/* 基本設定 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: "Helvetica Neue", Arial, "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.site-header .container {
    padding:0;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ヘッダー */
.site-header {
    text-align: center;
    padding: 30px 0 0;
}

.logo {
    height: 60px;
    margin: 0 auto;
}

/* セクション共通見出し */
.section-title {
    display: inline-block;
    padding: 10px 40px;
    border-radius: 50px;
    margin-bottom: 30px;
    font-size: 1.2rem;
}

h2 img {
    width:400px;
}

/* キービジュアル */
.hero-section {
    text-align: center;
        padding-bottom: 50px;
}

.hero-box {

    
}

.hero-copy {
    margin-top: 20px;
    font-size: 1.8rem;
    color: #444;
}

.hero-copy img {
    width:70%;
    margin: 60px auto 20px;
}



.hero-description {
    font-size:1.1em;
    font-weight:bold;
    line-height: 2.3em;
}



/* 団体について (グレー背景) */
.about-section {
    background-color: #eee;
    text-align: center;
    background-image:url(img/background.png);
    background-size:10%;
    font-weight:bold;
    line-height: 2.3em;
    padding-bottom: 30px;
}

.flex-content {
    display: flex;
    gap: 30px;
    align-items: center;
    text-align: left;
}

.content-images img {
    margin-bottom: 10px;
    border-radius: 8px;
}

/* 活動内容 (薄緑背景) */
.activities-section {
    background-color: #c9e9cc;
    text-align: center;
}

.activity-item {
    display: flex;
    margin-bottom: 50px;
    border-radius: 10px;
    text-align: left;
}

.activity-item img {
    width: 300px;
    margin-right: 20px;
    object-fit:contain;
}

.activity-text h3 {
    font-size:1.4em;
}

.activity-text p {
    font-weight:bold;
}

/* 参加募集 (オレンジ/黄色背景) */
.join-section {
    background-color: #ffde59;
    text-align: center;
    padding-bottom:50px;
}

.join-card {
    padding: 40px;
    border-radius: 30px;
    max-width: 600px;
    margin: 0 auto;
}

.join-card h2 img {
    width:100%;
}

.join-card p {
    font-weight:bold;
    line-height:2.3em;
    margin-top:30px;
    text-align:center;
}

.line-btn {
    display: block;
    color: #fff;
    text-decoration: none;
    padding: 15px;
    border-radius: 10px;
    margin-top: 20px;
    font-size: 1.2rem;
}

.line-btn:hover {
    opacity:0.8;
    transition:0.2s;
}

.site-footer {
    background: #fff;
    padding:40px;
    font-size:0.8em;
    font-weight:bold;
    text-align:center;
}





/*フォーム */

.contact-form {
  max-width: 400px;
  margin: 0 auto;
  font-family: sans-serif;
}

.form-label {
  display: block;
  font-weight: bold;
  margin: 20px 0 8px;
    text-align: left;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 8px;
  background-color: #eee;
  font-size: 16px;
}

.form-textarea {
  height: 120px;
  resize: none;
}

.form-button {
  width: 100%;
  margin-top: 24px;
  padding: 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(90deg, #5b2be0, #2d0ea3);
  color: #fff;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
}



/* レスポンシブ対応 */
@media (max-width: 768px) {
    .flex-content, .activity-item {
        flex-direction: column;
    }
    .activity-item img {
        width: 100%;
        margin-right: 0;
        margin-bottom: 15px;
    }

    .logo {
        width: 80%;
    object-fit: contain;
    }

    .hero-copy img {
        width:90%;
        margin: 30px auto 20px;
    }

    .hero-copy img {
        font-size:0.8em;
    }

    .hero-description {
        font-size:0.8em;
    }

    .hero-section {
        padding-bottom:0;
    }

    .about-section .section-title {
        margin-bottom:0;
    }

    .about-section .content-images {
        width:70%;
    }

    .flex-content {
        gap:10px;
    }

    .content-text {
        font-size:0.9em;
        text-align:justify;
        line-height: 2em;
    }

    .join-card {
        padding:0;
    }

    .join-card p {
        font-size:0.8em;
    }

    .contact-form {
        max-width:80%;
    }
}