/* =========================================================
   COTRAS GROUP SARL (CGS) — feuille de style
   Charte issue de la plaquette : bleu roi, gris anthracite,
   formes en biais, soulignés bleus.
   ========================================================= */

:root{
  --blue:        #2848A3;
  --blue-dark:   #1D3577;
  --blue-light:  #3D6BC4;
  --blue-pale:   #E8EEFA;
  --grey:        #5A5D63;
  --grey-dark:   #35383D;
  --ink:         #14181F;
  --body:        #4C5158;
  --bg:          #FFFFFF;
  --bg-alt:      #F2F4F8;
  --line:        #E2E7F0;
  --white:       #FFFFFF;
  --wa:          #25D366;

  --radius:      14px;
  --radius-lg:   22px;
  --shadow-sm:   0 2px 10px rgba(20,24,31,.06);
  --shadow:      0 14px 40px rgba(20,24,31,.09);
  --shadow-lg:   0 28px 70px rgba(29,53,119,.18);

  --wrap:        1200px;
  --head-h:      82px;

  --f-title: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --f-body:  'Poppins', 'Segoe UI', system-ui, sans-serif;

  --ease: cubic-bezier(.22,.68,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 12px);-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
/* <picture> ne doit pas exister pour la mise en page : ainsi toutes les
   règles CSS qui ciblent img continuent de s'appliquer telles quelles. */
picture{display:contents}
a{color:var(--blue);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--blue-dark)}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{font-family:var(--f-title);color:var(--ink);line-height:1.14;margin:0;letter-spacing:-.015em}
p{margin:0 0 1.05em}
:focus-visible{outline:3px solid var(--blue-light);outline-offset:3px;border-radius:4px}

.wrap{width:min(100% - 2.5rem, var(--wrap));margin-inline:auto}

/* =========================================================
   FOND ANIMÉ
   Calque décoratif fixe, derrière tout le contenu.
   `pointer-events:none` est OBLIGATOIRE : sans lui, ce calque
   plein écran intercepterait tous les clics du site.
   ========================================================= */
html{background:var(--bg)}
body{background:transparent}
.bg-anim{
  position:fixed;inset:0;z-index:0;overflow:hidden;
  pointer-events:none;   /* ← ne jamais retirer */
  contain:layout paint style;
}
.bg-anim .blob{
  position:absolute;display:block;will-change:transform;
  transform:translate3d(calc(var(--mx,0) * 1px), calc(var(--my,0) * 1px), 0);
}
.bg-anim .blob i{
  display:block;width:100%;height:100%;border-radius:50%;
  filter:blur(90px);opacity:.78;
}
.bg-anim .b1{top:-14vh;left:-8vw;width:58vw;height:58vw;--mx:0;--my:0}
.bg-anim .b1 i{background:radial-gradient(circle at 40% 40%, #4C7BD9 0%, rgba(76,123,217,0) 68%);animation:derive1 26s ease-in-out infinite}
.bg-anim .b2{top:34vh;right:-16vw;width:52vw;height:52vw}
.bg-anim .b2 i{background:radial-gradient(circle at 55% 45%, #7FA6E8 0%, rgba(127,166,232,0) 66%);animation:derive2 32s ease-in-out infinite}
.bg-anim .b3{bottom:-18vh;left:22vw;width:46vw;height:46vw}
.bg-anim .b3 i{background:radial-gradient(circle at 50% 50%, #9FB4CE 0%, rgba(159,180,206,0) 64%);animation:derive3 38s ease-in-out infinite}
/* voile : garde le texte parfaitement lisible par-dessus les nappes */
.bg-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.28),rgba(255,255,255,.46))}

@keyframes derive1{0%,100%{translate:0 0}33%{translate:5vw 4vh}66%{translate:-3vw 6vh}}
@keyframes derive2{0%,100%{translate:0 0}33%{translate:-6vw 5vh}66%{translate:3vw -4vh}}
@keyframes derive3{0%,100%{translate:0 0}50%{translate:6vw -5vh}}

/* Le contenu passe au-dessus du fond */
.site-header,main,.site-footer{position:relative;z-index:1}

/* Sections translucides : les nappes transparaissent en douceur.
   Ne pas descendre sous ~0.65 : le texte perdrait en lisibilité. */
.section{background:rgba(255,255,255,.72)}
.section-alt{background:rgba(240,243,248,.74)}
.contact{background:rgba(255,255,255,.72)}

/* =========================================================
   BARRE DE PROGRESSION DE LECTURE
   ========================================================= */
.progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:101;
  pointer-events:none;background:rgba(40,72,163,.10);
}
.progress span{
  display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--blue-dark),var(--blue) 45%,var(--blue-light));
  box-shadow:0 0 12px rgba(61,107,196,.55);
}

