/* ============================================================
   Agence Diot-Clément — D.A. « Duo Diot-Clément »
   Chaleureux, humain — le duo de fondatrices en scène.
   Feuille de style partagée du site multi-pages premium.
   Palette : blanc #FFFFFF · terracotta doux #C77B58 · anthracite #2E2E2E
   Fonts : DM Serif Display + Work Sans
   Maquette d'étude — ASALIS Consulting Group.
   ============================================================ */
:root{
  --blanc:#FFFFFF; --terracotta:#C77B58; --anthracite:#2E2E2E;
  --creme:#FBF7F3; --creme-2:#F3EAE2; --terracotta-fonce:#A9603F;
  --terracotta-clair:#E0A888; --gris:#7A7570; --encre:#2E2E2E;
  --trait:rgba(46,46,46,.13); --trait-clair:rgba(255,255,255,.20);
  --s2:16px; --s3:26px; --s4:56px; --s5:120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
/* Transitions inter-pages (progressive enhancement — Chrome/Edge récents) */
@view-transition{navigation:auto}
@media (prefers-reduced-motion:no-preference){
  ::view-transition-old(root){animation:vt-out .32s ease both}
  ::view-transition-new(root){animation:vt-in .42s ease both}
}
@keyframes vt-out{to{opacity:0}}
@keyframes vt-in{from{opacity:0}}
body{font-family:'Work Sans',sans-serif;font-size:16.5px;line-height:1.66;color:var(--encre);background:var(--blanc);-webkit-font-smoothing:antialiased}
h1,h2,h3,.serif{font-family:'DM Serif Display',serif;font-weight:400}
h1,h2,h3{line-height:1.08;letter-spacing:-.01em;color:var(--anthracite)}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1180px,90%);margin:0 auto}
.eyebrow{font-family:'Work Sans',sans-serif;font-size:11.5px;letter-spacing:.28em;text-transform:uppercase;font-weight:600;color:var(--terracotta)}

/* Header / nav multi-pages */
header{position:sticky;top:0;z-index:50;background:transparent;border-bottom:1px solid transparent;transition:background .45s ease,border-color .45s ease}
header::before{content:"";position:absolute;left:0;right:0;top:0;height:130px;background:linear-gradient(180deg,rgba(30,26,24,.5),rgba(30,26,24,0));z-index:-1;transition:opacity .45s;pointer-events:none}
header.solid{background:rgba(255,255,255,.93);backdrop-filter:blur(10px);border-bottom-color:var(--trait)}
header.solid::before{opacity:0}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:16px}
.logo{font-family:'DM Serif Display',serif;font-weight:400;font-size:23px;letter-spacing:.005em;color:#fff;white-space:nowrap;transition:color .45s ease;display:flex;align-items:center;gap:10px}
.logo .mono{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--terracotta);color:#fff;font-size:15px;letter-spacing:.02em;flex:0 0 auto}
.logo em{font-style:italic;color:var(--terracotta-clair);transition:color .45s ease}
.nav ul{display:none;list-style:none;gap:var(--s3);font-size:13.5px;font-weight:500;letter-spacing:.02em}
.nav ul a{color:rgba(255,255,255,.85);transition:color .3s;padding-bottom:3px;border-bottom:1px solid transparent}
.nav ul a:hover{color:#fff}
.nav ul a[aria-current="page"]{color:#fff;border-bottom-color:var(--terracotta-clair)}
.btn{display:inline-block;font-family:'Work Sans',sans-serif;font-weight:600;font-size:13.5px;letter-spacing:.02em;background:var(--terracotta);color:#fff;padding:13px 26px;border-radius:2px;transition:background .3s ease-out,color .3s,border-color .3s;cursor:pointer;border:none}
.btn:hover{background:var(--terracotta-fonce)}
.btn.ghost{background:transparent;border:1px solid var(--anthracite);color:var(--anthracite)}
.btn.ghost:hover{background:var(--anthracite);color:#fff}
/* Nav : bouton clair sur le héro, plein une fois "solid" */
header .btn{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.55)}
header .btn:hover{background:rgba(255,255,255,.26)}
header.solid .logo{color:var(--anthracite)}
header.solid .logo em{color:var(--terracotta)}
header.solid .nav ul a{color:var(--gris)}
header.solid .nav ul a:hover{color:var(--anthracite)}
header.solid .nav ul a[aria-current="page"]{color:var(--anthracite);border-bottom-color:var(--terracotta)}
header.solid .btn{background:var(--terracotta);color:#fff;border:1px solid var(--terracotta)}
header.solid .btn:hover{background:var(--terracotta-fonce);border-color:var(--terracotta-fonce)}

