/* styles.css */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
}

/* メインコンテナ */
.philosophy-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* セクション共通 */
section {
  margin-bottom: 80px;
  text-align: center;
}

section h2 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 40px;
  color: #333;
}

/* ミッションセクション */
.mission-section h1 {
  font-size: 2.4rem;
  font-weight: bold;
  margin-bottom: 60px;
  color: #333;
}

.mission-content h2 {
  font-size: 2rem;
  color: #0066cc;
  margin-bottom: 30px;
}

.mission-content p {
  font-size: 1.2rem;
  line-height: 2;
  color: #555;
}

/* ビジョンセクション */
.vision-section {
  background: #f8f9fa;
  padding: 60px 20px;
  margin: -20px -20px 80px;
}

.vision-messages {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.vision-text {
  font-size: 1.4rem;
  color: #444;
  line-height: 1.8;
}

/* 行動指針セクション */
.values-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.values-list li {
  background: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.values-list h3 {
  font-size: 1.3rem;
  color: #0066cc;
  margin-bottom: 15px;
  font-weight: bold;
}

.values-list p {
  color: #666;
  line-height: 1.6;
}

/* 戻るボタン */
.back-button-container {
  text-align: center;
  margin-top: 60px;
}

.back-button {
  display: inline-block;
  padding: 15px 40px;
  background: #0066cc;
  color: #fff;
  text-decoration: none;
  border-radius: 30px;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.back-button:hover {
  background: #0052a3;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .philosophy-container {
    padding: 20px;
  }

  section {
    margin-bottom: 60px;
  }

  .mission-section h1 {
    font-size: 2rem;
  }

  .mission-content h2 {
    font-size: 1.6rem;
  }

  .vision-text {
    font-size: 1.2rem;
  }

  .values-list {
    grid-template-columns: 1fr;
  }

  .values-list li {
    padding: 20px;
  }
}

.news-container {
  max-width: 800px;
  margin: 50px auto;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  padding: 30px;
}

.news-title {
  font-size: 2em;
  border-bottom: 2px solid #007BFF;
  padding-bottom: 10px;
  margin-bottom: 20px;
  color: #333;
}

.news-item {
  display: flex;
  border-bottom: 1px solid #ddd;
  padding: 20px 0;
  align-items: flex-start;
}

.news-date {
  flex: 0 0 100px;
  font-weight: bold;
  color: #555;
}

.news-content {
  flex: 1;
}

.news-heading {
  margin: 0 0 10px;
  font-size: 1.2em;
  color: #222;
}

.news-description {
  margin: 0;
  color: #666;
}

.news-item:last-child {
  border-bottom: none;
}

.button-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.button {
  width: 100px;
  padding: 15px;
  text-align: center;
  background-color: #007bff;
  color: white;
  text-decoration: none;
  font-size: 18px;
  border-radius: 5px;
  transition: background 0.3s;
}

.button:hover {
  background-color: #0056b3;
}

.button-main {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 10vh;
  background-color: #f5f5f5;
}