/* ==========================================================
   ESTEBAN MORELLE-HUNGRÍA
   Academic website design system

   Typography hierarchy:
   - H1: page title, large and bold
   - H2: section title, bold
   - H3: subsection title, bold and italic
   - Body: regular, restrained and readable
   ========================================================== */


/* ----------------------------------------------------------
   Design tokens
   ---------------------------------------------------------- */

:root {
  --ink: #24282c;
  --text: #34393e;
  --muted: #697179;
  --faint: #8a9197;
  --line: #e2e5e7;
  --line-strong: #d4d9dc;
  --link: #326a98;
  --link-hover: #174d73;
  --paper: #ffffff;
  --soft: #f7f8f9;

  --font-main:
    "IBM Plex Sans",
    "Helvetica Neue",
    Arial,
    sans-serif;

  --page-width: 1360px;
  --reading-width: 740px;
  --toc-width: 180px;

  --text-small: 0.875rem;
  --text-base: 1rem;
  --text-intro: clamp(1.02rem, 0.98rem + 0.18vw, 1.1rem);
  --text-subtitle: clamp(1.05rem, 1rem + 0.16vw, 1.12rem);
  --text-section: clamp(1.35rem, 1.25rem + 0.35vw, 1.55rem);
  --text-title: clamp(2.25rem, 1.85rem + 1.7vw, 3.15rem);

  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-xs: 0.4rem;
  --space-lg: 2rem;
  --space-xl: 3.25rem;
  --space-2xl: 4.5rem;
}


/* ----------------------------------------------------------
   Reset and base typography
   ---------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 2rem;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-main);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.72;
  letter-spacing: 0.002em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0;
  color: var(--ink);
  font-family: var(--font-main);
  text-wrap: balance;
}

h1 {
  font-size: var(--text-title);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h2 {
  font-size: var(--text-section);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.018em;
}

h3 {
  font-size: var(--text-subtitle);
  font-style: italic;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.008em;
}

p,
li {
  text-wrap: pretty;
}

p {
  max-width: 70ch;
}

strong {
  color: var(--ink);
  font-weight: 600;
}

em {
  font-style: italic;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
  transition:
    color 150ms ease,
    text-decoration-color 150ms ease,
    border-color 150ms ease,
    background-color 150ms ease;
}

a:hover,
a:focus-visible {
  color: var(--link-hover);
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
  border-radius: 2px;
}

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


/* ----------------------------------------------------------
   Accessibility
   ---------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: auto;
  left: -10000px;
}

.skip-link:focus {
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  font-size: var(--text-small);
  font-weight: 600;
  text-decoration: none;
}


/* ----------------------------------------------------------
   Shared site structure
   ---------------------------------------------------------- */

.header-inner,
.site-main,
.site-footer {
  width: min(calc(100% - 4rem), var(--page-width));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(2rem, 4vw, 3.75rem);
  min-height: 86px;
}

.university-brand {
  flex: none;
  color: var(--ink);
  text-decoration: none;
}

.university-logo {
  display: block;
  width: auto;
  height: 48px;
  max-width: 310px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 1.5rem;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  color: #444b51;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--link);
  text-decoration: underline;
}

.site-main {
  min-height: 78vh;
  padding-block: clamp(3rem, 6vw, 4.75rem) 5.5rem;
}

.site-footer {
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

.site-footer p {
  margin: 0;
}


/* ----------------------------------------------------------
   Shared interior-page layout
   Research, Publications, Teaching, Outreach and Extras
   ---------------------------------------------------------- */

:is(
  .research-page,
  .publications-page,
  .teaching-page,
  .outreach-page,
  .extras-page
) {
  display: grid;
  grid-template-columns:
    minmax(0, var(--reading-width))
    var(--toc-width);
  gap: clamp(3rem, 6vw, 5.5rem);
  justify-content: center;
  align-items: start;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) {
  min-width: 0;
}

