/* ========================================================================
   Header / Nav / Footer
   ======================================================================== */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(248,250,249,.86);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--color-border);
}
:root[data-theme="dark"] .site-header,
@media (prefers-color-scheme: dark){ .site-header{ background:rgba(12,22,32,.86); } }
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:24px; height:76px;
}
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:800; font-size:1.18rem; color:var(--color-ink); flex-shrink:0; }
.brand-mark{
  width:38px; height:38px; border-radius:11px; flex-shrink:0;
  background:linear-gradient(150deg, var(--teal-500), var(--teal-700));
  display:flex; align-items:center; justify-content:center; color:#fff;
  box-shadow:var(--shadow-sm);
}
.brand-mark svg{ width:21px; height:21px; }
.brand-domain{ font-weight:600; color:var(--color-text-muted); font-size:.72rem; letter-spacing:.02em; display:block; font-family:var(--font-body); }

.main-nav{ display:flex; align-items:center; gap:2px; }
.nav-item{ position:relative; }
.nav-link{
  display:flex; align-items:center; gap:5px;
  padding:10px 14px; border-radius:var(--radius-sm);
  font-weight:600; font-size:.94rem; color:var(--color-text);
  background:none; border:none; appearance:none; -webkit-appearance:none;
  font-family:inherit;
  transition:background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.nav-link:hover, .nav-item.is-open > .nav-link{ background:var(--color-primary-soft); color:var(--color-primary-strong); }
.nav-item.current > .nav-link{ color:var(--color-primary-strong); }
.nav-link .chev{ width:14px; height:14px; transition:transform var(--dur-fast) var(--ease); }
.nav-item.is-open .nav-link .chev{ transform:rotate(180deg); }

.nav-dropdown{
  position:absolute; top:calc(100% + 10px); left:0;
  min-width:300px; background:var(--color-surface); border:1px solid var(--color-border);
  border-radius:var(--radius-md); box-shadow:var(--shadow-lg); padding:10px;
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease), visibility var(--dur-base);
}
.nav-item.is-open .nav-dropdown{ opacity:1; visibility:visible; transform:translateY(0); }
.nav-dropdown a{
  display:block; padding:10px 12px; border-radius:var(--radius-sm);
}
.nav-dropdown a:hover{ background:var(--color-surface-alt); }
.nav-dropdown a strong{ display:block; font-size:.92rem; color:var(--color-ink); }
.nav-dropdown a span{ display:block; font-size:.8rem; color:var(--color-text-muted); margin-top:2px; }

.header-actions{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
.nav-toggle{
  display:none; background:none; border:1px solid var(--color-border); border-radius:10px;
  width:42px; height:42px; align-items:center; justify-content:center; color:var(--color-ink);
}

@media (max-width:1020px){
  .main-nav{ display:none; }
  .header-actions .btn-secondary{ display:none; }
  .nav-toggle{ display:flex; }
}

/* Mobile drawer */
.mobile-nav{
  position:fixed; inset:0; z-index:200; display:none;
  background:var(--color-bg);
  overflow-y:auto;
}
.mobile-nav.is-open{ display:block; }
.mobile-nav-header{
  display:flex; align-items:center; justify-content:space-between;
  height:76px; padding-inline:var(--gutter); border-bottom:1px solid var(--color-border);
}
.mobile-nav-body{ padding:20px var(--gutter) 60px; }
.mobile-group{ border-bottom:1px solid var(--color-border); padding:8px 0; }
.mobile-group-title{
  width:100%; display:flex; justify-content:space-between; align-items:center;
  padding:14px 4px; font-family:var(--font-display); font-weight:800; font-size:1.02rem;
  background:none; border:none; color:var(--color-ink);
}
.mobile-group-items{ display:none; padding-bottom:10px; }
.mobile-group.is-open .mobile-group-items{ display:block; }
.mobile-group.is-open .chev{ transform:rotate(180deg); }
.mobile-group-items a{ display:block; padding:10px 4px; color:var(--color-text-muted); font-weight:600; }
.mobile-group-items a strong{ display:block; color:var(--color-ink); font-size: .96rem;}
.mobile-single a{ display:block; padding:14px 4px; font-family:var(--font-display); font-weight:800; font-size:1.02rem; color:var(--color-ink); }
.mobile-nav-cta{ margin-top:24px; display:flex; flex-direction:column; gap:10px; }

/* Footer */
.site-footer{ background:var(--navy-900); color:var(--ink-200); padding-top:clamp(48px,5vw,80px); }
.footer-top{ display:grid; grid-template-columns:1.3fr repeat(3, 1fr); gap:40px; padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,.09); }
.footer-brand p{ color:var(--ink-300); margin-top:14px; max-width:280px; }
.footer-brand .brand{ color:#fff; }
.footer-brand .brand-domain{ color:var(--ink-300); }
.footer-col h4{ color:#fff; font-size:.82rem; letter-spacing:.06em; text-transform:uppercase; margin-bottom:16px; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col a{ color:var(--ink-300); font-size:.94rem; transition:color var(--dur-fast) var(--ease); }
.footer-col a:hover{ color:#fff; }
.footer-social{ display:flex; gap:10px; margin-top:18px; }
.footer-social a{ width:36px; height:36px; border-radius:50%; background:rgba(255,255,255,.08); display:flex; align-items:center; justify-content:center; }
.footer-social a:hover{ background:rgba(255,255,255,.16); }
.footer-social svg{ width:16px; height:16px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  padding-block:22px; font-size:.84rem; color:var(--ink-400);
}
.footer-bottom-links{ display:flex; gap:18px; flex-wrap:wrap; }
.footer-legal-note{ font-size:.78rem; color:var(--ink-400); background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.09); border-radius:var(--radius-md); padding:16px 18px; margin-block:8px 28px; }
.footer-legal-note strong{ color:#fff; }

@media (max-width:900px){
  .footer-top{ grid-template-columns:1fr 1fr; row-gap:36px; }
}
@media (max-width:560px){
  .footer-top{ grid-template-columns:1fr; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}