/* Levi Studios Library — reader styles (the book you can feel).
   Carried from the owner's library shelf design: warm dark room,
   cream pages, gold trim. */
:root{
  --bg:#171008; --bg-deep:#0f0a05;
  --ink:#f0e4cd; --ink-soft:#c3ab84;
  --gold:#d9a441; --accent:#b35c1e;
  --paper:#f6ead0; --paper-2:#eee0c0; --paper-ink:#332619; --paper-soft:#6d5942;
  --card:#241708; --line:rgba(230,200,140,.2);
  --shadow:0 18px 44px rgba(0,0,0,.6);
  --reader-bg:#120b04;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:ui-sans-serif,system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:
    radial-gradient(120% 60% at 50% -10%, rgba(255,196,92,.28), transparent 60%),
    linear-gradient(180deg,var(--bg),var(--bg-deep));
  color:var(--ink);
  min-height:100vh;
}
.wrap{max-width:1060px;margin:0 auto;padding:20px 16px 56px}
.topline{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:6px 2px 4px}
.topline h1{font-family:Georgia,"Iowan Old Style","Times New Roman",serif;font-size:clamp(26px,5.4vw,40px);line-height:1.05;margin:0;font-weight:700;letter-spacing:.2px}
.topline h1 .studios{color:var(--gold)}
.topline p{margin:6px 0 0;color:var(--ink-soft);font-size:15px;max-width:52ch}
.feel-toggles{display:flex;gap:8px;flex-wrap:wrap}
.toggle{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:8px 13px;font-size:13px;font-weight:600;cursor:pointer;user-select:none}
.toggle .dot{width:9px;height:9px;border-radius:50%;background:#b9a888;flex:none}
.toggle[aria-pressed="true"] .dot{background:#3f9e4d;box-shadow:0 0 0 3px rgba(63,158,77,.22)}
.toggle:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
a{color:var(--gold)}

/* ---------- reader ---------- */
.reader{display:none;margin-top:8px}
.reader.on{display:block}
.reader-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.reader-bar .title{font-family:Georgia,serif;font-weight:700;font-size:19px}
.reader-bar .sub{color:var(--ink-soft);font-size:13px}
.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:9px;padding:9px 14px;font-size:14px;font-weight:650;cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover{border-color:var(--gold)}
.btn:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.stage{
  background:radial-gradient(90% 120% at 50% 0%, rgba(255,190,90,.16), transparent 55%), var(--reader-bg);
  border-radius:16px;padding:clamp(12px,3vw,30px);
  display:flex;flex-direction:column;align-items:center;gap:14px;
  box-shadow:inset 0 0 0 1px rgba(255,215,150,.12), var(--shadow);
}

