body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

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

.video-player {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 1s ease;
}

.video-player.active {
    opacity: 1;
}

.description-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 10;
}

.description {
    color: white;
    text-align: center;
    padding: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.navigation-buttons {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    transform: translateY(-50%);
    z-index: 20;
}

.nav-btn {
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    padding: 10px 15px;
    font-size: 24px;
    cursor: pointer;
    transition: background 0.3s ease;
    opacity: 0.7;
}

.nav-btn:hover {
    background: rgba(0,0,0,0.8);
    opacity: 1;
}