/* Protocols for Business SIG: one typeface (Lora), ink and paper, cobalt for links and actions only.
   Hierarchy comes from size, weight and space. No boxes unless you act on them. */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --fg: #262624;
  --muted: #6b6a66;
  --rule: #e8e6e1;
  --fill: #f6f5f2;
  --link: #004fcc;
  --link-hover: #003a96;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  max-width: 40rem; margin: 0 auto; padding: 2rem 1.25rem 4rem;
  background: var(--bg); color: var(--fg);
  font: 1.0625rem/1.65 Lora, Charter, Georgia, serif;
}
a { color: var(--link); text-underline-offset: .15em; text-decoration-thickness: 1px; }
a:hover { color: var(--link-hover); }
/* two kinds of link: cobalt for things to read or do, quiet for people and asides */
a.quiet, .meta a, .muted a, footer p a { color: inherit; text-decoration-color: color-mix(in srgb, currentColor 30%, transparent); }
a.quiet:hover, .meta a:hover, .muted a:hover, footer p a:hover { color: var(--link); text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 2px; }
::selection { background: #e6efff; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* header and footer */
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; margin-bottom: 3rem; }
header a, footer a { text-decoration: none; }
header .home { display: inline-flex; align-items: center; gap: .5rem; color: var(--fg); font-weight: 600; }
header .logo { width: 20px; height: 20px; border-radius: 3px; }
header .brand-sep, header .brand-sub { color: var(--muted); font-weight: 400; }
header nav { display: flex; gap: 1.25rem; }
header nav a { color: var(--muted); padding: .6rem 0; }
header nav a:hover, header nav a[aria-current] { color: var(--fg); }
header nav a[aria-current] { text-decoration: underline; text-underline-offset: .35em; }
footer { margin-top: 4rem; padding-top: 1rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: .9rem; }
footer p { margin: 0 0 .5rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 0 1.1rem; }
footer nav a { color: var(--muted); padding: .5rem 0; }
footer nav a:hover { color: var(--fg); }
footer .mark { display: none; }

/* type */
h1, h2, h3 { font-weight: 600; line-height: 1.25; text-wrap: balance; }
h1 { font-size: 2rem; margin: 0 0 .75rem; letter-spacing: -.01em; }
h2 { font-size: 1.3rem; margin: 3rem 0 .75rem; }
h3 { font-size: 1.05rem; margin: 1.75rem 0 .35rem; }
p, li { text-wrap: pretty; }
.lede { font-size: 1.15rem; color: var(--fg); }
.meta, .muted { color: var(--muted); }
.small, .meta { font-size: .92rem; }
.kind { color: var(--muted); font-size: .92rem; }
.status { color: var(--muted); font-size: .92rem; font-style: italic; }
blockquote { margin: 1.25rem 0; padding-left: 1rem; border-left: 2px solid var(--rule); color: var(--muted); }
code { font-size: .88em; }
ul, ol { padding-left: 1.25rem; }
li { margin: .3rem 0; }

/* next session: the one box on the site */
.next { background: var(--fill); border-radius: 10px; padding: 1rem 1.25rem 1.1rem; margin: 1.75rem 0 1rem; }
.next p { margin: 0; }
.next .kind::after { content: " · "; }
.next .when { color: var(--muted); font-size: .95rem; }
.next .what { margin-top: .25rem; font-size: 1.1rem; }
.next .what a { font-weight: 600; text-decoration: none; }
.next .what .muted { font-size: .95rem; }
.next .row { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; margin-top: .9rem; }

/* buttons: one filled style for the main action, one plain style for everything else */
.btn, a.btn, .register button[type=submit] {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 1.25rem;
  border: 0; border-radius: 8px; background: var(--link); color: #fff; font: 600 1rem Lora, Georgia, serif;
  text-decoration: none; cursor: pointer;
}
.btn:hover, a.btn:hover { background: var(--link-hover); color: #fff; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-quiet, a.btn-quiet {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0; border: 0; background: none;
  color: var(--link); font: 1rem Lora, Georgia, serif; text-decoration: underline; text-underline-offset: .15em; cursor: pointer;
}

