/* ==========================================================
   KACIANS — Feuille de style (charte marine + cuivre)
   Marine #152F3E · Cuivre #BE854F · Gris-bleu #71818C
   ========================================================== */

:root{
  --marine:#152F3E;
  --marine-nuit:#0d2029;
  --marine-2:#22475d;
  --cuivre:#BE854F;
  --cuivre-fonce:#a06d3a;
  --cuivre-clair:#d3a877;
  --gris-bleu:#71818C;
  --fond:#f5f4f0;
  --carte:#ffffff;
  --encre:#1b2a33;
  --muted:#5f6d74;
  --ligne:#e4e3dc;
  --radius:16px;
  --radius-s:10px;
  --font-display:'Archivo',system-ui,-apple-system,sans-serif;
  --font-body:'Figtree',system-ui,-apple-system,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;
  --largeur:1120px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-body);color:var(--encre);background:var(--fond);line-height:1.6;font-size:1.0625rem;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--marine);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--cuivre);outline-offset:3px;border-radius:4px}

h1,h2,h3{font-family:var(--font-display);line-height:1.12;color:var(--marine);margin:0 0 .6em;letter-spacing:-.015em}
h1{font-size:clamp(2.1rem,4.6vw,3.3rem);font-weight:800}
h2{font-size:clamp(1.65rem,3.2vw,2.25rem);font-weight:800}
h3{font-size:1.22rem;font-weight:700}
p{margin:0 0 1em}
.sous-titre{font-size:clamp(1.05rem,1.6vw,1.2rem);color:var(--muted);max-width:56ch}

.conteneur{max-width:var(--largeur);margin-inline:auto;padding-inline:24px}
.section{padding-block:clamp(56px,8vw,96px)}
.section-tete{max-width:62ch;margin-bottom:clamp(28px,4vw,44px)}

.code{display:inline-block;font-family:var(--font-mono);font-size:.8rem;font-weight:500;letter-spacing:.08em;color:var(--cuivre-clair);background:var(--marine-nuit);padding:3px 10px;border-radius:7px}
.surtitre{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cuivre-fonce);margin-bottom:14px}
.surtitre::before{content:"";width:26px;height:2px;background:var(--cuivre)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:1rem;background:var(--cuivre);color:#fff;padding:13px 26px;border-radius:12px;border:0;cursor:pointer;transition:background .18s ease,transform .18s ease}
.btn:hover{background:var(--cuivre-fonce);text-decoration:none;transform:translateY(-1px)}
.btn-ligne{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:1rem;color:var(--marine);background:transparent;padding:12px 24px;border-radius:12px;border:2px solid var(--marine);transition:background .18s ease}
.btn-ligne:hover{background:#eef0ee;text-decoration:none}

.topbar{background:var(--marine-nuit);color:#c3d0d6;font-family:var(--font-mono);font-size:.8rem}
.topbar .conteneur{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:8px}
.topbar a{color:var(--cuivre-clair)}
.topbar-zone{letter-spacing:.06em}

.entete{position:sticky;top:0;z-index:50;background:rgba(245,244,240,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--ligne)}
.entete .conteneur{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:12px}
.logo{display:inline-flex;align-items:center}
.logo:hover{text-decoration:none}
.logo-img{height:62px;width:auto}
.nav{display:flex;align-items:center;gap:26px}
.nav a{font-weight:600;font-size:.98rem;color:var(--encre);padding-block:6px;position:relative}
.nav a:hover{text-decoration:none;color:var(--cuivre-fonce)}
.nav a[aria-current="page"]{color:var(--cuivre-fonce)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;background:var(--cuivre);border-radius:2px}
.entete-actions{display:flex;align-items:center;gap:18px}
.entete-tel{font-family:var(--font-mono);font-weight:500;font-size:.95rem;color:var(--marine);white-space:nowrap}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2.5px;background:var(--marine);margin:5px 0;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

.hero{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,5vw,60px);align-items:center;padding-block:clamp(44px,6vw,80px)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:26px}
.hero-tel{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:1.05rem;font-weight:500;color:var(--marine)}
.hero-note{margin-top:14px;font-size:.92rem;color:var(--muted)}
.hero-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;box-shadow:0 20px 40px rgba(13,32,41,.16)}

