/* En-tête partagé : navigation principale, mega-menu « Solutions par métier », menu mobile.
   Chargé après le CSS de chaque page ; s'appuie sur ses variables (--blue, --ink, --line, --pad-x…). */

.hdr-nav{display:flex;align-items:center;gap:4px}
.hdr-nav>a,.hdr-trigger{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 14px;border-radius:10px;color:var(--ink-2);font:inherit;font-weight:600;font-size:15.5px;line-height:1;background:none;border:0;cursor:pointer;text-decoration:none}
.hdr-nav>a:hover,.hdr-trigger:hover,.hdr-trigger[aria-expanded="true"]{color:var(--blue);background:var(--blue-50)}
.hdr-nav [aria-current="page"]{color:var(--blue)}
.hdr-chev{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}
.hdr-trigger[aria-expanded="true"] .hdr-chev{transform:rotate(180deg)}
.header-cta{display:flex;align-items:center;gap:12px}
.cta-short{display:none}

/* Mega-menu (bureau) */
.mega{position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:0 24px 40px -24px rgba(15,23,42,.28)}
.mega[hidden]{display:none}
.mega.is-open{animation:megaIn .16s ease-out}
@keyframes megaIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
.mega-inner{max-width:calc(var(--maxw) + 2*var(--pad-x));margin:0 auto;padding:28px var(--pad-x) 22px}
.mega-intro{margin:0 0 18px;color:var(--muted);font-size:15px}
.mega-intro b{color:var(--ink)}
.mega-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.mega-card{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr);gap:0 14px;padding:16px;border:1px solid transparent;border-radius:14px}
.mega-card:hover,.mega-card:focus-within{background:var(--blue-50);border-color:var(--blue-400)}
.mega-ico{width:44px;height:44px;border-radius:12px;background:var(--blue-50);color:var(--blue);display:grid;place-items:center}
.mega-card:hover .mega-ico,.mega-card:focus-within .mega-ico{background:var(--bg)}
.mega-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.mega-title{display:block;font-weight:800;font-size:16px;line-height:1.3;color:var(--ink);text-decoration:none}
.mega-title::after{content:"";position:absolute;inset:0;border-radius:14px}
.mega-ex{margin:4px 0 0;font-size:14px;line-height:1.45;color:var(--ink-2);font-weight:600}
.mega-txt{margin:6px 0 0;font-size:13.5px;line-height:1.5;color:var(--muted)}
.mega-sub{position:relative;z-index:1;display:inline-flex;align-items:center;gap:6px;min-height:44px;margin-top:2px;font-weight:700;font-size:14px;color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.mega-sub{white-space:nowrap}
.mega-sub svg{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mega-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted)}
.mega-all{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-weight:800;color:var(--blue);text-decoration:none}
.mega-all:hover{text-decoration:underline;text-underline-offset:3px}
.mega-all svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* Bouton et panneau mobiles */
.hdr-burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink);cursor:pointer;place-items:center;padding:0}
.hdr-burger svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.hdr-burger .i-close,.hdr-burger[aria-expanded="true"] .i-open{display:none}
.hdr-burger[aria-expanded="true"] .i-close{display:block}
.hdr-mobile{display:none}

@media (max-width:1000px){
  .mega-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .hdr-nav,.mega{display:none!important}
  .hdr-burger{display:grid}
  .header-cta .cta-long{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
  .header-cta .cta-short{display:inline}
  .header-cta .btn{padding:0 16px}
  .hdr-mobile{position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px var(--pad-x) 24px;max-height:calc(100vh - 76px);max-height:calc(100dvh - 76px);overflow-y:auto}
  .hdr-mobile.open{display:block}
  .mm-row{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:52px;padding:0 4px;border:0;border-bottom:1px solid var(--line);background:none;font:inherit;font-weight:700;font-size:17px;color:var(--ink);text-align:left;cursor:pointer;text-decoration:none}
  .mm-row .hdr-chev{width:20px;height:20px}
  .mm-row[aria-expanded="true"] .hdr-chev{transform:rotate(180deg)}
  .mm-panel{padding:6px 0 10px}
  .mm-panel[hidden]{display:none}
  .mm-fam{display:block;padding:10px 12px;border-radius:12px;text-decoration:none}
  .mm-fam:active,.mm-fam:hover{background:var(--blue-50)}
  .mm-fam b{display:block;font-size:16px;color:var(--ink);line-height:1.3}
  .mm-fam span{display:block;margin-top:2px;font-size:14px;color:var(--muted);line-height:1.4}
  .mm-sub{display:flex;align-items:center;min-height:44px;margin:0 0 0 12px;padding:0 12px;font-weight:700;font-size:15px;color:var(--blue);text-decoration:underline;text-underline-offset:3px}
  .mm-all{display:flex;align-items:center;min-height:48px;padding:0 12px;font-weight:800;font-size:15.5px;color:var(--blue);text-decoration:none}
  .hdr-mobile .btn{margin-top:18px;width:100%}
}
@media (max-width:760px){
  .hdr-mobile{max-height:calc(100vh - 64px);max-height:calc(100dvh - 64px)}
}
@media (prefers-reduced-motion:reduce){
  .mega.is-open{animation:none}
  .hdr-chev{transition:none}
}