:root {
    --epub-reader-bg: #efe7d9;
    --epub-reader-surface: #ffffff;
    --epub-reader-ink: #1f2937;
    --epub-reader-muted: #667085;
    --epub-reader-blue: #2384f5;
    --epub-reader-green: #20b86b;
    --epub-reader-danger: #ef4444;
    --epub-reader-line: rgba(92, 72, 42, .12);
    --epub-reader-shadow: 0 12px 28px rgba(20, 24, 32, .12);
    --epub-reader-font-size: 16px;
}

body:has(.epub-reader) {
    overflow: hidden;
}

.epub-reader-embed-body,
.epub-reader-test-body {
    margin: 0;
    height: 100vh;
    min-height: 100vh;
    background: var(--epub-reader-bg);
    overflow: hidden;
}

.epub-reader {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 0;
    display: grid;
    grid-template-rows: minmax(0, 1fr);
    color: var(--epub-reader-ink);
    background: var(--epub-reader-bg);
    font-family: "Nunito", "Segoe UI", Arial, sans-serif;
}

.epub-debug-marker {
    position: relative;
    z-index: 50;
    display: grid;
    gap: 3px;
    margin: 6px 10px;
    padding: 8px 10px;
    border: 2px solid #2384f5;
    border-radius: 8px;
    color: #0f3057;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 8px 22px rgba(15, 48, 87, .15);
    font: 12px/1.35 "Segoe UI", Arial, sans-serif;
}

.epub-debug-marker,
.epub-reader-test-panel,
.epub-reader-runtime-panel,
#epubRuntimeDiagnostics {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

/* The library reader opens books in the background; avoid a transient status card. */
#epubReader .epub-reader-status {
    display: none !important;
}

.epub-debug-marker strong {
    color: #0754b7;
    font-size: 13px;
}

.epub-debug-marker span {
    overflow-wrap: anywhere;
}

.epub-debug-marker-php {
    border-color: #ef4444;
}

.epub-debug-marker-php strong {
    color: #b42318;
}

.epub-debug-marker-tpl {
    border-color: #f59e0b;
}

.epub-debug-marker-js {
    border-color: #22c55e;
}

.epub-debug-marker-js strong {
    color: #15803d;
}

.epub-reader-embed-body .epub-reader,
.epub-reader-test-body .epub-reader {
    height: 100vh;
    min-height: 0;
}

.epub-reader-toolbar button {
    border: 0;
    cursor: pointer;
    font: inherit;
}

.epub-reader-main {
    position: relative;
    min-height: 0;
    display: grid;
    place-items: stretch center;
    padding: 0 2px 66px;
    overflow: hidden;
    background: var(--epub-reader-bg);
}

.epub-reader-viewport {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
    display: grid;
    place-items: stretch;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    overflow: hidden;
}

.epub-reader-viewport::before {
    content: "";
    position: absolute;
    top: 16px;
    bottom: 16px;
    left: 50%;
    width: 42px;
    transform: translateX(-50%);
    pointer-events: none;
    background: linear-gradient(90deg,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, .02) 45%,
        rgba(0, 0, 0, .05) 50%,
        rgba(0, 0, 0, .02) 55%,
        rgba(0, 0, 0, 0) 100%);
    opacity: 0;
    transition: opacity .18s ease;
}

.epub-reader-viewport.is-spread::before {
    opacity: 1;
}

.epub-reader-content {
    position: relative;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    overflow: hidden;
    padding: 0;
    color: #1f2937;
    background: transparent;
    -webkit-tap-highlight-color: transparent;
}

.epub-reader-pages {
    position: absolute;
    inset: 0;
    overflow: auto;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    margin: 0 auto;
    padding: clamp(10px, 1vw, 20px) clamp(16px, 2vw, 30px) clamp(64px, 4.5vw, 84px);
    color: #1f2937;
    font-size: var(--epub-reader-font-size, 16px);
    line-height: 1.52;
    text-align: justify;
    text-justify: inter-word;
    word-break: normal;
    overflow-wrap: break-word;
    hyphens: auto;
    background: transparent;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-tap-highlight-color: transparent;
}

