/* ═══════════════════════════════════════════════════════════════
                         CSS VARIABLES & THEMES
═══════════════════════════════════════════════════════════════ */
:root {
    --cream: #faf7f2;
    --cream-dark: #f0ebe3;
    --slate-deep: #0f172a;
    --slate-medium: #334155;
    --gold: #c9a227;
    --gold-muted: #d4b896;
    --ink: #2d2926;
    --paper: #fffef9;
    /* Reader theme tokens */
    --reader-bg: var(--paper);
    --reader-text: var(--ink);
    --reader-text-muted: #6b6560;
    --reader-surface: #ffffff;
    --reader-surface-hover: var(--cream);
    --reader-border: var(--cream-dark);
    --reader-chapter-accent: var(--gold);
    --reader-highlight: rgba(201, 162, 39, 0.25);
    --reader-shadow: 0 1px 3px rgba(0,0,0,0.06);
    /* Reader layout tokens */
    --reader-font-size: 18px;
    --reader-line-height: 1.8;
    --reader-max-width: 680px;
    --header-height: 56px;
    --progress-height: 3px;
}

/* ── Dark Theme ── */
[data-theme="dark"] {
    --reader-bg: #1a1a2e;
    --reader-text: #e0ddd5;
    --reader-text-muted: #8a8780;
    --reader-surface: #22223b;
    --reader-surface-hover: #2a2a45;
    --reader-border: #333355;
    --reader-chapter-accent: var(--gold);
    --reader-highlight: rgba(201, 162, 39, 0.2);
    --reader-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* ── Sepia Theme ── */
[data-theme="sepia"] {
    --reader-bg: #f4ecd8;
    --reader-text: #5b4636;
    --reader-text-muted: #8b7a6b;
    --reader-surface: #efe6d0;
    --reader-surface-hover: #e8ddc4;
    --reader-border: #d4c5a9;
    --reader-chapter-accent: #a07830;
    --reader-highlight: rgba(160, 120, 48, 0.25);
    --reader-shadow: 0 1px 3px rgba(91,70,54,0.08);
}

/* ═══════════════════════════════════════════════════════════════
                         RESET & BASE
        ═══════════════════════════════════════════════════════════════ */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Merriweather', Georgia, serif;
    background: var(--reader-bg);
    color: var(--reader-text);
    margin: 0;
    padding: 0;
    transition: background 0.4s ease, color 0.4s ease;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

::selection {
    background: var(--reader-highlight);
}

.font-serif {
    font-family: 'Cormorant Garamond', Georgia, serif;
}

.font-sans {
    font-family: 'Inter', system-ui, sans-serif;
}

/* ═══════════════════════════════════════════════════════════════
                         READING PROGRESS BAR
        ═══════════════════════════════════════════════════════════════ */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: var(--progress-height);
    background: linear-gradient(90deg, var(--gold), var(--gold-muted));
    z-index: 1010;
    transition: width 0.15s ease-out;
}

/* ═══════════════════════════════════════════════════════════════
                         STICKY HEADER
        ═══════════════════════════════════════════════════════════════ */
.reader-header {
    position: sticky;
    top: var(--progress-height);
    z-index: 1000;
    background: var(--reader-surface);
    border-bottom: 1px solid var(--reader-border);
    box-shadow: var(--reader-shadow);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    transition: all 0.4s ease, transform 0.3s ease;
}

    .reader-header.hidden {
        transform: translateY(calc(-1 * (var(--header-height) + var(--progress-height) + 2px)));
    }

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.header-back {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--reader-surface-hover);
    color: var(--reader-text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

    .header-back:hover {
        color: var(--reader-chapter-accent);
        background: var(--reader-border);
    }

.header-title-group {
    min-width: 0;
}

.header-book-title {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--reader-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

.header-chapter-name {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--reader-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.header-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: transparent;
    color: var(--reader-text-muted);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

    .header-btn:hover {
        background: var(--reader-surface-hover);
        color: var(--reader-chapter-accent);
    }

