/* Header-specific styles for CIKSORUT LTD */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.85);
}

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

.site-header__branding {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.site-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-50);
}

.site-logo span {
  color: var(--color-primary);
}

.site-header__tagline {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

/* Navigation */

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

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

.nav-list__item a {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav-list__item a:hover,
.nav-list__item a:focus-visible {
  color: var(--gray-50);
  border-bottom-color: var(--color-primary);
}

.nav-list__item--highlight a {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(249, 115, 22, 0.4);
  background: radial-gradient(circle at 0 0, rgba(249, 115, 22, 0.3), rgba(15, 23, 42, 0.98));
}

.nav-list__item--highlight a:hover,
.nav-list__item--highlight a:focus-visible {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #0b1120;
  border-color: transparent;
}

/* Mobile toggle */

.site-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  color: var(--gray-100);
  font-size: var(--font-size-sm);
  cursor: pointer;
  background: rgba(15, 23, 42, 0.9);
}

.site-header__toggle:hover {
  border-color: var(--color-primary);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.site-header__toggle-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}

.site-header__toggle-icon span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* Responsive behavior */

@media (max-width: 768px) {
  .site-header__inner {
    align-items: center;
  }

  .site-header__tagline {
    display: none;
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid rgba(15, 23, 42, 0.85);
    transform-origin: top;
    transform: scaleY(0.8);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .site-header__nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: scaleY(1);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

  .nav-list__item {
    width: 100%;
  }

  .nav-list__item a {
    display: block;
    width: 100%;
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(31, 41, 55, 0.9);
  }

  .nav-list__item:last-child a {
    border-bottom: none;
  }

  .nav-list__item--highlight a {
    margin-top: var(--space-2);
    text-align: center;
  }
}

@media (min-width: 769px) {
  .site-header__nav {
    position: static;
  }
}