/* ---------- the open book ---------- */
.book{
  position:relative;width:min(92vw,520px);aspect-ratio:3/4.15;max-height:74vh;
  perspective:1800px;touch-action:none;user-select:none;-webkit-user-select:none;
  cursor:grab;border-radius:4px;box-shadow:0 24px 34px rgba(0,0,0,.5);
}
.book:active{cursor:grabbing}
.book.spread{width:min(96vw,940px);aspect-ratio:3/2;max-height:80vh}
.book.spread .page p{font-size:clamp(13.5px,2.05vw,17.5px)}
.book.spread .page .big{font-size:clamp(21px,3.4vw,30px)}
.page{position:absolute;inset:0;overflow:hidden;color:var(--paper-ink)}
.pg-r{
  border-radius:3px 12px 12px 3px;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.45 0 0 0 0 0.36 0 0 0 0 0.2 0 0 0 .05 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E"),
    linear-gradient(100deg,var(--paper-2) 0%,var(--paper) 7%,var(--paper) 92%,#e9dcbc 100%);
  box-shadow:inset 7px 0 16px rgba(101,72,32,.26), inset -2px 0 5px rgba(101,72,32,.14);
}
.pg-l{
  border-radius:12px 3px 3px 12px;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.45 0 0 0 0 0.36 0 0 0 0 0.2 0 0 0 .05 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E"),
    linear-gradient(260deg,var(--paper-2) 0%,var(--paper) 7%,var(--paper) 92%,#e9dcbc 100%);
  box-shadow:inset -7px 0 16px rgba(101,72,32,.26), inset 2px 0 5px rgba(101,72,32,.14);
}
#pageLeft{left:0;right:auto;width:50%;z-index:1}
#pageRight{right:0;left:auto;width:50%;z-index:1}
.book.single #pageLeft{width:100%}
.book.single #pageRight{display:none}
.spine{
  position:absolute;top:0;bottom:0;left:50%;width:58px;transform:translateX(-50%);
  z-index:2;pointer-events:none;
  background:linear-gradient(90deg, rgba(60,38,10,0) 0%, rgba(60,38,10,.20) 38%, rgba(34,20,3,.42) 50%, rgba(60,38,10,.20) 62%, rgba(60,38,10,0) 100%);
}
.book.single .spine{display:none}
.leaf{position:absolute;top:0;bottom:0;z-index:6;display:none;transform-style:preserve-3d;will-change:transform;pointer-events:none}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.face.back{transform:rotateY(180deg)}
.face::after{
  content:"";position:absolute;inset:0;z-index:3;pointer-events:none;
  background:linear-gradient(90deg, rgba(43,26,4,.5), rgba(43,26,4,0) 60%);
  opacity:var(--sh,0);
}
.face.back::after{background:linear-gradient(270deg, rgba(43,26,4,.5), rgba(43,26,4,0) 60%)}
.page.imgpage{background:var(--paper)}
.page.imgpage .inner{padding:0}
.page-img{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.page-img.fit-contain{object-fit:contain}
.page.inside{
  background:radial-gradient(120% 90% at 50% 30%, rgba(184,134,46,.20), transparent 60%),
  linear-gradient(150deg,#e8d9b4,#d9c48f);
}
.inside-inner{justify-content:center;align-items:center}
.inside-orn{font-size:30px;color:var(--gold);letter-spacing:.3em;text-align:center}
.page.blank{background:linear-gradient(150deg,#46331b,#291c0d)}
.page .inner{position:absolute;inset:0;padding:clamp(20px,6%,34px);display:flex;flex-direction:column;overflow:hidden}
.page p{font-family:Georgia,"Iowan Old Style",serif;font-size:clamp(15.5px,3.9vw,18.5px);line-height:1.62;margin:0 0 12px}
.page .folio{margin-top:10px;text-align:center;font-size:12px;color:var(--paper-soft);font-family:Georgia,serif}
.page.center .inner{justify-content:center;text-align:center;align-items:center}
.page.center p{max-width:34ch}
.page .big{font-family:Georgia,serif;font-size:clamp(24px,6vw,34px);line-height:1.15;margin:0 0 10px}
.edges{
  position:absolute;top:4px;bottom:4px;right:-7px;width:7px;border-radius:0 3px 3px 0;
  background:repeating-linear-gradient(90deg,#efe3c6 0 1px,#c9b586 1px 2px);
  z-index:0;
}

/* ---------- narration bar ---------- */
.narr-bar{display:none;width:100%;max-width:520px;align-items:center;gap:12px;border:1px solid rgba(255,226,170,.3);border-radius:12px;background:rgba(255,246,227,.07);padding:10px 12px}
.narr-bar.on{display:flex}
.reader.spread-on .narr-bar{max-width:640px}
.narr-btn{flex:none;width:46px;height:46px;border-radius:50%;border:1px solid var(--gold);background:var(--accent);color:#ffeec9;font-size:17px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}
.narr-btn:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.narr-mid{flex:1;min-width:0}
.narr-label{color:#f3e6c8;font-size:13.5px;font-weight:650;margin-bottom:5px}
.narr-track{height:6px;border-radius:99px;background:rgba(255,235,200,.18);overflow:hidden;cursor:pointer}
.narr-track i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),#e8b45a);border-radius:99px}
.narr-time{color:#cdb488;font-size:12.5px;font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- dig deeper ---------- */
.dig-panel{display:none;width:100%;max-width:520px;border:1px solid rgba(255,226,170,.3);border-radius:12px;background:rgba(255,246,227,.07);padding:12px 14px}
.dig-panel.on{display:block}
.reader.spread-on .dig-panel{max-width:640px}
.dig-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;background:none;border:0;padding:2px 0;cursor:pointer;text-align:left;color:#f3e6c8;font-size:15px;font-weight:700;font-family:Georgia,serif}
.dig-toggle:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
.dig-toggle .chev{color:var(--gold);font-size:13px;transition:transform .2s ease}
.dig-toggle[aria-expanded="true"] .chev{transform:rotate(180deg)}
.dig-sub{color:#cdb488;font-size:12.5px;margin-top:2px}
.dig-list{display:none;margin-top:10px;flex-direction:column;gap:8px}
.dig-list.open{display:flex}
.dig-item{display:block;text-decoration:none;border:1px solid rgba(255,226,170,.22);border-radius:9px;padding:10px 12px;background:rgba(255,246,227,.05)}
.dig-item:hover{border-color:var(--gold)}
.dig-item:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.dig-item .dig-t{display:block;color:#ffe9b8;font-weight:700;font-size:14.5px}
.dig-item .dig-h{display:block;color:#e9d9b8;font-size:13px;line-height:1.45;margin-top:2px}
.dig-item .dig-go{display:block;color:var(--gold);font-size:12.5px;font-weight:700;letter-spacing:.03em;margin-top:5px}

