/* ============================================
   THE ROAD LAB — Stylesheet
   Research on Adult Development
   ============================================ */

/* --- Design Tokens --- */
:root {
  --cream:        #F5F0E8;
  --cream-dark:   #EDE8DC;
  --cream-mid:    #E0D9CC;
  --brown-deep:   #3D2B1A;
  --brown-dark:   #5C4A2A;
  --brown-mid:    #8B7355;
  --brown-light:  #B8A48C;
  --amber:        #C4933F;
  --amber-light:  #E0AA5C;
  --amber-pale:   #F5E4C0;
  --text-primary: #2C2010;
  --text-secondary: #5C4A2A;
  --text-muted:   #8B7355;
  --white:        #FFFEF8;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Lora', Georgia, serif;
  --font-ui:      'Nunito Sans', -apple-system, system-ui, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  --max-width: 1200px;
  --nav-height: 72px;

  --shadow-sm: 0 1px 4px rgba(60, 40, 20, 0.07);
  --shadow-md: 0 4px 18px rgba(60, 40, 20, 0.10);
  --shadow-lg: 0 8px 36px rgba(60, 40, 20, 0.13);

  --transition: 0.25s ease;
  --transition-slow: 0.45s ease;
  --radius: 6px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--cream);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Accessibility: Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--brown-deep);
  color: var(--cream);
  padding: 0.5rem 1.1rem;
  z-index: 9999;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: top var(--transition);
}
.skip-link:focus { top: 0; }

/* --- Focus Styles --- */
:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --- Typography --- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  color: var(--brown-deep);
}
h4, h5, h6 {
  font-family: var(--font-ui);
  font-weight: 700;
  line-height: 1.3;
  color: var(--brown-dark);
}
h1 { font-size: clamp(2.6rem, 5.5vw, 4.2rem); }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase; }

p { max-width: 68ch; color: var(--text-primary); font-size: 1.05rem; }
.lead { font-size: 1.18rem; line-height: 1.65; color: var(--brown-dark); }
em, i { font-style: italic; }
strong { font-weight: 600; }

/* --- Layout Utilities --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.section { padding: var(--space-2xl) 0; }
.section-alt { background-color: var(--cream-dark); }

/* --- Navigation --- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(245, 240, 232, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cream-mid);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
}
.nav-brand .lab-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--brown-deep);
  letter-spacing: 0.01em;
  line-height: 1;
}
.nav-brand .lab-sub {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: var(--amber);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 800;
  line-height: 1;
}
.nav-links {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}
.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--brown-dark);
  letter-spacing: 0.03em;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.nav-links a:hover,
.nav-links a[aria-current="page"],
.nav-links a.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
  border-radius: var(--radius);
  touch-action: manipulation;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--brown-deep);
  transition: transform var(--transition), opacity var(--transition);
  border-radius: 2px;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Hero (Home) --- */
.hero {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, var(--cream) 0%, var(--amber-pale) 55%, var(--cream-dark) 100%);
  position: relative;
  overflow: hidden;
  min-height: 60vh;
  display: flex;
  align-items: center;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(196, 147, 63, 0.14) 0%, transparent 58%);
  pointer-events: none;
}
/* Subtle grain texture */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.025'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
}
.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  position: relative;
  z-index: 1;
}
.hero h1 {
  margin-bottom: var(--space-md);
  font-weight: 700;
  color: var(--brown-deep);
  font-size: clamp(3rem, 8vw, 5.5rem);
}
.hero h1 .accent { color: var(--amber); }
.hero-tagline {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--brown-dark);
  margin-bottom: var(--space-lg);
  font-style: italic;
  max-width: 60ch;
}
.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual svg {
  width: 100%;
  max-width: 460px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.78rem 1.75rem;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  border-radius: var(--radius);
  line-height: 1;
  touch-action: manipulation;
}
.btn-primary {
  background: var(--brown-deep);
  color: var(--cream);
  border-color: var(--brown-deep);
}
.btn-primary:hover {
  background: var(--amber);
  color: var(--brown-deep);
  border-color: var(--amber);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: transparent;
  color: var(--brown-deep);
  border-color: var(--brown-mid);
}
.btn-secondary:hover {
  border-color: var(--amber);
  color: var(--amber);
}
.btn-light {
  background: var(--amber);
  color: var(--brown-deep);
  border-color: var(--amber);
}
.btn-light:hover {
  background: var(--amber-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* --- Eyebrow / Label --- */
.eyebrow {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.eyebrow::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--amber);
  flex-shrink: 0;
}

/* --- Section Headers --- */
.section-header { margin-bottom: var(--space-xl); }
.section-header h2 { margin-bottom: var(--space-sm); }
.section-header p { color: var(--brown-dark); font-size: 1.1rem; }

/* --- Page Hero (inner pages) --- */
.page-hero {
  background: linear-gradient(135deg, var(--brown-deep) 0%, var(--brown-dark) 100%);
  padding: var(--space-xl) 0 calc(var(--space-xl) * 1.1);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 40%, rgba(196, 147, 63, 0.2) 0%, transparent 55%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: var(--cream); margin-bottom: var(--space-sm); max-width: 900px; margin-left: auto; margin-right: auto; }
.page-hero p.lead { color: rgba(245, 240, 232, 0.75); max-width: 56ch; }


