:root {
  --color-primary: #2563eb;    /* Blue */
  --color-secondary: #059669;  /* Green */
  --color-accent: #dc2626;     /* Red */
  --color-dark: #1f2937;
  --color-light: #f9fafb;
  --color-text: #374151;
  --color-muted: #6b7280;
  --color-bg: #ffffff;
  --color-border: #e5e7eb;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

main {
  min-height: 70vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background-color: #1d4ed8;
  color: white;
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: white;
  border: 1px solid var(--color-secondary);
}

.btn-secondary:hover {
  background-color: #047857;
  color: white;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-dark);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  background-color: var(--color-light);
  border-color: var(--color-muted);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  padding: 0.75rem 0;
}

.btn-ghost:hover {
  color: var(--color-dark);
  background-color: transparent;
}

/* Header & Navigation */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark);
}

.site-logo:hover {
  color: var(--color-primary);
}

.logo-icon {
  height: 40px;
  width: auto;
  display: block;
}


.site-nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-lg);
}

.site-nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 1rem;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-primary);
}

/* Home Page */
.centre-hero {
  padding: 5rem 0 1.25rem 0;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.05), transparent 24%),
    linear-gradient(180deg, #f8fbfd 0%, #ffffff 100%);
}

.centre-hero-shell {
  max-width: 1320px;
  margin: 0 auto;
}

.centre-hero-main {
  display: block;
}

.centre-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--color-secondary);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.centre-title {
  font-size: clamp(3.25rem, 6vw, 6.5rem);
  line-height: 0.98;
  max-width: 24ch;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
  text-wrap: unset;
}

.centre-acronym {
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.centre-summary {
  font-size: 1.2rem;
  max-width: 68ch;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.centre-affiliation {
  margin-bottom: 1.5rem;
  color: var(--color-muted);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.hero-fact {
  padding-right: 1rem;
}

.hero-fact-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.hero-fact-text {
  color: var(--color-text);
}

.centre-section {
  padding: 2rem 0 3.5rem 0;
}

.centre-section-alt {
  background-color: #f8fafb;
  border-top: 1px solid #edf1f3;
  border-bottom: 1px solid #edf1f3;
}

.prose-block {
  max-width: 900px;
}

.prose-block h2,
.info-panel h2,
.centre-section > .container > h2 {
  font-size: 2rem;
  margin-bottom: 1.25rem;
}

.prose-block p,
.editorial-item p,
.info-panel p {
  margin-bottom: 1rem;
}

.two-column-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.info-panel {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.plain-list,
.link-list,
.project-list {
  padding-left: 1.25rem;
}

.plain-list li,
.link-list li,
.project-list li {
  margin-bottom: 0.75rem;
}

.editorial-sections {
  display: grid;
  gap: 2rem;
}

.editorial-item {
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--color-border);
}

.editorial-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.editorial-item h3 {
  font-size: 1.35rem;
  margin-bottom: 0.85rem;
}

.project-list {
  columns: 2;
  column-gap: 2rem;
}

.section-intro {
  margin-bottom: 1rem;
  color: var(--color-muted);
}

.name-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.name-chip {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  background-color: #fbfcfc;
}

.people-directory {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.directory-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  background-color: #fbfcfc;
}

.directory-name {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.directory-role {
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.directory-meta {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.former-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.former-link {
  font-size: 0.95rem;
}

/* Sections */
.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-tag {
  display: inline-block;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.section-desc {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
}

.section-cta {
  text-align: center;
  margin-top: var(--spacing-xl);
}

/* Grid Layouts */
.research-grid,
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* Cards */
.research-card,
.team-card,
.news-item {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.research-card:hover,
.team-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.research-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.research-title,
.team-name,
.news-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.research-excerpt,
.team-bio,
.news-excerpt {
  color: var(--color-muted);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.research-link,
.team-link,
.read-more {
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  margin-top: auto;
}

/* Team Specific */
.team-photo {
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1 / 1;
}

.team-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-photo-placeholder {
  width: 100%;
  height: 100%;
  background-color: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--color-muted);
  font-family: var(--font-serif);
}

