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

.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: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo img {
  height: 50px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--text-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

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

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: all var(--transition-base);
}

@media (max-width: 1200px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-xl);
    transition: left var(--transition-base);
    z-index: var(--z-dropdown);
  }
  
  .nav.active {
    left: 0;
  }
  
  .nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    width: 100%;
  }
}