:root{
  --slate:#2b3440; --slate-2:#3d4856; --zinc:#f3f4f6; --zinc-2:#e5e7eb;
  --blue:#1e5f9e; --blue-d:#14426f; --cta:#f59e0b; --cta-d:#d98206;
  --text:#1f2933; --muted:#5b6673; --white:#fff;
  --radius:12px; --shadow:0 4px 18px rgba(20,30,45,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);line-height:1.6;background:var(--white);padding-bottom:64px}
img{max-width:100%;display:block}
a{color:inherit}
.container{width:100%;max-width:1100px;margin:0 auto;padding:0 20px}
section{padding:56px 0}
h1,h2,h3{line-height:1.2;color:var(--slate)}
h2{font-size:1.7rem;margin-bottom:8px}
.lead{color:var(--muted);margin-bottom:32px;max-width:640px}
#zone .lead{max-width:900px}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin-bottom:8px}

.skip{position:absolute;left:-999px;top:8px;background:var(--cta);color:#1b1b1b;padding:10px 16px;border-radius:8px;font-weight:700;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--cta);outline-offset:2px}
.mt-20{margin-top:20px}
.eyebrow-cta{color:var(--cta)}
.coords .mail{font-size:1rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:10px;font-weight:700;font-size:1rem;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:.15s;min-height:48px}
.btn-cta{background:var(--cta);color:#1b1b1b}
.btn-cta:hover{background:var(--cta-d)}
.btn-ghost{border-color:#fff;color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d)}

/* Header */
header{position:sticky;top:0;z-index:50;background:var(--slate);color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-weight:800;font-size:1.15rem;text-decoration:none;color:#fff}
.logo span{color:var(--cta)}
nav ul{display:none;list-style:none;gap:24px}
nav a{text-decoration:none;font-weight:500;color:#e5e7eb}
nav a:hover{color:var(--cta)}
.nav .btn{padding:9px 16px;min-height:40px;font-size:.95rem}

/* Hero */
.hero{position:relative;overflow:hidden;background:#1d3557;color:#fff;padding:64px 0 56px}
/* vidéo en filigrane derrière le texte (partie basse d'un chantier de soudure bitume) */
.hero-video{position:absolute;z-index:0;inset:0;width:100%;height:100%;object-fit:cover;object-position:center bottom}
.hero::before{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(135deg,rgba(20,40,70,.9),rgba(30,95,158,.82))}
.hero>.container{position:relative;z-index:2}
@media(prefers-reduced-motion:reduce){.hero-video{display:none}}
.hero h1{color:#fff;font-size:2rem;margin-bottom:16px}
.hero h1 em{color:var(--cta);font-style:normal}
.hero p{font-size:1.08rem;max-width:620px;color:#e8eef5;margin-bottom:28px}
.hero .actions{display:flex;flex-direction:column;gap:12px;max-width:420px}
.hours{margin-top:22px;display:inline-block;background:rgba(255,255,255,.12);padding:8px 14px;border-radius:8px;font-size:.92rem}
.hero-points{list-style:none;margin-top:24px;display:grid;gap:6px;font-size:.95rem}
.hero-points li::before{content:"✓ ";color:var(--cta);font-weight:700}

/* Services */
.services{background:var(--zinc)}
.grid{display:grid;gap:20px}
.card{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);border-top:5px solid var(--blue)}
.card.alt{border-top-color:var(--cta)}
.card.minor{border-top-color:var(--slate-2)}
.card.annex{border-top-color:var(--blue-d)}
.card .icon{font-size:2rem;margin-bottom:10px}
.card h3{font-size:1.25rem;margin-bottom:10px}
.card ul{margin:12px 0 0 18px;color:var(--muted)}
.card li{margin-bottom:4px}

/* Guarantees */
.guar{display:grid;gap:18px}
.guar .item{display:flex;gap:16px;align-items:flex-start;padding:20px;border:1px solid var(--zinc-2);border-radius:var(--radius)}
.guar .badge{flex:0 0 48px;height:48px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:1.3rem}
.guar h3{font-size:1.05rem;margin-bottom:4px}
.guar p{color:var(--muted);font-size:.95rem}