.reassurance{background:var(--carte);border-block:1px solid var(--ligne)}
.reassurance .conteneur{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding-block:30px}
.reassurance-item{display:flex;gap:14px;align-items:flex-start}
.reassurance-item svg{flex:0 0 auto;color:var(--cuivre-fonce);margin-top:2px}
.reassurance-item strong{display:block;font-family:var(--font-display);font-size:.98rem;color:var(--marine)}
.reassurance-item span{font-size:.88rem;color:var(--muted)}

.grille-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.carte{background:var(--carte);border:1px solid var(--ligne);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:12px;transition:transform .18s ease,box-shadow .18s ease}
.carte:hover{transform:translateY(-4px);box-shadow:0 14px 28px rgba(13,32,41,.10)}
.carte-icone{width:52px;height:52px;border-radius:14px;background:#eef1ef;display:grid;place-items:center;color:var(--marine)}
.carte p{color:var(--muted);font-size:.97rem;margin:0}
.carte .code{align-self:flex-start}
.carte-lien{font-weight:700;margin-top:auto;color:var(--cuivre-fonce)}

.showcase-img{width:100%;border-radius:var(--radius);object-fit:cover;aspect-ratio:16/7;box-shadow:0 16px 32px rgba(13,32,41,.12)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panneau-photo{border:1px solid var(--ligne);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;background:var(--carte)}
.panneau-img{width:100%;aspect-ratio:3/2;object-fit:cover}
.panneau-photo .corps{padding:clamp(22px,3vw,32px);display:flex;flex-direction:column;gap:10px;flex:1}
.panneau-chantier .corps{background:var(--marine);color:#dbe3e7}
.panneau-chantier h3{color:#fff}
.panneau-chantier p{color:#c3d0d6}
.panneau-photo .code{align-self:flex-start}
.panneau-chantier .code{background:rgba(0,0,0,.28)}
.panneau-photo ul{margin:4px 0 0;padding-left:20px}
.panneau-photo li{margin-bottom:6px}

.atouts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.atout{border-left:3px solid var(--cuivre);padding-left:20px}
.atout h3{margin-bottom:.35em}
.atout p{color:var(--muted);font-size:.97rem;margin:0}

.band-cta{background:var(--marine)}
.band-cta .conteneur{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding-block:clamp(40px,6vw,64px)}
.band-cta h2{color:#fff;margin:0 0 .3em}
.band-cta p{color:#b6c3ca;margin:0;max-width:44ch}
.band-cta-contact{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.band-cta-tel{font-family:var(--font-mono);font-size:clamp(1.3rem,2.6vw,1.7rem);color:var(--cuivre-clair);letter-spacing:.04em}
.band-cta-tel:hover{color:var(--cuivre-clair)}
.band-cta-mail{color:#c3d0d6;font-family:var(--font-mono);font-size:.95rem}

.etapes{display:grid;gap:20px}
.etape{display:grid;grid-template-columns:72px 1fr;gap:22px;align-items:flex-start;background:var(--carte);border:1px solid var(--ligne);border-radius:var(--radius);padding:26px}
.touche{width:60px;height:60px;border-radius:14px;background:var(--marine);color:var(--cuivre-clair);font-family:var(--font-mono);font-size:1.5rem;font-weight:500;display:grid;place-items:center}
.etape h3{margin-bottom:.3em}
.etape p{color:var(--muted);margin:0}

.produit{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,44px);align-items:center;margin-bottom:clamp(36px,5vw,64px)}
.produit:last-child{margin-bottom:0}
.produit-img img{width:100%;border-radius:var(--radius);object-fit:cover;aspect-ratio:4/3;box-shadow:0 14px 30px rgba(13,32,41,.12)}
.produit.inverse .produit-img{order:2}
.produit h3{font-size:1.5rem}
.produit p{color:var(--muted);margin:0}

