.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.site-logo-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.85rem;
  background: radial-gradient(circle at 30% 0, rgba(201, 122, 50, 0.55), rgba(5, 6, 8, 0.96));
  border: 1px solid rgba(201, 122, 50, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.8);
}

.site-logo-symbol {
  font-size: 1.15rem;
  color: var(--color-text);
}

.site-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

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

.site-logo-subtitle {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.19em;
  color: var(--color-text-muted);
}

/* Navigation */
.primary-nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-item {
  list-style: none;
}

.nav-link {
  position: relative;
  padding: 0.2rem 0;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(201, 122, 50, 0.2), rgba(201, 122, 50, 1));
  transition: width var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 100%;
}

/* CTA button */
.header-cta .btn-small {
  padding: 0.55rem 1.2rem;
  font-size: var(--font-size-xs);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: rgba(5, 6, 8, 0.9);
  color: var(--color-text);
}

.nav-toggle-bar {
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(201, 122, 50, 0.3), rgba(201, 122, 50, 0.9));
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

/* Responsive layout */
.hide-on-mobile {
  display: none;
}

.hide-on-tablet {
  display: none;
}

@media (max-width: 959px) {
  .primary-nav {
    position: fixed;
    inset-inline: 0;
    top: var(--nav-height);
    background: radial-gradient(circle at top, #15141b 0, #050608 60%);
    border-top: 1px solid var(--color-border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-fast);
  }

  .primary-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    padding: 20px;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-6);
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 0.6rem 0;
    font-size: var(--font-size-sm);
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
  }

  .hide-on-mobile {
    display: none !important;
  }
}

@media (min-width: 960px) and (max-width: 1199px) {
  .hide-on-tablet {
    display: none !important;
  }

  .hide-on-mobile {
    display: inline-flex;
  }
}

@media (min-width: 1200px) {
  .hide-on-mobile {
    display: inline-flex;
  }

  .hide-on-tablet {
    display: inline-flex;
  }

  .primary-nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    background: transparent;
    border-top: none;
  }
}

/* Fallback when JS disabled: show nav */
.no-js .primary-nav {
  position: static;
  transform: none;
  opacity: 1;
  visibility: visible;
}

.no-js .nav-toggle {
  display: none;
}