:root{--green:#15803d;--green2:#16a34a;--dark:#0b1e14;--blue:#0a6bff;--navy:#0a2a6b;--bg:#f6faf7;--card:#fff;--muted:#5b6b60;--radius:18px;--shadow:0 15px 40px rgba(0,0,0,.1)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;background:var(--bg);color:#12211a;line-height:1.6}
h1,h2{font-family:Fraunces,serif;line-height:1.1;letter-spacing:-.5px}
h2{font-size:clamp(1.8rem,3.5vw,2.6rem);margin:.3rem 0}h2 span{color:var(--green)}
.container{max-width:1180px;margin:auto;padding:0 20px}
.section{padding:70px 0}.alt{background:#fff}.center{text-align:center}
.kicker{color:var(--green);font-weight:800;text-transform:uppercase;letter-spacing:2px;font-size:.8rem}
.subtitle{color:var(--muted);margin:8px 0 28px;max-width:700px}.center .subtitle{margin-inline:auto}
/* topbar */
.topbar{background:var(--dark);color:#d7efe0;font-size:.82rem;display:flex;justify-content:space-between;padding:8px 22px;flex-wrap:wrap;gap:6px}
.topbar .dot{margin:0 8px}
/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid #e5eee7;transition:.3s}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#111}
.brand img{height:46px;object-fit:contain;background:#fff;border-radius:10px;padding:2px}
.brand-text{font-weight:800;font-size:1.35rem;letter-spacing:1px}.brand-text b{color:var(--green)}.brand-text small{display:block;font-size:.62rem;letter-spacing:4px;color:#555}
.nav-links{display:flex;gap:22px;list-style:none;align-items:center}
.nav-links a{text-decoration:none;color:#223;font-weight:600;font-size:.95rem}.nav-links a.active,.nav-links a.active,.nav-links a:hover{color:var(--green)}
.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;border:0;cursor:pointer;font-weight:700;border-radius:999px;padding:13px 24px;transition:.2s}
.btn-primary{background:linear-gradient(135deg,#16a34a,#0d5c2e);color:#fff;box-shadow:0 10px 25px rgba(22,163,74,.35)}.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{border:2px solid #cfe6d6;color:#0d5c2e;background:#fff}.btn-sm{padding:9px 18px;font-size:.88rem;background:var(--dark);color:#fff}
.burger{display:none;background:none;border:0;flex-direction:column;gap:5px;cursor:pointer}.burger span{width:26px;height:3px;background:#111;border-radius:3px;display:block}
/* hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#eaf7ef,#f6faf7 70%);padding:60px 0 90px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;position:relative;z-index:2}
.badge{background:#fff;border:1px solid #d6eadc;padding:7px 14px;border-radius:999px;font-size:.82rem;font-weight:700;display:inline-flex;gap:8px;align-items:center}.pulse{width:10px;height:10px;background:#16a34a;border-radius:50%;animation:p 1.5s infinite}@keyframes p{50%{box-shadow:0 0 0 8px rgba(22,163,74,.15)}}
.hero h1{font-size:clamp(2.2rem,5vw,3.6rem);margin:16px 0}.green{color:var(--green)}
.hero-text p{color:#3c4f44;font-size:1.05rem}
.hero-btns{display:flex;gap:12px;margin:22px 0;flex-wrap:wrap}
.hero-stats{display:flex;gap:28px;margin-top:10px}.hero-stats strong{font-size:1.6rem;display:block}.hero-stats span{color:var(--muted);font-size:.85rem}
.hero-visual{position:relative}
.slider-row{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center}
.hero-slider{position:relative;width:100%;aspect-ratio:2/1;border-radius:22px;overflow:hidden;box-shadow:var(--shadow);border:6px solid #fff;background:#eaf7ef}
.hero-slider .slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .5s ease}
.hero-slider .slide.active{opacity:1}
.slide-nav{width:40px;height:40px;border-radius:50%;border:0;background:#fff;color:var(--dark);font-size:1.5rem;line-height:1;cursor:pointer;display:grid;place-items:center;box-shadow:var(--shadow);transition:.2s}
.slide-nav:hover{transform:scale(1.12);color:var(--green)}
.slide-dots{display:flex;justify-content:center;gap:8px;margin-top:12px}
.slide-dots button{width:10px;height:10px;border-radius:50%;border:0;background:#c9dccd;cursor:pointer;padding:0;transition:.2s}
.slide-dots button.active{background:var(--green);transform:scale(1.25)}
.mini-cards{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.mini{background:#fff;border-radius:12px;padding:9px 14px;font-size:.82rem;font-weight:700;box-shadow:var(--shadow);border:1px solid #e6efe8}
