/* ---------- Theme tokens ---------- */
:root {
  --bg: #fdfdfc;
  --text: #1f2328;
  --muted: #5b6470;
  --accent: #8c1d40;        /* change to your school color */
  --border: #e3e5e8;
  --card: #f5f6f7;
  --banner-bg: #fbeef2;
  --max: 820px;
  --font: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --text: #e6e8eb;
    --muted: #9aa3ad;
    --accent: #e4799b;
    --border: #2c3036;
    --card: #1d2024;
    --banner-bg: #2a1c22;
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-family: var(--sans); line-height: 1.25; }
h1 { font-size: 2rem; margin: 0 0 .25rem; }
h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 1rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--border);
}
h3 { font-size: 1.05rem; margin: 0 0 .25rem; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }

/* ---------- Header / nav ---------- */
header.site {
  border-bottom: 1px solid var(--border);
  font-family: var(--sans);
}
header.site .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.site-name { font-weight: 600; font-size: 1.1rem; color: var(--text); }
nav a {
  color: var(--muted);
  margin-left: 1.25rem;
  font-size: .95rem;
}
nav a:first-child { margin-left: 0; }
nav a.active, nav a:hover { color: var(--accent); text-decoration: none; }

main { padding: 2.5rem 0 3rem; }

/* ---------- Home intro ---------- */
.intro {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  align-items: start;
}
.intro img {
  width: 200px;
  height: 200px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border);
}
.title-line { font-family: var(--sans); color: var(--muted); margin: 0 0 1rem; }
.links { font-family: var(--sans); font-size: .95rem; margin-top: 1rem; }
.links a { display: inline-block; margin-right: 1rem; }

.banner {
  background: var(--banner-bg);
  border-left: 4px solid var(--accent);
  padding: .9rem 1.1rem;
  margin: 2rem 0 0;
  border-radius: 4px;
  font-family: var(--sans);
  font-size: .95rem;
}

/* ---------- Papers ---------- */
.paper { margin-bottom: 1.6rem; }
.paper.featured {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.2rem 1.3rem;
}
.paper .meta { color: var(--muted); font-size: .95rem; margin: 0 0 .35rem; }
.paper .actions { font-family: var(--sans); font-size: .9rem; }
.paper .actions a { margin-right: .9rem; }
details summary {
  cursor: pointer;
  font-family: var(--sans);
  font-size: .9rem;
  color: var(--accent);
  display: inline-block;
}
details p { margin: .5rem 0 0; font-size: .97rem; }

/* ---------- Lists / references ---------- */
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { margin-bottom: .75rem; }
.refs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem 1.5rem;
}
.refs div { font-size: .95rem; }
.refs strong { font-family: var(--sans); }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  font-family: var(--sans);
  font-size: .85rem;
  color: var(--muted);
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  body { font-size: 17px; }
  .intro { grid-template-columns: 1fr; gap: 1.25rem; }
  .intro img { width: 150px; height: 150px; }
  nav a { margin-left: 1rem; }
}

/* ---------- Print ---------- */
@media print {
  header.site nav, footer, details summary { display: none; }
  details > p { display: block; }
  a { color: inherit; }
}