.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: radial-gradient(circle at top, rgba(24, 24, 27, 0.96), rgba(9, 9, 11, 0.98));
  border-bottom: 1px solid rgba(39, 39, 42, 0.9);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  gap: 1.5rem;
}

.header-brand {
  display: flex;
  align-items: center;
}

.header-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.15rem 0;
}

.header-logo-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: radial-gradient(circle at 20% 0, rgba(212, 175, 55, 0.2), transparent 55%), linear-gradient(145deg, #020617, #111827);
  border: 1px solid rgba(212, 175, 55, 0.8);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.9);
}

.header-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.header-logo-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.header-logo-tagline {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.header-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  font-size: 0.9rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-neutral-100);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.45rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.1), rgba(212, 175, 55, 0.9));
  transition: width var(--transition-base);
}

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

.nav-cta .header-reserve-btn {
  padding-inline: 1.6rem;
  font-size: 0.78rem;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 999px;
  border: 1px solid rgba(63, 63, 70, 0.95);
  background: radial-gradient(circle at top, rgba(24, 24, 27, 0.9), #020617);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.9);
  gap: 0.3rem;
}

.nav-toggle-bar {
  width: 1.25rem;
  height: 1px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.6), rgba(212, 175, 55, 0.2));
  transition: transform var(--transition-fast), opacity var(--transition-fast), background var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

@media (max-width: 900px) {
  .header-inner {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .header-logo-name {
    font-size: 1.05rem;
  }

  .header-logo-tagline {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .header-nav {
    position: fixed;
    inset-inline: 0;
    top: 4.1rem;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility 0s linear var(--transition-base);
  }

  .header-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin: 0.75rem auto 1.25rem;
    padding: 1rem 1.5rem 1.3rem;
    max-width: 90%;
    border-radius: var(--radius-xl);
    background: radial-gradient(circle at top left, rgba(212, 175, 55, 0.08), transparent 55%), linear-gradient(145deg, #020617, #111827 70%);
    border: 1px solid rgba(39, 39, 42, 0.95);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.95);
  }

  .nav-cta {
    margin-top: 0.5rem;
    width: 100%;
  }

  .nav-cta .header-reserve-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .header-nav,
  .nav-toggle-bar {
    transition: none;
  }
}

/* checklist: hamburger X */
.nav-toggle {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.9);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

@media (max-width: 900px) {
  /* the nav is a flex row by default, which shrink-wraps the drawer panel */
  .header-nav {
    display: block;
    background: #020617;
    border-bottom: 1px solid rgba(39, 39, 42, 0.95);
    box-shadow: 0 26px 70px rgba(0, 0, 0, 0.85);
  }
  .nav-list {
    max-width: none;
    margin: 0.75rem 1rem 1.25rem;
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .nav-item {
    width: 100%;
  }
  .nav-list .nav-link {
    display: flex;
    align-items: center;
    min-height: 44px;
    width: 100%;
  }
}