/* TEC Forum Archive: a reading room, not an app.
   Scale 12 / 15 / 19 / 24 / 30 / 40. Grid 4 8 12 16 24 32 48 64.
   One ink accent (archival green), one alarm (stamp red) reserved for missing material. */

:root {
  --paper: #ffffff;
  --paper-2: oklch(97% 0.006 175);
  --ink: #1b1e21;
  --ink-2: #565d63;            /* 6.6:1 on paper */
  --rule: oklch(88% 0.01 175);
  --accent: oklch(43% 0.08 175); /* links, 7:1 on paper */
  --accent-2: oklch(35% 0.08 175);
  --stamp: oklch(48% 0.16 28);
  --stamp-bg: oklch(96% 0.02 28);
  --serif: "Charter", "Bitstream Charter", "Sitka Text", "Iowan Old Style", Cambria, "Noto Serif", Georgia, serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --s12: 0.75rem; --s15: 0.9375rem; --s19: 1.1875rem; --s24: 1.5rem; --s30: 1.875rem; --s40: 2.5rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131517;
    --paper-2: oklch(22% 0.008 175);
    --ink: #e7e6e3;
    --ink-2: #a3a9ad;
    --rule: oklch(32% 0.01 175);
    --accent: oklch(80% 0.09 175);
    --accent-2: oklch(88% 0.08 175);
    --stamp: oklch(74% 0.14 28);
    --stamp-bg: oklch(26% 0.04 28);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: var(--s19)/1.5 var(--serif);
  font-feature-settings: "kern", "liga", "onum";
}
::selection { background: color-mix(in oklch, var(--accent) 25%, transparent); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--accent-2); text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.mono { font-family: var(--mono); font-size: var(--s15); font-feature-settings: "tnum"; letter-spacing: 0; }
.small, .mono.small { font-size: var(--s12); }
.wrap { max-width: 52rem; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { line-height: 1.2; text-wrap: balance; font-weight: 700; }
h1 { font-size: var(--s40); margin: 48px 0 16px; letter-spacing: -0.01em; }
h2 { font-size: var(--s30); margin: 48px 0 16px; }
h3 { font-size: var(--s24); margin: 32px 0 8px; }
p { text-wrap: pretty; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--paper); padding: 8px 12px; z-index: 2; }

/* masthead */
.masthead { border-bottom: 1px solid var(--rule); }
.masthead-row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 24px; padding-top: 16px; padding-bottom: 12px; }
.wordmark { font-weight: 700; color: var(--ink); text-decoration: none; font-size: var(--s19); }
.masthead nav { display: flex; flex-wrap: wrap; gap: 0 16px; font-family: var(--mono); font-size: var(--s15); }
.masthead nav a { color: var(--ink-2); text-decoration: none; display: inline-block; padding: 12px 0; }
.masthead nav a:hover { color: var(--accent); }

/* home */
.lede h1 { font-size: var(--s40); max-width: 30ch; margin-top: 64px; }
.lede-text { color: var(--ink-2); max-width: 62ch; margin: 0 0 24px; }
.tally { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 32px 0 0; border-top: 2px solid var(--ink); }
.tally div { padding: 12px 16px 12px 0; }
.tally dt { font-size: var(--s12); color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.06em; }
.tally dd { margin: 4px 0 0; font-size: var(--s30); font-weight: 600; font-family: var(--mono); }
.tally dd a { color: var(--stamp); }
@media (max-width: 40rem) { .tally { grid-template-columns: repeat(2, 1fr); } }

.catstrip { display: flex; flex-wrap: wrap; gap: 8px; margin: 48px 0 0; }
.catstrip a {
  font-family: var(--mono); font-size: var(--s12); text-decoration: none; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 2px; padding: 8px 12px; min-height: 44px; display: inline-flex; align-items: center; gap: 8px;
}
.catstrip a:hover { border-color: var(--accent); color: var(--accent); }
.catstrip a span { color: var(--ink-2); }

