/* === ベース設定 === */
body {
  font-family: "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  background: linear-gradient(to bottom right, #e3f2fd, #ffffff);
  color: #333;
  line-height: 1.8;
}

/* === 固定ヘッダー === */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #3aa9de;
  color: white;
  display: flex;
  justify-content: center; /* ← 中央寄せに変更 */
  align-items: center;
  gap: 3em; /* タイトルとナビの間隔を追加 */
  padding: 0.8em 1.5em;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  z-index: 1000;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

/* ナビゲーション */
nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
}

nav a {
  color: white;
  margin-left: 1em;
  margin-top: 0.2em;
  margin-bottom: 0.2em;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.2s;
}

nav a:hover {
  color: #ffe082; /* 少し柔らかい黄色のハイライト */
}

/* === メインコンテンツ === */
main {
  margin-top: 100px;
  padding: 2em 1.5em;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

section {
  background: white;
  padding: 1.8em;
  margin-bottom: 1.8em;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}

section:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* === タイトル === */
h2 {
  color: #0077b6;
  border-left: 6px solid #3aa9de;
  padding-left: 0.6em;
  margin-bottom: 0.8em;
}

/* === 段落・テキスト === */
p, li, blockquote {
  text-align: left;
  font-size: 1.05rem;
  line-height: 1.8;
}

blockquote {
  border-left: 4px solid #3aa9de;
  padding-left: 1em;
  margin: 0.8em 0;
  font-style: italic;
  color: #555;
}

/* === チケット予約 === */
#ticket-status.off {
  color: #d32f2f;
  font-weight: bold;
}

#ticket-status.on {
  color: #388e3c;
  font-weight: bold;
}

#ticket-form label {
  display: block;
  margin-top: 1em;
  font-weight: 600;
  color: #333;
}

#ticket-form input[type="text"],
#ticket-form input[type="email"] {
  display: block;
  width: 100%;
  max-width: 400px;
  padding: 0.6em;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  margin-top: 0.3em;
}

#ticket-form button {
  margin-top: 1.4em;
}

/* === ボタン === */
button {
  background: linear-gradient(90deg, #3aa9de, #0288d1);
  border: none;
  padding: 0.7em 1.5em;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.25s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

button:hover {
  background: linear-gradient(90deg, #4fc3f7, #0288d1);
  box-shadow: 0 4px 10px rgba(0,0,0,0.25);
  transform: translateY(-2px);
}

/* === フッター === */
footer {
  text-align: center;
  padding: 1.2em;
  background: #3aa9de;
  color: white;
  border-top: 3px solid #0288d1;
  font-size: 0.9rem;
}

/* === 管理者ページ === */
body.admin {
  background: #111;
  color: #eee;
}

body.admin header {
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(8px);
}

body.admin main {
  background: transparent;
}

body.admin section {
  background: #1c1c1c;
  color: #eee;
  box-shadow: 0 3px 8px rgba(255,255,255,0.1);
}

body.admin footer {
  background: #000;
  border-top: 2px solid #3aa9de;
}

.hidden { display: none; }

/* === スマホ対応 === */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }
  nav {
    width: 100%;
    margin-top: 0.5em;
  }
  main {
    margin-top: 140px;
  }
}