/* =========================================================
 *  FRN BOOK READER — immersive full-screen chapter reader
 *  Themes: tech (default), grit, paper, night, forest
 * ========================================================= */

.frn-book {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: grid;
    grid-template-columns: 300px 1fr;
    grid-template-rows: auto 4px 1fr auto;
    grid-template-areas:
        "top     top"
        "prog    prog"
        "sidebar stage"
        "sidebar bottom";
    font-family: 'Barlow', system-ui, sans-serif;
    overflow: hidden;
    animation: frnBookIn .4s cubic-bezier(.2,.7,.2,1) both;
}
.frn-book[hidden] { display: none; }
@keyframes frnBookIn {
    from { opacity: 0; transform: scale(.98); }
    to   { opacity: 1; transform: scale(1); }
}

/* =========================================================
 *  THEME VARIABLES
 * ========================================================= */

/* TECH — default, blue holographic */
.frn-book[data-theme="tech"] {
    --bk-bg:       #0a1628;
    --bk-bg-2:     #0f2340;
    --bk-panel:    rgba(15, 35, 64, 0.85);
    --bk-border:   rgba(0, 200, 255, 0.25);
    --bk-text:     #e4f0ff;
    --bk-text-dim: #7aa3cc;
    --bk-accent:   #00d4ff;
    --bk-accent-2: #0088ff;
    --bk-glow:     0 0 20px rgba(0, 212, 255, 0.4);
    --bk-grid-op:  0.15;
    --bk-pattern:  linear-gradient(rgba(0,212,255,.05) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(0,212,255,.05) 1px, transparent 1px);
}

/* GRIT — blood red street */
.frn-book[data-theme="grit"] {
    --bk-bg:       #0a0000;
    --bk-bg-2:     #1a0606;
    --bk-panel:    rgba(26, 6, 6, 0.9);
    --bk-border:   rgba(217, 13, 30, 0.3);
    --bk-text:     #f4f1ea;
    --bk-text-dim: #a07070;
    --bk-accent:   #d90d1e;
    --bk-accent-2: #ff3344;
    --bk-glow:     0 0 20px rgba(217, 13, 30, 0.4);
    --bk-grid-op:  0.1;
    --bk-pattern:  radial-gradient(circle at 30% 20%, rgba(217,13,30,.08) 2px, transparent 3px);
}

/* PAPER — warm cream daylight */
.frn-book[data-theme="paper"] {
    --bk-bg:       #ebe6d9;
    --bk-bg-2:     #dcd4c0;
    --bk-panel:    rgba(220, 212, 192, 0.95);
    --bk-border:   rgba(90, 70, 40, 0.25);
    --bk-text:     #2a1f10;
    --bk-text-dim: #6a5d4d;
    --bk-accent:   #8b4a0f;
    --bk-accent-2: #c96d1c;
    --bk-glow:     0 2px 8px rgba(90, 70, 40, 0.15);
    --bk-grid-op:  0;
    --bk-pattern:  repeating-linear-gradient(0deg, rgba(90,70,40,.02) 0 1px, transparent 1px 4px);
}

/* NIGHT — dark with subtle gradient, not pure OLED flat */
.frn-book[data-theme="night"] {
    --bk-bg:       #050508;
    --bk-bg-2:     #14141c;
    --bk-panel:    rgba(15, 15, 20, 0.95);
    --bk-border:   rgba(255, 255, 255, 0.08);
    --bk-text:     #e0e0e0;
    --bk-text-dim: #606060;
    --bk-accent:   #ffffff;
    --bk-accent-2: #a0a0a0;
    --bk-glow:     0 0 0 1px rgba(255, 255, 255, 0.1);
    --bk-grid-op:  0;
    --bk-pattern:  radial-gradient(circle at 30% 20%, rgba(255,255,255,.015) 1px, transparent 2px);
}

/* FOREST — deep jungle green */
.frn-book[data-theme="forest"] {
    --bk-bg:       #061a10;
    --bk-bg-2:     #0a2e1c;
    --bk-panel:    rgba(10, 46, 28, 0.88);
    --bk-border:   rgba(78, 220, 120, 0.2);
    --bk-text:     #e6f4e8;
    --bk-text-dim: #7aa88a;
    --bk-accent:   #4edc78;
    --bk-accent-2: #2ba850;
    --bk-glow:     0 0 20px rgba(78, 220, 120, 0.3);
    --bk-grid-op:  0.08;
    --bk-pattern:  radial-gradient(circle at 50% 50%, rgba(78,220,120,.04) 1px, transparent 2px);
}

