:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #5c5c5c;
  --color-accent: #1e4d7b;
  --color-accent-hover: #163a5e;
  --color-border: #e2e2e2;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --max-width: 52rem;
  --header-height: 3.25rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgb(0 0 0 / 6%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.25rem;
  min-height: var(--header-height);
}

.site-brand {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-accent);
  text-decoration: none;
  white-space: nowrap;
}

.site-brand:hover {
  color: var(--color-accent-hover);
}

.site-nav__list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.15rem 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.65rem;
  font-size: 0.9rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: 0.35rem;
  white-space: nowrap;
}

.site-nav__link:hover {
  background: var(--color-bg);
  color: var(--color-accent);
}

.site-nav__link--active {
  background: color-mix(in srgb, var(--color-accent) 12%, transparent);
  color: var(--color-accent);
  font-weight: 600;
}

.site-nav__link i {
  width: 1.1em;
  text-align: center;
  opacity: 0.85;
}

.page-banner {
  width: 100%;
  overflow: hidden;
  background: var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-banner img {
  display: block;
  width: 100%;
  height: clamp(8rem, 22vw, 14rem);
  object-fit: cover;
  object-position: center;
}

.site-main {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.page-content :is(h1, h2, h3) {
  font-family: var(--font-serif);
  line-height: 1.25;
  margin-top: 1.75em;
  margin-bottom: 0.5em;
}

.page-content h1:first-child {
  margin-top: 0;
}

.page-content a {
  color: var(--color-accent);
}

.page-content img {
  max-width: 100%;
  height: auto;
}

.page-content .placeholder {
  color: var(--color-muted);
  font-style: italic;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Students page */
.site-main:has(.students-page) {
  max-width: 56rem;
}

/* Contact page */
.site-main:has(.contact-page) {
  max-width: 56rem;
}

.contact-page .obfuscated-email {
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px dotted var(--color-accent);
  cursor: pointer;
}

.contact-page .obfuscated-email:hover {
  color: var(--color-accent-hover);
  border-bottom-style: solid;
}

.contact-address {
  margin-top: 2rem;
}

.contact-address > h2 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.contact-address__grid {
  display: grid;
  grid-template-columns: 1fr minmax(14rem, 1.1fr);
  gap: 1.5rem 2rem;
  align-items: start;
}

.contact-address__text > :first-child {
  margin-top: 0;
}

.contact-address__text p {
  margin: 0 0 0.65rem;
}

.contact-address__map {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 16rem;
}

.contact-map__iframe {
  display: block;
  width: 100%;
  flex: 1;
  min-height: 16rem;
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  background: var(--color-border);
}

.contact-map__link {
  font-size: 0.85rem;
  text-align: right;
}

@media (max-width: 720px) {
  .contact-address__grid {
    grid-template-columns: 1fr;
  }
}

/* Contact calendars */
.contact-calendars {
  margin-top: 2.5rem;
}

.contact-calendars > h2 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.contact-calendars__legend {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 1.5rem 2rem;
  margin-bottom: 1.25rem;
  overflow-x: auto;
  padding-bottom: 0.15rem;
}

.contact-calendar {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  text-decoration: none;
}

.contact-calendar .fa-rss {
  font-size: 0.85em;
  opacity: 0.9;
}

a.contact-calendar:hover {
  text-decoration: underline;
}

.contact-calendars__legend .contact-calendar--work,
.page-content .contact-calendars__legend a.contact-calendar--work {
  color: #2e7d32;
}

.contact-calendars__legend .contact-calendar--worm,
.page-content .contact-calendars__legend a.contact-calendar--worm {
  color: #0d9488;
}

.contact-calendars__legend .contact-calendar--ma,
.page-content .contact-calendars__legend a.contact-calendar--ma {
  color: #c62828;
}

.page-content .contact-calendars__legend a.contact-calendar--work:hover {
  color: #1b5e20;
}

