:root {
  --bg: #fbf7f2;
  --bg-deep: #f4ede5;
  --surface: rgba(255, 255, 255, 0.72);
  --line: rgba(78, 60, 48, 0.12);
  --line-strong: rgba(78, 60, 48, 0.22);
  --text: #2f241d;
  --muted: #6f6258;
  --accent: #a05c68;
  --accent-strong: #8f4654;
  --accent-rgb: 160, 92, 104;
  --accent-soft: rgba(var(--accent-rgb), 0.12);
  --shadow: 0 20px 45px rgba(58, 38, 28, 0.08);
  --shell-gutter: 40px;
  --shell: min(1120px, calc(100vw - var(--shell-gutter)));
  --serif: "Baskerville", "Baskervville", "Iowan Old Style", "Palatino Linotype",
    "Book Antiqua", Palatino, serif;
  --sans: "Avenir Next", "Nunito Sans", "Helvetica Neue", "Segoe UI", sans-serif;
}

/* Self-hosted fallbacks for devices without Baskerville or Avenir Next (Windows, Android).
   size-adjust matches their width and letter heights to the Apple fonts; Macs and iPhones never download them. */
@font-face {
  font-family: "Baskervville";
  src: url("fonts/baskervville-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  size-adjust: 93%;
}

@font-face {
  font-family: "Nunito Sans";
  src: url("fonts/nunito-sans-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  size-adjust: 102%;
}

@font-face {
  font-family: "Nunito Sans";
  src: url("fonts/nunito-sans-latin-400-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
  size-adjust: 102%;
}

@font-face {
  font-family: "Nunito Sans";
  src: url("fonts/nunito-sans-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  size-adjust: 102%;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  background:
    radial-gradient(circle at top left, rgba(var(--accent-rgb), 0.15), transparent 32%),
    radial-gradient(circle at bottom right, rgba(226, 206, 187, 0.42), transparent 34%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}

body.has-lightbox {
  overflow: hidden;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

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

button {
  font: inherit;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 247, 242, 0.84);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(78, 60, 48, 0.08);
}

.nav-shell {
  width: var(--shell);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1rem 0;
}

.brand {
  font-family: var(--serif);
  font-size: clamp(1.18rem, 1.48vw, 1.38rem);
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
}

.site-nav a {
  position: relative;
  color: var(--muted);
  text-decoration: none;
  transition: color 180ms ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.language-switch {
  display: inline-flex;
  gap: 0.35rem;
  padding: 0.2rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.56);
}

.language-switch button {
  border: none;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.language-switch button.is-active {
  background: #fff;
  color: var(--text);
}

.home-shell {
  padding: clamp(0.9rem, 2vw, 1.5rem) 0 2rem;
}

/* The portrait is its own grid item so mobile can place it inside the intro text. */
.home-layout {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(286px, 320px);
  grid-template-rows: auto 1fr;
  column-gap: clamp(2rem, 3.5vw, 3rem);
  align-items: start;
}

.home-copy {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.home-layout > .photo-frame {
  grid-column: 2;
  grid-row: 1;
  margin-top: 0.15rem;
}

.home-side {
  grid-column: 2;
  grid-row: 2;
}

.home-copy h1,
.page-header h1,
.entry-title,
.essay-section h2,
.list-section h2 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1;
}

.home-copy h1 {
  margin: 0;
  font-size: clamp(1.9rem, 1rem + 2vw, 2.6rem);
  letter-spacing: -0.025em;
  line-height: 1.1;
  text-wrap: balance;
}

.home-meta {
  margin: 0.55rem 0 1.15rem;
  color: var(--muted);
  font-size: 1rem;
}

.prose {
  display: grid;
  gap: 1rem;
}

.prose p {
  margin: 0;
  max-width: 62ch;
}

@media (min-width: 700px) {
  .intro-text p,
  #valdivia > p {
    text-wrap: pretty;
  }

  .intro-text p {
    max-width: 66ch;
  }
}

.intro-text p,
.page-summary,
.entry-meta,
.entry-note,
.essay-section p,
.news-item,
.footer-shell p {
  color: var(--muted);
}

.intro-text a,
.page-summary a,
.entry-note a,
.essay-section a,
.paper-venue a {
  color: var(--text);
  text-decoration-color: rgba(var(--accent-rgb), 0.5);
  text-underline-offset: 0.15em;
  transition:
    color 180ms ease,
    text-decoration-color 180ms ease;
}

