body {
  background-color: #001f3f !important;
  min-height: 100vh;
  color: white;
}

.alert-box {
  background-color: rgba(0, 51, 102, 0.4);
  border-radius: 1rem;
  padding: 2.5rem 2rem;
  max-width: 500px;
  width: 100%;
  text-align: center;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
  margin: 50px auto 20px auto;
}

.alert-icon {
  font-size: 3rem;
  color: #dc3545;
  margin-bottom: 1rem;
}

.alert-title {
  font-size: 1.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.alert-text {
  font-size: 1rem;
  color: #ccc;
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-whatsapp {
  background-color: #25d366;
  color: white;
  font-size: 1rem;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 0.5rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-whatsapp:hover {
  background-color: #20b358;
  color: white;
}

.btn-whatsapp i {
  font-size: 1.3rem;
  margin-right: 0.5rem;
}