.reader-heading {
    text-align: center;
    margin-top: 38px;
}

.reader-heading h1 {
    font-size: clamp(26px, 4vw, 36px);
}

.reader-heading h2 {
    font-size: 22px;
    font-weight: 500;
}

.reader-heading p {
    color: var(--muted);
    font-size: 14px;
}

.reader-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 26px 0;
}

.disabled {
    color: var(--muted);
    background: #e5e9ef;
    cursor: default;
}

.reader-tools {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    font-size: 14px;
}

.reader-tools strong {
    margin-right: auto;
    font-size: 14px;
}

.reader-tools button {
    border: 1px solid var(--line);
    background: var(--surface);
    padding: 9px 12px;
    border-radius: 6px;
    font-size: 14px;
}

.reader-pages {
    width: min(100%, var(--reader-width, 760px));
    margin-inline: auto;
}

.reader-pages figure {
    margin: 0 0 6px;
    background: var(--surface);
}

.reader-image {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    object-fit: contain;
    color: var(--ink);
    background: #e6ebf3;
}

.reader-image:not(.image-loaded) {
    min-height: 400px;
}

.reader-pages figcaption {
    text-align: center;
    font-size: 12px;
    padding: 5px;
    color: var(--muted);
}

.chapter-end {
    text-align: center;
    color: var(--muted);
    padding: 15px;
}

body.reader-dark {
    --paper: #151923;
    --surface: #202632;
    --ink: #e5eaf2;
    --muted: #aeb9ca;
    --line: #384150;
    --blue: #93b7ff;
}

.reader-dark .site-footer, .reader-dark .site-header {
    background: #e9edf5;
    color: #172033;
}

.reader-dark .site-footer {
    --muted: #58647a;
}

.reader-dark .disabled {
    background: #343c4b;
}

.reader-dark .tag {
    background: #343c4b;
    color: #dce5f5;
}

@media (max-width: 600px) {
    .reader-nav {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .reader-nav .button {
        padding: 10px 8px;
    }

    .reader-tools {
        justify-content: flex-start;
        gap: 12px;
    }

    .reader-tools strong {
        flex-basis: 100%;
    }

    .reader-image:not(.image-loaded) {
        min-height: 280px;
    }
}