/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:        #ffffff;
  --c-bg-subtle: #f9fafb;
  --c-border:    #e5e7eb;
  --c-text:      #111827;
  --c-muted:     #6b7280;
  --c-accent:    #1d4ed8;
  --c-accent-hover: #1e40af;
  --c-badge:     #dbeafe;
  --c-badge-text:#1d4ed8;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --sidebar-w: 310px;
  --content-max: 860px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-accent); text-decoration: none; }
a:hover { color: var(--c-accent-hover); text-decoration: underline; }

/* ── Top navigation ────────────────────────────────────────── */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  border-bottom: 1px solid var(--c-border);
  backdrop-filter: blur(8px);
}
.topnav-inner {
  max-width: calc(var(--sidebar-w) + var(--content-max) + 4rem);
  margin: 0 auto;
  padding: .75rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.topnav-name {
  font-weight: 600;
  font-size: .95rem;
  white-space: nowrap;
  color: var(--c-text);
  flex-shrink: 0;
}
.topnav-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.topnav-links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--c-muted);
  text-decoration: none;
  transition: color .15s;
}
.topnav-links a:hover { color: var(--c-accent); }
.lang-switch {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .8rem;
  color: var(--c-muted);
  flex-shrink: 0;
}
.lang-link {
  font-weight: 600;
  color: var(--c-muted);
  text-decoration: none;
  padding: .1rem .35rem;
  border-radius: 3px;
  transition: background .15s, color .15s;
}
.lang-link:hover { background: var(--c-bg-subtle); color: var(--c-accent); }
.lang-link.active { color: var(--c-accent); }

/* ── Page layout ───────────────────────────────────────────── */
.layout {
  max-width: calc(var(--sidebar-w) + var(--content-max) + 4rem);
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 0;
  align-items: start;
  padding: 0 2rem;
}

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  position: sticky;
  top: 57px;
  height: calc(100vh - 57px);
  overflow-y: auto;
  padding: 2.5rem 2rem 2.5rem 0;
  border-right: 1px solid var(--c-border);
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
}
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--c-muted); }
.sidebar-inner { display: flex; flex-direction: column; gap: 1.25rem; }

.photo {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--c-border);
  display: block;
}

.name {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-top: .25rem;
}
.position {
  font-size: .85rem;
  font-weight: 500;
  color: var(--c-text);
  line-height: 1.4;
}
.affiliation {
  font-size: .8rem;
  color: var(--c-muted);
  line-height: 1.4;
}
.affil-logos {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-top: .25rem;
}
.affil-logo {
  height: 30px;
  width: auto;
  object-fit: contain;
  opacity: .85;
  transition: opacity .15s, transform .15s, filter .15s;
  display: block;
}
.affil-logos a { display: block; border-radius: 3px; }
.affil-logos a:hover .affil-logo { opacity: 1; transform: scale(1.05); filter: brightness(1.05); }
.inserm-link { display: inline-block; opacity: .85; margin-top: .3rem; border-radius: 3px; transition: opacity .15s, transform .15s; }
.inserm-link:hover { opacity: 1; transform: scale(1.05); }
.inserm-logo { height: 28px; width: auto; display: block; }
body.dark .inserm-logo { filter: invert(1); }

/* Metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .5rem;
  padding: .75rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.metric { text-align: center; }
.metric-value { display: block; font-size: 1rem; font-weight: 700; color: var(--c-accent); }
.metric-label { display: block; font-size: .65rem; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); }

/* Dual-source metrics (Scholar + Scopus) */
.metrics-source {
  border-top: 1px solid var(--c-border);
  padding-top: .6rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.metrics-source-row {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  font-size: .75rem;
}
.metrics-db {
  flex-shrink: 0;
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--c-muted);
  min-width: 80px;
}
.metrics-db-vals { color: var(--c-text); }

