:root {
  color-scheme: dark;
}

body {
  font-family: "Fellix Medium", sans-serif;
}

.nav-link {
  position: relative;
  color: rgba(224, 237, 255, 0.8);
  transition: color 200ms ease;
  letter-spacing: 0.3em;
  font-size: 0.75rem;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.75rem;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, rgba(58, 141, 255, 0), rgba(102, 180, 255, 0.9), rgba(58, 141, 255, 0));
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 200ms ease, transform 200ms ease;
}

.nav-link:hover,
.nav-link:focus,
.nav-link-active {
  color: #66b4ff;
}

.nav-link:hover::after,
.nav-link:focus::after,
.nav-link-active::after {
  opacity: 1;
  transform: translateY(0);
}

.glass-panel {
  background: linear-gradient(160deg, rgba(14, 36, 74, 0.9), rgba(18, 54, 111, 0.75));
  border: 1px solid rgba(102, 180, 255, 0.25);
  box-shadow: 0 24px 60px rgba(4, 16, 40, 0.35);
  border-radius: 1.5rem;
  color: #e0edff;
}