:root {
    --rd-bg:           #07091E;
    --rd-canvas:       rgba(15, 20, 46, 0.78);
    --rd-canvas-bdr:   rgba(245, 239, 224, 0.10);
    --rd-text:         #F5EFE0;
    --rd-text-soft:    rgba(245, 239, 224, 0.78);
    --rd-text-muted:   rgba(245, 239, 224, 0.55);
    --rd-accent:       #F4C36B;
    --rd-accent-soft:  rgba(244, 195, 107, 0.18);
    --rd-link:         #9BB4FF;
    --rd-rule:         rgba(245, 239, 224, 0.10);
    --rd-shadow:       0 24px 60px rgba(0, 0, 0, 0.45);
    --rd-bar-bg:       rgba(7, 9, 30, 0.86);
    --rd-bar-bdr:      rgba(245, 239, 224, 0.10);
    --rd-bar-active:   rgba(168, 100, 248, 0.18);
}

html[data-theme="dark"] {
    --rd-bg:           #07091E;
    --rd-canvas:       rgba(15, 20, 46, 0.78);
    --rd-canvas-bdr:   rgba(245, 239, 224, 0.10);
    --rd-text:         #F5EFE0;
    --rd-text-soft:    rgba(245, 239, 224, 0.78);
    --rd-text-muted:   rgba(245, 239, 224, 0.55);
    --rd-accent:       #F4C36B;
    --rd-accent-soft:  rgba(244, 195, 107, 0.18);
    --rd-rule:         rgba(245, 239, 224, 0.10);
    --rd-bar-bg:       rgba(7, 9, 30, 0.86);
    --rd-bar-bdr:      rgba(245, 239, 224, 0.10);
    --rd-bar-active:   rgba(168, 100, 248, 0.18);
}

html[data-theme="sepia"] {
    --rd-bg:           #F2E6CB;
    --rd-canvas:       #FAF1D8;
    --rd-canvas-bdr:   rgba(110, 78, 38, 0.18);
    --rd-text:         #3B2A14;
    --rd-text-soft:    rgba(59, 42, 20, 0.78);
    --rd-text-muted:   rgba(59, 42, 20, 0.55);
    --rd-accent:       #B7763A;
    --rd-accent-soft:  rgba(183, 118, 58, 0.18);
    --rd-rule:         rgba(110, 78, 38, 0.18);
    --rd-bar-bg:       rgba(250, 241, 216, 0.95);
    --rd-bar-bdr:      rgba(110, 78, 38, 0.16);
    --rd-bar-active:   rgba(183, 118, 58, 0.18);
    --rd-shadow:       0 18px 50px rgba(76, 49, 12, 0.18);
}

html[data-theme="light"] {
    --rd-bg:           #F5F2EE;
    --rd-canvas:       #FFFFFF;
    --rd-canvas-bdr:   rgba(15, 30, 61, 0.12);
    --rd-text:         #1A1F36;
    --rd-text-soft:    rgba(26, 31, 54, 0.78);
    --rd-text-muted:   rgba(26, 31, 54, 0.55);
    --rd-accent:       #5A4BAA;
    --rd-accent-soft:  rgba(90, 75, 170, 0.14);
    --rd-rule:         rgba(15, 30, 61, 0.10);
    --rd-bar-bg:       rgba(255, 255, 255, 0.92);
    --rd-bar-bdr:      rgba(15, 30, 61, 0.10);
    --rd-bar-active:   rgba(90, 75, 170, 0.14);
    --rd-shadow:       0 18px 50px rgba(15, 30, 61, 0.10);
}

html { --rd-font-size: 19px; }
html[data-reader-font="xs"]  { --rd-font-size: 15px; }
html[data-reader-font="s"]   { --rd-font-size: 17px; }
html[data-reader-font="m"]   { --rd-font-size: 19px; }
html[data-reader-font="l"]   { --rd-font-size: 21px; }
html[data-reader-font="xl"]  { --rd-font-size: 24px; }
html[data-reader-font="xxl"] { --rd-font-size: 27px; }

html { --rd-leading: 1.75; }
html[data-reader-leading="compact"] { --rd-leading: 1.55; }
html[data-reader-leading="cozy"]    { --rd-leading: 1.75; }
html[data-reader-leading="airy"]    { --rd-leading: 1.95; }

html { --rd-family: 'PT Serif', 'Onest', Georgia, serif; }
html[data-reader-family="serif"] { --rd-family: 'PT Serif', Georgia, serif; }
html[data-reader-family="sans"]  { --rd-family: 'Onest', 'Manrope', system-ui, sans-serif; }

