.site-header {
  position: relative;
  z-index: 100;
  border-bottom: 3px solid var(--color-electric-blue);
  background: var(--color-arcade-charcoal);
  box-shadow: 0 4px 0 var(--color-cabinet-black);
}

.site-header__inner {
  display: flex;
  align-items: center;
  min-height: 4.75rem;
  gap: var(--space-3);
  padding-block: var(--space-2);
}

.site-header__brand {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: center;
  min-width: 0;
  gap: var(--space-2);
  color: var(--color-warm-cream);
  text-decoration: none;
}

.site-header__brand:hover { color: var(--color-star-white); }

.site-header__logo {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  object-fit: contain;
}

.site-header__brand-text {
  min-width: 0;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  line-height: 1.25;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__brand-compact { display: none; }

.site-header__nav {
  min-width: 0;
  margin-left: auto;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1vw, 0.8rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header__nav-item,
.site-header__nav-item + .site-header__nav-item {
  display: flex;
  align-items: center;
  margin: 0;
  padding: 0;
}

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.5rem 0.25rem;
  border-bottom: 3px solid transparent;
  color: var(--color-cream-muted);
  font-family: var(--font-heading);
  font-size: 0.625rem;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible { border-bottom-color: var(--color-electric-blue); }

.site-header__nav-link[aria-current="page"] {
  border-bottom-color: var(--color-phosphor-green);
  color: var(--color-star-white);
}

.site-header__cta {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.6rem 0.7rem;
  border: 2px solid var(--color-cabinet-black);
  background: var(--color-arcade-red);
  color: var(--color-warm-cream);
  font-family: var(--font-heading);
  font-size: 0.56rem;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  box-shadow: var(--shadow-hard-small);
  white-space: nowrap;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header__cta:hover { background: #f05245; color: var(--color-star-white); }
.site-header__cta:active { transform: translateY(2px); box-shadow: none; }

.site-header__toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  flex: 0 0 3rem;
  padding: 0.55rem;
  border: 2px solid var(--color-electric-blue);
  border-radius: 0;
  background: var(--color-cabinet-black);
  box-shadow: none;
}

.site-header__toggle:hover { background: var(--color-cabinet-black); }

.site-header__toggle-line {
  display: block;
  width: 100%;
  height: 3px;
  margin: 3px 0;
  background: var(--color-warm-cream);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1050px) {
  .site-header__inner { min-height: 4.25rem; }
  .site-header__logo { width: 38px; height: 38px; flex-basis: 38px; }
  .site-header__brand-text { font-size: 0.75rem; }
  .site-header__nav-link { font-size: 0.54rem; }
  .site-header__cta { font-size: 0.5rem; }
}

@media (max-width: 900px) {
  .site-header__inner { position: relative; min-height: 4.5rem; justify-content: space-between; }
  .site-header__brand { margin-right: auto; }
  .site-header__brand-full { display: none; }
  .site-header__brand-compact { display: inline; }
  .site-header__toggle { display: block; }
  .site-header__nav {
    position: absolute;
    top: calc(100% + 3px);
    right: 0;
    left: 0;
    display: none;
    max-height: min(70vh, 34rem);
    overflow-y: auto;
    border: 2px solid var(--color-electric-blue);
    border-top: 0;
    background: var(--color-cabinet-black);
    box-shadow: 4px 4px 0 var(--color-cabinet-black);
  }
  .site-header__nav.is-open { display: block; }
  .site-header__nav-list { display: grid; gap: 0; padding: var(--space-2); }
  .site-header__nav-item { display: block; }
  .site-header__nav-link { display: flex; justify-content: flex-start; min-height: 3rem; padding-inline: var(--space-3); border-bottom: 1px solid rgb(40 124 255 / 42%); font-size: 0.68rem; text-align: left; }
  .site-header__nav-link[aria-current="page"] { border-left: 3px solid var(--color-phosphor-green); }
}

@media (max-width: 520px) {
  .site-header__inner { gap: var(--space-2); }
  .site-header__logo { width: 36px; height: 36px; flex-basis: 36px; }
  .site-header__brand-text { font-size: 0.67rem; }
  .site-header__cta { display: none; }
}