/* Home page (layout: onepage). */

:root {
  --accent: rgb(27, 46, 129);          /* headings, rules, bullets */
  --accent-soft: rgb(235, 238, 248);   /* hover and active backgrounds */
  --link: rgb(83, 69, 218);
  --link-strong: rgb(60, 48, 165);     /* links on the grey presentation block */
  --surface: rgb(248, 249, 250);       /* navigation bar and presentation block */
  --border: rgb(225, 228, 232);
  --text: #222;
  --text-light: #5f6368;

  /* Publication types */
  --pub-journal: #1f5fbf;
  --pub-journal-bg: #e8f0fc;
  --pub-conference: #7a3db8;
  --pub-conference-bg: #f3ebfb;
  --pub-preprint: #9a5800;
  --pub-preprint-bg: #fdf1e1;
  --pub-patent: #b3261e;
  --pub-patent-bg: #fbe9e7;
  --pub-software: #0b7a75;
  --pub-software-bg: #e0f3f2;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: #fff;
  color: var(--text);
  font-family: Georgia, serif;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px;
}

/* Top navigation
   ========================================================================== */

.top-nav {
  background-color: var(--surface);
  border-bottom: 2px solid var(--accent);
  padding: 10px 0;
  margin-bottom: 20px;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.nav-section {
  margin-bottom: 10px;
}

.nav-section:last-child {
  margin-bottom: 0;
}

.nav-section h3 {
  display: inline-block;
  margin: 0 15px 5px 0;
  font-size: 1.1em;
  color: var(--accent);
}

.nav-section ul {
  display: inline;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-section li {
  display: inline-block;
  margin-right: 15px;
}

.nav-section a {
  color: var(--accent);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-section a:hover {
  color: var(--link);
}

/* Title and presentation
   ========================================================================== */

.main h1 {
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
  color: var(--accent);
}

.presentation {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin: 20px 0;
  padding: 15px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.presentation img {
  flex-shrink: 0;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.presentation p {
  margin: 0;
  font-size: 1em;
  line-height: 1.6;
}

.presentation a {
  color: var(--link-strong);
  text-decoration: none;
}

.presentation a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .presentation {
    flex-direction: column;
    align-items: center;
  }
}

/* Sections
   ========================================================================== */

.section {
  margin: 25px 0;
  padding: 15px 0;
  scroll-margin-top: 10px;
}

.section h2 {
  margin: 0 0 15px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--accent);
  color: var(--accent);
  font-size: 1.6em;
}

.section p {
  margin-bottom: 10px;
  line-height: 1.6;
}

.section > ul {
  margin: 0;
  padding-left: 20px;
}

.section > ul li {
  margin: 10px 0;
  line-height: 1.5;
  list-style-type: disc;
}

.section > ul li::marker {
  color: var(--accent);
}

.section > ul ul {
  padding-left: 20px;
}

.section a {
  color: var(--link);
  text-decoration: none;
}

.section a:hover {
  text-decoration: underline;
}

.disclaimer {
  color: var(--text-light);
  font-style: italic;
}

.footer {
  margin-top: 40px;
  padding: 15px 0;
  border-top: 1px solid var(--border);
  color: var(--text-light);
  font-size: 0.85em;
}

/* Publications: themes on the left, list on the right
   ========================================================================== */

.research {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5em;
}

.research-nav,
.research-content {
  min-width: 0;
}

@media (min-width: 925px) {
  .research {
    grid-template-columns: 15em minmax(0, 1fr);
    gap: 2.5em;
  }

  .research-nav {
    position: sticky;
    top: 1em;
    align-self: start;
    max-height: calc(100vh - 2em);
    overflow-y: auto;
  }
}

.research-nav__heading {
  margin: 0 0 0.6em;
  color: var(--text-light);
  font-size: 0.8em;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-nav__heading ~ .research-nav__heading {
  margin-top: 2em;
}

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

.research-nav li {
  margin: 0;
}

/* On small screens the themes wrap as chips above the list */
.research-nav__list,
.research-nav__types {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em;
}

.research-nav__link {
  display: flex;
  justify-content: space-between;
  gap: 0.75em;
  padding: 0.4em 0.8em;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--accent) !important;
  line-height: 1.3;
  text-decoration: none !important;
}

