:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f3f5f8;
  color: #17212b;
}

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

.card {
  width: min(100%, 480px);
  background: white;
  border: 1px solid #dce2e8;
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.08);
}

.badge {
  display: inline-block;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  background: #fff3cd;
  color: #694c00;
}

h1 { margin: 14px 0 8px; }
.lead { margin: 0 0 22px; color: #52606d; }

.amount-box {
  display: grid;
  gap: 4px;
  padding: 18px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: #f7f9fb;
}

.amount-box span, .amount-box small { color: #667788; }
.amount-box strong { font-size: 34px; }

.status {
  padding: 12px 14px;
  margin: 14px 0 18px;
  border-radius: 10px;
  background: #eef3f8;
  font-size: 14px;
}
.status[data-kind="success"] { background: #e9f8ef; }
.status[data-kind="warning"] { background: #fff4d8; }
.status[data-kind="error"] { background: #fdecec; color: #8a1c1c; }

paypal-button {
  width: 100%;
  --paypal-button-border-radius: 10px;
}

details { margin-top: 20px; color: #5c6975; font-size: 14px; }