.epub-reader-pages::-webkit-scrollbar {
    width: 0;
    height: 0;
}

.epub-reader-content:focus,
.epub-reader-content:focus-visible,
.epub-reader-content:active,
.epub-reader-pages:focus,
.epub-reader-pages:focus-visible,
.epub-reader-pages:active,
.epub-reader-viewport:focus,
.epub-reader-viewport:focus-visible,
.epub-reader-viewport:active {
    outline: none !important;
    box-shadow: none !important;
}

.epub-reader-content,
.epub-reader-pages,
.epub-spine-page__body,
.epub-reader-pages .page-content,
.epub-spine-page__body .page-content {
    line-height: 1.52;
    text-align: justify;
    text-justify: inter-word;
    word-break: normal;
    overflow-wrap: break-word;
    hyphens: auto;
}

.epub-reader-content h1,
.epub-reader-content h2,
.epub-reader-content h3,
.epub-reader-pages h1,
.epub-reader-pages h2,
.epub-reader-pages h3,
.epub-spine-page__body h1,
.epub-spine-page__body h2,
.epub-spine-page__body h3 {
    margin: 0 0 .56em;
    color: #0f4b86;
    line-height: 1.24;
    text-align: center;
}

.epub-reader-content p,
.epub-reader-content div,
.epub-reader-content li,
.epub-reader-content blockquote,
.epub-reader-pages p,
.epub-reader-pages div,
.epub-reader-pages li,
.epub-reader-pages blockquote,
.epub-spine-page__body p,
.epub-spine-page__body div,
.epub-spine-page__body li,
.epub-spine-page__body blockquote,
.page-content p,
.page-content div,
.page-content li,
.page-content blockquote {
    margin-top: 0;
    margin-bottom: .56em;
    line-height: 1.52;
}

.epub-reader-content li,
.epub-reader-pages li,
.epub-spine-page__body li,
.page-content li {
    margin-bottom: .22em;
}

.epub-reader-content blockquote,
.epub-reader-pages blockquote,
.epub-spine-page__body blockquote,
.page-content blockquote {
    margin-top: .34em;
    margin-bottom: .34em;
    text-align: left;
}

.epub-reader-content p,
.epub-reader-content div,
.epub-reader-content li,
.epub-reader-pages p,
.epub-reader-pages div,
.epub-reader-pages li,
.epub-spine-page__body p,
.epub-spine-page__body div,
.epub-spine-page__body li,
.page-content p,
.page-content div,
.page-content li {
    text-align: justify;
}

.epub-reader-content ul,
.epub-reader-content ol,
.epub-reader-pages ul,
.epub-reader-pages ol,
.epub-spine-page__body ul,
.epub-spine-page__body ol,
.page-content ul,
.page-content ol {
    margin-top: 0;
    margin-bottom: .32em;
    padding-top: 0;
    padding-bottom: 0;
}

.epub-reader-content pre,
.epub-reader-content code,
.epub-reader-pages pre,
.epub-reader-pages code,
.epub-spine-page__body pre,
.epub-spine-page__body code,
.page-content pre,
.page-content code {
    text-align: left;
}

.epub-reader-content p:empty,
.epub-reader-content div:empty,
.epub-reader-content blockquote:empty,
.epub-reader-pages p:empty,
.epub-reader-pages div:empty,
.epub-reader-pages blockquote:empty,
.epub-spine-page__body p:empty,
.epub-spine-page__body div:empty,
.epub-spine-page__body blockquote:empty,
.page-content p:empty,
.page-content div:empty,
.page-content blockquote:empty {
    display: none;
}

.epub-reader-content img,
.epub-reader-content svg,
.epub-reader-content video,
.epub-reader-content canvas,
.epub-reader-pages img,
.epub-reader-pages svg,
.epub-reader-pages video,
.epub-reader-pages canvas {
    max-width: 100%;
    height: auto;
}