/* Apply theme bg + pattern overlay */
.frn-book {
    background:
        var(--bk-pattern),
        radial-gradient(ellipse at 30% 10%, var(--bk-bg-2), var(--bk-bg) 70%);
    background-size: 40px 40px, 100% 100%;
    color: var(--bk-text);
}

/* =========================================================
 *  TOP BAR
 * ========================================================= */
.frn-book__top {
    grid-area: top;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: var(--bk-panel);
    border-bottom: 1px solid var(--bk-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    gap: 20px;
    flex-wrap: wrap;
}

.frn-book__close {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: transparent;
    border: 1px solid var(--bk-border);
    color: var(--bk-text);
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all .2s ease;
}
.frn-book__close:hover {
    background: var(--bk-accent);
    color: var(--bk-bg);
    border-color: var(--bk-accent);
    box-shadow: var(--bk-glow);
}
.frn-book__close svg { flex-shrink: 0; }

.frn-book__title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(18px, 2.2vw, 26px);
    letter-spacing: 3px;
    color: var(--bk-text);
    text-transform: uppercase;
    flex: 1;
    text-align: center;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.frn-book__tools {
    display: flex;
    align-items: center;
    gap: 16px;
}

.frn-book__theme-picker {
    display: flex;
    gap: 6px;
    padding: 4px;
    background: var(--bk-bg);
    border: 1px solid var(--bk-border);
    border-radius: 2px;
}
.frn-book__theme-picker button {
    width: 22px;
    height: 22px;
    border: 1px solid rgba(255,255,255,.2);
    cursor: pointer;
    padding: 0;
    transition: transform .15s ease, border-color .15s ease;
}
.frn-book__theme-picker button:hover { transform: scale(1.15); }
.frn-book__theme-picker button.is-active {
    border-color: var(--bk-accent);
    box-shadow: var(--bk-glow);
}

.frn-book__font {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bk-bg);
    border: 1px solid var(--bk-border);
}
.frn-book__font button {
    background: transparent;
    border: none;
    color: var(--bk-text);
    font-family: 'Bebas Neue', sans-serif;
    font-size: 14px;
    padding: 4px 10px;
    cursor: pointer;
    letter-spacing: 1px;
}
.frn-book__font button:hover { color: var(--bk-accent); }

/* =========================================================
 *  PROGRESS BAR
 * ========================================================= */
.frn-book__progress {
    grid-area: prog;
    background: var(--bk-bg-2);
    position: relative;
    overflow: hidden;
}
.frn-book__progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--bk-accent-2), var(--bk-accent));
    box-shadow: var(--bk-glow);
    width: 0;
    transition: width .4s ease;
}

/* =========================================================
 *  SIDEBAR (Chapter List)
 * ========================================================= */
.frn-book__sidebar {
    grid-area: sidebar;
    background: var(--bk-panel);
    border-right: 1px solid var(--bk-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.frn-book__sidebar-head {
    padding: 28px 24px 18px;
    border-bottom: 1px solid var(--bk-border);
}
.frn-book__sidebar-head .frn-kicker {
    display: block;
    font-family: 'Special Elite', monospace;
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--bk-accent);
    margin-bottom: 6px;
}
.frn-book__sidebar-head h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 24px;
    letter-spacing: 3px;
    margin: 0;
    color: var(--bk-text);
    text-transform: uppercase;
}

.frn-book__chapter-list {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
}
.frn-book__chapter-list li { margin: 0; }
.frn-book__chapter-list button {
    width: 100%;
    display: flex;
    align-items: baseline;
    gap: 14px;
    padding: 16px 24px;
    background: transparent;
    border: none;
    border-left: 3px solid transparent;
    color: var(--bk-text-dim);
    text-align: left;
    cursor: pointer;
    font-family: 'Barlow', sans-serif;
    font-size: 14px;
    transition: all .2s ease;
    border-bottom: 1px solid var(--bk-border);
}
.frn-book__chapter-list button:hover {
    background: var(--bk-bg);
    color: var(--bk-text);
    border-left-color: var(--bk-accent-2);
}
.frn-book__chapter-list button.is-active {
    background: var(--bk-bg);
    color: var(--bk-text);
    border-left-color: var(--bk-accent);
    box-shadow: inset 0 0 30px rgba(0,0,0,.2);
}
.frn-book__chapter-num {
    font-family: 'Special Elite', monospace;
    font-size: 11px;
    color: var(--bk-accent);
    letter-spacing: 1px;
    flex-shrink: 0;
}
.frn-book__chapter-title {
    font-weight: 500;
    line-height: 1.3;
}

