* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Open Sans', Helvetica, sans-serif;
  font-size: 15px;
  color: #333;
  background: #fff;
}

a { color: #4d8eb7; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Header ── */
header {
  background: linear-gradient(180deg, #000 0%, #4d8eb7 100%);
  padding: 20px 40px 18px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.header-tagline {
  text-align: center;
  color: rgba(255,255,255,0.78);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.30em;
  text-transform: uppercase;
  padding-top: 14px;
  margin-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.site-title { color: #fff; }
.site-title h1 { font-size: 22px; font-weight: bold; margin-bottom: 4px; }
.site-title p  { font-size: 11px; color: #eee; line-height: 1.6; }
.site-title a  { color: #fff; }

nav ul {
  list-style: none;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

nav ul li a {
  color: #fff;
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 3px;
  transition: background .15s;
}

nav ul li a:hover,
nav ul li a.active {
  background: rgba(255,255,255,.18);
  text-decoration: none;
  font-weight: bold;
}

/* ── Main layout ── */
main {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}


.project-box {
  background: #e7f5fd;
  border: 1px solid #c5dff0;
  border-radius: 8px;
  padding: 18px 24px;
  text-align: center;
  margin-bottom: 36px;
}

.project-box p {
  color: #777;
  font-size: 17px;
  line-height: 1.7;
}

.project-box .label {
  font-weight: bold;
  margin-bottom: 6px;
}

/* ── Section heading ── */
h2.section-heading {
  font-size: 17px;
  font-weight: bold;
  color: #4d8eb7;
  text-align: center;
  margin-bottom: 20px;
}

/* ── News items ── */
.news-list { list-style: none; }

.news-item {
  border-left: 3px solid #4d8eb7;
  padding: 10px 16px;
  margin-bottom: 18px;
  background: #fafafa;
  border-radius: 0 4px 4px 0;
}

.news-item .news-date {
  font-size: 12px;
  font-weight: bold;
  color: #888;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 5px;
}

.news-item p { line-height: 1.6; font-size: 14px; }
.news-item ul { margin-left: 20px; margin-top: 6px; }
.news-item ul li { line-height: 1.6; font-size: 14px; margin-bottom: 4px; }

.news-year {
  font-size: 15px;
  font-weight: bold;
  color: #555;
  text-align: center;
  margin: 32px 0 16px;
  border-bottom: 1px solid #ddd;
  padding-bottom: 8px;
}

/* ── "See all news" link ── */
.more-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  color: #4d8eb7;
}

/* ── People grid ── */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 16px;
}

.person-card {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 16px;
  text-align: center;
}

.person-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 10px;
}

.person-card h3 { font-size: 14px; font-weight: bold; margin-bottom: 4px; }
.person-card p  { font-size: 12px; color: #777; }

/* ── Publications list ── */
.pub-list { list-style: none; }
.pub-list li {
  padding: 10px 0;
  border-bottom: 1px solid #eee;
  line-height: 1.6;
  font-size: 14px;
}

/* ── Projects ── */
.project-card {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 20px;
}

.project-card h3 {
  font-size: 16px;
  font-weight: bold;
  color: #4d8eb7;
  margin-bottom: 8px;
}

.project-card p { line-height: 1.6; font-size: 14px; }

/* ── Footer ── */
footer {
  border-top: 1px solid #ccc;
  padding: 20px 40px;
  font-size: 12px;
  color: #999;
  text-align: center;
}

/* ── Dropdown nav ── */
nav ul li { position: relative; }

nav ul li .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #2a6a96;
  min-width: 160px;
  border-radius: 0 4px 4px 4px;
  z-index: 100;
  padding: 4px 0;
}

nav ul li:hover .dropdown-menu { display: block; }

.dropdown-menu li a {
  display: block;
  padding: 8px 16px;
  white-space: nowrap;
  border-radius: 0 !important;
}

.dropdown-menu li a:hover { background: rgba(255,255,255,.15); }

/* ── Publication stats bar ── */
.pub-stats-bar {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.pub-stat {
  text-align: center;
  background: #e7f5fd;
  border: 1px solid #c5dff0;
  border-radius: 8px;
  padding: 14px 24px;
  min-width: 130px;
}

.pub-stat .stat-number {
  display: block;
  font-size: 28px;
  font-weight: bold;
  color: #4d8eb7;
  line-height: 1.1;
  margin-bottom: 4px;
}

.pub-stat .stat-label {
  font-size: 11px;
  color: #777;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pub-stat-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #4d8eb7;
  color: #fff !important;
  border-radius: 8px;
  padding: 14px 24px;
  min-width: 130px;
  font-size: 13px;
  font-weight: bold;
  text-decoration: none !important;
}

.pub-stat-link:hover { background: #2a6a96; }

/* ── Tabs ── */
.tab-bar {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid #4d8eb7;
  margin-bottom: 24px;
}

.tab-btn {
  padding: 8px 20px;
  background: none;
  border: 1px solid #c0d8ea;
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  font-size: 14px;
  font-family: 'Open Sans', Helvetica, sans-serif;
  cursor: pointer;
  color: #555;
  transition: background .15s;
}

.tab-btn.active {
  background: #4d8eb7;
  color: #fff;
  border-color: #4d8eb7;
  font-weight: bold;
}

.tab-btn:hover:not(.active) { background: #e7f5fd; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Loading spinner ── */
.loading {
  text-align: center;
  padding: 40px;
  color: #888;
  font-size: 14px;
}

/* ── Publication entry ── */
.pub-entry {
  padding: 12px 0;
  border-bottom: 1px solid #eee;
  line-height: 1.6;
  font-size: 14px;
}

.pub-entry .pub-title { font-weight: bold; margin-bottom: 3px; }
.pub-entry .pub-authors { color: #555; margin-bottom: 3px; font-size: 13px; }
.pub-entry .pub-journal { font-style: italic; color: #777; font-size: 13px; }
.pub-entry .pub-links { margin-top: 5px; }
.pub-entry .pub-links a {
  display: inline-block;
  margin-right: 8px;
  font-size: 12px;
  background: #e7f5fd;
  padding: 2px 8px;
  border-radius: 3px;
  color: #4d8eb7;
}
.pub-entry .pub-links a:hover { background: #4d8eb7; color: #fff; text-decoration: none; }

.pub-year-heading {
  font-size: 16px;
  font-weight: bold;
  color: #4d8eb7;
  margin: 28px 0 8px;
  border-bottom: 1px solid #c0d8ea;
  padding-bottom: 4px;
}

/* ── People grid ── */
.members-section h3 {
  font-size: 16px;
  font-weight: bold;
  color: #4d8eb7;
  margin: 28px 0 16px;
  border-bottom: 1px solid #c0d8ea;
  padding-bottom: 6px;
}

/* ── Mobile ── */
@media (max-width: 650px) {
  header { padding: 16px 20px 14px; }
  .header-top { flex-direction: column; align-items: flex-start; }
  nav ul { gap: 4px; }
  main { padding: 20px 16px 40px; }
}