/* Gallery */
.gallery{background:var(--zinc)}
/* Carrousel de réalisations */
.carousel{--w:78vw;position:relative;margin-top:8px}
@supports (width:1cqw){.carousel{--w:78cqw;container-type:inline-size}}
.car-track{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding:10px calc((100% - var(--w)) / 2) 14px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.car-track::-webkit-scrollbar{display:none}
.car-track:focus-visible{outline:3px solid var(--cta);outline-offset:-3px}
.car-slide{position:relative;flex:0 0 var(--w);max-width:90vw;scroll-snap-align:center;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--slate);transform:scale(.93);opacity:.65;transition:transform .35s ease,opacity .35s ease}
.car-slide.actif{transform:scale(1);opacity:1}
.car-open{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in}
.car-open img{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover}
.car-slide figcaption{position:absolute;left:0;right:0;bottom:0;padding:46px 16px 16px;color:#fff;font-weight:700;font-size:1.02rem;line-height:1.3;background:linear-gradient(to top,rgba(15,23,32,.88),rgba(15,23,32,0));pointer-events:none}
.car-tag{display:inline-block;margin-bottom:6px;padding:2px 10px;border-radius:99px;background:var(--cta);color:#1b1b1b;font-size:.7rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}
.car-slide figcaption .car-tag{display:block;width:max-content}
.car-btn{position:absolute;top:calc(50% - 30px);z-index:2;width:48px;height:48px;border:0;border-radius:50%;background:rgba(255,255,255,.95);color:var(--slate);font-size:2rem;line-height:1;box-shadow:0 4px 14px rgba(0,0,0,.3);cursor:pointer;display:grid;place-items:center;padding:0 0 4px}
.car-btn:hover{background:var(--cta)}
.car-btn.prev{left:8px}
.car-btn.next{right:8px}
.car-dots{display:flex;justify-content:center;gap:8px;margin-top:4px;flex-wrap:wrap}
.car-dots button{width:12px;height:12px;border-radius:50%;border:0;padding:0;background:#b9c0c8;cursor:pointer}
.car-dots button[aria-current="true"]{background:var(--cta);transform:scale(1.35)}
.lightbox{border:0;padding:0;background:transparent;max-width:min(96vw,720px);width:100%;overflow:visible;color:#fff}
.lightbox::backdrop{background:rgba(10,14,20,.88)}
.lightbox img{display:block;width:100%;height:auto;max-height:82vh;object-fit:contain;border-radius:10px;background:#000}
.lb-cap{margin-top:10px;text-align:center;font-weight:700}
.lb-close{position:absolute;top:-8px;right:-4px;z-index:3;width:44px;height:44px;border:0;border-radius:50%;background:#fff;color:var(--slate);font-size:1.8rem;line-height:1;cursor:pointer}
.lb-nav{position:absolute;top:44%;z-index:3;width:46px;height:46px;border:0;border-radius:50%;background:rgba(255,255,255,.92);color:var(--slate);font-size:2rem;line-height:1;cursor:pointer;display:grid;place-items:center;padding:0 0 4px}
.lb-prev{left:6px}
.lb-next{right:6px}
@media(min-width:720px){
  .carousel{--w:min(31vw,380px)}
  @supports (width:1cqw){.carousel{--w:min(31cqw,380px)}}
  .car-track{gap:20px}
  .car-btn{width:56px;height:56px}
  .car-btn.prev{left:3%}
  .car-btn.next{right:3%}
}
@media(prefers-reduced-motion:reduce){.car-track{scroll-behavior:auto}.car-slide{transition:none}}

/* Zone */
.towns{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;list-style:none}
.towns li{background:var(--zinc);border:1px solid var(--zinc-2);padding:6px 14px;border-radius:999px;font-size:.92rem}

/* Contact */
.contact{background:var(--slate);color:#fff}
.contact h2{color:#fff}
.contact .lead{color:#c9d2dc}
.contact-wrap{display:grid;gap:32px}
.coords{display:grid;gap:14px;align-content:start}
.coords a{color:var(--cta);font-weight:700;text-decoration:none;font-size:1.2rem}
.coords p{color:#c9d2dc}
form{background:#fff;color:var(--text);padding:24px;border-radius:var(--radius);display:grid;gap:14px}
label{font-weight:600;font-size:.9rem;display:grid;gap:5px}
input,select,textarea{font:inherit;padding:12px;border:1px solid #c7cdd4;border-radius:8px;width:100%;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--blue);border-color:var(--blue)}
textarea{min-height:110px;resize:vertical}
.rgpd{font-size:.78rem;color:var(--muted);font-weight:400}