.frn-book__sidebar-foot {
    padding: 16px 24px;
    border-top: 1px solid var(--bk-border);
    background: var(--bk-bg);
}
.frn-book__sidebar-foot span {
    display: block;
    font-family: 'Special Elite', monospace;
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--bk-text-dim);
    margin-bottom: 2px;
}
.frn-book__sidebar-foot strong {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 2px;
    color: var(--bk-accent);
}

/* =========================================================
 *  STAGE (Reader Content)
 * ========================================================= */
.frn-book__stage {
    grid-area: stage;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
    scroll-behavior: smooth;
}
.frn-book__stage::-webkit-scrollbar { width: 10px; }
.frn-book__stage::-webkit-scrollbar-track { background: var(--bk-bg); }
.frn-book__stage::-webkit-scrollbar-thumb {
    background: var(--bk-border);
    border: 2px solid var(--bk-bg);
}
.frn-book__stage::-webkit-scrollbar-thumb:hover { background: var(--bk-accent); }

.frn-book__page {
    display: none;
    max-width: 760px;
    margin: 0 auto;
    padding: 80px 60px 120px;
    animation: frnPageIn .5s cubic-bezier(.2,.7,.2,1) both;
    position: relative;
}
.frn-book__page.is-active { display: block; }

/* Legacy .frn-book__chapter-video class — kept for backward compat but hidden.
   New videos use .frn-book__page-bg-video inside <article> with has-bg class. */
.frn-book__chapter-video { display: none; }

@keyframes frnPageIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.frn-book__page-meta {
    font-family: 'Special Elite', monospace;
    font-size: 12px;
    letter-spacing: 4px;
    color: var(--bk-accent);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--bk-border);
    display: flex;
    align-items: center;
    gap: 10px;
}
.frn-book__page-meta::before {
    content: '';
    width: 8px; height: 8px;
    background: var(--bk-accent);
    border-radius: 50%;
    box-shadow: var(--bk-glow);
    animation: frnPulse 2s ease-in-out infinite;
}
@keyframes frnPulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: .4; }
}

.frn-book__page-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(42px, 6vw, 72px);
    letter-spacing: 3px;
    line-height: 1;
    margin: 0 0 50px;
    color: var(--bk-text);
    text-transform: uppercase;
    position: relative;
}
.frn-book__page-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: var(--bk-accent);
    margin-top: 20px;
    box-shadow: var(--bk-glow);
}

.frn-book__page-body {
    font-family: 'Crimson Pro', 'Lora', Georgia, serif;
    font-size: var(--bk-font-size, 19px);
    line-height: 1.75;
    color: var(--bk-text);
    font-weight: 400;
    letter-spacing: 0.01em;
}
.frn-book__page-body p {
    margin: 0 0 1.4em;
    text-indent: 2em;
}
.frn-book__page-body p:first-of-type { text-indent: 0; }
.frn-book__page-body p:first-of-type::first-letter {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 5em;
    float: left;
    line-height: .85;
    padding: 6px 12px 0 0;
    color: var(--bk-accent);
    text-shadow: var(--bk-glow);
}
.frn-book__page-body h1,
.frn-book__page-body h2,
.frn-book__page-body h3 {
    font-family: 'Bebas Neue', sans-serif;
    letter-spacing: 2px;
    color: var(--bk-text);
    margin: 2em 0 .8em;
    text-transform: uppercase;
}
.frn-book__page-body h2 { font-size: 1.8em; }
.frn-book__page-body h3 { font-size: 1.4em; }
.frn-book__page-body blockquote {
    margin: 2em 0;
    padding: 20px 30px;
    border-left: 3px solid var(--bk-accent);
    background: var(--bk-bg-2);
    font-style: italic;
    color: var(--bk-text-dim);
}
.frn-book__page-body hr {
    border: none;
    text-align: center;
    margin: 3em 0;
    height: 20px;
}
.frn-book__page-body hr::before {
    content: '◆ ◆ ◆';
    color: var(--bk-accent);
    letter-spacing: 10px;
    font-size: 12px;
}
.frn-book__page-body strong { color: var(--bk-accent); }