/* =========================================================
   RAIL D'INDICATION DE SECTION
   Conteneur transparent aux clics ; seuls les points sont cliquables.
   ========================================================= */
.rail{
  position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:80;
  pointer-events:none;   /* ← le conteneur ne doit rien intercepter */
}
.rail ul{display:flex;flex-direction:column;gap:.15rem}
.rail a{
  pointer-events:auto;                 /* seuls les points captent la souris */
  display:flex;align-items:center;justify-content:flex-end;gap:.7rem;
  padding:.42rem 0;text-decoration:none;
}
.rail em{
  font-style:normal;font-family:var(--f-title);font-size:.76rem;font-weight:600;
  letter-spacing:.04em;color:var(--blue-dark);white-space:nowrap;
  background:rgba(255,255,255,.92);border:1px solid var(--line);
  padding:.3rem .6rem;border-radius:7px;box-shadow:var(--shadow-sm);
  opacity:0;transform:translateX(8px);transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.rail span{
  position:relative;display:block;width:10px;height:10px;border-radius:99px;
  background:rgba(40,72,163,.22);
  transition:height .38s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.rail a:hover em,.rail a:focus-visible em{opacity:1;transform:none}
.rail a:hover span{background:rgba(40,72,163,.5)}
.rail a.active span{
  height:30px;background:linear-gradient(180deg,var(--blue),var(--blue-light));
  box-shadow:0 0 0 4px rgba(40,72,163,.13);
}
.rail a.active em{opacity:1;transform:none;color:var(--blue)}

/* =========================================================
   FEUILLE DE TRANSITION (au clic sur un lien de section)
   Mêmes précautions que la visionneuse : le calque est plein
   écran, il ne doit JAMAIS pouvoir capter un clic.
   ========================================================= */
.pageturn[hidden]{display:none}
.pageturn{
  position:fixed;inset:0;z-index:150;
  pointer-events:none;          /* ← ne jamais retirer */
  perspective:1700px;overflow:hidden;
}
.pageturn-sheet{
  position:absolute;inset:0;display:block;
  transform-origin:left center;transform:rotateY(-78deg);opacity:0;
  background:linear-gradient(118deg,#FAFBFD 0%,#E9EFFA 42%,#CBD9F1 100%);
  box-shadow:0 0 90px rgba(18,28,58,.42);
  backface-visibility:hidden;will-change:transform,opacity;
}
/* rappel des obliques de la plaquette, sur la feuille */
.pageturn-sheet b{
  position:absolute;top:0;right:0;width:46%;height:100%;display:block;
  background:linear-gradient(118deg,transparent 0 42%,rgba(40,72,163,.10) 42% 62%,transparent 62%),
             linear-gradient(118deg,transparent 0 66%,rgba(53,56,61,.09) 66% 78%,transparent 78%);
}
.pageturn.tourne-entree .pageturn-sheet{
  animation:feuilleEntree .2s cubic-bezier(.22,.61,.36,1) forwards;
}
.pageturn.tourne-sortie .pageturn-sheet{
  transform-origin:right center;
  animation:feuilleSortie .24s cubic-bezier(.55,.06,.68,.19) forwards;
}
/* Le fondu accompagne la rotation : sans lui, la feuille montre une tranche
   très fine au démarrage, ce qui donne un mouvement sec. */
@keyframes feuilleEntree{
  from{transform:rotateY(-78deg);opacity:0}
  55% {opacity:1}
  to  {transform:rotateY(0);opacity:1}
}
@keyframes feuilleSortie{
  from{transform:rotateY(0);opacity:1}
  45% {opacity:1}
  to  {transform:rotateY(78deg);opacity:0}
}to{transform:rotateY(93deg)}}

/* =========================================================
   ENTRÉES DE SECTION
   ========================================================= */
.reveal[data-anim="left"]{transform:translateX(-34px)}
.reveal[data-anim="right"]{transform:translateX(34px)}
.reveal[data-anim="zoom"]{transform:scale(.94)}
.reveal.visible{transform:none}

/* Bascule « feuille qui se pose » : le bloc pivote autour de son bord haut
   avant de se poser à plat. Réservé au bureau — trop de transformations 3D
   simultanées ralentissent les téléphones d'entrée de gamme. */
@media (min-width:981px){
  .reveal[data-anim="flip"]{
    transform:perspective(1300px) rotateX(11deg) translateY(24px);
    transform-origin:50% 0;
  }
  .reveal[data-anim="flip"].visible{transform:none}
}
/* décalage en cascade, calculé en JS section par section */
.reveal{transition-delay:calc(var(--d,0) * 65ms)}
/* le trait bleu se déploie à l'entrée */
.rule{width:0;transition:width .7s var(--ease) .15s}
.visible .rule,.rule.visible{width:76px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--blue);color:#fff;padding:.8rem 1.2rem;border-radius:0 0 8px 0;font-weight:600;
}
.skip-link:focus{left:0}

