@media (min-width: 1025px) {
    .nav-overlay {
        display: none !important;
    }

    .nav-toggle {
        display: none;
    }

    nav {
        display: block;
    }

    .contact-button {
        display: inline-block;
    }
}


@media (max-width: 1024px) {

    .contact-button {
        display: none;
    }

    .header-container {
        justify-content: space-between;
        align-items: center;
    }

    nav {
        display: none;
    }

    .logo {
        position: relative;
        left: auto;
        transform: none;
        margin-right: auto;
    }


    /* モバイル用navはPCでは非表示 */
    .nav-overlay {
        display: none;
    }

    .nav-overlay.open {
        display: block;
    }

    /* ナビゲーションボタン基本 */
    .nav-toggle {
        position: relative;
        width: 55px;
        height: 30px;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        border: none;
        background: none;
        cursor: pointer;
        margin-right: 10px;
        z-index: 1001;
        padding-right: 30px;
    }


    /* 線（ハンバーガー） */
    .nav-toggle span {
        display: block;
        height: 3px;
        background-color: #333;
        border-radius: 2px;
        transition: all 0.3s ease;
    }

    /* MENU表示（擬似要素） */
    .nav-toggle::after {
        content: "MENU";
        position: absolute;
        top: 50%;
        left: 30px;
        transform: translateY(-50%);
        font-size: 0.9rem;
        font-weight: bold;
        color: #333;
    }


    /* メニューが開いてるときの変形 */
    .nav-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translateY(19px);
    }

    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translateY(-19px);
    }

    /* ドロップダウンメニュー（モバイル時は縦に展開） */
    .nav-overlay .dropdown-menu {
        position: static;
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        border: none;
        box-shadow: none;
        padding-left: 20px;
        padding-top: 8px;
        padding-bottom: 8px;
        background: transparent;
    }

    /* 開いたとき表示されるようにする */
    .nav-overlay .dropdown.active .dropdown-menu {
        display: block;
    }

    /* ドロップダウン内のリンク */
    .nav-overlay .dropdown-menu a {
        font-size: 1.2rem;
        color: #333;
        padding: 8px 0;
        border: none;
    }

    /* 矢印 ▼ 表示の調整 */
    .nav-overlay .dropdown-toggle::after {
        content: "▼";
        margin-left: 8px;
        font-size: 0.9rem;
        transition: transform 0.3s;
    }

    /* 開いてるときに ▼ を 180度回転（逆さに） */
    .nav-overlay .dropdown.active .dropdown-toggle::after {
        transform: rotate(180deg);
    }



    /* CLOSE表示 */
    .nav-toggle.open::after {
        content: "CLOSE";
    }

    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: white;
        z-index: 999;
        padding: 80px 30px 40px;
        box-sizing: border-box;
        overflow-y: auto;
    }

    .nav-overlay.open {
        display: block;
    }

    .nav-overlay ul {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
        gap: 24px;
    }

    .nav-overlay ul li a {
        font-size: 1.4rem;
        font-weight: bold;
        color: #333;
        border-bottom: 1px solid #eee;
        padding: 10px 0;
        text-decoration: none;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-contact {
        grid-column: auto;
    }

}