/* =========================================================
 *  BOTTOM BAR
 * ========================================================= */
.frn-book__bottom {
    grid-area: bottom;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 30px;
    background: var(--bk-panel);
    border-top: 1px solid var(--bk-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.frn-book__nav {
    background: transparent;
    border: 1px solid var(--bk-border);
    color: var(--bk-text);
    padding: 10px 24px;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all .2s ease;
}
.frn-book__nav:hover:not(:disabled) {
    background: var(--bk-accent);
    color: var(--bk-bg);
    border-color: var(--bk-accent);
    box-shadow: var(--bk-glow);
}
.frn-book__nav:disabled {
    opacity: .3;
    cursor: not-allowed;
}
.frn-book__counter {
    font-family: 'Special Elite', monospace;
    font-size: 13px;
    letter-spacing: 2px;
    color: var(--bk-text-dim);
}
.frn-book__counter [data-current] {
    color: var(--bk-accent);
    font-weight: bold;
}

/* =========================================================
 *  LOCKED / EMPTY STATE
 * ========================================================= */
.frn-book__locked {
    grid-area: sidebar / sidebar / bottom / stage;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 40px;
    color: var(--bk-text);
}
.frn-book__locked svg {
    color: var(--bk-accent);
    margin-bottom: 20px;
    filter: drop-shadow(var(--bk-glow));
}
.frn-book__locked h2 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(28px, 7vw, 42px);
    letter-spacing: 3px;
    margin: 0 0 16px;
    text-transform: uppercase;
    color: var(--bk-text);
    word-break: break-word;
    max-width: 100%;
}
.frn-book__locked p {
    max-width: 440px;
    font-size: 16px;
    line-height: 1.6;
    color: var(--bk-text-dim);
    margin: 0 0 30px;
}

/* =========================================================
 *  "Read the Book" BUTTON (opens the reader)
 * ========================================================= */
.frn-grit-site .frn-book-button-wrap {
    display: flex;
    justify-content: center;
    padding: 50px 20px 20px;
}
.frn-grit-site .frn-btn--book {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 22px 60px;
    background: linear-gradient(135deg, #0a1628, #0f2340);
    color: #e4f0ff;
    border: 2px solid #00d4ff;
    clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
    font-family: 'Bebas Neue', sans-serif;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all .3s ease;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.3), 4px 4px 0 #000;
}
.frn-grit-site .frn-btn--book::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(0,212,255,.2), transparent);
    transform: translateX(-100%);
    transition: transform .6s ease;
}
.frn-grit-site .frn-btn--book:hover {
    transform: translate(-2px, -2px);
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.6), 6px 6px 0 #000;
}
.frn-grit-site .frn-btn--book:hover::before {
    transform: translateX(100%);
}
.frn-grit-site .frn-btn--book .frn-btn__icon {
    font-size: 22px;
    color: #00d4ff;
    text-shadow: 0 0 10px #00d4ff;
}
.frn-grit-site .frn-btn--book .frn-btn__label {
    font-size: 28px;
    letter-spacing: 5px;
    text-transform: uppercase;
}
.frn-grit-site .frn-btn--book .frn-btn__sub {
    font-family: 'Special Elite', monospace;
    font-size: 11px;
    letter-spacing: 3px;
    color: #7aa3cc;
    text-transform: uppercase;
}

/* =========================================================
 *  BODY LOCK (when book is open)
 * ========================================================= */
body.frn-book-open { overflow: hidden; }

/* =========================================================
 *  RESPONSIVE — BOOK READER MOBILE
 * ========================================================= */
@media (max-width: 900px) {
    .frn-book {
        grid-template-columns: 1fr;
        grid-template-areas:
            "top"
            "prog"
            "stage"
            "bottom";
    }
    .frn-book__sidebar { display: none; }
    .frn-book__sidebar.is-open {
        display: flex;
        position: fixed;
        inset: 0;
        z-index: 10;
    }
    .frn-book__title { display: none; }

    /* Compress top bar - two rows max, smaller controls */
    .frn-book__top {
        padding: 8px 10px;
        gap: 6px;
        flex-wrap: wrap;
        min-height: 52px;
    }
    .frn-book__close {
        padding: 6px 10px;
        font-size: 11px;
        letter-spacing: 1px;
    }
    .frn-book__close svg { width: 16px; height: 16px; }
    .frn-book__close span { letter-spacing: 1px; }
    .frn-book__tools {
        gap: 4px;
        flex-wrap: wrap;
    }
    .frn-book__video-ctrl {
        padding: 2px;
    }
    .frn-book__video-ctrl button {
        padding: 2px 8px;
        font-size: 13px;
    }
    .frn-book__fs-btn {
        padding: 6px 8px;
    }
    .frn-book__fs-btn svg { width: 14px; height: 14px; }
    .frn-book__theme-picker button {
        width: 20px;
        height: 20px;
    }
    .frn-book__font button {
        padding: 4px 8px;
        font-size: 11px;
    }

