:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #e0f2fe;
  color: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(100%, 440px);
  padding: 36px 28px;
  border-radius: 24px;
  background: white;
  box-shadow: 0 20px 60px rgb(15 23 42 / 14%);
  text-align: center;
}

.nfc-icon {
  width: 124px;
  height: 124px;
  margin: 0 auto 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #bae6fd;
  color: #075985;
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -10px;
  transform: rotate(-12deg);
}

h1 {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 6vw, 2.1rem);
}

p {
  line-height: 1.5;
}

button {
  width: 100%;
  margin-top: 22px;
  padding: 16px 20px;
  border: 0;
  border-radius: 14px;
  background: #075985;
  color: white;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.progress {
  width: 38px;
  height: 38px;
  margin: 26px auto 0;
  border: 4px solid #bae6fd;
  border-top-color: #075985;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.hint {
  margin: 26px 0 0;
  color: #64748b;
  font-size: 0.88rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}