/* Shared reader styles: the settings panel, font/size/theme controls, the
   pagination system and the continuous reader. Loaded after the app's own
   stylesheet. */

/* Reading Settings Panel */
.reading-settings-panel {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    width: 360px;
    max-width: 90vw;
    background: var(--surface);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.reading-settings-panel:not(.hidden) {
    transform: translateX(0);
}

.reading-settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-color);
}

.reading-settings-header h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin: 0;
}

.reading-settings-close {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px 8px;
    transition: color 0.2s;
}

.reading-settings-close:hover {
    color: var(--primary-color);
}

.reading-settings-section {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.reading-settings-section:last-child {
    border-bottom: none;
}

.reading-settings-section h4 {
    font-size: 1rem;
    color: var(--primary-color);
    margin: 0 0 16px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Font Selection */
.font-choices {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 8px;
}

.font-choice {
    background: var(--surface);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.2s;
}

.font-choice:hover {
    border-color: var(--secondary-color);
    background: rgba(138, 46, 46, 0.05);
}

.font-choice.active {
    border-color: var(--secondary-color);
    background: rgba(138, 46, 46, 0.08);
}

.font-choice[data-font="georgia"] {
    font-family: var(--reading-font-serif);
}

.font-choice[data-font="system"] {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.font-choice[data-font="figtree"] {
    font-family: 'Figtree', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.font-labels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    text-align: center;
}

.font-labels span {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Text Size Control */
.size-control {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.size-btn {
    background: var(--surface);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 44px;
}

.size-btn:hover {
    border-color: var(--secondary-color);
    background: rgba(138, 46, 46, 0.05);
}

.size-slider-container {
    flex: 1;
}

.size-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
}

.size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
}

.size-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
    border: none;
}

.size-value {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 600;
}

/* Theme Selection */
.theme-choices {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.theme-choice {
    background: var(--surface);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.theme-choice:hover {
    border-color: var(--secondary-color);
    background: rgba(138, 46, 46, 0.05);
}

.theme-choice.active {
    border-color: var(--secondary-color);
    background: rgba(138, 46, 46, 0.08);
}

.theme-preview {
    width: 100%;
    height: 60px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.theme-preview-light {
    background: var(--paper);
}

.theme-preview-dark {
    background: var(--reading-theme-dark-bg);
}

.theme-choice span {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 600;
}

/* Font family for pagination containers */
.pagination-page-container[data-font="georgia"],
.pagination-page-container[data-font="georgia"] .side-by-side-cell,
.pagination-page-container[data-font="georgia"] p {
    font-family: var(--reading-font-serif);
    font-optical-sizing: auto;
}

.pagination-page-container[data-font="system"],
.pagination-page-container[data-font="system"] .side-by-side-cell,
.pagination-page-container[data-font="system"] p {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.pagination-page-container[data-font="figtree"],
.pagination-page-container[data-font="figtree"] .side-by-side-cell,
.pagination-page-container[data-font="figtree"] p {
    font-family: 'Figtree', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

@media (max-width: 768px) {
    .reading-settings-panel {
        width: 100%;
        max-width: 100%;
    }

    .reading-progress-bar {
        height: 32px;
    }

    .next-chapter-container {
        margin-bottom: 60px;
    }
}

/* ============================================
   PAGINATION SYSTEM FOR CHAPTER READING
   ============================================ */

/* Pagination wrapper - contains all pagination elements */
.pagination-wrapper {
    position: relative;
    width: 100%;
    min-height: 400px;
    overflow: hidden;
    overscroll-behavior: contain;
}

/* Page container - holds the current page content */
.pagination-page-container {
    position: relative;
    width: 100%;
    height: 100%;
    max-height: 100%;
    overflow: hidden;
    overscroll-behavior: contain;
    /* font-size is set via JavaScript reading settings - default removed to allow inline styles to work */
    line-height: 1.75;
    color: var(--text-color);
}