.page--reader {
    background: var(--rd-bg);
    color: var(--rd-text);
    min-height: 100vh;
    transition: background 320ms var(--ease), color 320ms var(--ease);
}

.aurora-bg--reader { opacity: 0.85; }
html[data-theme="sepia"] .aurora-bg--reader { opacity: 0.18; }
html[data-theme="light"] .aurora-bg--reader { opacity: 0.12; }

.reader-progress {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: rgba(245, 239, 224, 0.06);
    z-index: 100;
}
html[data-theme="sepia"] .reader-progress { background: rgba(110, 78, 38, 0.10); }
html[data-theme="light"] .reader-progress { background: rgba(15, 30, 61, 0.08); }

.reader-progress__bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #F4C36B, #FF6BC1 50%, #A864F8);
    box-shadow: 0 0 14px rgba(244, 195, 107, 0.5);
    transition: width 100ms linear;
}

.reader {
    position: relative;
    z-index: 1;
    max-width: 880px;
    margin: 0 auto;
    padding: 24px 16px 96px;
}
@media (min-width: 768px) {
    .reader { padding: 32px 32px 120px; }
}

.reader-bar {
    position: sticky;
    top: 8px;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin: 0 -4px 20px;
    background: var(--rd-bar-bg);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border: 1px solid var(--rd-bar-bdr);
    border-radius: 16px;
    box-shadow: var(--rd-shadow);
    transition: background 320ms var(--ease), border-color 320ms var(--ease);
}

.reader-bar__left {
    display: flex;
    align-items: center;
    gap: 14px;
    flex: 0 1 auto;
    min-width: 0;
}

.reader-bar__back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 10px;
    background: rgba(245, 239, 224, 0.04);
    border: 1px solid var(--rd-bar-bdr);
    color: var(--rd-text-soft);
    text-decoration: none;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13.5px;
    transition: background var(--t-base) var(--ease), color var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
    white-space: nowrap;
}
html[data-theme="sepia"] .reader-bar__back,
html[data-theme="light"] .reader-bar__back { background: rgba(0,0,0,0.03); }

.reader-bar__back:hover {
    background: var(--rd-bar-active);
    color: var(--rd-text);
    border-color: var(--rd-accent);
}
.reader-bar__back-icon { font-size: 16px; line-height: 1; }

.reader-bar__meta {
    display: none;
    align-items: center;
    gap: 8px;
    color: var(--rd-text-muted);
    font-size: 13px;
    font-family: var(--font-display);
}
.reader-bar__child-name { font-weight: 600; color: var(--rd-text-soft); }
.reader-bar__dot { opacity: 0.5; }

@media (min-width: 640px) {
    .reader-bar__meta { display: inline-flex; }
}

.reader-bar__controls {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1 1 auto;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.reader-ctrl {
    display: inline-flex;
    background: rgba(245, 239, 224, 0.04);
    border: 1px solid var(--rd-bar-bdr);
    border-radius: 10px;
    overflow: hidden;
}
html[data-theme="sepia"] .reader-ctrl,
html[data-theme="light"] .reader-ctrl { background: rgba(0,0,0,0.03); }

