/* ============================================================
   Hvidsten research group — modern botanical theme
   ============================================================ */
:root {
  --green-900: #17352a;
  --green-800: #1f4a37;
  --green-700: #2c6a4a;
  --green-600: #3a8159;
  --green-500: #4f9d6f;
  --green-200: #cfe6d8;
  --green-100: #e6f1ea;
  --green-50:  #f2f8f4;
  --sand:      #f8f9f6;
  --ink:       #1c2a23;
  --muted:     #5c6b62;
  --line:      #e2e8e3;
  --white:     #ffffff;
  --shadow:    0 1px 2px rgba(23,53,42,.04), 0 8px 28px rgba(23,53,42,.07);
  --radius:    14px;
  --maxw:      1100px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--sand);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--green-700); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(248,249,246,.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; min-height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem; color: var(--green-900);
  letter-spacing: -.01em;
}
.brand:hover { text-decoration: none; }
.brand .leaf {
  width: 26px; height: 26px; flex: none;
  color: var(--green-600);
}
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  color: var(--ink); font-size: .93rem; font-weight: 500;
  padding: 8px 11px; border-radius: 8px; white-space: nowrap;
}
.nav-links a:hover { background: var(--green-100); color: var(--green-800); text-decoration: none; }
.nav-links a.active { color: var(--green-800); background: var(--green-100); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; cursor: pointer; color: var(--ink);
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 400px at 80% -10%, var(--green-100), transparent 60%),
    linear-gradient(180deg, var(--green-50), var(--sand));
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: url('../img/network.png') no-repeat center center;
  background-size: 115%;
  opacity: .18; pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px;
  align-items: center; padding: 72px 0 64px;
}
.eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; color: var(--green-700);
  background: var(--green-100); padding: 5px 12px; border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.08; letter-spacing: -.02em; margin: 0 0 18px;
  color: var(--green-900); font-weight: 600;
}
.hero .lead { font-size: 1.18rem; color: var(--muted); margin: 0 0 28px; max-width: 34em; }
.hero-media { position: relative; }
.hero-media img {
  width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow);
  background: var(--white);
}

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--green-700); color: #fff; font-weight: 600; font-size: .95rem;
  padding: 12px 20px; border-radius: 10px; border: 1px solid var(--green-700);
  transition: background .15s, transform .15s;
}
.btn:hover { background: var(--green-800); text-decoration: none; transform: translateY(-1px); }
.btn.secondary { background: transparent; color: var(--green-800); border-color: var(--green-200); }
.btn.secondary:hover { background: var(--green-100); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Sections ---------- */
section { padding: 64px 0; }
.section-head { max-width: 60ch; margin-bottom: 36px; }
.section-head h2 {
  font-family: var(--font-serif); font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.1rem); letter-spacing: -.02em;
  color: var(--green-900); margin: 0 0 10px;
}
.section-head p { color: var(--muted); font-size: 1.05rem; margin: 0; }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow);
  transition: transform .15s, box-shadow .15s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 34px rgba(23,53,42,.12); }
.card h3 { font-size: 1.12rem; margin: 0 0 8px; color: var(--green-900); letter-spacing: -.01em; }
.card p { color: var(--muted); margin: 0 0 14px; font-size: .96rem; flex: 1; }
.card .tag { font-size: .78rem; color: var(--green-700); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; }
.card a.more { font-weight: 600; font-size: .92rem; }

/* ---------- Profile block ---------- */
.profile {
  display: grid; grid-template-columns: 260px 1fr; gap: 40px; align-items: start;
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow);
}
.profile img { border-radius: 12px; width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.profile h3 { font-size: 1.4rem; margin: 0 0 4px; color: var(--green-900); font-family: var(--font-serif); }
.profile .role { color: var(--muted); margin: 0 0 18px; }
.profile .meta { font-size: .95rem; }
.profile .meta p { margin: 4px 0; color: var(--muted); }
.linkline { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 6px; }
.linkline .sep { color: var(--line); }

