.switcher {
    width: 48px;
    height: 24px;
    border: none;
    outline: none;
    background: #ededed;
    border-radius: 999px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
    padding: 0;
    display: flex;
    align-items: center;
}

.switcher__circle {
    position: absolute;
    left: 4px;
    top: 4px;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    transition: left 0.3s, background 0.3s;
}

.switcher--on {
    background: #91cf4f;
    transition: background 0.3s;
}

.switcher--on .switcher__circle {
    left: 28px;
    background: #fff;
    transition: left 0.3s, background 0.3s;
}