/* Header layout */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 7, 13, 0.95), rgba(5, 7, 13, 0.8));
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-8);
  gap: var(--space-8);
}

/* Brand */
.site-header__brand {
  display: flex;
  align-items: center;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  color: var(--color-heading);
}

.site-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.7), transparent 55%),
    radial-gradient(circle at 70% 80%, rgba(194, 60, 60, 0.8), transparent 55%),
    linear-gradient(135deg, var(--color-primary) 0%, #8b5a18 100%);
  box-shadow: var(--shadow-gold-glow);
  position: relative;
}

.site-header__logo-mark::before,
.site-header__logo-mark::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(5, 7, 13, 0.9);
}

.site-header__logo-mark::before {
  inset: 6px;
}

.site-header__logo-mark::after {
  inset: 11px;
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
}

.site-header__logo-main {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
}

.site-header__logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Nav */
.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: center;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-heading);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.site-header__nav-item--cta {
  margin-left: var(--space-4);
}

.site-header__nav-link--cta {
  padding-inline: 1.1rem;
  padding-block: 0.4rem;
  font-size: var(--font-size-xs);
}

/* Mobile toggle */
.site-header__nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text);
}

.site-header__nav-toggle-box {
  width: 20px;
  height: 16px;
  position: relative;
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
}

.site-header__nav-toggle-bar {
  height: 2px;
  width: 100%;
  border-radius: var(--radius-pill);
  background-color: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-normal), background-color var(--transition-normal);
}

.site-header__nav-toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

/* Mobile layout */
@media (max-width: 768px) {
  .site-header__inner {
    padding-block: var(--space-6);
  }

  .site-header__nav-toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 56px;
    background: radial-gradient(circle at top, rgba(21, 26, 36, 0.99), rgba(5, 7, 13, 0.99));
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-10) var(--space-8) var(--space-12);
    gap: var(--space-6);
  }

  .site-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
    margin-top: var(--space-4);
  }

  .site-header__nav-link--cta {
    width: 100%;
    justify-content: center;
  }

  .site-header--menu-open .site-header__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-header--menu-open .site-header__nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header--menu-open .site-header__nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .site-header--menu-open .site-header__nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .site-header__nav,
  .site-header__nav-toggle-bar,
  .site-header__nav-link::after {
    transition: none;
  }
}