/* Sticky site header. Transparent while it sits over the hero, solid black with
   a red rule once the page scrolls (state class applied by site_header_controller). */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background-color: transparent;
  border-bottom: 2px solid transparent;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.site-header--solid {
  background-color: var(--zh-black);
  border-bottom-color: var(--zh-red);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: var(--zh-header-height);
}

.site-header__logo {
  display: block;
  flex: none;
}

.site-header__logo img {
  width: auto;
  height: 3.4rem;
}

/* Menu toggle — mobile only ---------------------------------------------- */

.site-header__toggle {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-left: auto;
  margin-right: -0.5rem;
  padding: 0;
  background: none;
  border: 0;
  color: inherit;
  cursor: pointer;
}

.site-header__bars,
.site-header__bars::before,
.site-header__bars::after {
  display: block;
  width: 1.5rem;
  height: 2px;
  background-color: var(--zh-white);
}

.site-header__bars::before,
.site-header__bars::after {
  content: "";
  position: relative;
}

.site-header__bars::before {
  top: -7px;
}

.site-header__bars::after {
  top: 5px;
}

/* Navigation ------------------------------------------------------------- */

.site-nav {
  display: none;
}

.site-header--open .site-nav {
  display: block;
  position: absolute;
  inset: 100% 0 auto;
  background-color: var(--zh-black);
  border-bottom: 2px solid var(--zh-red);
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 0;
  padding: 0.5rem var(--zh-shell-gutter) 0.75rem;
  list-style: none;
}

.site-nav__cta {
  margin: 0 var(--zh-shell-gutter) 1.5rem;
}

.site-nav__link {
  display: inline-block;
  padding: 0.6rem 0;
  border-bottom: 2px solid transparent;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  border-bottom-color: var(--zh-red);
}

@media (min-width: 60rem) {
  .site-header__logo img {
    height: 3.2rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-nav,
  .site-header--open .site-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    position: static;
    margin-left: auto;
    border-bottom: 0;
  }

  .site-nav__list {
    flex-direction: row;
    gap: 2.25rem;
    padding: 0;
  }

  .site-nav__link {
    font-size: 1.0625rem;
  }

  .site-nav__cta {
    margin: 0;
  }
}