/* ---------- Boutons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  font-family:var(--f-title);font-weight:600;font-size:.95rem;letter-spacing:.01em;
  padding:.92rem 1.7rem;border-radius:10px;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-light) 100%);
  color:#fff;box-shadow:0 10px 26px rgba(40,72,163,.32);
}
.btn-primary:hover{color:#fff;transform:translateY(-3px);box-shadow:0 18px 38px rgba(40,72,163,.42)}
.btn-ghost{border:1.6px solid rgba(40,72,163,.32);color:var(--blue);background:rgba(255,255,255,.6);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:var(--blue);color:#fff;border-color:var(--blue);transform:translateY(-3px)}
.btn-sm{padding:.62rem 1.15rem;font-size:.86rem;border-radius:8px}
.btn-block{width:100%;margin-top:.4rem}

/* ---------- Header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;height:var(--head-h);
  display:flex;align-items:center;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid transparent;
  transition:height .3s var(--ease), background .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.site-header.scrolled{height:68px;background:rgba(255,255,255,.94);box-shadow:0 6px 26px rgba(20,24,31,.08);border-bottom-color:var(--line)}
/* s'efface quand on descend, revient dès qu'on remonte */
.site-header{transform:translateY(0);transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease),transform .35s var(--ease)}
.site-header.hidden{transform:translateY(-105%)}
.header-inner{display:flex;align-items:center;gap:1.4rem;width:min(100% - 2.5rem, 1320px)}

.brand{display:flex;align-items:center;gap:.65rem;flex-shrink:0}
.brand img{height:46px;width:auto;transition:height .3s var(--ease)}
.site-header.scrolled .brand img{height:38px}
.brand-txt{display:flex;flex-direction:column;line-height:1.05}
.brand-txt strong{font-family:var(--f-title);font-size:1.32rem;font-weight:800;color:var(--blue);letter-spacing:.02em}
.brand-txt em{font-style:normal;font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--grey);font-weight:500}

.nav{margin-left:auto}
.nav ul{display:flex;align-items:center;gap:.15rem}
.nav a{
  display:block;padding:.55rem .78rem;border-radius:8px;
  font-size:.875rem;font-weight:500;color:var(--grey-dark);position:relative;
}
.nav a::after{
  content:"";position:absolute;left:.78rem;right:.78rem;bottom:.28rem;height:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav a:hover{color:var(--blue)}
.nav a:hover::after,.nav a.active::after{transform:scaleX(1)}
.nav a.active{color:var(--blue);font-weight:600}

.header-actions{display:flex;align-items:center;gap:.85rem}
.lang{display:flex;align-items:center;gap:.3rem;font-size:.8rem;color:var(--grey)}
.lang-btn{font-family:var(--f-title);font-weight:600;padding:.2rem .3rem;border-radius:5px;color:var(--grey);transition:color .2s}
.lang-btn.is-active{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
.lang-btn:hover{color:var(--blue-dark)}

.burger{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:9px}
.burger span{display:block;width:23px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Formes décoratives (biais de la plaquette) ---------- */
.shape{position:absolute;pointer-events:none;z-index:0}
.shape-blue{
  top:0;right:0;width:230px;height:150px;
  background:var(--blue);
  clip-path:polygon(38% 0,100% 0,100% 100%,0 100%);
  opacity:.95;
}
.shape-grey{
  top:0;right:0;width:290px;height:200px;
  background:var(--grey);
  clip-path:polygon(84% 0,100% 0,64% 100%,48% 100%);
  opacity:.85;
}
.shape-blue-2{
  bottom:0;left:0;width:200px;height:130px;background:var(--blue);
  clip-path:polygon(0 0,60% 0,100% 100%,0 100%);opacity:.08;
}

/* ---------- Titres de section ---------- */
.kicker{
  font-family:var(--f-title);font-size:.74rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--blue);margin-bottom:.6rem;
}
.rule{display:block;width:76px;height:5px;background:var(--blue);border-radius:3px;margin:1.15rem 0 1.6rem}
.accent{color:var(--blue)}
.section{position:relative;padding:clamp(4.5rem,9vw,7.5rem) 0;overflow:hidden}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:3.2rem}
.section-head .rule{margin-inline:0}
.section h2{font-size:clamp(2rem,4.4vw,3.1rem);font-weight:800;text-transform:uppercase}
.section-intro{font-size:1.06rem;color:var(--grey)}

/* ---------- HERO ---------- */
.hero{
  position:relative;padding:calc(var(--head-h) + clamp(3rem,7vw,5.5rem)) 0 0;
  background:
    radial-gradient(1100px 620px at 88% -10%, rgba(61,107,196,.12), transparent 62%),
    linear-gradient(170deg,rgba(250,251,253,.66) 0%,rgba(238,242,249,.72) 100%);
  overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(2rem,5vw,4.5rem);
  align-items:center;position:relative;z-index:2;padding-bottom:clamp(3rem,6vw,5rem);
}
.eyebrow{
  font-family:var(--f-title);font-size:.76rem;font-weight:600;letter-spacing:.2em;
  text-transform:uppercase;color:var(--grey);margin-bottom:1rem;
  display:inline-flex;align-items:center;gap:.6rem;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--blue)}
.hero h1{
  font-size:clamp(2.1rem,7vw,4.15rem);font-weight:800;text-transform:uppercase;
  letter-spacing:-.02em;line-height:1.06;
}
.hero .lead{font-size:clamp(1.02rem,1.6vw,1.19rem);max-width:34ch;color:var(--grey-dark)}
.hero-btns{display:flex;flex-wrap:wrap;gap:.85rem;margin-top:2rem}

