/* Hill Mole. Keeps the 2005 look (grey page, a 700px white column under
   the 700px star-nosed mole, lowercase headings, grey links) with black
   sans-serif text on white by default; readers can switch to dark with
   the button in the banner. The column matches the banner so the GIF
   fills it at native size; on phones both scale down together. */

:root {
  --page: #cccccc;
  --paper: #ffffff;
  --ink: #000000;
  --muted: #6b6b6b;
  --link: #6f6f6f;
  --link-hover-bg: #999999;
  --link-hover-ink: #ffffff;
  --rule: #e2e2e2;
  --quote: #f4f4f4;
  --field: #ffffff;
  --sans: "Helvetica Neue", Helvetica, Arial, "Liberation Sans", sans-serif;
  --heading: "Trebuchet MS", var(--sans);
  color-scheme: light;
}

/* Reader-chosen dark theme (set by the banner button, remembered per device). */
:root[data-theme="dark"] {
  --page: #141414;
  --paper: #1c1c1c;
  --ink: #e8e8e8;
  --muted: #9a9a9a;
  --link: #b3b3b3;
  --link-hover-bg: #5a5a5a;
  --link-hover-ink: #ffffff;
  --rule: #333333;
  --quote: #262626;
  --field: #2a2a2a;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
}

a { color: var(--link); text-decoration: none; }
a:hover, a:focus-visible { background: var(--link-hover-bg); color: var(--link-hover-ink); }
.entry-body a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }

#container {
  max-width: 700px;
  margin: 0 auto;
  background: var(--paper);
}

#banner { position: relative; background: #c0c0c0; line-height: 0; }
#banner a, #banner a:hover { background: none; display: block; }
#banner img { display: block; width: 100%; height: auto; }

.theme-toggle {
  position: absolute;
  top: 8px;
  right: 8px;
  font: .75rem/1 var(--heading);
  text-transform: lowercase;
  color: #ffffff;
  background: rgba(0, 0, 0, .55);
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 999px;
  padding: .45em .8em;
  cursor: pointer;
}
.theme-toggle:hover, .theme-toggle:focus-visible { background: rgba(0, 0, 0, .8); }
.theme-toggle[hidden] { display: none; }

.columns { padding: 0 16px; }

.site-nav {
  font-family: var(--heading);
  font-size: .85rem;
  text-transform: lowercase;
  text-align: center;
  color: var(--muted);
  padding: .6rem 16px;
  border-bottom: 1px solid var(--rule);
}
.site-nav a { white-space: nowrap; }
.site-nav a[aria-current="page"] { color: var(--ink); }
.site-footer .site-nav { border: 0; padding: 0 0 .6rem; }

.content { min-width: 0; padding: 1rem 0 2rem; }

h1, h2, h3 {
  font-family: var(--heading);
  font-weight: normal;
  text-transform: lowercase;
  line-height: 1.25;
}
.entry h1, .entry h2, .entry h3 { font-size: 1.5rem; margin: 0 0 .15rem; }
.entry h1 a, .entry h2 a, .entry h3 a { color: var(--ink); }
.entry h1 a:hover, .entry h2 a:hover, .entry h3 a:hover { color: var(--link-hover-ink); }
.archive-title { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.5rem; }

.entry { margin-bottom: 2.5rem; }
.entry-body p { margin: 0 0 1.1em; }
.entry-body blockquote {
  margin: 0 0 1.1em;
  padding: .6em 1em;
  background: var(--quote);
  border-left: 3px solid var(--rule);
}
.entry-body img, .entry-body iframe { max-width: 100%; height: auto; }
.entry-body iframe.video { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; margin: 0 0 1.1em; }

.date, .posted { font-family: var(--heading); font-size: .8rem; color: var(--muted); margin: 0 0 1rem; }

.entry-nav {
  font-family: var(--heading);
  font-size: .9rem;
  text-align: center;
  margin: 1rem 0 1.75rem;
  color: var(--muted);
}

.sidebar {
  font-family: var(--heading);
  font-size: .9rem;
  line-height: 1.5;
  color: var(--muted);
  border-top: 1px solid var(--rule);
  padding: 1.25rem 0 1rem;
}
.sidebar p { margin: 0 0 1rem; }
.sidebar .feeds a { margin-right: .5em; }
.sidebar .badge img { display: block; }
.search input {
  width: 100%;
  font: inherit;
  padding: .4em .6em;
  margin-bottom: 1rem;
  color: var(--ink);
  background: var(--field);
  border: 1px solid var(--rule);
  border-radius: 3px;
}

.latest { font-family: var(--heading); font-size: .85rem; color: var(--muted); margin: 0 0 1.25rem; }
.intro { font-family: var(--heading); font-size: .9rem; color: var(--muted); margin: 0 0 1.5rem; }
.faq dt { font-weight: bold; margin-top: 1.1em; }
.faq dd { margin: .2em 0 0; }
.site-footer p + p { margin-top: .25rem; }

.entry-body h2, .faq-title { font-size: 1.2rem; margin: 1.6em 0 .4em; }
.details { display: grid; grid-template-columns: max-content 1fr; gap: .25em 1em; margin: 0 0 1.1em; }
.details dt { color: var(--muted); }
.details dd { margin: 0; }
.button {
  display: inline-block;
  font-family: var(--heading);
  padding: .6em 1.1em;
  color: var(--paper) !important;
  background: var(--ink);
  border-radius: 4px;
  text-decoration: none !important;
}
.button:hover, .button:focus-visible { background: var(--link-hover-bg); color: var(--link-hover-ink) !important; }

.toc { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.toc li { padding: .2rem 0; }
.toc .date { margin: 0 0 0 .4em; }
h3.year { font-size: 1.2rem; margin: 1.5rem 0 .4rem; border-bottom: 1px solid var(--rule); }

.site-footer {
  font-family: var(--heading);
  font-size: .8rem;
  color: var(--muted);
  text-align: center;
  padding: 1rem 16px 1.5rem;
  border-top: 1px solid var(--rule);
}
.site-footer p { margin: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

@media (min-width: 700px) {
  body { padding: 20px 0; }
  .columns { padding: 0 2rem; }
  .sidebar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 160px;
    column-gap: 2rem;
    align-items: start;
  }
  .sidebar > * { grid-column: 1; }
  .sidebar > .badge { grid-column: 2; grid-row: 1 / span 6; }
}