.page-content .contact-calendars__legend a.contact-calendar--worm:hover {
  color: #0f766e;
}

.contact-week-calendar-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.contact-week-calendar__loading {
  margin: 0;
  padding: 1.5rem 0;
  text-align: center;
  color: var(--color-muted);
}

.contact-week-calendar__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.75rem;
}

.contact-week-calendar__nav-label {
  min-width: 10rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.contact-week-calendar__nav-btn,
.contact-week-calendar__today-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.65rem;
  font: inherit;
  font-size: 0.85rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.contact-week-calendar__nav-btn {
  width: 2.1rem;
  padding-inline: 0;
}

.contact-week-calendar__nav-btn:hover,
.contact-week-calendar__today-btn:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
}

.contact-week-calendar__today-btn {
  margin-left: 0.25rem;
  font-weight: 600;
}

.contact-week-calendar {
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  background: var(--color-surface);
  overflow: hidden;
}

.contact-week-calendar__header {
  display: grid;
  grid-template-columns: 3.25rem repeat(7, 1fr);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.contact-week-calendar__corner {
  border-right: 1px solid var(--color-border);
}

.contact-week-calendar__day-heading {
  padding: 0.5rem 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
  border-right: 1px solid var(--color-border);
}

.contact-week-calendar__day-heading:last-child {
  border-right: 0;
}

.contact-week-calendar__day-heading--today {
  background: color-mix(in srgb, var(--color-text) 16%, var(--color-bg));
  color: var(--color-text);
  font-weight: 700;
}

.contact-week-calendar__body {
  display: grid;
  grid-template-columns: 3.25rem 1fr;
}

.contact-week-calendar__times {
  border-right: 1px solid var(--color-border);
  font-size: 0.7rem;
  color: var(--color-muted);
}

.contact-week-calendar__time-label {
  height: 2.5rem;
  padding: 0.15rem 0.35rem 0 0;
  text-align: right;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 55%, transparent);
  box-sizing: border-box;
}

.contact-week-calendar__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  min-height: calc(2.5rem * var(--calendar-hours, 14));
}

.contact-week-calendar__day-column {
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.contact-week-calendar__day-column:last-child {
  border-right: 0;
}

.contact-week-calendar__allday {
  min-height: 1.5rem;
  padding: 0.2rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.contact-week-calendar__timed {
  position: relative;
  flex: 1;
  min-height: calc(2.5rem * var(--calendar-hours, 14));
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent calc(2.5rem - 1px),
    color-mix(in srgb, var(--color-border) 55%, transparent) calc(2.5rem - 1px),
    color-mix(in srgb, var(--color-border) 55%, transparent) 2.5rem
  );
}

.contact-week-calendar__event {
  position: absolute;
  left: 0.15rem;
  right: 0.15rem;
  padding: 0.15rem 0.3rem;
  border-radius: 0.2rem;
  font-size: 0.68rem;
  line-height: 1.2;
  color: #fff;
  overflow: hidden;
  box-sizing: border-box;
  z-index: 1;
}

.contact-week-calendar__event--allday {
  position: static;
  left: auto;
  right: auto;
}

.contact-week-calendar__event-title {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-week-calendar__event--work {
  background: #2e7d32;
  border: 1px solid #1b5e20;
}

.contact-week-calendar__event--worm {
  background: #0d9488;
  border: 1px solid #0f766e;
}

.contact-week-calendar__event--ma {
  background: #c62828;
  border: 1px solid #8e0000;
}

.contact-week-calendar__empty {
  margin: 0;
  padding: 1.5rem 1rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.contact-week-calendar__empty code {
  font-size: 0.85em;
}

/* Home page */
.site-main:has(.home-page) {
  max-width: 56rem;
}

.home-page__grid {
  display: grid;
  grid-template-columns: 1fr minmax(10rem, 14rem);
  gap: 1.75rem 2rem;
  align-items: start;
}