.intro-text a:hover,
.page-summary a:hover,
.entry-note a:hover,
.essay-section a:hover,
.paper-venue a:hover {
  color: var(--accent-strong);
  text-decoration-color: currentColor;
}

.contact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.9rem;
  margin-top: 1.15rem;
}

.contact-item {
  color: var(--muted);
  text-decoration: none;
}

.contact-item:not(:last-child)::after {
  content: "·";
  margin-left: 0.9rem;
  color: rgba(111, 98, 88, 0.55);
}

.contact-item:hover {
  color: var(--text);
}

.link-row,
.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.link-row {
  margin-top: 0.95rem;
}

.link-chip,
.entry-link {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.92rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.64);
  color: var(--muted);
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

.link-chip:hover,
.entry-link:hover {
  transform: translateY(-1px);
  color: var(--text);
  border-color: var(--line-strong);
  background: #fff;
}

.link-chip.is-disabled,
.entry-link.is-disabled {
  opacity: 0.55;
  pointer-events: none;
}

.photo-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.28)),
    linear-gradient(135deg, rgba(var(--accent-rgb), 0.18), rgba(240, 227, 214, 0.82));
}

.photo-inner {
  position: absolute;
  inset: 0.48rem;
  overflow: hidden;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
}

.photo-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 22%;
  box-shadow:
    0 16px 34px rgba(58, 38, 28, 0.08),
    0 0 0 1px rgba(255, 255, 255, 0.46);
}

.photo-placeholder {
  height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.2rem;
}

.news-block {
  margin-top: 0.85rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

.news-block h2 {
  margin: 0;
  font-size: 0.84rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-weight: 700;
}

.news-list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.news-item {
  display: block;
}

.news-text {
  color: var(--text);
}

.news-updated {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.page-shell {
  padding: clamp(2rem, 4vw, 3.3rem) 0 4rem;
}

.site-load-error {
  max-width: 42rem;
  margin: 2rem auto;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  text-align: center;
}

.page-header {
  max-width: 46rem;
  margin-bottom: 2.4rem;
}

.page-header h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(2.3rem, 5vw, 3.8rem);
}

.page-summary {
  margin: 0;
  max-width: 60ch;
}

.split-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem;
  align-items: start;
}

.list-section h2,
.essay-section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.entry-list {
  border-top: 1px solid var(--line);
}

.entry {
  padding: 1.3rem 0 1.45rem;
  border-bottom: 1px solid var(--line);
}

.entry-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.entry-title {
  margin: 0;
  font-size: 1.45rem;
}

.status-pill {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(var(--accent-rgb), 0.22);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.paper-tag {
  --tag-color: var(--accent-strong);
  --tag-bg: var(--accent-soft);
  --tag-border: rgba(var(--accent-rgb), 0.24);
  border-color: var(--tag-border);
  background: var(--tag-bg);
  color: var(--tag-color);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: lowercase;
}

.paper-tag[data-tag="preprint"] {
  --tag-color: var(--accent-strong);
  --tag-bg: rgba(var(--accent-rgb), 0.13);
  --tag-border: rgba(var(--accent-rgb), 0.24);
}

.paper-tag[data-tag="conference"] {
  --tag-color: #704a64;
  --tag-bg: rgba(135, 100, 122, 0.13);
  --tag-border: rgba(135, 100, 122, 0.24);
}

.paper-tag[data-tag="journal"] {
  --tag-color: #4f6548;
  --tag-bg: rgba(102, 121, 95, 0.13);
  --tag-border: rgba(102, 121, 95, 0.25);
}

.paper-tag[data-tag="workshop"] {
  --tag-color: #42696d;
  --tag-bg: rgba(93, 125, 128, 0.13);
  --tag-border: rgba(93, 125, 128, 0.25);
}

.paper-tag[data-tag="report"] {
  --tag-color: #7b4e34;
  --tag-bg: rgba(154, 108, 79, 0.13);
  --tag-border: rgba(154, 108, 79, 0.25);
}

.paper-title a {
  text-decoration: none;
  text-decoration-color: rgba(var(--accent-rgb), 0);
  text-underline-offset: 0.16em;
  transition:
    color 180ms ease,
    text-decoration-color 180ms ease;
}