.reader-ctrl__btn {
    appearance: none;
    background: transparent;
    border: 0;
    color: var(--rd-text-soft);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13px;
    line-height: 1;
    padding: 9px 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background var(--t-base) var(--ease), color var(--t-base) var(--ease);
    white-space: nowrap;
}
.reader-ctrl__btn:hover {
    background: var(--rd-bar-active);
    color: var(--rd-text);
}
.reader-ctrl__btn:focus-visible {
    outline: 2px solid var(--rd-accent);
    outline-offset: 2px;
}
.reader-ctrl__btn + .reader-ctrl__btn {
    border-left: 1px solid var(--rd-bar-bdr);
}
.reader-ctrl__btn--solo {
    background: rgba(245, 239, 224, 0.04);
    border: 1px solid var(--rd-bar-bdr);
    border-radius: 10px;
}
html[data-theme="sepia"] .reader-ctrl__btn--solo,
html[data-theme="light"] .reader-ctrl__btn--solo { background: rgba(0,0,0,0.03); }

.reader-ctrl__btn--copy {
    color: var(--rd-accent);
}

@media (max-width: 425px) {
    .reader-bar {
        padding: 8px;
        gap: 6px;
    }
    .reader-bar__back-text { display: none; }
    .reader-bar__back {
        padding: 8px 10px;
    }
    .reader-bar__controls { gap: 4px; }
    .reader-ctrl__btn { padding: 8px 10px; font-size: 13px; }
}

.reader-ctrl__hint {
    display: none;
    font-weight: 500;
    color: var(--rd-text-muted);
    font-size: 12.5px;
}
@media (min-width: 768px) {
    .reader-ctrl__hint { display: inline; }
}

.reader-ctrl__btn.is-copied {
    background: rgba(120, 200, 140, 0.18);
    color: #B7F3C4;
    border-color: rgba(120, 200, 140, 0.45);
}
html[data-theme="sepia"] .reader-ctrl__btn.is-copied,
html[data-theme="light"] .reader-ctrl__btn.is-copied {
    background: rgba(60, 160, 90, 0.16);
    color: #2D7440;
    border-color: rgba(60, 160, 90, 0.45);
}

.reader-hero {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 36px;
}
@media (min-width: 768px) {
    .reader-hero {
        grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
        gap: 32px;
        align-items: flex-start;
    }
}

.reader-hero__cover {
    position: relative;
    aspect-ratio: 3 / 2;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: var(--rd-shadow);
    background: rgba(15, 20, 46, 0.45);
    border: 1px solid var(--rd-canvas-bdr);
}
@media (min-width: 768px) {
    .reader-hero__cover { aspect-ratio: 1 / 1; }
}
.reader-hero__cover-img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
}
.reader-hero__cover-glow {
    position: absolute; inset: -20%;
    background: radial-gradient(closest-side, rgba(244,195,107,0.25), transparent 70%);
    filter: blur(30px);
    pointer-events: none;
    opacity: 0.5;
    mix-blend-mode: screen;
}
html[data-theme="sepia"] .reader-hero__cover-glow,
html[data-theme="light"] .reader-hero__cover-glow { display: none; }

.reader-hero__body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.reader-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 4px;
}

.reader-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 11px;
    border-radius: 999px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.02em;
    background: var(--rd-accent-soft);
    color: var(--rd-accent);
    border: 1px solid transparent;
    white-space: nowrap;
}
.reader-chip--age {
    background: rgba(155, 180, 255, 0.16);
    color: #BCC9FF;
}
html[data-theme="sepia"] .reader-chip--age,
html[data-theme="light"] .reader-chip--age {
    background: rgba(90, 75, 170, 0.12);
    color: #5A4BAA;
}
.reader-chip--time {
    background: rgba(245, 239, 224, 0.08);
    color: var(--rd-text-soft);
}
html[data-theme="sepia"] .reader-chip--time,
html[data-theme="light"] .reader-chip--time {
    background: rgba(0, 0, 0, 0.05);
    color: var(--rd-text-soft);
}
.reader-chip--ghost {
    background: transparent;
    color: var(--rd-text-muted);
    border-color: var(--rd-rule);
}

.reader-hero__title {
    font-family: 'PT Serif', 'Onest', Georgia, serif;
    font-weight: 700;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.15;
    margin: 0;
    color: var(--rd-text);
    letter-spacing: -0.01em;
}

