/* --- mobile-menu.css --- */

/* =========================
   ハンバーガーボタン
========================= */
#menu-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    padding: 10px;
    box-sizing: border-box;
    transition: transform 0.4s ease;
}

#menu-toggle span {
    display: block;
    height: 4px;
    background-color: #000;
    border-radius: 2px;
    transition: all 0.4s ease;
}

body.dark #menu-toggle span {
    background-color: #fff;
}

body.menu-open #menu-toggle span:nth-child(1) {
    transform: rotate(-45deg) translate(-6px, 6px);
}

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

body.menu-open #menu-toggle span:nth-child(3) {
    transform: rotate(45deg) translate(-6px, -6px);
}

/* =========================
   モバイルメニュー
========================= */
#mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    padding-top: 80px;
    border-radius: 16px 0 0 16px;
    overflow-y: auto;
    z-index: 1000;

    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(28px) saturate(120%);
    box-shadow: -8px 0 24px rgba(0,0,0,0.25);
    transition: right 0.4s ease, background 0.3s;
}

body.dark #mobile-menu {
    background: rgba(10,10,10,0.6);
}

/* メニュー開閉 */
body.menu-open #mobile-menu {
    right: 0;
}

/* メニューリスト */
#mobile-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#mobile-menu li {
    margin: 0;
}

#mobile-menu a {
    display: block;
    padding: 18px 24px;
    font-size: 18px;
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    border-radius: 12px;
    margin: 6px 12px;
    border-bottom: 1px solid rgba(0,0,0,0.05);

    /* リキットガラス風 */
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(22px);
    transition: background 0.3s, color 0.3s, transform 0.3s;
}

body.dark #mobile-menu a {
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

#mobile-menu a:hover {
    background-color: rgba(0,188,212,0.2);
    color: #00bcd4;
    transform: translateX(4px);
}

/* =========================
   オーバーレイ
========================= */
#menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease;
    z-index: 900;
}

body.menu-open #menu-overlay {
    opacity: 1;
    visibility: visible;
}

/* =========================
   レスポンシブ
========================= */
@media (max-width: 480px) {
    #mobile-menu {
        width: 85%;
        padding-top: 70px;
    }

    #mobile-menu a {
        font-size: 16px;
        padding: 14px 20px;
    }
}