/* Type and navigation refinements. UI labels retain their clean sans serif. */
:root { --font-display: 'Playfair Display', Georgia, serif; }
h1, h2, .hero-copy h1, .hero-copy h1 em {
    font-family: var(--font-display); font-weight: 500; letter-spacing: -.035em;
}
.hero-copy h1 { line-height: 1.08; }
.mega-toggle { line-height: 1.25; gap: 10px; }
.nav-chevron { width: 16px; height: 16px; display: block; flex: 0 0 16px; align-self: center; }
.nav-chevron path { stroke-linecap: round; stroke-linejoin: round; }
.preview-launch { margin-top: 20px; text-align: center; }
.preview-launch p { font-size: 16px; color: var(--c-text-muted); margin: 10px 0 0; }
.preview-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 13px; font-size: 16px; color: var(--c-primary-accent); }
.reader-is-open { overflow: hidden; }
.book-reader { padding: 0; border: 1px solid var(--c-border, #e2dcce); border-radius: 12px; background: var(--c-cream-bg, #faf8f3); color: var(--c-text-main, #101e2e); width: min(1080px, calc(100vw - 48px)); max-height: calc(100dvh - 40px); margin: auto; overflow: auto; box-shadow: 0 35px 100px rgba(11, 27, 43, 0.45); }
.book-reader[open] { display: flex; flex-direction: column; }
.book-reader:not([open]) { display: none; }
.book-reader::backdrop { background: rgba(11, 27, 43, 0.75); backdrop-filter: blur(8px); }
.reader-header { padding: 22px 30px; display: flex; justify-content: space-between; align-items: center; gap: 25px; border-bottom: 1px solid var(--c-border, #e2dcce); background: var(--c-surface, #ffffff); }
.reader-header .eyebrow { margin-bottom: 7px; font-size: 16px; color: var(--c-primary-accent, #b89047); }
.reader-header h2 { font-family: var(--font-display); font-size: 23px; letter-spacing: -.02em; color: var(--c-primary-ink, #0b1b2b); }
.reader-icon { border: 1px solid var(--c-border, #e2dcce); background: transparent; width: 42px; height: 42px; flex-shrink: 0; border-radius: 50%; display: grid; place-items: center; cursor: pointer; color: var(--c-text-main, #101e2e); transition: all 0.2s; }
.reader-icon:hover { background: var(--c-surface-muted, #f2efe8); border-color: var(--c-primary-accent, #b89047); }
.reader-body { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 35px; padding: 32px 50px; }
.reader-about h3 { font-family: var(--font-display); font-size: 32px; font-weight: 500; line-height: 1.2; margin-bottom: 24px; color: var(--c-primary-ink, #0b1b2b); }
.reader-about p { font-size: 16px; color: var(--c-text-muted, #56677d); max-width: 270px; line-height: 1.8; }
.reader-about .eyebrow { font-size: 16px; letter-spacing: .15em; color: var(--c-primary-accent, #b89047); }
.reader-about .reader-byline { margin-top: 28px; color: var(--c-primary-ink, #0b1b2b); font-weight: 600; font-size: 16px; }
.reader-hint { font-size: 16px; color: var(--c-text-muted, #56677d); display: block; line-height: 1.9; margin-top: 35px; }
.reader-stage { display: flex; justify-content: center; align-items: center; min-width: 0; perspective: 1600px; }
.reader-book { position: relative; width: min(340px, 100%); aspect-ratio: 2 / 3; touch-action: pan-y; transform-style: preserve-3d; }
.reader-current, .reader-flip, .reader-flip-front, .reader-flip-back { position: absolute; inset: 0; }
.reader-paper { height: 100%; width: 100%; position: relative; overflow: auto; background: #fdfaf3; border: 1px solid #e5dfd0; border-radius: 1px 6px 6px 1px; box-shadow: -4px 6px 16px rgba(11,27,43,0.1), 10px 18px 30px rgba(11,27,43,0.12), inset 10px 0 16px -8px rgba(11,27,43,0.08), 3px 1px 0 #ded8c8, 5px 3px 0 #f5efe0; }
.reader-paper:after { content: ''; pointer-events: none; position: absolute; right: 0; bottom: 0; width: 32px; height: 32px; background: linear-gradient(135deg, transparent 47%, rgba(184,144,71,0.25) 50%, #fffdf8 57%, #ece4d2 100%); border-radius: 22px 0 5px 0; }
.reader-title-page { padding: 35px 30px; display: flex; flex-direction: column; justify-content: center; text-align: center; }
.reader-running { font-family: var(--font-sans); font-size: 16px; letter-spacing: .13em; color: var(--c-text-muted, #7e826d); text-transform: uppercase; display: block; }
.reader-title-page .reader-running { position: absolute; top: 32px; left: 24px; right: 24px; }
.reader-title-page h3 { font: 500 30px/1.2 var(--font-display); margin: 25px 0; color: var(--c-primary-ink, #0b1b2b); }
.reader-title-page p { font: italic 16px/1.65 Georgia, serif; color: var(--c-text-muted, #56677d); }
