/* ===================================================================
   Top utility bar
   =================================================================== */
.top-bar {
  background-color: var(--color-secondary-dark);
  color: var(--color-bg-alt);
  font-size: 0.85rem;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.4rem;
  padding-bottom: 0.4rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.top-bar a {
  color: var(--color-bg-alt);
  text-decoration: none;
}

.top-bar a:hover {
  color: #fff;
  text-decoration: underline;
}

.top-bar .top-bar-links {
  display: flex;
  gap: 1.25rem;
}

/* ===================================================================
   Main navigation
   =================================================================== */
.site-header {
  background-color: var(--color-bg-card);
  border-bottom: 3px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-secondary-dark);
}

.nav-brand img {
  height: 48px;
  width: 48px;
}

.nav-brand .brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-brand .brand-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-secondary-dark);
}

.nav-brand .brand-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-secondary);
  border-radius: var(--radius);
  font-size: 1.25rem;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  color: var(--color-secondary);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.25rem;
}

.nav-menu > li {
  position: relative;
}

.nav-menu > li > a,
.nav-menu > li > .nav-link-btn {
  display: block;
  padding: 0.65rem 0.9rem;
  color: var(--color-secondary-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}

.nav-menu > li > a:hover,
.nav-menu > li > a:focus,
.nav-menu > li.active > a,
.nav-menu > li > .nav-link-btn:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary-dark);
}

.nav-menu .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  list-style: none;
  margin: 0;
  padding: 0.4rem;
  z-index: 50;
}

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

.nav-menu .dropdown li a {
  display: block;
  padding: 0.55rem 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.92rem;
  border-radius: var(--radius);
  font-weight: 400;
}

.nav-menu .dropdown li a:hover,
.nav-menu .dropdown li a:focus {
  background-color: var(--color-bg-alt);
  color: var(--color-primary-dark);
}

.nav-menu .has-dropdown > a::after {
  content: ' \25BE';
  font-size: 0.7em;
}

/* ===================================================================
   Mobile nav
   =================================================================== */
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-card);
    flex-direction: column;
    align-items: stretch;
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 0.5rem;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu > li > a,
  .nav-menu > li > .nav-link-btn {
    width: 100%;
    text-align: left;
  }

  .nav-menu .dropdown {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--color-primary-light);
    margin-left: 0.75rem;
    display: none;
  }

  .nav-menu .has-dropdown.open > .dropdown {
    display: block;
  }

  .site-nav {
    position: relative;
  }
}