/* /assets/header.css */
header{
  background:#fff;
  box-shadow:0 2px 4px rgba(0,0,0,.06);
  position:sticky; top:0; z-index:50;
}
.header-container{
  max-width:1200px; margin:0 auto; padding:16px 24px;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
}

/* NAV (nested) */
.nav-root{ display:flex; align-items:center; gap:18px; }
@media (max-width: 768px){
  .nav-root{ display:none; flex-direction:column; align-items:stretch; width:100%; margin-top:12px; }
  .nav-root.open{ display:flex; }
}
.nav-ctas .nav-cta-button{
  background:#263f8a; color:#fff; padding:8px 16px; border-radius:4px;
  font-weight:700; font-size:14px; margin-left:8px; text-decoration:none;
}
.nav-ctas .nav-cta-button:hover{ background:#1f3574; }

.nav-group{ position:relative; display:flex; align-items:center; }
.group-label{
  background:transparent; border:none; cursor:pointer; color:#1a1a1a;
  font-weight:600; font-size:16px; padding:8px 10px; border-radius:6px;
}
.group-label:hover{ color:#3155A4; }

.dropdown{
  position:absolute; top:100%; left:0; background:#fff;
  border:1px solid #e5e7eb; border-radius:10px;
  box-shadow:0 10px 24px rgba(0,0,0,.08);
  min-width:220px; padding:8px; display:none; z-index:60;
}
.nav-group:hover .dropdown{ display:block; } /* desktop hover */

.dropdown-link{
  display:block; padding:10px 12px; border-radius:8px;
  text-decoration:none; color:#1a1a1a; font-size:15px;
}
.dropdown-link:hover{ background:#f5f7fb; color:#3155A4; }

/* Mobile dropdowns open when group has .open */
@media (max-width: 768px){
  .nav-group{ flex-direction:column; align-items:stretch; width:100%; }
  .nav-group .dropdown{
    position:static; display:none; border:1px solid #eef0f4; box-shadow:none; margin:6px 0;
  }
  .nav-group.open .dropdown{ display:block; }
}

/* a11y helper */
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}