/*
 * nav.css — top navigation. Extracted from top_nav.inc.php.
 */

.top-navigation {
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 2px solid var(--brand-blue);
  margin-bottom: var(--space-m);
  padding: 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: relative;
  border-radius: var(--radius);
}

.hamburger-menu {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 28px;
  color: var(--brand-blue);
  transition: color 0.3s ease;
  border-radius: 6px;
}

.hamburger-menu:hover {
  color: var(--brand-green);
}

.hamburger-icon,
.close-icon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.close-icon {
  opacity: 0;
  transform: rotate(90deg);
}

.hamburger-menu[aria-expanded="true"] .hamburger-icon {
  opacity: 0;
  transform: rotate(-90deg);
}

.hamburger-menu[aria-expanded="true"] .close-icon {
  opacity: 1;
  transform: rotate(0deg);
}

.top-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.top-navigation li {
  margin: 0;
  padding: 0;
}

.top-navigation a {
  display: block;
  padding: 15px 20px;
  color: var(--brand-blue);
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s ease, color 0.3s ease;
  border-bottom: 3px solid transparent;
}

.top-navigation a svg {
  display: inline-block;
  vertical-align: middle;
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.top-navigation a:hover,
.top-navigation a:focus {
  background-color: #f0f7ff;
  color: var(--brand-green);
  border-bottom-color: var(--brand-green);
}

.top-navigation a.active {
  background-color: #e0efff;
  color: var(--brand-green);
  border-bottom-color: var(--brand-green);
  font-weight: 600;
}

.top-navigation a:active {
  background-color: #e0efff;
}

@media (max-width: 64rem) {
  .top-navigation a {
    padding: 10px;
  }
}

@media (max-width: 37.5rem) {
  .hamburger-menu {
    display: flex;
    background-color: #ffffff;
    border-radius: 50%;
    padding: 10px;
  }

  .top-navigation {
    padding-bottom: 0;
  }

  .top-navigation .nav-menu {
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    width: 100%;
  }

  .top-navigation .nav-menu.menu-open {
    max-height: 500px;
    opacity: 1;
    transition: max-height 0.3s ease-in, opacity 0.3s ease-in;
    border-radius: var(--radius);
    overflow: hidden;
  }

  .top-navigation a {
    width: 100%;
    text-align: center;
    border-bottom: 1px solid #e0e0e0;
  }

  .top-navigation li:first-child a {
    border-radius: 0;
  }

  .top-navigation li:last-child a {
    border-bottom: none;
    border-radius: 0 0 var(--radius) var(--radius);
  }
}