/* Navigation */
.site-nav {
  background: var(--color-white);
  border-bottom: 1px solid #eee;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.nav-list {
  max-width: 1100px;
  margin: 0 auto;
  list-style: none;
  display: flex;
  gap: 0;
}

.nav-item { position: relative; }

.nav-item > a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-muted);
  font-size: 1.0625rem;
  font-family: var(--font-heading);
  font-weight: 400;
  text-decoration: none;
  transition: color 0.2s;
}

.nav-item > a:hover {
  color: var(--color-navy);
}

.nav-item.is-active > a {
  color: var(--color-navy);
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-thickness: 2px;
}

.nav-item > a:focus {
  outline: 2px solid var(--color-steel);
  outline-offset: -2px;
}

/* Dropdowns */
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border: 1px solid #e0e0e0;
  border-top: 2px solid var(--color-navy);
  list-style: none;
  z-index: 100;
}

.has-dropdown:hover .nav-dropdown,
.has-dropdown:focus-within .nav-dropdown {
  display: block;
}

.nav-dropdown-item a {
  display: block;
  padding: 0.6rem 1rem;
  color: var(--color-dark);
  font-size: 0.85rem;
  text-decoration: none;
  transition: background 0.2s;
}

.nav-dropdown-item a:hover,
.nav-dropdown-item.is-active a {
  background: var(--color-light-gray);
  color: var(--color-navy);
}

.nav-dropdown-item a:focus {
  outline: 2px solid var(--color-steel);
  outline-offset: -2px;
}

/* Hamburger toggle (hidden on desktop) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  position: absolute;
  right: 1rem;
  top: 0.5rem;
}

.nav-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  position: relative;
  transition: background 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  position: absolute;
  transition: transform 0.2s ease, top 0.2s ease;
}

.nav-toggle-icon::before { top: -7px; }
.nav-toggle-icon::after { top: 7px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-toggle:focus {
  outline: 2px solid var(--color-steel);
  outline-offset: 2px;
}