body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9fb;
  color: #333;
}
header {
  background: #6c63ff;
  color: #fff;
  padding: 1em 0;
  text-align: center;
}
nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 1em;
  font-weight: bold;
}
main {
  max-width: 600px;
  margin: 2em auto;
  padding: 1em;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(108,99,255,0.1);
}
section {
  margin-bottom: 2em;
}
button {
  background: #6c63ff;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.7em 1.2em;
  font-size: 1em;
  cursor: pointer;
  margin-top: 1em;
}
button:hover {
  background: #594de6;
}
#pet-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1em 0;
}
#pet-face {
  font-size: 3em;
}
#pet-input {
  margin-top: 1em;
  padding: 0.5em;
  width: 70%;
  border-radius: 4px;
  border: 1px solid #ddd;
}
footer {
  text-align: center;
  padding: 1em 0;
  background: #eee;
  color: #888;
  margin-top: 2em;
  font-size: 0.9em;
}