/* Mise en page sobre (essai A), tons chauds (essai B), accents ocre ponctuels. */

:root {
  --bg: #faf5f1;        /* crème chaud */
  --ink: #2b1f1a;       /* brun presque noir : titres */
  --text: #54443c;      /* texte courant */
  --muted: #9a887e;     /* dates, mentions secondaires */
  --line: #eadfd6;      /* filets */
  --accent: #3e5a86;    /* bleu denim de la chemise, à doser */
  --card: #fff;         /* fond des étiquettes */
  color-scheme: light;
}

/* Mode nuit : mêmes teintes, inversées (brun très sombre, crème, denim éclairci) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1b1714; --ink: #f1e8e0; --text: #c9bab0; --muted: #8e7f75;
    --line: #342b25; --accent: #8ea8d2; --card: #241e1a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #1b1714; --ink: #f1e8e0; --text: #c9bab0; --muted: #8e7f75;
  --line: #342b25; --accent: #8ea8d2; --card: #241e1a; color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.7 Inter, system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--line); transition: color .2s, border-color .2s; }
a:hover { color: var(--accent); border-color: var(--accent); }

ul { list-style: none; padding: 0; margin: 0; }

.wrap { max-width: 54rem; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Icônes ---------- */

.icons { display: flex; gap: 1.2rem; }
.icons a { border: 0; color: var(--muted); }
.icons a:hover { color: var(--accent); }
.icons svg { width: 20px; height: 20px; display: block; }

/* ---------- Accueil ---------- */

.home { padding-block: 4.5rem 4rem; }
.hero { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 3rem; }
.hero img {
  width: 14.5rem; max-width: 100%; aspect-ratio: 1 / 1;
  object-fit: cover; object-position: 50% 20%;
  border-radius: 1rem;
}
.hero .photo { margin: .425rem 0 0; width: 14.5rem; max-width: 100%; }  /* haut aligné sur les majuscules du nom */
.hero .photo img { width: 100%; display: block; }
.hero figcaption { margin-top: 1.6rem;  /* ligne de base alignée sur « Research areas » */ font-size: 13px; color: var(--muted); }
.hero figcaption a { color: var(--text); }
.hero figcaption a:hover { color: var(--accent); }
.hero .txt { flex: 1; min-width: 16rem; }
.hero h1 { margin: 0; color: var(--ink); font-weight: 560; font-size: 2rem; letter-spacing: -.02em; line-height: 1.15; }
.hero .role { margin: .95rem 0 0; font-size: 17px; }
.hero .bio { margin: 1.9rem 0 0; max-width: 36rem; }
.hero .bio + .bio { margin-top: .9rem; }
.hero .bio b { color: var(--ink); font-weight: 600; }
.hero .icons { margin-top: 1.6rem; }
.hero nav { display: flex; flex-wrap: wrap; gap: .4rem 1.6rem; margin-top: 1.6rem; padding-top: 1.3rem; border-top: 1px solid var(--line); font-size: 15px; }
.hero nav a { border: 0; color: var(--text); }
.hero nav a:hover { color: var(--accent); }

/* ---------- En-tête des pages intérieures ---------- */

.top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: .6rem 2rem; padding-block: 2.2rem 1.4rem; border-bottom: 1px solid var(--line); }
.top .name { border: 0; color: var(--ink); font-weight: 560; font-size: 1.05rem; }
.top .name:hover { color: var(--accent); }
.top nav { display: flex; flex-wrap: wrap; gap: .3rem 1.4rem; font-size: 15px; }
.top nav a { border: 0; color: var(--muted); }
.top nav a:hover { color: var(--accent); }
.top nav a.on { color: var(--accent); }

main { padding-block: 2.75rem 6rem; }
main h1 { margin: 0 0 1.5rem; color: var(--ink); font-weight: 500; font-size: 1.9rem; letter-spacing: -.01em; }
main h2 { margin: 3rem 0 .9rem; color: var(--accent); font-weight: 500; font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; }
main h2:first-of-type { margin-top: 0; }
main p { margin: 0 0 1rem; max-width: 42rem; }

/* Recherche */
.areas li { margin-bottom: 1rem; max-width: 42rem; }
.areas b { color: var(--ink); font-weight: 600; }

/* Centres d'intérêt */
.tags { display: flex; flex-wrap: wrap; gap: .55rem; }
.tags li { border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: .3rem .95rem; font-size: 15px; color: var(--ink); }

/* Parcours */
.cv li { display: grid; grid-template-columns: 8rem 1fr; gap: 1.5rem; padding: .75rem 0; border-bottom: 1px solid var(--line); }
.cv-when { color: var(--muted); font-size: 14px; padding-top: .1rem; }
.cv b { color: var(--ink); font-weight: 500; }