.paper-title a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
  text-decoration-color: currentColor;
}

.paper-authors {
  color: var(--text);
}

.paper-highlight {
  width: fit-content;
  max-width: 100%;
  margin: 0.85rem 0 0;
  padding: 0.38rem 0.72rem;
  border: 1px solid rgba(var(--accent-rgb), 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: #8f5660;
  font-size: 0.92rem;
  line-height: 1.35;
}

.paper-list.is-empty {
  border-bottom: 1px solid var(--line);
}

.paper-empty {
  margin: 0;
  padding: 1.3rem 0 1.45rem;
  color: var(--muted);
}

.entry-meta {
  margin: 0.45rem 0 0;
}

.entry-context {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.entry-links {
  margin-top: 0.9rem;
}

body[data-page="teaching"] .split-section {
  gap: clamp(3.4rem, 7vw, 6rem);
}

body[data-page="teaching"] .entry {
  padding: 0.9rem 0 1.08rem;
}

body[data-page="teaching"] .entry-title {
  font-size: clamp(1.07rem, 1.65vw, 1.2rem);
  line-height: 1.13;
}

body[data-page="teaching"] .entry-meta,
body[data-page="teaching"] .entry-context {
  margin-top: 0.16rem;
  font-size: 0.95rem;
  line-height: 1.4;
}

body[data-page="teaching"] .entry-links {
  margin-top: 0.48rem;
}

body[data-page="teaching"] .entry-link {
  padding: 0.42rem 0.72rem;
  font-size: 0.92rem;
}

body[data-page="teaching"] .entry-details {
  margin-top: 0.42rem;
}

body[data-page="research"] .page-header {
  margin: 0;
}

/* Research title matches the section titles; paper titles stay one step below it. */
body[data-page="research"] .page-header h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 3vw, 2rem);
  overflow-wrap: break-word;
  hyphens: auto;
}

body[data-page="research"] .entry-title {
  font-size: 1.45rem;
}

.entry-details {
  margin-top: 0.9rem;
}

.entry-details summary {
  padding-right: 0.15em;
  cursor: pointer;
  width: fit-content;
  color: var(--accent-strong);
  list-style: none;
}

.entry-details summary::-webkit-details-marker {
  display: none;
}

/* Small chevron that signals the note can be opened; it turns when the note is open. */
.entry-details-tail {
  white-space: nowrap;
}

.entry-details-chevron {
  display: inline-block;
  width: 0.36em;
  height: 0.36em;
  margin-left: 0.45em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-0.2em) rotate(45deg);
  transition: transform 180ms ease;
}

.entry-details[open] .entry-details-chevron {
  transform: translateY(0.05em) rotate(-135deg);
}

.entry-details[open] summary {
  margin-bottom: 0.7rem;
}

.entry-note {
  display: grid;
  gap: 0.75rem;
  max-width: 62ch;
}

.entry-note p {
  margin: 0;
}

.essay-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
}

body[data-page="beyond"] .page-header {
  margin: 0;
}

body[data-page="beyond"] .essay-grid {
  gap: clamp(3.4rem, 7vw, 6rem);
}

.essay-section {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.essay-section p {
  margin: 0 0 0.9rem;
  max-width: 60ch;
}

.book-list {
  display: grid;
  gap: 0;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  max-width: 60ch;
  border-top: 1px solid var(--line);
}

.book-list li {
  padding: 0.7rem 0 0.76rem;
  border-bottom: 1px solid rgba(78, 60, 48, 0.09);
  color: var(--muted);
  line-height: 1.5;
}

.book-author,
.book-title {
  color: var(--text);
}

.book-title {
  font-style: italic;
}

.book-separator {
  color: rgba(111, 98, 88, 0.7);
}

/* Compact galleries for personal sections, such as the Valdivia 2 x 2 set. */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.62rem;
  width: min(100%, 34rem);
  margin-top: 1.25rem;
}

.image-gallery-button {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  cursor: zoom-in;
  box-shadow: 0 12px 28px rgba(58, 38, 28, 0.07);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.image-gallery-button:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 32px rgba(58, 38, 28, 0.1);
}

.image-gallery-button:focus-visible,
.image-lightbox-button:focus-visible {
  outline: 2px solid rgba(var(--accent-rgb), 0.75);
  outline-offset: 3px;
}