/* rows: label and value, ruled */
.rows { list-style: none; margin: 0; padding: 0; }
.rows li { display: grid; grid-template-columns: 7.5rem 1fr; gap: .15rem 1rem; margin: 0; padding: .75rem 0; border-top: 1px solid var(--rule); }
.rows li:last-child { border-bottom: 1px solid var(--rule); }
.rows .k { color: var(--muted); font-size: .95rem; }
.rows .v p { margin: 0; }
.rows .v p + p { margin-top: .35rem; }
.rows .v .muted { font-size: .92rem; }
a.more-ic { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin: -12px -10px -12px -6px; vertical-align: middle; color: var(--link); }
@media (max-width: 34rem) { .rows li { grid-template-columns: 1fr; } }

/* people and cases: plain lists, no cards */
.people { display: block; }
.people > div { padding: .75rem 0; border-top: 1px solid var(--rule); }
.people > div:last-child { border-bottom: 1px solid var(--rule); }
.people strong { display: block; }
.people p { margin: .2rem 0 0; font-size: .95rem; color: var(--muted); }
.cards { display: block; }
.card { padding: 1rem 0; border-top: 1px solid var(--rule); }
.card:last-child { border-bottom: 1px solid var(--rule); }
.card h3 { margin: 0 0 .25rem; font-size: 1.05rem; }
.card p { margin: 0 0 .35rem; color: var(--muted); }
.card .status { display: block; font-style: normal; }
.card a.more::after { content: " →"; }


/* sessions */
.page-nav { display: flex; flex-wrap: wrap; gap: 0 1.25rem; margin: .5rem 0 0; font-size: .95rem; }
.page-nav a { padding: .6rem 0; }
ol.plan { list-style: none; padding: 0; margin: 1.5rem 0; counter-reset: none; }
ol.plan > li { margin: 0; padding: 1.1rem 0; border-top: 1px solid var(--rule); }
ol.plan > li:last-child { border-bottom: 1px solid var(--rule); }
ol.plan h3 { margin: 0 0 .3rem; font-size: 1.1rem; }
ol.plan h3 .n { color: var(--muted); font-weight: 400; margin-right: .4rem; }
ol.plan p { margin: 0 0 .3rem; }
ol.plan details summary { cursor: pointer; color: var(--link); padding: .35rem 0; width: fit-content; }
ol.plan details ol { margin: .4rem 0 .2rem; padding-left: 1.4rem; font-size: .97rem; }
ol.plan details .muted { font-size: .92rem; }
.steps { padding-left: 1.25rem; }
details.prompt-details summary { cursor: pointer; color: var(--link); padding: .5rem 0; width: fit-content; }
.prompt { background: var(--fill); border-radius: 10px; padding: 1rem 1.1rem; margin: .5rem 0 1rem; }
.prompt pre { white-space: pre-wrap; overflow-wrap: anywhere; font: .92rem/1.55 Lora, Georgia, serif; margin: 0; }
ol.qs li { margin-bottom: .75rem; }
ol.qs .small { display: block; }

