/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: var(--cor-fundo-claro);
  color: var(--cor-secundaria);
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  opacity: 80%;
}

header h1 {
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 2px;
}

header img {
  height: 35px;
  width: auto;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 15px;
}

nav ul li a {
  color: var(--cor-secundaria);
  font-weight: bold;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #ffcc00;
}

.btn-catalogo {
  margin-top: auto; /* empurra o botão para o final */
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--cor-primaria);
  color: #fff;
  border-radius: 20px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s;
}

.btn-catalogo:hover {
  background-color: var(--cor-secundaria);
}