/* ─── Variables ──────────────────────────────────────────────────────────── */
:root {
  --bg:           #f0f4f8;
  --surface:      #ffffff;
  --primary:      #0d1b2a;
  --primary-mid:  #1a3a5c;
  --accent:       #1565c0;
  --accent-hover: #0d47a1;
  --accent-light: #e3f2fd;
  --text:         #1c1c2e;
  --text-muted:   #64748b;
  --border:       #e2e8f0;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.05);
  --shadow:       0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:    0 8px 24px rgba(0,0,0,.11);
  --radius:       10px;
  --radius-sm:    6px;
  --nav-h:        60px;
  --max-w:        1100px;
  --font:         "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ─── Reset / Base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Header ─────────────────────────────────────────────────────────────── */
.site-header {
  background: var(--primary);
  height: var(--nav-h);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 10px rgba(0,0,0,.3);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -.03em;
  text-decoration: none;
}
.site-title:hover { color: #90caf9; text-decoration: none; }

.site-nav { display: flex; gap: .2rem; }
.site-nav a {
  color: rgba(255,255,255,.7);
  font-size: .875rem;
  font-weight: 500;
  padding: .4rem .9rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: color .15s, background .15s;
}
.site-nav a:hover { color: #fff; background: rgba(255,255,255,.1); text-decoration: none; }
.site-nav a.active { color: #fff; background: rgba(255,255,255,.15); }
.lang-toggle {
  color: rgba(255,255,255,.7);
  font-size: .8rem;
  font-weight: 600;
  padding: .3rem .7rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,.3);
  background: transparent;
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
  letter-spacing: .04em;
  margin-left: .4rem;
}
.lang-toggle:hover { color: #fff; background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }

/* ─── Main / Footer ──────────────────────────────────────────────────────── */
.site-main { flex: 1; }
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,.5);
  font-size: .8rem;
  padding: 1.25rem 1.5rem;
  text-align: center;
  margin-top: 3rem;
}
.site-footer a { color: rgba(255,255,255,.7); }
.site-footer a:hover { color: #fff; }

/* ─── Homepage hero ──────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
  color: #fff;
  padding: 5rem 1.5rem 4rem;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.hero-name {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -.04em;
  margin-bottom: .4rem;
  line-height: 1.1;
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.75);
  font-weight: 400;
  margin-bottom: 1.5rem;
}
.hero-links { display: flex; gap: .75rem; flex-wrap: wrap; }
.hero-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  padding: .45rem 1rem;
  border-radius: 999px;
  font-size: .875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background .15s, border-color .15s;
}
.hero-link:hover { background: rgba(255,255,255,.22); border-color: rgba(255,255,255,.45); text-decoration: none; color: #fff; }

.home-content {
  max-width: var(--max-w);
  margin: 3rem auto;
  padding: 0 1.5rem;
}

/* ─── Language visibility ─────────────────────────────────────────────────── */
html[lang="es"] .lang-en { display: none; }
html[lang="en"] .lang-es { display: none; }

/* ─── CV / Academic Profile section ──────────────────────────────────────── */
.cv-section {
  max-width: var(--max-w);
  margin: 0 auto 4rem;
  padding: 0 1.5rem;
}
.cv-section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -.02em;
  margin-bottom: 1.75rem;
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
/* Metrics strip */
.cv-metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.cv-metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.cv-metric-val {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: .3rem;
}
.cv-metric-label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}
/* Narrative two-column */
.cv-narrative-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.cv-narrative-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.cv-narrative-block h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}
.cv-narrative-block p {
  font-size: .9rem;
  color: var(--text);
  line-height: 1.75;
  margin-bottom: .75rem;
}
.cv-narrative-block p:last-child { margin-bottom: 0; }
.cv-stat-line {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .75rem;
  margin: .75rem 0;
}
.cv-stat-chip {
  background: var(--accent-light);
  color: var(--accent);
  font-size: .8rem;
  font-weight: 600;
  padding: .2rem .65rem;
  border-radius: 99px;
}
.cv-stat-chip strong { font-weight: 800; }
/* Research pillars */
.cv-research-header {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: 1rem;
}
.cv-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.cv-pillar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.cv-pillar--2 { border-top-color: #7b1fa2; }
.cv-pillar--3 { border-top-color: #00695c; }
.cv-pillar h4 {
  font-size: .92rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: .75rem;
}
.cv-pillar p {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.cv-pillar p strong { color: var(--text); }
.cv-source {
  font-size: .78rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: .5rem;
}
.cv-source a { color: var(--text-muted); text-decoration: underline; }

