body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 1rem;
  background: #e7d5b3; /* Envelope-like color */
}

.container {
  max-width: 500px;
  margin: auto;
  background: #e7d5b3;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 0 10px #ccc;
}

h1 {
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

input, button {
  padding: 0.7rem;
  font-size: 1rem;
}

.receipt {
  border: 1px dashed #999;
  padding: 1rem;
  margin-top: 1rem;
  background: #e7d5b3;
}

.receipt-header {
  text-align: center;
  border-bottom: 1px solid #ddd;
  margin-bottom: 1rem;
}

.logo {
  max-width: 100px;
  margin-bottom: 0.5rem;
}

.receipt-footer {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #444;
  border-top: 1px dashed #ccc;
  padding-top: 0.5rem;
}

.btn-group {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
}

@media print {
  body * {
    visibility: hidden;
  }
  .receipt, .receipt * {
    visibility: visible;
  }
  .receipt {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
  }
}