/* Navigation Styles */
.main-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  color: var(--nav-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  border-radius: 0.375rem;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  background: var(--nav-hover);
  color: var(--text-dark);
}

.nav-link.active {
  background: var(--nav-active);
  color: var(--white);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 0.5rem;
  height: 0.25rem;
  background: var(--nav-active);
  border-radius: 0.125rem;
}

/* Mobile Navigation */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin-left: 1rem;
}

.hamburger-line {
  width: 1.5rem;
  height: 2px;
  background: var(--nav-text);
  margin: 2px 0;
  transition: all 0.3s ease;
  border-radius: 1px;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-top: 1px solid var(--gray-300);
  z-index: 50;
}

.mobile-nav-link {
  display: block;
  padding: 1rem 1.5rem;
  color: var(--nav-text);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid var(--gray-300);
  transition: background 0.3s ease;
}

.mobile-nav-link:hover {
  background: var(--nav-hover);
}

.mobile-nav-link.active {
  background: var(--nav-active);
  color: var(--white);
}

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

/* Mobile menu states */
.mobile-menu.active {
  display: block;
}

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

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

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Responsive Navigation */
@media (max-width: 768px) {
  .main-nav .nav-link {
    display: none;
  }

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

@media (max-width: 480px) {
  .header-content {
    padding: 0 0.5rem;
  }

  .mobile-nav-link {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
}

/* Navigation accessibility */
.nav-link:focus,
.mobile-nav-link:focus {
  outline: 2px solid var(--nav-active);
  outline-offset: 2px;
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--nav-active);
  outline-offset: 2px;
}

/* Smooth transitions for better UX */
.header {
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}