html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  min-height: 100vh;
  background-color: #0b2f63;
  background-image: url("banner_fundo.png");
  background-repeat: no-repeat;
  background-size: 100% auto; 
  background-position: center 12%; 
  font-family: Arial, Helvetica, sans-serif;
  position: relative;
}

/* Logo */
.logo {
  position: absolute;
  top: 20px;
  left: 20px;
  height: 60px;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
  transition: transform 0.3s ease, filter 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.35));
}

/* Botão WhatsApp */
.whatsapp {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #25D366;
  color: #ffffff;
  text-decoration: none;
  padding: 16px 28px;
  font-size: 1.1rem;
  border-radius: 999px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4), 0 10px 25px rgba(0,0,0,.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.whatsapp:hover {
  transform: scale(1.08);
  background: #20bd5a;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5), 0 12px 30px rgba(0,0,0,.3);
}

.whatsapp:active {
  transform: scale(0.98);
}