/* ==========================================================================
   NotAuth.Master's chrome: the page background behind the body, the public
   nav (sk-frontend's HomeNav) and the footer. Every logged-out page links it.
   The burger is driven by js/public-nav.js, which only toggles classes.
   ========================================================================== */

html {
  background: var(--sk-surface-page);
}

/* ---- Nav ---------------------------------------------------------------- */

.sk-public-nav {
  position: relative;
  z-index: 1030; /* over the page's own content, under Bootstrap's modals */
  box-sizing: border-box;
  width: 100%;
  max-width: calc(1000px + 2 * var(--sk-gutter));
  margin: var(--sk-space-2) auto var(--sk-stack);
  padding: 0 var(--sk-gutter);
  font-family: var(--sk-font);
}

.sk-public-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sk-space-4);
  height: 64px;
  padding: 0 var(--sk-space-5);
  background: var(--sk-surface-overlay);
  backdrop-filter: var(--sk-blur);
  -webkit-backdrop-filter: var(--sk-blur);
  border: 1px solid var(--sk-border-subtle);
  border-radius: var(--sk-radius-lg);
  box-shadow: var(--sk-shadow-lg);
}

.sk-public-nav-links {
  display: none;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* The logo sits between the two lists, so each list takes an equal share of
   what is left and the logo stays centred whatever the labels' widths. */
.sk-public-nav-links--left {
  justify-content: flex-start;
}

.sk-public-nav-links--right {
  justify-content: flex-end;
}

a.sk-public-nav-link {
  position: relative;
  display: inline-block;
  padding: var(--sk-space-2) 0;
  color: var(--sk-text-muted);
  font-size: var(--sk-text-xs);
  font-weight: var(--sk-weight-bold);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--sk-transition-slow);
}

/* The underline that grows from the left on hover. */
a.sk-public-nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--sk-transition-slow);
}

a.sk-public-nav-link:hover,
a.sk-public-nav-link:focus-visible {
  color: var(--sk-accent-hover);
  text-decoration: none;
}

.sk-public-nav-links--right a.sk-public-nav-link:hover,
.sk-public-nav-links--right a.sk-public-nav-link:focus-visible {
  color: var(--sk-ion);
}

a.sk-public-nav-link:hover::after,
a.sk-public-nav-link:focus-visible::after {
  width: 100%;
}

.sk-public-nav-logo {
  display: flex;
  flex-shrink: 0;
}

.sk-public-nav-logo img {
  display: block;
  width: auto;
  height: 48px;
  filter: drop-shadow(0 0 15px var(--sk-wash-accent-strong));
}

.sk-public-nav-burger .sk-public-nav-burger-close,
.sk-public-nav.is-open .sk-public-nav-burger-open {
  display: none;
}

.sk-public-nav.is-open .sk-public-nav-burger-close {
  display: inline-block;
}

/* The phone dropdown: all six links, under the bar. */
.sk-public-nav-menu {
  position: absolute;
  top: calc(100% + var(--sk-space-2));
  right: var(--sk-gutter);
  left: var(--sk-gutter);
  padding: var(--sk-space-3);
  background: var(--sk-surface-on-image);
  backdrop-filter: var(--sk-blur);
  -webkit-backdrop-filter: var(--sk-blur);
  border: 1px solid var(--sk-border-subtle);
  border-radius: var(--sk-radius-lg);
  box-shadow: var(--sk-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity var(--sk-transition-slow),
    transform var(--sk-transition-slow),
    visibility 0s linear var(--sk-transition-slow);
}

.sk-public-nav.is-open .sk-public-nav-menu {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition:
    opacity var(--sk-transition-slow),
    transform var(--sk-transition-slow);
}

.sk-public-nav-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--sk-space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Capitalized on a phone, never upper-case (house rule). */
.sk-public-nav-menu a.sk-public-nav-link {
  display: block;
  padding: var(--sk-space-3) var(--sk-space-4);
  border-radius: var(--sk-radius);
  font-size: var(--sk-text-base);
  letter-spacing: 0.05em;
  text-transform: none;
}

.sk-public-nav-menu a.sk-public-nav-link::after {
  display: none;
}

.sk-public-nav-menu a.sk-public-nav-link:hover,
.sk-public-nav-menu a.sk-public-nav-link:focus-visible {
  background: var(--sk-wash-accent);
}

@media (min-width: 768.02px) {
  .sk-public-nav {
    margin-top: var(--sk-space-4);
  }

  .sk-public-nav-bar {
    height: 80px;
    padding: 0 var(--sk-space-7);
  }

  .sk-public-nav-links {
    display: flex;
    flex: 1 1 0;
    align-items: center;
    gap: var(--sk-space-6);
  }

  .sk-public-nav-logo img {
    height: 64px;
  }

  .sk-public-nav-burger,
  .sk-public-nav-menu {
    display: none;
  }
}

@media (min-width: 1024px) {
  .sk-public-nav-links {
    gap: var(--sk-space-7);
  }
}

/* Between the phone and a full desktop the six labels and their tracking
   only just fit beside the logo; tighten the padding before they would wrap. */
@media (min-width: 768.02px) and (max-width: 1023.98px) {
  .sk-public-nav-bar {
    padding: 0 var(--sk-space-6);
  }

  a.sk-public-nav-link {
    letter-spacing: 0.15em;
  }
}

/* ---- Footer ------------------------------------------------------------- */

footer.sk-public-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--sk-space-2) var(--sk-space-5);
  margin-top: var(--sk-stack);
  padding: var(--sk-space-4) var(--sk-gutter);
  background: var(--sk-surface-overlay);
  border-top: 1px solid var(--sk-border-subtle);
  color: var(--sk-text-muted);
  font-family: var(--sk-font);
  font-size: var(--sk-text-xs);
}

.sk-public-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--sk-space-2) var(--sk-space-5);
  margin: 0;
  padding: 0;
  list-style: none;
}

a.sk-public-footer-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sk-space-2);
  color: var(--sk-link);
  text-decoration: none;
}

a.sk-public-footer-link:hover,
a.sk-public-footer-link:focus-visible {
  color: var(--sk-link-hover);
  text-decoration: underline;
}

@media (prefers-reduced-motion: reduce) {
  a.sk-public-nav-link,
  a.sk-public-nav-link::after,
  .sk-public-nav-menu,
  .sk-public-nav.is-open .sk-public-nav-menu {
    transition: none;
  }
}