/* ===== Reset & Variables ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --gold:#c9a84c;
  --gold-2:#e8c96a;
  --dark:#0d0d0d;
  --dark-2:#161616;
  --dark-3:#1f1f1f;
  --text:#f0ece3;
  --muted:#8a8278;
  --line:#2a2a2a;
}
html{font-size:16px;font-family:'Montserrat',sans-serif}
body{background:var(--dark);color:var(--text);line-height:1.6}
a{color:inherit;text-decoration:none}

/* ===== Container ===== */
.container{width:90%;max-width:1200px;margin:0 auto}

/* ===== Header ===== */
.site-header{
  background:rgba(13,13,13,.96);border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.hdr{display:flex;align-items:center;justify-content:space-between;padding:32px 0;position:relative}
.brand{display:flex;flex-direction:column;line-height:1;text-decoration:none}
.brand-name{font-size:2.4rem;font-weight:700;color:var(--gold);letter-spacing:3px;text-transform:uppercase}
.brand-sub{font-size:.8rem;font-weight:400;letter-spacing:5px;color:var(--muted);text-transform:uppercase;margin-top:5px}
.nav{display:flex;gap:28px;flex-wrap:wrap}
.nav a{color:var(--muted);font-size:1.1rem;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;transition:color .2s}
.nav a:hover,.nav a[aria-current="page"]{color:var(--gold)}

/* ===== Hero ===== */
.hero{
  display:grid;grid-template-columns:1fr 1fr;
  min-height:100vh;background:var(--dark);
}
.hero-photo{overflow:hidden;background:var(--dark-2)}
.hero-photo img{width:100%;height:100%;object-fit:contain;object-position:center top;display:block}
.hero-text{
  display:flex;flex-direction:column;justify-content:center;
  padding:4rem 5%;background:var(--dark);
}
.hero-logo{width:200px;margin-bottom:2rem;filter:drop-shadow(0 0 20px rgba(201,168,76,.3))}
.hero h1{
  font-size:clamp(1.4rem,3vw,2.5rem);font-weight:300;
  letter-spacing:6px;text-transform:uppercase;margin-bottom:1rem;color:#fff;
}
.hero h1 em{display:block;font-weight:800;font-style:normal;color:var(--gold);letter-spacing:4px}
.hero .lead{
  font-size:.75rem;letter-spacing:4px;text-transform:uppercase;
  color:rgba(255,255,255,.5);margin-bottom:2.5rem;
}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
@media(max-width:768px){
  .hero{grid-template-columns:1fr}
  .hero-photo{max-height:60vh}
  .hero-photo img{object-fit:contain;height:100%}
  .hero-text{padding:3rem 5%}
  .hero-logo{width:150px}
}

/* ===== Buttons ===== */
.btn{
  display:inline-block;padding:13px 30px;border:1px solid var(--gold);
  color:var(--gold);font-size:.7rem;font-weight:700;letter-spacing:2.5px;
  text-transform:uppercase;transition:all .25s;
}
.btn:hover,.btn.solid{background:var(--gold);color:var(--dark)}
.btn.solid:hover{background:transparent;color:var(--gold)}
.btn.ghost{border-color:rgba(255,255,255,.5);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.1);color:#fff}

/* ===== Sections ===== */
section{padding:70px 0}
.section-title{margin-bottom:3rem}
.section-title h1,.section-title h2{
  font-size:clamp(1.2rem,2.5vw,2rem);font-weight:300;
  letter-spacing:5px;text-transform:uppercase;margin-bottom:.5rem;
}
.section-title::after{content:"";display:block;width:50px;height:1px;background:var(--gold);margin-top:1rem}
.section-title p{color:var(--muted);font-size:.85rem;letter-spacing:1px;margin-top:1rem}

/* ===== Pilliers (vendre/acheter/rénover/créer) ===== */
.pilliers{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:2rem;background:var(--line)}
.pillier{background:var(--dark-2);padding:2.5rem 1.5rem;text-align:center}
.pillier-num{font-size:2.5rem;font-weight:800;color:var(--line);line-height:1;margin-bottom:.5rem}
.pillier h3{color:var(--gold);letter-spacing:3px;text-transform:uppercase;font-size:.8rem;font-weight:700}
.pillier p{color:var(--muted);font-size:.8rem;margin-top:.5rem}

/* ===== Grid & Cards ===== */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1px;background:var(--line)}
.card{background:var(--dark-2);padding:2rem}
.card h2{font-size:.95rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--gold);margin-bottom:1rem}
.card h3{font-size:.85rem;font-weight:600;letter-spacing:1px;color:var(--gold);margin-bottom:.5rem}
.card ul{padding-left:1.2rem;color:var(--muted);font-size:.85rem;line-height:2}
.card p{color:var(--muted);font-size:.85rem;line-height:1.8}

