/* corpus.css — pages corpus « À l'épreuve du flux »
   Palette et typographie alignées sur la variante souveraine. */

:root{
  --bg:#ffffff;
  --band:#eef3fa;
  --blue:#3465a4;
  --blue-d:#284e7e;
  --blue-soft:#dce4f1;
  --ink:#23272e;
  --grey:#5b636d;
  --line:#e3e8f0;
  --header-bg:rgba(255,255,255,.93);
  --footer-bg:#23272e;
  --footer-fg:#c9ced6;
  --footer-em:#e7eaef;
  --footer-link:#9ec3f2;
  --maxw:64rem;
  --read-scale:1;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

/* — Thème sombre — */
[data-theme="dark"]{
  --bg:#15191f;
  --band:#1d242d;
  --blue:#6ea2dd;
  --blue-d:#9ec3f2;
  --blue-soft:#243243;
  --ink:#e7eaef;
  --grey:#a7b0bc;
  --line:#2b333d;
  --header-bg:rgba(21,25,31,.93);
  --footer-bg:#0f1318;
  --footer-fg:#b8c0cb;
  --footer-em:#e7eaef;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:1.08rem;line-height:1.72;-webkit-font-smoothing:antialiased;
  transition:background .2s ease,color .2s ease}
a{color:var(--blue)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}

/* — En-tête collant — */
header{position:sticky;top:0;z-index:20;background:var(--header-bg);
  backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.bar{max-width:var(--maxw);margin:0 auto;padding:.7rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.wordmark{font-weight:700;letter-spacing:-.01em;color:var(--ink);text-decoration:none;font-size:1rem}
.wordmark b{color:var(--blue)}
.barnav{display:flex;align-items:center;gap:.5rem}
.barlink{font-size:.92rem;text-decoration:none;color:var(--blue);padding:.4rem .2rem;white-space:nowrap}
.barlink:hover{color:var(--blue-d);text-decoration:underline}
.barbtn,.baricon{font-family:inherit;cursor:pointer;border:none;border-radius:7px}
.barbtn{display:none;font-size:.9rem;color:#fff;background:var(--blue);padding:.45rem .9rem}
.barbtn:hover{background:var(--blue-d)}
.baricon{font-size:.9rem;line-height:1;color:var(--blue);background:transparent;
  border:1px solid var(--line);padding:.4rem .55rem}
.baricon:hover{border-color:var(--blue);color:var(--blue-d)}

/* — Mise en page : sommaire + article — */
.page{display:grid;grid-template-columns:15rem minmax(0,44rem);gap:3rem;
  max-width:var(--maxw);margin:0 auto;padding:2.5rem 1.25rem 1rem;align-items:start}

/* — Sommaire latéral (estompé, net au survol) — */
#TOC{position:sticky;top:4.5rem;font-size:.82rem;line-height:1.4;
  max-height:calc(100vh - 6rem);overflow:auto;
  border-left:2px solid var(--line);padding:.2rem 0 .2rem 1rem;
  opacity:.5;transition:opacity .25s ease}
#TOC:hover,#TOC:focus-within{opacity:1}
#TOC .toc-title{margin:0 0 .6rem;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);font-weight:700}
#TOC ul{list-style:none;margin:0;padding:0}
#TOC ul ul{margin:.2rem 0 .4rem .8rem}
#TOC li{margin:.35rem 0}
#TOC a{color:var(--grey);text-decoration:none}
#TOC a:hover{color:var(--blue)}

/* — Article — */
article{min-width:0}
.vol-head{margin:0 0 2.4rem;padding-bottom:1.4rem;border-bottom:1px solid var(--line)}
.vol-head .vh-kicker{font-size:1.02rem;color:var(--blue);font-weight:600;letter-spacing:.01em;margin:0 0 .55rem}
.vol-head .title{font-size:clamp(2rem,4.4vw,2.9rem);line-height:1.1;letter-spacing:-.02em;font-weight:800;margin:0 0 .6rem}
.vol-head .subtitle{font-size:1.18rem;color:var(--grey);font-style:italic;margin:0 0 .5rem}
.vol-head .colophon{margin-top:1.4rem;padding:.85rem 1.1rem;background:var(--band);
  border:1px solid var(--line);border-radius:9px;font-size:.7rem;color:var(--grey);line-height:1.6}
.vol-head .colophon p{margin:.12rem 0}
.vol-head .colophon .by{color:var(--ink);font-weight:600}
.vol-head .colophon a{color:var(--blue)}

