body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    font-family: 'Arial', sans-serif;
    color: white;
    text-align: center;
}

#bgVideo {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;
    z-index: -1;
}

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

.text-box {
    background: rgba(0, 0, 0, 0.5); /* 🔹 полупрозрачный фон */
    padding: 20px 40px;
    border-radius: 20px;
    box-shadow: 0 0 20px rgba(0,0,0,0.6);
}

h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

#number {
    font-size: 72px;
    font-weight: bold;
}

#soundBtn {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 18px;
    border: none;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: background 0.3s;
}

#soundBtn:hover {
    background: rgba(255, 255, 255, 0.4);
}