/* Prevent body/html scrolling when pagination is active */
html.pagination-active,
body.pagination-active {
    overflow: hidden;
}

/* Temporary measuring div (hidden) */

/* Page-turn buttons. Touch: swipe is the control, so the buttons are
   visually hidden and kept only for screen readers. Mouse: see below. */
.pagination-nav-button {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

/* Comfortable reading width */
@media (min-width: 900px) {
    .pagination-wrapper {
        max-width: 800px;
    }
}

/* Mouse: full-height click strips in the margins beside the text, visible at
   rest. The wrapper always leaves room for them, so they never cover text. */
@media (hover: hover) and (pointer: fine) {
    .pagination-wrapper {
        --nav-strip: 64px;
        --nav-gap: 8px;
        overflow: visible;
        max-width: min(800px, calc(100vw - 2 * (var(--nav-strip) + var(--nav-gap)) - 32px));
        margin: 0 auto;
    }

    .pagination-nav-button {
        top: 0;
        bottom: 0;
        width: var(--nav-strip);
        height: auto;
        margin: 0;
        clip-path: none;
        z-index: 20;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
        background: transparent;
        color: var(--text-color);
        font-size: 36px;
        font-weight: 300;
        cursor: pointer;
        opacity: 0.35;
        transition: opacity 0.15s ease, background-color 0.15s ease;
    }

    .pagination-nav-button:hover,
    .pagination-nav-button:focus-visible {
        opacity: 1;
        background-color: rgba(0, 0, 0, 0.04);
    }

    [data-theme="dark"] .pagination-nav-button {
        color: var(--reading-theme-dark-text);
    }

    [data-theme="dark"] .pagination-nav-button:hover,
    [data-theme="dark"] .pagination-nav-button:focus-visible {
        background-color: rgba(255, 255, 255, 0.06);
    }

    .pagination-nav-prev {
        left: calc(-1 * (var(--nav-strip) + var(--nav-gap)));
    }

    .pagination-nav-next {
        right: calc(-1 * (var(--nav-strip) + var(--nav-gap)));
    }
}

/* One-time page-turn hint (see showPageTurnHintOnce) */
.page-turn-hint {
    position: fixed;
    left: 50%;
    bottom: 64px;
    transform: translateX(-50%);
    z-index: 25;
    max-width: calc(100% - 32px);
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--ink, #222);
    color: var(--paper, #fff);
    font-size: 0.9rem;
    text-align: center;
    pointer-events: none;
    animation: page-turn-hint-in 0.3s ease-out;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .page-turn-hint {
    background: var(--reading-theme-dark-text);
    color: var(--reading-theme-dark-bg);
}

.page-turn-hint-out {
    opacity: 0;
}

@keyframes page-turn-hint-in {
    from { opacity: 0; transform: translate(-50%, 8px); }
}

/* Touch: the page slides a little and back, twice, to show it swipes. */
.hint-nudge .pagination-page-container {
    animation: page-turn-hint-nudge 1.4s ease-in-out 0.4s 2;
}

@keyframes page-turn-hint-nudge {
    0%, 60%, 100% { transform: translateX(0); }
    30% { transform: translateX(-32px); }
}

@media (prefers-reduced-motion: reduce) {
    .hint-nudge .pagination-page-container,
    .page-turn-hint {
        animation: none;
    }
}

/* Touch swipe: the neighboring page rendered beside the current one (see
   setupTouchGestures). While swiping, the wrapper stops clipping so both
   pages slide edge to edge; the viewport still clips them. */
.pagination-wrapper.is-swiping {
    overflow: visible;
}

.pagination-page-container.pagination-neighbor {
    position: absolute;
    pointer-events: none;
}

/* Keep a sideways trackpad swipe from becoming browser back/forward. */
html.pagination-active {
    overscroll-behavior-x: none;
}

/* Ensure pagination content inherits theme styles */
.pagination-page-container p {
    margin-bottom: 1em;
}

