/* style.css */

/* リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

.wrapper {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 60px; /* Fixed header height */
}

/* ヘッダーとナビゲーション */
.page-header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

.page-header .nav {
    display: flex;
    justify-content: flex-end;
    list-style: none;
}

.page-header .nav-list {
    display: flex;
}

.page-header .nav li {
    display: inline;
}

.page-header .nav a {
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    font-size: 1.5em;
}

.page-header .nav a:hover {
    background-color: #575757;
    transition: background-color 0.3s;
}

.btn-burger {
    display: none;
    cursor: pointer;
    padding: 10px;
}

.btn-burger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #fff;
    margin: 5px 0;
    transition: 0.3s;
}

#navToggle:checked + .btn-burger + .nav {
    display: block;
}

.nav-toggle {
    display: none;
}

/* コンテンツ */
#content {
    background-color: #fff;
    padding: 20px;
    margin: 20px auto;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

#keywords ul, #activities ul {
    list-style: none;
    padding-left: 20px;
}

#keywords li, #activities li {
    margin-bottom: 10px;
}

h1, h2, h3 {
    margin-bottom: 20px;
}

h1 {
    font-size: 3em;
    text-align: center;
    margin-top: 20px;
}

h2 {
    font-size: 2.5em;
    border-bottom: 2px solid #333;
    padding-bottom: 5px;
}

h3 {
    font-size: 2em;
    margin-top: 20px;
}

p1 {
    font-weight: bold;
    text-decoration:underline;
}

a {
    color: #1a73e8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* フッター */
.page-footer {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    width: 100%;
    bottom: 0;
    left: 0;
    z-index: 1000;
}

.page-footer .nav {
    display: flex;
    justify-content: flex-end;
    list-style: none;
}

.page-footer .nav li {
    display: inline;
}

.page-footer .nav a {
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    font-size: 1.5em;
}

.page-footer .nav a:hover {
    background-color: #575757;
    transition: background-color 0.3s;
}

/* メディアクエリ */
@media (max-width: 768px) {
    .page-header .nav {
        display: none;
        flex-direction: column;
    }

    .page-header .nav-list {
        flex-direction: column;
    }

    .page-header .nav li {
        display: block;
    }

    .btn-burger {
        display: block;
    }

    .wrapper {
        padding-top: 50px;
    }

    h1 {
        font-size: 2em;
    }

    h2 {
        font-size: 1.5em;
    }

    h3 {
        font-size: 1.2em;
    }

    .page-footer .nav {
        flex-direction: column;
        align-items: center;
    }
}