.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  clip-path:polygon(0 0,100% 0,100% 88%,0 100%);
  aspect-ratio:6/5;object-fit:cover;
}
.hero-badge{
  position:absolute;left:-18px;bottom:34px;
  background:#fff;border-radius:var(--radius);padding:1.05rem 1.4rem;
  box-shadow:var(--shadow);display:flex;flex-direction:column;line-height:1.15;
  border-left:5px solid var(--blue);
}
.hero-badge strong{font-family:var(--f-title);font-size:2rem;font-weight:800;color:var(--blue)}
.hero-badge span{font-size:.75rem;letter-spacing:.09em;text-transform:uppercase;color:var(--grey);font-weight:500}

/* bandeau défilant */
.marquee{
  position:relative;z-index:2;overflow:hidden;
  background:linear-gradient(90deg,var(--blue) 0%,var(--blue-dark) 100%);
  padding:.95rem 0;
}
.marquee-track{display:flex;width:max-content;animation:slide 38s linear infinite}
.marquee-track span{
  color:rgba(255,255,255,.94);font-family:var(--f-title);font-weight:600;
  font-size:.86rem;letter-spacing:.14em;text-transform:uppercase;padding:0 2.2rem;
  display:inline-flex;align-items:center;
}
.marquee-track span::after{content:"";width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.45);margin-left:2.2rem}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- À PROPOS ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.about-copy p{max-width:60ch}
.pull{
  font-family:var(--f-title);font-size:1.24rem;font-weight:700;color:var(--blue);
  border-left:5px solid var(--blue);padding:.35rem 0 .35rem 1.15rem;margin-top:1.8rem;line-height:1.4;
}
.facts{display:flex;flex-wrap:wrap;gap:2.4rem;margin-top:2.4rem;padding-top:2rem;border-top:1px solid var(--line)}
.facts li{display:flex;flex-direction:column}
.facts strong{font-family:var(--f-title);font-size:2.15rem;font-weight:800;color:var(--blue);line-height:1}
.facts span{font-size:.79rem;letter-spacing:.08em;text-transform:uppercase;color:var(--grey);margin-top:.3rem}

/* Les lignes sont proportionnelles à la largeur (aspect-ratio) : les vignettes
   gardent les mêmes proportions du mobile au grand écran. */
.about-collage{
  display:grid;grid-template-columns:repeat(6,1fr);grid-template-rows:repeat(6,1fr);
  aspect-ratio:11/15;gap:12px;
}
.about-collage img{
  width:100%;height:100%;object-fit:cover;border-radius:12px;box-shadow:var(--shadow-sm);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease);
}
.about-collage img:hover{transform:translateY(-6px) scale(1.02);box-shadow:var(--shadow)}
.about-collage .c1{grid-column:1/5;grid-row:1/3}
.about-collage .c2{grid-column:5/7;grid-row:1/3}
.about-collage .c3{grid-column:1/3;grid-row:3/5}
.about-collage .c4{grid-column:3/7;grid-row:3/5}
.about-collage .c5{grid-column:1/4;grid-row:5/7}
.about-collage .c6{grid-column:4/7;grid-row:5/7}

/* ---------- VISION / MISSION / VALEURS ---------- */
.vm-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.6rem;margin-bottom:4rem}
.vm-card{
  background:#fff;border-radius:var(--radius-lg);padding:2.4rem 2.2rem;
  box-shadow:var(--shadow-sm);border:1px solid var(--line);position:relative;overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.vm-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--blue),var(--blue-light));
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
.vm-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.vm-card:hover::before{transform:scaleX(1)}
.vm-icon{
  width:60px;height:60px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--blue-light));color:#fff;margin-bottom:1.3rem;
  box-shadow:0 8px 20px rgba(40,72,163,.28);
}
.vm-icon svg{width:29px;height:29px}
.vm-card h3{font-size:1.4rem;font-weight:700;text-transform:uppercase;color:var(--blue);margin-bottom:.85rem;letter-spacing:.01em}
.vm-card p{margin:0;font-size:.98rem}

