/* Header Styles */

header {
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-right: var(--spacing-xl);
}

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

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

nav a {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
  display: block;
}

nav a:hover,
nav a.active {
  color: var(--color-primary);
  background: var(--bg-secondary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--text-primary);
}

@media (max-width: 1200px) {
  .mobile-menu-toggle { display: block; }
  nav { display: none; }
  nav.mobile-open { display: block; position: fixed; top: 70px; left: 0; right: 0; background: var(--bg-primary); box-shadow: var(--shadow-lg); z-index: 999; }
  nav.mobile-open ul { flex-direction: column; padding: var(--spacing-lg); }
}