/* ACPP — feuille de style unique. Couleurs à ajuster ici si une charte existe. */
:root{
  --graphite:#231d1e; --acier:#6b6264; --voile:#f5f1ee; --blanc:#fff;
  --chant:#761524;      /* bordeaux du logo ACPP */
  --chant-fonce:#5a0f1b; --chant-clair:#e9d3d6; --trait:#e3dad5;
  --f:"Archivo",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --w:72rem;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:5rem}
body{margin:0;font-family:var(--f);font-size:1.0625rem;line-height:1.6;color:var(--graphite);background:var(--blanc)}
img{max-width:100%;height:auto;display:block}
a{color:var(--chant)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--chant);outline-offset:2px}
h1,h2,h3{font-stretch:115%;line-height:1.1;margin:0 0 .6em;letter-spacing:-.01em}
h1{font-size:clamp(2.3rem,6vw,4.4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.4vw,2.4rem);font-weight:750}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1em;max-width:62ch}
.wrap{max-width:var(--w);margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:#fff;padding:.5rem 1rem;z-index:99}

/* En-tête */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--trait)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;min-height:4.25rem;gap:1rem;position:relative}
.logo{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--graphite)}
.logo b{font-stretch:125%;font-weight:800;font-size:1.35rem;letter-spacing:.02em}
.logo small{font-size:.78rem;color:var(--acier);line-height:1.2;max-width:10rem}
.nav{display:flex;gap:1.4rem;align-items:center}
.nav a{text-decoration:none;color:var(--graphite);font-weight:550}
.nav a[aria-current=page]{color:var(--chant);box-shadow:inset 0 -2px 0 var(--chant)}
.menu-btn{display:none;background:none;border:1px solid var(--trait);border-radius:6px;padding:.45rem .7rem;font:inherit;font-weight:600;color:var(--graphite)}
@media (max-width:860px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:.5rem 1.25rem 1.25rem;border-bottom:1px solid var(--trait);gap:0}
  .nav.open{display:flex}
  .nav a{padding:.8rem 0;border-bottom:1px solid var(--voile)}
  .nav a[aria-current=page]{box-shadow:none}
  .nav .btn{margin-top:.8rem;text-align:center}
}

/* Boutons */
.btn{display:inline-block;background:var(--chant);color:#fff;text-decoration:none;padding:.85rem 1.4rem;border-radius:6px;border:0;font:inherit;font-weight:700;cursor:pointer}
.btn:hover{background:var(--chant-fonce)}
.btn.ghost{background:transparent;color:var(--graphite);box-shadow:inset 0 0 0 2px var(--graphite)}
.btn.ghost:hover{background:var(--graphite);color:#fff}
.nav .btn{color:#fff;padding:.6rem 1.1rem}

/* Hero : l'élément signature = trois plaques translucides empilées, une par univers */
.hero{background:var(--voile);overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center;padding-top:4.5rem;padding-bottom:4.5rem}
.hero .lead{font-size:1.2rem;color:#4a4244}
.actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.6rem}
.plaques{position:relative;height:22rem}
.plaque{position:absolute;width:62%;height:60%;border-radius:4px;display:flex;align-items:flex-start;padding:.8rem 1rem;text-decoration:none;color:var(--graphite);font-weight:750;font-stretch:115%;font-size:1.15rem;
  background:linear-gradient(135deg,rgba(255,255,255,.8),rgba(255,255,255,.4));border:1px solid rgba(255,255,255,.95);
  box-shadow:inset 0 0 0 1px rgba(118,21,36,.35),6px 6px 0 var(--chant-clair);backdrop-filter:blur(3px);transition:transform .25s}
.plaque:hover{transform:translate(-4px,-4px)}
.plaque:nth-child(1){top:0;left:0}
.plaque:nth-child(2){top:20%;left:19%}
.plaque:nth-child(3){top:40%;left:38%;box-shadow:inset 0 0 0 1px rgba(118,21,36,.35),6px 6px 0 var(--chant)}
@media (prefers-reduced-motion:reduce){.plaque{transition:none}}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-top:2.5rem;padding-bottom:3rem}.plaques{height:15rem}}