.research-nav__link:hover,
.research-nav__link.is-active {
  background: var(--accent-soft);
}

.research-nav__link.is-active {
  font-weight: bold;
  border-color: var(--accent);
}

.research-nav__count {
  color: var(--text-light);
  font-weight: normal;
  font-variant-numeric: tabular-nums;
}

@media (min-width: 925px) {
  .research-nav__list {
    display: block;
    border-left: 1px solid var(--border);
  }

  .research-nav__link {
    margin-left: -1px;
    padding: 0.5em 0 0.5em 1em;
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0;
  }

  .research-nav__link:hover {
    background: transparent;
    border-left-color: var(--border);
  }

  .research-nav__link.is-active {
    background: transparent;
    border-left-color: var(--accent);
  }

  .research-nav__types {
    flex-direction: column;
  }
}

.type-toggle {
  display: flex;
  align-items: center;
  gap: 0.5em;
  width: 100%;
  padding: 0.4em 0.7em;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95em;
  text-align: left;
  cursor: pointer;
}

.type-toggle .research-nav__count {
  margin-left: auto;
}

.type-toggle[aria-pressed="false"] {
  opacity: 0.45;
}

.type-toggle[aria-pressed="false"] .type-toggle__dot {
  background: transparent;
}

.type-toggle:focus-visible,
.research-nav__link:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.type-toggle__dot {
  flex: none;
  width: 0.8em;
  height: 0.8em;
  border: 2px solid var(--pub-color);
  border-radius: 50%;
  background: var(--pub-color);
}

.type-toggle--journal    { --pub-color: var(--pub-journal); }
.type-toggle--conference { --pub-color: var(--pub-conference); }
.type-toggle--preprint   { --pub-color: var(--pub-preprint); }
.type-toggle--patent     { --pub-color: var(--pub-patent); }
.type-toggle--software   { --pub-color: var(--pub-software); }

.research-header {
  margin-bottom: 1em;
  padding-bottom: 0.8em;
  border-bottom: 1px solid var(--border);
}

.research-header__title {
  margin: 0 0 0.3em;
  color: var(--accent);
  font-size: 1.3em;
}

.section .research-header__desc {
  max-width: 45em;
  margin: 0 0 0.3em;
}

.section .research-header__count {
  margin: 0;
  color: var(--text-light);
  font-size: 0.85em;
}

.pub-year__title {
  margin: 1.4em 0 0.6em;
  padding-bottom: 0.2em;
  border-bottom: 1px solid var(--accent);
  color: var(--accent);
  font-size: 1.3em;
}

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

.pub {
  margin: 0 0 0.8em;
  padding: 0.7em 1em 0.7em 1.1em;
  border: 1px solid var(--border);
  border-left: 4px solid var(--pub-color);
  border-radius: 4px;
  line-height: 1.45;
}

.pub--journal    { --pub-color: var(--pub-journal);    --pub-bg: var(--pub-journal-bg); }
.pub--conference { --pub-color: var(--pub-conference); --pub-bg: var(--pub-conference-bg); }
.pub--preprint   { --pub-color: var(--pub-preprint);   --pub-bg: var(--pub-preprint-bg); }
.pub--patent     { --pub-color: var(--pub-patent);     --pub-bg: var(--pub-patent-bg); }
.pub--software   { --pub-color: var(--pub-software);   --pub-bg: var(--pub-software-bg); }

.pub__badge {
  display: inline-block;
  margin-bottom: 0.3em;
  padding: 0.05em 0.55em;
  border-radius: 999px;
  background: var(--pub-bg);
  color: var(--pub-color);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.75em;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.pub__title {
  font-weight: bold;
  overflow-wrap: anywhere;
}

.section .pub__title a {
  color: #1a0dab;
}

.pub__authors {
  color: var(--text-light);
  font-size: 0.92em;
}

.pub__authors strong {
  color: var(--text);
}

.pub__meta {
  font-size: 0.92em;
}

.section .pub__link {
  margin-left: 0.6em;
  font-weight: bold;
}

.pub__themes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35em;
  margin: 0.45em 0 0;
  padding: 0;
  list-style: none;
}

