body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
}

header, footer {
  text-align: center;
  margin-bottom: 30px;
}

textarea, input[type="text"] {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 6px;
  resize: vertical;
  font-size: 1rem;
  box-sizing: border-box;
}

button {
  margin: 5px 5px 10px 0;
  padding: 8px 16px;
  background-color: #2c7be5;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
  font-size: 0.95rem;
  transition: background 0.3s ease;
}

button:hover {
  background-color: #1a5dcc;
}

section {
  background: white;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

pre {
  background: #f3f3f3;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: monospace;
  margin-top: 10px;
}

.ad-container {
  text-align: center;
  margin: 20px 0;
}

@media (max-width: 768px) {
  button {
    width: 100%;
    margin-bottom: 8px;
  }
}