.year h2 { display: flex; align-items: baseline; gap: 16px; border-bottom: 2px solid var(--ink); padding-bottom: 8px; margin-top: 64px; }
.count { color: var(--ink-2); font-weight: 400; }

/* topic lists */
.tlist { list-style: none; margin: 0; padding: 0; }
.trow { padding: 12px 0; border-bottom: 1px solid var(--rule); display: grid; gap: 4px; }
.trow-title { color: var(--ink); text-decoration: none; font-size: var(--s19); line-height: 1.35; }
.trow-title:hover { color: var(--accent); text-decoration: underline; }
.trow-meta { color: var(--ink-2); font-size: var(--s12); }
.trow-meta a { color: var(--ink-2); }
.trow.is-missing .trow-title { color: var(--ink-2); }
.partial { color: var(--stamp); }
.stamp {
  color: var(--stamp); text-transform: uppercase; letter-spacing: 0.06em;
  border: 1px solid currentColor; padding: 0 4px; border-radius: 2px;
}

/* topic page */
.page-head { margin-bottom: 32px; }
.crumbs { color: var(--ink-2); font-size: var(--s12); margin: 48px 0 0; display: flex; flex-wrap: wrap; gap: 4px 12px; }
.crumbs a { color: var(--ink-2); }
.page-head .crumbs + h1, .topic-head .crumbs + h1 { margin-top: 8px; }
.tag { color: var(--ink-2); }
.topic-facts { color: var(--ink-2); font-size: var(--s12); margin: 0 0 16px; }
.notice {
  background: var(--stamp-bg); color: var(--ink); padding: 12px 16px; border-radius: 2px;
  font-size: var(--s15); margin: 16px 0 0;
}

.post { padding: 32px 0 16px; border-top: 1px solid var(--rule); scroll-margin-top: 16px; }
.post:target { background: linear-gradient(var(--paper-2), var(--paper-2)) no-repeat 0 0 / 100% 100%; box-shadow: -16px 0 0 var(--paper-2), 16px 0 0 var(--paper-2); }
.post-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 16px; color: var(--ink-2); font-size: var(--s12); margin-bottom: 12px; }
.post-n { color: var(--ink-2); text-decoration: none; min-width: 3ch; }
.who { color: var(--ink); font-size: var(--s15); }
.who a { color: var(--ink); text-decoration: none; font-weight: 600; font-family: var(--serif); font-size: var(--s19); }
.who a:hover { color: var(--accent); }
.handle { color: var(--ink-2); font-size: var(--s12); }
.reply { color: var(--ink-2); }
.prov { font-size: var(--s12); color: var(--ink-2); margin: 16px 0 0; }
.prov a { color: var(--ink-2); }

.gap {
  margin: 16px 0; padding: 12px 16px; font-size: var(--s12); color: var(--stamp);
  border: 1px dashed var(--stamp); border-radius: 2px; background: var(--stamp-bg);
}

