body {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.video-container {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    box-sizing: border-box;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    overflow: hidden;
}

#video2 {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
}
#block {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: .7;
}

.heart-button {
    position: relative;
    width: 250px;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 0;
    outline: none;
}

.heart-button:hover {
    filter: brightness(0.9);
}

.heart-button:active {
    filter: brightness(0.8);
}

.button-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 0 3px rgba(0,0,0,0.5);
}
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.heart-button {
    animation: pulse 0.5s ease-in-out infinite;
}