.image-gallery-button img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Shared overlay for enlarged gallery images. */
.image-lightbox[hidden] {
  display: none;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: minmax(2.8rem, 1fr) minmax(0, auto) minmax(2.8rem, 1fr);
  align-items: center;
  justify-items: center;
  gap: clamp(0.6rem, 2vw, 1.25rem);
  padding: clamp(1rem, 4vw, 2rem);
  background: rgba(32, 25, 21, 0.82);
  backdrop-filter: blur(14px);
}

.image-lightbox-frame {
  display: grid;
  justify-items: center;
  gap: 0.85rem;
  margin: 0;
}

.image-lightbox-image {
  max-width: min(78vw, 980px);
  max-height: 76vh;
  object-fit: contain;
  border-radius: 16px;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.34);
}

.image-lightbox-caption {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.95rem;
  text-align: center;
}

.image-lightbox-button {
  display: inline-grid;
  place-items: center;
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  cursor: pointer;
  line-height: 1;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.image-lightbox-button:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.44);
  background: rgba(255, 255, 255, 0.24);
}

.image-lightbox-close {
  position: absolute;
  top: clamp(0.8rem, 2vw, 1.4rem);
  right: clamp(0.8rem, 2vw, 1.4rem);
}

.site-footer {
  padding: 0 0 2rem;
}

.footer-shell p {
  margin: 0;
  text-align: center;
  font-size: 0.92rem;
}

.footer-shell.is-hidden {
  display: none;
}

/* Narrow desktops: slightly tighter header gaps so the Spanish menu still fits on one row. */
@media (min-width: 781px) and (max-width: 820px) {
  .nav-shell,
  .site-nav {
    column-gap: 1rem;
  }
}

@media (max-width: 780px) {
  /* Compact header: name and language switch share the first row when they fit, navigation goes below. */
  .nav-shell {
    flex-wrap: wrap;
    gap: 0.55rem 1rem;
    padding: 0.75rem 0 0.8rem;
  }

  .brand {
    white-space: normal;
  }

  .site-nav {
    order: 3;
    flex-basis: 100%;
    justify-content: flex-start;
    gap: 0.35rem 1.1rem;
  }

  .home-layout,
  .split-section,
  .essay-grid {
    grid-template-columns: 1fr;
  }

  /* Single column: the portrait sits after the first intro paragraph, the news at the end. */
  .home-layout {
    grid-template-rows: none;
  }

  .home-copy,
  #home-intro {
    display: contents;
  }

  #home-intro > p + p {
    margin-top: 1rem;
  }

  .home-layout > .photo-frame {
    grid-column: auto;
    grid-row: auto;
    order: 1;
    width: min(100%, 360px);
    margin: 1.3rem 0 0.3rem;
  }

  #home-intro > p + p,
  #home-contact,
  #home-links {
    order: 2;
  }

  .home-side {
    grid-column: auto;
    grid-row: auto;
    order: 3;
    max-width: 420px;
    margin-top: 1.4rem;
  }
}

/* Very narrow phones (for example 320 px): keep the name and the language switch on one row. */
@media (max-width: 340px) {
  .nav-shell {
    column-gap: 0.6rem;
  }

  .language-switch button {
    padding-inline: 0.55rem;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
  }

  .site-nav {
    gap: 0.3rem 0.95rem;
  }

  .brand {
    font-size: 1.12rem;
  }

  .home-copy h1 {
    font-size: clamp(1.4rem, 7.8vw, 1.85rem);
  }

  .page-shell {
    padding-bottom: 3rem;
  }

  .home-shell {
    padding-top: 0.75rem;
  }

  .contact-list {
    gap: 0.4rem 0.75rem;
  }

  .entry-top {
    flex-direction: column;
    gap: 0.6rem;
  }

  .photo-frame {
    border-radius: 22px;
  }

  .image-gallery {
    gap: 0.5rem;
  }

  .image-gallery-button {
    border-radius: 10px;
  }

  .image-lightbox {
    grid-template-columns: 1fr 1fr;
    align-content: center;
    gap: 0.9rem;
  }

  .image-lightbox-frame {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .image-lightbox-image {
    max-width: 92vw;
    max-height: 72vh;
    border-radius: 13px;
  }

  .image-lightbox-previous {
    justify-self: end;
  }

  .image-lightbox-next {
    justify-self: start;
  }
}