body, html {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
    color: #fff;
    text-align: center;
}

#bg-video {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    z-index: -2;
}

.overlay {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: -1;
}

.content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
}

.logo {
    width: 150px;
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5em;
    margin: 0.2em 0;
}

p {
    font-size: 1.2em;
    margin-bottom: 1em;
}

#countdown ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    font-size: 1.5em;
}

#countdown ul li {
    margin: 0 10px;
}

#countdown ul li span {
    display: block;
    font-size: 2em;
    font-weight: bold;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }

    p {
        font-size: 1em;
    }

    #countdown ul {
        flex-direction: column;
        align-items: center;
    }

    #countdown ul li {
        margin: 10px 0;
    }
}

@media (max-width: 480px) {
    .logo {
        width: 100px;
    }

    h1 {
        font-size: 1.8em;
    }

    p {
        font-size: 0.9em;
    }

    #countdown ul li span {
        font-size: 1.5em;
    }
}