/* 共通スタイル */
body {
  font-family: 'Noto Sans JP', sans-serif;
  margin: 0;
  background: linear-gradient(to bottom right, #f8fdff, #ffffff);
  color: #333;
}

header, footer {
  background-color: #e0f7ff;
  text-align: center;
  padding: 1rem;
}

header h1 {
  margin: 0.5rem 0;
}

nav {
  background-color: #d0f0ff;
  padding: 0.5rem;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #0077aa;
}

.nav-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-links a {
  text-decoration: none;
  color: #0077aa;
  font-weight: bold;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #005f7f;
}

.hero {
  background: url('hero-image.jpg') no-repeat center/cover;
  padding: 5rem 1rem;
  text-align: center;
  color: #fff;
}

section {
  padding: 2rem 1rem;
  max-width: 800px;
  margin: auto;
}

h2 {
  color: #59c;
  border-bottom: 2px solid #b3e5fc;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.event {
  margin-bottom: 2rem;
}

.event h3 {
  margin-bottom: 0.5rem;
  color: #006699;
}

.event ul {
  list-style: disc inside;
  padding-left: 1rem;
}

.contact-link {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background-color: #b3e5fc;
  color: #005f7f;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: background-color 0.3s;
}

.contact-link:hover {
  background-color: #a1dbee;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: center;
    background-color: #d0f0ff;
    padding: 1rem 0;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    margin: 0.5rem 0;
    font-size: 1rem;
  }

  header h1 {
    font-size: 1.2rem;
  }

  .hero {
    padding: 2rem 1rem;
  }

  .hero h2 {
    font-size: 1.5rem;
  }

  .hero p {
    font-size: 1rem;
  }

  section {
    padding: 1.5rem 1rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .event h3 {
    font-size: 1.1rem;
  }

  .event ul,
  .event p {
    font-size: 0.95rem;
  }

  .contact-link {
    width: 100%;
    text-align: center;
    box-sizing: border-box;
  }
}