/* Header and Navigation Styles */

.header {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  color: var(--white);
  padding: var(--spacing-md) 0;
  position: relative;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.header.sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  color: var(--darker-gray);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  animation: slideDown 0.3s ease-out;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header.sticky .nav-link {
  color: var(--darker-gray);
}

.header.sticky .nav-link:hover,
.header.sticky .nav-link.active {
  background: var(--secondary-blue);
  color: var(--primary-blue);
}

.header.sticky .logo {
  color: var(--darker-gray);
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.05);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-yellow), var(--primary-pink));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--white);
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: inherit;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 3px;
  background: currentColor;
  transition: all var(--transition-fast);
  transform-origin: center;
}

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

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

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

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-list {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
  }

  .nav-list.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-xl);
    color: var(--darker-gray);
    border-bottom: 1px solid var(--medium-gray);
    text-align: center;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

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

  .mobile-menu-toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 var(--spacing-sm);
  }

  .logo {
    font-size: 1.25rem;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }
}