    .header-btn.active {
        background: var(--reader-chapter-accent);
        color: white;
    }

/* ═══════════════════════════════════════════════════════════════
                         SIDEBAR NAV DRAWER (Table of Contents)
        ═══════════════════════════════════════════════════════════════ */
.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(2px);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

    .drawer-overlay.open {
        opacity: 1;
        visibility: visible;
    }

.nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 340px;
    max-width: 85vw;
    height: 100vh;
    background: var(--reader-surface);
    z-index: 2001;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 24px rgba(0,0,0,0.15);
}

    .nav-drawer.open {
        transform: translateX(0);
    }

.drawer-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--reader-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

    .drawer-header h3 {
        font-family: 'Cormorant Garamond', Georgia, serif;
        font-size: 1.25rem;
        font-weight: 700;
        margin: 0;
        color: var(--reader-text);
    }

.drawer-close {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--reader-surface-hover);
    border: none;
    color: var(--reader-text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

    .drawer-close:hover {
        color: var(--reader-chapter-accent);
    }

.drawer-tabs {
    display: flex;
    border-bottom: 1px solid var(--reader-border);
    flex-shrink: 0;
}

.drawer-tab {
    flex: 1;
    padding: 0.75rem 0.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--reader-text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

    .drawer-tab:hover {
        color: var(--reader-text);
    }

    .drawer-tab.active {
        color: var(--reader-chapter-accent);
        border-bottom-color: var(--reader-chapter-accent);
    }

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.drawer-panel {
    display: none;
}

    .drawer-panel.active {
        display: block;
    }

/* TOC items */
.toc-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1.5rem;
    text-decoration: none;
    color: var(--reader-text);
    transition: all 0.2s ease;
    font-size: 0.875rem;
    line-height: 1.4;
    border-left: 3px solid transparent;
}

    .toc-item:hover {
        background: var(--reader-surface-hover);
        border-left-color: var(--reader-chapter-accent);
        color: var(--reader-chapter-accent);
    }

    .toc-item.current {
        background: var(--reader-surface-hover);
        border-left-color: var(--reader-chapter-accent);
        font-weight: 600;
    }

.toc-number {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--reader-chapter-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 22px;
}

.toc-label {
    min-width: 0;
}

.toc-chapter-title {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-weight: 600;
    font-size: 0.95rem;
    display: block;
}

.toc-meta {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.65rem;
    color: var(--reader-text-muted);
}

/* Bookmark / note items in drawer */
.drawer-item {
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--reader-border);
}

.drawer-item-title {
    font-family: 'Inter', system-ui, sans-serif;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--reader-chapter-accent);
    margin-bottom: 0.25rem;
}

.drawer-item-text {
    font-size: 0.8rem;
    color: var(--reader-text-muted);
    line-height: 1.5;
}

.drawer-item-date {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.6rem;
    color: var(--reader-text-muted);
    margin-top: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.drawer-empty {
    padding: 2rem 1.5rem;
    text-align: center;
    color: var(--reader-text-muted);
    font-size: 0.85rem;
}

    .drawer-empty i {
        display: block;
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
        opacity: 0.4;
    }

/* ═══════════════════════════════════════════════════════════════
                         SETTINGS DRAWER (Right Side)
        ═══════════════════════════════════════════════════════════════ */
.settings-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: var(--reader-surface);
    z-index: 2001;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 24px rgba(0,0,0,0.15);
}

    .settings-drawer.open {
        transform: translateX(0);
    }

.settings-section {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--reader-border);
}

.settings-label {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--reader-text-muted);
    margin-bottom: 0.75rem;
}

/* Theme switcher */
.theme-options {
    display: flex;
    gap: 0.5rem;
}

.theme-btn {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border-radius: 10px;
    border: 2px solid var(--reader-border);
    background: transparent;
    cursor: pointer;
    text-align: center;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--reader-text-muted);
    transition: all 0.2s ease;
}

    .theme-btn:hover {
        border-color: var(--reader-chapter-accent);
        color: var(--reader-text);
    }