.epub-reader-content table,
.epub-reader-pages table {
    max-width: 100%;
    border-collapse: collapse;
}

.epub-reader-content *,
.epub-reader-pages * {
    max-width: 100%;
}

.epub-book-chapter {
    break-inside: auto;
    page-break-inside: auto;
    margin: 0;
}

.epub-spine-page {
    width: min(100%, 1040px);
    min-height: 100%;
    margin: 0 auto;
    padding: clamp(6px, .85vw, 10px) clamp(18px, 1.9vw, 28px) clamp(48px, 3.25vw, 66px);
    box-sizing: border-box;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.epub-spine-page__body {
    min-width: 0;
    font-size: inherit;
    line-height: inherit;
}

.epub-reader-status,
.epub-reader-error {
    position: absolute;
    inset: 50% auto auto 50%;
    z-index: 4;
    width: min(480px, calc(100vw - 48px));
    display: grid;
    justify-items: center;
    gap: 9px;
    padding: 26px 28px;
    border: 1px solid rgba(79, 147, 217, .22);
    border-radius: 8px;
    text-align: center;
    background: rgba(255, 255, 255, .92);
    box-shadow: var(--epub-reader-shadow);
    transform: translate(-50%, -50%);
}

.epub-reader-error {
    border-color: rgba(239, 68, 68, .22);
}

.epub-reader-spinner {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 4px solid rgba(35, 132, 245, .14);
    border-top-color: var(--epub-reader-blue);
    animation: epub-reader-spin .8s linear infinite;
}

.epub-reader-status strong,
.epub-reader-error strong {
    color: #0f4b86;
    font-size: 16px;
}

.epub-reader-error strong {
    color: #b42318;
}

.epub-reader-status small,
.epub-reader-error p,
.epub-reader-error code {
    margin: 0;
    color: var(--epub-reader-muted);
    font-size: 13px;
}

.epub-reader-error code {
    display: block;
    max-width: 100%;
    overflow-wrap: anywhere;
    padding: 8px 10px;
    border-radius: 6px;
    background: #fff4f2;
    color: #9f1d14;
    text-align: left;
}

.epub-reader.is-ready .epub-reader-status,
.epub-reader.has-error .epub-reader-status {
    display: none;
}

.epub-reader.is-ready .epub-reader-error,
.epub-reader-error[hidden] {
    display: none !important;
}

.epub-reader.has-error .epub-reader-viewport {
    opacity: .18;
}

.epub-reader-toc-backdrop {
    position: absolute;
    inset: 0;
    z-index: 9;
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    padding: 0;
    background: rgba(17, 24, 39, .18);
    cursor: default;
}

.epub-reader-toc-panel {
    position: absolute;
    top: 10px;
    right: 10px;
    bottom: 62px;
    z-index: 10;
    width: min(360px, calc(100vw - 24px));
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    border: 1px solid rgba(92, 72, 42, .12);
    border-radius: 10px;
    background: rgba(255, 252, 246, .96);
    box-shadow: 0 14px 28px rgba(67, 48, 25, .12);
    overflow: hidden;
}

.epub-reader-toc-panel__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-bottom: 1px solid rgba(92, 72, 42, .12);
    color: #0f4b86;
}

.epub-reader-toc-panel__head strong {
    font-size: 13px;
    font-weight: 850;
}

.epub-reader-toc-panel__head button {
    display: grid;
    place-items: center;
    width: 26px;
    height: 26px;
    border: 0;
    border-radius: 50%;
    color: #7c2d12;
    background: rgba(255, 255, 255, .88);
    font: inherit;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}

.epub-reader-toc-panel__head button .epub-toolbar-svg {
    width: 14px;
    height: 14px;
}

.epub-reader-toc-panel__body {
    min-height: 0;
    overflow: auto;
    padding: 8px 8px 12px;
}

.epub-reader-toc-empty {
    margin: 0;
    padding: 10px 8px;
    color: var(--epub-reader-muted);
    font-size: 13px;
}