/* register dialog (a bottom sheet on phones) */
.register { width: min(28rem, calc(100vw - 2rem)); max-height: calc(100vh - 3rem); overflow-y: auto; padding: 1.25rem 1.5rem 1.5rem;
  border: 0; border-radius: 12px; background: var(--bg); color: var(--fg); box-shadow: 0 20px 50px rgba(0, 0, 0, .18); }
.register::backdrop { background: rgba(0, 0, 0, .3); }
.register:focus, .register:focus-visible { outline: none; }
.register-head { display: flex; justify-content: space-between; align-items: center; }
.register h2 { margin: 0; font-size: 1.2rem; }
.register .close { width: 32px; height: 32px; border: 0; border-radius: 50%; background: var(--fill); color: var(--muted); font-size: 1.1rem; cursor: pointer; }
.register label { display: block; margin: .9rem 0 .3rem; font-size: .95rem; }
.register .req { color: var(--muted); margin-left: .25rem; }
.register input { display: block; width: 100%; min-height: 44px; padding: .55rem .7rem; border: 1px solid var(--rule); border-radius: 8px; background: var(--bg); font: 1rem Lora, Georgia, serif; color: var(--fg); }
.register input:focus { outline: 2px solid var(--link); outline-offset: -1px; }
.register .pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0 .75rem; }
.register .hp { position: absolute; left: -9999px; width: 1px; height: 1px; }
.register .form-status { min-height: 1.2em; margin: .75rem 0 0; font-size: .95rem; color: var(--link); }
.register-actions { display: flex; gap: .75rem; margin-top: .75rem; }
.register-actions .btn, .register-actions button[type=submit] { flex: 1; }
.register .small { margin: .6rem 0 0; }
.register .step[hidden] { display: none; }
.register .done { font-weight: 600; }
@media (max-width: 36rem) {
  .register { width: 100%; max-width: 100%; margin: auto 0 0; inset: auto 0 0 0; border-radius: 14px 14px 0 0; padding-bottom: calc(1.75rem + env(safe-area-inset-bottom, 0px)); }
  .register .pair { grid-template-columns: 1fr; }
  header { margin-bottom: 2rem; }
}

/* blyg */
.blyg-item { margin-top: 1rem; }
.blyg-item h1 { font-size: 1.9rem; }
blockquote.blyg-transclusion { border-left: 2px solid var(--rule); color: var(--fg); }
.schedule { list-style: none; padding: 0; margin: 0; }
.schedule li { display: flex; flex-wrap: wrap; gap: .2rem .75rem; margin: 0; padding: .6rem 0; border-top: 1px solid var(--rule); }
.schedule time { flex: 0 0 9rem; color: var(--muted); font-size: .92rem; }
.schedule .what { flex: 1 1 16rem; }
@media print { header nav, footer nav, .next .row { display: none; } }