.reader-hero__caption {
    margin: 0;
    color: var(--rd-text-muted);
    font-size: 14px;
    font-family: var(--font-display);
}
.reader-hero__caption strong { color: var(--rd-text-soft); font-weight: 600; }

.reader-hero__summary {
    margin: 6px 0 0;
    padding: 14px 18px;
    border-left: 3px solid var(--rd-accent);
    background: var(--rd-accent-soft);
    color: var(--rd-text-soft);
    font-family: 'PT Serif', Georgia, serif;
    font-style: italic;
    font-size: 16px;
    line-height: 1.55;
    border-radius: 0 12px 12px 0;
}

.reader-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.reader-action-form { margin: 0; }
.reader-action {
    appearance: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border-radius: 10px;
    border: 1px solid var(--rd-canvas-bdr);
    background: rgba(245, 239, 224, 0.04);
    color: var(--rd-text-soft);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13.5px;
    cursor: pointer;
    transition: background var(--t-base) var(--ease), border-color var(--t-base) var(--ease), color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}
html[data-theme="sepia"] .reader-action,
html[data-theme="light"] .reader-action { background: rgba(0,0,0,0.03); }

.reader-action:hover {
    background: rgba(168, 100, 248, 0.14);
    color: var(--rd-text);
    border-color: rgba(168, 100, 248, 0.45);
    transform: translateY(-1px);
}
.reader-action.is-on {
    background: linear-gradient(135deg, rgba(244,195,107,0.25), rgba(168,100,248,0.25));
    color: var(--rd-text);
    border-color: var(--rd-accent);
}
.reader-action--down:hover {
    background: rgba(255, 107, 193, 0.14);
    border-color: rgba(255, 107, 193, 0.45);
}
.reader-action--down.is-on {
    background: linear-gradient(135deg, rgba(255,107,193,0.25), rgba(168,100,248,0.18));
    border-color: rgba(255, 107, 193, 0.55);
}

.reader-action--cta {
    background: linear-gradient(135deg, rgba(244,195,107,0.30), rgba(168,100,248,0.30));
    border-color: var(--rd-accent);
    color: var(--rd-text);
    font-weight: 700;
}
.reader-action--cta:hover {
    background: linear-gradient(135deg, rgba(244,195,107,0.45), rgba(168,100,248,0.45));
    border-color: var(--rd-accent);
    transform: translateY(-1px);
}

.reader-body {
    position: relative;
    padding: clamp(20px, 4vw, 56px) clamp(18px, 4vw, 64px);
    background: var(--rd-canvas);
    border: 1px solid var(--rd-canvas-bdr);
    border-radius: 18px;
    box-shadow: var(--rd-shadow);
    transition: background 320ms var(--ease), border-color 320ms var(--ease);
}
html[data-theme="dark"] .reader-body {
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.reader-body__p {
    margin: 0 0 1.05em;
    font-family: var(--rd-family);
    font-size: var(--rd-font-size);
    line-height: var(--rd-leading);
    color: var(--rd-text);
    text-align: left;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
}
.reader-body__p:last-of-type { margin-bottom: 0; }

.reader-body__p.is-first::first-letter {
    font-family: 'PT Serif', Georgia, serif;
    font-weight: 700;
    font-size: 2.6em;
    line-height: 0.95;
    float: left;
    margin: 0.08em 0.12em 0 0;
    color: var(--rd-accent);
}

.reader-body__empty {
    color: var(--rd-text-muted);
    font-style: italic;
    text-align: center;
    padding: 40px 0;
}

.reader-body__end {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--rd-rule);
    text-align: center;
    color: var(--rd-text-muted);
    font-family: var(--font-display);
}
.reader-body__end-glyph {
    display: block;
    font-size: 22px;
    color: var(--rd-accent);
    letter-spacing: 0.4em;
    margin-bottom: 8px;
}
.reader-body__end-text {
    font-size: 14px;
    font-style: italic;
}