/* ─── Page wrapper ───────────────────────────────────────────────────────── */
.page-wrapper {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}
.page-header { margin-bottom: 1.75rem; }
.page-header h1 {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -.035em;
  margin-bottom: .35rem;
}
.page-meta {
  font-size: .875rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1rem;
  align-items: center;
}
.page-meta strong { color: var(--text); }

/* ─── Publication stats strip ────────────────────────────────────────────── */
.pub-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .7rem 1.1rem;
  box-shadow: var(--shadow-sm);
  min-width: 110px;
  text-align: center;
}
.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -.03em;
  line-height: 1;
  display: block;
  margin-bottom: .2rem;
}
.stat-label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
}

/* ─── Clickable stat / category filter cards ─────────────────────────────── */
.stat-filter {
  cursor: pointer;
  position: relative;
  font-family: var(--font);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color .18s, background .18s, box-shadow .18s, transform .12s;
}
.stat-filter:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.stat-filter:active { transform: translateY(0); }
/* Dot indicator top-right */
.stat-filter::after {
  content: '';
  position: absolute;
  top: 6px; right: 6px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--border);
  transition: background .15s;
}
/* State 1 — excluded (red tint) */
.stat-filter[data-state="1"] { background: #fff5f5; border-color: #e53935; }
.stat-filter[data-state="1"] .stat-value { color: #e53935; }
.stat-filter[data-state="1"] .stat-label { color: #e5393580; }
.stat-filter[data-state="1"]::after { background: #e53935; }
/* State 2 — only (solid accent) */
.stat-filter[data-state="2"] { background: var(--accent); border-color: var(--accent); box-shadow: var(--shadow); }
.stat-filter[data-state="2"] .stat-value { color: #fff; }
.stat-filter[data-state="2"] .stat-label { color: rgba(255,255,255,.8); }
.stat-filter[data-state="2"]::after { background: rgba(255,255,255,.9); }

/* ─── Filter controls ────────────────────────────────────────────────────── */
.pub-controls {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem 1rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.pub-controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  align-items: flex-end;
}
.control-group {
  display: flex;
  flex-direction: column;
  gap: .28rem;
  min-width: 130px;
}
.control-group.grow { flex: 1 1 200px; }
.control-group.narrow { min-width: 90px; }
.control-group label {
  font-size: .7rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .055em;
}
input[type="text"],
input[type="number"],
select {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .42rem .75rem;
  font-size: .875rem;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  width: 100%;
  transition: border-color .15s, box-shadow .15s, background .15s;
  -webkit-appearance: none;
  appearance: none;
}
input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(21,101,192,.14);
  background: #fff;
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .65rem center;
  padding-right: 2rem;
}
.checkbox-wrap {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding-bottom: .42rem;
  font-size: .875rem;
  cursor: pointer;
  white-space: nowrap;
  margin-top: auto;
}
.checkbox-wrap input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
  border: none;
  background: none;
  box-shadow: none;
}

.controls-footer {
  margin-top: .85rem;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
}
.pub-summary {
  font-size: .84rem;
  color: var(--text-muted);
}
.btn-reset {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .28rem .65rem;
  font-size: .78rem;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  transition: all .15s;
}
.btn-reset:hover { border-color: var(--accent); color: var(--accent); }

/* ─── Publication list ───────────────────────────────────────────────────── */
.pub-list { display: flex; flex-direction: column; gap: .8rem; }

