/* =========================================================
   RAIL Lab – Robot Athletic Intelligence Lab
   Minimal academic style + Chalmers blue hero
   ========================================================= */

:root {
  --blue:    #432EB7;  /* Chalmers purple */
  --blue-dk: #2e1f8a;
  --text:    #1a1a1a;
  --muted:   #555;
  --border:  #e0e0e0;
  --bg-alt:  #f7f8fa;
  --white:   #ffffff;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── NAV ─────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 38px;
  width: auto;
  display: block;
  border-radius: 4px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.4rem;
}

nav ul a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s;
}
nav ul a:hover { color: var(--blue); text-decoration: none; }

/* ── HERO ────────────────────────────────────────── */
.hero {
  background: var(--blue);
  color: var(--white);
  padding: 6rem 2rem 4rem;
  margin-top: 56px;
}

/* Slideshow variant */
.hero-slideshow {
  position: relative;
  overflow: hidden;
  background: var(--blue-dk);
  min-height: 540px;
}

.slideshow {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
}
.slide.active { opacity: 1; }

.slide img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* Per-slide gradient overlay */
.slide::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to right,
    rgba(20, 10, 70, 0.72) 0%,
    rgba(20, 10, 70, 0.45) 55%,
    rgba(20, 10, 70, 0.15) 100%
  );
}

/* Text content inside each slide */
.slide-text {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  padding: 7rem 2rem 5rem;
}

.slide-text-inner {
  max-width: 640px;
  margin-left: calc((100% - 1100px) / 2);
  padding-left: 0;
}

@supports not (margin-left: calc((100% - 1100px) / 2)) {
  .slide-text-inner { margin-left: 2rem; }
}

/* Dot navigation — bottom centre of hero */
.slide-dots {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: row;
  gap: 0.6rem;
}

.dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.55);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.dot.active {
  background: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.9);
}
.dot:hover { border-color: #fff; }

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 4rem;
}

.hero-text { flex: 1; }

.hero-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.75;
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: 1rem;
  color: var(--white);
}

.hero-title {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.hero-tagline {
  font-style: italic;
  font-size: 0.9rem;
  opacity: 0.75;
  margin-bottom: 1.75rem;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-links a {
  display: inline-block;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.6);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s;
}
.hero-links a:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
  text-decoration: none;
}


/* ── STATS BAR ──────────────────────────────────── */
.stats-bar {
  background: var(--blue-dk);
  display: flex;
  justify-content: center;
  gap: 0;
}

.stat {
  padding: 1.25rem 3rem;
  text-align: center;
  color: var(--white);
  border-right: 1px solid rgba(255,255,255,0.15);
}
.stat:last-child { border-right: none; }

.stat-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  line-height: 1.2;
}
.stat-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-top: 0.1rem;
}

/* ── SECTIONS ───────────────────────────────────── */
.section { padding: 5rem 2rem; }
.section-alt { background: var(--bg-alt); }

.container {
  max-width: 1100px;
  margin: 0 auto;
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--blue);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--blue);
  display: inline-block;
}

.section p { color: var(--muted); max-width: 780px; margin-bottom: 1rem; }
.section-sub { font-size: 0.9rem; margin-bottom: 1.5rem; }

/* ── RESEARCH THEMES ────────────────────────────── */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.theme-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--blue);
  border-radius: 4px;
  padding: 1.75rem;
}

.theme-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.theme-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.theme-card p {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0;
}

/* ── PEOPLE ─────────────────────────────────────── */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.person-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
}

.person-lead {
  border-top: 3px solid var(--blue);
}

.person-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.person-role {
  font-size: 0.8rem;
  color: var(--blue);
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.person-email, .person-note {
  font-size: 0.8rem;
  color: var(--muted);
}

.people-note {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
  font-style: italic;
}

/* ── PUBLICATIONS ───────────────────────────────── */
.pub-list {
  list-style: none;
  margin-top: 1rem;
}

.pub-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pub-venue {
  background: var(--blue);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}

.pub-role {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--blue);
  font-weight: 500;
  white-space: nowrap;
}

.pub-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
}

/* ── GRANTS ─────────────────────────────────────── */
.grant-list { margin-top: 1.5rem; display: flex; flex-direction: column; gap: 1.25rem; }

.grant {
  background: var(--white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--blue);
  border-radius: 0 4px 4px 0;
  padding: 1.25rem 1.5rem;
}