    .theme-btn.active {
        border-color: var(--reader-chapter-accent);
        background: var(--reader-chapter-accent);
        color: white;
    }

    .theme-btn .theme-preview {
        width: 20px;
        height: 20px;
        border-radius: 50%;
        margin: 0 auto 0.35rem;
        border: 1px solid rgba(0,0,0,0.1);
    }

.theme-preview-light {
    background: #fffef9;
}

.theme-preview-dark {
    background: #1a1a2e;
}

.theme-preview-sepia {
    background: #f4ecd8;
}

/* Slider styles */
.settings-slider {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 2px;
    background: var(--reader-border);
    outline: none;
    margin-top: 0.5rem;
}

    .settings-slider::-webkit-slider-thumb {
        -webkit-appearance: none;
        appearance: none;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background: var(--reader-chapter-accent);
        cursor: pointer;
        border: 2px solid var(--reader-surface);
        box-shadow: 0 1px 4px rgba(0,0,0,0.15);
    }

    .settings-slider::-moz-range-thumb {
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background: var(--reader-chapter-accent);
        cursor: pointer;
        border: 2px solid var(--reader-surface);
        box-shadow: 0 1px 4px rgba(0,0,0,0.15);
    }

.slider-value {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--reader-chapter-accent);
    float: right;
    margin-top: -0.2rem;
}

/* Width mode toggles */
.width-options {
    display: flex;
    gap: 0.5rem;
}

.width-btn {
    flex: 1;
    padding: 0.5rem;
    border-radius: 8px;
    border: 2px solid var(--reader-border);
    background: transparent;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

    .width-btn:hover {
        border-color: var(--reader-chapter-accent);
    }

    .width-btn.active {
        border-color: var(--reader-chapter-accent);
        background: var(--reader-chapter-accent);
    }

    .width-btn .width-bar {
        height: 3px;
        background: var(--reader-text-muted);
        border-radius: 2px;
        margin: 0 auto;
        transition: all 0.2s ease;
    }

    .width-btn.active .width-bar {
        background: white;
    }

.width-btn-label {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--reader-text-muted);
    margin-top: 0.35rem;
}

.width-btn.active .width-btn-label {
    color: white;
}

/* Focus mode toggle */
.focus-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}

.focus-toggle-label {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--reader-text);
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--reader-border);
    border-radius: 12px;
    transition: background 0.3s ease;
    cursor: pointer;
}

    .toggle-switch.on {
        background: var(--reader-chapter-accent);
    }

    .toggle-switch::after {
        content: '';
        position: absolute;
        top: 2px;
        left: 2px;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background: white;
        box-shadow: 0 1px 3px rgba(0,0,0,0.2);
        transition: transform 0.3s ease;
    }

    .toggle-switch.on::after {
        transform: translateX(20px);
    }

/* ═══════════════════════════════════════════════════════════════
                         MAIN READING AREA
        ═══════════════════════════════════════════════════════════════ */
.reader-body {
    max-width: var(--reader-max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 6rem;
    transition: max-width 0.4s ease;
}

/* ── Book Cover Hero ── */
.cover-hero {
    text-align: center;
    margin-bottom: 3rem;
    padding-top: 1rem;
}

.cover-image {
    max-width: 280px;
    width: 100%;
    border-radius: 6px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.15), 0 2px 8px rgba(0,0,0,0.08);
    margin-bottom: 2rem;
}

.cover-title {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--reader-text);
    line-height: 1.2;
    margin: 0 0 0.5rem;
}

.cover-author {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--reader-chapter-accent);
    margin-bottom: 1.5rem;
}

.cover-description {
    font-size: 0.95rem;
    color: var(--reader-text-muted);
    line-height: 1.7;
    max-width: 520px;
    margin: 0 auto;
}

/* ── Dividers ── */
.reader-divider {
    border: none;
    height: 1px;
    background: var(--reader-border);
    margin: 2.5rem 0;
}