:is(
  .research-intro,
  .publications-intro,
  .teaching-intro,
  .outreach-intro,
  .extras-intro
) {
  margin: 0 0 var(--space-xl);
  padding: 0;
  border: 0;
}

:is(
  .research-intro,
  .publications-intro,
  .teaching-intro,
  .outreach-intro,
  .extras-intro
) h1 {
  margin: 0 0 1rem;
  color: var(--ink);
  font-size: var(--text-title);
  font-style: normal;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

:is(
  .research-intro,
  .publications-intro,
  .teaching-intro,
  .outreach-intro,
  .extras-intro
) > p {
  max-width: 65ch;
  margin: 0;
  color: var(--muted);
  font-size: var(--text-intro);
  line-height: 1.68;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) section {
  scroll-margin-top: 2rem;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) section + section {
  margin-top: var(--space-xl);
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) section > h2 {
  margin: 0 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: var(--text-section);
  font-style: normal;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.018em;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) h3 {
  margin: 0 0 0.55rem;
  color: var(--ink);
  font-size: var(--text-subtitle);
  font-style: italic;
  font-weight: 700;
  line-height: 1.35;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) h3 a {
  color: var(--link);
  text-decoration: none;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) h3 a:hover,
:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) h3 a:focus-visible {
  color: var(--link-hover);
  text-decoration: underline;
}

:is(
  .research-content,
  .publications-content,
  .teaching-content,
  .outreach-content,
  .extras-content
) p {
  margin: 0 0 1.2rem;
}


/* ----------------------------------------------------------
   Shared table of contents
   ---------------------------------------------------------- */

:is(
  .research-toc,
  .publications-toc,
  .teaching-toc,
  .outreach-toc,
  .extras-toc
) {
  position: sticky;
  top: 2rem;
  min-width: 0;
  padding-left: 1rem;
  border-left: 1px solid var(--line);
  font-size: 0.84rem;
  line-height: 1.45;
}

:is(
  .research-toc,
  .publications-toc,
  .teaching-toc,
  .outreach-toc,
  .extras-toc
) > p {
  margin: 0 0 0.9rem;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

:is(
  .research-toc,
  .publications-toc,
  .teaching-toc,
  .outreach-toc,
  .extras-toc
) nav {
  display: grid;
  gap: 0.7rem;
}

:is(
  .research-toc,
  .publications-toc,
  .teaching-toc,
  .outreach-toc,
  .extras-toc
) a {
  display: block;
  color: var(--muted);
  text-decoration: none;
}

:is(
  .research-toc,
  .publications-toc,
  .teaching-toc,
  .outreach-toc,
  .extras-toc
) a:hover,
:is(
  .research-toc,
  .publications-toc,
  .teaching-toc,
  .outreach-toc,
  .extras-toc
) a:focus-visible {
  color: var(--link);
  text-decoration: underline;
}


/* ----------------------------------------------------------
   Home page
   ---------------------------------------------------------- */

.academic-home {
  display: grid;
  grid-template-columns: minmax(280px, 390px) minmax(0, 1fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}

.academic-profile {
  min-width: 0;
  text-align: center;
}

.academic-profile > img,
.profile-photo {
  display: block;
  width: 100%;
  max-width: 390px;
  height: auto;
  margin: 0 auto 2rem;
  border-radius: 2px;
}

.academic-profile h1 {
  margin: 0 0 0.85rem;
  color: var(--ink);
  font-size: clamp(1.8rem, 1.55rem + 0.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.academic-title {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 1rem;
  font-style: italic;
  font-weight: 600;
  line-height: 1.5;
}

.academic-address {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 0.92rem;
  font-style: normal;
  line-height: 1.7;
}

.academic-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
}

.academic-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: #5f676d;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
}

.academic-links a:hover,
.academic-links a:focus-visible {
  border-color: var(--link);
  color: var(--link);
}

.academic-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 165px;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
  min-width: 0;
}

.academic-reading {
  min-width: 0;
}

.academic-reading section {
  scroll-margin-top: 2rem;
}

.academic-reading section + section {
  margin-top: var(--space-xl);
}

.academic-reading h2 {
  margin: 0 0 1.4rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: var(--text-section);
  font-style: normal;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.018em;
}