.values-title{
  font-size:clamp(1.5rem,2.6vw,2rem);font-weight:800;text-transform:uppercase;
  color:var(--ink);margin-bottom:2rem;position:relative;padding-bottom:.9rem;
}
.values-title::after{content:"";position:absolute;left:0;bottom:0;width:60px;height:4px;background:var(--blue);border-radius:3px}
.values{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1.2rem}
.value{
  background:#fff;border-radius:var(--radius);padding:1.9rem 1.5rem;text-align:center;
  border:1px solid var(--line);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.value:hover{transform:translateY(-7px);box-shadow:var(--shadow);border-color:transparent}
.v-icon{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;margin:0 auto 1.05rem;
  background:var(--blue-pale);color:var(--blue);transition:background .35s var(--ease),color .35s var(--ease);
}
.value:hover .v-icon{background:var(--blue);color:#fff}
.v-icon svg{width:27px;height:27px}
/* « PROFESSIONNALISME » est un mot long et insécable : interlettrage réduit
   et césure automatique pour qu'il ne déborde jamais de sa carte. */
.value h4{
  font-size:.83rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--blue);margin-bottom:.6rem;
  hyphens:auto;overflow-wrap:break-word;
}
.value p{margin:0;font-size:.9rem;line-height:1.65}

.banner{
  margin-top:clamp(3.5rem,7vw,5.5rem);margin-bottom:calc(-1 * clamp(4.5rem,9vw,7.5rem));
  background:linear-gradient(90deg,var(--blue-dark),var(--blue) 50%,var(--blue-light));
  padding:1.5rem 0;
}
.banner p{
  margin:0;text-align:center;color:#fff;font-family:var(--f-title);font-weight:600;
  font-size:clamp(.86rem,1.7vw,1.06rem);letter-spacing:.09em;text-transform:uppercase;
}

/* ---------- EXPERTISES ---------- */
.exp-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.4rem}
.exp-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:2rem 1.75rem;position:relative;overflow:hidden;
  transition:transform .38s var(--ease),box-shadow .38s var(--ease),border-color .38s;
}
.exp-card::after{
  content:"";position:absolute;top:-70px;right:-70px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(61,107,196,.12),transparent 70%);
  transition:transform .55s var(--ease);transform:scale(0);
}
.exp-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:transparent}
.exp-card:hover::after{transform:scale(1)}
.exp-icon{
  width:58px;height:58px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--blue-light));color:#fff;margin-bottom:1.25rem;
  box-shadow:0 8px 20px rgba(40,72,163,.26);position:relative;z-index:1;
  transition:transform .38s var(--ease);
}
.exp-card:hover .exp-icon{transform:rotate(-7deg) scale(1.06)}
.exp-icon svg{width:28px;height:28px}
.exp-card h3{
  font-size:1.06rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
  color:var(--blue);margin-bottom:1rem;position:relative;z-index:1;
}
.exp-card ul{position:relative;z-index:1}
.exp-card li{
  position:relative;padding-left:1.35rem;margin-bottom:.62rem;font-size:.92rem;line-height:1.6;
}
.exp-card li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--blue);transform:rotate(45deg);
}

/* ---------- RÉALISATIONS ---------- */
.filters{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:2.2rem}
.filter{
  padding:.6rem 1.25rem;border-radius:999px;border:1.5px solid var(--line);background:#fff;
  font-family:var(--f-title);font-size:.85rem;font-weight:600;color:var(--grey-dark);
  transition:all .28s var(--ease);
}
.filter:hover{border-color:var(--blue);color:var(--blue)}
.filter.is-active{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(40,72,163,.26)}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:1.2rem}
.g-item{
  margin:0;position:relative;overflow:hidden;border-radius:var(--radius);cursor:pointer;
  aspect-ratio:4/3;background:var(--grey-dark);box-shadow:var(--shadow-sm);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),opacity .3s,scale .3s;
}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease),filter .4s}
.g-item::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(to top,rgba(20,28,55,.9) 0%,rgba(20,28,55,.25) 45%,transparent 70%);
  opacity:.86;transition:opacity .4s;
}
.g-item:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.g-item:hover img{transform:scale(1.09)}
.g-item:hover::before{opacity:.95}
.g-item figcaption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:1.2rem 1.3rem;
  display:flex;flex-direction:column;gap:.15rem;
}
.g-item figcaption strong{
  font-family:var(--f-title);font-size:1rem;font-weight:700;color:#fff;letter-spacing:.01em;
}
.g-item figcaption span{font-size:.8rem;color:rgba(255,255,255,.8)}
.g-item.is-hidden{display:none}
.note{
  margin-top:1.8rem;font-size:.86rem;color:var(--grey);
  background:var(--blue-pale);border-left:4px solid var(--blue);border-radius:0 8px 8px 0;
  padding:.9rem 1.1rem;
}
.note code{background:rgba(40,72,163,.12);padding:.1rem .4rem;border-radius:4px;font-size:.94em}

/* ---------- POURQUOI CGS ---------- */
.why{background:linear-gradient(160deg,rgba(250,251,253,.70),rgba(237,241,248,.74))}
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.why-list{margin-top:.5rem;display:grid;gap:1.6rem}
.why-list li{display:flex;gap:1.1rem;align-items:flex-start}
.check{
  flex-shrink:0;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:2px solid var(--blue);color:var(--blue);background:#fff;
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.why-list li:hover .check{background:var(--blue);color:#fff;transform:scale(1.08)}
.check svg{width:21px;height:21px}
.why-list h3{
  font-size:1rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;
  color:var(--blue);margin-bottom:.35rem;
}
.why-list p{margin:0;font-size:.95rem}

