*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --ink: #1a1917;
  --ink-muted: #6b6860;
  --ink-faint: #b8b5ae;
  --paper: #f7f5f0;
  --paper-warm: #eeebe3;
  --rule: #dedad2;
  --accent: #c84b2f;
  --mono: 'DM Mono', monospace;
  --serif: 'DM Serif Display', serif;
  --sans: 'Instrument Sans', sans-serif;
  --content-width: 1080px;
  --page-padding: 3rem;
  --radius: 12px;
  --timeline-year-width: 100px;
  --timeline-axis-left: 120px;
  --timeline-cards-offset: 140px;
  --timeline-date-width: 88px;
}

html {
  scroll-behavior: auto;
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a,
button,
input,
textarea {
  font: inherit;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  height: 56px;
  padding: 0 var(--page-padding);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.nav-inner {
  width: min(100%, var(--content-width));
  display: flex;
  align-items: flex-end;
  height: 100%;
}

.nav-links {
  flex: 1;
  display: flex;
  justify-content: flex-start;
  gap: 0;
  list-style: none;
}

.lang-toggle {
  align-self: center;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: transparent;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color 0.2s;
}

.lang-toggle:hover {
  border-color: var(--accent);
}

.lang-toggle .lang-option {
  color: var(--ink-muted);
  transition: color 0.2s;
}

.lang-toggle .lang-option.active {
  color: var(--accent);
  font-weight: 500;
}

.lang-toggle .lang-separator {
  color: var(--rule);
  margin: 0 0.35rem;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 0.85rem;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

.nav-links a:hover {
  color: var(--ink);
  background: var(--paper-warm);
  border-color: var(--rule);
}

.nav-links a.active,
.nav-links a[aria-current="page"] {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--rule);
  border-top: 2px solid var(--accent);
  border-bottom: 1px solid var(--paper);
  margin-bottom: -1px;
}

#inicio,
.work-controls,
#trabajo,
#mas-alla {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-left: var(--page-padding);
  padding-right: var(--page-padding);
}

#inicio {
  min-height: calc(100vh - 56px);
  display: flex;
  align-items: center;
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.hero-grid {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 1fr);
  gap: 3rem;
}

.hero-name-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.hero-name-compact {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 4.5vw, 3.8rem);
  line-height: 1.08;
  font-weight: 400;
  margin-bottom: 1.5rem;
}

.hero-name-compact::after {
  content: '';
  display: block;
  width: 2.25rem;
  height: 2px;
  margin-top: 0.85rem;
  background: var(--accent);
}

.hero-subtitle {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
}

.linkedin-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  margin-top: 0.5rem;
  border: 1px solid var(--ink-muted);
  border-radius: 4px;
  background: transparent;
  color: var(--ink-muted);
  text-decoration: none;
  transition: all 0.2s ease;
}

.linkedin-button:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--paper-warm);
}

.hero-bio {
  max-width: 44ch;
  margin-bottom: 0.65rem;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-muted);
}

.methodology-brief {
  max-width: 48ch;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}

.method-intro {
  margin-bottom: 0.9rem;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
}

.method-list-compact {
  list-style: none;
  counter-reset: method-counter;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.method-list-compact li {
  counter-increment: method-counter;
  position: relative;
  padding-left: 2.75rem;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-muted);
}

.method-list-compact li::before {
  content: counter(method-counter, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
}

.hero-right {
  display: flex;
  align-items: center;
  align-self: center;
}

.contact-sidebar {
  width: 100%;
  padding: 1.5rem;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.contact-block-sidebar + .contact-block-sidebar {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

.contact-form-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.contact-form-sidebar input,
.contact-form-sidebar textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
}

.contact-form-sidebar textarea {
  min-height: 72px;
  resize: vertical;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: var(--paper);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  cursor: pointer;
}

.btn-small {
  align-self: flex-start;
}

.contact-links-sidebar {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.contact-link-sidebar {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.contact-link-sidebar:hover {
  border-color: var(--ink-muted);
  color: var(--ink);
}

.contact-icon {
  flex-shrink: 0;
}

.work-controls {
  margin-top: 3rem;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.work-switchbar,
.article-filterbar {
  padding: 0.95rem 1.15rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.work-switchbar {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  background: var(--paper-warm);
}

.article-filterbar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.55);
}

.view-btn,
.filter-btn,
.toggle-btn {
  cursor: pointer;
}

.view-btn,
.filter-btn {
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
}

.view-btn[data-view="mas-alla"] {
  margin-left: auto;
}

.view-btn:hover,
.view-btn.active {
  color: var(--ink);
  background: var(--paper);
}

.filter-btn.active {
  box-shadow: inset 0 0 0 1px currentColor;
}

.filter-btn[data-filter="all"] {
  background: var(--paper);
}

.filter-btn[data-filter="all"].active {
  color: var(--ink);
}

.filter-btn[data-filter="datos"] {
  background: #d9e9ff;
  color: #134a88;
  border-color: rgba(19, 74, 136, 0.18);
}

.filter-btn[data-filter="desinfo"] {
  background: #f8d9d4;
  color: #9d2f20;
  border-color: rgba(157, 47, 32, 0.18);
}

.filter-btn[data-filter="verificacion"] {
  background: #fde5c4;
  color: #8c4510;
  border-color: rgba(140, 69, 16, 0.18);
}

