@font-face {
  font-family: 'Biko';
  src: url('./Biko_Regular.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

header {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #f3f4f6;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
}

.header-div {
  max-width: 80rem; /* max-w-7xl */
  margin-left: auto; /* mx-auto */
  margin-right: auto;
  padding-left: 2rem; /* px-8 */
  padding-right: 2rem;
  padding-top: 2.5rem; /* py-10 */
  padding-bottom: 2.5rem;
  display: flex; /* flex items-center justify-between */
  align-items: center;
  justify-content: space-between;
}

.brand-gradient-text {
  display: inline-block;
  background-image: linear-gradient(180deg, #D62839 0%, #E63946 50%, #F77F00 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

a.nav-link {
  display: inline-block;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: #1f2937;
  text-transform: uppercase;
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
  position: relative;
  text-decoration: none;
  transition: color 0.15s ease;
}

a.nav-link:hover {
  color: #000000;
}

a.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1.5px;
  background-color: #F77F00;
  transition: width 0.2s ease-in-out;
}

a.nav-link:hover::after,
a.nav-link.active::after {
  width: 100%;
}