/* ------------------------------------------------------------
   cianruane.com — stylesheet
   Fonts: Cormorant Garamond (headings) + Source Sans 3 (body)
   Palette: warm off-white ground, deep green accent
   ------------------------------------------------------------ */

:root {
  --ground: #fbfaf7;
  --ink: #26292b;
  --ink-soft: #5d6266;
  --ink-faint: #9a9fa3;
  --accent: #1f4d3f;        /* deep green */
  --accent-soft: #3f7a66;
  --rule: #e2ded6;
  --rule-soft: rgba(226, 222, 214, 0.55);
  --serif: "Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  --sans: "Source Sans 3", "Helvetica Neue", Arial, sans-serif;
  --max: 980px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 17px; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--ground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(251, 250, 247, 0.9);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 1.5rem;
  height: 62px; display: flex; align-items: center; justify-content: space-between;
}
.nav-name {
  font-family: var(--serif); font-size: 1.35rem; font-weight: 600;
  color: var(--accent); letter-spacing: 0.01em;
}
.nav-name:hover { text-decoration: none; }
.nav-links { display: flex; gap: 1.8rem; list-style: none; }
.nav-links a {
  font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-soft); padding-bottom: 3px;
  border-bottom: 1.5px solid transparent; transition: color .2s, border-color .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); border-color: var(--accent); text-decoration: none; }

/* ---------- Home / hero ---------- */
.hero {
  max-width: var(--max); margin: 0 auto; padding: 4.5rem 1.5rem 3rem;
  display: grid; grid-template-columns: 280px 1fr; gap: 3.5rem; align-items: start;
}
.hero-photo {
  width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: top;
  border-radius: 4px; filter: grayscale(100%);
  box-shadow: 0 10px 30px rgba(38, 41, 43, 0.10);
}
.hero-name {
  font-family: var(--serif); font-size: 3rem; font-weight: 500; line-height: 1.05;
  color: var(--ink); margin-bottom: 0.4rem;
}
.hero-role { font-size: 1.05rem; color: var(--ink-soft); margin-bottom: 1.8rem; }
.hero-role a { color: var(--accent); }
.hero-bio p { margin-bottom: 1rem; max-width: 60ch; }
.hero-bio p:last-child { margin-bottom: 0; }

.hero-facts {
  display: grid; grid-template-columns: max-content 1fr; column-gap: 1.5rem; row-gap: .45rem;
  margin: 2rem 0; padding: 1.4rem 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  font-size: 0.92rem;
}
.hero-facts dt { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); padding-top: .2rem; }
.hero-facts dd { color: var(--ink); }

.hero-contact { font-size: .92rem; color: var(--ink-soft); margin-top: 1.8rem; padding-top: 1.4rem; border-top: 1px solid var(--rule); }
.hero-contact p { margin-bottom: .35rem; }
.hero-contact .profiles a { margin-right: 1.1rem; }
.hero-contact .profiles a::before { content: "↗ "; color: var(--ink-faint); }
.hero-actions { display: flex; gap: .8rem; margin-top: 1.6rem; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: .55rem 1.1rem; border-radius: 3px; font-size: .82rem;
  letter-spacing: .08em; text-transform: uppercase; border: 1px solid var(--accent);
  color: var(--accent); transition: background .2s, color .2s;
}
.btn:hover { background: var(--accent); color: #fff; text-decoration: none; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-soft); border-color: var(--accent-soft); }

.hero-fields { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1.4rem; }
.tag {
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); border: 1px solid rgba(31,77,63,.3); border-radius: 999px; padding: .2rem .7rem;
}

/* ---------- Research page ---------- */
.page-head { max-width: var(--max); margin: 0 auto; padding: 3.5rem 1.5rem 1rem; }
.page-title { font-family: var(--serif); font-size: 2.6rem; font-weight: 500; color: var(--ink); line-height: 1.1; }
.page-sub { color: var(--ink-soft); margin-top: .4rem; font-size: .95rem; }
.page-sub a { margin-right: 1.1rem; }

.content { max-width: var(--max); margin: 0 auto; padding: 1rem 1.5rem 3rem; }
.section { margin-bottom: 3rem; }
.section-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.2rem; }
.section-head h2 {
  font-family: var(--sans); font-size: .74rem; font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent-soft); white-space: nowrap;
}
.section-head::after { content: ""; flex: 1; height: 1px; background: var(--rule); }

.paper { padding: 1.25rem 0; border-bottom: 1px solid var(--rule-soft); }
.paper:last-child { border-bottom: none; }
.paper h3 { font-family: var(--serif); font-size: 1.32rem; font-weight: 600; line-height: 1.3; color: var(--ink); margin-bottom: .2rem; }
.paper h3 a { color: inherit; background-image: linear-gradient(var(--accent), var(--accent)); background-repeat: no-repeat; background-size: 0 1.5px; background-position: 0 100%; transition: background-size .25s ease, color .2s; }
.paper h3 a:hover { text-decoration: none; color: var(--accent); background-size: 100% 1.5px; }
.paper .with { font-size: .9rem; color: var(--ink-soft); }
.paper .venue { font-size: .92rem; margin-top: .35rem; color: var(--ink-soft); }
.paper .venue .j {
  font-family: var(--serif); font-size: 1.05rem; font-weight: 600; font-style: italic;
  color: var(--accent); margin-right: .35rem;
}
.paper .venue .status { font-weight: 600; color: var(--ink); }
.paper .note { font-size: .84rem; color: var(--ink-soft); font-style: italic; margin-top: .15rem; }
.paper .links { font-size: .82rem; margin-top: .35rem; }
.paper .links a { margin-right: .9rem; }
.paper .links a::before { content: "↗ "; color: var(--ink-faint); }

/* collapsible abstract */
.paper details { margin-top: .4rem; font-size: .88rem; }
.paper summary { cursor: pointer; color: var(--accent-soft); font-size: .8rem; list-style: none; user-select: none; display: inline-block; }
.paper summary::-webkit-details-marker { display: none; }
.paper summary::before { content: "+ "; }
.paper details[open] summary::before { content: "− "; }
.paper details p {
  margin-top: .55rem; padding: .9rem 1rem; color: var(--ink-soft); line-height: 1.6;
  background: rgba(226, 222, 214, .18); border-left: 2px solid var(--rule); text-align: justify; hyphens: auto;
}

/* compact lists (discussions, reports) */
.item { padding: .7rem 0; border-bottom: 1px solid var(--rule-soft); font-size: .95rem; }
.item:last-child { border-bottom: none; }
.item .t { font-weight: 600; color: var(--ink); }
.item .by { color: var(--ink-soft); }
.item .where { display: block; font-size: .85rem; color: var(--ink-soft); margin-top: .1rem; }

/* ---------- Footer ---------- */
footer {
  max-width: var(--max); margin: 0 auto; padding: 2rem 1.5rem 2.5rem;
  border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-size: .8rem; color: var(--ink-faint);
}
footer a { color: var(--ink-faint); margin-left: 1.2rem; }
footer a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  html { font-size: 16px; }
  .hero { grid-template-columns: 1fr; gap: 2rem; padding-top: 2.5rem; }
  .hero-photo { max-width: 240px; }
  .hero-name { font-size: 2.4rem; }
  .page-title { font-size: 2.1rem; }
  .nav-links { gap: 1.1rem; }
  .nav-links a { font-size: .72rem; }
  footer { flex-direction: column; }
  footer a { margin-left: 0; margin-right: 1.2rem; }
}