/* ------------------------------------------------------------------------
   Minimal / clean academic theme for org-mode HTML export.
   Single accent colour, generous whitespace, content-first typography.
   ------------------------------------------------------------------------ */

:root {
  --accent: #7a3b2e;       /* muted brick/terracotta accent */
  --ink: #1d1d1f;
  --ink-soft: #4a4a4d;
  --rule: #e3e0da;
  --paper: #fbfaf8;
  --max-width: 46rem;
  --max-width-wide: 54rem;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  padding: 0 1.25rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  --content-width: var(--max-width);
}

/* the homepage has a .masthead section and gets extra room for the
   two-column layout below; other pages (e.g. publications) stay narrower
   for comfortable reading */
body:has(.masthead) { --content-width: var(--max-width-wide); }

#content,
#preamble,
#postamble {
  max-width: var(--content-width);
  margin: 0 auto;
}

#preamble { padding-top: 1.5rem; }

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--rule);
}

.site-nav a {
  color: var(--ink-soft);
  border-bottom: none;
}

.site-nav a:hover { color: var(--accent); }
#postamble {
  padding: 3rem 0 4rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
  border-top: 1px solid var(--rule);
  margin-top: 3rem;
}

/* -- headings ----------------------------------------------------------- */

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
}

/* org exports a top-level "* Heading" as <h2> (h1 is reserved for the
   document #+TITLE, which we suppress on the index page). */
.masthead h2 {
  font-size: 2rem;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--ink);
  border-bottom: none;
  padding-bottom: 0;
}

.masthead p {
  margin: 0 0 2rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

h2 {
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin: 2.75rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}

h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.35rem;
}

h4 { font-size: 0.95rem; margin: 1.25rem 0 0.35rem; }

/* -- body text ------------------------------------------------------------ */

p { margin: 0 0 1rem; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

a:hover { border-bottom-color: currentColor; }

ul, ol { padding-left: 1.25rem; margin: 0 0 1rem; }
li { margin-bottom: 0.4rem; }

hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2rem 0;
}

/* -- homepage two-column layout --------------------------------------------
   Scoped with :has() so publications.html (no .masthead) keeps the plain
   single-column flow. Contact runs as a sidebar alongside News/Research/
   Teaching instead of sitting across the top of the page. */

#content:has(.masthead) {
  display: grid;
  grid-template-columns: 14rem 1fr;
  column-gap: 2.5rem;
  row-gap: 1.75rem;
  grid-template-areas:
    "masthead masthead"
    "sidebar  about"
    "sidebar  news"
    "sidebar  research"
    "sidebar  teaching";
}

#content:has(.masthead) .masthead { grid-area: masthead; }
#content:has(.masthead) .contact { grid-area: sidebar; }
#content:has(.masthead) .about { grid-area: about; }
#content:has(.masthead) .news { grid-area: news; }
#content:has(.masthead) .research { grid-area: research; }
#content:has(.masthead) .teaching { grid-area: teaching; }

/* Each grid cell's own h2 is the first thing in it, so the section-spacing
   top margin (set below in the generic h2 rule) would otherwise push
   "News" down relative to "Contact" since Contact's is reset separately.
   Zero it everywhere here; row-gap on the grid handles spacing instead. */
#content:has(.masthead) > div > h2 { margin-top: 0; }

@media (max-width: 720px) {
  #content:has(.masthead) {
    grid-template-columns: 1fr;
    grid-template-areas:
      "masthead"
      "sidebar"
      "about"
      "news"
      "research"
      "teaching";
  }
}

/* -- contact block -------------------------------------------------------- */

.contact {
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.contact a { color: var(--ink); }

/* -- news ------------------------------------------------------------------ */

.news ul { list-style: none; padding-left: 0; }
.news li {
  padding-left: 1.1rem;
  position: relative;
  margin-bottom: 0.85rem;
}
.news li::before {
  content: "\2013"; /* en dash */
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* -- publications ---------------------------------------------------------- */

.rss-link {
  text-align: right;
  margin: -1rem 0 1.5rem;
}

.rss-link a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
  border-bottom: none;
}

.rss-link a:hover { color: var(--accent); }

/* pub-year is a top-level "*" headline -> <h2>; pub-entry is "**" -> <h3> */
.pub-year h2 {
  font-size: 1.4rem;
  text-transform: none;
  letter-spacing: normal;
  color: var(--ink-soft);
  font-weight: 500;
  margin: 2.5rem 0 1rem;
  border-bottom: none;
  padding-bottom: 0;
}

.pub-entry {
  margin-bottom: 1.35rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--rule);
}

.pub-entry h3 {
  font-size: 1rem;
  color: var(--ink);
  margin: 0 0 0.25rem;
  font-weight: 600;
}

.pub-entry p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.pub-entry a { color: inherit; border-bottom: 1px solid var(--rule); }
.pub-entry a:hover { border-bottom-color: var(--accent); color: var(--accent); }

/* -- responsive ------------------------------------------------------------- */

@media (max-width: 600px) {
  body { font-size: 16px; }
  .masthead h2 { font-size: 1.6rem; }
}