:root {
  --color-bg: #f7f8fa;
  --color-panel: #ffffff;
  --color-text: #1f2a37;
  --color-muted: #4b5563;
  --color-border: #d8dee6;
  --color-accent: #1f4b7a;
  --color-accent-soft: #e9f0f7;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --radius-sm: 0.4rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 2px 8px rgba(12, 28, 46, 0.07);
  --shadow-md: 0 8px 22px rgba(12, 28, 46, 0.1);
  --motion-fast: 140ms;
  --motion-mid: 260ms;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--color-text);
  background:
    radial-gradient(1400px 360px at 0% -8%, #eff4f9 0, transparent 64%),
    linear-gradient(180deg, #fbfcfe 0, var(--color-bg) 100%);
  line-height: 1.6;
}

h1,
h2,
h3,
h4 {
  font-family: "Lora", Georgia, serif;
  line-height: 1.2;
  margin-top: 0;
  letter-spacing: 0.01em;
}

a {
  color: var(--color-accent);
  text-underline-offset: 2px;
}

a:hover,
a:focus-visible {
  text-decoration-thickness: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
}

.skip-link:focus {
  left: var(--space-3);
  top: var(--space-3);
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
  z-index: 1000;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.container-narrow {
  width: min(760px, 92vw);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(216, 222, 230, 0.9);
  background: rgba(251, 252, 254, 0.94);
  backdrop-filter: blur(6px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
}

.brand {
  color: var(--color-text);
  text-decoration: none;
  font-family: "Lora", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 600;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
}

.site-nav a[aria-current="page"] {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 1.2rem;
  height: 2px;
  background: var(--color-text);
  margin: 3px 0;
}

.site-main {
  padding-bottom: var(--space-6);
}

.hero {
  padding: var(--space-6) 0 var(--space-5);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  max-width: 18ch;
}

.hero-lead {
  max-width: 70ch;
  color: var(--color-muted);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.section {
  padding: var(--space-5) 0;
}

.section-tight {
  margin-top: var(--space-5);
}

.section-header {
  margin-bottom: var(--space-4);
}

.section-header p {
  color: var(--color-muted);
  max-width: 68ch;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 0.77rem;
  color: #395978;
  margin-bottom: var(--space-2);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  transition: transform var(--motion-mid) ease, box-shadow var(--motion-mid) ease, border-color var(--motion-mid) ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-link {
  display: block;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
}

.list-compact {
  list-style: none;
  margin: 0;
  padding: 0;
}

.list-compact li {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) 0;
}

.list-compact li:last-child {
  border-bottom: 0;
}

.list-compact span {
  display: block;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.content > * + * {
  margin-top: var(--space-3);
}

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

.lead {
  font-size: 1.1rem;
}

.button {
  display: inline-block;
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.95rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.button-primary {
  background: var(--color-accent);
  color: #fff;
}

.button-subtle {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-color: #c7d8ea;
}

.button:focus-visible,
a:focus-visible,
select:focus-visible {
  outline: 3px solid #1d6ac6;
  outline-offset: 2px;
}

.member-map {
  width: 100%;
  min-height: 430px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-top: var(--space-3);
}

.member-card.is-active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  background: #f8fbff;
}

.repo-controls {
  display: flex;
  gap: var(--space-3);
  align-items: end;
  flex-wrap: wrap;
}

.repo-controls label {
  font-weight: 600;
}

.repo-controls select {
  min-width: 12rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.45rem;
  font-family: inherit;
}

.funders-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.8rem;
  margin-top: var(--space-2);
}

.funders-row img,
.funder-logo {
  display: block;
  height: 60px;
  max-height: 65px;
  width: auto;
  max-width: none;
  object-fit: contain;
  flex: 0 0 auto;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  padding: var(--space-5) 0;
  background: rgba(255, 255, 255, 0.7);
}

.sr-only {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

.section-reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--motion-mid) ease, transform var(--motion-mid) ease;
}

.section-reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 920px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 1rem;
    background: var(--color-panel);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-2);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: var(--space-2);
    min-width: 11rem;
  }
}

@media (max-width: 720px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .member-map {
    min-height: 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }

  .section-reveal {
    opacity: 1;
    transform: none;
  }
}

/* ── Tables ── */
.content table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
  margin: var(--space-4) 0;
}

.content table th,
.content table td {
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  text-align: left;
  vertical-align: top;
}

.content table th {
  background: var(--color-accent-soft);
  font-weight: 600;
  white-space: nowrap;
}

.content table tr:nth-child(even) {
  background: #f3f6fa;
}

/* Allow wide tables to scroll horizontally rather than overflow */
.content {
  overflow-x: auto;
}

/* ── Publications ── */
.pub-list {
  margin-top: var(--space-3);
}

.pub-item {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

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

.pub-year {
  font-weight: normal;
  color: var(--color-muted);
  font-size: 0.9em;
}

.pub-title {
  margin: var(--space-1) 0;
  font-weight: 600;
  line-height: 1.4;
}

.pub-doi {
  font-size: 0.85em;
  color: var(--color-muted);
}

details.pub-more {
  margin-top: var(--space-4);
}

details.pub-more > summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  cursor: pointer;
  list-style: none;
  padding: var(--space-2) var(--space-4);
  border: 1.5px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  user-select: none;
  transition: background var(--motion-fast), color var(--motion-fast);
}

details.pub-more > summary::-webkit-details-marker {
  display: none;
}

details.pub-more > summary::after {
  content: " ↓";
}

details.pub-more[open] > summary::after {
  content: " ↑";
}

details.pub-more > summary:hover,
details.pub-more > summary:focus-visible {
  background: var(--color-accent-soft);
}