/* ===== Menu burger (mobile) + bouton retour-haut — composant partagé Kaptis ===== */
.burger { display: none; background: none; border: none; cursor: pointer; width: 42px; height: 42px; padding: 9px; flex-direction: column; justify-content: center; gap: 5px; flex-shrink: 0; }
.burger span { display: block; height: 2px; width: 100%; background: #ffffff; border-radius: 2px; transition: transform .25s ease, opacity .2s ease; }

.to-top { position: fixed; bottom: 22px; right: 22px; width: 46px; height: 46px; border-radius: 50%; border: none; cursor: pointer; background: linear-gradient(135deg, #FF6B00, #00C853); display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity .25s ease, transform .25s ease; box-shadow: 0 8px 22px rgba(255, 107, 0, .35); z-index: 60; }
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top svg { width: 20px; height: 20px; stroke: #fff; }

@media (max-width: 960px) {
  .burger { display: flex; }
  /* Menu déroulant sous le bandeau (spécificité élevée pour battre le display:none inline) */
  .site-header nav .nav-links {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0;
    background: #0A192F; border-bottom: 1px solid #1e2a44;
    padding: 8px 24px 16px; box-shadow: 0 18px 30px rgba(0, 0, 0, .35);
    opacity: 0; transform: translateY(-8px); pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .site-header.nav-open nav .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .site-header nav .nav-links a { padding: 13px 2px; font-size: 1rem; border-bottom: 1px solid #1e2a44; }
  .site-header nav .nav-links a:last-child { border-bottom: none; }
  .site-header.nav-open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .site-header.nav-open .burger span:nth-child(2) { opacity: 0; }
  .site-header.nav-open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}