/* reading map (2D) */
.map-filters { display: flex; flex-wrap: wrap; gap: .25rem .9rem; margin: 1.25rem 0 .5rem; }
.map-filters button { min-height: 44px; padding: 0; border: 0; background: none; font: .95rem Lora, Georgia, serif; color: var(--muted); cursor: pointer; }
.map-filters button[aria-pressed="true"] { color: var(--fg); text-decoration: underline; text-underline-offset: .35em; }
.map-filters button:hover { color: var(--link); }
.map-wrap { --w: min(58rem, calc(100vw - 2rem)); width: var(--w); margin: .5rem 0 1rem calc((100% - var(--w)) / 2); }
svg.map { display: block; width: 100%; height: auto; }
svg.map .contours path { fill: none; stroke: #d6d2ca; stroke-width: 1.2; }
svg.map .contours .c7, svg.map .contours .c9 { stroke: #d0ccc3; }
svg.map text.area { font: calc(16px / var(--z, 1)) Lora, Georgia, serif; fill: #9a978f; text-anchor: middle; paint-order: stroke; stroke: #fff; stroke-width: 4px; }
svg.map circle.o { fill: #a9a6a0; }
svg.map circle.s { fill: var(--link); stroke: #fff; stroke-width: 1.5; cursor: pointer; }
svg.map circle.on { stroke: var(--fg); stroke-width: 2.5; r: 8; }
svg.map circle:focus-visible { outline: none; stroke: var(--fg); stroke-width: 3; }
svg.map[data-focus]:not([data-focus=""]) circle { opacity: .2; }
svg.map[data-focus="1"] circle.t1, svg.map[data-focus="2"] circle.t2, svg.map[data-focus="3"] circle.t3,
svg.map[data-focus="4"] circle.t4, svg.map[data-focus="5"] circle.t5, svg.map[data-focus="6"] circle.t6 { opacity: 1; r: 9; }
.map-info { min-height: 5rem; padding: .25rem 0 1rem; border-bottom: 1px solid var(--rule); margin-bottom: 1rem; }
.map-info h2 { margin: .5rem 0 .35rem; font-size: 1.15rem; }
.map-info h2 a { text-decoration: none; }
.map-info ol { font-size: .97rem; }
@media (max-width: 40rem) { svg.map text.area { font-size: calc(28px / var(--z, 1)); } }
/* map: progressive detail */
.map-wrap { position: relative; }
.map-zoom { position: absolute; right: .5rem; top: .5rem; display: flex; gap: .25rem; z-index: 2; }
.map-zoom button { min-width: 44px; min-height: 44px; padding: 0 .6rem; border: 1px solid var(--rule); border-radius: 8px; background: rgba(255,255,255,.92); font: 1rem Lora, Georgia, serif; color: var(--fg); cursor: pointer; }
.map-zoom button:hover { color: var(--link); }
svg.map { touch-action: manipulation; }
svg.map.zoomed { cursor: grab; touch-action: none; }
svg.map .tag { cursor: pointer; }
svg.map .tag rect { fill: #fff; stroke: var(--link); stroke-width: 1.5; }
svg.map .tag text { font: 600 16px Lora, Georgia, serif; fill: var(--link); text-anchor: middle; }
svg.map .tag.on rect, svg.map .tag:focus-visible rect { fill: var(--link); }
svg.map .tag.on text, svg.map .tag:focus-visible text { fill: #fff; }
svg.map .tag:focus { outline: none; }
svg.map .spokes line { stroke: var(--link); stroke-opacity: .35; }
svg.map .names text { font-family: Lora, Georgia, serif; fill: var(--fg); paint-order: stroke; stroke: #fff; stroke-width: 3px; stroke-opacity: .9; }
svg.map[data-focus]:not([data-focus=""]) .labels { opacity: .35; }
svg.map[data-focus]:not([data-focus=""]) .tag:not(.on) { opacity: .15; }
svg.map[data-focus]:not([data-focus=""]) .labels { opacity: .2; }
svg.map .names line.leader { stroke: #9a978f; }
.map-tip { position: absolute; z-index: 3; max-width: 18rem; padding: .45rem .65rem; background: #fff; border: 1px solid var(--rule); border-radius: 8px; box-shadow: 0 6px 20px rgba(0,0,0,.08); font-size: .92rem; line-height: 1.35; pointer-events: none; }
.map-tip strong { display: block; font-weight: 600; }
.map-tip span { color: var(--muted); font-size: .88rem; }
@media (max-width: 40rem) { svg.map .tag text { font-size: 24px; } svg.map .tag rect { height: 40px; y: -20; } }
/* map: steady hover (only tags and dots take the pointer; changes fade instead of jumping) */
svg.map .names, svg.map .spokes, svg.map .labels, svg.map .contours { pointer-events: none; }
svg.map circle { transition: opacity .18s ease, r .18s ease; }
svg.map .tag, svg.map .labels { transition: opacity .18s ease; }
@media (prefers-reduced-motion: reduce) { svg.map circle, svg.map .tag, svg.map .labels { transition: none; } }

/* areas: select a name (or click the map) to look closer */
svg.map text.area { pointer-events: auto; cursor: pointer; transition: opacity .18s ease; }
svg.map text.area:hover, svg.map text.area.on { fill: var(--fg); }
svg.map text.area:focus { outline: none; }
svg.map text.area:focus-visible { fill: var(--link); text-decoration: underline; }
svg.map .hull { opacity: .8; }
svg.map .hull circle { fill: #e3ebfa; }
svg.map[data-area]:not([data-area=""]) text.area.on { opacity: 0; }   /* the panel heading names it */
svg.map[data-area]:not([data-area=""]) circle:not(.in) { opacity: .15; }
svg.map[data-area]:not([data-area=""]) circle.o.in { fill: #6b6a66; }
svg.map[data-area]:not([data-area=""]) text.area:not(.on) { opacity: .3; }
svg.map[data-area]:not([data-area=""]) .tag { opacity: .3; }
.map-info ul { font-size: .97rem; }
.map-info .btn-quiet { min-height: 0; font-size: inherit; }