.site-header {
  background: white;
  border-bottom: var(--border-sketch);
  position: sticky;
  top: 0;
  z-index: 100;
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-dark);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--color-dark);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sketch);
  transition: all 0.2s;
}

.nav-links a:hover {
  background: var(--color-gray-100);
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--color-dark);
  margin: 5px 0;
  transition: 0.3s;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: var(--spacing-md);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
}