.academic-reading h3 {
  margin: 1.6rem 0 0.55rem;
  color: var(--ink);
  font-size: var(--text-subtitle);
  font-style: italic;
  font-weight: 700;
  line-height: 1.35;
}

.academic-reading p,
.academic-reading ul {
  margin: 0 0 1.2rem;
}

.academic-reading ul {
  padding-left: 1.25rem;
}

.academic-reading li + li {
  margin-top: 0.55rem;
}

.reference-list {
  padding-left: 0 !important;
  list-style: none;
}

.reference-list li {
  margin-bottom: 1rem;
}

.academic-toc {
  position: sticky;
  top: 2rem;
  padding-left: 1rem;
  border-left: 1px solid var(--line);
  font-size: 0.84rem;
  line-height: 1.45;
}

.academic-toc p {
  margin: 0 0 0.9rem;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.academic-toc a {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--muted);
  text-decoration: none;
}

.academic-toc a:hover,
.academic-toc a:focus-visible {
  color: var(--link);
  text-decoration: underline;
}


/* ----------------------------------------------------------
   Research page
   ---------------------------------------------------------- */

.research-area + .research-area,
.research-project + .research-project {
  margin-top: 2.25rem;
}

.project-meta {
  margin-bottom: 0.55rem !important;
  color: var(--muted);
  font-size: var(--text-small);
  font-style: normal;
  line-height: 1.5;
}


/* ----------------------------------------------------------
   Publications page
   ---------------------------------------------------------- */

.publication-list {
  margin: 0;
  padding-left: 1.4rem;
}

.publication-list li {
  margin-bottom: 1.15rem;
  padding-left: 0.3rem;
}

.publication-list li::marker {
  color: var(--faint);
}


/* ----------------------------------------------------------
   Teaching page
   ---------------------------------------------------------- */

.teaching-group + .teaching-group,
.teaching-project + .teaching-project {
  margin-top: 2.35rem;
}

.teaching-programme {
  margin-bottom: 0.85rem !important;
  color: var(--muted);
  font-size: var(--text-small);
  font-style: italic;
  font-weight: 500;
}

.teaching-list {
  margin: 1rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.teaching-list li {
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--line);
}

.teaching-list strong {
  font-weight: 600;
}

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

.teaching-list a:hover,
.teaching-list a:focus-visible {
  text-decoration: underline;
}

.course-detail {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: var(--text-small);
  font-style: italic;
}


/* ----------------------------------------------------------
   Outreach page
   ---------------------------------------------------------- */

.outreach-item + .outreach-item {
  margin-top: 2.35rem;
  padding-top: 2.35rem;
  border-top: 1px solid var(--line);
}

.outreach-meta {
  margin-bottom: 0.75rem !important;
  color: var(--muted);
  font-size: var(--text-small);
  font-style: italic;
  font-weight: 500;
  line-height: 1.5;
}


/* ----------------------------------------------------------
   Extras page
   ---------------------------------------------------------- */

.extras-timeline {
  margin-top: 2rem;
  padding-left: 1.5rem;
  border-left: 1px solid var(--line-strong);
}

.timeline-item {
  position: relative;
  padding: 0 0 2.4rem 1.2rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  position: absolute;
  top: 0.42rem;
  left: -1.57rem;
  width: 0.65rem;
  height: 0.65rem;
  border: 2px solid var(--link);
  border-radius: 50%;
  background: var(--paper);
  content: "";
}

.timeline-label {
  margin-bottom: 0.35rem !important;
  color: var(--muted);
  font-size: 0.76rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.075em;
  line-height: 1.4;
  text-transform: uppercase;
}

.extras-link-list {
  display: grid;
  margin-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.extras-link {
  display: grid;
  grid-template-columns: minmax(145px, 0.7fr) minmax(0, 1.3fr);
  gap: 1.25rem;
  align-items: baseline;
  padding-block: 1rem;
  border-bottom: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}