    /* Pages get proper horizontal padding so text doesn't hit edges */
    .frn-book__page {
        padding: 30px 20px 90px;
    }
    .frn-book__page-meta {
        font-size: 10px;
        letter-spacing: 2px;
        margin-bottom: 14px;
        padding-bottom: 12px;
        gap: 8px;
    }
    .frn-book__page-title {
        font-size: clamp(26px, 7vw, 34px);
        letter-spacing: 2px;
        margin: 0 0 24px;
        word-break: break-word;
        overflow-wrap: break-word;
    }
    .frn-book__page-title::after {
        width: 50px;
        height: 2px;
        margin-top: 12px;
    }
    .frn-book__page-body {
        font-size: 15px;
        line-height: 1.7;
    }
    .frn-book__page-body p {
        text-indent: 1.2em;
        margin-bottom: 1.1em;
    }

    /* Cover page — massive font was destroying mobile */
    .frn-book__cover-content {
        padding: 40px 24px;
    }
    .frn-book__cover-kicker {
        font-size: 10px;
        letter-spacing: 3px;
        margin-bottom: 16px;
    }
    .frn-book__cover-title {
        font-size: clamp(54px, 15vw, 80px) !important;
        letter-spacing: 4px !important;
        line-height: .9;
        word-break: break-word;
    }
    .frn-book__cover-subtitle {
        font-size: clamp(14px, 4vw, 18px);
        letter-spacing: 3px;
        margin: 8px 0 24px;
    }
    .frn-book__cover-divider {
        margin-bottom: 24px;
    }
    .frn-book__cover-credits {
        flex-direction: column;
        gap: 14px;
        margin-bottom: 28px;
    }
    .frn-book__cover-credit span {
        font-size: 9px;
        letter-spacing: 1.5px;
    }
    .frn-book__cover-credit strong {
        font-size: 16px;
        letter-spacing: 1.5px;
    }
    .frn-book__cover-cta button {
        padding: 14px 32px;
        font-size: 18px;
        letter-spacing: 3px;
    }
    .frn-book__cover-foot {
        font-size: 9px;
        letter-spacing: 2px;
        gap: 10px;
    }

    /* Bottom nav - more breathing room */
    .frn-book__bottom {
        padding: 12px 14px;
        gap: 8px;
        flex-wrap: wrap;
    }
    .frn-book__nav {
        padding: 8px 14px;
        font-size: 12px;
        letter-spacing: 1px;
        min-width: 0;
    }
    .frn-book__counter {
        font-size: 11px;
    }
}

/* Extra small phones */
@media (max-width: 420px) {
    .frn-book__top {
        padding: 6px 8px;
    }
    .frn-book__close span { display: none; }
    .frn-book__close { padding: 6px 8px; }
    .frn-book__theme-picker { display: none; } /* hide theme swatches on tiny screens */
    .frn-book__page {
        padding: 24px 16px 80px;
    }
    .frn-book__page-title {
        font-size: clamp(22px, 7vw, 28px);
    }
    .frn-book__cover-title {
        font-size: clamp(44px, 14vw, 60px) !important;
        letter-spacing: 3px !important;
    }
    .frn-book__cover-credit strong { font-size: 14px; }
}

/* ============================================================
 *  v2.3.0 BOOK MOBILE TYPOGRAPHY PASS
 *  Tighter padding, better fonts, cleaner reading experience
 * ============================================================ */

@media (max-width: 900px) {
    .frn-book__page-body {
        font-size: 17px;
        line-height: 1.7;
    }
    .frn-book__page-body p {
        text-indent: 1em;
        margin: 0 0 1.1em;
    }
    .frn-book__page-body p:first-of-type::first-letter {
        font-size: 3.8em;
        padding: 4px 10px 0 0;
    }
}

