:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #1d1d1b;
  --muted: #6b6a66;
  --rule: #e4e1da;
  --accent: #257b93;       /* di.uoa.gr teal */
  --accent-dark: #1a5a6c;
  --accent-soft: #eaf3f6;
  --navy: #1f2a44;        /* DIT logo navy */
  --serif: "Charter", "Iowan Old Style", "Source Serif Pro", "Source Serif 4", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  border-top: 5px solid var(--accent);
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 64px;
}

/* ---------- sidebar ---------- */
.side {
  position: sticky;
  top: 0;
  align-self: start;
  padding: 56px 0 32px;
}
.side img {
  width: 100%;
  max-width: 220px;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 4px;
  display: block;
  filter: saturate(0.92);
}
.side h1 {
  font: 600 28px/1.15 var(--serif);
  color: var(--navy);
  margin: 20px 0 6px;
  letter-spacing: -0.01em;
}
.side h1 a { color: inherit; }
.side h1 a:hover { text-decoration: none; color: var(--accent); }
.side .role { color: var(--muted); font-size: 15px; line-height: 1.45; margin: 0 0 20px; }
.side nav { display: flex; flex-direction: column; gap: 2px; margin-bottom: 24px; }
.side nav a {
  color: var(--ink);
  font-size: 15px;
  padding: 3px 0;
}
.side nav a:hover, .side nav a[aria-current] { color: var(--accent); text-decoration: none; }
.side .links { font-size: 14px; display: flex; flex-wrap: wrap; gap: 4px 14px; margin-bottom: 18px; }
.side .contact { font-size: 14px; color: var(--muted); line-height: 1.55; }
.side .contact span { color: var(--ink); }
.side .contact { border-top: 1px solid var(--rule); padding-top: 16px; }

/* ---------- main ---------- */
main { padding: 56px 0 96px; min-width: 0; }
section { margin-bottom: 56px; scroll-margin-top: 24px; }
h2 {
  font: 600 13px/1 var(--sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 22px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
h2::after {
  content: ""; position: absolute; left: 0; bottom: -1px;
  width: 40px; height: 3px; background: var(--accent);
}
h3 { font: 600 19px/1.3 var(--serif); margin: 0 0 4px; color: var(--navy); }
p { margin: 0 0 14px; }
.lede {
  font: 400 22px/1.5 var(--serif);
  color: var(--navy);
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  letter-spacing: -0.005em;
  margin-bottom: 20px;
}
.muted { color: var(--muted); }

/* research themes */
.themes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px 32px; }
.themes > div {
  background: var(--accent-soft);
  border-top: 3px solid var(--accent);
  border-radius: 4px;
  padding: 16px 18px 18px;
}
.themes h3 { font-size: 18px; }
.themes .wide { grid-column: 1 / -1; }
.themes p { font-size: 15px; color: #4a5560; margin: 0; }

/* news */
.news { list-style: none; margin: 0; padding: 0; }
.news li { display: grid; grid-template-columns: 84px 1fr; gap: 16px; padding: 7px 0; }
.news li { border-bottom: 1px solid var(--rule); padding: 10px 0; }
.news li:last-child { border-bottom: 0; }
.news time {
  font: 600 12.5px/1 var(--mono); color: var(--accent-dark);
  background: var(--accent-soft); border-radius: 3px;
  padding: 6px 8px; justify-self: start; align-self: start; margin-top: 2px;
}

/* publications */
.pubs { list-style: none; margin: 0; padding: 0; }
.pub { padding: 10px 0 12px; border-bottom: 1px solid var(--rule); }
.pub:last-child { border-bottom: 0; }
.pub .t { font: 500 17px/1.4 var(--serif); color: var(--ink); }
a.t:hover { color: var(--accent); }
.pub .a { font-size: 14.5px; color: var(--muted); }
.pub .a b { color: var(--ink); font-weight: 600; }
.pub .v { font-size: 14.5px; font-style: italic; color: var(--muted); }
.pub .award {
  display: inline-block;
  font: 600 11px/1 var(--sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #8a5a00;
  background: #fbefd5;
  padding: 4px 7px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: 2px;
}
.pub a.pdf {
  font: 600 11px/1 var(--sans); font-style: normal; letter-spacing: 0.04em;
  color: var(--accent); border: 1px solid var(--accent); border-radius: 3px;
  padding: 3px 6px; margin-left: 6px; vertical-align: 1px;
}
.pub a.pdf:hover { background: var(--accent); color: #fff; text-decoration: none; }
.year {
  font: 600 15px/1 var(--mono);
  color: var(--accent);
  margin: 32px 0 4px;
}
.year:first-of-type { margin-top: 8px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; }
.filters button {
  font: 500 13.5px/1 var(--sans);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}
.filters button:hover { border-color: var(--accent); }
.filters button[aria-pressed="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.filters .count { opacity: 0.6; margin-left: 4px; }

/* generic lists */
.plain { list-style: none; margin: 0; padding: 0; }
.plain li { padding: 6px 0; }
.dl { display: grid; grid-template-columns: 140px 1fr; gap: 6px 20px; margin: 0; }
.dl dt { color: var(--accent-dark); font: 600 13.5px/1.75 var(--mono); }
.dl dd { margin: 0; }

.courses { display: grid; gap: 18px; }
.courses .code {
  font: 600 12.5px/1 var(--mono); color: #fff; background: var(--accent);
  border-radius: 3px; padding: 5px 7px; margin-right: 10px; vertical-align: 2px;
}

footer { color: var(--muted); border-top-color: var(--accent); font-size: 13px; padding-top: 24px; border-top: 1px solid var(--rule); }

/* ---------- small screens ---------- */
@media (max-width: 860px) {
  .wrap { grid-template-columns: 1fr; gap: 0; padding: 0 16px; }
  .side { position: static; padding: 32px 0 8px; display: grid; grid-template-columns: 96px 1fr; gap: 0 18px; align-items: center; }
  .side img { max-width: 96px; grid-row: span 2; }
  .side h1 { margin: 0; font-size: 24px; }
  .side h1 a { color: inherit; }
.side h1 a:hover { text-decoration: none; color: var(--accent); }
.side .role { margin: 4px 0 0; }
  .side nav, .side .links, .side .contact { grid-column: 1 / -1; }
  .side nav { flex-direction: row; flex-wrap: wrap; gap: 4px 16px; margin: 20px 0 12px; }
  .side .contact { display: none; }
  main { padding-top: 24px; }
  .themes { grid-template-columns: 1fr; }
  .lede { font-size: 19px; }
  .news li { grid-template-columns: 1fr; gap: 0; }
  .dl { grid-template-columns: 1fr; }
  .dl dd { margin-bottom: 8px; }
}