/* ===== BACK BUTTON STYLES ===== */

.back-btn {
    position: fixed;
    left: 1vw;
    top: 50vh;
    -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
            transform: translateY(-50%);
    height: 85vh;
    -webkit-box-shadow: 0 0 0 2px var(--color-accent);
            box-shadow: 0 0 0 2px var(--color-accent);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -ms-flex-wrap: nowrap;
        flex-wrap: nowrap;
    -ms-flex-line-pack: center;
        align-content: center;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    -webkit-transition: all 0.15s;
    -o-transition: all 0.15s;
    transition: all 0.15s;
    z-index: 10000;
}

.back-btn:hover {
    -webkit-box-shadow: 0 0 0 2px var(--color-black);
            box-shadow: 0 0 0 2px var(--color-black);
    background: var(--color-accent);
    -webkit-transition: all 0.15s;
    -o-transition: all 0.15s;
    transition: all 0.15s;
}

.back-btn:hover img {
    -webkit-filter: brightness(0);
            filter: brightness(0);
    -webkit-transition: all 0.15s;
    -o-transition: all 0.15s;
    transition: all 0.15s;
}

.back-btn:hover h6 {
    color: var(--color-black);
    -webkit-transition: all 0.15s;
    -o-transition: all 0.15s;
    transition: all 0.15s;
}

.back-btn img.icon {
    -webkit-transform: rotate(180deg);
        -ms-transform: rotate(180deg);
            transform: rotate(180deg);
    width: 100%;
    margin-top: min(1vh, 1vw);
}

.back-btn h6 {
    margin: 0;
    -webkit-writing-mode: vertical-rl;
        -ms-writing-mode: vertical-rl;
            writing-mode: vertical-rl;
    padding: 1vw 0;
    font-size: 2vh;
    line-height: 0.8;
    color: var(--color-accent);
    font-weight: 700;
    -webkit-transition: all 0.15s;
    -o-transition: all 0.15s;
    transition: all 0.15s;
}