/* archived post bodies */
.cooked { max-width: 68ch; overflow-wrap: anywhere; }
.cooked > :first-child { margin-top: 0; }
.cooked img { max-width: 100%; height: auto; }
.cooked img[src*="/images/emoji/"] { width: 1.2em; height: 1.2em; vertical-align: -0.2em; }
.cooked h1 { font-size: var(--s30); margin: 32px 0 12px; }
.cooked h2 { font-size: var(--s24); margin: 32px 0 12px; }
.cooked h3, .cooked h4, .cooked h5, .cooked h6 { font-size: var(--s19); margin: 24px 0 8px; }
.cooked a.anchor { display: none; }
.cooked blockquote, .cooked aside.quote {
  margin: 16px 0; padding: 8px 16px; background: var(--paper-2); border-radius: 2px; color: var(--ink);
}
.cooked aside.quote .title { font-family: var(--mono); font-size: var(--s12); color: var(--ink-2); padding: 0 0 4px; }
.cooked aside.quote blockquote { margin: 0; padding: 0; background: none; }
.cooked aside.onebox {
  border: 1px solid var(--rule); border-radius: 2px; padding: 12px 16px; margin: 16px 0; font-size: var(--s15);
}
.cooked aside.onebox img { max-width: 120px; float: right; margin: 0 0 8px 16px; }
.cooked aside.onebox::after { content: ""; display: block; clear: both; }
.cooked aside.onebox header { font-family: var(--mono); font-size: var(--s12); color: var(--ink-2); }
.cooked pre, .cooked code { font-family: var(--mono); font-size: var(--s15); }
.cooked pre { background: var(--paper-2); padding: 12px 16px; overflow-x: auto; border-radius: 2px; }
.cooked :not(pre) > code { background: var(--paper-2); padding: 0 4px; border-radius: 2px; }
.cooked .md-table, .cooked table { display: block; overflow-x: auto; }
.cooked table { border-collapse: collapse; font-size: var(--s15); margin: 16px 0; }
.cooked th, .cooked td { border: 1px solid var(--rule); padding: 4px 8px; text-align: left; vertical-align: top; }
.cooked .lightbox-wrapper .meta { display: none; }
.cooked .poll ul { padding-left: 24px; }
.cooked hr { border: 0; border-top: 1px solid var(--rule); margin: 24px 0; }
.cooked details { border: 1px solid var(--rule); padding: 8px 12px; border-radius: 2px; margin: 16px 0; }

.sources { margin: 48px 0 0; padding: 16px 0; border-top: 2px solid var(--ink); }
.sources summary { cursor: pointer; color: var(--ink-2); min-height: 44px; display: flex; align-items: center; }
.sources ul { padding-left: 16px; overflow-wrap: anywhere; color: var(--ink-2); }

/* indexes */
.clist { list-style: none; padding: 0; margin: 0; }
.clist li { padding: 16px 0; border-bottom: 1px solid var(--rule); }
.clist li > a { font-size: var(--s24); font-weight: 600; color: var(--ink); text-decoration: none; margin-right: 12px; }
.clist li > a:hover { color: var(--accent); }
.clist .parent { color: var(--ink-2); font-weight: 400; }
.clist p { margin: 4px 0 0; color: var(--ink-2); font-size: var(--s15); max-width: 66ch; }
.plist { columns: 2 16rem; column-gap: 32px; padding: 0; list-style: none; font-size: var(--s15); }
.plist li { break-inside: avoid; padding: 4px 0; border-bottom: 1px solid var(--rule); display: flex; gap: 8px; }
.plist .n { margin-left: auto; color: var(--ink-2); }

.prose { max-width: 66ch; }
.prose h2 { font-size: var(--s24); margin-top: 48px; }
.prose li { margin: 8px 0; }

.colophon { margin-top: 64px; padding-top: 24px; padding-bottom: 48px; border-top: 1px solid var(--rule); color: var(--ink-2); font-size: var(--s15); }
.colophon p { max-width: 66ch; }
.colophon a { color: var(--ink-2); }

/* pagefind */
#search { --pagefind-ui-scale: 0.9; --pagefind-ui-primary: var(--accent); --pagefind-ui-text: var(--ink);
  --pagefind-ui-background: var(--paper); --pagefind-ui-border: var(--rule); --pagefind-ui-tag: var(--paper-2);
  --pagefind-ui-font: var(--serif); --pagefind-ui-border-radius: 2px; }

@media (max-width: 40rem) {
  h1, .lede h1 { font-size: var(--s30); margin-top: 32px; }
}

.action { color: var(--ink-2); font-size: var(--s12); padding: 8px 0; border-top: 1px solid var(--rule); }
#search .pagefind-ui__search-input::placeholder { color: var(--ink-2); opacity: 1; }