/* Zurich Computer Club — relay family page
   No external fonts, scripts or requests. */

:root {
  --bg: #f4f1e8;
  --fg: #1b1b18;
  --dim: #6b6a60;
  --rule: #b9b5a3;
  --accent: #8a1c1c;
  --link: #1d3f72;
  --box: #ebe7d9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15160f;
    --fg: #d8d5c4;
    --dim: #8e8c7c;
    --rule: #3b3c30;
    --accent: #e0a458;
    --link: #8db4e8;
    --box: #1d1e15;
  }
}

* { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "IBM Plex Mono", "DejaVu Sans Mono", "Liberation Mono", "Courier New", monospace;
  line-height: 1.6;
}

.page {
  max-width: 82ch;
  margin: 0 auto;
  padding: 1.5rem 16px 4rem;
}

a { color: var(--link); text-underline-offset: 2px; }
a:hover { color: var(--accent); }

.manhead {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--dim);
  font-size: .85rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: .4rem;
}

.lang a { text-decoration: none; padding: 0 .25rem; }
.lang a[aria-current="true"] { color: var(--fg); font-weight: bold; text-decoration: underline; }

pre.banner {
  font-size: clamp(.5rem, 2.1vw, .95rem);
  line-height: 1.15;
  color: var(--accent);
  margin: 1.5rem 0 .5rem;
  overflow: hidden;
}

.tagline { margin: 0 0 1.5rem; color: var(--dim); }

nav.toc {
  background: var(--box);
  border: 1px solid var(--rule);
  padding: .75rem 1rem;
  margin: 1.5rem 0 2rem;
  font-size: .92rem;
}
nav.toc strong { display: block; margin-bottom: .25rem; }
nav.toc ol { margin: 0; padding-left: 2.2ch; columns: 2; column-gap: 2rem; }
@media (max-width: 560px) { nav.toc ol { columns: 1; } }

h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin: 2.5rem 0 .75rem;
  padding-bottom: .2rem;
  border-bottom: 1px solid var(--rule);
}
h2 .n { color: var(--dim); font-weight: normal; margin-right: 1ch; }

h3 { font-size: 1rem; margin: 1.5rem 0 .4rem; }

p { margin: .6rem 0; }

.indent { margin-left: 4ch; }

dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: .15rem 2ch; margin: .75rem 0; }
dl.kv dt { color: var(--dim); }
dl.kv dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 560px) {
  dl.kv { grid-template-columns: 1fr; }
  dl.kv dd { margin-bottom: .5rem; }
}

/* timeline */
ol.timeline { list-style: none; margin: 1rem 0; padding: 0 0 0 2ch; border-left: 2px solid var(--rule); }
ol.timeline li { position: relative; padding: 0 0 1.4rem 2.5ch; }
ol.timeline li::before {
  content: "";
  position: absolute;
  left: calc(-2ch - 6px);
  top: .55rem;
  width: 10px; height: 10px;
  background: var(--bg);
  border: 2px solid var(--fg);
}
ol.timeline li.final::before { background: var(--accent); border-color: var(--accent); }
ol.timeline time { font-weight: bold; }
ol.timeline .where { color: var(--dim); display: block; font-size: .9rem; }
ol.timeline .count {
  display: inline-block; font-size: .8rem; color: var(--dim);
  border: 1px solid var(--rule); padding: 0 .6ch; margin-left: 1ch;
}
ol.timeline li.final { border-left: 0; }
ol.timeline li.final strong { color: var(--accent); }

.tag {
  display: inline-block; font-size: .72rem; letter-spacing: .05em;
  color: var(--accent); border: 1px solid var(--accent); padding: 0 .6ch;
}

/* tables */
.tablewrap { overflow-x: auto; margin: 1rem 0; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: .3rem 1.2ch; border: 1px solid var(--rule); vertical-align: top; }
th { background: var(--box); font-weight: bold; }

pre, code { font-family: inherit; }
pre.block {
  background: var(--box);
  border: 1px solid var(--rule);
  padding: .75rem 1rem;
  overflow-x: auto;
  font-size: .88rem;
  line-height: 1.45;
}

ul.plain { list-style: none; padding-left: 0; }
ul.plain li { padding-left: 3ch; text-indent: -3ch; margin: .3rem 0; }
ul.plain li::before { content: "-  "; color: var(--dim); white-space: pre; }

.note {
  border-left: 3px solid var(--accent);
  padding: .1rem 0 .1rem 1.5ch;
  margin: 1rem 0;
}

details { margin: .5rem 0; border-bottom: 1px dotted var(--rule); padding-bottom: .5rem; }
summary { cursor: pointer; font-weight: bold; }
summary:hover { color: var(--accent); }

footer {
  margin-top: 3.5rem;
  padding-top: .75rem;
  border-top: 1px solid var(--rule);
  color: var(--dim);
  font-size: .82rem;
}
footer p { margin: .25rem 0; }

::selection { background: var(--accent); color: var(--bg); }

@media print {
  :root { --bg: #fff; --fg: #000; --dim: #444; --rule: #888; --accent: #000; --link: #000; --box: #fff; }
  nav.toc, .lang { display: none; }
}