.pub__themes a {
  display: inline-block;
  padding: 0 0.55em;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-light) !important;
  font-size: 0.78em;
  text-decoration: none !important;
}

.pub__themes a:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

.research-empty {
  padding: 2em 0;
  color: var(--text-light);
}

[hidden] {
  display: none !important;
}

/* Selected publications (home page)
   ========================================================================== */

.selected-topic h3 {
  margin: 1.4em 0 0.6em;
  padding-bottom: 0.2em;
  border-bottom: 1px solid var(--accent);
  color: var(--accent);
  font-size: 1.25em;
}

.selected-topic:first-of-type h3 {
  margin-top: 0.5em;
}

.more-link {
  margin-top: 1.2em;
  font-weight: bold;
}

/* Research themes over the years (Publications page)
   ========================================================================== */

.timeline {
  position: relative;
  margin: 0 0 2.5em;
  padding: 1em 1.2em 0.8em;
  background: #fcfcfb;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.timeline__caption {
  margin-bottom: 0.8em;
  line-height: 1.5;
}

.timeline__caption strong {
  display: block;
  color: var(--accent);
  font-size: 1.15em;
}

.timeline__caption span {
  color: var(--text-light);
  font-size: 0.9em;
}

.timeline__chart svg {
  display: block;
  overflow: visible;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

.timeline__hit {
  fill: transparent;
}

.timeline__row {
  cursor: pointer;
  outline: none;
}

.timeline__row:hover .timeline__hit,
.timeline__row:focus-visible .timeline__hit {
  fill: var(--accent-soft);
}

.timeline__row:focus-visible .timeline__name {
  text-decoration: underline;
}

.timeline__name {
  fill: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.timeline__total,
.timeline__year {
  fill: #898781;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.timeline__peak {
  fill: #52514e;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.timeline__base {
  stroke: #c3c2b7;
  stroke-width: 1;
}

.timeline__bar {
  fill: var(--accent);
}

.timeline__col {
  fill: transparent;
}

.timeline__col:hover {
  fill: rgba(27, 46, 129, 0.06);
}

.timeline__tooltip {
  position: absolute;
  z-index: 2;
  padding: 0.4em 0.7em;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.82em;
  line-height: 1.4;
  pointer-events: none;
  white-space: nowrap;
}

.timeline__table {
  margin-top: 0.6em;
  font-size: 0.85em;
}

.timeline__table summary {
  color: var(--link);
  cursor: pointer;
}

.timeline__table-scroll {
  overflow-x: auto;
}

.timeline__table table {
  border-collapse: collapse;
  margin-top: 0.5em;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-variant-numeric: tabular-nums;
}

.timeline__table th,
.timeline__table td {
  padding: 0.2em 0.45em;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
}

.timeline__table th[scope="row"] {
  text-align: left;
}

.presentation__text ul {
  margin: 0 0 0.8em;
  padding-left: 1.2em;
  line-height: 1.6;
}

.presentation__text li {
  margin: 0.15em 0;
}

.presentation__text li::marker {
  color: var(--accent);
}

.presentation__text p + p {
  margin-top: 0.8em;
}

.cv-heading {
  margin: 1.3em 0 0.4em;
  color: var(--accent);
  font-size: 1.2em;
}

.section h2 + .cv-heading {
  margin-top: 0.4em;
}

.section .cv-heading + ul {
  margin: 0;
  padding-left: 20px;
}

.section .cv-heading + ul > li {
  margin: 8px 0;
  line-height: 1.5;
}

.section .cv-heading + ul > li::marker {
  color: var(--accent);
}

/* PhD students page
   ========================================================================== */

.students-scroll {
  overflow-x: auto;
}

.students {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95em;
  line-height: 1.45;
}

.students th,
.students td {
  padding: 0.6em 0.7em;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.students thead th {
  border-bottom: 2px solid var(--accent);
  color: var(--accent);
  font-size: 0.85em;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.students tbody th {
  font-weight: bold;
  white-space: nowrap;
}

.students__dates {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.students__meta {
  margin-top: 0.2em;
  color: var(--text-light);
  font-size: 0.88em;
}

.students__missing {
  color: var(--text-light);
  font-style: italic;
}