/* Image frame (liseré terracotta) */
.frame-dbl{position:relative;border:1px solid var(--trait)}
.frame-dbl::before{content:"";position:absolute;inset:-9px;border:1px solid var(--terracotta);pointer-events:none;z-index:1}
.frame-dbl figure{background:var(--creme);overflow:hidden;margin:0}
.frame-dbl img{width:100%;height:100%;object-fit:cover;display:block}

/* Hero cinématographique — fond photo plein écran + Ken Burns + overlay */
.hero-cine{position:relative;min-height:90vh;display:flex;align-items:flex-end;overflow:hidden;background:var(--anthracite)}
.hero-cine .bg{position:absolute;inset:0;z-index:0}
.hero-cine .bg img{width:100%;height:100%;object-fit:cover;transform-origin:center;animation:kenburns 20s ease-out both}
@keyframes kenburns{from{transform:scale(1.12)}to{transform:scale(1)}}
.hero-cine::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(30,26,24,.10) 0%,rgba(30,26,24,.34) 45%,rgba(30,26,24,.86) 100%)}
.hero-cine .wrap{position:relative;z-index:2;padding:var(--s5) 0 var(--s5);width:min(1180px,90%)}
.hero-cine .eyebrow{color:var(--terracotta-clair)}
.hero-cine h1{color:#fff;font-size:clamp(42px,7vw,90px);max-width:15em;margin-top:14px}
.hero-cine h1 em{font-style:italic;color:var(--terracotta-clair)}
.hero-cine .stand{font-size:19px;color:#f0eae4;max-width:34em;margin:var(--s3) 0}
.hero-cine .cta-row{display:flex;flex-wrap:wrap;gap:14px}
.hero-cine .btn.ghost{border-color:rgba(255,255,255,.7);color:#fff}
.hero-cine .btn.ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.hero-cine .meta{display:flex;flex-wrap:wrap;gap:14px 32px;margin-top:var(--s4);padding-top:var(--s3);border-top:1px solid rgba(255,255,255,.24);font-size:12.5px;font-weight:500;letter-spacing:.03em;color:#e2dcd4}
.hero-cine .meta b{color:#fff;font-family:'DM Serif Display',serif;font-weight:400}
.hero-cine .scroll-hint{position:absolute;left:50%;bottom:22px;z-index:2;transform:translateX(-50%);color:rgba(255,255,255,.7);font-size:11px;letter-spacing:.25em;text-transform:uppercase;animation:bob 2.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,7px)}}
/* Entrée à l'ouverture (cascade au-dessus de la ligne de flottaison) */
.hero-cine .up{opacity:0;transform:translateY(24px);animation:heroUp .9s cubic-bezier(.22,.61,.36,1) forwards}
.hero-cine .up.d1{animation-delay:.15s}.hero-cine .up.d2{animation-delay:.30s}.hero-cine .up.d3{animation-delay:.45s}.hero-cine .up.d4{animation-delay:.60s}
@keyframes heroUp{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  .hero-cine .bg img{animation:none}
  .hero-cine .up{opacity:1;transform:none;animation:none}
  .hero-cine .scroll-hint{animation:none}
}
/* Variante compacte pour les pages internes */
.hero-cine.compact{min-height:58vh}
.hero-cine.compact .wrap{padding:var(--s5) 0 var(--s4)}
.hero-cine.compact h1{font-size:clamp(38px,5.6vw,68px);max-width:16em}
.hero-cine.compact .scroll-hint{display:none}