.extras-link-name {
  color: var(--link);
  font-size: 0.96rem;
  font-style: italic;
  font-weight: 700;
}

.extras-link-description {
  color: var(--muted);
  font-size: var(--text-small);
  line-height: 1.55;
}

.extras-link:hover .extras-link-name,
.extras-link:focus-visible .extras-link-name {
  color: var(--link-hover);
  text-decoration: underline;
}

.extras-resource + .extras-resource,
.extras-network + .extras-network {
  margin-top: 2.35rem;
  padding-top: 2.35rem;
  border-top: 1px solid var(--line);
}

.resource-meta {
  margin-bottom: 0.75rem !important;
  color: var(--muted);
  font-size: var(--text-small);
  font-style: italic;
  font-weight: 500;
}


/* ----------------------------------------------------------
   Simple Markdown page fallback
   ---------------------------------------------------------- */

.site-main > h1 {
  max-width: var(--reading-width);
  margin: 0 auto 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  font-size: var(--text-title);
}

.site-main > h2,
.site-main > h3,
.site-main > p,
.site-main > ul,
.site-main > ol {
  max-width: var(--reading-width);
  margin-inline: auto;
}

.site-main > h2 {
  margin-top: 3rem;
}

.site-main > h3 {
  margin-top: 2rem;
}


/* ----------------------------------------------------------
   Tablet
   ---------------------------------------------------------- */

@media (max-width: 1050px) {
  .academic-home {
    grid-template-columns: minmax(250px, 330px) minmax(0, 1fr);
    gap: 3rem;
  }

  .academic-main {
    display: block;
  }

  .academic-toc {
    display: none;
  }
}

@media (max-width: 900px) {
  :is(
    .research-page,
    .publications-page,
    .teaching-page,
    .outreach-page,
    .extras-page
  ) {
    display: block;
    max-width: 760px;
    margin-inline: auto;
  }

  :is(
    .research-toc,
    .publications-toc,
    .teaching-toc,
    .outreach-toc,
    .extras-toc
  ) {
    display: none;
  }
}


/* ----------------------------------------------------------
   Mobile
   ---------------------------------------------------------- */

@media (max-width: 760px) {
  .header-inner,
  .site-main,
  .site-footer {
    width: min(calc(100% - 2rem), var(--page-width));
  }

  .header-inner {
    display: block;
    min-height: 0;
    padding-block: 1rem;
  }

  .university-logo {
    height: 38px;
    max-width: 255px;
  }

  .main-nav {
    margin-top: 0.8rem;
    gap: 0.15rem 1rem;
  }

  .main-nav a {
    min-height: 34px;
    font-size: 0.82rem;
  }

  .site-main {
    padding-block: 2.25rem 4rem;
  }

  .academic-home {
    display: block;
  }

  .academic-profile {
    width: 100%;
    max-width: 420px;
    margin: 0 auto 3.5rem;
  }

  .academic-profile > img,
  .profile-photo {
    width: 100%;
    max-width: 100%;
    margin-bottom: 1.8rem;
  }

  .academic-links {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .academic-links a {
    width: 100%;
    min-height: 44px;
    padding: 0.65rem 0.8rem;
    font-size: 0.88rem;
  }

  .academic-main {
    display: block;
  }

  .academic-toc {
    display: none;
  }

  :is(
    .research-intro,
    .publications-intro,
    .teaching-intro,
    .outreach-intro,
    .extras-intro
  ) {
    margin-bottom: 2.75rem;
  }

  :is(
    .research-content,
    .publications-content,
    .teaching-content,
    .outreach-content,
    .extras-content
  ) section + section {
    margin-top: 3rem;
  }

  .extras-link {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}


/* ----------------------------------------------------------
   Reduced motion
   ---------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

.academic-reading > section:first-child h2 {
  margin-top: 0;
}

.academic-reading .reference-list a {
  text-decoration-thickness: 1px;
}

.academic-reading .reference-list li {
  line-height: 1.7;
}