.reader-downloads {
    margin-top: 36px;
    padding: 24px;
    background: var(--rd-canvas);
    border: 1px solid var(--rd-canvas-bdr);
    border-radius: 16px;
}
.reader-downloads__title {
    margin: 0 0 6px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 18px;
    color: var(--rd-text);
}
.reader-downloads__hint {
    margin: 0 0 16px;
    color: var(--rd-text-muted);
    font-size: 14px;
    line-height: 1.5;
}
.reader-downloads__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}
@media (min-width: 520px) {
    .reader-downloads__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

.reader-download {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 16px 8px;
    border-radius: 12px;
    border: 1px solid var(--rd-canvas-bdr);
    background: rgba(245, 239, 224, 0.04);
    color: var(--rd-text-soft);
    text-decoration: none;
    font-family: var(--font-display);
    transition: background var(--t-base) var(--ease), border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease), color var(--t-base) var(--ease);
}
html[data-theme="sepia"] .reader-download,
html[data-theme="light"] .reader-download { background: rgba(0,0,0,0.03); }

.reader-download:hover {
    background: var(--rd-accent-soft);
    border-color: var(--rd-accent);
    color: var(--rd-text);
    transform: translateY(-2px);
}
.reader-download__ext {
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.06em;
}
.reader-download__hint {
    font-size: 11.5px;
    color: var(--rd-text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.reader-download.is-missing {
    opacity: 0.45;
    cursor: not-allowed;
}
.reader-download.is-missing:hover {
    background: rgba(245, 239, 224, 0.04);
    border-color: var(--rd-canvas-bdr);
    color: var(--rd-text-soft);
    transform: none;
}

.reader-nav {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 10px;
    margin-top: 28px;
}

.reader-nav__link {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--rd-canvas-bdr);
    background: var(--rd-canvas);
    text-decoration: none;
    color: var(--rd-text);
    min-width: 0;
    transition: border-color var(--t-base) var(--ease), background var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}
.reader-nav__link:hover {
    border-color: var(--rd-accent);
    transform: translateY(-2px);
}
.reader-nav__link--next { text-align: right; }
.reader-nav__label {
    font-family: var(--font-display);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--rd-text-muted);
}
.reader-nav__title {
    font-family: 'PT Serif', Georgia, serif;
    font-size: 15.5px;
    line-height: 1.3;
    color: var(--rd-text);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.reader-nav__placeholder {
    display: block;
    min-height: 1px;
}

.reader-totop {
    position: fixed;
    right: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--rd-bar-bdr);
    background: var(--rd-bar-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    color: var(--rd-text);
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease), visibility 0s linear var(--t-base), background var(--t-base) var(--ease);
    z-index: 30;
    box-shadow: var(--rd-shadow);
}
.reader-totop.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease), visibility 0s linear 0s, background var(--t-base) var(--ease);
}
.reader-totop:hover {
    background: var(--rd-bar-active);
    border-color: var(--rd-accent);
}

@media (min-width: 1100px) {
    .reader-totop {
        right: calc((100vw - 880px) / 2 - 70px);
        bottom: 40px;
    }
}

@media print {
    .reader-bar,
    .reader-progress,
    .reader-totop,
    .reader-downloads,
    .reader-nav,
    .reader-hero__actions,
    .aurora-bg { display: none !important; }

    .page--reader { background: white !important; color: black !important; }
    .reader { padding: 0; }
    .reader-body, .reader-hero__cover {
        background: white !important;
        border: 0 !important;
        box-shadow: none !important;
    }
    .reader-body__p {
        color: black !important;
        font-family: 'PT Serif', Georgia, serif !important;
        font-size: 12pt !important;
        line-height: 1.55 !important;
    }
    .reader-hero__title { color: black !important; }
}

@media (prefers-reduced-motion: reduce) {
    .reader-progress__bar,
    .reader-totop,
    .reader-action,
    .reader-bar,
    .reader-body,
    .reader-nav__link,
    .reader-download,
    .page--reader {
        transition-duration: 0ms !important;
    }
    .reader-action:hover,
    .reader-nav__link:hover,
    .reader-download:hover { transform: none; }
}