.grant-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.grant-funder {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.grant-amount {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue);
}

.grant h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.grant p { font-size: 0.825rem; color: var(--muted); margin: 0; }

/* ── AWARDS ─────────────────────────────────────── */
.award-list {
  list-style: none;
  margin-top: 1.5rem;
}

.award-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  gap: 1rem;
  align-items: baseline;
}

.award-year {
  font-weight: 600;
  color: var(--blue);
  flex-shrink: 0;
  width: 2.5rem;
}

/* ── CONTACT ────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 1.5rem;
}

.contact-grid p { margin-bottom: 0.5rem; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.25rem;
}

.contact-links a {
  font-size: 0.9rem;
  font-weight: 500;
}

/* ── FOOTER ─────────────────────────────────────── */
footer {
  background: var(--text);
  color: rgba(255,255,255,0.5);
  padding: 2rem 2rem 1.75rem;
  font-size: 0.8rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-emblem {
  height: 52px;
  width: auto;
  opacity: 0.8;
}

.footer-text { text-align: left; }
.footer-text p { margin: 0; line-height: 1.6; }

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}

.footer-chalmers-logo {
  height: 28px;
  width: auto;
  mix-blend-mode: screen;
  opacity: 0.75;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-links a {
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: rgba(255,255,255,0.8); text-decoration: none; }

/* ── NAV ACTIVE ─────────────────────────────────── */
nav ul a.nav-active {
  color: var(--blue);
  font-weight: 600;
}

.nav-logo { text-decoration: none; }
.nav-logo:hover { text-decoration: none; }

.nav-chalmers {
  height: 26px;
  width: auto;
  display: block;
  opacity: 0.75;
  margin-left: 1.5rem;
  flex-shrink: 0;
}
.nav-chalmers:hover { opacity: 1; }

/* ── SECTION HEADER (with see-all link) ─────────── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0;
  gap: 1rem;
  flex-wrap: wrap;
}

.see-all {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue);
  white-space: nowrap;
}

/* ── PAGE HERO (inner pages) ────────────────────── */
.page-hero {
  background: var(--blue);
  color: var(--white);
  padding: 5rem 2rem 3.5rem;
  margin-top: 56px;
}

.page-hero-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.65;
  margin-bottom: 0.6rem;
}

.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.15;
}

.page-hero-sub {
  font-size: 0.975rem;
  opacity: 0.85;
  max-width: 680px;
  line-height: 1.7;
  color: var(--white) !important;
  margin-bottom: 0 !important;
}

/* ── RESEARCH PAGE ──────────────────────────────── */
.research-theme { max-width: 820px; }
.research-theme p { color: var(--muted); margin-bottom: 1rem; max-width: 100%; }

.theme-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.4rem;
}

.subheading {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}

.project-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
}

.project-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.project-card p {
  font-size: 0.825rem;
  color: var(--muted);
  margin: 0 !important;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--muted);
  background: var(--white);
}

.ext-link {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--blue);
}

/* ── PEOPLE PAGE ────────────────────────────────── */
.pi-card {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  margin-top: 2rem;
}

.pi-photo img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 3px solid var(--border);
}

.pi-bio { flex: 1; }

.pi-bio h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
  color: var(--text);
}

.pi-title {
  font-size: 0.875rem;
  color: var(--blue);
  font-weight: 500;
  margin-bottom: 1rem !important;
}

.pi-bio p { color: var(--muted); margin-bottom: 0.75rem; max-width: 100%; }

.pi-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.pi-links a { font-size: 0.875rem; font-weight: 500; }

.people-grid-full {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.person-card-full {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
}

.person-card-full h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.member-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top;
  border: 2px solid var(--border);
  display: block;
  margin-bottom: 0.75rem;
}

/* ── PUBLICATIONS PAGE ──────────────────────────── */
.pub-filter-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--muted);
  transition: all 0.15s;
  font-family: var(--font-sans);
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: #ece9f8;
}

.pub-group { margin-bottom: 2.5rem; }

.pub-group-heading {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.pub-list-full { list-style: none; }

.pub-group-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
  font-style: normal;
}

.pub-list-full li {
  padding: 0.85rem 0.75rem;
  border-radius: 4px;
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  flex-wrap: wrap;
  transition: background 0.15s;
}

.pub-list-full li:hover { background: var(--bg-alt); }

.pub-body {
  font-size: 0.875rem;
  color: var(--muted);
  flex: 1;
}

.pub-authors {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-top: 0.2rem;
}