.wave{position:absolute;bottom:-1px;left:0;right:0;height:60px;background:#fff;border-radius:60% 60% 0 0 / 100% 100% 0 0}
/* filiales */
.filiales-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:10px}
.filiale-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border-top:6px solid #ccc;transition:.25s}
.filiale-card:hover{transform:translateY(-6px)}
.filiale-card img{width:100%;height:165px;object-fit:contain;background:#f8faf8;padding:14px;border-bottom:1px solid #eee}
.filiale-card h3{padding:14px 16px 0}.filiale-card .tag{padding:0 16px;color:var(--green);font-weight:800;font-size:.8rem}.filiale-card p{padding:8px 16px;color:#43554a;font-size:.9rem}.filiale-card ul{list-style:none;padding:0 16px 18px;font-size:.85rem}.filiale-card ul li:before{content:"✓ ";color:var(--green);font-weight:800}
.blue{border-color:#0a6bff}.green{border-color:#16a34a}.red{border-color:#dc2626}.violet{border-color:#7c3aed}
/* projects */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0 22px}
.filter{border:1px solid #cfe0d4;background:#f1f7f2;padding:8px 18px;border-radius:999px;cursor:pointer;font-weight:700}.filter.active,.filter:hover{background:var(--dark);color:#fff;border-color:var(--dark)}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.proj{background:#fbfdfb;border:1px solid #e2ece4;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;cursor:zoom-in;position:relative}
.proj:hover{transform:translateY(-5px)}.proj img{width:100%;height:230px;object-fit:cover;display:block}
.proj-body{padding:16px}.pill{font-size:.72rem;font-weight:800;padding:5px 11px;border-radius:999px;display:inline-block;margin-bottom:8px;color:#fff}.pill.green{background:#16a34a}.pill.blue{background:#0a6bff}.pill.dark{background:#0a2a6b}.pill.orange{background:#ea580c}
.proj h3{font-size:1.08rem;margin-bottom:6px}.proj p{font-size:.88rem;color:#4b5d52}
/* encours */
.encours-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0 26px}
.encours-card{background:#fff;border:1px solid #e2ece4;border-radius:16px;padding:20px;text-align:center;box-shadow:0 8px 20px rgba(0,0,0,.05)}.encours-card i{font-size:1.7rem;color:var(--green);margin-bottom:10px}
.banner{background:linear-gradient(135deg,#0b3d22,#16a34a);color:#fff;border-radius:20px;padding:28px;display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}.banner .btn-primary{background:#fff;color:#0b3d22}
/* partners */
.partners{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:18px}.partners span{background:#f1f7f2;border:1px solid #d8e7dc;padding:12px 22px;border-radius:999px;font-weight:800}
/* contact */
.contact-sec{background:linear-gradient(180deg,#fff,#eaf7ef)}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:36px;align-items:start}
.contact-infos{display:grid;gap:10px;margin-top:16px;font-weight:700}.contact-infos i{color:var(--green);margin-right:8px}.contact-infos a{color:inherit;text-decoration:none}
.form{background:#fff;border:1px solid #e2ece4;border-radius:18px;padding:22px;box-shadow:var(--shadow);display:grid;gap:12px}.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form input,.form select,.form textarea{width:100%;border:1.5px solid #d8e7dc;border-radius:12px;padding:12px 14px;font:inherit}.form input:focus,.form textarea:focus{outline:2px solid #16a34a;border-color:#16a34a}
.form-ok{display:none;color:#15803d;font-weight:700}
/* footer */
footer{background:#07130c;color:#cfe3d4;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px;padding:50px 20px}
.f-brand img{height:54px;background:#fff;border-radius:12px;padding:4px}.f-brand h4{color:#fff;margin:10px 0 6px;font-size:1.2rem}
footer h5{color:#fff;margin-bottom:12px}footer ul{list-style:none;display:grid;gap:8px;font-size:.92rem}footer a{color:#cfe3d4;text-decoration:none}footer a:hover{color:#fff}
.socials{display:flex;gap:10px;margin-top:14px}.socials a{width:36px;height:36px;display:grid;place-items:center;background:#14301f;border-radius:50%}
.copy{text-align:center;border-top:1px solid #1c3a27;padding:16px;font-size:.85rem}
