/* Layout: center content vertically dan horizontally */
.center-card {
  max-width: 400px;
  margin: 0 auto;
}
body.center-page {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* Text & symbol alignment */
h4, p, .btn {
  text-align: center;
}

/* Tombol lebar penuh */
.btn-full {
  width: 100%;
}

/* Spasi rapi pada kartu */
.card-center {
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

/* Responsif: adaptif mobile */
@media (max-width: 576px) {
  .center-card { width: 90%; }
}