/* Footer */
footer{background:#1a2028;color:#aab4bf;padding:36px 0;font-size:.88rem}
footer h3{color:#fff;font-size:1rem;margin-bottom:8px}
footer p{margin-bottom:6px}
footer .copy{margin-top:12px}

/* Sticky mobile call bar */
.callbar{position:fixed;bottom:0;left:0;right:0;z-index:60;display:flex;background:var(--cta);box-shadow:0 -3px 12px rgba(0,0,0,.25)}
.callbar a{flex:1;text-align:center;padding:16px;font-weight:800;text-decoration:none;color:#1b1b1b;font-size:1.05rem}
.callbar a+a{background:var(--slate);color:#fff}

@media(min-width:720px){
  body{padding-bottom:0}
  .callbar{display:none}
  nav ul{display:flex}
  .hero h1{font-size:2.8rem}
  .hero .actions{flex-direction:row;max-width:none}
  .grid.two{grid-template-columns:1fr 1fr}
  .grid.three{grid-template-columns:repeat(3,1fr)}
  .guar{grid-template-columns:repeat(3,1fr)}
  .contact-wrap{grid-template-columns:1fr 1.2fr}
  h2{font-size:2.1rem}
}

/* Pied de page : liens */
footer a{color:#fff}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:10px}

/* Page mentions légales */
.legal{padding:48px 0}
.legal h1{font-size:2rem;margin-bottom:24px}
.legal h2{font-size:1.25rem;margin:28px 0 8px}
.legal p,.legal li{color:var(--text);margin-bottom:8px;max-width:760px}
.legal ul{margin:0 0 8px 20px}
.legal .back{display:inline-block;margin-bottom:20px;color:var(--blue);font-weight:600}

/* Mobile : ajustements */
html{-webkit-text-size-adjust:100%}
body{overflow-x:hidden}
.callbar{padding-bottom:env(safe-area-inset-bottom)}
body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
@media(max-width:380px){
  .container{padding:0 16px}
  section{padding:44px 0}
  .logo{font-size:1rem}
  .nav .btn{padding:8px 12px}
  .hero{padding:48px 0 40px}
  .hero h1{font-size:1.65rem}
  .btn{padding:12px 16px}
  .card{padding:20px}
  form{padding:18px}
}
@media(min-width:720px){
  body{padding-bottom:0}
}
.callbar a+a{border-left:1px solid rgba(0,0,0,.15)}
.callbar a{padding:16px 6px;font-size:1rem}
.callbar a{white-space:nowrap;font-size:.95rem;display:flex;align-items:center;justify-content:center;gap:5px}

/* Logo (fond blanc, posé sur l'en-tête sombre) */
.logo{display:flex;align-items:center;background:#fff;border-radius:8px;padding:2px 10px}
.logo img{height:50px;width:auto}
@media(max-width:380px){.logo img{height:38px}}

/* Badge d'expérience (hero) */
.hero .exp{display:inline-block;margin-bottom:14px;padding:6px 16px;border-radius:14px;background:var(--cta);color:#1b1b1b;font-size:.95rem;font-weight:600;line-height:1.3}
.hero .exp strong{font-size:1.2rem;font-weight:800;white-space:nowrap}

/* Pied de page compact */
footer{padding:18px 0;font-size:.82rem}
footer p{margin:0}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 24px}
.foot-links{margin-top:0;gap:4px 18px}
@media(max-width:600px){.foot{flex-direction:column;align-items:flex-start}}

/* Groupe de prestations (titre au-dessus de plusieurs cartes) */
.groupe{font-size:1.15rem;margin:30px 0 14px;color:var(--blue)}
.lead + .groupe{margin-top:8px}

/* Tampon « 25 ans d'expérience » : posé en animation à côté de la garantie */
.tampon{flex:0 0 76px;width:76px;height:76px;transform:rotate(-12deg);pointer-events:none}
.tampon.avant{opacity:0;transform:rotate(-30deg) scale(2.6)}
.tampon.pose{animation:tamponne 1.7s cubic-bezier(.3,.55,.3,1) .2s both}
@keyframes tamponne{
  0%{opacity:0;transform:rotate(-35deg) scale(3.2)}
  50%{opacity:1;transform:rotate(-12deg) scale(.86)}
  64%{transform:rotate(-12deg) scale(1.1)}
  80%{transform:rotate(-12deg) scale(.96)}
  100%{opacity:1;transform:rotate(-12deg) scale(1)}
}
@media(prefers-reduced-motion:reduce){.tampon.pose{animation:none}.tampon.avant{opacity:1;transform:rotate(-12deg)}}
.card .note{margin:10px 0 0;font-size:.9rem;color:var(--muted)}

/* Parrainage */
.parrainage{padding:36px 0;background:#fff8e8;border-top:1px solid #f1e2bd;border-bottom:1px solid #f1e2bd}
.parrain-box{display:flex;align-items:center;gap:18px}
.parrain-icon{flex:0 0 auto;font-size:2.4rem;line-height:1}
.parrainage h2{font-size:1.25rem;margin-bottom:4px}
.parrainage p{color:var(--slate);font-size:1.05rem;line-height:1.55}

/* ===== Animations du site (sobres, désactivées si l'utilisateur réduit les animations) ===== */
@keyframes monte{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes anneau{0%{box-shadow:0 0 0 0 rgba(245,158,11,.55)}70%{box-shadow:0 0 0 16px rgba(245,158,11,0)}100%{box-shadow:0 0 0 0 rgba(245,158,11,0)}}
.hero .exp,.hero h1,.hero .actions,.hero .hours,.hero-points li{animation:monte .85s cubic-bezier(.2,.7,.2,1) both}
.hero .exp{animation-delay:.05s}
.hero h1{animation-delay:.18s}
.hero .actions{animation-delay:.34s}
.hero .hours{animation-delay:.5s}
.hero .hours + .hours{animation-delay:.58s}
.hero-points li:nth-child(1){animation-delay:.72s}
.hero-points li:nth-child(2){animation-delay:.82s}
.hero-points li:nth-child(3){animation-delay:.92s}
.hero .btn-cta{animation:monte .85s cubic-bezier(.2,.7,.2,1) .34s both,anneau 2.8s ease-out 2.2s infinite}
.btn{transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.22)}
.card{transition:transform .28s ease,box-shadow .28s ease}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 32px rgba(20,30,45,.18)}
.guar .item{transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease}
.guar .item:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(20,30,45,.12);border-color:var(--cta)}
.towns li{transition:transform .2s ease,background .2s ease}
.towns li:hover{transform:translateY(-2px);background:#fff3d6}
/* apparition au défilement : visible par défaut, masquée seulement si le script est actif */
.js .reveal{opacity:0;translate:0 30px;transition:opacity .8s ease,translate .8s cubic-bezier(.2,.7,.2,1),transform .28s ease,box-shadow .28s ease,border-color .28s ease,background .2s ease;transition-delay:var(--d,0s),var(--d,0s),0s,0s,0s,0s}
.js .reveal.in{opacity:1;translate:none}
@media(prefers-reduced-motion:reduce){
  .hero .exp,.hero h1,.hero .actions,.hero .hours,.hero-points li,.hero .btn-cta{animation:none}
  .js .reveal{opacity:1;translate:none;transition:none}
  .card:hover,.btn:hover,.guar .item:hover,.towns li:hover{transform:none}
}

/* Carte « Étanchéité bitumineuse » : photo en filigrane */
.card.filigrane{position:relative;overflow:hidden}
.card.filigrane::before{content:"";position:absolute;inset:0;background:var(--filigrane) center/cover no-repeat;opacity:.24;pointer-events:none}
.card.filigrane-bitume{--filigrane:url("filigrane-bitume.webp")}
.card.filigrane-chalet{--filigrane:url("filigrane-chalet.webp")}
.card.filigrane-pieds{--filigrane:url("filigrane-pieds.webp")}
.card.filigrane-pieds::before{background-position:center 62%}
.card.filigrane-entretien{--filigrane:url("filigrane-entretien.webp")}
.card.filigrane>*{position:relative}