/* --- Research Detail Sections --- */
.research-area {
  scroll-margin-top: calc(var(--nav-height) + 2rem);
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--cream-mid);
}
.research-area:last-of-type { border-bottom: none; }
.research-area-inner {
  max-width: 900px;
  margin: 0 auto;
}
.research-area-inner h2 {
  margin-bottom: var(--space-sm);
}
.research-area-inner > p {
  margin-bottom: var(--space-sm);
  max-width: none;
}

/* --- People Grid --- */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-md);
}
.person-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.person-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.person-photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--cream-dark), var(--cream-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 600;
  color: var(--brown-light);
}
.person-photo img { width: 100%; height: 100%; object-fit: cover; }
.person-info { padding: var(--space-md); }
.person-info h3 { font-size: 1.1rem; margin-bottom: 0.2rem; }
.person-role {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.6rem;
}
.person-info p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.55; max-width: none; }
.person-links { display: flex; gap: 0.75rem; margin-top: 0.75rem; flex-wrap: wrap; }
.person-links a {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--brown-mid);
  transition: color var(--transition);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: transparent;
  transition: color var(--transition), text-decoration-color var(--transition);
}
.person-links a:hover {
  color: var(--amber);
  text-decoration-color: var(--amber);
}


/* --- Publications --- */
.pub-year-group,
.pub-section { margin-bottom: var(--space-xl); }

.pub-year-group:last-child,
.pub-section:last-child { margin-bottom: 0; }

.pub-year-heading,
.pub-section-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--amber);
  margin-bottom: var(--space-xs);
  line-height: 1;
}
.pub-section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--cream-mid);
}
.pub-section-count {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.pub-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.pub-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  border-left: 4px solid var(--cream-mid);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition);
}
.pub-item:hover { border-left-color: var(--amber); }
.pub-status {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}
.pub-title {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--brown-deep);
  margin-bottom: 0.25rem;
  line-height: 1.45;
  max-width: none;
}
.pub-authors {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.2rem;
  max-width: none;
}
.pub-journal {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--brown-mid);
  max-width: none;
}

/* --- Join Page --- */
.opportunity-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border-bottom: 4px solid var(--amber);
}
.opportunity-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.opportunity-card p { font-size: 0.95rem; color: var(--text-secondary); max-width: none; }

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
  align-items: start;
}
.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.contact-detail .label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
}
.contact-detail a,
.contact-detail p {
  font-size: 1rem;
  color: var(--text-primary);
  max-width: none;
  transition: color var(--transition);
}
.contact-detail a:hover { color: var(--amber); }

/* --- Forms --- */
.form-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}
.form-group label {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--brown-dark);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--cream);
  border: 2px solid var(--cream-mid);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-primary);
  transition: border-color var(--transition), background var(--transition);
  width: 100%;
}
.form-group input:focus-visible,
.form-group textarea:focus-visible,
.form-group select:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 0;
  border-color: var(--amber);
  background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 130px; }

/* --- Horizontal Rule / Divider --- */
hr.section-rule {
  border: none;
  border-top: 1px solid var(--cream-mid);
  margin: var(--space-xl) 0;
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--brown-deep) 0%, var(--brown-dark) 100%);
  padding: var(--space-xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(196, 147, 63, 0.18) 0%, transparent 58%);
  pointer-events: none;
}
.cta-banner .container { position: relative; z-index: 1; }
.cta-banner h2 { color: var(--cream); margin-bottom: var(--space-sm); }
.cta-banner p { color: rgba(245, 240, 232, 0.75); font-size: 1.1rem; max-width: 52ch; margin: 0 auto var(--space-lg); }

/* --- Footer --- */
.site-footer {
  background: var(--brown-deep);
  padding: var(--space-xl) 0 var(--space-md);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(245, 240, 232, 0.1);
  margin-bottom: var(--space-md);
}
.footer-brand .f-lab-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.2rem;
}
.footer-brand .f-lab-sub {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-sm);
  font-weight: 800;
}
.footer-brand p { font-size: 0.9rem; line-height: 1.65; color: rgba(245, 240, 232, 0.55); max-width: 36ch; }
.footer-col h4 {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-sm);
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col a {
  font-size: 0.875rem;
  color: rgba(245, 240, 232, 0.6);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--amber); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.footer-bottom p { font-family: var(--font-ui); font-size: 0.78rem; color: rgba(245, 240, 232, 0.35); max-width: none; }

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up[style*="transition-delay"] { /* delays handled inline */ }

/* --- Responsive --- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .research-grid { grid-template-columns: 1fr; }
  .pi-card { grid-template-columns: 1fr; }
  .pi-card .person-photo { aspect-ratio: 3/2; font-size: 4rem; }
  .opportunity-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stat-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 2.5rem;
    --space-2xl: 3.5rem;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--cream);
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--cream-mid);
    box-shadow: var(--shadow-md);
    gap: var(--space-sm);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .stat-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .people-grid { grid-template-columns: 1fr; }
}