/* Social links */
.social-links { display: flex; flex-direction: column; gap: .4rem; }
.social-link {
  font-size: .8rem;
  color: var(--c-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .4rem;
  transition: color .15s;
}
.social-link:hover { color: var(--c-accent); }
.social-link svg { width: 14px; height: 14px; flex-shrink: 0; fill: currentColor; }

/* Address */
.sidebar-address {
  font-size: .75rem;
  color: var(--c-muted);
  line-height: 1.6;
  padding-top: .5rem;
  border-top: 1px solid var(--c-border);
}

/* ── Content ───────────────────────────────────────────────── */
.content {
  padding: 2.5rem 0 4rem 2.5rem;
  min-width: 0;
}

.section {
  padding-bottom: 3.5rem;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 3.5rem;
}
.section:last-child { border-bottom: none; }

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--c-muted);
  margin-bottom: 1.25rem;
}
.section p { max-width: 680px; margin-bottom: .9rem; font-size: .95rem; }
.section p:last-child { margin-bottom: 0; }

/* ── Research grid ─────────────────────────────────────────── */
.research-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: .5rem;
}
.research-card {
  background: var(--c-bg-subtle);
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
}
.research-card h3 {
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: .4rem;
  color: var(--c-text);
}
.research-card p { font-size: .83rem; color: var(--c-muted); margin: 0; }

/* ── Publications ──────────────────────────────────────────── */
.pub-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}
.pub-stats { font-size: .85rem; color: var(--c-muted); }
.pub-external-links { display: flex; gap: .5rem; flex-wrap: wrap; }
.pub-ext-link {
  font-size: .78rem;
  padding: .25rem .65rem;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  color: var(--c-muted);
  text-decoration: none;
  transition: border-color .15s, color .15s;
}
.pub-ext-link:hover { border-color: var(--c-accent); color: var(--c-accent); }

.pub-controls {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
#pubSearch {
  flex: 1;
  min-width: 200px;
  padding: .45rem .75rem;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  font-size: .85rem;
  font-family: var(--font);
  outline: none;
  transition: border-color .15s;
}
#pubSearch:focus { border-color: var(--c-accent); }
.sort-btns { display: flex; gap: .35rem; }
.sort-btn {
  padding: .35rem .65rem;
  font-size: .75rem;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  background: none;
  cursor: pointer;
  font-family: var(--font);
  color: var(--c-muted);
  transition: all .15s;
}
.sort-btn:hover, .sort-btn.active { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }
#pubCount { font-size: .78rem; color: var(--c-muted); margin-left: auto; }

.pub-item {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding: .75rem 0;
  border-bottom: 1px solid var(--c-border);
}
.pub-year { width: 2.5rem; flex-shrink: 0; font-size: .78rem; color: var(--c-muted); text-align: right; font-variant-numeric: tabular-nums; }
.pub-body { flex: 1; min-width: 0; }
.pub-title { font-size: .875rem; font-weight: 500; line-height: 1.4; color: var(--c-text); text-decoration: none; }
.pub-title:hover { color: var(--c-accent); }
.pub-venue { font-size: .78rem; color: var(--c-muted); margin-top: .15rem; }
.pub-cit { flex-shrink: 0; font-size: .72rem; font-weight: 600; background: var(--c-badge); color: var(--c-badge-text); padding: .15rem .45rem; border-radius: 999px; white-space: nowrap; align-self: center; }

/* ── Career timeline ───────────────────────────────────────── */
.career-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0 1.25rem;
  padding: .9rem 0;
  border-bottom: 1px solid var(--c-border);
}
.career-item:last-child { border-bottom: none; }
.career-period { font-size: .8rem; color: var(--c-muted); font-variant-numeric: tabular-nums; padding-top: .05rem; }
.career-role { font-size: .9rem; font-weight: 600; line-height: 1.3; }
.career-org { font-size: .82rem; color: var(--c-muted); margin-top: .2rem; }
.career-detail { font-size: .82rem; color: var(--c-muted); margin-top: .3rem; }

