/* ==========================================================================
   NAVIGATION & MOBILE BAR
   ========================================================================== */
.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 0.2rem + 1.7vw, 2.25rem);
}
.nav__link,
.nav__list a {
  position: relative;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream);
  transition: color var(--t-fast);
}
.nav__link::after,
.nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-mid);
}
.nav__link:hover, .nav__list a:hover { color: var(--color-gold); }
.nav__link:hover::after, .nav__list a:hover::after { transform: scaleX(1); }
.nav__link.is-current, .nav__list .current-menu-item > a { color: var(--color-gold); }
.nav__link.is-current::after, .nav__list .current-menu-item > a::after { transform: scaleX(1); }

.nav__foot { display: none; }

.burger {
  position: relative;
  z-index: calc(var(--z-nav) + 20);
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(8, 13, 21, 0.4);
  border: 1px solid rgba(242, 236, 227, 0.28);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--t-fast);
}
.burger:hover,
.burger:focus-visible {
  border-color: var(--color-gold);
  outline: none;
}
.burger[aria-expanded="true"] {
  border-color: var(--color-gold);
  background: rgba(8, 13, 21, 0.85);
}
.burger__bar {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 3.5px auto;
  background: var(--color-cream);
  transition: transform var(--t-mid), opacity var(--t-mid), background-color var(--t-fast);
  transform-origin: center;
}
.burger[aria-expanded="true"] .burger__bar {
  background: var(--color-gold);
}
.nav.is-open ~ .header__actions .burger .burger__bar:first-child,
.burger[aria-expanded="true"] .burger__bar:first-child {
  transform: translateY(2.5px) rotate(45deg);
}
.nav.is-open ~ .header__actions .burger .burger__bar:last-child,
.burger[aria-expanded="true"] .burger__bar:last-child {
  transform: translateY(-2.5px) rotate(-45deg);
}

/* Mobile Sticky Bar */
.mobilebar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  display: none;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-2xs) var(--space-sm)
           calc(var(--space-2xs) + env(safe-area-inset-bottom));
  background: rgba(8, 13, 21, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-navy-line);
  transform: translateY(110%);
  transition: transform var(--t-mid);
}
.mobilebar.is-visible { transform: translateY(0); }
.mobilebar__secondary {
  flex: none;
  padding: 0.7rem 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cream);
  border: 1px solid var(--color-navy-line);
  border-radius: var(--radius-pill);
}

/* Off-canvas Navigation below desktop */
@media (max-width: 61.99em) {
  .burger { display: block; }
  .header__book { display: none; }

  .header.is-menu-open .logo,
  .header:has(.nav.is-open) .logo {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .nav {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    z-index: var(--z-nav);
    display: flex;
    flex-direction: column;
    padding: calc(var(--space-xl) + env(safe-area-inset-top, 0px)) var(--gutter) calc(var(--space-2xl) + env(safe-area-inset-bottom, 0px));
    background: var(--color-navy-deep);
    transform: translateY(-100%);
    visibility: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transition: transform 480ms var(--ease), visibility 480ms;
  }
  .nav.is-open { transform: translateY(0); visibility: visible; }

  .nav__list {
    margin-top: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }
  .nav__link, .nav__list a {
    font-size: clamp(1.6rem, 1.1rem + 2.8vw, 2.5rem);
    letter-spacing: 0.02em;
    text-transform: none;
  }
  .nav__link::after, .nav__list a::after { display: none; }

  .nav__foot {
    display: block;
    margin-top: var(--space-xl);
    margin-bottom: auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-navy-line);
  }
  .nav__meta {
    margin-top: var(--space-md);
    font-size: var(--fs-small);
    color: var(--color-muted);
  }

  .mobilebar { display: flex; }
}