/* Sections */
.bloc{padding:4.5rem 0}
.gris{background:var(--voile)}
.sombre{background:var(--graphite);color:#f3eded}
.sombre a{color:var(--chant-clair)}
.intro{max-width:46rem}
.trois{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin-top:2.5rem}
.univers{border-top:3px solid var(--chant);padding-top:1.2rem}
.univers .suite{font-weight:700;text-decoration:none}
.deux{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
@media (max-width:860px){.trois,.deux{grid-template-columns:1fr;gap:2rem}}
.liste{padding:0;list-style:none;margin:0 0 1.2rem}
.liste li{padding:.6rem 0 .6rem 1.4rem;border-bottom:1px solid var(--trait);position:relative}
.liste li::before{content:"";position:absolute;left:0;top:1.15rem;width:.6rem;height:.6rem;background:var(--chant)}
.sombre .liste li{border-color:#3d3435}

/* Emplacements photo — à remplacer par les vraies images (balise <img>) */
.photo{aspect-ratio:4/3;background:repeating-linear-gradient(135deg,#e3e9eb 0 12px,#edf1f2 12px 24px);border:1px dashed #9fb0b8;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--acier);font-size:.9rem;padding:1rem;border-radius:4px}
.galerie{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2rem}
@media (max-width:640px){.galerie{grid-template-columns:1fr 1fr}}

/* Bandeau d'appel */
.appel{background:var(--chant);color:#fff;padding:3.5rem 0}
.appel .wrap{display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap}
.appel h2{margin:0}
.appel .btn{background:#fff;color:var(--chant)}
.appel .btn:hover{background:var(--graphite);color:#fff}

/* Pages intérieures */
.entete{background:var(--voile);padding:3.5rem 0 3rem;border-bottom:1px solid var(--trait)}
.entete .lead{font-size:1.15rem;color:#4a4244}
.fil{font-size:.9rem;color:var(--acier);margin-bottom:.8rem}.fil a{color:var(--acier)}

/* Formulaire */
.contact{display:grid;gap:1rem}
.champ label{display:block;font-weight:650;margin-bottom:.3rem}
.champ input,.champ textarea,.champ select{width:100%;font:inherit;padding:.75rem .85rem;border:1px solid #c9bdb8;border-radius:6px;background:#fff;color:var(--graphite)}
.champ textarea{min-height:9rem;resize:vertical}
.hp{position:absolute;left:-9999px}
.rgpd{font-size:.88rem;color:var(--acier)}
.coord p{margin:0 0 1.2rem}.coord strong{display:block}
.carte{border:0;width:100%;aspect-ratio:4/3;border-radius:4px}
.msg{padding:1rem 1.2rem;border-radius:6px;background:#f6e8ea;border-left:4px solid var(--chant)}
.msg.err{background:#fdeceb;border-color:#b3261e}

/* Pied de page */
footer{background:var(--graphite);color:#c9bfbf;padding:3rem 0 2rem;font-size:.95rem}
footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem}
footer a{color:#f3eded;text-decoration:none}footer a:hover{text-decoration:underline}
footer p{margin:0 0 .5rem}
footer .bas{grid-column:1/-1;border-top:1px solid #3d3435;padding-top:1.2rem;font-size:.85rem}
@media (max-width:760px){footer .wrap{grid-template-columns:1fr}}

/* Surlignage des textes à compléter — supprimer la classe une fois le texte validé */
.a-completer{background:#fff4c7;outline:1px dashed #c9a400;padding:0 .2em}
/* Liste d'étapes numérotée (vraie séquence) */
ol.liste{counter-reset:e}
ol.liste li{counter-increment:e;padding-left:2.2rem}
ol.liste li::before{content:counter(e);background:none;color:var(--chant);font-weight:800;font-stretch:115%;width:auto;height:auto;top:.6rem}

