body {
    margin: 0;
    font-family: system-ui, Arial, sans-serif;
    background: #f4f4f4;
}

.container {
    max-width: 480px;
    margin: auto;
    margin-top: 40px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    text-align: center;
    min-height: 150px;
}

h2 {
    font-size: 1.4rem;
}

button {
    padding: 14px 28px;
    margin: 10px;
    font-size: 1.1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    width: 40%;
    min-width: 120px;
}

button:nth-child(1) {
    background-color: #4CAF50;
    color: white;
}

button:nth-child(2) {
    background-color: #f44336;
    color: white;
}

@media (max-width: 500px) {
    button {
        width: 90%;
    }
}

.spinner {
  border: 6px solid #f3f3f3; /* Light grey */
  border-top: 6px solid #3498db; /* Blue */
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: inline-block;
  vertical-align: middle;
  animation: spin 1s linear infinite;
  margin-right: 8px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#loadingSpinner {
  display: flex;
  align-items: center;
  margin: 10px 0;
  font-family: sans-serif;
}