/* --------------------
   全体レイアウト
-------------------- */
body {
  font-family: "Helvetica Neue", "Hiragino Sans", "游ゴシック体", Arial, sans-serif;
  line-height: 1.8;
  margin: 0;
  padding: 0;
  color: #333;
  background-color: #fafafa;
}

.container {
  width: 90%;
  max-width: 1000px;
  margin: 2rem auto;
}

/* --------------------
   ヘッダー＆ナビ
-------------------- */
header {
  background: #fff;
  border-bottom: 1px solid #ddd;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #ff6b6b;
  padding: 1rem;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
}

nav a {
  text-decoration: none;
  color: #333;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

nav a:hover,
nav a.active {
  background: #ffeaea;
  color: #ff6b6b;
}

/* --------------------
   ヒーローセクション
-------------------- */
.hero {
  background: linear-gradient(135deg, #ff6b6b, #ff4040);
  color: #fff;
  text-align: center;
  padding: 4rem 1rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.95;
}

.btn-hero {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.8rem 1.5rem;
  background: #fff;
  color: #ff6b6b;
  font-weight: bold;
  text-decoration: none;
  border-radius: 30px;
  border: 2px solid #fff;
  transition: all 0.3s ease;
}

.btn-hero:hover {
  background: #ff6b6b;
  color: #fff;
  border-color: #ff6b6b;
}

/* --------------------
   見出し
-------------------- */
h1, h2, h3 {
  color: #222;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2rem;
  border-bottom: 2px solid #ff6b6b;
  display: inline-block;
  padding-bottom: 0.3rem;
}

/* --------------------
   フォーム
-------------------- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-form .form-group {
  display: flex;
  flex-direction: column;
}

.contact-form label {
  font-weight: bold;
  margin-bottom: 0.5rem;
  color: #444;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  box-sizing: border-box;
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #ff6b6b;
  outline: none;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  background: #ff6b6b;
  color: #fff;
  border: none;
  padding: 0.8rem 1.8rem;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
  align-self: flex-start;
}

.contact-form button:hover {
  background: #ff4040;
}

/* --------------------
   同意チェック枠
-------------------- */
.agreement-box {
  border: 2px solid #ff6b6b;
  padding: 1rem;
  border-radius: 6px;
  background: #fff5f5;
  font-weight: bold;
}

.agreement-box label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.agreement-box input[type="checkbox"] {
  width: 1.2rem;
  height: 1.2rem;
}

/* --------------------
   過去イベントギャラリー
-------------------- */
.past-events {
  margin-top: 50px;
  padding: 30px 20px;
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.past-events h2 {
  text-align: center;
  color: #ff6b6b;
  margin-bottom: 20px;
}

.event-gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.event-gallery figure {
  width: 280px;
  text-align: center;
}

.event-gallery img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.event-gallery figcaption {
  font-size: 0.9em;
  color: #666;
  margin-top: 6px;
}

.past-events .note {
  text-align: center;
  font-size: 0.85em;
  color: #777;
  margin-top: 12px;
}

/* --------------------
   フッター
-------------------- */
footer {
  margin-top: 3rem;
  padding: 2rem 1rem;
  background: #fdf4f4;
  text-align: center;
  font-size: 0.9rem;
  border-top: 1px solid #f5c9c9;
  color: #444;
}

/* --------------------
   レスポンシブ対応
-------------------- */
@media (max-width: 768px) {
  .hero {
    padding: 2.5rem 1rem;
  }
  .hero h1 {
    font-size: 1.8rem;
    line-height: 1.3;
  }
  .hero p {
    font-size: 1rem;
  }
  .menu-toggle {
    display: block;
    font-size: 1.8rem;
    background: none;
    border: none;
    cursor: pointer;
    margin: 0.5rem 1rem;
  }
  nav ul {
    display: none;
    flex-direction: column;
    background: #fff;
    border-top: 1px solid #ddd;
    padding: 1rem;
  }
  nav ul.active {
    display: flex;
  }
  .btn-hero {
    width: 100%;
  }
}

/* PC用 */
@media (min-width: 769px) {
  .menu-toggle {
    display: none;
  }
  nav ul {
    display: flex;
  }
}
/* --------------------
   イベントポスター調整
-------------------- */
.event-poster {
  text-align: center;
  margin: 2rem 0;
}

.event-poster img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

/* ✅ PC表示時のみサイズを少し小さくする */
@media (min-width: 769px) {
  .event-poster img {
    width: 70%; /* ←お好みで 60〜80% に調整可能 */
    max-width: 600px; /* 最大幅の制限を加えるのも◎ */
  }
}