/* Udemy-style video player */
.udemy-video-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

@media (min-width: 992px) {
    .udemy-video-container {
        flex-direction: row;
    }
}

.main-video-container {
    flex: 1;
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    background-color: #000;
    border-radius: 8px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

@media (min-width: 992px) {
    .main-video-container {
        padding-bottom: 40%; /* Adjusted for side-by-side layout */
    }
}

.main-video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.video-playlist {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
    max-height: 400px;
    overflow-y: auto;
}

@media (min-width: 992px) {
    .video-playlist {
        width: 320px;
        margin-top: 0;
        margin-left: 20px;
        max-height: 500px;
    }
}

.playlist-header {
    padding: 15px;
    background-color: var(--dark-color);
    color: white;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.playlist-header h4 {
    margin: 0;
    font-size: 1.1rem;
}

.playlist-count {
    background-color: var(--primary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.playlist-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.playlist-item {
    padding: 15px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background-color 0.3s ease;
}

.playlist-item:hover {
    background-color: #f0f0f0;
}

.playlist-item.active {
    background-color: rgba(39, 174, 96, 0.1);
    border-left: 4px solid var(--primary-color);
}

.playlist-item-number {
    width: 24px;
    height: 24px;
    background-color: var(--dark-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 15px;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.playlist-item.active .playlist-item-number {
    background-color: var(--primary-color);
}

.playlist-item-content {
    flex: 1;
}

.playlist-item-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.playlist-item-duration {
    font-size: 0.8rem;
    color: #666;
    display: flex;
    align-items: center;
}

.playlist-progress-container {
    flex: 1;
    height: 4px;
    background-color: #e0e0e0;
    border-radius: 2px;
    margin-right: 8px;
    overflow: hidden;
}

.playlist-progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    width: 0;
    transition: width 0.3s ease;
}

.playlist-item-play {
    color: var(--primary-color);
    margin-left: 10px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.playlist-item:hover .playlist-item-play,
.playlist-item.active .playlist-item-play {
    opacity: 1;
}

/* Video controls customization */
.main-video-container video::-webkit-media-controls-panel {
    background-image: linear-gradient(transparent, rgba(0, 0, 0, 0.5));
}