article h2{font-size:clamp(1.4rem,2.8vw,1.85rem);line-height:1.18;letter-spacing:-.01em;font-weight:700;margin:2.8rem 0 1rem;padding-top:1.4rem;border-top:1px solid var(--line)}
article h3{font-size:1.18rem;font-weight:700;color:var(--blue-d);margin:2rem 0 .6rem}
article p{margin:0 0 1.05rem}
article em{font-style:italic}
article strong{font-weight:650}
article blockquote{margin:1.4rem 0;padding:.2rem 0 .2rem 1.1rem;border-left:3px solid var(--blue-soft);color:var(--grey);font-style:italic}
article ul,article ol{margin:0 0 1.05rem;padding-left:1.4rem}
article li{margin:.3rem 0}
article hr{border:none;border-top:1px solid var(--line);margin:2.4rem auto;width:60%}

/* — Poursuivre la lecture — */
.suite{margin-top:3.4rem;padding-top:1.6rem;border-top:2px solid var(--blue-soft)}
.suite h2{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);font-weight:700;margin:0 0 1.1rem;border:none;padding:0}
.suite-grid{display:grid;gap:1rem}
.suite-card{display:block;text-decoration:none;background:var(--band);border:1px solid var(--line);border-radius:10px;padding:1rem 1.2rem;transition:border-color .15s,background .15s}
.suite-card:hover{border-color:var(--blue)}
.suite-card .t{display:block;font-weight:700;color:var(--blue-d);margin-bottom:.2rem}
.suite-card .i{display:block;font-size:.95rem;color:var(--grey)}

/* — Pied de page (même design que la page d'accueil) — */
footer{background:var(--footer-bg);color:var(--footer-fg);padding:2.4rem 1.25rem;margin-top:2rem}
.foot{max-width:var(--maxw);margin:0 auto;font-size:.9rem;line-height:1.7;
  display:flex;justify-content:space-between;align-items:center;gap:1.2rem 2rem;flex-wrap:wrap}
.foot-text p{margin:.15rem 0}
.foot .em{font-style:italic;color:var(--footer-em)}
.foot a{color:var(--footer-link)}
.foot-cta{flex:none;color:#fff;background:var(--blue);text-decoration:none;border-radius:8px;padding:.6rem 1.05rem;font-weight:600;white-space:nowrap}
.foot-cta:hover{background:var(--blue-d)}

/* — Mode lecture — */
.read-controls{display:none}
body.reading > header,body.reading > footer,body.reading #TOC{display:none}
body.reading .page{grid-template-columns:minmax(0,42rem);justify-content:center;padding-top:3.5rem}
body.reading .vol-head .colophon{display:none}
body.reading article{font-size:calc(1.12rem * var(--read-scale,1))}
body.reading .read-controls{display:flex;gap:.4rem;position:fixed;top:1rem;right:1rem;z-index:40;
  background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:.35rem;box-shadow:0 6px 22px rgba(0,0,0,.18)}
.read-controls button{font-family:inherit;cursor:pointer;border:1px solid var(--line);background:transparent;
  color:var(--ink);border-radius:7px;padding:.4rem .7rem;font-size:.9rem}
.read-controls button:hover{border-color:var(--blue);color:var(--blue-d)}
#read-close{font-weight:600}

/* — Responsive — */
@media (max-width:900px){
  .barnav{gap:.35rem}
  .barbtn{display:inline-block}
  .page{grid-template-columns:1fr;gap:0;padding-top:1.5rem}
  #TOC{display:none;position:static;max-height:none;border-left:none;border-bottom:1px solid var(--line);padding:0 0 1.2rem;margin-bottom:1.6rem;opacity:1}
  #TOC.open{display:block}
  .vol-head{margin-top:.5rem}
  body.reading .page{grid-template-columns:1fr}
}

/**/
code {
  font-size: .8em;
}
table {
  font-size: .8em;
  border: 1px solid var(--line);
  margin: 1em 0;
}