body {
  font-family: 'Roboto', sans-serif;
  background-color: #f8f9fa;
  margin: 0;
  padding-top: 2rem;
}

.header {
  padding: 1rem;
  text-align: center;
  background-color: #fff;
  border-bottom: 1px solid #e0e0e0;
}

.header h1 {
  font-size: 1.8rem;
  margin: 0;
  font-weight: 700;
}

.header a {
  color: #007bff;
  text-decoration: none;
}

.container {
  padding: 2rem;
}

.alert-custom {
  background-color: #e9f7ef;
  color: #155724;
  border: 1px solid #c3e6cb;
  border-radius: 0.25rem;
  padding: 1rem;
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.card {
  margin-bottom: 1.5rem;
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-5px);
}

.card-title img {
  width: 40px;
  height: 40px;
  margin-right: 0.5rem;
}

.card-title {
  display: flex;
  align-items: center;
}

.copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
}

.copy-btn i {
  margin-right: 0.5rem;
}

.toast-container {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 9999;
}

@media (max-width: 576px) {
  .card-title img {
      width: 30px;
      height: 30px;
  }
}

/* QR Code Styling */
.qr-code {
  margin-top: 1rem;
  text-align: center;
}

.qr-code img {
  max-width: 100%;
  height: auto;
}