/* Header Styles */
.site-header {
  background: var(--color-bg-primary);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--spacing-md) var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-text-heading);
}

.logo-img {
  height: 40px;
  width: auto;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.main-nav {
  display: flex;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: color var(--transition-fast);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.hamburger-line {
  width: 25px;
  height: 3px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

@media (max-width: 1200px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-base);
    z-index: var(--z-fixed);
    overflow-y: auto;
  }
  
  .main-nav.active {
    left: 0;
  }
  
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-xl);
    gap: 0;
  }
  
  .nav-link {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    border-bottom: var(--border-width) solid var(--color-border-light);
  }
  
  .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }
}