/* Allow seamless text continuation across pages */
.pagination-page-container p.paragraph-continuation {
    margin-top: 0;
    padding-top: 0;
}

.pagination-page-container h1,
.pagination-page-container h2,
.pagination-page-container h3,
.pagination-page-container h4,
.pagination-page-container h5,
.pagination-page-container h6 {
    color: var(--primary-color);
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    font-weight: 600;
}

.pagination-page-container ul,
.pagination-page-container ol {
    margin: 1em 0;
    padding-left: 2em;
}

.pagination-page-container li {
    margin-bottom: 0.5em;
}

.pagination-page-container strong {
    font-weight: 600;
    color: inherit;
}

.pagination-page-container em {
    font-style: italic;
}

.pagination-page-container code {
    font-family: 'Courier New', monospace;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

[data-theme="dark"] .pagination-page-container {
    color: var(--reading-theme-dark-text);
}

[data-theme="dark"] .pagination-page-container p,
[data-theme="dark"] .pagination-page-container .side-by-side-cell {
    color: var(--reading-theme-dark-text);
}

[data-theme="dark"] .pagination-page-container h1,
[data-theme="dark"] .pagination-page-container h2,
[data-theme="dark"] .pagination-page-container h3,
[data-theme="dark"] .pagination-page-container h4,
[data-theme="dark"] .pagination-page-container h5,
[data-theme="dark"] .pagination-page-container h6 {
    color: var(--reading-theme-dark-text);
}

[data-theme="dark"] .pagination-page-container blockquote {
    border-left-color: var(--reading-theme-dark-border);
}

[data-theme="dark"] .pagination-page-container code {
    background-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .pagination-page-container .side-by-side-cell.original {
    border-right-color: var(--reading-theme-dark-border) !important;
}

.pagination-page-container blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1em;
    margin: 1em 0;
    font-style: italic;
    color: var(--text-secondary);
}

/* Accessibility: Focus styles for keyboard navigation */
.pagination-nav-button:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Hide scrollbar for pagination container */
.pagination-page-container::-webkit-scrollbar {
    display: none;
}

.pagination-page-container {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Ensure smooth page transitions */
.pagination-page-container * {
    transition: none;
}

/* Preserve side-by-side grid layout inside pagination */
/* Use !important to override mobile breakpoint since side-by-side is only available on wide screens */
.pagination-page-container .side-by-side-headers {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 2rem !important;
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e8e8e8;
}

.pagination-page-container .side-by-side-row {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 2rem !important;
    align-items: start;
    margin-bottom: 0;
}

.pagination-page-container .side-by-side-cell {
    min-width: 0;
    line-height: 1.75;
}

.pagination-page-container .side-by-side-cell.original {
    padding-right: 1rem !important;
    border-right: 1px solid var(--border-light) !important;
    border-bottom: none !important;
    padding-bottom: 0 !important;
}

.pagination-page-container .side-by-side-cell.modern {
    padding-left: 1rem !important;
    padding-top: 0 !important;
}

/* Continuous Reader and Library */
.library-section,
.continuous-reader-section {
    width: 100vw;
    position: relative;
    left: 50%;
    margin-left: -50vw;
    background: var(--card-background);
    min-height: calc(100vh - 51px);
}

.library-section {
    box-sizing: border-box;
    min-height: calc(100vh - 76px);
    padding: 3.25rem max(1.25rem, calc((100vw - 1120px) / 2)) 4rem;
    background: var(--paper);
}

