body {
    background: none !important;
}

#background-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.container {
    position: relative;
    z-index: 1;
}

.link {
    background-color: rgba(0, 0, 0, 0.3) !important;
    color: #fff !important;
}

.link:hover {
    background-color: rgba(0, 0, 0, 0.8) !important;
    color: #fff !important;
}

.mute-btn {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    border: 2px solid #fff;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 20px;
    cursor: pointer;
    z-index: 10;
    transition: background-color 0.3s;
}

.mute-btn:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

.tooltip-container {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    margin-top: 10px;
    background-color: rgba(0, 0, 0, 0.9);
    color: #fff;
    text-align: center;
    border: 1px solid #fff;
    border-radius: 6px;
    padding: 10px;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease-in-out;
    font-size: 16px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.tooltip-container:hover .tooltip-text,
.tooltip-container a:focus + .tooltip-text {
    opacity: 1;
}