:root {
  --ink: #111;
  --muted: #8d8d8d;
  --line: #e6e6e6;
  --soft: #f5f6f8;
  --blue: #3c51a2;
  --blue-dark: #2c3d7d;
  --max: 1240px;
  --header-h: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, "PT Sans", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(100% - 32px, var(--max)); margin: 0 auto; }
main { flex: 1; padding: 36px 0 72px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 40;
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0 12px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
  min-width: 0;
}
.brand:hover { text-decoration: none; }
.brand img {
  height: 52px;
  width: auto;
  max-width: min(420px, 52vw);
  object-fit: contain;
}
.consortium {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.consortium a { display: flex; align-items: center; }
.consortium img {
  height: 36px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
}
.consortium .logo-ire { height: 42px; }
.consortium .logo-inme { height: 44px; }
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 0;
}
.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}
.main-nav { display: flex; flex-wrap: nowrap; gap: 0; margin: 0; padding: 0; overflow-x: auto; }
.main-nav > li { list-style: none; position: relative; flex: 0 0 auto; }
.main-nav > li > a {
  display: block;
  padding: 10px 9px 12px;
  color: var(--ink);
  font-size: 13px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.main-nav > li > a:hover,
.main-nav > li > a.is-active {
  text-decoration: none;
  border-bottom-color: var(--blue);
  color: var(--blue);
}
.main-nav .sub {
  display: none;
  position: absolute;
  left: 0;
  top: 100%;
  background: #fff;
  border: 1px solid var(--line);
  min-width: 260px;
  padding: 8px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,.06);
  z-index: 30;
}
.main-nav > li:hover > .sub,
.main-nav > li:focus-within > .sub { display: block; }
.main-nav .sub a {
  display: block;
  padding: 8px 16px;
  color: var(--ink);
  font-size: 14px;
}
.main-nav .sub a:hover { background: var(--soft); text-decoration: none; color: var(--blue); }

/* Footer */
.site-footer {
  background: #151515;
  color: #d8d8d8;
  padding: 40px 0 24px;
  margin-top: auto;
}
.site-footer a { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px 40px;
}
.footer-grid h3 {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #9a9a9a;
  font-weight: 600;
}
.footer-grid ul { margin: 0; padding: 0; list-style: none; }
.footer-grid li { margin: 0 0 8px; }
.footer-meta {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid #333;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
  color: #bbb;
}
.footer-meta a { color: #bbb; }

/* Page chrome */
.kicker {
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}
h1 { font-size: 36px; line-height: 1.15; margin: 0 0 16px; font-weight: 650; }
h2 { font-size: 26px; margin: 0 0 16px; font-weight: 650; }
.lead { font-size: 18px; color: #444; max-width: 720px; }
.section { margin: 48px 0; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.more { font-size: 14px; white-space: nowrap; }

/* Teaser — design-fragment */
.teaser {
  display: grid;
  grid-template-columns: minmax(240px, 34%) 1fr;
  gap: 28px 40px;
  align-items: stretch;
}
.teaser-titles { display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.teaser-titles a {
  color: #9a9a9a;
  font-size: 22px;
  line-height: 1.28;
  font-weight: 400;
  padding: 8px 0;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.teaser-titles a.is-active {
  color: var(--ink);
  font-weight: 700;
}
@media (hover: hover) and (pointer: fine) {
  .teaser-titles a:hover {
    color: var(--ink);
    font-weight: 700;
    text-decoration: none;
  }
}
.teaser-photo {
  display: block;
  background: #ddd;
  min-height: 280px;
}
.teaser-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}
.teaser-photo:hover { text-decoration: none; }

