* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: #fff;
  border-bottom: 1px solid #ccc;
  flex-wrap: wrap;
}

header h1 {
  background: black;
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  transition: all 0.3s ease;
}

header h1:hover {
  background: navy;
  color: gold;
  transform: scale(1.05);
}

header nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

header nav a {
  color: black;
  text-decoration: none;
  font-weight: bold;
}

/* Payment Section */
.payment-wrapper {
  background: #d3effa;
  padding: 2rem;
  text-align: center;
  min-height: 80vh;
}

.payment-wrapper h2 {
  font-size: 1.6rem;
  margin-bottom: 2rem;
}

.qr-box {
  background: white;
  display: inline-block;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.qr-box img {
  max-width: 250px;
  height: auto;
  margin: 1rem 0;
}

.upi-id {
  font-size: 0.95rem;
  color: #333;
}

.scan-note {
  font-size: 0.9rem;
  color: #666;
  margin-top: 0.5rem;
}

.instructions {
  margin: 2rem 0 1rem;
  font-size: 0.95rem;
  color: #333;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

input[type="file"] {
  padding: 0.5rem;
  border-radius: 5px;
  background: white;
  border: 1px solid #ccc;
  width: 90%;
  max-width: 500px;
}

button {
  padding: 10px 20px;
  background: #2e3a59;
  color: white;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  font-size: 1rem;
}

button:hover {
  background: #1e2a40;
}

/* Responsive */
@media (max-width: 768px) {
  .qr-box img {
    max-width: 200px;
  }

  input[type="file"] {
    width: 100%;
  }
}