/* Header-specific styles (builds on base.css) */

.site-header {
  position: sticky;
  top: var(--age-notice-height-mobile);
  z-index: 1500;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

@media (min-width: 768px) {
  .site-header {
    top: var(--age-notice-height-desktop);
  }
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

/* Brand */
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.site-logo::after {
  content: none;
}

.site-logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(201, 163, 79, 0.7);
  font-size: 0.8rem;
  font-weight: 600;
  background: radial-gradient(circle at 0 0, rgba(201, 163, 79, 0.3), transparent 60%), #ffffff;
}

.site-logo__text {
  font-weight: 500;
}

/* Navigation */
.site-nav {
  position: relative;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.site-nav__item {
  list-style: none;
}

.site-nav__link {
  position: relative;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-700);
  padding-bottom: 0.35rem;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.site-nav__link::after {
  bottom: -1px;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--color-primary);
}

.site-nav__link--active {
  color: var(--color-primary);
  border-color: var(--color-accent-gold);
}

/* Mobile menu toggle */
.site-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-300);
  background-color: #ffffff;
  color: var(--gray-800);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav-toggle__label {
  display: inline-block;
}

.site-nav-toggle__icon {
  position: relative;
  width: 16px;
  height: 12px;
}

.site-nav-toggle__icon::before,
.site-nav-toggle__icon::after,
.site-nav-toggle__icon span {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.site-nav-toggle__icon::before {
  top: 0;
}

.site-nav-toggle__icon::after {
  bottom: 0;
}

.site-nav-toggle__icon span {
  top: 50%;
  transform: translateY(-50%);
}

/* Open state transformation */
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__icon::before {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__icon::after {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__icon span {
  opacity: 0;
}

/* Layout behavior */
@media (max-width: 991.98px) {
  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid rgba(148, 163, 184, 0.3);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .site-nav--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scaleY(1);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem var(--layout-gutter) 1rem;
    gap: 0.6rem;
  }

  .site-nav__link {
    padding-top: 0.35rem;
    padding-bottom: 0.35rem;
  }
}

@media (min-width: 992px) {
  .site-nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
  }
}

/* Age notice bar override to ensure placement above header */
.age-notice-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2000;
}

.age-notice-bar__inner {
  max-width: var(--layout-max-width);
  margin: 0 auto;
}