/* =========================================================
   Tokens
========================================================= */
:root{
  --bg: #ffffff;
  --ink: #111111;
  --ink-soft: #5c5c5c;
  --hairline: #e2e2e2;
  --inverse-bg: #111111;
  --inverse-ink: #ffffff;
  --inverse-soft: #b8b8b8;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --max-w: 880px;
  --gutter: clamp(20px, 5vw, 64px);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a{ color: inherit; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  html{ scroll-behavior: auto; }
}

/* =========================================================
   Header / tabs
========================================================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--gutter);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--hairline);
}

.brand-name{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.tabs{ display: flex; gap: 2px; }

.tab-link{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: none;
  border: none;
  color: var(--ink-soft);
  padding: 8px 14px;
  cursor: pointer;
  position: relative;
}
.tab-link:hover{ color: var(--ink); }
.tab-link.is-active{ color: var(--ink); }
.tab-link.is-active::after{
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 0;
  height: 2px;
  background: var(--ink);
}
.tab-link:focus-visible,
.brand:focus-visible,
.filter-btn:focus-visible,
a:focus-visible,
button:focus-visible{
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

.nav-toggle{ display: none; }

/* =========================================================
   Layout / panels
========================================================= */
main{ max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }

.tab-panel{ display: none; padding-top: 8px; animation: fade-in 0.35s ease; }
.tab-panel.is-active{ display: block; }

@keyframes fade-in{
  from{ opacity: 0; transform: translateY(6px); }
  to{ opacity: 1; transform: translateY(0); }
}

.section-block{ padding: 56px 0; border-top: 1px solid var(--hairline); }

.block-title{
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  margin: 0 0 24px;
}
.block-index{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  font-weight: 400;
}

/* =========================================================
   Hero (Presentation)
========================================================= */
.hero{
  background: var(--inverse-bg);
  color: var(--inverse-ink);
  margin: 0 calc(-1 * var(--gutter)) 0;
  padding: 64px var(--gutter) 56px;
  position: relative;
  overflow: hidden;
}

.hero-fig{
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 480px;
  max-width: 60%;
  height: auto;
  opacity: 0.9;
}

.hero-photo{
  position: absolute;
  top: 64px;
  right: var(--gutter);
  width: 200px;
  height: 240px;
  object-fit: cover;
  border: 1px solid rgba(255,255,255,0.3);
  z-index: 1;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--inverse-soft);
  margin: 0 0 18px;
  position: relative;
  z-index: 1;
}

.hero-name{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  position: relative;
  z-index: 1;
}

.hero-affiliation{
  font-size: 1rem;
  color: var(--inverse-soft);
  margin: 0 0 28px;
  white-space: nowrap;
  position: relative;
  z-index: 1;
}

.hero-intro{
  max-width: 52ch;
  font-size: 1.02rem;
  color: #e6e6e6;
  margin: 0 0 32px;
  position: relative;
  z-index: 1;
}

.contact-row{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 0;
  padding: 0;
  position: relative;
  z-index: 1;
}
.contact-row a{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  border-bottom: 1px solid var(--inverse-soft);
  padding-bottom: 2px;
}
.contact-row a:hover{ border-color: var(--inverse-ink); }

/* =========================================================
   Tags / mini timeline (Presentation)
========================================================= */
.tag-list{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0; padding: 0;
}
.tag-list li{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 7px 14px;
  color: var(--ink-soft);
}

.mini-timeline{ list-style: none; margin: 0; padding: 0; }
.mini-timeline li{
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--hairline);
  font-size: 0.95rem;
}
.mini-timeline li:first-child{ border-top: none; }
.mt-date{ font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-soft); }

/* =========================================================
   Panel head (Publications / Enseignement / CV)
========================================================= */
.panel-head{ padding: 56px 0 32px; }
.panel-head h1{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.panel-sub{ color: var(--ink-soft); margin: 0; }

.panel-head--cv{
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.btn-download{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  border: 1px solid var(--ink);
  padding: 10px 18px;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn-download:hover{ background: var(--ink); color: var(--bg); }

