* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #111;
    color: #fff;
    font-family: Arial, sans-serif;
}

.slide-toolbar {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 10px;
    background: #151515f5;
}

.slide-toolbar h1 {
    margin: 0 10px;
    font-size: 15px;
}

.slide-toolbar a {
    color: #fff;
}

.slide-toolbar button,
.slide-video-close {
    padding: 8px 12px;
    border: 1px solid #666;
    border-radius: 5px;
    background: #252525;
    color: #fff;
    cursor: pointer;
}

.slide-toolbar button:focus-visible,
.slide-link:focus-visible,
.slide-video-button:focus-visible,
.slide-video-close:focus-visible {
    outline: 3px solid #55baff;
    outline-offset: 2px;
}

.presentation-slide {
    max-width: 1200px;
    margin: 20px auto;
    scroll-margin-top: 90px;
}

.slide-page {
    position: relative;
}

.slide-page > img {
    display: block;
    width: 100%;
    height: auto;
}

.slide-link,
.slide-video-button {
    position: absolute;
    z-index: 2;
    display: block;
}

.slide-link:hover,
.slide-video-button:hover {
    box-shadow: inset 0 0 0 3px #55baff;
}

.slide-video-button {
    border: 0;
    padding: 0;
    margin: 0;
    background: transparent;
    cursor: pointer;
}

.slide-video-layer {
    position: absolute;
    inset: 0;
    z-index: 10;
    background: #000c;
}

.slide-video-layer[hidden] {
    display: none;
}

.slide-video-panel {
    position: absolute;
    left: 50%;
    top: 50%;
    width: min(90%, 1000px);
    aspect-ratio: 16 / 9;
    transform: translate(-50%, -50%);
    background: #000;
    box-shadow: 0 12px 35px #000a;
}

.slide-video-close {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: #fff;
    color: #111;
    font-size: 28px;
    line-height: 1;
}

.slide-video-player,
.slide-video-player iframe {
    width: 100%;
    height: 100%;
}

.slide-video-player iframe {
    display: block;
    border: 0;
}

.slide-help {
    text-align: center;
    font-size: 13px;
    color: #ccc;
}

.slide-mode .presentation-slide {
    display: none;
    margin: 0;
    max-width: none;
}

.slide-mode .presentation-slide.is-active {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100dvh - 85px);
}

.slide-mode .slide-page {
    max-width: 100%;
    max-height: calc(100dvh - 85px);
    width: auto;
}

.slide-mode .slide-page > img {
    width: auto;
    height: auto;
    max-width: 100vw;
    max-height: calc(100dvh - 85px);
}

.slide-mode .slide-help {
    display: none;
}

body:fullscreen {
    overflow: auto;
}

.slide-document {
    min-height: 45vh;
    padding: 80px 24px;
    background: #fff;
    color: #222;
    text-align: center;
}

.slide-document a {
    color: #0755af;
}

@media (max-width: 600px) {
    .slide-toolbar {
        gap: 5px;
    }

    .slide-toolbar h1 {
        width: 80%;
        font-size: 13px;
        text-align: center;
    }

    .slide-toolbar button {
        padding: 7px;
    }

    .slide-toolbar output {
        font-size: 13px;
    }

    .presentation-slide {
        margin: 12px 0;
    }

    .slide-video-panel {
        width: 96%;
    }

    .slide-video-close {
        top: 6px;
        right: 6px;
        width: 38px;
        height: 38px;
        font-size: 24px;
    }
}