.checkin-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(109,61,244,0.28), transparent 35%),
    var(--fondo);
}

.checkin-card {
  width: min(420px, 100%);
  padding: 28px;
  text-align: center;
}

.icon {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: rgba(45,158,107,0.15);
  display: grid;
  place-items: center;
  font-size: 2rem;
  margin: 0 auto 18px;
}

.checkin-card h1 {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.checkin-card p {
  color: var(--texto-2);
  line-height: 1.6;
}

.checkin-card .btn {
  width: 100%;
  margin-top: 14px;
}

.mensaje {
  margin-top: 16px;
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  .checkin-page {
    padding: 16px;
    align-items: center;
  }

  .checkin-card {
    padding: 22px 16px;
    border-radius: 20px;
  }

  .icon {
    width: 64px;
    height: 64px;
    font-size: 1.7rem;
  }

  .checkin-card h1 {
    font-size: 1.45rem;
    line-height: 1.2;
  }

  .checkin-card p {
    font-size: 0.92rem;
  }

  #qrImagen {
    width: 190px !important;
  }
}