.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(to bottom, rgba(7, 7, 8, 0.98), rgba(7, 7, 8, 0.92));
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-4);
}

.site-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: inherit;
}

.site-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, #ffffff 0, rgba(255, 255, 255, 0.1) 16%, transparent 60%),
    radial-gradient(circle at 70% 80%, rgba(242, 194, 107, 0.9), rgba(243, 173, 57, 0.1) 55%, transparent 70%),
    linear-gradient(145deg, #181922, #070708);
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
}

.site-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

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

.site-header__brand-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav-link {
  font-size: var(--font-size-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  position: relative;
  padding-block: 0.25rem;
  font-size: 12px;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.35rem;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transform-origin: center;
  transform: scaleX(0);
  transition: transform var(--duration-normal) var(--ease-soft);
}

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

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

.site-header__nav-link--button {
  padding-inline: 1.25rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(242, 194, 107, 0.3);
  background: radial-gradient(circle at top left, rgba(242, 194, 107, 0.3), transparent 55%),
    rgba(24, 25, 34, 0.96);
  box-shadow: var(--shadow-xs);
  color: white;
}

.site-header__nav-link--button::after {
  display: none;
}

.site-header__nav-link--button:hover,
.site-header__nav-link--button:focus-visible {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #120f0a;
}

.site-header__nav-item--cta {
  margin-left: var(--space-2);
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-text-soft);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background-color: rgba(7, 7, 8, 0.94);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.site-header__toggle-icon {
  position: relative;
  width: 18px;
  height: 14px;
}

.site-header__toggle-icon span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--duration-normal) var(--ease-soft),
    opacity var(--duration-fast) var(--ease-soft),
    top var(--duration-normal) var(--ease-soft),
    bottom var(--duration-normal) var(--ease-soft);
}

.site-header__toggle-icon span:first-child {
  top: 2px;
}

.site-header__toggle-icon span:last-child {
  bottom: 2px;
}

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

/* Open state */
.site-header--nav-open .site-header__toggle-icon span:first-child {
  top: 6px;
  transform: rotate(42deg);
}

.site-header--nav-open .site-header__toggle-icon span:last-child {
  bottom: 6px;
  transform: rotate(-42deg);
}

.site-header--nav-open .site-header__toggle-label::after {
  content: "";
}

/* Responsive */
@media (max-width: 960px) {
  .site-header__inner {
    padding-block: var(--space-2);
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top, rgba(242, 194, 107, 0.12), transparent 55%),
      rgba(7, 7, 8, 0.97);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-soft),
      transform var(--duration-normal) var(--ease-soft),
      visibility 0s linear var(--duration-normal);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--container-padding-x) var(--space-5);
    gap: var(--space-3);
  }

  .site-header__nav-item--cta {
    margin-left: 0;
    width: 100%;
  }

  .site-header__nav-link--button {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .site-header--nav-open .site-header__nav {
    opacity: 1;
    transform: scaleY(1);
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
    padding: 20px;
  }
}

@media (max-width: 600px) {
  .site-header__brand-subtitle {
    display: none;
  }
}