/* ===== Split (photo + texte) ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch}
.split img{width:100%;display:block;object-fit:contain;background:var(--dark-2)}
.split .split-text{padding:4rem 2rem 4rem 3rem;background:var(--dark-2);display:flex;flex-direction:column;justify-content:center;align-items:flex-start;text-align:left}
.text-block{display:table}
.text-block p{width:100%;white-space:normal}
.split .split-text h2{font-size:clamp(1.4rem,2.5vw,2rem);font-weight:300;letter-spacing:4px;text-transform:uppercase;color:var(--gold);margin-bottom:.5rem}
.split .split-text .name{font-size:clamp(2.5rem,5vw,4.5rem);font-weight:800;letter-spacing:2px;text-transform:uppercase;margin-bottom:1.5rem}
.split .split-text p{color:var(--text);font-size:1.05rem;line-height:2;margin-bottom:1rem;font-weight:500;width:100%;align-self:stretch}

/* ===== Projets ===== */
.cards{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1px;padding:0;background:var(--line)}
.project{position:relative;overflow:hidden;background:var(--dark-2)}
.project img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .5s ease}
.project:hover img{transform:scale(1.06)}
.project-label{
  position:absolute;bottom:0;left:0;right:0;
  padding:1.5rem;background:linear-gradient(transparent,rgba(0,0,0,.85));
  color:#fff;
}
.project-label h3{font-size:.85rem;font-weight:700;letter-spacing:2px;text-transform:uppercase}
.project-label p{font-size:.75rem;color:rgba(255,255,255,.6);margin-top:.25rem}

/* ===== Projets gallery ===== */
.projets-section{padding:5rem 0}
.projets-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:2rem;margin-top:3rem}
.projet-item{background:var(--dark-2);border:1px solid var(--line);overflow:hidden;cursor:pointer;transition:transform .3s ease,box-shadow .3s ease}
.projet-item:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(201,168,76,.18)}
.projet-item img{width:100%;height:auto;display:block;transition:transform .5s ease}
.projet-item:hover img{transform:scale(1.03)}

/* Lightbox */
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:9999;align-items:center;justify-content:center;padding:2rem}
.lightbox.open{display:flex}
.lightbox img{max-width:90vw;max-height:90vh;object-fit:contain}
.lightbox-close{position:fixed;top:1.5rem;right:2rem;font-size:2.5rem;color:#fff;cursor:pointer;line-height:1;background:none;border:none;opacity:.7}
.lightbox-close:hover{opacity:1}
.lightbox-prev,.lightbox-next{position:fixed;top:50%;transform:translateY(-50%);font-size:2.5rem;color:#fff;cursor:pointer;background:none;border:none;opacity:.6;padding:.5rem 1rem}
.lightbox-prev:hover,.lightbox-next:hover{opacity:1}
.lightbox-prev{left:1rem}
.lightbox-next{right:1rem}

/* ===== Services list ===== */
.services-list{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1px;background:var(--line);margin:2rem 0}
.services-list li{
  padding:1.2rem 1.5rem 1.2rem 1rem;background:var(--dark-2);
  font-size:.82rem;color:var(--muted);
  border-left:2px solid var(--gold);letter-spacing:.5px;
}

/* ===== Étapes ===== */
.etapes{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1px;background:var(--line);margin-top:2rem}
.etape{background:var(--dark-3);padding:2rem}
.etape-num{font-size:3rem;font-weight:800;color:var(--line);line-height:1;margin-bottom:.5rem}
.etape h3{font-size:.8rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--gold);margin-bottom:.5rem}
.etape p{font-size:.82rem;color:var(--muted);line-height:1.7}

/* ===== Partenaires ===== */
.partner-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1px;background:var(--line);margin:2rem 0}
.partner{
  background:var(--dark-2);padding:2rem 1.5rem;text-align:center;
  font-size:.8rem;color:var(--muted);font-weight:600;letter-spacing:1px;
  text-transform:uppercase;display:flex;align-items:center;justify-content:center;min-height:100px;
}
.partner:hover{color:var(--gold);background:var(--dark-3)}

/* ===== Témoignages ===== */
.temoignages{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1px;background:var(--line);margin:2rem 0}
.temoignage{background:var(--dark-2);padding:2.5rem;border-left:2px solid var(--gold)}
.temoignage p{font-style:italic;color:var(--muted);font-size:.88rem;line-height:1.9}
.temoignage footer{margin-top:1.5rem;font-size:.75rem;color:var(--gold);font-weight:700;letter-spacing:2px;text-transform:uppercase}

/* ===== Forms ===== */
.form-wrap{max-width:700px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:1rem}
label{display:grid;gap:.5rem;font-size:.7rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--muted)}
input,select,textarea{
  width:100%;padding:13px;background:var(--dark-3);
  border:1px solid var(--line);color:var(--text);font:inherit;font-size:.9rem;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--gold)}
select option{background:var(--dark-3)}
textarea{resize:vertical;margin-bottom:1rem}

/* ===== Footer ===== */
.site-footer{background:var(--dark-2);border-top:1px solid var(--line);padding:40px 0}
.ftr{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.ftr small{color:var(--muted);font-size:.7rem;letter-spacing:1px}
.ftr nav a{color:var(--muted);font-size:.7rem;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;margin-left:1.5rem;transition:color .2s}
.ftr nav a:hover{color:var(--gold)}

