/* ============================================================================
   Styling for the whole site. Safe to tweak colours/sizes here.
   The main colour is the --accent variable just below.
   ============================================================================ */

:root {
  --accent: #1f6feb;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --text: #1f2328;
  --text-soft: #59636e;
  --text-dim: #737d87;
  --border: #d1d9e0;
  --max: 960px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial,
          "Noto Sans", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #4493f8;
    --bg: #0d1117;
    --bg-soft: #161b22;
    --text: #e6edf3;
    --text-soft: #9198a1;
    --text-dim: #aab1b9;
    --border: #2a313c;
  }
}

* { 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: 16px;
  line-height: 1.65;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.3; font-weight: 600; }
h1 { font-size: 1.6rem; margin: 0 0 .2rem; }
h2 {
  font-size: 1.2rem;
  margin: 2.4rem 0 1rem;
  padding-bottom: .3rem;
  border-bottom: 1px solid var(--border);
}
h3 { font-size: 1.02rem; margin: 1.4rem 0 .3rem; }

p { margin: 0 0 1rem; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .4rem 1rem;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand { display: flex; flex-direction: column; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-name { font-weight: 600; font-size: 1.05rem; }
.brand-role { color: var(--text-soft); font-size: .82rem; }

.site-nav { display: flex; gap: 1.1rem; flex-wrap: wrap; }
.site-nav a { color: var(--text-soft); font-size: .95rem; }
.site-nav a.active { color: var(--text); font-weight: 600; }
.site-nav a:hover { color: var(--accent); text-decoration: none; }

/* ---------- Layout ---------- */
main { padding: 2.4rem 0 3rem; }

.intro {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  flex-wrap: wrap;
}
.intro .photo {
  flex: 0 0 200px;
  max-width: 200px;
}
.intro .photo img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
}
.intro .photo .caption {
  color: var(--text-soft);
  font-size: .8rem;
  margin-top: .5rem;
}
.intro .bio { flex: 1 1 320px; min-width: 260px; }
.intro .bio h1 { margin-top: 0; }
.subtitle { color: var(--text-soft); margin-top: 0; }

/* Bio text: body copy light grey, bold words at full contrast */
.intro .bio p { color: var(--text-dim); }
.intro .bio p strong { color: var(--text); font-weight: 600; }

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .9rem;
  margin: 1rem 0 0;
  font-size: .92rem;
}

/* Link buttons (email / CV / profiles) */
.btn-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.1rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .38rem .8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  font-size: .88rem;
  line-height: 1;
}
.btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

/* ---------- News ---------- */
.news-list { list-style: none; padding: 0; margin: 0; }
.news-list li {
  display: flex;
  gap: 1rem;
  padding: .55rem 0;
  border-bottom: 1px dashed var(--border);
}
.news-list li:last-child { border-bottom: none; }
.news-list li.hidden { display: none; }
.news-date {
  flex: 0 0 84px;
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
  font-size: .9rem;
  padding-top: .05rem;
}
.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: .5rem 0 0;
  font: inherit;
  font-size: .9rem;
}
.link-btn:hover { text-decoration: underline; }

/* ---------- Publications ---------- */
.pub-list { list-style: none; padding: 0; margin: 0; }
.pub {
  display: flex;
  gap: 1.1rem;
  padding: .95rem 0;
  border-bottom: 1px solid var(--border);
}
.pub:last-child { border-bottom: none; }

.pub-thumb { flex: 0 0 128px; align-self: flex-start; display: block; }
.pub-thumb img {
  width: 128px;
  height: auto;
  max-height: 172px;
  object-fit: cover;
  object-position: top center;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #fff;
  display: block;
  transition: transform .12s ease, box-shadow .12s ease;
}
.pub-thumb:hover img {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, .18);
}
.pub-body { flex: 1 1 auto; min-width: 0; }

.pub-title { font-weight: 600; }
.pub-authors { font-size: .93rem; }
.pub-venue { color: var(--text-soft); font-size: .9rem; font-style: italic; }
.me { border-bottom: 2px solid var(--accent); }
.pub-summary {
  font-size: .9rem;
  color: var(--text-soft);
  margin-top: .4rem;
  max-width: 66ch;
}
.pub-links { margin-top: .3rem; font-size: .87rem; }
.pub-links a { font-weight: 500; }
.dot { color: var(--text-soft); margin: 0 .5rem; }

.year-group { margin-bottom: 1rem; }
.year-head {
  font-size: 1.05rem;
  color: var(--text-soft);
  border: none;
  margin: 2rem 0 .2rem;
}

/* ---------- Generic content (CV / Teaching) ---------- */
.entry {
  padding: .75rem .95rem;
  margin-bottom: .5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: var(--bg-soft);
  transition: border-color .12s ease, transform .12s ease;
}
.entry:hover { border-color: var(--accent); transform: translateX(2px); }
.entry .when {
  display: inline-block;
  margin-bottom: .3rem;
  padding: .06rem .55rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--text-soft);
  font-size: .76rem;
  font-variant-numeric: tabular-nums;
}
.entry .what { font-weight: 600; }
.entry .where { color: var(--text-soft); font-size: .92rem; margin-top: .12rem; }

ul.plain { padding-left: 1.1rem; }
ul.plain li { margin: .35rem 0; }

.callout {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .8rem 1rem;
  font-size: .92rem;
  color: var(--text-soft);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.6rem 0 2.4rem;
  color: var(--text-soft);
  font-size: .88rem;
}
.foot-links { margin-bottom: .3rem; }
.foot-note { font-size: .82rem; }

/* ---------- Small screens ---------- */
@media (max-width: 560px) {
  .intro { gap: 1.2rem; }
  .intro .photo { flex-basis: 130px; max-width: 130px; }
  .news-list li { flex-direction: column; gap: .1rem; }
  .news-date { flex-basis: auto; }
  .pub { gap: .8rem; }
  .pub-thumb { flex-basis: 92px; }
  .pub-thumb img { width: 92px; max-height: 128px; }
}