header.navbar {
  display: flex;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 999;
  justify-content: center;
  background: var(--color-bg-navbar);
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  transition: background-color 0.3s ease;
  padding: 0;
  margin: 0;
}
.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  width: 100%;
  padding: 0 40px; 
  box-sizing: border-box;
}
.navbar-brand {
  text-decoration: none;
  font-size: 2.3rem;
  font-weight: bold;
  color: var(--color-navbar-text);
  transition: color 0.3s ease;
}

/* Botones de login/registro */
.navbar-auth a {
  border: 2px solid var(--color-navbar-text);
  background: transparent;
  color: var(--color-navbar-text);
  font-weight: 600;
  padding: 8px 20px;
  margin-left: 10px;
  border-radius: 6px;
  transition: all 0.3s ease;
  text-decoration: none;
  font-size: 0.95rem;
}
.navbar-auth a:hover {
  background-color: var(--color-navbar-text);
  color: #fff;
}
.navbar-auth .btn-accent {
  background-color: var(--color-secondary);
  color: var(--color-text);
  border: none;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.navbar-auth .btn-accent:hover {
  background-color: var(--color-secondary-dark);
  color: var(--color-text);
}

/* Responsive */
@media (max-width: 768px) {
  .navbar-container {
    flex-direction: column;
    align-items: center;
  }
  .navbar-brand {
    font-size: 1.4rem;
  }
  .navbar-auth {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
  }
  .navbar-auth a {
    padding: 6px 16px;
    font-size: 0.85rem;
  }
}