/* ===== v2 : illustrations "plan technique" et adresses ===== */
.illu{background:var(--voile);border:1px solid var(--trait);border-radius:6px;padding:1.5rem;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;
  background-image:linear-gradient(var(--trait) 1px,transparent 1px),linear-gradient(90deg,var(--trait) 1px,transparent 1px);background-size:24px 24px;background-position:-1px -1px}
.gris .illu{background-color:#fff}
.illu svg{width:100%;height:100%}
.illu .g{stroke:var(--graphite);stroke-width:2;fill:none}
.illu .gf{fill:var(--graphite)}
.illu .t{stroke:var(--chant);stroke-width:1.5;fill:none}
.illu .tf{fill:var(--chant)}
.illu .v{fill:var(--chant);fill-opacity:.12;stroke:var(--chant);stroke-width:2}
.illu .d{stroke:var(--acier);stroke-width:1;fill:none;stroke-dasharray:6 4}
.illu text{font-family:var(--f);font-size:13px;fill:var(--acier)}
.adresses{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin:0 0 1.5rem}
.adresse{border-top:3px solid var(--chant);padding-top:.8rem}
.adresse strong{display:block;font-stretch:115%}
.adresse a{font-size:.92rem;font-weight:600}
@media (max-width:520px){.adresses{grid-template-columns:1fr}}
.etapes{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;margin-top:2rem;counter-reset:s}
.etape{counter-increment:s}
.etape::before{content:"0" counter(s);display:block;font-stretch:125%;font-weight:800;font-size:2rem;color:var(--chant);line-height:1;margin-bottom:.6rem}
.etape h3{font-size:1.05rem}
.etape p{font-size:.95rem;color:#4a4244}
@media (max-width:860px){.etapes{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.etapes{grid-template-columns:1fr}}
footer .adr{margin-bottom:.7rem}footer .adr b{color:#fff;font-weight:600;display:block}

/* Logo */
.logo img{height:46px;width:auto;display:block}
.logo small{border-left:1px solid var(--trait);padding-left:.7rem}
@media (max-width:420px){.logo small{display:none}}
.logo-pied{height:92px;width:auto;margin-bottom:1rem}

/* Pièces jointes */
.facultatif{font-weight:400;color:var(--acier);font-size:.9rem}
.depot{display:block;border:2px dashed var(--trait);border-radius:6px;padding:1.1rem;background:var(--voile);cursor:pointer;font-weight:400;transition:border-color .2s}
.depot:hover,.depot.survol{border-color:var(--chant)}
.depot input{display:block;margin-bottom:.6rem;font:inherit;font-size:.9rem;max-width:100%;width:auto;border:0;padding:0;background:none}
.depot-txt{font-size:.9rem;color:var(--acier);font-weight:400}.depot-txt strong{color:var(--graphite)}
.fic-liste{list-style:none;padding:0;margin:.6rem 0 0;font-size:.9rem}
.fic-liste li{padding:.35rem 0;border-bottom:1px solid var(--trait)}
.fic-liste li.err{color:#b3261e;font-weight:600;border:0}

/* ===== v5 : photos et galeries Réalisations ===== */
.une{margin:0;border-radius:6px;overflow:hidden;aspect-ratio:4/3;background:var(--voile)}
.une img{width:100%;height:100%;object-fit:cover}
.vignette{display:block;border-radius:6px;overflow:hidden;aspect-ratio:4/3;background:var(--voile)}
.vignette img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.vignette:hover img{transform:scale(1.03)}
.galerie figure{margin:0}
.galerie a{display:block;border-radius:4px;overflow:hidden;aspect-ratio:4/3;background:var(--trait);cursor:zoom-in}
.galerie img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.galerie a:hover img{transform:scale(1.04)}
.galerie figcaption{font-size:.88rem;color:var(--acier);padding:.45rem 0 0}
@media (prefers-reduced-motion:reduce){.vignette img,.galerie img{transition:none}}
/* Visionneuse */
.visio{border:0;padding:0;background:transparent;max-width:100vw;max-height:100vh;width:100vw;height:100vh}
.visio::backdrop{background:rgba(20,16,17,.92)}
.visio figure{margin:0;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3.5rem 3.5rem 1.5rem}
.visio img{max-width:100%;max-height:calc(100vh - 7rem);width:auto;height:auto;object-fit:contain}
.visio figcaption{color:#f3eded;margin-top:.8rem;font-size:.95rem;text-align:center}
.visio button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:50%;width:3rem;height:3rem;font-size:1.6rem;line-height:1;cursor:pointer}
.visio button:hover{background:var(--chant)}
.visio .fermer{top:1rem;right:1rem}
.visio .prec{left:1rem;top:50%;transform:translateY(-50%)}
.visio .suiv{right:1rem;top:50%;transform:translateY(-50%)}
@media (max-width:640px){.visio figure{padding:3.5rem .5rem 1rem}.visio .prec,.visio .suiv{top:auto;bottom:1rem;transform:none}}
/* Plaques du hero : photo de l'univers derrière le verre */
.plaque[style*="--img"]{background:linear-gradient(180deg,rgba(255,255,255,.92) 0 2.9rem,rgba(255,255,255,.18) 2.9rem),var(--img) center/cover no-repeat}
.adresse .une{margin:0 0 .9rem}