/* :::::: toggle button :::::: */
.drawer-check {
    display: none;
}

.drawer-open {
    cursor: pointer;

    width: 34px;
    height: 34px;
    border-radius: 2px;
    background: var(--bs-verylight-primary-color);
    position: relative;
}

.drawer-open:hover {
    background: var(--bs-light-primary-color);
}

.drawer-open span,
.drawer-open::before,
.drawer-open::after {
    content: "";
    position: absolute;
    top: 16px;
    left: 6px;
    width: 24px;
    border-bottom: 2px solid white;
}

.drawer-open::before {
    transform: translateY(-8px);
}

.drawer-open::after {
    transform: translateY(8px);
}

.drawer-close-button {
    font-size: 1.4rem;
}

.drawer-close {
    z-index: 1;
    inset: 0;
    pointer-events: none;
    transition: background .6s;
    position: fixed;
}

.drawer-check:checked ~ .drawer-close {
    pointer-events: auto;
    background: rgba(0, 0, 0, .3);
}

/* :::::: drawer menu :::::: */
.drawer-menu {
    z-index: 1;
    position: fixed;
    overflow: auto;
    top: 0;
    left: 0;
    width: 300px;
    height: 100%;
    margin: 0;
    padding: 10px;
    box-sizing: border-box;
    background: rgba(0, 0, 0, .8);
    transform: translateX(-100%);
    transition: transform .6s cubic-bezier(0.215, 0.61, 0.355, 1);
    color: white;
    display: flex;
    flex-direction: column;
}

.drawer-menu > .drawer-title {
    display: flex;
    justify-content: space-between;
}

.drawer-menu > .drawer-title > * {
    font-family: "Ubuntu Condensed", sans-serif;
    font-weight: 400;
    letter-spacing: .1em;
}

.drawer-menu > .drawer-footer {
    height: 100%;
    flex-grow: 1;
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
}

.drawer-menu > .drawer-footer > .drawer-footer-link {
    margin: 50px 0 5px;
    --bs-link-color-rgb: 255, 255, 255;
}

.drawer-menu > .drawer-footer > .drawer-footer-link:hover {
    --bs-link-color-rgb: 219, 219, 219;
}

.drawer-menu ul {
    margin: 0;
    padding: 0;
}

.drawer-menu li {
    line-height: 1.4;
    list-style: none;
}

/* 子要素の無い要素はスペースにする */
.drawer-menu li:empty {
    height: 1rem;
}

.drawer-menu li:not(:first-child) {
    border-top: 1px solid rgba(255, 255, 255, .6);
}

.drawer-menu li > a {
    display: flex;
    align-items: center;
    padding: 1em 2em;
    color: white;
    text-decoration: inherit;
    transition: background .6s;
    cursor: pointer;
}

/* Bootstrapによる上書き抑止 */
a:not([href]):not([class]),
a:not([href]):not([class]):hover {
    color: white;
}

.drawer-menu li > a:hover {
    background: black;
}

.drawer-check:checked ~ .drawer-menu {
    transform: none;
}

@media (min-width: 992px) {
    .drawer-menu {
        transform: none;
        position: sticky;
    }

    .drawer-open {
        display: none;
    }

    .drawer-close-button {
        display: none;
    }

    .drawer-close {
        display: none;
    }
}