/* ─── Publication card ───────────────────────────────────────────────────── */
.pub-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, border-color .2s, transform .15s;
}
.pub-card:hover {
  box-shadow: var(--shadow);
  border-color: #bfd0e6;
  transform: translateY(-1px);
}
.pub-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: .75rem;
  margin-bottom: .55rem;
}
.pub-index {
  font-size: .75rem;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
  padding-top: .1rem;
  min-width: 1.8rem;
}
.pub-badges {
  display: flex;
  gap: .35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  flex-shrink: 0;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: .22rem;
  font-size: .69rem;
  font-weight: 700;
  padding: .18rem .52rem;
  border-radius: 999px;
  letter-spacing: .02em;
  white-space: nowrap;
}
.badge-refereed  { background: #e8f5e9; color: #2e7d32; }
.badge-preprint  { background: #fff8e1; color: #f57f17; }
.badge-proceedings { background: #ede7f6; color: #4527a0; }
.badge-circular  { background: #fce4ec; color: #880e4f; }
.badge-other     { background: #f5f5f5; color: #616161; }
.badge-citations { background: var(--accent-light); color: var(--accent); }

.pub-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.42;
  margin-bottom: .4rem;
}
.pub-title a { color: inherit; text-decoration: none; }
.pub-title a:hover { color: var(--accent); }

.pub-authors {
  font-size: .845rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: .38rem;
}
.author-me { font-weight: 700; color: var(--text); }

.pub-meta {
  font-size: .82rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem .6rem;
  margin-bottom: .7rem;
}
.pub-journal { font-weight: 600; color: var(--text); }
.pub-year    { font-weight: 700; }

.pub-actions { display: flex; align-items: center; gap: .55rem; flex-wrap: wrap; }

.btn-abstract {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .27rem .6rem;
  font-size: .775rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  transition: all .15s;
}
.btn-abstract:hover { border-color: var(--accent); color: var(--accent); }
.btn-abstract.is-open { background: var(--accent-light); border-color: var(--accent); color: var(--accent); }
.btn-abstract .arrow { transition: transform .2s; display: inline-block; }
.btn-abstract.is-open .arrow { transform: rotate(90deg); }

.pub-extlink {
  font-size: .775rem;
  font-weight: 600;
  color: var(--accent);
  padding: .27rem .55rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: .22rem;
  transition: all .15s;
  text-decoration: none;
}
.pub-extlink:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  text-decoration: none;
}

.pub-abstract-box {
  margin-top: .8rem;
  padding-top: .8rem;
  border-top: 1px solid var(--border);
  font-size: .845rem;
  color: var(--text-muted);
  line-height: 1.68;
  display: none;
}
.pub-abstract-box.is-open { display: block; }

/* ─── Empty / loading states ─────────────────────────────────────────────── */
.state-box {
  text-align: center;
  padding: 3.5rem 1.5rem;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.state-box .state-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: .4rem; }

/* ─── Pagination ──────────────────────────────────────────────────────────── */
.pub-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .4rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}
.page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 .55rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: .85rem;
  font-family: var(--font);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .15s;
  text-decoration: none;
}
.page-btn:hover:not(:disabled):not(.is-active) { border-color: var(--accent); color: var(--accent); }
.page-btn.is-active { background: var(--accent); border-color: var(--accent); color: #fff; cursor: default; }
.page-btn:disabled { opacity: .38; cursor: not-allowed; pointer-events: none; }
.page-ellipsis { border: none; background: none; color: var(--text-muted); cursor: default; font-size: .85rem; min-width: 24px; text-align: center; }

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero { padding: 3rem 1rem 2.5rem; }
  .pub-controls { padding: 1rem 1rem .9rem; }
  .control-group { min-width: 100%; }
  .control-group.narrow { min-width: 100%; }
  .cv-metrics { grid-template-columns: repeat(3, 1fr); }
  .cv-narrative-grid { grid-template-columns: 1fr; }
  .cv-pillars { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .header-inner { padding: 0 1rem; }
  .site-title { font-size: .975rem; }
  .page-wrapper { padding: 1.5rem 1rem 2.5rem; }
  .pub-card { padding: 1rem; }
  .pub-stats { gap: .5rem; }
  .stat-card { padding: .6rem .85rem; min-width: 90px; }
  .cv-metrics { grid-template-columns: repeat(2, 1fr); }
}