.sidemenu .accordion-body,
.sidemenu .accordion-collapse,
.sidemenu .accordion-item {
    border: none !important;
    border-top: none !important;
    box-shadow: none !important;
    outline: none !important;
}


.sidemenu .accordion-item {
    background-color: #111111; /* 設定アコーディオンの背景を黒 */
    border: none;
}

.sidemenu .accordion-button {
    border-radius: 0 !important;
    font-size: inherit !important;
    font-weight: normal !important;
    background-color: inherit !important;
    font-family: inherit !important;
    color: white !important;
    border: none;
    box-shadow: none;
    padding: 0px 20px 0px 0px !important;
    margin-top: auto;
    margin-bottom: auto;
    display: flex;
    height: 44px;
    width: 100%;
    transition: none !important;
}

.sidemenu .accordion-button::after {
    filter: invert(1) !important;
}

.sidemenu .accordion-button:not(.collapsed) {
    box-shadow: none !important;
}

.sidemenu .accordion-button:not(.collapsed)::after {
    filter: invert(1) !important; /* ← これを追加 */
    background-image: var(--bs-accordion-btn-icon) !important;
}

.sidemenu .accordion-button:hover {
    transition: none !important;
    background-color: rgba(255, 255, 255, 0.2) !important;
}

.sidemenu .accordion-button::after {
    filter: invert(1); /* アイコンの色を白に */
}

.sidemenu .accordion-button:focus {
    box-shadow: none !important;
    outline: none !important;
}

.sidemenu .accordion-body {
    font-size: 14px !important;
    background-color: #111111; /* 設定の中のメニューの背景を少しグレーに */
    height: auto !important;
    padding: 0px !important;
    border-top: none !important;
}

.sidemenu .accordion-body a {
    color: white;
    padding-left: 40px;
}

.sidemenu .accordion-body a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* .accordion-collapse の白い線を削除 */
.sidemenu .accordion-collapse {
    border-top: none !important;
}