/* 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 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-right: var(--spacing-xl);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 767px) {
  .logo-text {
    font-size: var(--font-size-lg);
  }
}

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

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

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

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

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

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.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(4px, -4px);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-lg);
  z-index: var(--z-fixed);
  max-height: calc(100vh - 70px);
  overflow-y: auto;
}

.nav-mobile.active {
  display: block;
}

.nav-mobile a {
  display: block;
  padding: var(--spacing-md);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

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

@media (max-width: 1200px) {
  .nav-desktop { display: none; }
  .mobile-menu-toggle { display: flex; }
}