/* ---- Layout & typography ---- */

/* Keep the top navbar visible while scrolling */
header.headroom,
header.headroom--unpinned {
  transform: none !important;
  position: fixed !important;
}

main.content {
  max-width: 42rem;
}

#quarto-margin-sidebar .toc-actions {
  margin-bottom: 0.5rem;
}

#quarto-margin-sidebar .toc-section-number {
  display: none;
}

/* Keep section TOC links visible (Quarto collapses them by default) */
#TOC ul,
#TOC ul.collapse,
#quarto-margin-sidebar #TOC ul,
#quarto-sidebar #TOC ul {
  display: block !important;
  visibility: visible !important;
  height: auto !important;
}

#TOC .nav-link {
  font-size: 0.95rem;
  padding: 0.35rem 0;
  color: #555;
  text-decoration: none;
  display: block;
}

#TOC .nav-link:hover {
  color: #1f9bcf;
}

#TOC .nav-link.active {
  color: #1f9bcf;
  font-weight: 600;
}

h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid #e8ecef;
}

h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

/* ---- Project cards ---- */

.project-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin: 1.5rem 0 2rem;
  padding: 1.25rem;
  background: #f8f9fa;
  border-radius: 0.5rem;
  border-left: 4px solid #1f9bcf;
}

/* ---- EM9 sub-paradigms (Shopping Game, Zoo Game) ---- */

.sub-projects {
  margin: 1rem 0 0.5rem;
  padding-left: 1rem;
  border-left: 2px solid #dee2e6;
}

.sub-project {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.85rem;
  font-size: 0.88em;
  line-height: 1.55;
  color: #444;
}

.sub-project:last-child {
  margin-bottom: 0;
}

.sub-project > p {
  margin: 0;
  flex-shrink: 0;
}

.sub-project img,
.sub-project img.img-fluid {
  width: 100px;
  max-width: 100px;
  height: auto;
  border-radius: 0.3rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.sub-project-text h4 {
  font-size: 0.95em;
  font-weight: 600;
  margin: 0 0 0.2rem;
  color: #333;
}

.sub-project-text p {
  margin-bottom: 0;
}

@media (max-width: 576px) {
  .sub-project {
    gap: 0.6rem;
  }

  .sub-project img,
  .sub-project img.img-fluid {
    width: 80px;
    max-width: 80px;
  }
}

.project-image {
  flex-shrink: 0;
}

.project-image img {
  width: 140px;
  height: auto;
  border-radius: 0.35rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.project-body {
  flex: 1;
}

.project-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 576px) {
  .project-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .project-image img {
    width: 120px;
  }
}

/* ---- Publications ---- */

.pub-entry {
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid #e8ecef;
}

.pub-entry:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pub-entry p {
  margin-bottom: 0.35rem;
  color: #555;
}

.pub-entry .btn {
  margin-top: 0.5rem;
}

/* ---- Contact page ---- */

.contact-section {
  margin-bottom: 2rem;
}

.contact-emails {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05em;
  text-decoration: none;
  padding: 0.5rem 0;
}

.contact-link:hover {
  text-decoration: underline;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem 1rem;
  background: #f8f9fa;
  border-radius: 0.5rem;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.contact-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.contact-icon,
.contact-card img.contact-icon,
.contact-card img.img-fluid {
  width: 72px;
  max-width: 72px;
  height: auto;
  margin-bottom: 0.75rem;
}

.contact-card a:not(.contact-icon) {
  font-size: 0.9em;
  margin-top: 0.25rem;
}

/* ---- About page polish ---- */

.about-entity .about-contents {
  line-height: 1.7;
}