div.options {
    width: 70%;
    margin-left: 5%;
    display: inline-flex;
    justify-content: flex-start;
    align-items: center;
    gap: 10px;
    padding: 10px;
    position: relative;
    //    background-color: #333;
    //    border: 1px solid #555;
    border-bottom: none;
}

div.option-group {
    display: inline-flex;
    align-items: baseline;
    position: relative;
    gap: 8px;
    margin-right: 3em;
}
div.option-group-second-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-top: 0.2em;
    margin-right: 30em;
}

span.option-text {
//    color: #ccc;
    font-size: 1em;
    font-weight: bold;
    margin-right: 5px;
}

div.option-set {
    display: inline-flex;
    position: relative;
    align-items: center;
    gap: 4px;
    background: #111;
//    padding: 10px 10px;
    padding: 0.5em 0.5em;
    border-radius: 8px;
    border: 2px solid #888;
}

button.option-button {
    margin: 0 2px;
    background: #666; // #555;
    color: white;
//    color: #eee;
    border: none;
//    border: 1px solid #555;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: background 0.2s;
//    transition: background-color 0.3s, color 0.3s;
//    font-size: 14px;
}
/* Tooltip box */
div.option-hint {
    position: absolute;
    left: 100%;
    margin-left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #4caf50;
    font-size: 0.85em;
    padding: 4px 8px;
//    border: 1px solid yellow;
//    border-radius: 40px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease-in-out;
    z-index: 10;
}

div.option-hint.option-hint-show {
    opacity: 1;
    visibility: visible;
}
button.option-button.active {
    background-color: var(--color-active);
    color: white;  // ?
    border-color: #0056b3;  //?
}
button.option-button:not(.active) {
    font-size: 80%;
//    font-style: italic;
}
button.option-button.active:hover {
    background-color: #108bff;
    color: #ddd;
    transform: scale(105%);
    transition: transform .2s;
}
button.option-button:not(.active):hover {
    background-color: #4a4a4a; /* Slightly lighter gray on hover */
    //    background: #888;
    transform: scale(105%);
    border: 1px solid #108bff;
    transition: transform .2s;
}

/*button.option-button:focus {
    outline: 2px solid #fff;   /* Visible focus ring on dark background */
    outline-offset: 2px;
}*/