/* =============================================
   NAVIGATION & FOOTER
   ============================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-4) 0;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-main {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  color: var(--color-navy);
  letter-spacing: -0.01em;
}
.logo-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  margin-left: auto;
}
.nav-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition);
  padding: var(--space-1) 0;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: var(--radius-full);
}
.nav-link:hover { color: var(--color-navy); }
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--color-navy); font-weight: 700; }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-navy);
  transition: background var(--transition);
}
.mobile-toggle:hover { background: var(--color-surface-2); }

.mobile-nav {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) 0 var(--space-6);
}
.mobile-nav-link {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition);
}
.mobile-nav-link:hover { color: var(--color-navy); }

/* FOOTER */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.8);
  padding: var(--space-16) 0 var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}
.footer-brand {}
.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  text-decoration: none;
}
.footer-logo .logo-main { color: #fff; font-size: 1.1rem; }
.footer-logo .logo-sub { color: rgba(255,255,255,0.5); }
.footer-tagline {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  max-width: 30ch;
  margin-bottom: var(--space-6);
}
.footer-social {
  display: flex;
  gap: var(--space-3);
}
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  transition: background var(--transition), color var(--transition);
}
.social-link:hover { background: var(--color-accent); color: #fff; }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #fff;
  margin-bottom: var(--space-4);
}
.footer-links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-copy { font-size: var(--text-xs); color: rgba(255,255,255,0.35); }
.footer-legal { display: flex; gap: var(--space-5); }
.footer-legal a { font-size: var(--text-xs); color: rgba(255,255,255,0.35); transition: color var(--transition); }
.footer-legal a:hover { color: rgba(255,255,255,0.7); }

/* Announcement bar */
.announce-bar {
  background: var(--color-navy);
  color: #fff;
  text-align: center;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.announce-bar a { color: var(--color-accent); text-decoration: underline; }

@media (max-width: 1024px) {
  .site-nav { display: none; }
  .header-actions .btn { display: none; }
  .mobile-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}