.btn-top{margin-top:14px;display:inline-block}
/* lightbox */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.85);display:none;place-items:center;z-index:99;padding:20px}.lightbox.open{display:grid}.lightbox img{max-width:92vw;max-height:88vh;border-radius:14px}.lightbox span{position:absolute;top:18px;right:28px;font-size:2.6rem;color:#fff;cursor:pointer}
/* bouton info animé devant le titre des projets */
.info-btn{position:relative;width:22px;height:22px;border-radius:50%;border:0;background:transparent;color:var(--green);font-size:1.02rem;line-height:1;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;vertical-align:-2px;margin-right:7px;padding:0;transition:color .2s,transform .2s}
.info-btn i{line-height:1}
.info-btn::before{content:"";position:absolute;inset:-2px;border-radius:50%;border:2px solid rgba(22,163,74,.55);animation:infoPulse 2s ease-out infinite}
@keyframes infoPulse{0%{transform:scale(1);opacity:.9}70%{transform:scale(1.6);opacity:0}100%{transform:scale(1.6);opacity:0}}
.info-btn:hover{color:var(--dark);transform:scale(1.18)}
/* modal projet */
.modal{position:fixed;inset:0;background:rgba(7,19,12,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:none;place-items:center;z-index:98;padding:20px}
.modal.open{display:grid}
.modal-box{background:#fff;border-radius:20px;max-width:620px;width:100%;max-height:85vh;overflow:auto;padding:26px 28px 28px;position:relative;box-shadow:var(--shadow);animation:modalIn .28s ease}
@keyframes modalIn{from{transform:translateY(22px) scale(.97);opacity:0}to{transform:none;opacity:1}}
.modal-close{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;border:0;background:#f1f7f2;color:#12211a;font-size:1.05rem;cursor:pointer;display:grid;place-items:center;transition:.2s}
.modal-close:hover{background:var(--dark);color:#fff}
#modalTitle{font-size:1.45rem;margin:10px 0 14px}
.ai-dots{display:flex;gap:6px;padding:4px 0 8px}
.ai-dots span{width:8px;height:8px;border-radius:50%;background:var(--green);animation:aiBounce 1.1s infinite}
.ai-dots span:nth-child(2){animation-delay:.15s}.ai-dots span:nth-child(3){animation-delay:.3s}
@keyframes aiBounce{0%,60%,100%{transform:translateY(0);opacity:.35}30%{transform:translateY(-6px);opacity:1}}
.ai-text{font-size:.95rem;color:#37473d;line-height:1.8;white-space:pre-wrap;min-height:60px}
.ai-cursor{display:inline-block;width:9px;height:1.05em;background:var(--green);vertical-align:text-bottom;margin-left:2px;animation:aiBlink .7s steps(1) infinite}
@keyframes aiBlink{50%{opacity:0}}
#toTop{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;border:0;background:var(--dark);color:#fff;font-size:1.3rem;cursor:pointer;display:none;z-index:60}
@media(max-width:1000px){.filiales-grid,.projects-grid,.encours-grid{grid-template-columns:repeat(2,1fr)}.hero-grid,.contact-grid,.footer-grid{grid-template-columns:1fr}.nav-links{position:fixed;top:72px;right:0;flex-direction:column;background:#fff;width:min(320px,85vw);height:calc(100vh - 72px);padding:26px;box-shadow:-10px 0 30px rgba(0,0,0,.1);align-items:flex-start;display:none;z-index:60}.nav-links.open{display:flex;animation:menuIn .25s ease}.burger{display:flex}}
@keyframes menuIn{from{transform:translateX(30px);opacity:0}to{transform:none;opacity:1}}
@media(max-width:600px){
.filiales-grid,.projects-grid,.encours-grid,.form .row{grid-template-columns:1fr}
.topbar-right{display:none}
.proj img{height:200px}
.hero{padding:36px 0 64px}
.section{padding:48px 0}
.hero-stats{flex-wrap:wrap;gap:14px 22px}
.slider-row{gap:7px}
.slide-nav{width:31px;height:31px;font-size:1.25rem}
.slide-dots{margin-top:9px}.slide-dots button{width:8px;height:8px}
.mini-cards{margin-top:10px;gap:7px}.mini{font-size:.76rem;padding:7px 11px}
.banner{padding:20px}
.modal{padding:10px}
.modal-box{padding:18px 16px 22px;border-radius:16px}
#modalTitle{font-size:1.22rem;margin:8px 0 10px}
.ai-text{font-size:.92rem;line-height:1.75}
.modal-close{top:10px;right:10px;width:32px;height:32px}
.partners span{padding:9px 15px;font-size:.9rem}
.form{padding:16px}
.footer-grid{padding:38px 20px}
}