/* ---------- Funders ---------- */
.funders { border-top: 1px solid var(--line); background: var(--white); }
.funders .wrap { padding-top: 44px; padding-bottom: 44px; }
.funders p.k { text-align: center; color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; margin: 0 0 26px; }
.funder-row { display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap; }
.funder-row img { height: 54px; width: auto; opacity: .85; filter: grayscale(.15); transition: opacity .15s; }
.funder-row img:hover { opacity: 1; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--green-900); color: #cfe0d6; margin-top: 40px;
  padding: 48px 0 40px; font-size: .92rem;
}
.site-footer a { color: #fff; }
.footer-grid { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.site-footer .brand-f { font-weight: 700; color: #fff; font-size: 1.05rem; margin-bottom: 6px; }
.site-footer .muted-f { color: #9fbbab; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }

/* ---------- Generic content pages ---------- */
.page-head { background: linear-gradient(180deg, var(--green-50), var(--sand)); border-bottom: 1px solid var(--line); padding: 56px 0 40px; }
.page-head h1 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.9rem,4vw,2.6rem); color: var(--green-900); margin: 0 0 8px; letter-spacing: -.02em; }
.page-head p { color: var(--muted); font-size: 1.08rem; margin: 0; max-width: 60ch; }
.prose { max-width: 760px; }
.prose h2 { font-family: var(--font-serif); color: var(--green-900); margin: 40px 0 12px; font-size: 1.5rem; }
.prose h3 { color: var(--green-800); margin: 26px 0 8px; font-size: 1.15rem; }
.prose p { margin: 0 0 16px; }
.subnav { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.subnav a { font-size: .9rem; font-weight: 600; padding: 7px 14px; border-radius: 999px; background: var(--white); border: 1px solid var(--line); color: var(--green-800); }
.subnav a:hover { background: var(--green-100); text-decoration: none; }

/* ---------- Prose lists / content pages ---------- */
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 1.3em; }
.prose li { margin: 6px 0; }
.prose a { font-weight: 500; }
.prose hr { border: none; border-top: 1px solid var(--line); margin: 44px 0; }
.prose-wide { max-width: 860px; }
.prose img { border-radius: 10px; margin: 8px 0; }
main section:first-child { padding-top: 44px; }

/* link columns (collaborators, links) */
.link-cols ul { columns: 2; column-gap: 40px; padding-left: 1.1em; }
@media (max-width: 640px){ .link-cols ul { columns: 1; } }

/* ---------- Team grid ---------- */
.team-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 22px; margin: 18px 0 8px;
}
.person { margin: 0; text-align: center; }
.person img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover; border-radius: 12px;
  background: var(--green-50); box-shadow: var(--shadow);
}
.person figcaption { margin-top: 10px; }
.person .nm { display: block; font-weight: 600; color: var(--green-900); font-size: .95rem; line-height: 1.3; }
.person .rl { display: block; color: var(--muted); font-size: .82rem; margin-top: 2px; }
main h2 { font-family: var(--font-serif); color: var(--green-900); font-size: 1.5rem; margin: 40px 0 6px; letter-spacing: -.01em; }
main h3 { color: var(--green-800); font-size: 1.12rem; margin: 26px 0 6px; }

/* ---------- Tools ---------- */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px,1fr)); gap: 20px; }
.tool {
  display: flex; gap: 18px; align-items: flex-start; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
  transition: transform .15s, box-shadow .15s;
}
.tool:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(23,53,42,.12); }
.tool-icon { flex: none; width: 76px; height: 76px; display: flex; align-items: center; justify-content: center;
  background: var(--green-50); border-radius: 12px; overflow: hidden; }
.tool-icon img { max-width: 100%; max-height: 100%; object-fit: contain; }
.tool h3 { margin: 2px 0 6px; font-size: 1.1rem; }
.tool p { margin: 0; color: var(--muted); font-size: .92rem; }
.tool-grid.muted .tool { opacity: .78; }

/* ---------- Publications ---------- */
.pub-list { list-style: none; padding: 0; margin: 0 0 8px; counter-reset: none; }
.pub-list li {
  position: relative; padding: 16px 0 16px 0; border-bottom: 1px solid var(--line);
  font-size: .96rem; line-height: 1.55;
}
.pub-list li:last-child { border-bottom: none; }
.pub-list a { font-weight: 600; }
.pub-note { color: var(--muted); font-size: .95rem; }
main .prose h2 { border-bottom: 2px solid var(--green-200); padding-bottom: 8px; }

