:root {
    color-scheme: light dark;
    /* Override these in a deck's own index.html (in a <style> block after
       the shared/deck.css <link>) to change that deck's text size/spacing
       without touching the shared file. */
    --base-font-size: 25px;
    --base-line-height: 1.35;
}
html,
body {
    margin: 0;
    height: 100%;
    background: #16171a;
    font: var(--base-font-size) / var(--base-line-height) system-ui, sans-serif;
    color: #eee;
}
#deck {
    position: relative;
    height: 100%;
    overflow: hidden;
}
.slide {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8vh 10vw;
    box-sizing: border-box;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease;
}
.slide.active {
    opacity: 1;
    visibility: visible;
}
.slide h1 {
    font-size: 3em;
    line-height: 1.15;
    margin: 0 0 0.3em;
}
.slide h2 {
    font-size: 2em;
    line-height: 1.15;
    margin: 0 0 0.5em;
    color: #aab;
}
.slide h3 {
    line-height: 1.15;
    color: #aab;
}
.slide p {
    max-width: 40em;
}
.slide blockquote {
    max-width: 40em;
    margin: 0;
    padding-left: 1em;
    border-left: 3px solid #556;
    color: #ccd;
}
.slide pre {
    text-align: left;
    background: #0d0e10;
    padding: 1em 1.4em;
    border-radius: 8px;
    overflow-x: auto;
    max-width: 60vw;
}
.slide code {
    background: #0d0e10;
    padding: 0.1em 0.4em;
    border-radius: 4px;
}
.slide pre code {
    background: none;
    padding: 0;
}
.slide img {
    max-width: 80vw;
    max-height: 60vh;
}
.slide table {
    border-collapse: collapse;
}
.slide th,
.slide td {
    border: 1px solid #445;
    padding: 0.4em 0.8em;
}
.slide a {
    color: #8ab4ff;
}

.nav-zone {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 8vw;
    min-width: 40px;
    cursor: pointer;
    z-index: 10;
}
#zone-prev {
    left: 0;
}
#zone-next {
    right: 0;
}

.arrow {
    position: fixed;
    bottom: 24px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    user-select: none;
    pointer-events: none;
    z-index: 20;
}
#arrow-prev {
    left: 24px;
}
#arrow-next {
    right: 24px;
}

#counter {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font:
        14px system-ui,
        sans-serif;
    color: #888;
    z-index: 20;
    pointer-events: none;
}

.hub-link {
    position: fixed;
    top: 16px;
    left: 16px;
    font:
        14px system-ui,
        sans-serif;
    color: #888;
    text-decoration: none;
    z-index: 20;
}
.hub-link:hover {
    color: #ccc;
}