/* ===== 言語切替ボタン ===== */
.lang-switcher {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 9999;
    display: flex;
    gap: 0;
    background: white;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(93, 64, 55, 0.25);
    overflow: hidden;
    border: 3px solid var(--orange, #FF6B35);
}
.lang-switcher-btn {
    border: none;
    background: white;
    color: var(--brown, #5D4037);
    padding: 8px 14px;
    font-family: 'Zen Maru Gothic', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.lang-switcher-btn:not(:last-child) {
    border-right: 2px solid var(--light-orange, #FFAB76);
}
.lang-switcher-btn:hover {
    background: var(--yellow, #FFE135);
}
.lang-switcher-btn.active {
    background: var(--orange, #FF6B35);
    color: white;
}

@media (max-width: 768px) {
    .lang-switcher {
        top: auto;
        bottom: 16px;
        right: 50%;
        transform: translateX(50%);
    }
    .lang-switcher-btn {
        padding: 10px 12px;
        font-size: 0.75rem;
    }
}