/* Single stylesheet, no framework, no webfonts. System font stack means zero
   network requests for typography and no layout shift on load. */

:root {
  /* Required for the CSS `light-dark()` colours Zola emits on highlighted code
     spans. Also makes scrollbars and form controls follow the system theme. */
  color-scheme: light dark;

  --bg: #fdfdfc;
  --fg: #1c1c1a;
  --muted: #6b6b66;
  --accent: #2c5f7c;
  --rule: #e3e3df;
  --code-bg: #f2f2ee;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #d8d8d2;
    --muted: #8b8b85;
    --accent: #7fb3d0;
    --rule: #2c2c31;
    --code-bg: #1f1f24;
  }
}

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

body {
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  max-width: 42rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* Header ------------------------------------------------------------------ */

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-bottom: 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
}

.site-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  font-size: 0.925rem;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-header nav a:hover,
.site-header nav a.active {
  color: var(--fg);
  text-decoration: underline;
}

/* Typography -------------------------------------------------------------- */

h1 {
  font-size: 1.7rem;
  line-height: 1.25;
  margin: 0 0 1.5rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2.5rem 0 0.75rem;
}

h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  font-size: 0.9em;
}

pre {
  background: var(--code-bg);
  padding: 0.9rem 1rem;
  border-radius: 5px;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

blockquote {
  margin: 1.25rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
}

/* CV frontpage ------------------------------------------------------------ */

/* On the CV, a bold lead followed by an em-dashed date reads as one line, so
   the paragraph directly after a bold-led line gets pulled tight against it. */
.cv h2 {
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--rule);
}

.cv strong + em,
.cv em {
  color: var(--muted);
  font-style: normal;
}

/* Lists of things --------------------------------------------------------- */

.post-list,
.entry-list,
.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
}

.post-list time {
  flex: 0 0 6rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.9rem;
}

.post-list .excerpt {
  flex-basis: 100%;
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.925rem;
}

.entry {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule);
}

.entry h2 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.entry .summary p:last-child {
  margin-bottom: 0;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.meta .venue {
  font-style: italic;
}

.links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin: 0.9rem 0 0;
  font-size: 0.9rem;
}

.button {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  text-decoration: none;
}

.button:hover {
  background: var(--accent);
  color: var(--bg);
}

.tag {
  padding: 0.05rem 0.45rem;
  background: var(--code-bg);
  border-radius: 3px;
  font-size: 0.85rem;
  text-decoration: none;
}

.empty {
  padding: 1.5rem 0;
  color: var(--muted);
}

/* Post -------------------------------------------------------------------- */

.post img {
  max-width: 100%;
  height: auto;
}

.post .meta {
  margin-top: -0.75rem;
}

/* Zola's `insert_anchor_links = "heading"` wraps each heading in a link. Hide
   the "#" until the heading is hovered so it does not clutter the page. */
.zola-anchor {
  margin-left: 0.35rem;
  color: var(--muted);
  opacity: 0;
  text-decoration: none;
}

h1:hover > .zola-anchor,
h2:hover > .zola-anchor,
h3:hover > .zola-anchor {
  opacity: 1;
}

/* Footer ------------------------------------------------------------------ */

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}