.epub-reader-toc-list {
    display: grid;
    gap: 4px;
}

.epub-reader-toc-item {
    display: grid;
    gap: 4px;
}

.epub-reader-toc-button {
    width: 100%;
    min-height: 34px;
    padding: 8px 10px;
    border: 1px solid transparent;
    border-radius: 8px;
    text-align: left;
    color: #1f2937;
    background: transparent;
    font: inherit;
    font-size: 13px;
    line-height: 1.35;
    cursor: pointer;
}

.epub-reader-toc-button--group {
    cursor: default;
    color: #0f4b86;
    font-weight: 850;
}

.epub-reader-toc-button:hover {
    border-color: rgba(35, 132, 245, .18);
    background: rgba(35, 132, 245, .06);
}

.epub-reader-toc-button[data-depth="0"] {
    font-weight: 850;
}

.epub-reader-toc-button[data-depth="1"] {
    padding-left: 22px;
}

.epub-reader-toc-button[data-depth="2"] {
    padding-left: 34px;
}

.epub-reader-toc-button[data-depth="3"] {
    padding-left: 46px;
}

@media (max-width: 760px) {
    .epub-reader-topbar {
        gap: 6px;
        padding-inline: 8px;
    }

    .epub-reader-back strong,
    .epub-reader-toc strong {
        display: none;
    }

    .epub-reader-back,
    .epub-reader-toc {
        padding-inline: 8px;
    }

    .epub-reader-title {
        max-width: 100%;
    }

    .epub-reader-toc-panel {
        left: 10px;
        width: auto;
    }
}

.epub-reader-toolbar {
    position: absolute;
    left: 50%;
    right: auto;
    bottom: 8px;
    z-index: 8;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 36px;
    padding: 2px 5px;
    border: 1px solid rgba(120, 98, 62, .10);
    border-radius: 12px;
    background: rgba(255, 252, 246, .78);
    box-shadow: 0 8px 18px rgba(74, 55, 30, .10);
    backdrop-filter: blur(10px);
    transform: translateX(-50%);
}

.epub-reader-toolbar button {
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 9px;
    color: #4c5b70;
    background: transparent;
    line-height: 1;
    transition: transform .16s ease, background .16s ease, color .16s ease, box-shadow .16s ease;
}

.epub-reader-toolbar button:hover:not(:disabled) {
    color: #0f68c7;
    background: rgba(10, 132, 255, .10);
    box-shadow: 0 6px 14px rgba(10, 132, 255, .08);
    transform: translateY(-1px);
}

.epub-reader-toolbar button:disabled {
    cursor: default;
    opacity: .42;
}

.epub-toolbar-icon-btn {
    font-size: 0;
    font-weight: 900;
    letter-spacing: 0;
}

.epub-toolbar-svg {
    display: block;
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.95;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.epub-toolbar-font-mark {
    display: inline-grid;
    place-items: center;
    min-width: 18px;
    font-size: 12px;
    line-height: 1;
    font-weight: 900;
}

.epub-toolbar-font {
    width: 30px !important;
}

.epub-toolbar-mode {
    width: 34px !important;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 0.02em;
}

.epub-toolbar-page-wrap {
    position: relative;
    display: inline-grid;
    place-items: center;
    min-width: 66px;
    height: 22px;
    padding: 0;
    border: 1px solid rgba(120, 98, 62, .10);
    border-radius: 999px;
    color: #516175;
    background: rgba(255, 255, 255, .70);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, .64);
    overflow: hidden;
    cursor: pointer;
    transition: background .16s ease, color .16s ease, box-shadow .16s ease, transform .16s ease;
}

.epub-toolbar-page-wrap:hover {
    color: #0f68c7;
    background: rgba(10, 132, 255, .10);
    box-shadow: 0 6px 14px rgba(10, 132, 255, .08), inset 0 1px 1px rgba(255, 255, 255, .72);
    transform: translateY(-1px);
}

.epub-toolbar-page-wrap.is-editing {
    color: #0f68c7;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 6px 14px rgba(10, 132, 255, .12), inset 0 0 0 1px rgba(35, 132, 245, .18);
    cursor: text;
}

