.site-header {
  z-index: 3;
  top: 0;
  padding:
    max(8px, env(safe-area-inset-top))
    max(16px, env(safe-area-inset-right))
    8px
    max(16px, env(safe-area-inset-left));
  border-bottom: 1px solid oklch(0.98 0.004 265 / 16%);
  background: oklch(0.08 0.006 265 / 58%);
  box-shadow: 0 18px 60px oklch(0.03 0.006 265 / 28%);
  backdrop-filter: blur(18px);
  color: oklch(0.98 0.004 265);
  font-family: "Real VHS", "OCR A Std", "OCR A Extended", monospace;
}

.site-nav {
  width: min(100%, 1120px);
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto;
  padding: 0 10px 0 18px;
}

.site-logo,
.site-link {
  color: inherit;
  text-decoration: none;
  text-transform: uppercase;
}

.site-logo {
  min-width: 0;
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-link {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 0 14px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: clamp(1.22rem, 1.65vw, 1.38rem);
  letter-spacing: -0.02em;
  transition:
    background-color 180ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 180ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

.site-link:hover,
.site-link:focus-visible {
  border-color: oklch(0.98 0.004 265 / 16%);
  background: oklch(0.98 0.004 265 / 10%);
  outline: none;
  transform: translateY(-1px);
}

.menu-toggle,
.mobile-menu,
.site-actions,
.site-action {
  display: none;
}

@media (max-width: 540px) {
  .site-nav {
    height: 54px;
    min-height: 54px;
    align-items: center;
    flex-direction: row;
    gap: 18px;
    padding: 0 10px 0 18px;
  }

  .site-links {
    display: none;
  }

  .menu-toggle {
    width: 38px;
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 7px;
    padding: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
  }

  .menu-icon {
    width: 20px;
    display: grid;
    gap: 4px;
  }

  .menu-icon span {
    width: 100%;
    height: 1.5px;
    display: block;
    border-radius: 1px;
    background: currentColor;
    transform-origin: center;
    transition:
      opacity 180ms cubic-bezier(0.16, 1, 0.3, 1),
      transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
  }

  body.mobile-menu-open .menu-icon span:first-child {
    transform: translateY(5.5px) rotate(45deg);
  }

  body.mobile-menu-open .menu-icon span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0.4);
  }

  body.mobile-menu-open .menu-icon span:last-child {
    transform: translateY(-5.5px) rotate(-45deg);
  }

  .menu-toggle:hover,
  .menu-toggle:focus-visible {
    border-color: oklch(0.98 0.004 265 / 16%);
    background: oklch(0.98 0.004 265 / 10%);
    outline: none;
  }

  .mobile-menu {
    position: absolute;
    z-index: 4;
    top: calc(100% + 8px);
    right: max(16px, env(safe-area-inset-right));
    left: max(16px, env(safe-area-inset-left));
    display: grid;
    gap: 8px;
    border: 1px solid oklch(0.98 0.004 265 / 16%);
    border-radius: 7px;
    padding: 12px;
    background: oklch(0.08 0.006 265 / 92%);
    box-shadow: 0 22px 70px oklch(0.03 0.006 265 / 45%);
    backdrop-filter: blur(22px);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px) scale(0.98);
    transition:
      opacity 260ms cubic-bezier(0.16, 1, 0.3, 1),
      transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
  }

  body.mobile-menu-open .mobile-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
  }

  .mobile-menu .site-link {
    width: 100%;
    min-height: 34px;
    justify-content: flex-start;
    padding: 0 10px;
    font-size: 0.9rem;
  }
}