/* ============================================================
   DOSSIER ACADÉMICO — Estilos principales
   Diseño: Minimalista, editorial, tipografía serif+sans
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ── Variables ───────────────────────────────────────────── */
:root {
  --ink:       #1a1a1a;
  --ink-light: #5a5a5a;
  --ink-faint: #9a9a9a;
  --paper:     #faf9f7;
  --paper-2:   #f0ede8;
  --paper-3:   #e8e4dd;
  --accent:    #2d5a4e;
  --accent-2:  #8b3a2f;
  --rule:      #d8d3cc;
  --card-bg:   #ffffff;

  --font-serif: 'EB Garamond', Georgia, serif;
  --font-sans:  'DM Sans', system-ui, sans-serif;

  --max-w: 1100px;
  --nav-h: 68px;
  --gap:   2rem;
  --radius: 3px;
  --transition: 200ms ease;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  text-align: justify;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* Elements that should NOT be justified */
h1, h2, h3, h4, h5, h6,
.nav-brand, .nav-links, .nav-links a,
.page-subtitle, .level-label,
.home-title, .home-name, .home-institution,
.member-name, .member-position,
.course-code, .course-name, .course-header,
.pub-year, .pub-type-badge, .pub-links,
.social-icons, .social-btn,
.member-links, .member-link,
.pub-link, .topic-header h3,
.footer-name, .footer-role, .footer-bottom,
.footer-links-col h4, .footer-link-list,
.other-interests-list, .group-meta,
.section-rule,
.interest-card-title, .interest-section h3 { text-align: left; }

/* ── Layout helpers ──────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.section { padding: 5rem 0; }
.section + .section { border-top: 1px solid var(--rule); }

/* ── Navigation ──────────────────────────────────────────── */
#nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
  background: var(--paper-2);
}
.nav-links a.active { color: var(--accent); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  border: none;
  background: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: all 200ms;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Section headings ─────────────────────────────────────── */
.page-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 0.5rem;
}
.page-subtitle {
  font-size: 0.9rem;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 3rem;
}
.section-rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.section-rule h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  white-space: nowrap;
}
.section-rule::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ── Home page ────────────────────────────────────────────── */
#home {
  padding-top: calc(var(--nav-h) + 4rem);
  padding-bottom: 5rem;
  min-height: calc(100vh - var(--nav-h));
}
.home-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 5rem;
  align-items: start;
}
.home-photo-col { position: sticky; top: calc(var(--nav-h) + 2rem); }
.home-photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  filter: grayscale(15%);
  border: 1px solid var(--rule);
}
.home-photo-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--paper-3);
  border: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-faint);
  font-size: 0.8rem;
}
.home-name {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}
.home-title {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.25rem;
  font-weight: 500;
}
.home-institution {
  font-size: 0.85rem;
  color: var(--ink-light);
  margin-bottom: 2.5rem;
}
.home-bio {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--ink);
  margin-bottom: 2.5rem;
  max-width: 60ch;
}
.home-contact h3 {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1rem;
  font-weight: 500;
}
.contact-list { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.contact-list li { display: flex; align-items: center; gap: 0.75rem; font-size: 0.88rem; }
.contact-icon { width: 16px; height: 16px; color: var(--ink-light); flex-shrink: 0; }
.contact-list a { color: var(--ink-light); transition: color var(--transition); }
.contact-list a:hover { color: var(--accent); }

.social-icons {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink-light);
  border: 1px solid var(--rule);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.social-btn:hover {
  color: var(--ink);
  border-color: var(--ink-light);
  background: var(--paper-2);
}

/* ── Research page header with image ─────────────────────── */
.research-page-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
}
.research-header-text { max-width: 50ch; }
.research-header-text .page-title { margin-bottom: 0; }
.research-header-media {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
.research-header-img {
  width: 560px;
  max-width: 48vw;
  height: auto;
  display: block;
  border: 1px solid var(--rule);
  background: var(--paper-2);
}

/* ── Group page header — imagen al lado del texto ────────── */
#section-group .research-page-header {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 3rem;
  align-items: start;
}

#section-group .research-header-text {
  max-width: 65ch;
}

#section-group .research-header-media {
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

#section-group .research-header-img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border: 1px solid var(--rule);
}

/* ── Interests page header — sin imagen lateral ──────────── */
#section-interests .research-page-header {
  grid-template-columns: 1fr 1fr;   /* texto | imagen */
  gap: 3rem;
  align-items: center;              /* centra verticalmente */
}

#section-interests .research-header-text {
  max-width: 100%;
}

#section-interests .research-header-media {
  display: flex;                    /* ya no está oculto */
  justify-content: flex-end;
  align-items: center;
}

#section-interests .research-header-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rule);
}

/* ── Publications ────────────────────────────────────────── */
.topic-block { margin-bottom: 4rem; }
.topic-header {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  margin-bottom: 2rem;
}
.topic-header h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.25rem;
}
.topic-header p { font-size: 0.88rem; color: var(--ink-light); }