.library-header,
.library-shelf { margin: 0 auto 2.75rem; max-width: 1120px; }
.library-eyebrow { margin: 0 0 .55rem; color: var(--primary-color); font-size: .76rem; font-weight: 750; letter-spacing: .1em; }
.library-header h1 { margin-bottom: .5rem; font-family: var(--font-serif); font-size: clamp(2rem, 4vw, 2.85rem); }
.library-intro { color: var(--text-light); font-size: 1.08rem; }
.library-shelf h2 { margin-bottom: 1rem; font-family: var(--font-serif); font-size: 1.45rem; }
.library-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem; }
.library-card { display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 1.1rem; min-height: 180px; max-width: 520px; padding: 1rem; border: 1px solid var(--border-light); border-radius: 12px; background: var(--card-background); box-shadow: 0 2px 8px rgba(25, 40, 52, .05); cursor: pointer; transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.library-card-link { color: inherit; text-decoration: none; }
.library-card-link:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.library-card:hover { border-color: color-mix(in srgb, var(--primary-color) 35%, var(--border-light)); box-shadow: 0 8px 22px rgba(25, 40, 52, .1); transform: translateY(-1px); }
.library-card-cover-frame { display: flex; align-items: flex-start; min-width: 0; }
.library-card .book-card-cover { width: 108px; height: auto; margin: 0; padding: 10%; }
.library-card .book-card-cover-title { font-size: .85rem; }
.library-card-body { min-width: 0; display: flex; flex-direction: column; align-items: flex-start; }
.library-card-meta { display: flex; width: 100%; justify-content: space-between; gap: .75rem; white-space: nowrap; color: var(--text-light); font-size: .76rem; font-weight: 650; letter-spacing: .03em; text-transform: uppercase; }
.library-card h3 { margin: .35rem 0 .2rem; color: var(--ink); font-family: var(--font-serif); font-size: 1.25rem; line-height: 1.22; }
.library-card-author, .library-card-location { margin: 0; color: var(--text-light); font-size: .9rem; }
.library-card-location { overflow: hidden; max-width: 100%; margin-top: .5rem; text-overflow: ellipsis; white-space: nowrap; }
.library-card-foot { width: 100%; margin-top: auto; padding-top: .75rem; }
.library-card-progress { width: 100%; height: 5px; margin: 0 0 .85rem; overflow: hidden; border-radius: 99px; background: var(--rule); }
.library-card-progress span { display: block; height: 100%; min-width: 4px; border-radius: inherit; background: var(--accent); }
.library-card-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .75rem; }
.library-card-actions button { cursor: pointer; }
.library-read-action { display: inline-flex; align-items: center; gap: .45rem; border: 0; border-radius: var(--radius-control); background: var(--accent); color: var(--on-accent); padding: .54rem .72rem; font: inherit; font-size: .87rem; font-weight: 650; }
.library-read-action:hover { background: var(--accent-hover); }
.library-mark-unfinished { border: 0; background: transparent; color: var(--primary-color); padding: .35rem 0; font: inherit; font-size: .82rem; font-weight: 650; }
.library-empty { max-width: 520px; margin: 4rem auto; padding: 2rem; border: 1px dashed var(--border-light); border-radius: 12px; background: rgba(255,255,255,.72); text-align: center; }

@media (max-width: 599px) {
    .library-section { padding-top: 2.25rem; }
    .library-card { grid-template-columns: 82px minmax(0, 1fr); gap: .85rem; min-height: 150px; padding: .85rem; }
    .library-card .book-card-cover { width: 82px; }
    .library-card h3 { font-size: 1.1rem; }
}

.book-read-btn { display: inline-flex; align-items: center; gap: .55rem; margin-top: 1rem; padding: .65rem 1rem; border: 0; border-radius: var(--radius-control); background: var(--accent); color: var(--on-accent); font: inherit; font-weight: 650; cursor: pointer; }
.book-read-btn:hover { background: var(--accent-hover); }
.book-read-btn-arrow { font-size: 1.15em; line-height: 1; }

