/* Header-specific styles building on base.css */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  height: 72px;
}

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

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

.site-logo-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-logo-subtitle {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
}

/* Navigation layout */
.site-nav {
  margin-left: auto;
}

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

.nav-item a {
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding-block: 0.25rem;
}

.nav-item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #f4c66a, #ffdc8a);
  transition: width var(--duration-normal) var(--ease-standard);
}

.nav-item a:hover {
  color: var(--color-primary-strong);
}

.nav-item a:hover::after,
.nav-item a[aria-current="page"]::after {
  width: 100%;
}

.nav-item a[aria-current="page"] {
  color: var(--color-primary-strong);
}

.nav-item--cta .nav-cta {
  font-size: 0.7rem;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(5, 8, 18, 0.85);
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  color: var(--color-text);
}

.nav-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--duration-normal) var(--ease-standard),
              opacity var(--duration-normal) var(--ease-standard),
              background-color var(--duration-normal) var(--ease-standard);
}

.nav-toggle:focus-visible {
  box-shadow: var(--shadow-focus);
}

/* Mobile-first: collapse navigation */
@media (max-width: 799px) {
  .nav-toggle {
    display: flex;
    flex-direction: column;
  }

  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: 72px;
    background: rgba(5, 8, 18, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--ease-standard),
                transform var(--duration-normal) var(--ease-standard);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-4);
  }

  .nav-item--cta {
    margin-top: var(--space-2);
    width: 100%;
  }

  .nav-item--cta .nav-cta {
    width: 100%;
    justify-content: center;
  }

  /* Icon transform to X when open */
  .nav-toggle.is-active .nav-toggle-bar:first-child {
    transform: translateY(2px) rotate(45deg);
  }

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

/* Desktop: inline navigation */
@media (min-width: 800px) {
  .site-nav {
    position: static;
  }

  .nav-list {
    padding: 0;
  }
}