/* JSによるスクロールロック時に適用される共通クラス */
body.is-scroll-locked {
    overflow: hidden;
    padding-right: var(--scrollbar-compensation, 0px);
}

/* --- ナビゲーション全体 --- */
.main-nav {
    margin: 0 auto;
    background-color: #fff;
    position: relative;
    border-radius: 6px;
    /* padding: 0 20px; */
}

.main-nav>ul {
    display: flex;
    justify-content: center;
    padding: 0px;
    column-gap: 20px;
}

.main-nav>ul>li {
    list-style: none;
}

.main-nav>ul>li>a {
    display: block;
    padding: 11px 15px 8px;
    color: #333;
    font-weight: bold;
    position: relative;
    border-bottom: solid 4px transparent;
    text-decoration: none;
}

.main-nav>ul>li:not(:last-child)>a::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: -11px;
    width: 1px;
    height: 24px;
    background-color: #D8D8D8;
}

.main-nav>ul>li.is-open>a {
    border-bottom: solid 4px #0C446E;
}


/* --- メガメニューパネル --- */
.mega-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 6px 0px 0px;
    z-index: 1000;
    box-sizing: border-box;
}

.main-nav>ul>li.is-open .mega-menu {
    display: block;
}

.mega-menu-content {
    display: block;
    background-color: #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 6px;
}

.mega-menu-column {
    flex: none;
}

.mega-menu-column ul {
    columns: 3;
    column-gap: 30px;
    padding: 12px 16px;
    list-style: none;
}

.mega-menu-column ul li a {
    display: flex;
    align-items: center;
    padding: 8px 0;
    color: #555;
}

.mega-menu-column ul li a::before {
    content: '';
    box-sizing: border-box;
    width: 9px;
    height: 9px;
    border-top: 2px solid #0C446E;
    border-right: 2px solid #0C446E;
    transform: rotate(45deg) translate(-2px, 2px);
    margin-right: 8px;
}


/* --- ハンバーガーメニュー (モバイル用) --- */
.hamburger-menu {
    display: none;
    cursor: pointer;
    padding: 15px;
    background: #0c446e;
    border: none;
    border-radius: 6px;
}

.hamburger-menu .bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #FFF;
    margin: 5px 0;
    transition: 0.4s;
}

/* --- レスポンシブ設定 --- */
@media (max-width: 1200px) {

    .hamburger-menu {
        display: block;
        position: fixed;
        top: 12px;
        right: 12px;
        z-index: 2000;
        transition: right 0.3s ease-in-out;
    }

    .hamburger-menu.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger-menu.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger-menu.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .main-nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background-color: #e0e8f0;
        align-items: center;
        padding: 0px;
        transition: left 0.4s ease-in-out;
        overflow-y: auto;
        margin: 0;
        z-index: 1900;
        border-radius: 0px;
    }

    .site-header-lower .main-nav {
        background-color: #e0e8f0;
    }

    .main-nav.active {
        left: 0;
    }

    .main-nav>ul {
        flex-direction: column;
        width: calc(100% - 30px);
        background-color: #FFF;
        border-radius: 6px;
        margin: 15px auto;
    }

    .main-nav>ul>li>a {
        padding: 15px;
        border-bottom: 1px solid #eee;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .mega-menu {
        display: none;
        position: static;
        width: auto;
        transform: none;
        left: auto;
        max-width: none;
        box-shadow: none;
        border-top: none;
        padding: 10px;
        background-color: #EEF1F4;
    }

    .mega-menu-content {
        background-color: transparent;
        box-shadow: none;
    }

    .mega-menu-column ul {
        columns: 2;
        padding: 0px;
        column-gap: 10px;
    }

    .mega-menu-column ul li {
        margin-bottom: 8px;
    }

    .mega-menu-column ul li:last-child {
        margin-bottom: 0;
    }

    .mega-menu-column ul li a {
        display: block;
        background-color: #FFF;
        color: #333;
        text-decoration: none;
        padding: 6px 8px;
        border-radius: 5px;
        box-shadow: 2px 2px 0px #C7CACC;
        transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
    }

    .mega-menu-column ul li a::before {
        display: none;
    }

    .mega-menu-column ul li a:hover {
        background-color: #0c446e;
        color: #fff;
        border-color: #0c446e;
    }
}

/* --- スクロールロック時のfixed要素の位置補正 --- */
body.is-scroll-locked .hamburger-menu {
    right: calc(12px + var(--scrollbar-compensation, 0px));
}