/* ----------------------------------------------------------------
   スマホ・タブレット（~900px）：ナビをドロワー化
   ---------------------------------------------------------------- */
.bd-mobile-bar,
.bd-nav-overlay {
    display: none;
}

@media screen and (max-width: 900px) {
    .bd-mobile-bar {
        display: flex;
        align-items: center;
        min-height: var(--bd-mobile-header-h);
        padding: 0.35rem max(0.85rem, env(safe-area-inset-right, 0px)) 0.35rem max(1rem, env(safe-area-inset-left, 0px));
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100102;
        background: linear-gradient(180deg, #ffffff 0%, var(--bd-ocean-foam) 100%);
        border-bottom: 1px solid var(--bd-border-soft);
        box-shadow: 0 2px 14px rgba(12, 45, 66, 0.1);
    }

    body.admin-bar .bd-mobile-bar {
        top: 32px;
    }

    @media screen and (max-width: 782px) {
        body.admin-bar .bd-mobile-bar {
            top: 46px;
        }
    }

    .bd-nav-toggle {
        display: inline-flex;
        align-items: center;
        gap: 0.65rem;
        min-height: 44px;
        min-width: 44px;
        padding: 0.4rem 0.75rem 0.4rem 0.5rem;
        border: 1px solid var(--bd-border-soft);
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.95);
        color: var(--bd-ocean-deep);
        font-size: 0.95rem;
        font-weight: 700;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
        transition: background 0.2s ease, border-color 0.2s ease;
    }

    .bd-nav-toggle:hover,
    .bd-nav-toggle:focus-visible {
        background: #fff;
        border-color: var(--bd-ocean-bright);
        outline: none;
    }

    .bd-nav-toggle:focus-visible {
        box-shadow: 0 0 0 3px rgba(42, 138, 184, 0.35);
    }

    .bd-nav-toggle__bars {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 22px;
        flex-shrink: 0;
    }

    .bd-nav-toggle__bar {
        display: block;
        height: 2px;
        background: var(--bd-ocean-deep);
        border-radius: 1px;
        transition: transform 0.25s ease, opacity 0.2s ease;
    }

    body.bd-nav-is-open .bd-nav-toggle__bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    body.bd-nav-is-open .bd-nav-toggle__bar:nth-child(2) {
        opacity: 0;
    }

    body.bd-nav-is-open .bd-nav-toggle__bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .bd-nav-overlay[hidden] {
        display: none !important;
    }

    .bd-nav-overlay:not([hidden]) {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 100099;
        margin: 0;
        padding: 0;
        border: none;
        background: rgba(12, 45, 66, 0.48);
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    .main-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: min(280px, 88vw);
        z-index: 100101;
        box-shadow: none;
        -webkit-overflow-scrolling: touch;
        top: var(--bd-mobile-header-h);
        height: calc(100vh - var(--bd-mobile-header-h));
    }

    body.admin-bar .main-sidebar {
        top: calc(32px + var(--bd-mobile-header-h));
        height: calc(100vh - 32px - var(--bd-mobile-header-h));
    }

    @media screen and (max-width: 782px) {
        body.admin-bar .main-sidebar {
            top: calc(46px + var(--bd-mobile-header-h));
            height: calc(100vh - 46px - var(--bd-mobile-header-h));
        }
    }

    @media (prefers-reduced-motion: reduce) {
        .main-sidebar {
            transition: none;
        }

        .bd-nav-toggle__bar {
            transition: none;
        }
    }

    body.bd-nav-is-open .main-sidebar {
        transform: translateX(0);
        box-shadow: 8px 0 36px rgba(12, 45, 66, 0.22);
    }

    .main-content {
        margin-left: 0;
        max-width: 100%;
        padding-top: calc(var(--bd-mobile-header-h) + 1rem);
        padding-left: max(clamp(0.9rem, 4vw, 1.25rem), env(safe-area-inset-left, 0px));
        padding-right: max(clamp(0.9rem, 4vw, 1.25rem), env(safe-area-inset-right, 0px));
        padding-bottom: max(2rem, env(safe-area-inset-bottom, 0px));
    }

    body.admin-bar .main-content {
        padding-top: calc(32px + var(--bd-mobile-header-h) + 1rem);
    }

    @media screen and (max-width: 782px) {
        body.admin-bar .main-content {
            padding-top: calc(46px + var(--bd-mobile-header-h) + 1rem);
        }
    }

    .main-sidebar .side-nav a {
        display: flex;
        align-items: center;
        padding: 0.65rem 0;
        min-height: 44px;
    }

    .bd-top-page {
        padding: 1.35rem 1.1rem 1.75rem;
    }

    .shop-info-container {
        margin-left: 0;
        margin-right: 0;
    }

    .bd-announcements {
        margin-left: 0;
        margin-right: 0;
    }
}