.pub-list { display: flex; flex-direction: column; gap: 1.25rem; }
.pub-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
}
.pub-year {
  font-size: 0.8rem;
  color: var(--ink-faint);
  font-weight: 500;
  padding-top: 2px;
}
.pub-authors { font-size: 0.85rem; color: var(--ink-light); margin-bottom: 0.2rem; }
.pub-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--ink);
}
.pub-venue { font-size: 0.82rem; color: var(--ink-faint); font-style: italic; }
.pub-links { margin-top: 0.4rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.pub-link {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid currentColor;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  transition: all var(--transition);
}
.pub-link:hover { background: var(--accent); color: white; }
.pub-type-badge {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--paper-3);
  color: var(--ink-light);
  padding: 0.1rem 0.45rem;
  border-radius: 2px;
  margin-left: 0.5rem;
}

/* Talks */
.talk-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1rem;
}
.talk-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}
.talk-venue { font-size: 0.85rem; color: var(--ink-light); }
.talk-location { font-size: 0.82rem; color: var(--ink-faint); }

/* ── Group page ───────────────────────────────────────────── */
.group-intro {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 65ch;
  margin-bottom: 3rem;
  color: var(--ink);
}
.group-meta {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.group-meta-item { font-size: 0.82rem; }
.group-meta-label { color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.08em; display: block; margin-bottom: 0.1rem; font-size: 0.72rem; }
.group-meta-value { color: var(--ink); font-weight: 500; }

.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(440px, 1fr));
  gap: 1.5rem;
}
.member-card {
  background: var(--card-bg);
  border: 1px solid var(--rule);
  padding: 1.5rem;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.member-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border-color: var(--paper-3);
}
.member-header { display: flex; gap: 1rem; margin-bottom: 1.25rem; align-items: flex-start; }
.member-photo {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--rule);
  flex-shrink: 0;
}
.member-photo-placeholder {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--paper-3);
  border: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--ink-faint);
  flex-shrink: 0;
}
.member-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.15rem;
}
.member-position {
  font-size: 0.75rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.15rem;
}
.member-formation { font-size: 0.8rem; color: var(--ink-light); line-height: 1.4; }
.member-desc { font-size: 0.83rem; color: var(--ink-light); line-height: 1.6; margin-bottom: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--rule); }
.member-email { font-size: 0.82rem; color: var(--ink-light); margin-bottom: 1rem; }
.member-email a:hover { color: var(--accent); }
.member-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--rule);
}
.member-link {
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-light);
  border: 1px solid var(--rule);
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
  transition: all var(--transition);
  font-weight: 500;
}
.member-link:hover { color: var(--accent); border-color: var(--accent); background: rgba(45, 90, 78, 0.04); }

/* ── Teaching page ────────────────────────────────────────── */
.level-label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 4rem;
}
.course-card {
  background: var(--card-bg);
  border: 1px solid var(--rule);
  padding: 1.5rem;
  transition: box-shadow var(--transition);
}
.course-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
.course-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; gap: 0.5rem; }
.course-code { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); font-weight: 500; }
.course-credits { font-size: 0.72rem; color: var(--ink-faint); white-space: nowrap; }
.course-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}
.course-desc { font-size: 0.85rem; color: var(--ink-light); line-height: 1.6; }
.course-footer { margin-top: 1rem; padding-top: 0.75rem; border-top: 1px solid var(--rule); font-size: 0.78rem; color: var(--ink-faint); }

/* ── Interests page ───────────────────────────────────────── */
.interests-intro {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.75;
  max-width: 65ch;
  margin-bottom: 3.5rem;
  color: var(--ink);
}
.interest-section { margin-bottom: 3.5rem; }
.interest-section h3 {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  margin-bottom: 2rem;
}
.interests-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.interest-card {
  background: var(--card-bg);
  border: 1px solid var(--rule);
  padding: 1.5rem;
}
.interest-card-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.interest-card-title::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.interest-card-desc { font-size: 0.85rem; color: var(--ink-light); line-height: 1.6; }

.other-interests-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.other-interest-tag {
  font-size: 0.82rem;
  color: var(--ink-light);
  border: 1px solid var(--rule);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  background: var(--card-bg);
}

/* ── Footer ───────────────────────────────────────────────── */
footer {
  margin-top: auto;
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding: 3rem 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}
.footer-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: white;
  margin-bottom: 0.4rem;
}
.footer-role { font-size: 0.8rem; color: rgba(255,255,255,0.45); }
.footer-links-col h4 {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 0.75rem;
  font-weight: 500;
}
.footer-link-list { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.footer-link-list a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-link-list a:hover { color: rgba(255,255,255,0.9); }
.footer-message {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-style: italic;
  color: rgba(255,255,255,0.4);
  line-height: 1.6;
}
.footer-bottom {
  max-width: var(--max-w);
  margin: 2rem auto 0;
  padding: 1.5rem 2rem 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.25);
  display: flex;
  justify-content: space-between;
}

/* ── Page sections visibility ─────────────────────────────── */
.page-section { display: none; }
.page-section.active { display: block; }

/* ── Loading state ────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--paper-2) 25%, var(--paper-3) 50%, var(--paper-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--rule); padding: 1rem 2rem; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .home-grid { grid-template-columns: 1fr; gap: 2rem; }
  .home-photo-col { position: static; }
  .home-photo, .home-photo-placeholder { aspect-ratio: 1/1; max-width: 200px; }

  .research-page-header { grid-template-columns: 1fr; gap: 1.5rem; }
  .research-header-img { width: 100%; max-width: 100%; }

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .members-grid { grid-template-columns: 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .interests-cards { grid-template-columns: 1fr; }
  .section { padding: 3rem 0; }
}