.why-media{position:relative;padding-bottom:60px}
.why-media-1{
  width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  clip-path:polygon(0 0,100% 0,100% 100%,0 90%);aspect-ratio:10/9;object-fit:cover;
}
.why-media-2{
  position:absolute;right:-10px;bottom:0;width:52%;
  border-radius:var(--radius);box-shadow:var(--shadow);border:6px solid #fff;
  aspect-ratio:4/3;object-fit:cover;
}

/* ---------- CONTACT ---------- */
.contact{background:#fff}
.contact-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(2rem,5vw,4rem);align-items:start;position:relative;z-index:2}
.contact h2{font-size:clamp(1.7rem,3.2vw,2.45rem);text-transform:none}
.contact .lead{font-size:1.05rem;max-width:42ch}

.coord{display:grid;gap:1.1rem;margin-top:2.2rem}
.coord li{display:flex;gap:1rem;align-items:flex-start}
.ci{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--blue-pale);color:var(--blue);transition:background .3s,color .3s;
}
.coord li:hover .ci{background:var(--blue);color:#fff}
.ci-wa{background:rgba(37,211,102,.14);color:#128C4B}
.coord li:hover .ci-wa{background:var(--wa);color:#fff}
.ci svg{width:22px;height:22px}
.coord small{
  display:block;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--grey);font-weight:500;margin-bottom:.1rem;
}
.coord a,.coord div>span{display:block;font-weight:500;color:var(--ink);font-size:.98rem}
.coord a:hover{color:var(--blue)}

.socials{display:flex;gap:.6rem;margin-top:2rem}
.socials a{
  width:44px;height:44px;border-radius:11px;display:grid;place-items:center;
  background:var(--bg-alt);color:var(--grey-dark);transition:all .28s var(--ease);
}
.socials a:hover{background:var(--blue);color:#fff;transform:translateY(-3px)}
.socials svg{width:19px;height:19px}

.contact-form-wrap{position:relative}
.contact-form{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(1.7rem,3vw,2.5rem);box-shadow:var(--shadow);
}
.contact-form h3{font-size:1.35rem;font-weight:700;margin-bottom:1.5rem;color:var(--ink)}
.contact-form .row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin-bottom:1.05rem;display:flex;flex-direction:column}
.field label{
  font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--grey-dark);margin-bottom:.4rem;
}
.field input,.field select,.field textarea{
  font-family:var(--f-body);font-size:.95rem;color:var(--ink);
  padding:.8rem .95rem;border:1.5px solid var(--line);border-radius:10px;background:#FBFCFE;
  transition:border-color .25s,box-shadow .25s,background .25s;width:100%;
}
.field textarea{resize:vertical;min-height:120px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(40,72,163,.12);
}
.field input.invalid,.field select.invalid,.field textarea.invalid{border-color:#D64545;box-shadow:0 0 0 4px rgba(214,69,69,.1)}
.gotcha{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}
.form-msg{margin:.9rem 0 0;font-size:.9rem;font-weight:500;min-height:1.2em}
.form-msg.ok{color:#12794A}
.form-msg.err{color:#C0392B}
.form-alt{margin:.9rem 0 0;font-size:.86rem;color:var(--grey);text-align:center}

.map-wrap{
  margin-top:clamp(3rem,6vw,4.5rem);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);width:min(100% - 2.5rem, var(--wrap));margin-inline:auto;
  filter:grayscale(.35) contrast(1.03);transition:filter .4s var(--ease);
}
.map-wrap:hover{filter:none}
.map-wrap iframe{display:block;border:0}

/* Écran d'attente de la carte (aucun appel à Google avant le clic) */
.map-holder{
  position:relative;height:380px;display:grid;place-items:center;
  background:linear-gradient(160deg,#EDF1F8,#DFE7F4);overflow:hidden;
}
.map-deco{position:absolute;inset:0;opacity:.5}
.map-deco::before,.map-deco::after{
  content:"";position:absolute;inset:-20%;
  background-image:
    linear-gradient(rgba(40,72,163,.16) 2px, transparent 2px),
    linear-gradient(90deg, rgba(40,72,163,.16) 2px, transparent 2px);
  background-size:78px 78px;
}
.map-deco::after{
  background-image:
    linear-gradient(rgba(40,72,163,.30) 5px, transparent 5px),
    linear-gradient(90deg, rgba(40,72,163,.30) 5px, transparent 5px);
  background-size:280px 280px;transform:rotate(-8deg);
}
.map-pin{
  position:absolute;left:50%;top:44%;width:20px;height:20px;margin:-10px 0 0 -10px;
  border-radius:50% 50% 50% 0;background:var(--blue);transform:rotate(-45deg);
  box-shadow:0 6px 16px rgba(29,53,119,.4);
}
.map-pin::after{
  content:"";position:absolute;inset:-14px;border-radius:50%;
  border:2px solid rgba(40,72,163,.45);animation:ondePin 2.6s ease-out infinite;
}
@keyframes ondePin{0%{transform:scale(.6);opacity:.85}100%{transform:scale(1.7);opacity:0}}