.reader-title-page>span:not(.reader-running) { font-size: 16px; margin-top: 20px; color: var(--c-primary-accent, #b89047); font-weight: 600; }
.reader-title-page small { position: absolute; bottom: 32px; left: 20px; right: 20px; font-size: 16px; letter-spacing: .13em; color: var(--c-text-muted, #7e826d); }
.reader-excerpt-page { padding: 30px 27px 45px; }
.reader-excerpt-label { display: block; font-size: 16px; color: var(--c-primary-accent, #b89047); letter-spacing: .2em; margin-top: 35px; margin-bottom: 20px; font-weight: 700; }
.reader-excerpt-page>p { font: 16px/1.65 Georgia, serif; color: var(--c-text-main, #101e2e); overflow-wrap: anywhere; }
.reader-excerpt-page>p:first-letter { float: left; font: 54px/.9 var(--font-display); margin: 3px 6px 0 0; color: var(--c-primary-accent, #b89047); }
.reader-page-number { position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; font: 16px Georgia, serif; color: var(--c-text-muted, #8a96a6); }
.reader-image-page img { width: 100%; height: 100%; object-fit: contain; }
.reader-cover { padding: 0; overflow: hidden; }
.reader-cover .reader-cover-art { width: 100%; height: 100%; padding: 28px; border-radius: 0; box-shadow: none; }
.reader-cover .reader-cover-art .cover-name { font-size: 36px; line-height: 1.08; margin-top: 25px; }
.reader-cover .reader-cover-art .cover-imprint { font-size: 16px; }
.reader-cover .reader-cover-art .cover-author { font-size: 16px; }
.reader-flip { visibility: hidden; transform-style: preserve-3d; transform-origin: left center; z-index: 10; pointer-events: none; will-change: transform; }
.reader-flip-front, .reader-flip-back { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; transform-style: preserve-3d; border-radius: 1px 6px 6px 1px; overflow: hidden; }
.reader-flip-back { transform: rotateY(180deg); background: #FAF7F0 linear-gradient(90deg, rgba(11,27,43,0.18) 0%, rgba(255,255,255,0.85) 15%, #FAF7F0 65%, rgba(184,144,71,0.1) 100%); border: 1px solid #e5dfd0; box-shadow: inset 18px 0 25px -10px rgba(11,27,43,0.2); }
.reader-flip-front:after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 35%, rgba(11,27,43,0.18) 85%, rgba(255,255,255,0.4) 100%); opacity: 0; pointer-events: none; }
.reader-flip.turn-forward { visibility: visible; animation: leaf-forward 460ms cubic-bezier(0.25, 1, 0.4, 1) forwards; }
.reader-flip.turn-backward { visibility: visible; animation: leaf-backward 460ms cubic-bezier(0.25, 1, 0.4, 1) forwards; }
.turn-forward .reader-flip-front:after, .turn-backward .reader-flip-front:after { animation: leaf-shadow 460ms ease both; }
@keyframes leaf-forward { 0% { transform: rotateY(0deg); } 100% { transform: rotateY(-180deg); } }
@keyframes leaf-backward { 0% { transform: rotateY(-180deg); } 100% { transform: rotateY(0deg); } }
@keyframes leaf-shadow { 0%, 100% { opacity: 0; } 50% { opacity: 0.85; } }
.reader-footer { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 18px 30px; border-top: 1px solid var(--c-border, #e2dcce); background: var(--c-surface, #ffffff); }
.reader-progress { font-size: 16px; text-align: center; color: var(--c-text-muted, #56677d); font-weight: 500; letter-spacing: 0.02em; }
.reader-footer .btn { min-width: 112px; font-size: 16px; }
@media (max-width: 760px) {
    .book-reader { width: calc(100vw - 20px); max-height: calc(100dvh - 24px); border-radius: 8px; }
    .reader-header { padding: 15px 17px; gap: 12px; }
    .book-reader .reader-header h2 { font-size: 18px !important; }
    .reader-header .eyebrow { font-size: 16px; }
    .reader-body { display: block; padding: 20px 20px 24px; }
    .reader-about { display: none; }
    .reader-book { width: min(300px, 100%); }
    .reader-footer { padding: 13px 14px; gap: 8px; }
    .reader-footer .btn { padding: 10px; min-width: 44px; }
    .reader-footer .btn span { display: none; }
    .reader-progress { font-size: 16px; }
    .reader-cover .reader-cover-art .cover-name { font-size: 31px !important; }
    .reader-cover .reader-cover-art .cover-art { height: 42% !important; bottom: 30px !important; }
    .reader-cover .reader-cover-art .cover-author { font-size: 16px; }
    .reader-excerpt-page { padding: 23px 24px 36px; }
    .reader-excerpt-label { margin-top: 24px; margin-bottom: 16px; }
    .reader-excerpt-page>p { font-size: 16px; line-height: 1.6; }
    .reader-title-page h3 { font-size: 26px; }
}
@media (prefers-reduced-motion: reduce) {
    .reader-flip { display: none; }
}