.reader-foot{width:100%;max-width:520px;display:flex;flex-direction:column;gap:10px}
.reader.spread-on .reader-foot{max-width:640px}
.progress{height:8px;border-radius:99px;background:rgba(255,235,200,.16);overflow:hidden}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),#e8b45a);border-radius:99px;transition:width .3s ease}
.foot-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.page-count{color:#e9d9b8;font-size:13.5px;font-weight:600}
.nav-btns{display:flex;gap:8px}
.nav-btns .btn{background:rgba(255,246,227,.08);color:#f3e6c8;border-color:rgba(255,226,170,.3)}
.drag-hint{color:#cdb488;font-size:13px;text-align:center}

/* ---------- shelf (library index) ---------- */
.promise{margin:16px 2px 0;font-family:Georgia,serif;font-style:italic;font-size:16px;color:var(--ink-soft)}
.promise strong{color:var(--gold);font-style:normal}
.shelf-zone{margin-top:26px}
.shelf-group{margin-top:30px}
.shelf-group:first-child{margin-top:0}
.shelf-head{display:flex;align-items:baseline;gap:12px;margin:0 2px 2px;font-family:Georgia,serif;font-size:clamp(18px,3.4vw,23px);font-weight:700;color:var(--ink)}
.shelf-head::after{content:"";flex:1;height:1px;background:var(--line);align-self:center}
.shelf-head .count{font-family:ui-sans-serif,system-ui,sans-serif;font-size:12.5px;font-weight:700;color:var(--gold);letter-spacing:.06em;white-space:nowrap}
.shelf-board{position:relative;padding:34px 18px 0}
.books-row{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(12px,3.4vw,34px);align-items:end;max-width:1080px;margin:0 auto}
.plank{height:20px;margin:0 auto;max-width:1140px;background:linear-gradient(180deg,#7c5227,#5f3c1e 45%,#452a12);border-radius:3px;box-shadow:0 14px 22px rgba(40,22,4,.35), inset 0 1px 0 rgba(255,220,160,.5)}
.plank-under{height:10px;max-width:1100px;margin:0 auto;background:#452a12;opacity:.55;border-radius:0 0 4px 4px}
.book-pick{border:0;background:none;padding:0;cursor:pointer;text-align:center;display:flex;flex-direction:column;align-items:center;text-decoration:none;color:var(--ink);transition:transform .25s ease}
.book-pick:hover{transform:translateY(-6px)}
.book-pick:focus-visible{outline:2px solid var(--gold);outline-offset:6px;border-radius:6px}
.cover{display:block;position:relative;width:min(100%,218px);aspect-ratio:2/3;border-radius:4px 10px 10px 4px;overflow:hidden;flex:none;box-shadow:0 18px 44px rgba(0,0,0,.6), inset 4px 0 10px rgba(0,0,0,.28);background:#241708}
.cover::before{content:"";position:absolute;left:9px;top:0;bottom:0;width:2px;background:rgba(255,255,255,.22);box-shadow:2px 0 3px rgba(0,0,0,.25);z-index:1}
.cover-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.free-tag{position:absolute;top:12px;right:-30px;transform:rotate(38deg);background:var(--accent);color:#ffeec9;font-size:10px;font-weight:800;letter-spacing:.12em;padding:4px 34px;box-shadow:0 3px 8px rgba(0,0,0,.35);z-index:2}
.book-meta{display:block;width:100%;margin-top:12px}
.book-meta .t{font-family:Georgia,serif;font-weight:700;font-size:16px;display:block}
.book-meta .d{color:var(--ink-soft);font-size:13px;margin-top:2px;display:block}
.open-hint{margin-top:6px;font-size:12.5px;font-weight:700;color:var(--gold);letter-spacing:.04em;display:block}
.how{max-width:880px;margin:30px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.how div{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:12px 14px;font-size:13.5px;color:var(--ink-soft)}
.how b{color:var(--ink);display:block;font-size:14px;margin-bottom:3px}
@media (max-width:640px){
  .books-row{grid-template-columns:repeat(2,1fr);gap:14px 10px}
  .free-tag{font-size:8.5px;padding:3px 26px;top:9px;right:-26px;letter-spacing:.08em}
  .book-meta .t{font-size:13.5px}
  .book-meta .d{font-size:11.5px}
  .open-hint{font-size:11px}
  .how{grid-template-columns:1fr}
}

footer{margin-top:34px;text-align:center;color:var(--ink-soft);font-size:13px}
footer .sig{font-family:Georgia,serif;font-style:italic}
@media (prefers-reduced-motion: reduce){ .progress i{transition:none} }