:root {
  --background: #ffffff;
}

.nav-toggle {
  display: none;
}

/* Remove the current overline style */
.nav__link[aria-current='page'] {
  text-decoration: none;
  position: relative;
}

/* Persistent overline for active pages */
.nav__link[aria-current='page']::before {
  content: '';
  display: block;
  height: 5px;
  background: #c08c2b;
  position: absolute;
  top: -.75em;
  left: 0;
  right: 0;
  transform: scale(1, 1);
}

/* Hover animation for non-active links */
nav a:not(.nav__link--special):not([aria-current='page'])::before {
  content: '';
  display: block;
  height: 5px;
  background: rgb(225, 150, 37);
  position: absolute;
  top: -.75em;
  left: 0;
  right: 0;
  transform: scale(0, 1);
  transition: transform ease-in-out 250ms;
}

nav a:not(.nav__link--special):not([aria-current='page']):hover::before {
  transform: scale(1, 1);
}

nav {
  position: absolute;
  text-align: center;
  top: 100%;
  left: 0;
  background: var(--background);
  width: 100%;
  height: auto;
  transform: scale(1, 0);
  transform-origin: top;
  transition: transform 400ms ease-in-out;
  padding: 20px 40px;
}

/* Global stacking order */
div:has(> .nav-toggle) {
  position: relative;
  z-index: 1000;
}

nav ul {
  margin-top: 2rem;
  list-style: none;
}

nav li {
  margin-bottom: 1em;
}

nav a {
  color: rgb(0, 0, 0);
  text-decoration: none;
  font-size: 1rem;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 150ms ease-in-out;
}

nav a:hover {
  color: #000;
}

.nav-toggle:checked ~ nav {
  transform: scale(1, 1);
}

.nav-toggle:checked ~ nav a {
  opacity: 1;
  transition: opacity 250ms ease-in-out 250ms;
}

/* Special button-like link */
.nav__link--special {
  color: azure;
  background: #0056b3;
  text-transform: uppercase;
  font-size: 17px;
  padding: 20px 40px;
  border-radius: 10px;
  display: inline-block;
  text-align: center;
  margin: 0.5rem auto;
}

a:is(:link, :active, :visited).active {
  color: #c08c2b;
  background-color: greenyellow;
}

/* Mobile tweaks */
@media screen and (max-width: 800px) {
  .nav__link--special {
    font-size: 14px !important;
    padding: 15px 25px !important;
    margin: 0.5rem 1rem !important;
    width: calc(90% - 2rem);
  }
}

/* Desktop layout */
@media screen and (min-width: 800px) {
  header {
    display: grid;
    max-height: fit-content;
  }

  .logo {
    grid-column: 1 / 3;
  }

  nav {
    all: unset;
    grid-column: 3 / 4;
    margin-top: 30px;
  }

  nav ul {
    width: 100%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-right: 2rem;
  }

  nav li {
    margin-left: 3em;
    margin-bottom: 0;
  }

  nav a {
    opacity: 1;
    position: relative;
  }

  nav a:not(.nav__link--special)::before {
    content: '';
    display: block;
    height: 5px;
    background: rgb(225, 150, 37);
    position: absolute;
    top: -.75em;
    left: 0;
    right: 0;
    transform: scale(0, 1);
    transition: transform ease-in-out 250ms;
  }

  nav a:not(.nav__link--special):hover::before {
    transform: scale(1, 1);
  }

  i {
    grid-column: 4/4;
  }

  .nav__link--special:hover {
    background: #003d7a;
    transition: background-color 250ms ease-in-out;
  }
}

/* Hamburger button for mobile */
.nav-toggle-label {
  display: block;
  cursor: pointer;
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 30px;
  height: 25px;
  z-index: 1001;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  display: block;
  background: black;
  height: 3px;
  width: 100%;
  border-radius: 2px;
  position: absolute;
  transition: all 0.3s ease;
}

.nav-toggle-label span {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle-label span::before {
  content: '';
  top: -8px;
}

.nav-toggle-label span::after {
  content: '';
  top: 8px;
}

/* Animate to X when open */
.nav-toggle:checked ~ .nav-toggle-label span {
  background: transparent;
}

.nav-toggle:checked ~ .nav-toggle-label span::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle:checked ~ .nav-toggle-label span::after {
  transform: rotate(-45deg);
  top: 0;
}

/* Desktop override: hide hamburger, keep menu open */
@media (min-width: 800px) {
  .nav-toggle-label {
    display: none;
  }
  .nav-toggle {
    display: none;
  }
  nav {
    transform: none;
    position: static;
    opacity: 1;
    height: auto;
    padding: 0;
  }
  nav a {
    opacity: 1;
  }
}