.filter-btn[data-filter="contexto"] {
  background: #dfe8de;
  color: #4e6550;
  border-color: rgba(78, 101, 80, 0.18);
}

#trabajo {
  padding-bottom: 5rem;
}

.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--timeline-axis-left);
  width: 1px;
  background: var(--rule);
}

.timeline-year-group {
  position: relative;
  padding-left: var(--timeline-cards-offset);
  margin-bottom: 3rem;
}

.timeline-year {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--timeline-year-width);
  padding-top: 1.3rem;
  text-align: right;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}

.timeline-year::after {
  content: '';
  position: absolute;
  top: 1.48rem;
  right: -23px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-faint);
}

.year-articles {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 1.9rem;
}

.article-card-exp {
  position: relative;
  overflow: visible;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  border-left: none;
  border-right: none;
  margin-bottom: -1px;
}

.article-card-exp.hidden,
.timeline-year-group.hidden {
  display: none;
}

.card-top {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: start;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
}

.card-top::before {
  content: '';
  position: absolute;
  left: -23px;
  top: 1.55rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--ink-faint);
}

.article-card-exp.open .card-top {
  background: var(--paper-warm);
}

.article-card-exp.open .card-top::before {
  background: var(--accent);
  border-color: var(--accent);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.55rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
}

.badge-datos {
  background: #d9e9ff;
  color: #134a88;
}

.badge-desinfo {
  background: #f8d9d4;
  color: #9d2f20;
}

.badge-verificacion {
  background: #fde5c4;
  color: #8c4510;
}

.badge-contexto {
  background: #dfe8de;
  color: #4e6550;
}

.article-date {
  position: absolute;
  top: 1.3rem;
  left: -128px;
  width: var(--timeline-date-width);
  text-align: right;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
}

.article-title {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.42;
  color: var(--ink);
}

.article-title + .article-title {
  display: none;
}

.toggle-btn {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 3px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: transparent;
  color: var(--ink-muted);
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
}

.article-card-exp.open .toggle-btn {
  transform: rotate(45deg);
  color: var(--accent);
  border-color: var(--accent);
}

.card-panel {
  display: none;
  padding: 1.25rem 1.5rem 1.5rem;
  border-top: 1px solid var(--rule);
  background: var(--paper-warm);
}

.article-card-exp.open .card-panel {
  display: block;
}

.panel-text-main {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1.15rem;
}

.panel-text {
  font-size: 13px;
  line-height: 1.68;
  color: var(--ink);
}

.panel-text a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
  transition: color 0.2s;
}

.panel-text a:hover {
  color: var(--ink);
}

.panel-techniques {
  flex: 1 1 320px;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--ink-faint);
}

.panel-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.panel-links-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  justify-content: flex-end;
}

.card-read-link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}

.card-read-link:hover {
  color: var(--ink);
  text-decoration: underline;
}

#mas-alla {
  padding-bottom: 4rem;
}

.beyond-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.beyond-item {
  padding: 1.75rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.35);
}

.beyond-title {
  font-family: var(--serif);
  font-size: 1.1rem;
  line-height: 1.3;
}

.beyond-title::after {
  content: '';
  display: block;
  width: 1.5rem;
  height: 2px;
  margin-top: 0.5rem;
  margin-bottom: 0.85rem;
  background: var(--accent);
}

.beyond-list {
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.beyond-list li,
.beyond-copy {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-muted);
}

.beyond-copy {
  margin-top: 0.95rem;
}

.beyond-copy strong {
  color: var(--ink);
}

.beyond-copy a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.14em;
  transition: color 0.2s;
}

.beyond-copy a:hover {
  color: var(--ink);
}

@media (max-width: 768px) {
  :root {
    --page-padding: 1.25rem;
  }

  nav {
    padding: 0 var(--page-padding);
  }

  .nav-links {
    gap: 1.25rem;
  }

  #inicio {
    min-height: auto;
    padding-top: 2rem;
    padding-bottom: 2.5rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .hero-name-compact {
    font-size: 2.1rem;
  }

  .hero-bio,
  .method-list-compact li,
  .contact-link-sidebar {
    font-size: 13px;
  }

  .contact-sidebar {
    padding: 1.2rem;
  }

  .work-controls {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
    padding-left: 0;
    padding-right: 0;
  }

  .work-switchbar,
  .article-filterbar {
    padding: 0.85rem 0.9rem;
    border-radius: 10px;
  }

  .work-switchbar {
    gap: 0.4rem;
  }

  .view-btn[data-view="mas-alla"] {
    margin-left: 0;
  }

  #trabajo,
  #mas-alla {
    padding-bottom: 3rem;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-year-group {
    padding-left: 1.5rem;
  }

  .timeline-year {
    position: static;
    width: auto;
    padding-top: 0;
    margin-bottom: 0.5rem;
    text-align: left;
  }

  .timeline-year::after {
    left: -1px;
    right: auto;
    top: 0.35rem;
  }

  .year-articles {
    padding-top: 0;
  }

  .article-date {
    position: static;
    width: auto;
    text-align: left;
  }

  .card-top::before {
    display: none;
  }

  .panel-bottom,
  .panel-links-group {
    justify-content: flex-start;
  }

  .beyond-grid {
    grid-template-columns: 1fr;
  }

  .beyond-item {
    padding: 1.35rem;
  }
}