/* Publications */
.pubs li { display: flex; flex-direction: column; margin-bottom: 1.3rem; }
.pub-t { color: var(--ink); }
.pub-a, .pub-v { font-size: 14px; }
.pub-v { color: var(--muted); }
.pubs strong { color: var(--ink); font-weight: 600; }

/* Logiciels */
.soft li { padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.soft li p { margin: .25rem 0 0; }
code { font: 500 15px ui-monospace, Menlo, monospace; color: var(--ink); }
.soft-tag { font-size: 12.5px; color: var(--muted); margin-left: .5rem; }

footer { padding-block: 0 3rem; font-size: 13px; color: var(--muted); }

@media (max-width: 40rem) {
  .hero { gap: 2rem; }
  .hero .photo { width: 100%; }
  .hero figcaption { margin-top: .6rem; }  /* empilé : rien à aligner */
  .cv li { grid-template-columns: 1fr; gap: .1rem; }
}
main p + h2 { margin-top: 2.5rem !important; }

/* Enseignement */
.teach li { display: grid; grid-template-columns: 8rem 1fr; gap: 1.5rem; padding: 1.4rem 0; border-bottom: 1px solid var(--line); }
.teach-t { color: var(--ink); font-weight: 500; }
.teach-t a { border-color: var(--line); }
.teach-lang { color: var(--muted); font-weight: 400; font-size: 14px; }
.teach-l { color: var(--muted); font-size: 14px; margin-top: .1rem; }
.teach li p { margin: .5rem 0; }
.teach-w { font-size: 14px; }
.teach-w a { white-space: nowrap; }  /* pas de coupure dans les noms */
@media (max-width: 40rem) { .teach li { grid-template-columns: 1fr; gap: .2rem; } }

/* Bouton clair / sombre */
.theme-toggle { border: 0; background: none; padding: 0; color: var(--muted); cursor: pointer; display: inline-flex; }
.theme-toggle:hover { color: var(--accent); }
.theme-toggle svg { width: 19px; height: 19px; display: block; }
.theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .moon { display: none; }
}
.top .theme-toggle { margin-left: .4rem; align-self: center; }

/* Biographie : deux colonnes */
.bio-cols { display: grid; grid-template-columns: 1.35fr 1fr; gap: 3.5rem; }
.bio-cols h2 { margin-top: 0 !important; }
.cv2 li { display: flex; flex-direction: column; padding: .9rem 0; border-bottom: 1px solid var(--line); }
.cv2 li:first-child { padding-top: 0; }
.cv2 .cv-when { font-size: 13.5px; }
.cv2 b { color: var(--ink); font-weight: 500; margin: .1rem 0; }
@media (max-width: 44rem) { .bio-cols { grid-template-columns: 1fr; gap: 2.5rem; } }

/* Texte justifié (paragraphes seulement) */
@media (min-width: 40rem) {
  .hero .bio, main p { text-align: justify; hyphens: auto; -webkit-hyphens: auto; hyphenate-limit-chars: 9 4 4; }
  .hero .bio + .bio { text-align: left; hyphens: manual; -webkit-hyphens: manual; }  /* mots longs insécables : blancs trop grands si justifié */
}

/* Petits téléphones : menu resserré pour que le bouton jour/nuit reste sur la ligne.
   Seuil = largeur où le menu normal ne tient plus (environ 402 px) */
@media (max-width: 25.25rem) {
  .top nav { gap: .3rem .9rem; font-size: 14px; }
  .top .theme-toggle { margin-left: .1rem; }
}

/* Accueil : menu seul, à droite (à gauche sur téléphone, comme sur les autres pages) */
.top-home .name-ghost { visibility: hidden; }
@media (max-width: 40rem) {
  .top-home { padding-block: 1.6rem 1.1rem; }
  .top-home .name-ghost { display: none; }
  .home { padding-block: 2rem 3rem; }
}

/* ---------- Transition entre pages (View Transitions, navigateurs récents) ----------
   Le grand nom de l'accueil et le petit nom de l'en-tête sont le même élément :
   le navigateur anime le passage de l'un à l'autre. Ailleurs, simple fondu. */
@view-transition { navigation: auto; }
.hero h1 { width: fit-content; view-transition-name: site-name; }
.top a.name { view-transition-name: site-name; }
::view-transition-group(site-name) { animation-duration: .45s; animation-timing-function: cubic-bezier(.2, .7, .2, 1); }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: .3s; }
@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
}