/* ---------- News timeline ---------- */
.news h2 { display: inline-block; background: var(--green-100); color: var(--green-800);
  font-family: var(--font-sans); font-weight: 700; font-size: 1rem; letter-spacing: .02em;
  padding: 4px 14px; border-radius: 999px; }
.news ol, .news ul { list-style: none; padding-left: 0; }
.news ol li, .news ul li { position: relative; padding-left: 20px; margin: 8px 0; color: var(--ink); }
.news ol li::before, .news ul li::before { content: ""; position: absolute; left: 4px; top: 11px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--green-500); }
.news ol ol li::before, .news ul ul li::before { background: var(--green-300, #9ec9ac); }

/* ---------- Cartoons ---------- */
.cartoon-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 18px; align-items: start; }
.cartoon { display: block; background: var(--white); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px; box-shadow: var(--shadow); transition: transform .15s; }
.cartoon:hover { transform: translateY(-3px); }
.cartoon img { width: 100%; height: auto; border-radius: 4px; }

/* ---------- Research theme rows (text + figure side by side) ---------- */
.theme-row { display: grid; grid-template-columns: 1fr 320px; gap: 40px;
  align-items: center; padding: 30px 0; border-bottom: 1px solid var(--line); }
.theme-row:last-of-type { border-bottom: none; }
.theme-text > :first-child { margin-top: 0; }
.theme-fig { margin: 0; }
.theme-fig img { width: 100%; height: auto; max-height: 260px; object-fit: contain;
  border-radius: 12px; box-shadow: var(--shadow); background: var(--white); }
@media (max-width: 720px){
  .theme-row { grid-template-columns: 1fr; gap: 18px; }
  .theme-fig { max-width: 340px; }
}

/* ---------- Author colour code (publications) ---------- */
.au-first     { color: #c9280e; }
.au-second    { color: #d97116; }
.au-secondlast{ color: #1f970e; }
.au-last      { color: #1e66d7; }
.author-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px;
  margin: 0 0 24px; font-size: .82rem; font-weight: 600; }
.author-legend .legend-lead { color: var(--muted); font-weight: 500; }
.author-legend span:not(.legend-lead)::before { content: "\25CF"; margin-right: 5px; }

/* ---------- Photo gallery (research/news) ---------- */
.photo-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 20px; }
.photo { margin: 0; background: var(--white); border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; box-shadow: var(--shadow); }
.photo img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; }
.photo figcaption { padding: 10px 14px; font-size: .84rem; color: var(--muted); line-height: 1.4; }

/* ---------- Two-column layout (publications / news) ---------- */
.pub-layout { display: grid; grid-template-columns: minmax(0,1fr) 250px; gap: 44px; align-items: start; }
.pub-main { min-width: 0; }
.pub-side { position: sticky; top: 84px; }
.side-head { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  color: var(--green-700); margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.cover-column { display: flex; flex-direction: column; gap: 18px; }
.cover { margin: 0; text-align: center; }
.cover img { width: 100%; max-height: 210px; object-fit: contain; border-radius: 6px;
  box-shadow: var(--shadow); background: var(--green-50); }
.cover figcaption { margin-top: 6px; font-size: .76rem; color: var(--muted); }
.photo-column { display: flex; flex-direction: column; gap: 16px; }
.photo-column .photo img { aspect-ratio: 4/3; }
.pub-sub { margin-top: 6px; font-size: .88rem; color: var(--muted); }
@media (max-width: 860px) {
  .pub-layout { grid-template-columns: 1fr; gap: 32px; }
  .pub-side { position: static; order: -1; }
  .cover-column { flex-direction: row; flex-wrap: wrap; }
  .cover { width: 120px; }
  .photo-column { display: grid; grid-template-columns: repeat(auto-fill,minmax(160px,1fr)); }
}

/* card-as-link (teaching hub) */
a.card { text-decoration: none; }
a.card:hover { text-decoration: none; }
a.card .more { color: var(--green-700); font-weight: 600; font-size: .92rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0; }
  .hero-media { max-width: 340px; }
  .cards, .cards.two { grid-template-columns: 1fr; }
  .profile { grid-template-columns: 1fr; }
  .profile img { max-width: 200px; }
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; background: var(--sand);
    border-bottom: 1px solid var(--line); padding: 8px 16px 16px; gap: 2px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-block; }
}