/* ===== Page Services ===== */
.svc-hero{
  position:relative;min-height:100vh;
  background:var(--dark);
  display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto 1fr auto;
  align-items:center;padding:80px 28%;gap:0;overflow:hidden;
}
.svc-watermark{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:55%;opacity:.07;pointer-events:none;
}
.svc-watermark img{width:100%;filter:grayscale(1)}
.svc-left{grid-column:1;grid-row:1/3;position:relative;z-index:1;padding-right:3rem}
.svc-title{
  font-size:.75rem;font-weight:800;letter-spacing:4px;
  text-transform:uppercase;color:var(--text);margin-bottom:2rem;
}
.svc-pilliers{list-style:none;padding:0}
.svc-pilliers li{
  font-size:2rem;font-weight:700;color:var(--text);
  margin-bottom:.6rem;display:flex;align-items:center;gap:.6rem;
  letter-spacing:1px;
}
.svc-check{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;
  border:2px solid var(--gold);color:var(--gold);
  font-size:1rem;font-weight:900;flex-shrink:0;
}
.svc-right{grid-column:2;grid-row:1/3;position:relative;z-index:1;padding-left:2rem}
.svc-detail-list{list-style:none;padding:0}
.svc-detail-list li{
  font-size:.95rem;font-weight:700;letter-spacing:1px;
  color:var(--text);padding:.75rem 0;border-bottom:1px solid var(--line);
  text-transform:uppercase;
}
.svc-detail-list li:first-child{border-top:1px solid var(--line)}
.svc-tagline{
  grid-column:1/-1;grid-row:3;
  font-size:clamp(1.5rem,3.5vw,2.8rem);font-weight:300;
  color:var(--text);letter-spacing:2px;padding-top:3rem;
  position:relative;z-index:1;
}

/* ===== Description des services ===== */
.svc-description{background:var(--dark-2);padding:80px 0}
.svc-desc-title{
  font-size:clamp(1.2rem,2.5vw,2rem);font-weight:300;
  letter-spacing:3px;text-transform:uppercase;color:var(--text);
  margin-bottom:1rem;
}
.svc-desc-title::after{content:"";display:block;width:50px;height:1px;background:var(--gold);margin-top:1rem}
.svc-desc-intro{
  color:var(--text);font-size:1.05rem;line-height:1.9;font-weight:500;
  max-width:800px;margin-top:1.5rem;margin-bottom:3rem;
}
.svc-desc-etapes{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin-bottom:2rem}
.svc-desc-etape h3{
  font-size:1rem;font-weight:800;letter-spacing:2px;
  text-transform:uppercase;color:var(--gold);margin-bottom:.8rem;
}
.svc-desc-etape p{font-size:.95rem;color:var(--text);line-height:1.9;font-weight:500}
.svc-signature{
  font-style:italic;color:var(--gold);font-size:1.1rem;font-weight:600;
  line-height:1.9;padding-top:2.5rem;margin-top:2.5rem;
  border-top:1px solid var(--line);max-width:800px;
}
@media(max-width:768px){
  .svc-hero{grid-template-columns:1fr;padding:60px 5%;min-height:0}
  .svc-left,.svc-right{grid-column:1;grid-row:auto;padding:0}
  .svc-right{margin-top:2rem}
  .svc-pilliers li{font-size:1.4rem}
}

/* ===== Partenaires ===== */
.partenaires-hero{
  background:var(--dark);
  display:flex;flex-direction:column;align-items:center;
  padding:6% 8% 0;text-align:center;
}
.partenaires-overlay{
  width:100%;margin-bottom:3rem;
}
.partenaires-titre{
  font-family:'Cormorant Garamond',Georgia,serif;
  font-size:clamp(5rem,12vw,11rem);font-weight:300;
  color:var(--text);letter-spacing:2px;margin-bottom:2rem;
}
.partenaires-desc{
  font-size:clamp(1.2rem,2.2vw,1.8rem);color:var(--text);line-height:1.9;
  font-weight:400;max-width:900px;margin:0 auto;
}
.partenaires-bg{
  width:50%;display:block;margin:0 auto;
}

/* ===== Accents ===== */
.gold{color:var(--gold)}
.text-center{text-align:center}
.mt-2{margin-top:2rem}
.mt-3{margin-top:3rem}
.mb-1{margin-bottom:1rem}

/* ===== Clé 3D ===== */
#key3d{position:absolute;top:20px;right:20px;width:520px;height:520px;pointer-events:none;z-index:2000}

/* ===== Responsive ===== */
@media(max-width:900px){
  .split{grid-template-columns:1fr}
  .split img{min-height:300px;max-height:400px}
  .pilliers{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:560px){
  .pilliers{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .nav{gap:10px}
  .nav a{font-size:.65rem}
  .projets-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .project img{transition:none}
  #key3d{display:none}
}