/* Reset & base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: #2A7B9B;
  background: linear-gradient(315deg,rgba(42, 123, 155, 1) 0%, rgba(87, 199, 133, 1) 50%, rgba(237, 221, 83, 1) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  min-height: 100vh;
}

/* Container & card */
.payment-container {
  width: 100%;
  max-width: 500px;
}

.payment-box {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

/* Headings */
.payment-box h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
}

/* Form layout */
.form-row {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

input[type="number"] {
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 6px;
}

/* Stripe Element styling */
.card-element {
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  background-color: white;
}

/* Button */
button {
  width: 100%;
  background-color: #0070f3;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 1rem;
  transition: background-color 0.2s ease-in-out;
}

button:hover {
  background-col