/* Cards */
.grid-6, .grid-3, .grid-2, .media-grid, .partners-grid {
  display: grid;
  gap: 20px;
}
.grid-6 { grid-template-columns: repeat(3, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  border: 1px solid var(--line);
  background: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  color: inherit;
}
.card:hover { text-decoration: none; border-color: #c9c9c9; }
.card img { aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.card-body { padding: 14px 16px 18px; }
.card-meta { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.card h3 { font-size: 17px; margin: 0 0 8px; line-height: 1.3; font-weight: 650; }
.card p { margin: 0; color: #555; font-size: 14px; }
.dir-card {
  background: var(--soft);
  padding: 22px;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: inherit;
  border: 1px solid transparent;
}
.dir-card:hover { text-decoration: none; border-color: var(--blue); }
.dir-card h3 { margin: 0 0 8px; font-size: 18px; }
.dir-card span { font-size: 13px; color: var(--muted); }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px; }
.filters button {
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px 12px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}
.filters button.is-on { background: var(--blue); color: #fff; border-color: var(--blue); }

/* Article */
.article { max-width: 780px; }
.article .meta { color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.article .hero {
  margin: 0 0 24px;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.biblio {
  background: var(--soft);
  padding: 16px 18px;
  margin: 0 0 24px;
  font-size: 14px;
}
.biblio dt { color: var(--muted); font-size: 12px; margin-top: 8px; }
.biblio dt:first-child { margin-top: 0; }
.biblio dd { margin: 2px 0 0; }
.crumbs { font-size: 13px; color: var(--muted); margin: 0 0 18px; }
.crumbs a { color: var(--muted); }

.prose p { margin: 0 0 14px; }
.prose ul { margin: 0 0 14px; padding-left: 18px; }

/* Partners HTML grid (customer-editable later) */
.partners-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.partner-cell {
  border: 1px solid var(--line);
  min-height: 140px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  text-align: center;
  background: #fff;
}
.partner-mark {
  width: 72px;
  height: 48px;
  background: var(--soft);
  border: 1px dashed #cfcfcf;
  display: grid;
  place-items: center;
  font-size: 11px;
  color: #888;
  letter-spacing: .06em;
}
.partner-cell strong { font-size: 15px; }

/* Media */
.media-grid { grid-template-columns: repeat(3, 1fr); }
.media-item { color: inherit; }
.media-item:hover { text-decoration: none; }
.media-item img { aspect-ratio: 1; object-fit: cover; width: 100%; }
.media-item figcaption { padding: 10px 0 0; font-size: 14px; }
.video-frame {
  aspect-ratio: 16/9;
  background: #111;
  color: #fff;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}
.video-frame span { opacity: .8; font-size: 14px; text-align: center; padding: 20px; }

/* Members / research lists */
.list-links { display: grid; gap: 10px; }
.list-links a {
  border: 1px solid var(--line);
  padding: 14px 16px;
  color: inherit;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.list-links a:hover { text-decoration: none; border-color: var(--blue); }

.maps { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.maps iframe { width: 100%; height: 280px; border: 0; }
.contacts-list { font-size: 16px; }
.contacts-list p { margin: 0 0 10px; }
.muted-link { color: var(--muted); pointer-events: none; }

@media (max-width: 900px) {
  .header-top { flex-direction: column; align-items: flex-start; }
  .brand img { height: 42px; max-width: 100%; }
  .consortium { justify-content: flex-start; }
  .teaser { grid-template-columns: 1fr; }
  .teaser-photo { order: -1; }
  .grid-6, .grid-3, .grid-2, .media-grid, .partners-grid, .maps, .footer-grid {
    grid-template-columns: 1fr;
  }
  .menu-toggle { display: inline-block; }
  .main-nav {
    display: none;
    flex-direction: column;
    flex-wrap: wrap;
    width: 100%;
    border-top: 1px solid var(--line);
    overflow: visible;
  }
  .main-nav > li > a { white-space: normal; }
  .main-nav.is-open { display: flex; }
  .main-nav .sub { position: static; box-shadow: none; border: 0; display: block; padding: 0 0 8px 12px; }
  h1 { font-size: 28px; }
  .teaser-titles a { font-size: 18px; }
}