/* page accent switching */
body[data-accent="research"]{
  --accent: var(--a1);
  --accent2: var(--a2);
}
body[data-accent="leadership"]{
  --accent: var(--a2);
  --accent2: var(--a1);
}
body[data-accent="publications"]{
  --accent: #ffd479;
  --accent2: var(--a2);
}
body[data-accent="about"]{
  --accent: #9be7ff;
  --accent2: var(--a1);
}

/* “BAM” continuity line under section headings */
.sectionhead h2{
  position:relative;
  padding-left: 12px;
}
.sectionhead h2::before{
  content:"";
  position:absolute;
  left:0;
  top: 3px;
  width: 4px;
  height: 18px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 25%, transparent);
}

/* subtle page title style */
.page-title{
  margin:0;
  font-size: 24px;
  letter-spacing: -0.4px;
}
.page-sub{
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.6;
  max-width: 85ch;
  font-size: 15px;
}

/* premium divider */
.hr{
  height:1px;
  background: rgba(255,255,255,.06);
  margin: 14px 0;
}


/* =============================
   Research Talks (clean + premium)
============================= */
.talks{
  margin-top: 14px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 980px){
  .talks{ grid-template-columns: 1fr; }
}

.talks-copy{
  border-radius: 18px;
  padding: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
}

.talks-lede{
  margin: 0;
  max-width: 72ch;
  color: var(--muted);
  line-height: 1.65;
}

.talks-lede strong{
  color: var(--text);
  font-weight: 800;
}

.talks-steps{
  margin-top: 14px;
  display: grid;
  gap: 12px;
  position: relative;
}

.talks-step{
  display: flex;
  gap: 12px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(0,0,0,0.16);
}

.step-badge{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 800;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
}

.step-title{
  font-weight: 800;
  letter-spacing: -0.01em;
}

.step-desc{
  margin-top: 2px;
  opacity: .82;
}

.talks-note{
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.06);
  opacity: .75;
}

/* Right side: video cards */
.talks-grid{
  display: grid;
  gap: 14px;
}

.talkCard{
  border-radius: 18px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  box-shadow: 0 18px 55px rgba(0,0,0,0.32);
}

.talkCard-top{
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
}

.talkPill{
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(0,0,0,0.18);
  width: fit-content;
}

.talkYear{ font-weight: 800; }
.talkTag{
  font-size: .75rem;
  letter-spacing: .10em;
  text-transform: uppercase;
  opacity: .75;
}

.talkTitle{
  font-weight: 800;
  letter-spacing: -0.01em;
}

.talkVideo{
  aspect-ratio: 16 / 9;
  border-radius: 14px;
  overflow: hidden;
  background: #000;
  border: 1px solid rgba(255,255,255,0.08);
}

.talkVideo iframe{
  width: 100%;
  height: 100%;
  border: 0;
}

.talkCaption{
  margin-top: 10px;
  opacity: .86;
  line-height: 1.5;
}