem; border-radius: 10px; background: var(--bg2); border: 1px solid var(--line); font: .85rem/1.5 var(--mono); }
pre.code code { background: none; border: 0; padding: 0; overflow-wrap: normal; white-space: pre; }
.table-wrap { overflow-x: auto; max-inline-size: 100%; margin-block: 1rem; border: 1px solid var(--line); border-radius: 10px; }
.table-wrap table { border-collapse: collapse; inline-size: 100%; font-size: .95rem; }
.table-wrap th, .table-wrap td { text-align: start; vertical-align: top; padding-block: .55rem; padding-inline: .8rem; border-block-end: 1px solid var(--line); }
.table-wrap tr:last-child td { border-block-end: 0; }
.table-wrap th { background: var(--bg2); font-weight: 600; }
.risk { border: 1px solid var(--line); border-inline-start: 4px solid var(--warn); border-radius: 10px; padding-block: .25rem; padding-inline: .5rem 1rem; }

.badge {
  display: inline-block; vertical-align: middle; margin-inline-start: .4rem;
  padding-block: .1rem; padding-inline: .5rem; border-radius: 999px;
  font: 600 .7rem/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; white-space: nowrap;
  border: 1px solid currentColor;
}
.badge-preview { color: var(--ok); }
.badge-soon { color: var(--warn); }

/* diagrams */
.diagram { margin-block: 1.5rem; margin-inline: 0; }
.diagram svg { display: block; inline-size: 100%; max-inline-size: 30rem; block-size: auto; color: var(--ink); }
.diagram figcaption { font-size: .85rem; color: var(--dim); margin-block-start: .4rem; }
.d-box { fill: var(--bg2); stroke: currentColor; stroke-width: 1.5; }
.d-strong { fill: var(--ink); }
.d-strong + .d-text { fill: var(--paper); }
.d-dash { stroke-dasharray: 5 4; fill: none; }
.d-text { fill: currentColor; font: 600 13px var(--font); }
.d-line { stroke: currentColor; stroke-width: 1.5; }
.d-head { fill: currentColor; }

/* the agent part: collapsed on the human page */
details.tech { margin-block-start: 2.5rem; border: 1px solid var(--line); border-radius: 12px; }
details.tech > summary {
  cursor: pointer; min-block-size: 44px; display: flex; align-items: center;
  padding-inline: 1rem; font-weight: 600; list-style-position: inside;
}
details.tech[open] > summary { border-block-end: 1px solid var(--line); }
.tech-body { padding-inline: 1rem; padding-block-end: 1rem; }

/* contents: a collapsible box on phone, a sticky column on laptop */
details.toc { margin-block: 1rem 0; border: 1px solid var(--line); border-radius: 12px; background: var(--bg2); }
details.toc > summary { cursor: pointer; min-block-size: 44px; display: flex; align-items: center; padding-inline: 1rem; font-weight: 600; }
details.toc ol { list-style: none; margin: 0; padding-block: 0 .5rem; padding-inline: .5rem; }
details.toc a { display: flex; align-items: center; min-block-size: 44px; padding-inline: .5rem; border-radius: 8px; color: var(--ink); text-decoration: none; }
details.toc a:hover, details.toc a[aria-current="true"] { background: var(--bg); text-decoration: underline; text-underline-offset: 3px; }
.toc-links { display: flex; flex-wrap: wrap; gap: .25rem 1rem; margin: 0; padding-block: .25rem .75rem; padding-inline: .5rem; border-block-start: 1px solid var(--line); font-size: .9rem; }
.toc-links a { color: var(--dim) !important; }

@media (min-width: 1024px) {
  .guide-layout { display: grid; grid-template-columns: 16rem minmax(0, 70ch); gap: 3rem; justify-content: center; }
  details.toc { position: sticky; inset-block-start: 80px; align-self: start; margin-block-start: 2rem; max-block-size: calc(100vh - 100px); overflow-y: auto; background: transparent; border: 0; }
  details.toc > summary { pointer-events: none; list-style: none; padding-inline: .5rem; font: 500 .75rem/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--dim); }
  details.toc > summary::-webkit-details-marker { display: none; }
  main.guide-main { margin-inline: 0; }
  .guide-index { margin-inline: auto !important; }
}

/* pager + index cards */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-block-start: 3rem; }
.pager a { display: flex; flex-direction: column; justify-content: center; min-block-size: 64px; padding-block: .6rem; padding-inline: 1rem; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); text-decoration: none; }
.pager a:hover { border-color: var(--ink); }
.pager small { color: var(--dim); font-size: .8rem; }
.pager-next { text-align: end; }
.cards { list-style: none; margin: 1.5rem 0; padding: 0; display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.card { display: flex; flex-direction: column; gap: .35rem; min-block-size: 44px; block-size: 100%; padding: 1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--bg2); color: var(--ink); text-decoration: none; }
.card:hover { border-color: var(--ink); }
.card-title { font-weight: 600; font-size: 1.1rem; }
.card-blurb { color: var(--dim); font-size: .95rem; flex: 1; }
.card .badge { align-self: flex-start; margin-inline-start: 0; }
.agent-note { color: var(--dim); }
.agent-note a { color: var(--ink); display: inline-block; min-block-size: 44px; line-height: 44px; }
.foot a { display: inline-block; min-block-size: 44px; line-height: 44px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }