/* ============================================================
   Construction Montéa — styles.css
   Palette : marine profond / blanc / gris pâle / orange accent
   ============================================================ */

:root{
  --navy:#1E2A47;
  --navy-deep:#141D33;
  --white:#FFFFFF;
  --grey-bg:#F3F5F8;
  --grey-line:#DDE3EC;
  --grey-text:#5A6478;
  --orange:#F0932B;
  --orange-dark:#D97F1B;
  --font-display:'Barlow Condensed', sans-serif;
  --font-body:'Inter', sans-serif;
  --radius:10px;
  --shadow:0 10px 30px rgba(20,29,51,.10);
  --header-h:78px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{
  font-family:var(--font-body);
  color:var(--navy);
  background:var(--white);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit}
.container{max-width:1140px;margin:0 auto;padding:0 24px}

h1,h2,h3{font-family:var(--font-display);line-height:1.08;text-transform:uppercase;letter-spacing:.01em}
h1{font-size:clamp(2.4rem,5.6vw,4.2rem);font-weight:700}
h2{font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:700}
h3{font-size:1.45rem;font-weight:600}

.eyebrow{
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:.16em;
  font-weight:600;
  font-size:.95rem;
  color:var(--orange);
  margin-bottom:.5rem;
}
.section-head{max-width:640px;margin-bottom:2.6rem}
.section-head-light h2{color:var(--white)}

/* ---------- Boutons ---------- */
.btn{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:.06em;
  font-size:1.05rem;
  padding:.8rem 1.7rem;
  border-radius:var(--radius);
  text-decoration:none;
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .18s ease, background .18s ease, border-color .18s ease;
}
.btn:active{transform:scale(.97)}
.btn-orange{background:var(--orange);color:var(--navy-deep)}
.btn-orange:hover{background:var(--orange-dark)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:var(--white)}
.btn-ghost:hover{border-color:var(--white);background:rgba(255,255,255,.08)}
.btn-full{width:100%;border:none;font-size:1.1rem}

.link-arrow{
  display:inline-block;
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--navy);
  text-decoration:none;
  border-bottom:2px solid var(--orange);
  padding-bottom:2px;
  margin-top:1.1rem;
  transition:color .15s ease;
}
.link-arrow:hover{color:var(--orange-dark)}
.link-arrow::after{content:" →"}

/* ---------- Header ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--grey-line);
  height:var(--header-h);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.header-logo img{height:52px;width:auto}
.nav{display:flex;align-items:center;gap:1.8rem}
.nav a:not(.btn){
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:.08em;
  font-weight:600;
  font-size:1.02rem;
  text-decoration:none;
  color:var(--navy);
  position:relative;
}
.nav a:not(.btn)::after{
  content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;
  background:var(--orange);transition:width .2s ease;
}
.nav a:not(.btn):hover::after{width:100%}
.nav-cta{padding:.55rem 1.2rem;font-size:.98rem}

.burger{display:none;background:none;border:none;width:42px;height:42px;cursor:pointer;flex-direction:column;justify-content:center;gap:6px;align-items:center}
.burger span{display:block;width:26px;height:2.5px;background:var(--navy);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.burger.open span:nth-child(1){transform:translateY(8.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-8.5px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;align-items:center;
  padding:calc(var(--header-h) + 60px) 0 90px;
  color:var(--white);
  /* motif toiture : coupe en angle au bas */
  clip-path:polygon(0 0,100% 0,100% calc(100% - 4vw),0 100%);
}
.hero-bg{position:absolute;inset:0;z-index:-1}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(20,29,51,.92) 0%, rgba(20,29,51,.72) 48%, rgba(20,29,51,.38) 100%);
}
.hero-content{position:relative;max-width:1140px}
.hero-eyebrow{
  font-family:var(--font-display);
  text-transform:uppercase;letter-spacing:.18em;font-weight:600;
  color:var(--orange);margin-bottom:1rem;font-size:1rem;
}
.hero h1{max-width:14ch;margin-bottom:1.2rem}
.hero-sub{max-width:52ch;font-size:1.1rem;color:rgba(255,255,255,.88);margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-bottom:2.2rem}
.hero-creds{
  display:flex;align-items:center;gap:.9rem;flex-wrap:wrap;
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.1em;
  font-weight:500;font-size:.95rem;color:rgba(255,255,255,.75);
}
.hero-creds .dot{width:5px;height:5px;border-radius:50%;background:var(--orange)}

/* ---------- Services ---------- */
.services{padding:5.5rem 0 5rem;background:var(--white)}
.services-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
.service-card{
  background:var(--grey-bg);
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--grey-line);
  display:flex;flex-direction:column;
  transition:transform .25s ease, box-shadow .25s ease;
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.service-img{aspect-ratio:16/9;overflow:hidden}
.service-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.service-card:hover .service-img img{transform:scale(1.04)}
.service-body{padding:1.8rem 1.8rem 2rem}
.service-body h3{margin-bottom:1rem;font-size:1.7rem}
.service-list{list-style:none}
.service-list li{
  padding-left:1.3rem;position:relative;margin-bottom:.55rem;
  color:var(--grey-text);font-size:.98rem;
}
.service-list li::before{
  content:"";position:absolute;left:0;top:.55em;
  width:.55rem;height:.55rem;
  background:var(--orange);
  clip-path:polygon(0 100%,50% 0,100% 100%); /* petit pignon de toit */
}

/* ---------- Fournisseurs ---------- */
.suppliers{margin-top:1.3rem;padding-top:1.1rem;border-top:1px solid var(--grey-line)}
.suppliers-label{
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.1em;
  font-weight:600;font-size:.85rem;color:var(--grey-text);margin-bottom:.6rem;
}
.suppliers-logos{display:flex;gap:.8rem;align-items:center;flex-wrap:wrap}
.suppliers-logos img{
  height:44px;width:auto;background:var(--white);
  border:1px solid var(--grey-line);border-radius:8px;padding:.45rem .8rem;
  filter:grayscale(35%);opacity:.9;transition:filter .2s ease,opacity .2s ease;
}
.suppliers-logos img:hover{filter:grayscale(0);opacity:1}

/* ---------- Liens sociaux ---------- */
.social-links{display:flex;gap:.7rem;margin-top:1.4rem}
.social-links a{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--grey-line);color:var(--grey-text);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.social-links a:hover{color:var(--orange-dark);border-color:var(--orange);transform:translateY(-2px)}
.social-footer a{border-color:rgba(255,255,255,.25);color:rgba(255,255,255,.7)}
.social-footer a:hover{color:var(--orange);border-color:var(--orange)}

/* ---------- Sélecteur de langue ---------- */
.lang-switch{
  font-size:.92rem !important;
  border:1px solid var(--grey-line);
  border-radius:6px;
  padding:.25rem .55rem;
  color:var(--grey-text) !important;
}
.lang-switch::after{display:none !important}
.lang-switch:hover{border-color:var(--orange);color:var(--navy) !important}

/* ---------- Réalisations ---------- */
.realisations{padding:5rem 0;background:var(--grey-bg)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.g-item{
  position:relative;border-radius:var(--radius);overflow:hidden;
  aspect-ratio:4/3;background:var(--navy-deep);
}
.g-wide{grid-column:span 2}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.g-item:hover img{transform:scale(1.05)}
.g-item figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:2.2rem 1.1rem .85rem;
  background:linear-gradient(to top, rgba(20,29,51,.85), transparent);
  color:var(--white);
  font-family:var(--font-display);
  text-transform:uppercase;letter-spacing:.08em;font-weight:500;font-size:.95rem;
  opacity:0;transform:translateY(8px);
  transition:opacity .3s ease, transform .3s ease;
}
.g-item:hover figcaption{opacity:1;transform:translateY(0)}

/* ---------- Pourquoi ---------- */
.why{
  padding:5.5rem 0;
  background:var(--navy-deep);
  color:var(--white);
  clip-path:polygon(0 3vw,100% 0,100% 100%,0 100%);
  margin-top:-3vw;
}
.why .eyebrow{color:var(--orange)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem}
.why-item{
  border-top:3px solid var(--orange);
  padding-top:1.1rem;
}
.why-item h3{font-size:1.25rem;margin-bottom:.5rem}
.why-item p{color:rgba(255,255,255,.72);font-size:.95rem}
.why-badges{
  margin-top:3.2rem;display:flex;gap:1.4rem;align-items:center;flex-wrap:wrap;
}
.why-badges img{
  height:64px;width:auto;background:var(--white);
  border-radius:8px;padding:.6rem .9rem;
}

/* ---------- Contact ---------- */
.contact{padding:5.5rem 0;background:var(--white)}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:3.5rem;align-items:start}
.contact-lead{color:var(--grey-text);margin:.8rem 0 1.8rem}
.contact-list{list-style:none}
.contact-list li{
  display:flex;gap:1rem;align-items:baseline;
  padding:.75rem 0;border-bottom:1px solid var(--grey-line);
}
.contact-label{
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.08em;
  font-weight:600;min-width:88px;color:var(--grey-text);font-size:.95rem;
}
.contact-list a{color:var(--navy);text-decoration:none;font-weight:500}
.contact-list a:hover{color:var(--orange-dark)}

