.main-nav {
  position: relative;
}

.main-nav .navbar-brand {
  display: flex;
  height: 100%;
  align-items: center;
}

.main-nav .navbar-brand img {
  width: 100%;
  max-width: 200px;
  box-sizing: border-box;
  overflow: hidden;
}


/* top nav */
.main-nav .top-nav {
  background-color: var(--white);
  color: var(--university-blue);
  padding-top: 16px;
  padding-bottom: 16px;
}

.main-nav .top-nav-content {
  display: flex;
  align-items: center;
  justify-self: end;
  column-gap: 32px;
  height: 100%;
}

.main-nav .top-nav-link {
  color: var(--university-blue);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-xs);
}

.main-nav .top-nav-link:hover,
.main-nav .top-nav-link:focus-within {
  text-decoration: underline;
}

/* bottom nav */
.main-nav .bottom-nav {
  background-color: var(--university-blue);
  color: var(--white);
  padding: 0;
}

.main-nav .bottom-nav-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: start;
  flex-wrap: wrap;
  gap: 50px;
  width: 100%;
}

.main-nav .bottom-nav-link {
  position: relative;

  color: var(--white);
  text-decoration: none;

  font-weight: 700;
  text-transform: capitalize;
}

/* bottom nav dropdown */
.main-nav .bottom-nav .dropdown-menu {
  background-color: var(--white);
  min-width: 200px;
  border-radius: 0;
  border: 1px solid var(--light-gray);
  padding: 0;
  margin: 0;
}

.main-nav .bottom-nav .dropdown-menu li {
  border-bottom: 1px solid var(--university-gray);
}

.main-nav .bottom-nav .dropdown-menu li:last-of-type {
  border-bottom: none;
}

.main-nav .bottom-nav .dropdown-menu li a {
  padding: 12px 16px;
  transition: var(--transition-sm);
}

.main-nav .bottom-nav .dropdown-menu li a:hover,
.main-nav .bottom-nav .dropdown-menu li a:focus-within,
.main-nav .bottom-nav .dropdown-menu li a:focus-visible {
  background-color: var(--new-gray);
  color: var(--university-blue);
  outline: none;
}

.main-nav .bottom-nav .dropdown-toggle {
  display: flex;
  align-items: center;
  padding: 18px 30px 18px 12px;
  transition: var(--transition-sm);
}

.main-nav .bottom-nav .dropdown-toggle:hover,
.main-nav .bottom-nav .dropdown-toggle:focus-within,
.main-nav .bottom-nav .dropdown-toggle:focus-visible {
  background-color: var(--true-blue);
  outline: none;
}

.main-nav .bottom-nav .dropdown-toggle::before {
  font: var(--fa-font-solid);
  content: "\f078";
  position: absolute;
  right: 8px;
  font-size: 12px;
}

.main-nav .bottom-nav .dropdown-toggle.show::before {
  transform: rotate(180deg);
}

.main-nav .bottom-nav .dropdown-toggle::after {
  display: none;
}

/* mobile nav */
.main-nav .mobile-nav,
.main-nav .mobile-sub-nav-links {
  display: none;
}

@media (max-width: 1399.5px) {
  .main-nav .bottom-nav-content {
    justify-content: space-evenly;
  }
}

/* nav search */
.main-nav .nav-search-container {
  display: flex;
  align-items: center;
  position: relative;
}

.main-nav .search-toggle-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-weight: 700 !important;
}

.main-nav .search-toggle-btn .icon {
  margin-right: 8px;
}

.main-nav .nav-search-input {
  display: flex;
  align-items: center;
  width: 0;
  background-color: var(--white);
  border: 1px solid var(--dark-text);
  padding: 6px 10px;

  opacity: 0;
  overflow: hidden;
  transition: width 0.6s ease, opacity 0.6s ease;
}

.main-nav .nav-search-input.active {
  width: 250px;
  opacity: 1;
}

.main-nav .nav-search-input input[type="search"] {
  width: 100%;
  max-width: 250px;
  border: none;
  outline: none;
}

.main-nav .nav-search-input input::placeholder {
  color: var(--dark-text);
  opacity: 1;
}

.main-nav .nav-search-input button {
  background-color: transparent;
  border: none;
  cursor: pointer;
}

@media (max-width: 991.5px) {

  /* mobile nav */
  .main-nav .mobile-nav {
    display: block;
    width: 100%;
    background-color: var(--university-blue);
    padding: 12px 12px 12px 8px;
  }

  .main-nav .mobile-nav .navbar-brand img {
    max-width: 140px;
  }

  .main-nav .mobile-nav .navbar-toggler {
    color: var(--white);
    text-transform: uppercase;
    font-weight: 700;
    font-size: var(--text-sm);
    border: none;
    box-shadow: none;
    padding: 0;
  }

  .main-nav .mobile-sub-nav {
    background-color: var(--university-blue);
    color: var(--white);
    padding: 10px 14px;
  }

  .main-nav .mobile-sub-nav-links {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .main-nav .mobile-sub-nav-links a {
    color: var(--white);
    text-decoration: none;
  }


  /* top nav */
  .main-nav .top-nav {
    display: none;
  }

  /* bottom nav */
  .main-nav .bottom-nav {
    background-color: var(--white);
    padding: 0 0;
  }

  .main-nav .bottom-nav-content {
    display: block;
    padding: 20px 14px;
  }

  .main-nav .bottom-nav-link {
    display: block;
    color: var(--university-blue);
    font-size: 20px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  /* bottom nav dropdown */
  .main-nav .bottom-nav .dropdown-toggle:hover,
  .main-nav .bottom-nav .dropdown-toggle:focus-within {
    background-color: var(--light-gray);
  }

  .main-nav .bottom-nav .dropdown-menu.show {
    display: flex;
  }

  .main-nav .bottom-nav .dropdown-menu {
    flex-direction: column;
    row-gap: 8px;
    position: static;
    transform: unset;
    min-width: 100%;
    box-shadow: none;
    padding: 18px;
  }

  .main-nav .bottom-nav .dropdown-menu li {
    border-bottom: none;
  }

  .main-nav .bottom-nav .dropdown-menu li a {
    padding: 0 0;
  }

  .main-nav .bottom-nav .dropdown-menu li a:hover,
  .main-nav .bottom-nav .dropdown-menu li a:focus-within {
    background-color: transparent;
  }

  /* nav search */
  .main-nav .nav-search-input.active {
    width: 100%;
  }

  .main-nav .nav-search-input input[type="search"] {
    width: calc(100% - 40px);
    max-width: calc(100% - 40px);
  }

}