.valeurs{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.engagements{background:var(--carte);border:1px solid var(--ligne);border-radius:var(--radius);padding:clamp(26px,3.5vw,40px)}
.engagements ul{margin:10px 0 0;padding-left:0;list-style:none}
.engagements li{padding:10px 0 10px 32px;position:relative;border-bottom:1px solid var(--ligne)}
.engagements li:last-child{border-bottom:0}
.engagements li::before{content:"";position:absolute;left:4px;top:16px;width:12px;height:12px;border-radius:4px;background:var(--cuivre)}

.contact-grille{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:40px}
.contact-carte{background:var(--marine);color:#dbe3e7;border-radius:var(--radius);padding:clamp(26px,3.5vw,38px);display:flex;flex-direction:column;gap:8px}
.contact-carte .surtitre{color:var(--cuivre-clair)}
.contact-carte a{font-family:var(--font-mono);color:var(--cuivre-clair);font-size:clamp(1.15rem,2.2vw,1.5rem);letter-spacing:.03em;word-break:break-all}
.contact-carte p{color:#b6c3ca;font-size:.93rem;margin:0}

.formulaire{background:var(--carte);border:1px solid var(--ligne);border-radius:var(--radius);padding:clamp(26px,4vw,44px)}
.form-grille{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.champ{display:flex;flex-direction:column;gap:6px}
.champ-large{grid-column:1 / -1}
.champ label{font-weight:600;font-size:.95rem}
.champ input,.champ select,.champ textarea{font:inherit;color:var(--encre);border:1.5px solid var(--ligne);border-radius:var(--radius-s);padding:12px 14px;background:var(--fond)}
.champ input:focus,.champ select:focus,.champ textarea:focus{outline:none;border-color:var(--marine);background:#fff}
.champ textarea{min-height:140px;resize:vertical}
.form-pied{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:6px}
.form-note{font-size:.88rem;color:var(--muted);margin:0}
.alerte{display:none;background:#fdecec;border:1px solid #e8b4b4;color:#8a2b2b;border-radius:var(--radius-s);padding:12px 16px;margin-bottom:20px;font-size:.95rem}
.alerte.visible{display:block}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

.pied{background:var(--marine-nuit);color:#b6c3ca}
.pied a{color:#e8edf0}
.pied .conteneur{padding-block:clamp(40px,6vw,64px)}
.pied-grille{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px}
.logo-img-pied{height:92px;width:auto;margin-bottom:8px}
.pied h4{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--cuivre-clair);margin:0 0 14px}
.pied ul{list-style:none;margin:0;padding:0}
.pied li{margin-bottom:9px;font-size:.95rem}
.pied p{font-size:.95rem}
.pied-bas{border-top:1px solid rgba(255,255,255,.12);padding-block:18px;font-size:.85rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
.pied-bas a{color:#b6c3ca}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.vu{opacity:1;transform:none}

@media (max-width:960px){
  .hero{grid-template-columns:1fr}
  .hero-photo{order:-1}
  .reassurance .conteneur{grid-template-columns:1fr 1fr;gap:20px}
  .grille-3,.atouts,.valeurs{grid-template-columns:1fr 1fr}
  .split,.contact-grille{grid-template-columns:1fr}
  .produit{grid-template-columns:1fr;gap:20px}
  .produit.inverse .produit-img{order:0}
  .pied-grille{grid-template-columns:1fr 1fr}
  .entete-tel{display:none}
}
@media (max-width:920px){
  .burger{display:block}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;background:var(--carte);border-bottom:1px solid var(--ligne);padding:10px 24px 18px}
  .nav.ouvert{display:flex}
  .nav a{padding-block:12px;width:100%;border-bottom:1px solid var(--ligne)}
  .nav a:last-child{border-bottom:0}
  .nav a[aria-current="page"]::after{display:none}
}
@media (max-width:640px){
  body{font-size:1rem}
  .reassurance .conteneur{grid-template-columns:1fr}
  .grille-3,.atouts,.valeurs,.form-grille{grid-template-columns:1fr}
  .pied-grille{grid-template-columns:1fr}
  .topbar-zone{display:none}
  .etape{grid-template-columns:1fr;gap:14px}
  .btn,.btn-ligne{width:100%;justify-content:center}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-tel{justify-content:center}
  .logo-img{height:48px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.carte:hover{transform:none}
}