/* Bande signature */
.signature{border-top:1px solid var(--trait);border-bottom:1px solid var(--trait);padding:22px 0;background:var(--creme)}
.signature .wrap{display:flex;flex-wrap:wrap;gap:14px 44px;justify-content:center;font-size:12px;letter-spacing:.18em;text-transform:uppercase;font-weight:600;color:var(--anthracite)}
.signature .wrap span{position:relative}

/* Duo — le cœur de la D.A. : les deux fondatrices */
.duo{padding:var(--s5) 0}
.duo .head{margin-bottom:var(--s4);max-width:38em}
.duo h2{font-size:clamp(30px,4.6vw,52px)}
.duo h2 em{font-style:italic;color:var(--terracotta)}
.duo .head p{font-size:17px;color:#4a4642;margin-top:16px}
.voices{display:grid;gap:var(--s4)}
.voice{background:var(--creme);border-left:3px solid var(--terracotta);padding:30px 30px}
.voice .who{display:flex;align-items:baseline;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.voice .who b{font-family:'DM Serif Display',serif;font-size:24px;color:var(--anthracite)}
.voice .who span{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--terracotta)}
.voice blockquote{font-family:'DM Serif Display',serif;font-style:italic;font-size:20px;line-height:1.4;color:var(--anthracite)}
.voice p{font-size:15.5px;color:#4a4642;margin-top:14px}

/* Book / projets (liste alternée) */
.book{padding:var(--s5) 0;border-top:1px solid var(--trait)}
.book .head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:var(--s4)}
.book h2{font-size:clamp(30px,4.8vw,54px)}
.book h2 em{font-style:italic;color:var(--terracotta)}
.book .head p{font-size:15px;color:var(--gris);max-width:26em}
.proj{display:grid;gap:var(--s4);align-items:center;padding:var(--s4) 0;border-top:1px solid var(--trait)}
.proj:nth-child(even) .frame-dbl{order:-1}
.proj .projimg{aspect-ratio:64/46}
.proj .num{font-family:'DM Serif Display',serif;font-style:italic;font-size:17px;color:var(--terracotta)}
.proj h3{font-size:clamp(26px,3.4vw,38px);margin:12px 0 16px;font-weight:400}
.proj p{font-size:16px;color:#4a4642;max-width:34em}
.proj .facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:var(--s3)}
.proj .facts span{font-size:12px;font-weight:600;color:var(--anthracite);border:1px solid var(--trait);padding:7px 16px;border-radius:2px}

/* Galerie grille (aperçus + lightbox) */
.grid-proj{display:grid;grid-template-columns:1fr;gap:var(--s3);padding:var(--s4) 0}
.card{position:relative;overflow:hidden;background:var(--creme);border:1px solid var(--trait)}
.card figure{margin:0;overflow:hidden;aspect-ratio:4/3;background:var(--creme)}
.card img{width:100%;height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.22,.61,.36,1);cursor:zoom-in}
.card:hover img{transform:scale(1.04)}
.card .cap{padding:20px 22px}
.card .cap .num{font-family:'DM Serif Display',serif;font-style:italic;font-size:14px;color:var(--terracotta)}
.card .cap h3{font-size:22px;margin-top:4px;font-weight:400}
.card .cap p{font-size:13.5px;color:var(--gris);margin-top:6px}

/* Projet complet (galerie par projet, réalisations) */
.projet-block{padding:var(--s4) 0;border-top:1px solid var(--trait)}
.projet-block .intro{max-width:44em;margin-bottom:var(--s4)}
.projet-block .cat{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--terracotta)}
.projet-block h2{font-size:clamp(28px,4vw,44px);margin:10px 0 14px}
.projet-block .intro p{font-size:16px;color:#4a4642}
.projet-gal{display:grid;grid-template-columns:1fr;gap:var(--s3)}
.projet-gal figure{margin:0;overflow:hidden;aspect-ratio:4/3;background:var(--creme);border:1px solid var(--trait)}
.projet-gal img{width:100%;height:100%;object-fit:cover;transition:transform .9s cubic-bezier(.22,.61,.36,1)}
.projet-gal figure:hover img{transform:scale(1.04)}

