* { margin:0; padding:0; box-sizing:border-box; }
/* ===== 全体のベースカラーとフォント設定 ===== */
body {
  background-color: #f5f5f5;
  color: #222222;
  font-family: 'Helvetica Neue', sans-serif;
  line-height: 1.6;
}

/* ===== ヘッダー ===== */
header {
  background: #0088a2;
  color: #fff;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #f5f5f5;
}
header a {
  color: #fff;
  text-decoration: none;
}
header a:hover {
  color: #f5f5f5;
} 

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #fff;
}

nav a {
  margin-left: 1rem;
  color: #fff;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

nav a:hover {
  color: #f5f5f5;
}

/* ===== ヒーローエリア（スライド画像付きの場合） ===== */
.hero-slider {
  position: relative;
  height: 300px;
  overflow: hidden;
}

.slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.slide.active {
  opacity: 1;
  z-index: 1;
}

.hero-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(255, 255, 255, 0.8);
  color: #0088a2;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  text-align: center;
  font-size: 1.8rem;
}

/* ===== セクション共通 ===== */
section {
  padding: 2rem 1rem;
  border-bottom: 1px solid #ddd;
  background-color: #ffffff;
}

section h2 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
  color: #0088a2;
  border-left: 4px solid #0088a2;
  padding-left: 0.5rem;
}

/* ===== スケジュールリスト ===== */
#schedule .game-list {
  list-style: none;
}

#schedule .game-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
}

#schedule .game-list li:last-child {
  border-bottom: none;
}

#schedule .date {
  color: #0088a2;
}

#schedule .opponent {
  font-weight: bold;
}

/* ===== 動画セクション ===== */
#videos .grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

#videos .video-item {
  background: #f0f0f0;
  border-radius: 6px;
  overflow: hidden;
}

/* ===== 音楽セクション ===== */
#music ul {
  list-style: none;
}

#music li {
  margin-bottom: 1rem;
  font-size: 1rem;
}

#music a {
  color: #0088a2;
  text-decoration: none;
  font-weight: bold;
}

#music a:hover {
  text-decoration: underline;
}

/* ===== フッター ===== */
footer {
  background: #0088a2;
  color: #fff;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.9rem;
}

footer a {
  color: #fff;
  text-decoration: none;
}

/* --- ハンバーガー用初期非表示 --- */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: #fff;
  cursor: pointer;
}

/* 通常表示（PC） */
.nav-menu {
  display: flex;
  gap: 1rem;
}

/* ===== レスポンシブ対応 ===== */
@media (min-width: 600px) {
  .hero-text {
    font-size: 2.2rem;
  }
}
@media (max-width: 768px) {
  /* ハンバーガーを表示 */
  .menu-toggle {
    display: block;
  }

  /* ナビは縦並び・非表示から開始 */
  .nav-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 60px;
    right: 1rem;
    background: #ffffff;
    border: 1px solid #ccc;
    padding: 1rem;
    z-index: 10;
  }

  .nav-menu a {
    color: #0088a2;
    padding: 0.5rem 0;
    text-decoration: none;
    font-size: 1rem;
  }

  .nav-menu.show {
    display: flex;
  }
}