/* ============================================================
   Person Profile Page — Stylesheet
   Inspired by Stanford HAI + Mila + Meta AI patterns
   ============================================================ */

.person-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}

.person-page-header {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem;
  align-items: start;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.person-page-photo-wrap {
  position: sticky;
  top: 5rem;
}

.person-page-photo {
  width: 200px;
  height: 200px;
  border-radius: 12px;
  object-fit: cover;
  object-position: center top;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.person-page-info {
  padding-top: 0.25rem;
}

.profile-role {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}

.person-page-name {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 0.3rem;
}

.person-page-title {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.15rem;
}

.person-page-affiliation {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.person-page-affiliation a {
  font-weight: 500;
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
}

.research-tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: border-color 0.15s, color 0.15s;
}

.research-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.profile-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(0, 102, 204, 0.04);
  text-decoration: none;
}

.profile-link svg {
  flex-shrink: 0;
  opacity: 0.65;
}

.profile-link:hover svg {
  opacity: 1;
}

/* --- Body / Bio --- */

.person-page-body {
  padding-top: 2rem;
}

.person-page-bio h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
}

.person-page-bio p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 680px;
}

/* --- Back link --- */

.person-page-back {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.person-page-back a {
  font-weight: 500;
  font-size: 0.95rem;
}

/* --- Publications --- */

.person-page-publications {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.person-page-publications h2 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pub-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.6rem;
  height: 1.6rem;
  padding: 0 0.45rem;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pub-year-marker {
  position: sticky;
  top: 3.5rem;
  z-index: 5;
  padding: 0.6rem 0 0.4rem;
  background: var(--color-bg);
}

.pub-year-marker span {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.5px;
  border-bottom: 3px solid var(--color-accent);
  padding-bottom: 0.15rem;
}

.pub-entry {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 50%, transparent);
  align-items: start;
}

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

.pub-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 5rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  white-space: nowrap;
  margin-top: 0.15rem;
}

.pub-journal {
  background: #e8f4f8;
  color: #0c7490;
}

.pub-conference {
  background: #f0e8f8;
  color: #6b21a8;
}

.pub-chapter {
  background: #e8f0e8;
  color: #2d6a2e;
}

.pub-thesis {
  background: #fef3cd;
  color: #856404;
}

.pub-report {
  background: #f0f0f0;
  color: #555;
}

.pub-inpress {
  background: #fff3e0;
  color: #e65100;
}

.pub-book {
  background: #e8eff8;
  color: #1a4a7a;
}

.pub-other {
  background: #f5f5f5;
  color: #777;
}

.pub-content {
  min-width: 0;
}

.pub-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 0.2rem;
}

.pub-authors {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 0.15rem;
}

.pub-venue {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  font-style: italic;
  line-height: 1.4;
  margin-bottom: 0.2rem;
}

.pub-links {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.3rem;
}

.pub-link {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  transition: background 0.15s, border-color 0.15s;
}

.pub-link:hover {
  background: rgba(0, 102, 204, 0.06);
  border-color: var(--color-accent);
  text-decoration: none;
}

.pub-link-extra {
  color: #2a7d4f;
  border-color: #c3dece;
}

.pub-link-extra:hover {
  background: rgba(42, 125, 79, 0.06);
  border-color: #2a7d4f;
}

.pub-link-cite {
  color: #8b5e3c;
  border-color: #d9c9b8;
  cursor: pointer;
  background: none;
  font-family: inherit;
}

.pub-link-cite:hover {
  background: rgba(139, 94, 60, 0.06);
  border-color: #8b5e3c;
}

.pub-bibtex {
  margin-top: 0.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  position: relative;
}

.pub-bibtex pre {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--color-text);
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.bib-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
  gap: 0.5rem;
}

.bib-copy {
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-accent);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}

.bib-copy:hover {
  background: rgba(0, 102, 204, 0.06);
}

.bib-provenance {
  font-size: 0.7rem;
  color: var(--color-text-muted, #6c757d);
  white-space: nowrap;
}

.bib-source-link {
  color: var(--color-primary, #0066cc);
  text-decoration: none;
  font-weight: 600;
}

.bib-source-link:hover {
  text-decoration: underline;
}

.bib-source-tag {
  font-weight: 600;
  color: var(--color-text-muted, #6c757d);
}

/* --- Responsive --- */

@media (max-width: 640px) {
  .person-page-header {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
  }

  .person-page-photo-wrap {
    position: static;
    display: flex;
    justify-content: center;
  }

  .person-page-photo {
    width: 160px;
    height: 160px;
  }

  .person-page-name {
    font-size: 1.7rem;
  }

  .research-tags {
    justify-content: center;
  }

  .profile-links {
    justify-content: center;
  }

  .pub-entry {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .pub-badge {
    justify-self: start;
  }
}