/* =============================================================================
   SITE HEADER — BEM Component
   Block: .site-header
   ============================================================================= */

/* -----------------------------------------------------------------------------
   Block
   ----------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--surface-primary);
  border-bottom: 0.5px solid var(--surface-border);
  transition: box-shadow var(--transition-base);
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 68px;
}

/* -----------------------------------------------------------------------------
   Element: Logo
   ----------------------------------------------------------------------------- */
.site-header__logo {
  flex-shrink: 0;
  text-decoration: none;
}

.site-logo {
  display: flex;
  align-items: baseline;
  gap: 0;
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.site-logo__accent {
  color: var(--color-brand);
}

/* Optional: show image logo if set */
.site-logo__img {
  max-height: 44px;
  width: auto;
}

/* -----------------------------------------------------------------------------
   Element: Navigation
   ----------------------------------------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.site-nav__item {
  position: relative;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: color var(--transition-base), background-color var(--transition-base);
  white-space: nowrap;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--color-brand);
  background-color: var(--color-brand-light);
}

.site-nav__link--active,
.current-menu-item > .site-nav__link,
.current-page-ancestor > .site-nav__link {
  color: var(--text-primary);
  position: relative;
}

.site-nav__link--active::after,
.current-menu-item > .site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background: var(--color-brand);
  border-radius: var(--radius-full);
}

/* CTA button in nav */
.site-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background-color: var(--color-brand);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-base), transform var(--transition-fast);
  white-space: nowrap;
}

.site-nav__cta:hover {
  background-color: var(--color-brand-dark);
  transform: translateY(-1px);
}

.site-nav__cta:active {
  transform: translateY(0);
}

/* -----------------------------------------------------------------------------
   Element: Hamburger (mobile)
   ----------------------------------------------------------------------------- */
.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: none;
  border: 0.5px solid var(--surface-border);
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.site-header__toggle:hover {
  background-color: var(--surface-secondary);
}

.site-header__toggle-bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Toggle open state */
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

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

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* -----------------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .site-logo {
    flex-wrap: wrap;
    max-width: 100px;
  }
}
@media (max-width: 1024px) {
  .site-nav__list {
    gap: 0;
  }

  .site-logo {
    flex-wrap: nowrap;    
  }

  .site-nav__link {
    padding: var(--space-2);
    font-size: 0.75rem;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--surface-primary);
    border-bottom: 0.5px solid var(--surface-border);
    box-shadow: var(--shadow-md);
    padding: var(--space-4) var(--container-padding);
    z-index: var(--z-dropdown);
  }

  .site-header__toggle {
    display: flex;
  }

  .site-nav--open {
    display: flex;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }
}

@media (max-width: 768px) {
    

  .site-nav__link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    text-transform: none;
    letter-spacing: 0;
    font-weight: 500;
  }

  .site-nav__link--active::after {
    display: none;
  }

  .site-nav__cta {
    margin-top: var(--space-4);
    justify-content: center;
  }
}