/* RESET BÁSICO */
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: #333;
}

/* MENU FIXO */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #0a3d62;
  padding: 10px 0;
  z-index: 1000;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 0;
}

nav ul li {
  margin: 0 15px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

/* SEÇÕES PADRÃO */
section {
  padding: 60px 20px;
  max-width: 1000px;
  margin: auto;
}

/* BANNER (800x140) */
.banner {
  background-image: url("../img/banner01.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 140px;
  margin-top: 60px; /* espaço do menu fixo */
}

/* INTRO (texto abaixo do banner) */
.intro {
  text-align: center;
  padding: 30px 20px;
}

.intro h1 {
  margin-bottom: 10px;
}

.intro p {
  margin-bottom: 20px;
}

/* BOTÃO WHATSAPP */
.btn {
  display: inline-block;
  padding: 12px 25px;
  background: #25D366;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

/* PLANOS */
.plano {
  background: #f4f4f4;
  padding: 15px;
  margin: 15px 0;
  border-radius: 5px;
}

/* RODAPÉ */
footer {
  background: #0a3d62;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {

  nav ul {
    flex-direction: column;
  }

  nav ul li {
    margin: 8px 0;
  }

  .banner {
    height: 100px; /* reduz banner no celular */
  }

  section {
    padding: 40px 15px;
  }
}