.map-msg{
  position:relative;z-index:1;text-align:center;max-width:430px;padding:1.6rem;
  background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.map-msg strong{display:block;font-family:var(--f-title);font-size:1.02rem;color:var(--ink);margin-bottom:.45rem}
.map-msg p{font-size:.86rem;color:var(--grey);margin-bottom:1rem;line-height:1.6}
.map-alt{display:block;margin-top:.85rem;font-size:.82rem;color:var(--grey)}
.map-alt:hover{color:var(--blue)}

/* ---------- FOOTER ---------- */
.site-footer{background:var(--grey-dark);color:rgba(255,255,255,.72);padding:clamp(3.2rem,6vw,4.5rem) 0 0;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2.5rem;padding-bottom:3rem}
.f-brand img{height:64px;width:auto;margin-bottom:1.1rem;opacity:.96}
.f-brand p{margin-bottom:.7rem;color:rgba(255,255,255,.86);font-family:var(--f-title);font-weight:500}
.f-sub{font-family:var(--f-body)!important;font-weight:400!important;font-size:.8rem;color:rgba(255,255,255,.5)!important;line-height:1.7}
.f-col h4{
  font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:#fff;margin-bottom:1.1rem;position:relative;padding-bottom:.7rem;
}
.f-col h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:3px;background:var(--blue-light);border-radius:2px}
.f-col li{margin-bottom:.55rem;line-height:1.6}
.f-col a{color:rgba(255,255,255,.72)}
.f-col a:hover{color:#fff}
.f-legal li{font-size:.86rem;color:rgba(255,255,255,.6)}

/* La marge basse réserve la place des boutons flottants (WhatsApp à droite,
   retour en haut à gauche) : sans elle, ils recouvrent cette rangée une fois
   la page défilée jusqu'en bas, et ses liens deviennent incliquables. */
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;
  padding:1.4rem 0 5.5rem;border-top:1px solid rgba(255,255,255,.12);
}
.footer-bottom p{margin:0;font-size:.84rem;color:rgba(255,255,255,.55)}
/* Sans cette règle, un lien de la rangée basse hérite du bleu des liens
   du site et devient illisible sur le fond anthracite du pied de page. */
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}
.f-socials{display:flex;gap:.5rem}
.f-socials a{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,255,255,.1);color:rgba(255,255,255,.8);transition:all .25s var(--ease);
}
.f-socials a:hover{background:var(--blue);color:#fff}
.f-socials svg{width:16px;height:16px}

/* ---------- Page mentions légales ---------- */
.legal{padding-top:calc(var(--head-h) + 3.5rem)}
.legal-wrap{max-width:820px}
.legal h1{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800}
.legal h2{
  font-family:var(--f-title);font-size:1.06rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.05em;color:var(--blue);margin:2.4rem 0 .8rem;
}
.legal p{max-width:70ch}
.legal-date{font-size:.86rem;color:var(--grey);margin-top:2.4rem;padding-top:1.2rem;border-top:1px solid var(--line)}

/* ---------- WhatsApp flottant + retour haut ---------- */
.wa-float{
  position:fixed;right:22px;bottom:22px;z-index:90;
  display:inline-flex;align-items:center;gap:.55rem;
  background:var(--wa);color:#fff;padding:.78rem 1.1rem;border-radius:999px;
  font-family:var(--f-title);font-weight:600;font-size:.9rem;
  box-shadow:0 12px 30px rgba(37,211,102,.4);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.wa-float:hover{color:#fff;transform:translateY(-4px) scale(1.03);box-shadow:0 18px 40px rgba(37,211,102,.5)}
.wa-float svg{width:23px;height:23px}
.wa-float::after{
  content:"";position:absolute;inset:0;border-radius:999px;border:2px solid var(--wa);
  animation:pulse 2.4s ease-out infinite;pointer-events:none;
}
@keyframes pulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.35);opacity:0}}

/* Les deux boutons flottants occupent chacun un coin : empilés du même côté,
   ils recouvraient les liens du pied de page. */
.to-top{
  position:fixed;left:22px;bottom:22px;z-index:90;width:46px;height:46px;border-radius:12px;
  background:var(--blue);color:#fff;font-size:1.2rem;display:grid;place-items:center;
  box-shadow:0 10px 26px rgba(40,72,163,.34);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,background .25s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--blue-dark)}