/* ── Students ──────────────────────────────────────────────── */
.supervision-stats {
  display: flex;
  gap: 0;
  margin-bottom: 1rem;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  overflow: hidden;
}
.sup-stat {
  flex: 1;
  text-align: center;
  padding: .75rem .5rem;
  border-right: 1px solid var(--c-border);
}
.sup-stat:last-child { border-right: none; }
.sup-val { display: block; font-size: 1.3rem; font-weight: 700; color: var(--c-accent); line-height: 1.1; }
.sup-label { display: block; font-size: .67rem; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); margin-top: .2rem; }
.supervision-meta {
  font-size: .82rem;
  color: var(--c-muted);
  margin-bottom: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .6rem;
  align-items: baseline;
  line-height: 1.6;
}
.supervision-meta strong { color: var(--c-text); }
.sup-sep { color: var(--c-border); }
.students-summary { font-size: .9rem; color: var(--c-muted); margin-bottom: 1.25rem; }
.students-summary strong { color: var(--c-text); }

.student-current-grid {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin-bottom: 1.5rem;
}
.student-card {
  background: var(--c-bg-subtle);
  border: 1px solid var(--c-border);
  border-radius: 6px;
  padding: .75rem 1rem;
  font-size: .85rem;
}
.student-name { font-weight: 600; }
.student-period { color: var(--c-muted); font-size: .78rem; }
.student-thesis { font-style: italic; color: var(--c-muted); margin-top: .25rem; font-size: .82rem; }
.student-advisor { font-size: .78rem; color: var(--c-muted); margin-top: .15rem; }

.former-toggle {
  background: none;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  padding: .5rem 1rem;
  font-size: .85rem;
  cursor: pointer;
  font-family: var(--font);
  color: var(--c-muted);
  width: 100%;
  text-align: left;
  transition: background .15s;
}
.former-toggle:hover { background: var(--c-bg-subtle); }

.former-table { width: 100%; border-collapse: collapse; margin-top: .75rem; font-size: .82rem; }
.former-table th { text-align: left; font-weight: 600; color: var(--c-muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; padding: .4rem .6rem; border-bottom: 2px solid var(--c-border); }
.former-table td { padding: .5rem .6rem; border-bottom: 1px solid var(--c-border); vertical-align: top; }
.former-table tr:last-child td { border-bottom: none; }
.former-table td:first-child { white-space: nowrap; color: var(--c-muted); font-variant-numeric: tabular-nums; }
.former-table .thesis-title { font-style: italic; color: var(--c-muted); font-size: .78rem; display: block; margin-top: .15rem; }
.former-table .current-pos { font-size: .78rem; color: var(--c-accent); margin-top: .1rem; display: block; }

/* ── Projects ──────────────────────────────────────────────── */
.project-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--c-border);
}
.project-item:last-child { border-bottom: none; }
.project-header { display: flex; align-items: baseline; gap: .75rem; flex-wrap: wrap; margin-bottom: .35rem; }
.project-name { font-size: .95rem; font-weight: 600; }
.project-period { font-size: .78rem; color: var(--c-muted); }
.project-role { font-size: .75rem; background: var(--c-bg-subtle); border: 1px solid var(--c-border); border-radius: 4px; padding: .1rem .4rem; color: var(--c-muted); }
.project-desc { font-size: .85rem; color: var(--c-muted); max-width: 680px; }
.project-budget { font-size: .78rem; color: var(--c-accent); margin-top: .2rem; }

/* ── Awards ────────────────────────────────────────────────── */
.award-item { padding: .85rem 0; border-bottom: 1px solid var(--c-border); }
.award-item:last-child { border-bottom: none; }
.award-header { display: flex; align-items: baseline; gap: .75rem; flex-wrap: wrap; margin-bottom: .2rem; }
.award-name { font-size: .9rem; font-weight: 600; }
.award-year { font-size: .78rem; color: var(--c-muted); }
.award-desc { font-size: .83rem; color: var(--c-muted); }

