:root {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  font-weight: 400;
  font-size: 16px;
  color-scheme: light dark;
  color: #eee;
  background-color: #1a1a1a;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid #333;
}

main {
  flex: 1;
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

section {
  margin-bottom: 2rem;
  padding: 1rem;
  background-color: #252525;
  border-radius: 8px;
}

.date {
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.event-link,
.slide-link {
  display: block;
  margin-bottom: 0.5rem;
  color: #64b5f6;
  text-decoration: none;
  transition: color 0.3s ease;
}

.event-link:hover,
.slide-link:hover {
  color: #81d4fa;
}

.slide-link {
  font-size: 1.2rem;
}

.en {
  color: #a5d6a7;
}

.ja {
  color: #ef9a9a;
}

footer {
  text-align: center;
  padding: 1rem 0;
  border-top: 1px solid #333;
}

.footer-links {
  margin-bottom: 0.5rem;
}

.footer-links a {
  margin: 0 1rem;
  color: #64b5f6;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #81d4fa;
}

@media (max-width: 600px) {
  main {
    padding: 1rem;
  }

  .slide-link {
    font-size: 1rem;
  }
}

.slide-container {
  margin-top: 1rem;
  overflow-x: auto; /* 横スクロールを有効にする */
  white-space: nowrap; /* 画像を折り返さない */
}

.slide-container a {
  display: inline-block; /* 横並びにする */
  margin-right: 0.5rem; /* 画像間の間隔 */
}

.slide-container img {
  max-width: 100%; /* 画像の最大幅をコンテナに合わせる */
  height: auto; /* 高さを自動調整 */
}