/* Cahier de laboratoire v2 — socle éditorial commun famille « ia » (S2M Vision).
   Les 5 jetons de couleur (--paper --ink --muted --accent --line) sont posés par
   client.js depuis CLIENT.couleurs ; les valeurs ci-dessous ne servent que de
   repli pour une page chargée sans JavaScript. */

@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-400-italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-600-normal.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-600-italic.woff2") format("woff2");font-weight:600;font-style:italic;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-700-normal.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Source Sans 3";src:url("fonts/source-sans-3-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Source Sans 3";src:url("fonts/source-sans-3-latin-600-normal.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Source Sans 3";src:url("fonts/source-sans-3-latin-700-normal.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}

:root{
  --paper:#f3efe6;
  --ink:#20211d;
  --muted:#6b6a60;
  --accent:#9a5b2e;
  --line:#dcd6c7;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
[hidden]{display:none !important}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Source Sans 3",sans-serif;
  font-size:16px;line-height:1.6}
h1,h2,h3{font-family:"Newsreader",serif;font-weight:600;color:var(--ink);margin:0 0 .4em;letter-spacing:-0.01em}
em{font-style:italic}
a{color:inherit}
button{font-family:inherit}
img,svg{max-width:100%;display:block}
.icone{width:1.15em;height:1.15em;stroke:currentColor;stroke-width:1.5;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:none}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Bandeau démo */
.bandeau-demo{background:var(--ink);color:var(--paper);font-size:.84rem;
  padding:.55rem 1rem;display:flex;align-items:center;justify-content:center;gap:.75rem;text-align:center}
.bandeau-demo p{margin:0}
.bandeau-demo button{background:transparent;border:1px solid color-mix(in srgb, var(--paper) 50%, transparent);
  color:var(--paper);border-radius:5px;width:30px;height:30px;min-width:44px;min-height:30px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;flex:none}

/* En-tête app (au-dessus de la démo, sous le héros) */
.entete{padding:1rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  border-bottom:1px solid var(--line);background:var(--paper)}
.marque-app{display:flex;align-items:center;gap:.6rem;font-family:"Newsreader",serif;font-weight:600;font-size:1.1rem;color:var(--ink)}
.marque-app .puce{width:32px;height:32px;border-radius:6px;background:var(--ink);color:var(--paper);
  display:flex;align-items:center;justify-content:center;flex:none}
.entete-sub{font-size:.8rem;color:var(--muted)}

/* ---------------- Héros éditorial ---------------- */
.hero{display:grid;grid-template-columns:repeat(12,1fr);gap:0;background:var(--paper);position:relative;overflow:hidden}
.hero-texte{grid-column:1 / 7;padding:clamp(2.5rem,6vw,5rem) clamp(1.25rem,4vw,3.5rem);display:flex;flex-direction:column;
  justify-content:center;gap:1.1rem;min-height:clamp(360px,58vh,620px)}
.hero-metier{font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);font-weight:600}
.hero h1{font-size:clamp(2.2rem,3.2vw + 1.3rem,3.6rem);line-height:1.06;letter-spacing:-0.03em;margin:0;
  opacity:0;transform:translateY(40px);animation:heros-entree .7s cubic-bezier(.22,1,.36,1) forwards}
.hero h1 em{font-weight:600;color:var(--accent)}
.hero .chapo{font-size:clamp(1rem,.4vw + .95rem,1.15rem);color:var(--muted);max-width:52ch;line-height:1.6;margin:0;
  opacity:0;transform:translateY(24px);animation:heros-entree .7s cubic-bezier(.22,1,.36,1) .08s forwards}
.hero .hero-cta-ligne{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;
  opacity:0;transform:translateY(18px);animation:heros-entree .7s cubic-bezier(.22,1,.36,1) .16s forwards}
.hero .phrase-client{font-family:"Newsreader",serif;font-style:italic;font-size:1.05rem;color:var(--ink);
  border-left:2px solid var(--accent);padding-left:.9rem;margin:.2rem 0 0;max-width:48ch}
@keyframes heros-entree{to{opacity:1;transform:none}}

.hero-photo{grid-column:7 / 13;position:relative;min-height:clamp(280px,58vh,620px);overflow:hidden}
.hero-photo img{width:100%;height:100%;object-fit:cover;display:block}
.hero-photo::before{content:"";position:absolute;inset:0;
  background:linear-gradient(0deg, color-mix(in srgb, var(--ink) 55%, transparent) 0%, transparent 45%),
             linear-gradient(100deg, color-mix(in srgb, var(--ink) 28%, transparent) 0%, transparent 40%);
  pointer-events:none}
.hero-photo::after{content:"";position:absolute;inset:0;opacity:.05;mix-blend-mode:overlay;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.hero-credit{position:absolute;right:.7rem;bottom:.6rem;font-size:.68rem;color:color-mix(in srgb, var(--paper) 85%, transparent);
  background:color-mix(in srgb, var(--ink) 45%, transparent);padding:.15rem .5rem;border-radius:3px;z-index:2}

@media (max-width:900px){
  .hero{grid-template-columns:1fr}
  .hero-texte{grid-column:1/-1;order:2;min-height:auto;padding:2rem 1.1rem 2.5rem}
  .hero-photo{grid-column:1/-1;order:1;min-height:52vw}
  .hero .phrase-client{display:none}
}

@media (prefers-reduced-motion:reduce){
  .hero h1,.hero .chapo,.hero .hero-cta-ligne{opacity:1;transform:none;animation:none}
}