/* Focused reader chrome: a quiet paper toolbar in the light theme (matching
   the site header); the dark theme gives it its own colours below. */
/* The reader's document must not scroll: the toolbar and footer are fixed,
   so any scroll slides the page's first lines under the toolbar. 100svh, not
   100vh (iOS's 100vh is the large viewport; see the body note), and no
   .main-content bottom padding below the reader. */
.continuous-reader-section { --reader-chrome-height: 59px; min-height: 100svh; padding-top: var(--reader-chrome-height); }
body.on-reader-page .main-content { padding-bottom: 0; }
.continuous-reader-chrome { position: fixed; z-index: 1000; top: 0; left: 0; right: 0; height: var(--reader-chrome-height); min-height: var(--reader-chrome-height); display: flex; align-items: center; gap: 1rem; padding: 10px 18px; box-sizing: border-box; border-bottom: 1px solid var(--rule); background: var(--paper); color: var(--ink); }
.reader-toolbar-left { min-width: 0; flex: 1 1 0; display: flex; align-items: center; gap: 12px; }
.reader-back-btn { flex: 0 0 auto; border: 1px solid var(--rule-strong); border-radius: 7px; background: transparent; color: inherit; padding: 7px 13px; font-size: 1rem; line-height: 1; cursor: pointer; }
.reader-back-btn:hover, .reader-back-btn:focus-visible { background: var(--paper-deep); }
.reader-title-wrap { min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.reader-chapter-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: inherit; font-family: var(--font-serif); font-size: 1rem; font-weight: 600; }
.reader-book-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--ink-muted); font-size: .76rem; }
.reader-toolbar-right { flex: 0 0 auto; display: flex; align-items: center; gap: 8px; }
.reader-toolbar-btn { border: 1px solid var(--rule-strong); border-radius: 7px; background: transparent; color: inherit; font: inherit; cursor: pointer; }
.reader-toolbar-btn:hover, .reader-toolbar-btn:focus-visible { background: var(--paper-deep); }
.reader-icon-btn { display: grid; place-items: center; width: 38px; height: 38px; padding: 0; }
.reader-icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.reader-mode-choices { display: grid; gap: .55rem; }
.reader-mode-choices button { border: 1px solid var(--border-color); border-radius: 7px; background: var(--card-background); color: var(--text-color); padding: .7rem .8rem; font: inherit; text-align: left; cursor: pointer; }
.reader-mode-choices button:hover:not(:disabled), .reader-mode-choices button:focus-visible:not(:disabled) { border-color: var(--primary-color); background: var(--hover-background); }
.reader-mode-choices button.active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--card-background)); color: var(--accent); font-weight: 650; }
.reader-mode-choices button:disabled { cursor: not-allowed; opacity: .45; }
.reader-mode-help { margin-top: .75rem; color: var(--text-light); font-size: .82rem; line-height: 1.4; }
.reader-panel { position: fixed; z-index: 1002; top: 0; right: 0; bottom: 0; width: min(390px, 100vw); overflow: auto; padding: 1.25rem; box-sizing: border-box; border-left: 1px solid var(--rule); background: var(--surface); box-shadow: -12px 0 36px rgba(43,38,34,.16); }
.reader-panel-header { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-light); }
.reader-panel-header h2 { margin: 0; font-family: var(--font-serif); font-size: 1.3rem; }
.reader-panel-close { border: 0; background: transparent; color: var(--text-color); font-size: 1.25rem; cursor: pointer; }
#reader-toc-list { display: grid; gap: .2rem; padding: 1rem 0; }
#reader-toc-list button { text-align: left; border: 0; border-radius: 6px; background: transparent; color: var(--text-color); padding: .75rem; font: inherit; cursor: pointer; }
#reader-toc-list button:hover, #reader-toc-list button:focus-visible { background: var(--hover-background); }