.home-page__content > :first-child {
  margin-top: 0;
}

.home-page__photo {
  background: transparent;
}

.home-page__photo img {
  display: block;
  width: 100%;
  background: transparent;
}

@media (max-width: 640px) {
  .home-page__grid {
    grid-template-columns: 1fr;
  }

  .home-page__photo {
    order: -1;
    max-width: 12rem;
    margin: 0 auto;
  }
}

/* Research page */
.site-main:has(.research-page) {
  max-width: 62rem;
}

.research-page__grid {
  display: grid;
  gap: 2rem;
}

.research-page__grid--with-sidebar {
  grid-template-columns: minmax(0, 1fr) minmax(10rem, 13rem);
  align-items: start;
}

.research-overview > :first-child {
  margin-top: 0;
}

.research-tabs {
  margin-top: 1.75rem;
}

.research-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1.25rem;
}

.research-tabs__tab {
  flex: 0 0 auto;
  margin: 0;
  padding: 0.45rem 0.55rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.25;
  text-align: center;
  white-space: nowrap;
  color: var(--color-muted);
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 0.35rem 0.35rem 0 0;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.research-tabs__tab:hover {
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
}

.research-tabs__tab[aria-selected='true'] {
  color: var(--color-accent);
  font-weight: 600;
  background: var(--color-surface);
  border-color: var(--color-border);
  margin-bottom: -1px;
  padding-bottom: calc(0.5rem + 1px);
}

.research-tabs__panel > :first-child {
  margin-top: 0;
}

.research-figure {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(8rem, 11rem);
  gap: 1rem 1.5rem;
  align-items: start;
  margin: 1.25rem 0;
}

.research-figure__media {
  min-width: 0;
}

.research-figure__trigger {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  cursor: zoom-in;
  border-radius: 0.35rem;
}

.research-figure__trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.research-figure__trigger img {
  display: block;
  width: 100%;
  border-radius: 0.35rem;
  border: 1px solid var(--color-border);
}

.research-figure__caption {
  margin: 0.45rem 0 0;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--color-muted);
}

.research-figure__text > :first-child {
  margin-top: 0;
}

.research-figure__text > :last-child {
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .research-figure {
    grid-template-columns: 1fr minmax(6rem, 8rem);
    gap: 0.85rem 1rem;
  }
}

.research-figure-lightbox {
  position: fixed;
  inset: 0;
  width: min(92vw, 48rem);
  max-width: min(92vw, 48rem);
  height: fit-content;
  max-height: 90vh;
  margin: auto;
  padding: 0;
  border: none;
  border-radius: 0.5rem;
  background: var(--color-surface);
  box-shadow: 0 1rem 3rem rgb(0 0 0 / 25%);
  overflow: auto;
}

.research-figure-lightbox::backdrop {
  background: rgb(0 0 0 / 55%);
}

.research-figure-lightbox__close {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin: 0;
  padding: 0;
  font: inherit;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text);
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  cursor: pointer;
}

.research-figure-lightbox__close:hover {
  color: var(--color-accent);
}

.research-figure-lightbox__content {
  margin: 0;
}

.research-figure-lightbox__content img {
  display: block;
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 0.5rem 0.5rem 0 0;
}

.research-figure-lightbox__caption {
  margin: 0;
  padding: 0.75rem 1rem 1rem;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--color-muted);
}

.research-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  background: var(--color-surface);
}

.research-sidebar > h2 {
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
}

.research-sidebar__posters {
  margin: 0;
  padding: 0;
  list-style: none;
}

.research-sidebar__posters li {
  margin-bottom: 0.55rem;
}

.research-sidebar__posters li:last-child {
  margin-bottom: 0;
}

.research-poster-link {
  font-size: 0.9rem;
  line-height: 1.35;
  text-decoration: none;
}

.research-sidebar .research-poster-link {
  color: var(--color-text);
}

.research-sidebar .research-poster-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