.pub-scholar-note {
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--muted);
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ── ALUMNI ─────────────────────────────────── */
.alumni-subheading {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.alumni-list {
  list-style: none;
  border-top: 1px solid var(--border);
}

.alumni-list li {
  display: grid;
  grid-template-columns: 200px 1fr auto;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.alumni-name {
  font-weight: 600;
  color: var(--text);
}

.alumni-project {
  color: var(--muted);
  font-style: italic;
}

.alumni-meta {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

@media (max-width: 680px) {
  .alumni-list li {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
  .alumni-meta { text-align: left; }
}

.pub-venue-upcoming {
  background: var(--blue);
}

.pub-award {
  display: inline-block;
  margin-top: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #b45309;
  background: #fef3c7;
  border: 1px solid #fcd34d;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
}

.pub-item-book { align-items: flex-start; }

.pub-chapters {
  margin-top: 0.5rem;
}

.pub-chapters summary {
  font-size: 0.8rem;
  color: var(--blue);
  cursor: pointer;
  font-weight: 500;
}

.chapter-list {
  margin: 0.5rem 0 0 1.25rem;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.8;
}

/* ── GRANTS PAGE ────────────────────────────────── */
.grant-major {
  border-left-width: 6px;
}

.grant-desc {
  margin-top: 0.5rem !important;
  font-size: 0.825rem !important;
}

.grant .ext-link { margin-top: 0.75rem; }

/* ── CONTACT PAGE ───────────────────────────────── */
.contact-grid-full {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 1.5rem;
}

.contact-block h2 { display: block; }
.contact-block p { color: var(--muted); margin-bottom: 0.5rem; font-size: 0.9rem; }

.contact-ext-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.contact-ext-links a { font-size: 0.875rem; font-weight: 500; }

.contact-checklist {
  margin: 0.75rem 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.contact-checklist li { margin-bottom: 0.25rem; }

/* ── PROJECTS PAGE ──────────────────────────────── */
.project-entry {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 2rem;
  background: var(--white);
}

.project-entry-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem 1.75rem 0;
  flex-wrap: wrap;
}

.project-funder {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.project-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--text);
  border: none;
  padding: 0;
  margin: 0;
  display: block;
}

.project-link {
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--blue);
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 0.2rem;
}

.project-entry-body {
  padding: 1.25rem 1.75rem 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

.project-entry-body p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  max-width: 100%;
}

.project-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 1rem 0 0.5rem;
  font-size: 0.825rem;
  color: var(--muted);
}

/* ── OPEN POSITION CARD ─────────────────────────── */
.person-open {
  border: 1.5px dashed var(--border);
  background: var(--bg-alt);
}

/* ── TEACHING PAGE ──────────────────────────────── */
.course-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  background: var(--white);
}

.course-highlight {
  border-top: 3px solid var(--blue);
}

.course-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.course-code {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.2rem;
}

.course-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text);
  margin: 0;
}

.course-level {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  padding-top: 0.15rem;
}

.course-desc {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 1rem;
  max-width: 100%;
}

.course-desc-row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}
.course-desc-row .course-desc {
  margin-bottom: 0;
  flex: 1;
}
.course-desc-row .course-video {
  width: 280px;
  flex-shrink: 0;
  padding-bottom: 0;
  height: 158px; /* 280 × 9/16 */
}
.course-graphic {
  width: 220px;
  flex-shrink: 0;
  border-radius: 4px;
  object-fit: contain;
}

.course-video {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  margin-bottom: 1.25rem;
  border-radius: 4px;
  overflow: hidden;
  background: #000;
}
.course-video-thumb {
  display: block;
  position: absolute;
  inset: 0;
}
.course-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.yt-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-size: 2rem;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: background 0.2s;
}
.course-video-thumb:hover .yt-play-btn {
  background: rgba(200, 0, 0, 0.85);
}
.course-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.course-runs { display: flex; flex-direction: column; gap: 0.5rem; }

.course-run {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.825rem;
  flex-wrap: wrap;
}

.run-term {
  font-weight: 600;
  color: var(--text);
  min-width: 5rem;
}

.run-role {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  white-space: nowrap;
}

.role-examiner { background: #e8f0f9; color: var(--blue); }
.role-teacher  { background: #f0fdf4; color: #166534; }
.role-ta       { background: var(--bg-alt); color: var(--muted); }