.team-role {
  color: var(--color-secondary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
}

/* News Specific */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.news-item {
  flex-direction: row;
  gap: var(--spacing-lg);
  align-items: center;
}

.news-date {
  color: var(--color-muted);
  font-size: 0.875rem;
  white-space: nowrap;
  min-width: 120px;
}

.news-content {
  flex-grow: 1;
}

.news-title a {
  color: var(--color-dark);
}

.news-title a:hover {
  color: var(--color-primary);
}

/* Stats Section */
.section-stats {
  background-color: var(--color-dark);
  color: white;
  padding: var(--spacing-xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 4rem;
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--spacing-sm);
  color: var(--color-secondary);
}

.stat-label {
  font-size: 1.125rem;
  font-weight: 500;
  opacity: 0.8;
}

/* CTA Section */
.section-cta {
  background-color: var(--color-light);
}

.cta-box {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2rem;
}

.cta-text {
  font-size: 1.125rem;
  color: var(--color-muted);
  margin-bottom: var(--spacing-lg);
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  align-items: center;
}

/* Footer */
.site-footer {
  background-color: var(--color-dark);
  color: white;
  padding: var(--spacing-xl) 0 0 0;
  margin-top: var(--spacing-xl);
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-title {
  color: white;
  margin-bottom: var(--spacing-xs);
}

.footer-desc {
  color: var(--color-muted);
  margin-bottom: var(--spacing-md);
}

.footer-address {
  font-style: normal;
  color: #9ca3af;
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  color: white;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a,
.footer-contact a {
  color: #9ca3af;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: white;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding: var(--spacing-md) 0;
  text-align: center;
  color: #9ca3af;
  font-size: 0.875rem;
}

/* Pages */
.page-content {
  padding: var(--spacing-xl) var(--spacing-md);
}

.page-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

/* Publication List */
.publication-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.publication-item {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-lg);
}

.publication-item:last-child {
  border-bottom: none;
}

.publication-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-sans);
}

.publication-authors {
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.publication-venue {
  color: var(--color-muted);
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.publication-doi {
  font-size: 0.875rem;
  display: inline-block;
  background-color: var(--color-light);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

/* Post Content Layout */
.post-content,
.person-profile,
.research-detail {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.post-header,
.person-header,
.research-header {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.post-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.post-meta {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.post-author {
  margin-left: var(--spacing-sm);
}

.content-block {
  font-size: 1.125rem;
  line-height: 1.8;
}

.content-block p {
  margin-bottom: var(--spacing-md);
}

.content-block h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

/* Person Profile Specific */
.person-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.person-photo-large {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.person-photo-placeholder {
  font-size: 5rem;
  color: var(--color-muted);
  font-family: var(--font-serif);
}

.person-photo-large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-name {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
}

.person-position {
  font-size: 1.25rem;
  color: var(--color-muted);
  margin-bottom: var(--spacing-sm);
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  background-color: var(--color-light);
  color: var(--color-dark);
}

.badge-pi {
  background-color: var(--color-primary);
  color: white;
}

.badge-researcher {
  background-color: var(--color-secondary);
  color: white;
}

.person-email {
  display: block;
  margin-top: var(--spacing-sm);
}

.person-orcid {
  margin-top: var(--spacing-sm);
}

.person-link {
  margin-top: var(--spacing-sm);
}

.person-program {
  margin-top: var(--spacing-sm);
  color: var(--color-muted);
}

/* Research Detail Specific */
.research-icon-large {
  font-size: 5rem;
  margin-bottom: var(--spacing-md);
}

.research-subtitle {
  font-size: 1.5rem;
  color: var(--color-muted);
  margin-bottom: var(--spacing-md);
}

.research-meta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.team-list-inline {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.team-list-inline li {
  background-color: var(--color-light);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .header-container {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .site-nav ul {
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .centre-hero {
    padding-top: 3rem;
  }

  .hero-facts,
  .two-column-grid {
    grid-template-columns: 1fr;
  }

  .project-list {
    columns: 1;
  }
}