.epub-toolbar-page {
    grid-area: 1 / 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 0 8px;
    text-align: center;
    color: inherit;
    font-size: 11px;
    font-weight: 750;
    line-height: 1;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    user-select: none;
    cursor: inherit;
}

.epub-toolbar-page-input {
    grid-area: 1 / 1;
    display: none;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: 0 8px;
    border: 0;
    border-radius: inherit;
    outline: none;
    color: #1f2937;
    background: transparent;
    font: inherit;
    font-size: 11px;
    font-weight: 750;
    line-height: 1;
    text-align: center;
    font-variant-numeric: tabular-nums;
    appearance: textfield;
    -moz-appearance: textfield;
}

.epub-toolbar-page-input::-webkit-outer-spin-button,
.epub-toolbar-page-input::-webkit-inner-spin-button {
    appearance: none;
    -webkit-appearance: none;
    margin: 0;
}

.epub-toolbar-page-input:focus {
    color: #0f4b86;
}

.epub-toolbar-page-wrap.is-editing .epub-toolbar-page {
    display: none;
}

.epub-toolbar-page-wrap.is-editing .epub-toolbar-page-input {
    display: inline-flex;
}

.epub-reader-test-panel {
    position: fixed;
    right: 12px;
    bottom: 12px;
    z-index: 20;
    width: min(520px, calc(100vw - 24px));
    max-height: min(46vh, 360px);
    overflow: auto;
    border: 1px solid rgba(23, 92, 158, .18);
    border-radius: 8px;
    background: rgba(255, 255, 255, .95);
    box-shadow: 0 14px 32px rgba(15, 36, 58, .18);
    color: #1f2937;
    font-family: "Segoe UI", Arial, sans-serif;
}

.epub-reader-test-panel h2 {
    margin: 0;
    padding: 10px 12px;
    border-bottom: 1px solid #e5e7eb;
    color: #0f4b86;
    font-size: 14px;
}

.epub-reader-test-panel dl {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 0;
    margin: 0;
    font-size: 12px;
}

.epub-reader-test-panel dt,
.epub-reader-test-panel dd {
    margin: 0;
    padding: 8px 10px;
    border-bottom: 1px solid #edf2f7;
}

.epub-reader-test-panel dt {
    color: #667085;
    font-weight: 700;
}

.epub-reader-test-panel dd {
    overflow-wrap: anywhere;
}

@keyframes epub-reader-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 760px) {
    .epub-reader {
        grid-template-rows: minmax(0, 1fr);
    }

    .epub-reader-main {
        padding: 0 2px 58px;
    }

    .epub-reader-viewport {
        min-height: 0;
    }

    .epub-reader-pages {
        width: 100%;
        padding: 8px 8px 64px;
        font-size: var(--epub-reader-font-size, 15px);
    }

    .epub-spine-page {
        width: 100%;
        padding: 10px 10px 58px;
    }

    .epub-reader-toolbar {
        bottom: 5px;
        gap: 3px;
        height: 34px;
        padding: 2px 4px;
        max-width: calc(100vw - 12px);
    }

    .epub-reader-toolbar button {
        width: 26px;
        height: 26px;
    }

    .epub-toolbar-svg {
        width: 16px;
        height: 16px;
    }

    .epub-toolbar-font-mark {
        min-width: 16px;
        font-size: 11px;
    }

    .epub-toolbar-font {
        width: 28px !important;
    }

    .epub-toolbar-mode {
        width: 30px !important;
        font-size: 10px;
    }

    .epub-toolbar-page {
        min-width: 56px;
        font-size: 10px;
        padding-inline: 6px;
    }

    .epub-toolbar-page-wrap {
        min-width: 56px;
        height: 20px;
    }

    .epub-toolbar-page-input {
        font-size: 10px;
        padding-inline: 6px;
    }

    .epub-reader-test-panel {
        position: static;
        width: auto;
        max-height: none;
        margin: 8px;
    }
}