/* --- Visually Hidden (screen-reader only) --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Contact Info Block extras --- */
.info-item { margin-bottom: var(--space-md); }
.info-label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.2rem;
  max-width: none;
}
.info-item p, .info-item a {
  font-size: 1rem;
  color: var(--text-primary);
  max-width: none;
}
.info-item a:hover { color: var(--amber); }
.profile-links { display: flex; flex-direction: column; gap: 0.4rem; list-style: none; }
.profile-links a {
  font-size: 0.95rem;
  color: var(--brown-mid);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition);
}
.profile-links a:hover { color: var(--amber); }


/* Page hero text helpers */
.page-title { color: var(--cream); }
.page-subtitle { color: rgba(245, 240, 232, 0.75); font-size: 1.1rem; margin-top: 0.5rem; max-width: 56ch; }


/* Contact form */
.contact-form .btn { width: 100%; justify-content: center; margin-top: 0.5rem; }

@media (max-width: 640px) {
  .pi-intro-inner { grid-template-columns: 1fr; }
  .pi-photo .person-photo { aspect-ratio: 3/2; }
}

/* ============================================
   SECTION SPACING — pages with no explicit padding
   ============================================ */
.pi-section,
.members-section,
.contact-section,
.opportunities,
.framework,
.publications {
  padding: var(--space-2xl) 0;
}

.join-cta {
  padding: var(--space-2xl) 0;
  background: var(--cream-dark);
  text-align: center;
}
.join-cta h2 { margin-bottom: var(--space-sm); }
.join-cta p {
  max-width: 52ch;
  margin: 0 auto var(--space-lg);
  color: var(--brown-dark);
}

/* ============================================
   SECTION TITLE — shared heading style
   ============================================ */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  color: var(--brown-deep);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--cream-mid);
}

/* ============================================
   PI CARD — new two-part structure
   ============================================ */
.pi-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  margin-bottom: 0;
}
.pi-card-top {
  display: grid;
  grid-template-columns: 200px 1fr;
  align-items: start;
}
.pi-photo .person-photo {
  height: 100%;
  min-height: 280px;
  aspect-ratio: unset;
  font-size: 4rem;
  border-radius: 0;
}
.pi-details {
  padding: var(--space-lg);
}
.pi-details h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  margin-bottom: 0.3rem;
}
.pi-role {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.05em;
  margin-bottom: 0.15rem;
  max-width: none;
}
.pi-affiliation {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  max-width: none;
}
.pi-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.pi-links a {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--brown-mid);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: transparent;
  transition: color var(--transition), text-decoration-color var(--transition);
}
.pi-links a:hover {
  color: var(--amber);
  text-decoration-color: var(--amber);
}
.pi-card-bio {
  padding: var(--space-lg) var(--space-xl) var(--space-xl);
  border-top: 1px solid var(--cream-mid);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.pi-card-bio p { max-width: 78ch; }
.pi-card-bio a { color: var(--amber); }
.pi-card-bio a:hover { text-decoration: underline; }

/* ============================================
   MEMBER GROUPS & CARDS
   ============================================ */
.member-group {
  margin-bottom: var(--space-xl);
}
.member-group:last-child { margin-bottom: 0; }

.member-group-title {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-md);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--cream-mid);
}

/* Full-width stacked rows */
.member-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.member-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-md);
  border-left: 3px solid var(--cream-mid);
  transition: border-left-color var(--transition);
}
.member-card:hover {
  border-left-color: var(--amber);
}
.member-card .person-photo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  aspect-ratio: 1;
  font-size: 1rem;
  flex-shrink: 0;
  min-height: unset;
  margin-bottom: 0;
}
.member-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.member-card h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--brown-deep);
  letter-spacing: normal;
  text-transform: none;
}
.member-role {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  max-width: none;
}
.member-focus {
  font-size: 0.88rem;
  color: var(--text-secondary);
  max-width: none;
}

/* Undergraduate prose — full width */
.member-group > p {
  max-width: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   OPPORTUNITY CARDS (Join page)
   ============================================ */
.opportunity-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.opp-commitment {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  max-width: none;
}

/* ============================================
   RESEARCH — FRAMEWORK SECTION
   ============================================ */
.framework-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 900px;
  margin: 0 auto;
}
.framework-content p {
  max-width: none;
}

.key-themes { margin-top: var(--space-lg); }
.key-themes-title {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 0.75rem;
}
.themes-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}
.themes-list li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding-left: 1rem;
  position: relative;
}
.themes-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--amber-light);
  font-size: 0.8rem;
}

/* ============================================
   RESPONSIVE ADDITIONS
   ============================================ */
@media (max-width: 960px) {
  .pi-card-top { grid-template-columns: 1fr; }
  .pi-photo .person-photo { min-height: auto; aspect-ratio: 3/2; }
  .pi-details { padding: var(--space-lg); }
  .pi-card-bio { padding: var(--space-lg); }
}

@media (max-width: 768px) {
  .opportunity-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .opportunity-cards { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .opportunity-cards { gap: var(--space-md); }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  .fade-up {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn {
    transition: none;
  }
  .btn:hover {
    transform: none;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}