.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.94), rgba(5, 6, 10, 0.85));
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

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

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

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-neutral-50);
}

.site-header__logo::after {
  display: none;
}

.site-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background:
    conic-gradient(from 210deg, rgba(201, 155, 75, 0.9), rgba(148, 163, 184, 0.4), rgba(15, 23, 42, 0.9));
  box-shadow:
    0 0 0 1px rgba(15, 23, 42, 0.9),
    0 0 18px rgba(201, 155, 75, 0.65);
  position: relative;
  overflow: hidden;
}

.site-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 0, rgba(248, 250, 252, 0.45), transparent 60%);
  mix-blend-mode: screen;
}

.site-header__logo-text {
  white-space: nowrap;
}

/* Navigation */

.site-header__nav {
  margin-left: auto;
}

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

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.35rem 0;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(201, 155, 75, 0.9), transparent);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform var(--transition-medium);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-neutral-50);
}

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

.site-header__nav-link--cta {
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.12), transparent 55%),
    rgba(201, 155, 75, 0.95);
  color: #05060a;
  border: 1px solid rgba(15, 23, 42, 0.9);
  box-shadow: var(--shadow-sm);
}

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

.site-header__nav-link--cta:hover,
.site-header__nav-link--cta:focus-visible {
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.14), transparent 55%),
    var(--color-primary-strong);
}

/* Toggle button */

.site-header__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.7), rgba(2, 6, 23, 0.98));
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
  color: var(--color-text);
}

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

.site-header__toggle-bar {
  width: 1.3rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-neutral-100);
  transition:
    transform var(--transition-medium),
    opacity var(--transition-medium),
    translate var(--transition-medium);
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(1) {
  transform: rotate(42deg);
  translate: 0 4px;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header__toggle--open .site-header__toggle-bar:nth-child(3) {
  transform: rotate(-42deg);
  translate: 0 -7px;
}

/* Mobile / tablet styles */

@media (max-width: 768px) {
  .site-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    inset: 3.25rem 0 auto 0;
    z-index: 30;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.96), #020617 75%);
    border-bottom: 1px solid rgba(148, 163, 184, 0.4);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity var(--transition-medium),
      transform var(--transition-medium);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--container-padding-x) var(--space-4);
    gap: var(--space-2);
  }

  .site-header__nav-link,
  .site-header__nav-link--cta {
    width: 100%;
  }

  .site-header__nav-link--cta {
    text-align: center;
    margin-top: var(--space-2);
  }

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

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .site-header * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}