@media (max-width: 640px) {
    .frn-book__page {
        padding: 24px 20px 80px;
    }
    .frn-book__page-body {
        font-size: 16px;
        line-height: 1.68;
    }
    .frn-book__page-body p {
        text-indent: 0.8em;
        margin: 0 0 1em;
    }
    .frn-book__page-body p:first-of-type::first-letter {
        font-size: 3.2em;
        padding: 2px 8px 0 0;
        line-height: .9;
    }
    .frn-book__page-meta {
        font-size: 9px;
        letter-spacing: 1.5px;
        margin-bottom: 12px;
        padding-bottom: 10px;
        gap: 6px;
    }
    .frn-book__page-title {
        font-size: 26px;
        letter-spacing: 1.5px;
        margin: 0 0 20px;
    }
    .frn-book__page-title::after {
        width: 40px;
        margin-top: 10px;
    }
}

@media (max-width: 420px) {
    .frn-book__page {
        padding: 20px 16px 70px;
    }
    .frn-book__page-body {
        font-size: 15.5px;
        line-height: 1.65;
    }
    .frn-book__page-body p {
        text-indent: 0.6em;
    }
    .frn-book__page-body p:first-of-type::first-letter {
        font-size: 2.8em;
    }
    .frn-book__page-title {
        font-size: 22px;
        letter-spacing: 1px;
    }
}

/* Font size picker sets base --bk-font-size; honor it above mobile floors */
@media (max-width: 640px) {
    .frn-book[style*="--bk-font-size"] .frn-book__page-body {
        font-size: var(--bk-font-size) !important;
    }
}

/* ============================================================
 *  BOOK COVER — image + video background
 * ============================================================ */
.frn-book__cover {
    display: none;
    position: relative;
    overflow: hidden;
    min-height: 80vh;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
}
.frn-book__cover.is-active {
    display: flex;
    animation: frnPageIn .6s cubic-bezier(.2,.7,.2,1) both;
}
@media (max-width: 640px) {
    .frn-book__cover {
        min-height: 100vh;
        padding: 40px 20px;
    }
}
.frn-book__cover-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 0;
    opacity: 0.6;
    pointer-events: none;
}
.frn-book__cover-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
    z-index: 1;
}
.frn-book__cover-content {
    position: relative;
    z-index: 2;
}
/* Ensure cover-bg gradient overlay stays readable above image/video */
.frn-book__cover-bg {
    z-index: 1;
    background: radial-gradient(ellipse at center, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.75) 100%);
}

/* ============================================================
 *  MOBILE POLISH — fix nav bar covering chapter text
 * ============================================================ */
@media (max-width: 640px) {
    .frn-book__page {
        padding: 60px 20px 180px;
    }
    .frn-book__nav {
        padding: 14px 12px;
    }
}

/* ============================================================
 *  CHAPTER BACKGROUNDS — image / video / layered
 *  Mirrors the cover page treatment for any chapter
 * ============================================================ */
.frn-book__page.has-bg {
    position: relative;
    overflow: hidden;
}
.frn-book__page-bg-image,
.frn-book__page-bg-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    pointer-events: none;
    z-index: 0;
}
.frn-book__page-bg-video { z-index: 1; }
.frn-book__page-bg-scrim {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center,
        rgba(0,0,0,0.3) 0%,
        rgba(0,0,0,0.75) 75%,
        rgba(0,0,0,0.9) 100%);
    z-index: 2;
    pointer-events: none;
}
.frn-book__page.has-bg .frn-book__page-content {
    position: relative;
    z-index: 3;
}
.frn-book__page-content {
    /* Default - no bg - content just flows normally */
}
/* Ensure readable text stays readable over busy backgrounds */
.frn-book__page.has-bg .frn-book__page-body,
.frn-book__page.has-bg .frn-book__page-title {
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

/* ============================================================
 *  CHAPTER MEDIA BOX — v2.9.1 simple visible video/image above body
 *  No opacity tricks, no absolute positioning, no conflicts.
 *  Just a clean box with controls. Works everywhere.
 * ============================================================ */
.frn-chapter-media {
    margin: 24px 0 32px;
    width: 100%;
    max-width: 100%;
    border-radius: 6px;
    overflow: hidden;
    background: rgba(0,0,0,0.4);
    border: 1px solid var(--bk-border, rgba(255,255,255,0.1));
    box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.frn-chapter-media__video,
.frn-chapter-media__image {
    display: block;
    width: 100%;
    height: auto;
    max-height: 480px;
    object-fit: cover;
    background: #000;
}
.frn-chapter-media__video {
    aspect-ratio: 16 / 9;
    max-height: none;
}
@media (max-width: 640px) {
    .frn-chapter-media {
        margin: 18px 0 24px;
        border-radius: 4px;
    }
    .frn-chapter-media__image { max-height: 280px; }
}