:root{
  --brand:#1d7d7a;
  --text:#27323a;
  --bg:#ffffff;
  --muted:#6b7c8a;
  --card:#f6f8f9;
  --shadow:0 10px 30px rgba(0,0,0,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:var(--bg);color:var(--text);}
a{color:var(--brand);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:24px}
.header{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid #eee;z-index:10}
.nav{display:flex;align-items:center;gap:18px}
.nav .spacer{flex:1}
.logo{display:flex;align-items:center;gap:12px;font-weight:700}
.logo img{height:42px;width:auto;border-radius:12px}
.lang-switch{display:flex;gap:8px}
.lang-switch button{border:1px solid #d9e1e7;padding:8px 12px;border-radius:10px;background:#fff;cursor:pointer}
.lang-switch button.active{background:var(--brand);color:white;border-color:var(--brand)}

.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;padding:36px 0}
.hero .card{background:var(--card);padding:28px;border-radius:var(--radius);box-shadow:var(--shadow)}
.hero h1{font-size:40px;margin:0 0 10px}
.subtitle{color:var(--muted);margin-top:6px}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:24px 0 8px}
.gallery img{width:100%;height:220px;object-fit:cover;border-radius:16px;cursor:pointer;box-shadow:var(--shadow);transition:transform .2s ease}
.gallery img:hover{transform:translateY(-3px)}

.card{background:var(--card);padding:22px;border-radius:var(--radius);box-shadow:var(--shadow)}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}

.footer{border-top:1px solid #eee;margin-top:30px;padding:28px 0;color:var(--muted);font-size:14px}
.footer .contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}

#map{width:100%;height:300px;border:0;border-radius:14px;box-shadow:var(--shadow);}

/* Lightbox */
#lightbox{position:fixed;inset:0;background:rgba(0,0,0,.8);display:none;align-items:center;justify-content:center;z-index:100}
#lightbox.active{display:flex}
#lightbox img{max-width:92vw;max-height:88vh;border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
#lightbox .close{position:fixed;top:16px;right:20px;background:#fff;border:none;border-radius:999px;padding:10px 14px;cursor:pointer;font-weight:700}
#lightbox .caption{position:fixed;bottom:24px;color:#fff;font-size:14px;opacity:.9}

/* i18n helpers */
[data-lang="fr"] .en{display:none}
[data-lang="en"] .fr{display:none}

.tech-list a.card{display:block;transition:transform .15s ease}
.tech-list a.card:hover{transform:translateY(-3px)}