:root{--bg:#fff;--text:#171512;--muted:#6f675c;--line:#ded5c7;--card:#f7f1e7;--gold:#b78324;--green:#12845d}
body.dark{--bg:#111;--text:#f7f1e7;--muted:#bdb3a6;--line:#39342d;--card:#1c1915}
body.sepia{--bg:#f2e7d1;--text:#3d3124;--muted:#75634e;--line:#d2bea0;--card:#eadbc0}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif;transition:.2s}
.reader-header{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:12px 22px;background:var(--bg);border-bottom:1px solid var(--line)}
.reader-left,.reader-right{display:flex;gap:12px;align-items:center}
.reader-right{justify-content:flex-end;position:relative}
.reader-center{font-size:13px;color:var(--muted)}
.library-link{color:inherit;text-decoration:none;font-weight:800}
.icon-button{width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:var(--card);color:inherit;cursor:pointer}
.progress-wrapper{position:sticky;top:65px;height:3px;background:var(--line);z-index:19}
.progress-bar{height:100%;background:var(--gold);width:0;transition:.25s}
.book-hero{text-align:center;padding:54px 20px}
.book-hero-cover{width:min(260px,70vw);max-height:390px;object-fit:contain;filter:drop-shadow(0 22px 28px rgba(0,0,0,.2))}
.book-hero-title{font-family:Georgia,serif;font-size:clamp(38px,6vw,62px);margin:22px 0 10px}
.book-hero-subtitle{color:var(--muted);font-size:18px}
.book-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:20px}
.meta-pill{padding:7px 11px;border:1px solid var(--line);border-radius:999px}
.start-reading-btn{padding:13px 19px;border:0;border-radius:9px;background:#111;color:#fff;font-weight:900;cursor:pointer}
.reader-container{max-width:860px;margin:auto;padding:30px 24px}
.chapter{display:none}
.chapter.active{display:block}
.chapter h2{font-family:Georgia,serif;font-size:clamp(30px,4vw,42px)}
.chapter p{font-family:Georgia,serif;font-size:19px;line-height:1.9}
.reader-navigation{max-width:860px;margin:0 auto 80px;padding:0 24px;display:flex;justify-content:space-between;gap:12px}
.reader-navigation button{min-width:116px;min-height:46px;padding:13px 18px;border:1px solid #111;border-radius:9px;background:#111;color:#fff;font-weight:800;cursor:pointer}
.reader-navigation button:disabled{border-color:#d3ccc0;background:#e8e2d8;color:#665f55;opacity:1;cursor:not-allowed}
.contents-drawer{position:fixed;inset:0 auto 0 -340px;width:min(340px,88vw);z-index:50;background:var(--bg);border-right:1px solid var(--line);transition:left .25s;overflow:auto}
.contents-drawer.active{left:0}
.drawer-header{display:flex;justify-content:space-between;align-items:center;padding:18px}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{padding:14px 18px;border-top:1px solid var(--line);color:inherit;text-decoration:none}
.theme-menu{display:none;position:absolute;right:0;top:48px;gap:6px;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:0 14px 38px rgba(0,0,0,.16)}
.theme-menu.active{display:flex;flex-direction:row}
.theme-menu button{display:grid;place-items:center;width:44px;height:44px;padding:0;border:1px solid transparent;border-radius:10px;background:transparent;color:inherit;font-size:24px;line-height:1;cursor:pointer}
.theme-menu button:hover{background:var(--card);border-color:var(--line)}
.theme-menu button.selected{border-color:var(--gold);background:var(--card);color:var(--gold)}
.preview-popup{display:none;position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.78);padding:20px;align-items:center;justify-content:center}
.preview-popup.active{display:flex}
.popup-content{position:relative;width:min(820px,100%);max-height:calc(100vh - 32px);overflow:auto;background:var(--bg);border-radius:18px;padding:30px 36px}
.popup-close{position:absolute;right:18px;top:14px;border:0;background:none;color:inherit;font-size:26px}
.popup-kicker{color:var(--gold);font-weight:900;text-transform:uppercase;letter-spacing:.12em;font-size:11px}
.popup-content h2{max-width:680px;margin:12px 42px 12px 0;font-family:Georgia,serif;font-size:clamp(28px,4vw,36px);line-height:1.08}
.recommendation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.recommendation-card{display:grid;grid-template-columns:88px 1fr;gap:14px;padding:12px;border:1px solid var(--line);background:var(--card);border-radius:12px}
.recommendation-card img{width:88px;height:126px;object-fit:contain}
.recommendation-card h4{margin:7px 0}
.recommendation-card p{font-size:13px;color:var(--muted)}
.recommendation-card a{color:var(--gold);font-weight:800}
.popup-actions{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 24px}
.popup-actions a,.popup-actions button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;padding:12px 16px;border:1px solid var(--line);border-radius:9px;background:var(--card);color:inherit;text-decoration:none;font-weight:800;cursor:pointer}
