body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: #f2f2f7;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 2rem;
}

.wrapper {
  width: 100%;
  max-width: 500px;
  margin: auto;
}

.card {
  background: white;
  padding: 2rem;
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.card h1 {
  margin-bottom: 1rem;
  font-weight: 600;
  color: #333;
}

input,
select {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 1rem;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 1rem;
}

button {
  width: 100%;
  background-color: #007aff;
  color: white;
  padding: 0.75rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background-color: #005edb;
}

#ad-block,
#result {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.ad-block {
  margin-top: 2rem;
  background: #fff;
  padding: 1rem;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
  text-align: center;
  color: #666;
}