.contact-form-wrap{
  background:var(--grey-bg);
  border:1px solid var(--grey-line);
  border-radius:var(--radius);
  padding:2rem;
}
.contact-form .hp{position:absolute;left:-9999px;opacity:0;height:0}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-field{margin-bottom:1rem;display:flex;flex-direction:column}
.form-field label{
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.07em;
  font-weight:600;font-size:.92rem;margin-bottom:.35rem;
}
.form-field input,.form-field select,.form-field textarea{
  font-family:var(--font-body);font-size:1rem;color:var(--navy);
  padding:.7rem .85rem;border:1px solid var(--grey-line);border-radius:8px;
  background:var(--white);width:100%;
}
.form-field textarea{resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:2px solid var(--orange);outline-offset:1px;border-color:var(--orange);
}
.form-success{
  background:#EAF7EE;border:1px solid #BEE3C8;border-radius:8px;
  padding:1.2rem 1.4rem;margin-bottom:1.2rem;color:#1E5631;
}
.form-success h3{color:#1E5631;margin-bottom:.2rem}
.form-error{
  background:#FCEDEA;border:1px solid #F0C4BB;border-radius:8px;
  padding:1rem 1.2rem;margin-bottom:1.2rem;color:#8A2E1D;font-size:.95rem;
}
.form-error a{color:#8A2E1D}

/* ---------- Footer ---------- */
.footer{background:var(--navy-deep);color:rgba(255,255,255,.82);padding:3.2rem 0 0}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:2rem;padding-bottom:2.2rem}
.footer-brand{
  font-family:var(--font-display);text-transform:uppercase;font-weight:700;
  font-size:1.6rem;color:var(--white);line-height:1.1;
}
.footer-brand span{color:var(--orange)}
.footer-tag{font-family:var(--font-display);text-transform:uppercase;letter-spacing:.14em;font-size:.9rem;color:rgba(255,255,255,.55);margin-top:.3rem}
.footer-col p{margin-bottom:.4rem;font-size:.95rem}
.footer a{color:rgba(255,255,255,.82);text-decoration:none}
.footer a:hover{color:var(--orange)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:1.1rem 24px;font-size:.85rem;color:rgba(255,255,255,.5);
}

/* ---------- Barre mobile ---------- */
.mobile-bar{
  display:none;
  position:fixed;bottom:0;left:0;right:0;z-index:110;
  box-shadow:0 -4px 16px rgba(20,29,51,.18);
}
.mobile-bar a{
  flex:1;text-align:center;padding:1rem 0;
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.08em;
  font-weight:700;font-size:1.1rem;text-decoration:none;
}
.mb-call{background:var(--navy-deep);color:var(--white)}
.mb-quote{background:var(--orange);color:var(--navy-deep)}

/* ---------- Révélations au défilement ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease, transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .g-item figcaption{opacity:1;transform:none}
}

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .services-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:2.4rem}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .g-wide{grid-column:span 2}
}
@media (max-width: 760px){
  :root{--header-h:66px}
  .header-logo img{height:44px}
  .burger{display:flex}
  .nav{
    position:fixed;top:var(--header-h);left:0;right:0;
    background:var(--white);border-bottom:1px solid var(--grey-line);
    flex-direction:column;align-items:flex-start;
    padding:1.2rem 24px 1.6rem;gap:1.1rem;
    transform:translateY(-130%);transition:transform .25s ease;
    box-shadow:0 12px 24px rgba(20,29,51,.10);
  }
  .nav.open{transform:translateY(0)}
  .hero{min-height:auto;clip-path:polygon(0 0,100% 0,100% calc(100% - 7vw),0 100%);padding-bottom:110px}
  .why{clip-path:polygon(0 5vw,100% 0,100% 100%,0 100%);margin-top:-5vw}
  .gallery{grid-template-columns:1fr}
  .g-wide{grid-column:span 1}
  .why-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- Page confidentialité ---------- */
.legal{padding:calc(var(--header-h) + 60px) 0 4rem;max-width:760px}
.legal h1{font-size:clamp(2rem,4vw,2.8rem);margin-bottom:1.4rem}
.legal h2{font-size:1.4rem;margin:2rem 0 .6rem}
.legal p,.legal li{color:var(--grey-text);font-size:.98rem;margin-bottom:.7rem}
.legal ul{padding-left:1.2rem}