.reader-divider-ornament {
    text-align: center;
    margin: 3rem 0;
    color: var(--reader-chapter-accent);
    font-size: 1.25rem;
    letter-spacing: 0.5em;
    opacity: 0.5;
}

/* ── Table of Contents ── */
.reader-toc {
    margin: 2rem 0;
}

    .reader-toc h3 {
        font-family: 'Cormorant Garamond', Georgia, serif;
        font-size: 1.5rem;
        font-weight: 700;
        text-align: center;
        margin-bottom: 1.5rem;
        color: var(--reader-text);
    }

.toc-grid {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .toc-grid li {
        border-bottom: 1px solid var(--reader-border);
    }

        .toc-grid li:last-child {
            border-bottom: none;
        }

    .toc-grid a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.85rem 0.5rem;
        text-decoration: none;
        color: var(--reader-text);
        transition: all 0.2s ease;
        font-size: 0.95rem;
    }

        .toc-grid a:hover {
            color: var(--reader-chapter-accent);
            padding-left: 1rem;
        }

    .toc-grid .toc-ch-num {
        font-family: 'Inter', system-ui, sans-serif;
        font-size: 0.6rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.08em;
        color: var(--reader-chapter-accent);
        margin-right: 0.75rem;
        min-width: 65px;
    }

    .toc-grid .toc-ch-title {
        font-family: 'Cormorant Garamond', Georgia, serif;
        font-weight: 600;
        flex: 1;
    }

    .toc-grid .toc-ch-time {
        font-family: 'Inter', system-ui, sans-serif;
        font-size: 0.65rem;
        color: var(--reader-text-muted);
        margin-left: 0.75rem;
    }

/* ── Chapter Blocks ── */
.chapter-block {
    margin: 3rem 0;
    scroll-margin-top: calc(var(--header-height) + var(--progress-height) + 24px);
}

.chapter-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-top: 1rem;
}

.chapter-number-label {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--reader-chapter-accent);
    margin-bottom: 0.5rem;
}

.chapter-title {
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--reader-text);
    line-height: 1.3;
    margin: 0;
}

.chapter-meta-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 1rem;
}

.chapter-meta-item {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.65rem;
    color: var(--reader-text-muted);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.chapter-body {
    font-size: var(--reader-font-size);
    line-height: var(--reader-line-height);
    color: var(--reader-text);
}

    .chapter-body p {
        margin: 0 0 1em;
        text-indent: 1.5em;
    }

        .chapter-body p:first-child {
            text-indent: 0;
        }

            .chapter-body p:first-child::first-letter {
                font-family: 'Cormorant Garamond', Georgia, serif;
                font-size: 3.2em;
                float: left;
                line-height: 0.8;
                padding-right: 0.08em;
                margin-top: 0.05em;
                color: var(--reader-chapter-accent);
                font-weight: 700;
            }

/* Chapter inline actions bar */
.chapter-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--reader-border);
}

.chapter-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--reader-border);
    background: var(--reader-surface);
    color: var(--reader-text-muted);
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

    .chapter-action-btn:hover {
        border-color: var(--reader-chapter-accent);
        color: var(--reader-chapter-accent);
        background: var(--reader-surface-hover);
    }

/* ── Section blocks (front/back matter) ── */
.section-block {
    margin: 2rem 0;
    scroll-margin-top: calc(var(--header-height) + var(--progress-height) + 24px);
}

    .section-block h2 {
        font-family: 'Cormorant Garamond', Georgia, serif;
        font-size: 1.35rem;
        font-weight: 700;
        text-align: center;
        margin-bottom: 1.5rem;
        color: var(--reader-text);
    }

    .section-block p, .section-body p {
        font-size: var(--reader-font-size);
        line-height: var(--reader-line-height);
        margin: 0 0 1em;
    }

/* ── Chapter Navigation ── */
.chapter-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 3rem 0 2rem;
    padding: 1.25rem 0;
    border-top: 1px solid var(--reader-border);
    border-bottom: 1px solid var(--reader-border);
}

