.vjs-progress-holder {
    position: relative;
}

.vjs-marker-dot {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #fff;
    border: 2px solid rgba(0, 0, 0, 0.5);
    margin-left: -5px;
    cursor: pointer;
    z-index: 1;
}

.vjs-marker-dot:hover {
    background-color: #007aff;
    border-color: #000;
    z-index: 2;
}

.vjs-marker-label {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.85);
    color: #fff;
    font-size: 1rem;
    line-height: 1.2;
    white-space: nowrap;
    padding: 3px 6px;
    border-radius: 3px;
    pointer-events: none;
}

.vjs-marker-dot:hover .vjs-marker-label {
    display: block;
}