#bottom_nav {
    position: absolute;
    left: 50%; transform: translate(-50%,0);
    bottom: 0; 
    display: flex;
    flex-direction: column;
    justify-content: start;
    align-items: center;
    z-index: 1;
}

.control_bar {
    box-sizing: border-box;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background-color: rgba(34, 34, 34, 0.5);
    border-radius: 2.5rem;
    padding: 0.5rem;
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
}

.control_bar button {
    position: relative;
    width: 4rem; height: 4rem;
    border-radius: 2.0rem;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 0;
}

.control_bar button img {
    position: absolute;
    left: 0; top: 0;
    pointer-events: none;
    width: 100%; height: 100%;
    border: 0;
}

.control_bar button.sound .on,
.control_bar button.sound .off {
    opacity: 0;
    transition: opacity var(--transition-duration);
}

body.sound .control_bar button.sound .on,
body:not(.sound) .control_bar button.sound .off {
    opacity: 1;
}

.control_bar button.res svg g {
    opacity: 0;
    transition: opacity var(--transition-duration);
}

body.q4k .control_bar button.res svg .state1,
body:not(.q4k) .control_bar button.res svg .state2 {
    opacity: 1;
}

.control_bar button.sound {
    position: relative;
    z-index: 1;
}

.control_bar button.dictor {
    position: absolute;
    right: 4.5rem; 
    transform-origin: left;
    transform: translateX(100%) scaleX(1);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 1.6rem;
    line-height: 1.6rem;
    color: white;
    text-align: right;
    width: auto;
    padding: 0 1rem 0 6rem;
    margin-bottom: 1rem;
    z-index: 0;
    transition: 
        transform var(--transition-duration),
        opacity var(--transition-duration);
}

.control_bar button.dictor.hidden {
    pointer-events: none;
    transform: translateX(100%) scaleX(0.5);
}

@media (pointer: coarse) {
    .control_bar button.dictor {
        display: none;
    }
}

.scene_selector {
    box-sizing: border-box;
    /* backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px); */
    background-color: transparent;
    display: flex;
    flex-direction: row;
}

.scene_selector button {
    position: relative;
    width: 1.8rem; height: 2.5rem;
    background-color: transparent;
    padding: 0;
}

.scene_selector button::after {
    content: '';
    position: absolute;
    left: 50%; top: 50%; transform: translate(-50%,-50%);
    width: 0.6rem; height: 0.6rem;
    border-radius: 0.3rem;
    background-color: rgba(255, 255, 255, 1);
    box-shadow: 0 0 3px rgba(0, 0, 0, 0.8);
    padding: 0;
    transition: background-color var(--transition-duration);
}

.scene_selector button.visited::after {
    background-color: #F5503C;
}

.scene_selector button.active::before {
    content: '';
    position: absolute;
    box-sizing: border-box;
    left: 50%; top: 50%; transform: translate(-50%,-50%);
    width: 1.2rem; height: 1.2rem;
    pointer-events: none;
    border: 0.3rem solid white;
    border-radius: 1rem;
}

.scene_title {
    position: absolute;
    left: 50%; bottom: 100%; transform: translate(-50%,-1.4rem);
    border-radius: 2rem;
    background-color: rgba(0, 0, 0, 0.8);
    opacity: 1;
    transition: opacity var(--transition-duration);
    color: rgba(255, 255, 255, 1);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 1.4rem;
    padding: 0.7rem 1.8rem;
    white-space: nowrap;
}

.scene_title::after {
        content: '';
        position: absolute;
        left: 50%; top: 100%; transform: translate(-50%,0);
        width: 0px; height: 0px;
        border-style: solid;
        border-width: 0.8rem 0.8rem 0 0.8rem;
        border-color: rgba(0, 0, 0, 0.8) transparent transparent transparent;
}

@media (width < 500px) {
    .scene_selector button { width: 1.5rem; }
}