/* Grille principale : flux à gauche, journal à droite */
.scene{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:0;align-items:start}
.flux{min-width:0;padding:1.25rem;display:flex;flex-direction:column;gap:1rem}
.journal-colonne{border-left:1px solid var(--line);background:color-mix(in srgb, var(--paper) 92%, var(--ink) 4%);
  min-height:100%;position:sticky;top:0;align-self:stretch}
@media (max-width:860px){
  .scene{grid-template-columns:1fr}
  .journal-colonne{border-left:none;border-top:1px solid var(--line);position:static}
}

/* Panneau journal — Source Sans 3, petites capitales + chiffres tabulaires */
.journal{padding:1.1rem;display:flex;flex-direction:column;gap:.7rem;font-family:"Source Sans 3",sans-serif}
.journal h2{font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;font-variant-caps:all-small-caps;
  color:var(--muted);margin:0 0 .3rem;display:flex;align-items:center;gap:.4rem;font-weight:600}
.journal-liste{display:flex;flex-direction:column;gap:0;list-style:none;margin:0;padding:0}
.journal-liste li{display:flex;gap:.6rem;padding:.5rem 0;border-top:1px dashed var(--line);font-size:.8rem;
  color:var(--ink);opacity:0;transform:translateY(4px);animation:entree-journal .35s ease forwards;
  font-variant-numeric:tabular-nums}
.journal-liste li:first-child{border-top:none}
.journal-liste time{color:var(--muted);flex:none;font-size:.72rem;padding-top:.1rem;font-variant-numeric:tabular-nums}
.journal-liste .etape-icone{width:15px;height:15px;flex:none;color:var(--accent);margin-top:.1rem}
.journal-liste .etape-texte b{color:var(--ink);font-weight:600}
@keyframes entree-journal{to{opacity:1;transform:none}}
.journal-vide{font-size:.8rem;color:var(--muted);font-style:italic;padding:.5rem 0}

mark,.surligne{background:color-mix(in srgb, var(--accent) 22%, var(--paper) 78%);color:inherit;padding:.05em .28em;
  border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}

.carte{background:color-mix(in srgb, var(--paper) 100%, white 4%);border:1px solid var(--line);border-radius:8px;padding:1.1rem}
.tampon{display:inline-flex;align-items:center;gap:.35rem;font-weight:600;font-size:.72rem;letter-spacing:.05em;
  text-transform:uppercase;padding:.28rem .6rem;border-radius:5px;border:1.4px solid currentColor}

.bouton{font-weight:600;font-size:.92rem;border-radius:6px;padding:.72rem 1.1rem;border:1px solid transparent;
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;
  transition:transform .18s cubic-bezier(.22,1,.36,1), background .18s ease, border-color .18s ease}
.bouton:active{transform:translateY(1px)}
.bouton .icone{transition:transform .18s cubic-bezier(.22,1,.36,1)}
.bouton:hover .icone{transform:translateX(3px)}
.bouton-primaire{background:var(--ink);color:var(--paper)}
.bouton-primaire:hover{background:color-mix(in srgb, var(--ink) 85%, black 15%)}
.bouton-accent{background:var(--accent);color:var(--paper)}
.bouton-accent:hover{background:color-mix(in srgb, var(--accent) 85%, black 15%)}
.bouton-fantome{background:transparent;color:var(--ink);border-color:var(--line)}
.bouton-fantome:hover{background:color-mix(in srgb, var(--ink) 6%, transparent)}
.bouton[disabled]{opacity:.4;cursor:not-allowed;transform:none}

.curseur-lecture{position:relative}
.curseur-lecture::after{content:"";position:absolute;left:0;top:0;height:100%;width:2px;background:var(--accent);
  animation:balayage 1.1s ease-in-out forwards;opacity:.9}
@keyframes balayage{from{left:0}to{left:100%}}

.pied{padding:1.5rem 1.25rem 2rem;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:.45rem;
  font-size:.78rem;color:var(--muted);text-align:center}
.pied a{color:var(--ink);text-decoration:underline}
.reinit{background:transparent;border:none;color:var(--muted);text-decoration:underline;font-size:.78rem;
  cursor:pointer;padding:.4rem;min-height:44px}

.nav-mobile{display:none}
@media (max-width:640px){
  .nav-mobile{display:flex;position:sticky;bottom:0;background:var(--paper);border-top:1px solid var(--line);
    padding:.4rem .5rem env(safe-area-inset-bottom);gap:.3rem;z-index:5}
  .nav-mobile button{flex:1;display:flex;flex-direction:column;align-items:center;gap:.2rem;background:none;border:none;
    color:var(--muted);font-size:.68rem;padding:.4rem .2rem;min-height:44px;border-radius:6px}
  .nav-mobile button.actif{color:var(--ink);background:color-mix(in srgb, var(--accent) 14%, transparent)}
  .nav-mobile .icone{width:20px;height:20px}
}

.toast{position:fixed;left:50%;bottom:1.5rem;transform:translate(-50%,10px);background:var(--ink);color:var(--paper);
  padding:.75rem 1.1rem;border-radius:6px;font-size:.85rem;display:flex;align-items:center;gap:.5rem;
  box-shadow:0 8px 24px rgba(0,0,0,.22);opacity:0;pointer-events:none;transition:opacity .25s ease, transform .25s ease;
  z-index:20;max-width:calc(100vw - 2rem)}
.toast.visible{opacity:1;transform:translate(-50%,0)}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .curseur-lecture::after{display:none}
}