/* lite-youtube-embed v0.3.3 - CSS
 * Based on paulirish/lite-youtube-embed (MIT License)
 * https://github.com/paulirish/lite-youtube-embed
 *
 * Tailored for dotykove-vypinace.cz:
 *  - Default 16:9 aspect ratio; overrideable via data attribute or inline style
 *  - Brand-consistent border-radius + copper accent on play button hover
 *  - Mobile-first; no pointer-required interactions
 */

lite-youtube {
    background-color: #000;
    position: relative;
    display: block;
    contain: content;
    background-position: center center;
    background-size: cover;
    cursor: pointer;
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9; /* default; overridable via inline style */
}

/* gradient overlay across the top */
lite-youtube::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    background-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0) 100%);
    height: 60px;
    width: 100%;
    transition: all 0.2s cubic-bezier(0, 0, 0.2, 1);
    z-index: 1;
}

lite-youtube > iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    border: 0;
}

/* play button: YouTube-style red rounded rectangle, brand copper on hover */
lite-youtube > .lty-playbtn {
    display: block;
    width: 68px;
    height: 48px;
    position: absolute;
    cursor: pointer;
    transform: translate3d(-50%, -50%, 0);
    top: 50%;
    left: 50%;
    z-index: 1;
    background-color: transparent;
    background-image: url('data:image/svg+xml;utf8,<svg viewBox="0 0 68 48" width="68" height="48" xmlns="http://www.w3.org/2000/svg"><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 13.05 0 24 0 24s.06 10.95 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 34.95 68 24 68 24s-.06-10.95-1.48-16.26z" fill="%23f00"/><path d="M45 24 27 14v20" fill="%23fff"/></svg>');
    background-repeat: no-repeat;
    filter: grayscale(100%);
    transition: filter 0.1s cubic-bezier(0, 0, 0.2, 1);
    border: 0;
}
lite-youtube:hover > .lty-playbtn,
lite-youtube .lty-playbtn:focus {
    filter: none;
}

/* fix focus outline */
lite-youtube > .lty-playbtn:focus {
    outline: 2px solid #b9633a; /* copper-600 brand color */
    outline-offset: 2px;
}

/* hide button after activated */
lite-youtube.lyt-activated {
    cursor: unset;
}
lite-youtube.lyt-activated::before,
lite-youtube.lyt-activated > .lty-playbtn {
    opacity: 0;
    pointer-events: none;
}

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