/* ---------- Lightbox ---------- */
/* ATTENTION — double sécurité, ne pas retirer.
   1) `display:flex` ci-dessous l'emporte sur l'attribut HTML `hidden` : sans la
      règle [hidden], la visionneuse reste un calque invisible plein écran qui
      intercepte TOUS les clics de la page.
   2) `pointer-events:none` tant qu'elle n'est pas ouverte : même si le point 1
      venait à sauter, ou pendant les 300 ms de l'animation de fermeture,
      le calque laisse passer les clics. */
.lightbox[hidden]{display:none}
.lightbox:not(.open){pointer-events:none}
.lightbox.open{pointer-events:auto}
.lightbox{
  position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  background:rgba(12,16,26,.92);backdrop-filter:blur(6px);padding:5vh 4vw;
  opacity:0;transition:opacity .3s var(--ease);
}
.lightbox.open{opacity:1}
.lightbox figure{margin:0;max-width:min(1000px,100%);text-align:center}
.lightbox img{max-height:78vh;width:auto;margin-inline:auto;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lightbox figcaption{color:#fff;margin-top:1rem;font-family:var(--f-title);font-weight:600;letter-spacing:.03em}
.lb-close{position:absolute;top:18px;right:24px;font-size:2.5rem;line-height:1;color:#fff;opacity:.8}
.lb-close:hover{opacity:1}
.lb-nav{
  position:absolute;top:50%;transform:translateY(-50%);font-size:3rem;line-height:1;
  color:#fff;opacity:.65;padding:.5rem 1rem;transition:opacity .2s;
}
.lb-nav:hover{opacity:1}
.lb-prev{left:1vw}
.lb-next{right:1vw}
body.no-scroll{overflow:hidden}

/* ---------- Animations au défilement ---------- */
.reveal{
  opacity:0;transform:translateY(26px);
  transition:opacity .72s var(--ease),transform .72s var(--ease);
}
.reveal.visible{opacity:1}

/* ---------- Responsive ---------- */
/* Le rail n'a la place de s'afficher qu'à partir de 1200 px */
@media (max-width:1199px){
  .rail{display:none}
}
@media (max-width:1080px){
  .nav a{padding:.5rem .55rem;font-size:.82rem}
  .brand-txt em{display:none}
}
@media (max-width:980px){
  :root{--head-h:70px}
  .burger{display:flex}
  .hide-sm{display:none}
  .nav{
    position:fixed;top:var(--head-h);left:0;right:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(18px);
    box-shadow:0 20px 40px rgba(20,24,31,.14);border-top:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .42s var(--ease);
  }
  .nav.open{max-height:70vh;overflow-y:auto}
  .nav ul{flex-direction:column;align-items:stretch;gap:0;padding:.6rem 1.25rem 1.4rem}
  .nav li{border-bottom:1px solid var(--line)}
  .nav li:last-child{border-bottom:0}
  .nav a{padding:.95rem .2rem;font-size:.98rem}
  .nav a::after{display:none}

  .hero-grid,.about-grid,.why-grid,.contact-grid{grid-template-columns:1fr}
  .hero .lead{max-width:none}
  /* la mosaïque passe pleine largeur : on la borne pour qu'elle reste lisible */
  .about-collage{max-width:520px;margin-inline:auto;width:100%}
  /* 5 valeurs : 3 + 2 plutôt qu'une ligne orpheline */
  .values{grid-template-columns:repeat(3,1fr)}
  /* 9 réalisations : 3 × 3 tant que la place le permet */
  .gallery{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
  .hero-media{order:-1;max-width:520px;margin-inline:auto;width:100%}
  .hero-media img{aspect-ratio:16/11}
  .hero-badge{left:auto;right:12px;bottom:-14px}
  .vm-grid{grid-template-columns:1fr}
  .why-media{max-width:560px;margin-inline:auto;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:15px}
  .facts{gap:1.6rem}
  .facts strong{font-size:1.7rem}
  .about-collage{gap:9px}
  .values{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:1fr}
  .contact-form .row{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-bottom{justify-content:center;text-align:center}
  .wa-float span{display:none}
  .wa-float{padding:.85rem;border-radius:50%}

  /* Confort tactile : 16 px sur les champs empêche le zoom automatique de
     Safari iOS au focus, et les zones de tap passent à ~44 px. */
  .field input,.field select,.field textarea{font-size:16px}
  .lang-btn{min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0}
  .coord a{padding:.45rem 0}
  .f-col li a{display:inline-block;padding:.3rem 0}
  .gallery{grid-template-columns:1fr}
  .lb-nav{font-size:2.2rem;padding:.4rem .5rem}
  .shape-blue{width:150px;height:100px}
  .shape-grey{width:190px;height:135px}
}
@media (max-width:430px){
  .values{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .rule{width:76px}
  .bg-anim .blob{transform:none}
  .bg-anim .blob i{animation:none}
}

@media print{
  .site-header,.wa-float,.to-top,.marquee,.map-wrap,.filters,.lightbox{display:none!important}
  .reveal{opacity:1!important;transform:none!important}
  body{font-size:11pt}
}