/* =============================
   🌐 Encabezado (header principal)
   ============================= */
header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: #ffea99;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 0 0.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.logo-container img {
  height: 50px;
  margin-bottom: 0.3rem;
}

nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  font-weight: 600;
  color: #000;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #b10000;
}

.vendedor-acceso {
  font-size: 1rem;
  color: #bbb;
  position: absolute;
  top: 1rem;
  right: 1rem;
  text-decoration: none;
}

.vendedor-acceso:hover {
  color: #fff;
}

@media (max-width: 600px) {
  header {
    padding: 0.8rem 0 0.5rem;
  }

  .logo-container img {
    height: 40px;
    margin-bottom: 0.2rem;
  }

  nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem;
  }

  nav a {
    font-size: 0.9rem;
  }

  .vendedor-acceso {
    font-size: 0.9rem;
    top: 0.8rem;
    right: 0.8rem;
  }
}