/* Header-specific styling for HOI & KI LTD */

.header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: #ffffff;
  backdrop-filter: blur(8px);
}

.header__inner {
  min-height: 64px;
}

.header__brand {
  text-decoration: none;
}

.header__brand-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.header__brand-icon {
  color: var(--color-primary-dark);
  font-size: 1rem;
}

.header__brand-text {
  display: flex;
  flex-direction: column;
}

.header__brand-name {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--gray-900);
}

.header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.header__nav {
  display: flex;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--gray-700);
  padding: 0.25rem 0;
}

.header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

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

.header__nav-link:hover,
.header__nav-link:focus-visible {
  color: var(--color-primary-dark);
}

.site-nav a.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

.site-nav a.is-active::after {
  width: 100%;
}

.header__nav-item--cta {
  margin-left: var(--space-2);
}

.header__nav-link--cta {
  padding-inline: 1.25rem;
  color: white !important;
  padding: 10px !important;
}

/* Mobile menu toggle */
.header__menu-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);
  background-color: #ffffff;
  color: var(--gray-700);
  font-size: var(--font-size-sm);
}

.header__menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.header__menu-toggle-icon {
  position: relative;
  width: 18px;
  height: 14px;
}

.header__menu-toggle-icon::before,
.header__menu-toggle-icon::after,
.header__menu-toggle-icon span {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.header__menu-toggle-icon::before {
  top: 0;
}

.header__menu-toggle-icon::after {
  bottom: 0;
}

.header__menu-toggle-icon span {
  top: 6px;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-toggle-icon::before {
  top: 6px;
  transform: rotate(45deg);
}

.header__menu-toggle[aria-expanded="true"] .header__menu-toggle-icon::after {
  bottom: 6px;
  transform: rotate(-45deg);
}

.header__menu-toggle[aria-expanded="true"] .header__menu-toggle-icon span {
  opacity: 0;
}

.header__menu-toggle-label {
  font-weight: 500;
}

/* Responsive navigation */
@media (max-width: 800px) {
  .header__menu-toggle {
    display: inline-flex;
  }

  .header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: max-height var(--transition-slow), opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  }

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

  .header__nav-item--cta {
    width: 100%;
    margin-left: 0;
  }

  .header__nav-link--cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .header__nav--open {
    max-height: 320px;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .header__nav {
    transition: none;
  }
}