@media (max-width: 800px) {
  .research-page__grid--with-sidebar {
    grid-template-columns: 1fr;
  }

  .research-sidebar {
    position: static;
  }

}

/* Resources page */
.site-main:has(.resources-page) {
  max-width: 62rem;
}

.resources-page__grid {
  display: grid;
  gap: 2rem;
}

.resources-page__grid--with-sidebar {
  grid-template-columns: minmax(0, 1fr) minmax(13rem, 17rem);
  align-items: start;
}

.resources-page__main > :first-child {
  margin-top: 0;
}

.resources-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  background: var(--color-surface);
}

.resources-rss > h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.resources-rss__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: 0.85rem;
  border-radius: 0.35rem;
  color: #e85d04;
  background: color-mix(in srgb, #e85d04 12%, var(--color-surface));
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.resources-rss__link:hover {
  color: var(--color-surface);
  background: #e85d04;
  border-color: #e85d04;
}

.resources-rss__link i {
  font-size: 1.1rem;
}

.resources-rss__items {
  margin: 0;
  padding: 0;
  list-style: none;
}

.resources-rss__items li {
  margin-bottom: 0.65rem;
  font-size: 0.88rem;
  line-height: 1.35;
}

.resources-rss__items li:last-child {
  margin-bottom: 0;
}

.resources-rss__items a {
  color: var(--color-text);
  text-decoration: none;
}

.resources-rss__items a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.resources-rss__date {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.resources-rss__loading {
  margin: 0;
  padding: 0.5rem 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.resources-rss__empty {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
  font-style: italic;
}

.resources-sidebar__extra {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-muted);
}

.resources-sidebar__extra > :first-child {
  margin-top: 0;
}

@media (max-width: 800px) {
  .resources-page__grid--with-sidebar {
    grid-template-columns: 1fr;
  }

  .resources-sidebar {
    position: static;
  }
}

/* Publications page */
.publications-profile {
  margin-bottom: 1.75rem;
}

.publications-profile p {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.1rem;
  margin: 0;
}

.publications-profile a {
  display: inline-flex;
  line-height: 1;
  color: var(--color-text);
}

.publications-profile a:hover {
  color: var(--color-accent);
}

.publications-list > h1 {
  margin-top: 0;
}

.publication-entry {
  margin-bottom: 1.35rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--color-border);
}

.publication-entry:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.publication-entry__text {
  margin: 0 0 0.45rem;
}

.publication-entry__number {
  font-weight: 600;
}

.publication-entry__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.publication-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.35rem;
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.publication-link:hover {
  color: var(--color-surface);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.publication-link i {
  font-size: 1.05rem;
}

@media (max-width: 720px) {
  .contact-calendars__legend {
    gap: 1rem;
  }

  .contact-week-calendar__day-heading {
    font-size: 0.68rem;
    padding-inline: 0.15rem;
  }
}

.students-section + .students-section {
  margin-top: 2.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border);
}

.students-section > h1:first-child {
  margin-top: 0;
}

.student-entry {
  margin-top: 1.75rem;
}

.student-entry > h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.student-entry__grid {
  display: grid;
  grid-template-columns: minmax(7.5rem, 10rem) 1fr;
  gap: 1.25rem 1.5rem;
  align-items: start;
}

.student-entry__photo img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 0.35rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.student-entry__details > p {
  margin: 0 0 0.75rem;
}

.student-entry__details > p:last-of-type {
  margin-bottom: 0;
}

.student-entry__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.85rem;
}

.student-doc-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.35rem;
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.student-doc-link:hover {
  color: var(--color-surface);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.student-doc-link i {
  font-size: 1.05rem;
}

@media (max-width: 520px) {
  .student-entry__grid {
    grid-template-columns: minmax(6rem, 8rem) 1fr;
    gap: 1rem;
  }
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  margin-top: auto;
}

.site-footer__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .site-nav__list {
    flex-wrap: wrap;
    justify-content: center;
  }
}