/* =========================================================
   Publications table
========================================================= */
.filter-row{ display: flex; gap: 8px; margin-bottom: 28px; flex-wrap: wrap; }
.filter-btn{
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: none;
  border: 1px solid var(--hairline);
  padding: 7px 14px;
  cursor: pointer;
  color: var(--ink-soft);
}
.filter-btn.is-active{ border-color: var(--ink); color: var(--ink); }

.pub-table{
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 64px;
}
.pub-table thead th{
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
  padding: 0 12px 12px;
  border-bottom: 1px solid var(--ink);
}
.pub-table tbody tr{ border-bottom: 1px solid var(--hairline); }
.pub-table tbody tr.is-hidden{ display: none; }
.pub-table td{ padding: 18px 12px; vertical-align: top; }
.col-year{ font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink-soft); width: 70px; }
.col-status{ width: 140px; text-align: right; }

.pub-title{
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  text-decoration: none;
  margin-bottom: 4px;
}
.pub-title:hover{ text-decoration: underline; }
.pub-title--nolink{ cursor: default; }
.pub-venue{ display: block; font-size: 0.85rem; color: var(--ink-soft); }

.status-tag{
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  color: var(--ink-soft);
  white-space: nowrap;
}
.status-published{ border-color: var(--ink); color: var(--ink); }

/* =========================================================
   Teaching cards
========================================================= */
.course-list{ padding-bottom: 64px; }
.course-card{
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-top: 1px solid var(--hairline);
}
.course-list .course-card:last-child{ border-bottom: 1px solid var(--hairline); }

.course-code{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  border: 1px solid var(--hairline);
  padding: 4px 8px;
  height: fit-content;
  white-space: nowrap;
}
.course-body h3{
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 6px;
}
.course-meta{ font-size: 0.85rem; color: var(--ink-soft); margin: 0 0 10px; }
.course-desc{ margin: 0; max-width: 60ch; }

/* =========================================================
   CV
========================================================= */
.cv-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  padding-bottom: 64px;
}

.cv-list{ list-style: none; margin: 0 0 48px; padding: 0; }
.cv-list li{
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--hairline);
  font-size: 0.92rem;
}
.cv-list li:first-child{ border-top: none; }
.cv-date{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); }
.cv-what strong{ font-weight: 600; }

.skill-list{ list-style: none; margin: 0 0 48px; padding: 0; }
.skill-list li{
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--hairline);
  font-size: 0.9rem;
}
.skill-list li:first-child{ border-top: none; }
.skill-list li span:first-child{ font-family: var(--font-mono); font-size: 0.75rem; color: var(--ink-soft); }

/* =========================================================
   Footer
========================================================= */
.site-footer{
  border-top: 1px solid var(--hairline);
  padding: 28px var(--gutter) 40px;
  text-align: center;
}
.site-footer p{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: 0;
}
.site-footer a{ text-decoration: none; border-bottom: 1px solid var(--hairline); }

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 720px){
  .site-header{ padding: 16px var(--gutter); }
  .tabs{
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    padding: 8px var(--gutter) 16px;
    display: none;
  }
  .tabs.is-open{ display: flex; }
  .tab-link{ text-align: left; padding: 12px 0; }
  .tab-link.is-active::after{ left: 0; right: auto; width: 24px; bottom: 6px; }

  .nav-toggle{
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
  }
  .nav-toggle span{ width: 20px; height: 1.5px; background: var(--ink); }

  .hero-fig{ display: none; }
  .hero-photo{ display: none; }
  .hero{ padding: 48px var(--gutter) 40px; }
  .hero-affiliation{ white-space: normal; }

  .mini-timeline li,
  .cv-list li,
  .skill-list li{ grid-template-columns: 1fr; gap: 4px; }

  .cv-grid{ grid-template-columns: 1fr; gap: 8px; }

  .course-card{ grid-template-columns: 1fr; gap: 10px; }

  .pub-table thead{ display: none; }
  .pub-table, .pub-table tbody, .pub-table tr, .pub-table td{ display: block; width: 100%; }
  .pub-table tr{ padding: 18px 0; }
  .col-status{ text-align: left; margin-top: 8px; }
  .col-year{ margin-bottom: 6px; }

  .panel-head--cv{ align-items: flex-start; flex-direction: column; }
}