body {
  font-family: Roboto;
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f4f4f4;
}

.container {
  text-align: center;
  background-color: #ffffff;
  padding: 40px 50px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

a {
  display: block;
  margin: 12px 0;
  text-decoration: none;
  color: #0077cc;
  font-weight: bold;
}

a:hover {
  text-decoration: underline;
}

#btn_instalacao_pwa {
  display: none; /* controlado pelo JS */
  background: linear-gradient(135deg, #1e90ff, #0077cc);
  color: #ffffff;
  border: none;
  border-radius: 999px; /* totalmente redondo */
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0, 123, 255, 0.35);
  transition: all 0.25s ease;
}

#btn_instalacao_pwa:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(0, 123, 255, 0.45);
}

#btn_instalacao_pwa:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px rgba(0, 123, 255, 0.35);
}