/* Bloc éditorial / méthode */
.prose{padding:var(--s4) 0 var(--s5)}
.prose .col{max-width:64ch}
.prose p{margin-bottom:var(--s3);font-size:17px;color:#3d3834}
.prose p .lead-in{font-family:'DM Serif Display',serif;font-size:1.08em;color:var(--anthracite)}
.method{display:grid;gap:2px;margin-top:var(--s4)}
.mcell{background:var(--creme);padding:28px 28px;border-left:3px solid var(--terracotta)}
.mcell .step{font-family:'DM Serif Display',serif;font-style:italic;font-size:16px;color:var(--terracotta);margin-bottom:6px}
.mcell b{display:block;font-family:'DM Serif Display',serif;font-size:20px;color:var(--anthracite);margin-bottom:6px;font-weight:400}
.mcell p{font-size:14.5px;color:var(--gris);margin:0}

/* Portraits fondatrices (agence) */
.founders{display:grid;gap:var(--s4);padding:var(--s4) 0 0}
.founder{background:var(--creme);padding:32px 30px;border-top:3px solid var(--terracotta)}
.founder .name{font-family:'DM Serif Display',serif;font-size:26px;color:var(--anthracite)}
.founder .role{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--terracotta);margin:6px 0 16px}
.founder p{font-size:15.5px;color:#4a4642}

/* Bandeau chaleureux (fond anthracite) */
.constat{background:var(--anthracite);color:#f2efeb;padding:var(--s5) 0}
.constat .eyebrow{color:var(--terracotta-clair)}
.constat h2{color:#fff;font-size:clamp(28px,4.4vw,46px);margin:12px 0 var(--s3);max-width:16em}
.constat h2 em{font-style:italic;color:var(--terracotta-clair)}
.constat p{font-size:16.5px;color:#cec8c0;max-width:36em}
.constat .quote{margin-top:var(--s4);border-top:1px solid var(--trait-clair);padding-top:var(--s4)}
.constat blockquote{font-family:'DM Serif Display',serif;font-style:italic;font-size:clamp(22px,3vw,30px);color:#fff;max-width:22em;line-height:1.32}
.constat cite{display:block;margin-top:14px;font-family:'Work Sans',sans-serif;font-style:normal;font-size:12.5px;font-weight:600;letter-spacing:.1em;color:var(--terracotta-clair)}

/* Livre d'or — « Ils nous ont fait confiance » */
.confiance{padding:var(--s4) 0 var(--s5)}
.ref-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;padding:var(--s4) 0}
.ref{background:var(--creme);padding:28px 26px;border-top:2px solid var(--terracotta);display:flex;flex-direction:column;gap:6px;min-height:150px;justify-content:center}
.ref .place{font-family:'DM Serif Display',serif;font-size:22px;color:var(--anthracite)}
.ref .det{font-size:13.5px;color:var(--gris)}
.ref .flag{font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--terracotta)}
.confiance .note{max-width:46em;font-size:16px;color:#4a4642}
.testis{display:grid;gap:var(--s3);margin-top:var(--s4)}
.testi{border-left:3px solid var(--terracotta);padding:6px 0 6px 22px}
.testi blockquote{font-family:'DM Serif Display',serif;font-style:italic;font-size:19px;color:var(--anthracite);line-height:1.4}
.testi cite{display:block;margin-top:10px;font-style:normal;font-size:12.5px;letter-spacing:.05em;font-weight:600;color:var(--gris)}