.reader-status { max-width: 760px; margin: 1rem auto; padding: 1rem; color: var(--text-light); text-align: center; }
.reader-skeleton { padding: 1.5rem 0 0; }
.reader-skeleton-title, .reader-skeleton-line { display: block; border-radius: 4px; background: currentColor; opacity: .08; animation: reader-skeleton-pulse 1.6s ease-in-out infinite; }
.reader-skeleton-title { width: 40%; height: 1.4em; margin: 0 auto 2em; }
.reader-skeleton-line { height: .8em; margin-bottom: .95em; }
.reader-skeleton-gap { display: block; height: .9em; }
@keyframes reader-skeleton-pulse { 50% { opacity: .14; } }
@media (prefers-reduced-motion: reduce) { .reader-skeleton-title, .reader-skeleton-line { animation: none; } }
.continuous-reader-content { max-width: 900px; margin: 0 auto; padding: 1rem 1.25rem 0; line-height: 1.75; color: var(--text-color); }
.continuous-reader-content > p { margin: 0 0 1.25em; }
.reader-chapter-heading { margin: 1rem 0 1.25rem; font-family: var(--font-serif); font-size: 1.6rem; }
.continuous-reader-content .reader-section-heading { margin: 1.2em 0 .45em; font-family: var(--font-serif); font-size: 1.1em; font-weight: 700; line-height: 1.35; }
.continuous-reader-content > p.reader-list-item,
.continuous-reader-content .side-by-side-cell > p.reader-list-item { margin-bottom: .25em; padding-left: 1.5em; text-indent: -1.5em; }
.reader-gap { color: var(--text-light); font-style: italic; }
.continuous-reader-footer { position: fixed; z-index: 30; bottom: 0; left: 0; right: 0; display: flex; align-items: center; justify-content: center; gap: .75rem; box-sizing: border-box; padding: .42rem 1rem; border-top: 1px solid var(--rule); background: var(--card-background); color: var(--ink-muted); font-size: .82rem; text-align: center; }
.reader-progress-track { width: min(240px, 40vw); height: 3px; overflow: hidden; border-radius: 99px; background: var(--rule); }
.reader-progress-track span { display: block; height: 100%; background: var(--accent); transition: width .3s ease; }
/* Chapter illustration under its heading; fixed height so pagination can
   measure the page before the image loads. */
.reader-illustration { display: flex; justify-content: center; height: min(52vh, 480px); margin: 0 0 1.5rem; }
.reader-illustration picture { display: contents; }
.reader-illustration img { max-width: 100%; height: 100%; object-fit: contain; border-radius: 4px; cursor: zoom-in; }
.chapter-side-by-side .reader-illustration { grid-column: 1 / -1; }
/* Side by side: a hairline between aligned original / plain-English rows */
.continuous-reader-section .side-by-side-row { padding: .9rem 0; border-bottom: 1px solid var(--rule); }
.continuous-reader-section[data-theme="dark"] { background: var(--reading-theme-dark-bg); color: var(--reading-theme-dark-text); }
.continuous-reader-section[data-theme="dark"] .continuous-reader-chrome,
.continuous-reader-section[data-theme="dark"] .continuous-reader-footer,
.continuous-reader-section[data-theme="dark"] .reader-panel { background: var(--reading-theme-dark-bg); }
.continuous-reader-section[data-theme="dark"] .continuous-reader-chrome { border-bottom-color: var(--reading-theme-dark-border); color: var(--reading-theme-dark-text); }
.continuous-reader-section[data-theme="dark"] .reader-book-title { color: var(--sticky-header-muted); }
.continuous-reader-section[data-theme="dark"] .reader-toolbar-btn,
.continuous-reader-section[data-theme="dark"] .reader-back-btn { border-color: var(--reading-theme-dark-border); }
.continuous-reader-section[data-theme="dark"] .reader-toolbar-btn:hover,
.continuous-reader-section[data-theme="dark"] .reader-back-btn:hover { background: var(--sticky-header-accent); }
.continuous-reader-section[data-theme="dark"] .side-by-side-row,
.continuous-reader-section[data-theme="dark"] .continuous-reader-footer { border-color: var(--reading-theme-dark-border); }
.continuous-reader-section[data-theme="dark"] .reader-progress-track { background: var(--reading-theme-dark-border); }

