/* ---------------------------------------------------------------
   Signature element: the "accession stamp" — a small bordered,
   monospace tag styled after library due-date / specimen catalog
   stamps. Used on publications and notes, where academic work
   already carries a real identifier (year, venue, DOI) — so the
   stamp encodes real metadata rather than decorating for its own sake.
   --------------------------------------------------------------- */

.stamp {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: #2B5F5A;
  border: 1px solid #2B5F5A;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  margin-bottom: 0.5rem;
  transform: rotate(-1deg);
}

.stamp.rust { color: #A6532A; border-color: #A6532A; }

/* ---------------- Hero ---------------- */

.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  align-items: center;
  padding: 1.5rem 0 2.5rem 0;
  border-bottom: 1px solid #D9D2BE;
  margin-bottom: 2.5rem;
}

.hero-eyebrow {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6B7B4F;
  margin-bottom: 0.6rem;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.05;
  margin-bottom: 0.6rem;
}

.hero .role {
  font-family: "Source Serif 4", serif;
  font-style: italic;
  color: #4B554B;
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.hero-portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: #F7F4EA;
  border: 1px solid #D9D2BE;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  color: #6B7B4F;
  text-align: center;
  padding: 1rem;
  border-radius: 2px;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
}

.quick-links a { color: #1E2A24; border-bottom: 1px solid #D9D2BE; }
.quick-links a:hover { color: #A6532A; border-color: #A6532A; }

/* ---------------- Index-card grid (research areas) ---------------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}

.index-card {
  border: 1px solid #D9D2BE;
  background: #F7F4EA;
  padding: 1.3rem 1.4rem;
  border-radius: 2px;
  position: relative;
}

.index-card .card-no {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  color: #A6532A;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: block;
}

.index-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.index-card p {
  font-size: 0.92rem;
  color: #4B554B;
  margin-bottom: 0;
}

/* ---------------- Publication / note cards ---------------- */

.pub-card {
  border-bottom: 1px solid #D9D2BE;
  padding: 1.3rem 0;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 1rem;
}

.pub-card:first-of-type { border-top: 1px solid #D9D2BE; margin-top: 1.5rem; }

.pub-year {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  color: #6B7B4F;
  padding-top: 0.2rem;
}

.pub-card h3 {
  font-size: 1.08rem;
  margin-bottom: 0.3rem;
}

.pub-meta {
  font-size: 0.88rem;
  color: #4B554B;
  font-style: italic;
  margin-bottom: 0.4rem;
}

.pub-links a {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-right: 1rem;
}

.pub-links a.cite-toggle {
  color: #A6532A;
  border-bottom: 1px dotted #A6532A;
  cursor: pointer;
}

.cite-box {
  display: none;
  margin-top: 0.7rem;
  padding: 0.8rem 1rem;
  background: #F7F4EA;
  border: 1px solid #D9D2BE;
  border-radius: 2px;
  font-size: 0.78rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  color: #4B554B;
}

.cite-box.open { display: block; }

.circle-crop {
  width: 250px;          /* Must be equal to height */
  height: 250px;         /* Must be equal to width */
  border-radius: 50%;    /* Turns the square into a perfect circle */
  object-fit: cover;     /* Prevents distortion by cropping the edges */
  object-position: center; /* Centers the image content inside the circle */
  margin-top: 100px;
}

@media (max-width: 700px) {
  .hero { grid-template-columns: 1fr; }
  .hero-portrait { max-width: 220px; margin: 30 auto; }
  .pub-card { grid-template-columns: 1fr; }
}