/* Core element styles */
lite-youtube {
    background-color: #000;
    position: relative;
    display: block;
    contain: content;
    background-position: center center;
    background-size: cover;
    cursor: pointer;
    max-width: 720px;
    border-radius: 16px;
    margin: 1rem auto;
    /* Canh giữa phần tử */
    overflow: hidden;
    /* Đảm bảo video ko bị tràn góc bo tròn */
}

/* Gradient shadow & title on top */
lite-youtube::before {
    content: attr(data-title);
    display: block;
    position: absolute;
    top: 0;
    background-image: linear-gradient(180deg, rgb(0 0 0 / 67%) 0%, rgb(0 0 0 / 54%) 14%, rgb(0 0 0 / 15%) 54%, rgb(0 0 0 / 5%) 72%, rgb(0 0 0 / 0%) 94%);
    height: 99px;
    width: 100%;
    font-family: "YouTube Noto", Roboto, Arial, Helvetica, sans-serif;
    color: hsl(0deg 0% 93.33%);
    text-shadow: 0 0 2px rgba(0, 0, 0, .5);
    font-size: 18px;
    padding: 25px 20px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    box-sizing: border-box;
    z-index: 2;
    /* Đảm bảo title hiển thị trên video cover */
    transition: color 0.1s cubic-bezier(0, 0, 0.2, 1);
}

lite-youtube:hover::before {
    color: #fff;
}

/* Default ratio (16:9 Landscape) */
lite-youtube::after {
    content: "";
    display: block;
    padding-bottom: calc(100% / (16 / 9));
    /* 56.25% */
}

/* Portrait Layout (9:16) for YouTube Shorts */
lite-youtube[layout="portrait"] {
    max-width: 360px;
}

lite-youtube[layout="portrait"]::after {
    padding-bottom: calc(100% / (9 / 16));
    /* 177.77% */
}

/* Iframe embedding */
lite-youtube>iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    border: 0;
    z-index: 3;
}

/* Play Button with modern, premium UX design */
lite-youtube>.lty-playbtn {
    display: block;
    width: 68px;
    height: 48px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    z-index: 4;
    border: 0;
    background: no-repeat center/contain;
    /* Red-colored play button with hover scale effect */
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 68 48'><path d='M66.52 7.74c-.78-2.93-2.49-5.41-5.42-6.19C55.79.13 34 0 34 0S12.21.13 6.9 1.55c-2.93.78-4.63 3.26-5.42 6.19C.06 13.06 0 24 0 24s.06 10.94 1.48 16.26c.78 2.93 2.49 5.41 5.42 6.19C12.21 47.87 34 48 34 48s21.79-.13 27.1-1.55c2.93-.78 4.64-3.26 5.42-6.19C67.94 34.94 68 24 68 24s-.06-10.94-1.48-16.26z' fill='%23212121' fill-opacity='0.8'/><path d='M45 24L27 14v20' fill='%23fff'/></svg>");
    transition: transform .25s cubic-bezier(0, 0, 0.2, 1), background-image .25s cubic-bezier(0, 0, 0.2, 1);
}

/* Hover & Focus state for Play Button */
lite-youtube:hover>.lty-playbtn,
lite-youtube .lty-playbtn:focus {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 68 48'><path d='M66.52 7.74c-.78-2.93-2.49-5.41-5.42-6.19C55.79.13 34 0 34 0S12.21.13 6.9 1.55c-2.93.78-4.63 3.26-5.42 6.19C.06 13.06 0 24 0 24s.06 10.94 1.48 16.26c.78 2.93 2.49 5.41 5.42 6.19C12.21 47.87 34 48 34 48s21.79-.13 27.1-1.55c2.93-.78 4.64-3.26 5.42-6.19C67.94 34.94 68 24 68 24s-.06-10.94-1.48-16.26z' fill='%23ff0000'/><path d='M45 24L27 14v20' fill='%23fff'/></svg>");
    transform: translate(-50%, -50%) scale(1.12);
}

/* State when activated (video starts playing) */
lite-youtube.lyt-activated {
    cursor: unset;
}

lite-youtube.lyt-activated::before,
lite-youtube.lyt-activated>.lty-playbtn {
    opacity: 0;
    pointer-events: none;
}

/* Screen readers accessibility */
.lyt-visually-hidden {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}