.continuous-reader-section[data-font="georgia"] .continuous-reader-content { font-family: var(--reading-font-serif); font-optical-sizing: auto; }
.continuous-reader-section[data-font="system"] .continuous-reader-content { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
.continuous-reader-section[data-font="figtree"] .continuous-reader-content { font-family: "Figtree", "Segoe UI", Roboto, Arial, sans-serif; }

@media (max-width: 759px) {
    .continuous-reader-section { --reader-chrome-height: calc(59px + env(safe-area-inset-top)); }
    .continuous-reader-chrome { height: var(--reader-chrome-height); min-height: var(--reader-chrome-height); gap: 8px; padding: max(8px, env(safe-area-inset-top)) 10px 8px; }
    .reader-toolbar-left { min-width: 0; }
    .reader-title-wrap { max-width: calc(100vw - 128px); }
    .reader-book-title { display: none; }
    .continuous-reader-content { padding: .75rem 1rem 0; }
}

/* Block vocabulary (shared/static/js/blocks.js): quote, list, keypoints, table
   and figure. The max-heights keep a block inside one page for pagination.
   Label copy for a keypoints block is the app's, in its own stylesheet. */
.reader-quote { margin: 0 0 1.25em; padding: .1em 0 .1em 1em; border-left: 3px solid var(--rule-strong); color: var(--ink-muted); font-style: italic; }
.reader-list { max-height: calc(100dvh - 180px); overflow: auto; margin: 0 0 1.25em; padding-left: 1.5em; }
.reader-list li { margin-bottom: .3em; }
.reader-keypoints { max-height: calc(100dvh - 180px); overflow: auto; margin: 0 0 1.25em; padding: .85em 1em .85em 2.2em; border: 1px solid var(--rule-strong); border-radius: 8px; background: var(--paper-deep); }
.reader-keypoints li { margin-bottom: .3em; }
.reader-figure { margin: 0 0 1.25em; }
.reader-figure img { display: block; width: 100%; height: 40vh; object-fit: contain; }
.reader-figure figcaption { margin-top: .4em; color: var(--ink-muted); font-size: .85em; text-align: center; }
.reader-table { display: block; overflow: auto; max-height: calc(100dvh - 180px); margin: 0 0 1.25em; border-collapse: collapse; font-size: .9em; }
.reader-table th, .reader-table td { padding: .4em .7em; border: 1px solid var(--rule-strong); text-align: left; vertical-align: top; }
.reader-table th { background: var(--paper-deep); }
.reader-grid { width: 100%; max-width: 100%; overscroll-behavior: contain; }
.reader-grid th, .reader-grid td { min-width: 7em; overflow-wrap: anywhere; }
.reader-grid thead { position: sticky; top: 0; background: var(--paper-deep); }

/* Optional flat flow for complex web-reader blocks: ordinary paragraphs,
   measured and split by the shared paginator, with no nested scroll boxes. */
.reader-flow-item, .reader-flow-table-cell { overflow-wrap: anywhere; }
.reader-flow-table-cell { margin-bottom: .65em; }
.reader-flow-table-row-start { margin-top: 1.1em; padding-top: .6em; border-top: 1px solid var(--rule-strong); }
.reader-flow-keypoints-label { font-size: .75em; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-muted); }

.reader-toc-part { margin: 1.25rem .75rem .3rem; color: var(--ink-muted); font-size: .8rem; letter-spacing: .04em; }
#reader-toc-list [aria-current="location"] { background: var(--paper-deep); color: var(--accent); font-weight: 700; border-left: 3px solid var(--accent); }
.reader-status button { margin-left: .75rem; padding: .4rem .75rem; border: 1px solid currentColor; border-radius: 6px; background: var(--surface); color: var(--accent); font: inherit; cursor: pointer; }
.reader-save-status { color: var(--ink-muted); font-size: .7rem; max-width: 35%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }