/* Page layout — edit look here; tokens live in modernist-tokens.css */

a {
  color: var(--color-accent-700);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  min-height: 100vh;
}

.rule {
  height: 2px;
  border: 0;
  background: var(--color-divider);
  margin: 0;
}

/* — nav — */
#main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 32px;
  border-bottom: 2px solid var(--color-divider);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}

.nav-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  font-size: 13px;
  color: var(--color-text);
}

/* — sections — */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 56px 32px;
}

.section-contact {
  padding-bottom: 80px;
}

.kicker {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  margin-bottom: 14px;
  font-family: var(--font-heading);
  font-weight: 800;
}

#research .kicker {
  margin-bottom: 36px;
}

.section-title {
  font-size: 30px;
  margin: 0 0 36px;
  max-width: 40ch;
}

.section-title-sm {
  margin: 0 0 20px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 12px;
}

.link-strong {
  font-size: 13px;
  font-family: var(--font-heading);
  font-weight: 800;
}

/* — about / hero — */
#about {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 32px 56px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: stretch;
}

.portrait {
  width: 100%;
  height: 100%;
  min-height: 340px;
  overflow: hidden;
}

.portrait img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}

.about-name {
  font-size: 46px;
  margin: 0 0 6px;
}

.about-role {
  font-size: 17px;
  color: color-mix(in srgb, var(--color-text) 65%, transparent);
  margin-bottom: 24px;
}

.about-body {
  font-size: 16px;
  line-height: 1.65;
  margin: 0 0 16px;
}

.about-body:last-of-type {
  margin-bottom: 28px;
}

.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  padding: 8px 16px;
  border: 1px solid var(--color-divider);
  font-family: var(--font-heading);
  font-weight: 800;
}

/* — research grid — */
#research-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 2px solid var(--color-divider);
  border-left: 2px solid var(--color-divider);
}

.research-cell {
  padding: 24px 22px;
  border-right: 2px solid var(--color-divider);
  border-bottom: 2px solid var(--color-divider);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.research-cell h3 {
  font-size: 18px;
  margin: 0;
}

.research-cell p {
  font-size: 13px;
  opacity: 0.75;
  margin: 0;
  line-height: 1.5;
}

/* — publications —
   To add an entry, copy a .pub-row block and fill year / title / cite / link. */
.pub-fold {
  margin: 0;
}

.pub-fold + .pub-fold {
  margin-top: 36px;
}

.section-head + .pub-fold {
  margin-top: 0;
}

.pub-fold > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0;
  padding: 4px 0 10px;
  user-select: none;
}

.pub-fold > summary::-webkit-details-marker {
  display: none;
}

.pub-fold > summary h3 {
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-heading);
  margin: 0;
  display: inline;
}

.pub-fold > summary::after {
  content: '−';
  margin-left: auto;
  font-size: 16px;
  font-weight: 800;
  color: var(--color-accent-700);
  line-height: 1;
}

.pub-fold:not([open]) > summary::after {
  content: '+';
}

.pub-fold > summary:hover {
  color: var(--color-accent-700);
}

.pub-fold-note {
  font-size: 13px;
  font-weight: 400;
  font-family: var(--font-body);
  opacity: 0.55;
}

.pub-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 20px 0;
  border-top: 2px solid var(--color-divider);
}

.pub-year {
  font-size: 13px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent);
  font-family: var(--font-heading);
  font-weight: 800;
}

.pub-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.pub-cite {
  font-size: 13px;
  opacity: 0.7;
}

.pub-type {
  display: inline-block;
  margin-left: 10px;
  font-size: 11px;
  font-weight: 800;
  font-family: var(--font-heading);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  vertical-align: middle;
}

.pub-view {
  font-size: 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  white-space: nowrap;
}

.pub-list-end {
  border-top: 2px solid var(--color-divider);
}

/* — contact — */
#contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

.contact-lead {
  font-size: 15px;
  line-height: 1.6;
  max-width: 44ch;
  opacity: 0.85;
  margin: 0 0 20px;
}

.contact-email {
  font-size: 20px;
  font-family: var(--font-heading);
  font-weight: 800;
}

.contact-address {
  font-size: 14px;
  line-height: 1.7;
  opacity: 0.8;
}

.contact-address .label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 10px;
}

/* — footer — */
.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 32px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  opacity: 0.6;
}

@media (max-width: 760px) {
  #about { grid-template-columns: 1fr; }
  .portrait { min-height: 280px; max-height: 420px; }
  #research-grid { grid-template-columns: repeat(2, 1fr); }
  #contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  #research-grid { grid-template-columns: 1fr; }
  #main-nav { flex-wrap: wrap; row-gap: 10px; }
  .pub-row { grid-template-columns: 48px 1fr; }
  .pub-row .pub-view { grid-column: 2; }
}