/* Contact */
.contact-grid{display:grid;gap:var(--s4);padding:var(--s4) 0 var(--s5)}
.cinfo b{display:block;font-family:'DM Serif Display',serif;font-size:20px;color:var(--anthracite);margin-bottom:6px;font-weight:400}
.cinfo p{font-size:16px;color:#3d3834;margin-bottom:var(--s3)}
.cinfo a{color:var(--anthracite);border-bottom:1px solid var(--terracotta)}
.serv{display:flex;flex-wrap:wrap;gap:9px;margin-top:8px}
.serv span{font-size:12.5px;color:var(--anthracite);border:1px solid var(--trait);padding:7px 15px;border-radius:2px}
form label{display:block;font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--anthracite);margin:16px 0 6px;text-transform:uppercase}
form input,form textarea{width:100%;font-family:inherit;font-size:15px;color:var(--encre);background:var(--creme);border:1px solid var(--trait);padding:13px 15px;border-radius:2px}
form input:focus,form textarea:focus{outline:none;border-color:var(--terracotta)}
form .btn{margin-top:22px}

/* Footer */
footer{background:var(--creme);color:#4a4642;padding:var(--s5) 0 var(--s4);font-size:15px;border-top:1px solid var(--trait)}
.foot-top{display:grid;gap:var(--s3);margin-bottom:var(--s4)}
.foot-top .big{font-family:'DM Serif Display',serif;font-size:clamp(30px,5vw,52px);color:var(--anthracite);line-height:1.1}
.foot-top .big em{font-style:italic;color:var(--terracotta)}
.foot{display:grid;gap:var(--s3)}
.foot b{display:block;color:var(--anthracite);font-family:'DM Serif Display',serif;font-size:18px;margin-bottom:8px;font-weight:400}
.foot a:hover{color:var(--terracotta)}
.foot ul{list-style:none;display:grid;gap:6px;font-size:14px}
.legal{border-top:1px solid var(--trait);margin-top:var(--s4);padding-top:var(--s3);font-size:12px;color:var(--gris);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between}

/* Badge maquette */
.badge-asalis{position:fixed;left:14px;bottom:14px;z-index:60;font-family:'Work Sans',sans-serif;font-size:11px;background:rgba(46,46,46,.92);color:#fff;padding:7px 14px;border-radius:2px}

/* Lightbox galerie */
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(30,26,24,.94);display:flex;align-items:center;justify-content:center;padding:6vh 5vw;cursor:zoom-out;opacity:0;visibility:hidden;transition:opacity .3s ease}
.lightbox.open{opacity:1;visibility:visible}
.lightbox img{max-width:100%;max-height:88vh;object-fit:contain;box-shadow:0 24px 70px rgba(0,0,0,.55);transform:scale(.97);transition:transform .3s ease}
.lightbox.open img{transform:scale(1)}
.lightbox .lb-cap{position:absolute;bottom:26px;left:0;right:0;text-align:center;color:#fff;font-size:13px;letter-spacing:.04em;padding:0 20px}
.lightbox .lb-close{position:absolute;top:20px;right:28px;color:#fff;font-size:34px;line-height:1;cursor:pointer;opacity:.8}
.lightbox .lb-close:hover{opacity:1;color:var(--terracotta-clair)}

/* Reveal */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s cubic-bezier(.22,.61,.36,1)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .rv{opacity:1;transform:none;transition:none}}

@media (min-width:760px){
  .grid-proj{grid-template-columns:repeat(2,1fr);gap:var(--s3)}
  .projet-gal{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:860px){
  .nav ul{display:flex}
  .voices{grid-template-columns:1fr 1fr}
  .proj{grid-template-columns:1fr 1fr;gap:var(--s5)}
  .method{grid-template-columns:repeat(3,1fr)}
  .founders{grid-template-columns:1fr 1fr}
  .ref-grid{grid-template-columns:repeat(3,1fr)}
  .testis{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr 1fr;gap:var(--s5)}
  .foot{grid-template-columns:1.4fr 1fr 1fr 1fr}
}