.chapter-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: 24px;
    background: var(--reader-surface-hover);
    color: var(--reader-text-muted);
    text-decoration: none;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.2s ease;
    border: 1px solid var(--reader-border);
}

    .chapter-nav-btn:hover {
        background: var(--reader-chapter-accent);
        color: white;
        border-color: var(--reader-chapter-accent);
    }

    .chapter-nav-btn.disabled {
        opacity: 0.3;
        pointer-events: none;
    }

/* ── Footer ── */
.reader-footer {
    text-align: center;
    padding: 3rem 0 2rem;
    color: var(--reader-text-muted);
}

    .reader-footer p {
        font-family: 'Inter', system-ui, sans-serif;
        font-size: 0.7rem;
        margin: 0.25rem 0;
        letter-spacing: 0.03em;
    }

/* ── Return to Position Button ── */
.return-position {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 500;
    display: none;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: 24px;
    background: var(--slate-deep);
    color: white;
    border: none;
    cursor: pointer;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
    transition: all 0.2s ease;
}

    .return-position:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 24px rgba(0,0,0,0.3);
    }

    .return-position.visible {
        display: inline-flex;
    }

/* ── Note Modal ── */
.note-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(3px);
    z-index: 3000;
    display: none;
    align-items: center;
    justify-content: center;
}

    .note-modal-overlay.open {
        display: flex;
    }

.note-modal {
    background: var(--reader-surface);
    border-radius: 16px;
    padding: 2rem;
    width: 420px;
    max-width: 90vw;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

    .note-modal h4 {
        font-family: 'Cormorant Garamond', Georgia, serif;
        font-size: 1.25rem;
        font-weight: 700;
        margin: 0 0 1rem;
        color: var(--reader-text);
    }

.note-textarea {
    width: 100%;
    min-height: 100px;
    border: 1px solid var(--reader-border);
    border-radius: 10px;
    padding: 0.85rem 1rem;
    font-family: 'Merriweather', Georgia, serif;
    font-size: 0.85rem;
    color: var(--reader-text);
    background: var(--reader-bg);
    resize: vertical;
    outline: none;
    transition: border-color 0.2s ease;
}

    .note-textarea:focus {
        border-color: var(--reader-chapter-accent);
    }

.note-modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 1rem;
}

.note-btn {
    padding: 0.55rem 1.25rem;
    border-radius: 20px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--reader-border);
}

.note-btn-cancel {
    background: transparent;
    color: var(--reader-text-muted);
}

    .note-btn-cancel:hover {
        background: var(--reader-surface-hover);
    }

.note-btn-save {
    background: var(--reader-chapter-accent);
    color: white;
    border-color: var(--reader-chapter-accent);
}

    .note-btn-save:hover {
        opacity: 0.9;
    }

/* ═══════════════════════════════════════════════════════════════
                         HIGHLIGHT STYLES (CSS ONLY)
        ═══════════════════════════════════════════════════════════════ */
.text-highlight {
    background: var(--reader-highlight);
    border-radius: 2px;
    padding: 0 2px;
    cursor: pointer;
    transition: background 0.2s ease;
}

    .text-highlight:hover {
        background: rgba(201, 162, 39, 0.4);
    }

/* ═══════════════════════════════════════════════════════════════
                         RESPONSIVE
        ═══════════════════════════════════════════════════════════════ */
@@media (max-width: 768px) {
    .reader-body {
        padding: 1.25rem 1rem 5rem;
    }

    .cover-title {
        font-size: 1.75rem;
    }

    .chapter-title {
        font-size: 1.35rem;
    }

    .cover-image {
        max-width: 200px;
    }

    .chapter-meta-bar {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .chapter-nav {
        flex-direction: column;
    }

    .chapter-nav-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ═══════════════════════════════════════════════════════════════
                         SCROLLBAR
        ═══════════════════════════════════════════════════════════════ */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--reader-border);
    border-radius: 3px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--reader-text-muted);
    }