body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f2f2f2;
}

.yt-header {
    background: #ff0000;
    color: white;
    padding: 12px 20px;
    font-size: 24px;
    font-weight: bold;
}

.yt-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    padding: 20px;
}

.thumb-box {
    text-decoration: none;
    color: #000;
}

.thumb-box img {
    width: 100%;
    border-radius: 10px;
}

.thumb-title {
    margin-top: 8px;
    font-size: 16px;
    font-weight: 600;
}

.watch-container {
    display: flex;
    padding: 20px;
}

.watch-left {
    flex: 3;
    padding-right: 20px;
}

.player-box iframe {
    width: 100%;
    height: 420px;
    border-radius: 12px;
}

.watch-title {
    font-size: 22px;
    margin-top: 14px;
    font-weight: bold;
}

.watch-right {
    flex: 1.2;
    overflow-y: auto;
    max-height: 80vh;
}

.side-video {
    display: flex;
    margin-bottom: 12px;
    text-decoration: none;
    color: black;
}

.side-video img {
    width: 130px;
    border-radius: 8px;
}

.side-info {
    padding-left: 10px;
}

.side-title {
    font-size: 15px;
    font-weight: 600;
}