.run-detail { color: var(--muted); font-size: 0.8rem; }

/* guest teaching list */
.teaching-list { list-style: none; margin-top: 1rem; }

.teaching-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.teaching-item:last-child { border-bottom: none; }

.teaching-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.teaching-where { font-weight: 600; }
.teaching-when  { }

.teaching-body {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.3rem;
}

.teaching-body strong { font-size: 0.925rem; }

.teaching-role {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--blue);
}

.teaching-detail {
  font-size: 0.825rem;
  color: var(--muted);
  margin: 0 !important;
  max-width: 100% !important;
}

/* supervision summary */
.supervision-summary {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.5rem 0 2.5rem;
}

.sup-stat {
  flex: 1;
  padding: 1.25rem 1rem;
  text-align: center;
  border-right: 1px solid var(--border);
}
.sup-stat:last-child { border-right: none; }

.sup-num {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--blue);
  line-height: 1.1;
}

.sup-label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.2rem;
  line-height: 1.4;
}

.sup-label small { font-size: 0.7rem; }

.sup-list { list-style: none; margin: 0.75rem 0 1.5rem; }

.sup-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--muted);
}
.sup-list li:last-child { border-bottom: none; }
.sup-list li strong { color: var(--text); }

.sup-note {
  display: block;
  font-size: 0.78rem;
  color: #999;
  margin-top: 0.1rem;
}

/* ── JINGLE BUTTON & MODAL ──────────────────────── */
.jingle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.5);
  color: rgba(255,255,255,0.85);
  font-family: var(--font-sans);
  font-size: 0.825rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.jingle-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.8);
}

.jingle-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0,0,0,0.8);
  align-items: center;
  justify-content: center;
}
.jingle-modal.open { display: flex; }

.jingle-modal-inner {
  position: relative;
  max-width: 560px;
  width: 90%;
}

.jingle-modal video {
  width: 100%;
  border-radius: 8px;
  display: block;
}

.jingle-close {
  position: absolute;
  top: -2.25rem;
  right: 0;
  background: none;
  border: none;
  color: rgba(255,255,255,0.75);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.jingle-close:hover { color: #fff; }

/* ── DUO PERSON CARDS ───────────────────────────── */
.person-card-duo {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.5rem;
}

.duo-photos {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.duo-photos .member-photo {
  margin-bottom: 0;
}

.duo-names h3 {
  font-size: 0.95rem;
  font-weight: 600;
  display: inline;
}

.duo-names h3:not(:last-child)::after {
  content: " &";
}

/* ── SLIDE PLAY/PAUSE ───────────────────────────── */
.slide-playpause {
  background: none;
  border: 1.5px solid rgba(255,255,255,0.45);
  color: rgba(255,255,255,0.75);
  font-size: 0.65rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.2s, color 0.2s;
  padding: 0;
  line-height: 1;
}
.slide-playpause:hover {
  border-color: rgba(255,255,255,0.9);
  color: #fff;
}

/* ── SLIDE PHOTO CREDIT ─────────────────────────── */
.slide-photo-credit {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  font-size: 0.65rem;
  color: rgba(255,255,255,0.55);
  z-index: 10;
  font-style: italic;
}

/* ── PUBLICATION DOI LINK ───────────────────────── */
.pub-doi {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--blue);
  font-weight: 500;
  white-space: nowrap;
}

/* ── PROJECT PHOTO ROW ──────────────────────────── */
.project-desc-row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.project-photo {
  width: 320px;
  flex-shrink: 0;
  border-radius: 4px;
  object-fit: cover;
}

/* ── RESPONSIVE ─────────────────────────────────── */
@media (max-width: 700px) {
  .hero-inner { flex-direction: column; gap: 1.5rem; text-align: center; }
  .hero-links { justify-content: center; }
  .slide-text { padding: 5rem 1.25rem 4rem; }
  .slide-text-inner { margin-left: 0; }
  .stats-bar { flex-wrap: wrap; }
  .stat { padding: 1rem 1.5rem; flex: 1 1 50%; }
  nav ul { gap: 1rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .pi-card { flex-direction: column; gap: 1.5rem; }
  .pi-photo img { width: 120px; height: 120px; }
  .contact-grid-full { grid-template-columns: 1fr; gap: 2rem; }
  .section-header { flex-direction: column; gap: 0.25rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .footer-right { align-items: flex-start; }
  .footer-links { justify-content: flex-start; }
  .nav-chalmers { display: none; }
}