@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New&display=swap');

body {
  font-family: 'Zen Kaku Gothic New', sans-serif;
  background: linear-gradient(to bottom, #e0f7fa, #ffffff);
  color: #333;
  text-align: center;
  padding: 20px;
  margin: 0;
}

h1, h2, h3 {
  color: #006064;
}

#start, #quiz, #result {
  max-width: 700px;
  margin: auto;
  background: #ffffffdd;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

button {
  padding: 12px 24px;
  margin: 10px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 6px;
  background-color: #0097a7;
  color: white;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #007c91;
}

.answer-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sns-buttons {
  margin-top: 30px;
}

.sns-buttons button {
  background-color: #eeeeee;
  color: #333;
  margin: 5px;
  border: 1px solid #ccc;
}

.sns-buttons button:hover {
  background-color: #ddd;
}

@media screen and (max-width: 600px) {
  button {
    width: 90%;
    font-size: 18px;
  }
}