* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: #0f172a;
  color: #f1f5f9;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

main {
  max-width: 420px;
  width: 100%;
  text-align: center;
}

h1 { margin-bottom: 4px; }
.subtitle { color: #94a3b8; margin-top: 0; margin-bottom: 24px; }

.plans {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-button {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 12px;
  color: #f1f5f9;
  padding: 16px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
}

.plan-button:hover { border-color: #22c55e; }

.plan-price { color: #22c55e; font-weight: 600; }

.hidden { display: none; }

.payment, .success {
  margin-top: 24px;
  background: #1e293b;
  border-radius: 12px;
  padding: 20px;
}

#qrImage { width: 220px; height: 220px; background: #fff; border-radius: 8px; margin: 12px 0; }

#qrCode {
  width: 100%;
  background: #0f172a;
  color: #f1f5f9;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 8px;
  font-size: 12px;
}

.copy-label { margin-bottom: 4px; color: #94a3b8; font-size: 14px; }

#paymentStatus { margin-top: 12px; color: #fbbf24; }

.success h2 { color: #22c55e; }