header {
  background: #ffffff;
  color: #333;
  padding: var(--spacing-sm) 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid #e9ecef;
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  box-sizing: border-box;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  gap: var(--spacing-md);
  min-height: 70px;
}

/* Logo - Izquierda */
.logo {
  flex-shrink: 0;
  text-align: left;
}

.logo h1 {
  margin: 0;
  font-size: 1.8rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: 0.5px;
  line-height: 1;
}

.logo .tagline {
  font-size: 0.8rem;
  color: #666;
  margin: 2px 0 0 0;
  font-weight: 400;
  line-height: 1;
  text-align: center;
}

/* Navegación y Buscador - Derecha (agrupados) */
.nav-search-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

nav {
  flex-shrink: 0;
}

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

nav li a {
  color: #333;
  text-decoration: none;
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: all 0.3s ease;
  position: relative;
  font-size: 0.85rem;
  white-space: nowrap;
}

nav li a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

nav li a:hover,
nav li a.active {
  color: var(--color-primary);
  background: rgba(49, 129, 255, 0.05);
}

nav li a:hover::after,
nav li a.active::after {
  width: 100%;
}

/* Destacar opción CERTIFICADOS */
nav li a[href="/certificados"] {
  background: var(--color-accent);
  color: var(--color-gray-dark);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-family-primary);
}

nav li a[href="/certificados"]:hover {
  transform: scale(1.05);
  background: var(--color-accent-light);
  color: var(--color-gray-dark);
}

/* Remover el after para certificados ya que tiene background */
nav li a[href="/certificados"]::after {
  display: none;
}

/* Buscador - Derecha */
.buscador {
  display: flex;
  align-items: center;
  position: relative;
  flex-shrink: 0;
}

.buscador input {
  padding: var(--spacing-xs) var(--spacing-md);
  padding-right: 45px;
  border: 2px solid var(--color-accent);
  border-radius: 20px;
  outline: none;
  font-size: 0.85rem;
  width: 200px;
  font-family: var(--font-family-primary);
  background: #ffffff;
  color: #333;
  transition: all 0.3s ease;
  height: 36px;
}

.buscador input::placeholder {
  color: #999;
}

.buscador input:focus {
  border-color: var(--color-accent-light);
  background: #ffffff;
  transform: scale(1.02);
}

/* Responsive */
@media (max-width: 950px) {
  .header-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    max-height: 150px;
  }

  .logo {
    text-align: center;
  }

  .logo h1 {
    font-size: 1.2rem;
  }

  .nav-search-group {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
  }

  nav ul {
    justify-content: center;
    gap: var(--spacing-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    padding: 0 12px 4px 12px;
    box-sizing: border-box;
  }

  nav li {
    flex: 0 0 auto;
  }

  nav li a {
    min-width: 80px;
    text-align: center;
    font-size: 0.8rem;
    padding: 6px 10px;
  }
}