.popup-actions .whatsapp-link{background:#111;border-color:#111;color:#fff;box-shadow:inset 4px 0 #25d366}
.popup-privacy{font-size:12px;color:var(--muted)}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
@media(max-width:650px){.reader-header{grid-template-columns:auto 1fr auto;gap:8px;padding:9px 12px}
.reader-left{gap:7px;min-width:0}.reader-center{display:block;min-width:0;text-align:center;font-size:11px;white-space:nowrap}.reader-right{min-width:40px}.library-link{font-size:12px;white-space:nowrap}.icon-button{width:40px;height:40px}
.recommendation-grid{grid-template-columns:1fr}
.preview-popup{padding:8px}.popup-content{max-height:calc(100vh - 16px);padding:24px 18px}.popup-content h2{font-size:28px}.popup-rating{padding:15px}.rating-star{min-width:42px;min-height:42px;font-size:31px}.popup-actions{display:grid;grid-template-columns:1fr}.popup-actions a,.popup-actions button{width:100%}
.reader-navigation button{flex:1}
}
@media(max-width:380px){
.reader-header{grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"left right" "center center";gap:6px 8px;padding:8px 10px 7px}
.reader-left{grid-area:left}.reader-right{grid-area:right}.reader-center{grid-area:center;justify-self:stretch;text-align:left;padding-left:1px;line-height:1.35}
.library-link{display:flex;min-width:0;align-items:center;gap:5px;overflow:hidden;white-space:nowrap}.library-link span{overflow:hidden;text-overflow:ellipsis}.progress-wrapper{top:79px}
.reader-container{padding-left:18px;padding-right:18px}.chapter-conclusion{padding:19px}.chapter p{font-size:18px;line-height:1.78}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}
}
.preview-format-note{max-width:720px;margin:20px auto;color:var(--muted);line-height:1.7}
.first-page-notice{margin-bottom:26px;padding:18px 20px;border:1px solid var(--gold);border-radius:12px;background:var(--card);line-height:1.65}
.chapter-format-label{display:inline-block;color:var(--gold);font-size:11px;font-weight:900;letter-spacing:.13em;text-transform:uppercase}
.chapter-conclusion{padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.popup-rating{margin:18px 0 14px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.popup-rating h3{margin:0 0 8px;font-family:Georgia,serif;font-size:24px}
.rating-stars{display:flex;gap:5px;margin:12px 0}
.rating-star{border:0;background:transparent;color:#aaa;font-size:34px;line-height:1;cursor:pointer;padding:2px}
.rating-star.selected{color:var(--gold)}
.rating-status,.rating-disclosure{color:var(--muted);font-size:13px;line-height:1.55}
body.dark .icon-button{border-color:#665c4c;background:#29251f;color:#fff}
body.dark .icon-button:hover{border-color:var(--gold);background:#343029}
body.dark .reader-navigation button:not(:disabled){border-color:#d2a34d;background:#d2a34d;color:#15110a}
body.dark .reader-navigation button:disabled{border-color:#514a40;background:#29251f;color:#a9a095}
body.dark .theme-menu{border-color:#665c4c;background:#181613;box-shadow:0 16px 42px rgba(0,0,0,.55)}
body.dark .theme-menu button{color:#f7f1e7}
body.dark .theme-menu button:hover{border-color:#665c4c;background:#29251f}
body.dark .theme-menu button.selected{border-color:#d2a34d;background:#332b1d;color:#f1c66f}
body.dark .popup-actions a:not(.whatsapp-link),body.dark .popup-actions button{border-color:#665c4c;background:#29251f;color:#fff}
body.dark .drawer-links a:hover{background:#29251f;color:#f1c66f}

/* Large-screen reader: scale the shell, preserve a comfortable line length. */
@media(min-width:1600px){
  .reader-header{padding:15px 40px}
  .reader-center{font-size:14px}
  .book-hero{padding:76px 28px}
  .book-hero-cover{width:300px;max-height:450px}
  .book-hero-title{font-size:68px}
  .book-hero-subtitle{font-size:20px}
  .reader-container,.reader-navigation{max-width:980px}
  .reader-container{padding:48px 32px}
  .chapter h2{font-size:46px}
  .chapter p{font-size:20px;line-height:1.95}
  .chapter-conclusion{padding:32px}
  .reader-navigation{padding-inline:32px;margin-bottom:100px}
  .popup-content{width:min(940px,100%);padding:40px 44px}
  .recommendation-card{grid-template-columns:110px 1fr;padding:16px}
  .recommendation-card img{width:110px;height:158px}
}

@media(min-width:2560px){
  .reader-header{padding:18px 56px}
  .book-hero{padding:94px 32px}
  .book-hero-cover{width:340px;max-height:510px}
  .book-hero-title{font-size:76px}
  .book-hero-subtitle{font-size:22px}
  .reader-container,.reader-navigation{max-width:1040px}
  .reader-container{padding:56px 36px}
  .chapter h2{font-size:50px}
  .chapter p{font-size:21px;line-height:2}
  .popup-content{width:min(1040px,100%);padding:48px 52px}
}