header.site-header{
  background-color: #dcf5fb;
  display: flex;
  align-items: center;
  padding: 0.5rem 0;
}

/* Login button box styling */
.header-logo {
  height: 4rem;
  margin-left: 2rem;
  margin-right: 0;
}
.header-nav {
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  align-items: center;
  width: 66vw;
  height: 100%;
  margin-left: auto;
}
.header-link {
  color: #000;
  text-decoration: none;
  font-size: 1.8rem;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 400;
  padding: 0 1.5rem;
  transition: color 0.2s;
}
@media (max-width: 1300px) {
  .header-link {
    font-size: 1.1rem;
    padding: 0 1rem;
  }
}
.header-login-button {
  background: #f0f1f5;
  box-shadow: -3px -3px 0 #d3d3d3;
  border-top: none;
  border-left: none;
  padding: 0.5em 1em;
  font-weight: 600;
  transition: box-shadow 0.2s;
}
.header-link:hover {
  color: #0077a3;
}
.hamburger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  margin-right: 2rem;
  z-index: 1100;
}
.hamburger-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 2rem;
  height: 2rem;
}
.hamburger-icon span {
  display: block;
  width: 2rem;
  height: 0.25rem;
  background: #333;
  margin: 0.25rem 0;
  border-radius: 2px;
}
.mobile-menu {
  position: fixed;
  top: 5rem;
  left: 0;
  width: 100vw;
  background: #dcf5fb;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  display: none;
  flex-direction: column;
  align-items: stretch;
  z-index: 1200;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu-link {
  padding: 1.5rem 2rem;
  font-size: 1.2rem;
  color: #000;
  text-decoration: none;
  border-bottom: 1px solid #e0e0e0;
  font-family: 'Montserrat', Arial, sans-serif;
  font-weight: 500;
}
.mobile-menu-link:last-child {
  border-bottom: none;
}
@media (max-width: 900px) {
  .header-nav {
    display: none;
  }
  .hamburger-menu {
    display: block;
  }
}