/* ── Books ─────────────────────────────────────────────────── */
.book-item { padding: 1rem 0; border-bottom: 1px solid var(--c-border); }
.book-item:last-child { border-bottom: none; }
.book-cover-row { display: flex; gap: 1.25rem; align-items: flex-start; }
.book-cover {
  width: 90px;
  flex-shrink: 0;
  display: block;
  border: 1px solid var(--c-border);
  border-radius: 3px;
  box-shadow: 2px 3px 8px rgba(0,0,0,.12);
  transition: box-shadow .2s;
}
.book-cover:hover { box-shadow: 3px 5px 14px rgba(0,0,0,.2); }
.book-title { font-size: .95rem; font-weight: 600; margin-bottom: .25rem; }
.book-authors { font-size: .83rem; color: var(--c-muted); margin-bottom: .2rem; }
.book-publisher { font-size: .8rem; color: var(--c-accent); }
.book-desc { font-size: .83rem; color: var(--c-muted); margin-top: .4rem; max-width: 600px; }

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--c-border);
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: .78rem;
  color: var(--c-muted);
}

/* ── Dark mode ─────────────────────────────────────────────── */
body.dark {
  --c-bg:        #0f172a;
  --c-bg-subtle: #1e293b;
  --c-border:    #334155;
  --c-text:      #e2e8f0;
  --c-muted:     #94a3b8;
  --c-accent:    #60a5fa;
  --c-accent-hover: #93c5fd;
  --c-badge:     #1e3a5f;
  --c-badge-text:#60a5fa;
  background-color: var(--c-bg);
  color: var(--c-text);
}
body.dark .topnav { background: rgba(15,23,42,.95); }
body.dark input, body.dark #pubSearch { background: var(--c-bg-subtle); color: var(--c-text); }
body.dark .sort-btn { color: var(--c-muted); background: var(--c-bg-subtle); }
body.dark .supervision-stats { background: var(--c-bg-subtle); }
body.dark .student-card, body.dark .research-card { background: var(--c-bg-subtle); }
body.dark .affil-logo { filter: brightness(1.25) saturate(0.8); }
body.dark .affil-logos a:hover .affil-logo { filter: brightness(1.4) saturate(0.9); }

.dark-toggle {
  background: none; border: 1px solid var(--c-border);
  border-radius: 4px; padding: .1rem .4rem;
  cursor: pointer; font-size: .85rem; line-height: 1;
  color: var(--c-muted); transition: all .15s;
}
.dark-toggle:hover { color: var(--c-accent); border-color: var(--c-accent); }

/* ── Language skills ───────────────────────────────────────── */
.lang-skills {
  display: flex; flex-wrap: wrap; gap: .4rem;
  margin-top: .5rem;
}
.lang-pill {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .75rem; padding: .2rem .55rem;
  border: 1px solid var(--c-border); border-radius: 999px;
  color: var(--c-muted);
}
.lang-pill .lang-level { font-weight: 600; color: var(--c-accent); font-size: .7rem; }

/* ── Citation chart ────────────────────────────────────────── */
.chart-wrap { max-width: 660px; margin: 1.25rem 0; }

/* ── Hidden ────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 0 1.25rem;
  }
  .sidebar {
    position: static;
    height: auto;
    padding: 2rem 0 1.5rem;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
  }
  .sidebar-inner { flex-direction: row; flex-wrap: wrap; align-items: flex-start; gap: 1.5rem; }
  .photo { width: 100px; height: 100px; }
  .metrics { grid-template-columns: repeat(3,1fr); }
  .content { padding: 2rem 0; }
  .research-grid { grid-template-columns: 1fr; }
  .career-item { grid-template-columns: 110px 1fr; }
  .topnav-links { gap: .85rem; }
}

@media (max-width: 600px) {
  .topnav-links { display: none; }
  .sidebar-inner { flex-direction: column; }
  .career-item { grid-template-columns: 1fr; }
  .career-period { font-weight: 500; }
}