/* ============================================================
   nav.css — Menu principal Cinassur (SOURCE UNIQUE du style).
   Scopé .nav / .mega / .burger / .mobile-menu / .backdrop uniquement
   => aucune collision avec le CSS inline des pages (.hero/.section/.card/.btn).
   Variables (--bleu-roi, --or, --gris…) héritées du :root de chaque page.
   Versionner le lien : /partials/nav.css?v=YYYY-MM-DD
   ============================================================ */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--gris)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:12px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.nav .logo{display:flex;align-items:center;gap:9px;font-family:'Montserrat';font-weight:900;font-size:22px;color:var(--bleu-roi);letter-spacing:-.01em}
.nav .logo .mark,.nav .logo .mark-fb{height:36px;width:auto;display:block;flex:0 0 auto}
.nav .logo .txt2{font-family:'Montserrat';font-weight:900;font-size:22px;color:var(--bleu-roi)}
.nav-links{list-style:none;display:flex;align-items:center;gap:6px}
.nav-links>li{position:relative}
.nav-links>li>a,.nav-links>li>span{display:inline-block;font-family:'Montserrat';font-size:14px;font-weight:600;color:var(--bleu-roi);padding:10px 12px;cursor:pointer;border-bottom:2px solid transparent}
.nav-links>li:hover>a,.nav-links>li:hover>span{border-bottom-color:var(--or)}
.nav-links>li>a[aria-current="page"],.nav-links>li>span[aria-current="page"]{border-bottom-color:var(--or)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav .link-client{display:inline-flex;align-items:center;gap:7px;font-family:'Montserrat';font-weight:600;font-size:14px;color:var(--bleu-roi);width:42px;height:42px;justify-content:center;border:1.5px solid var(--gris);border-radius:50%;transition:border-color .15s, background .15s}
.nav .link-client:hover{border-color:var(--bleu-roi);background:var(--neige)}
.nav .link-client svg{width:21px;height:21px;stroke:var(--bleu-roi);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.nav .link-client .lc-txt{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.nav .btn-cta{padding:10px 18px;font-size:14px}
.mega{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border:1px solid var(--gris);border-radius:var(--radius);box-shadow:0 18px 44px rgba(14,42,89,.16);padding:22px;min-width:640px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;opacity:0;visibility:hidden;transition:opacity .18s, transform .18s}
.nav-links>li:hover .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega.small{min-width:300px;grid-template-columns:1fr}
.mega .col-title{font-family:'Montserrat';font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--bleu-clair);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.mega .col-title:before{content:"";width:9px;height:9px;background:var(--or);transform:rotate(45deg);flex:0 0 auto}
.mega a.mlink{display:block;font-family:'Inter';font-weight:500;font-size:14.5px;color:var(--charbon);padding:6px 0}
.mega a.mlink:hover{color:var(--orange)}
.mega .seeall{margin-top:8px;font-family:'Montserrat';font-weight:700;font-size:13px;color:var(--bleu-roi)}
.burger{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.burger span{width:26px;height:2.5px;background:var(--bleu-roi);border-radius:2px;transition:.25s}
.mobile-menu{display:none;position:fixed;inset:0 0 0 auto;width:min(86vw,360px);background:#fff;z-index:200;box-shadow:-12px 0 40px rgba(14,42,89,.2);padding:76px 24px 24px;overflow-y:auto;transform:translateX(100%);transition:transform .28s}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{display:block;font-family:'Montserrat';font-weight:600;font-size:16px;color:var(--bleu-roi);padding:12px 0;border-bottom:1px solid var(--gris)}
.mobile-menu .sub a{font-family:'Inter';font-weight:500;font-size:14.5px;padding:8px 0 8px 16px;border-bottom:0;color:var(--charbon)}
.mobile-menu .grp{font-family:'Montserrat';font-weight:800;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--bleu-clair);margin:18px 0 4px}
.mobile-menu .btn-cta{padding:13px 24px;font-size:15px}
.backdrop{display:none;position:fixed;inset:0;background:rgba(14,42,89,.35);z-index:150}
.backdrop.show{display:block}
@media(max-width:820px){
  .nav-links,.nav .link-client{display:none}
  .burger{display:flex}.mobile-menu{display:block}
}