:root{
	--fontSize: 4.5mm;
  --bg:#0b0f16;
  --glass: rgba(18, 22, 32, .55);
  --stroke: rgba(255,255,255,.12);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.65);
  --accent: rgba(160, 196, 255, .95);
  --shadow: 0 20px 60px rgba(0,0,0,.55);
  --radius: 18px;
  --blur: 18px;
  --maxw: 860px;
  --line: 1.75;
  --font: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  /* matematyczny gradient tła */
  background:
    radial-gradient(1200px 700px at 20% 10%, rgba(70,95,150,.35), transparent 60%),
    radial-gradient(900px 600px at 90% 20%, rgba(120,70,140,.25), transparent 55%),
    radial-gradient(900px 700px at 50% 90%, rgba(30,120,120,.20), transparent 60%),
    linear-gradient(180deg, #070a10 0%, #0b0f16 40%, #070a10 100%);
  overflow-x:hidden;
  /* nieruchome tło */
  background-repeat: no-repeat, no-repeat, no-repeat, no-repeat;
  background-size: cover, cover, cover, cover;
  background-position: center, center, center, center;
  background-attachment: fixed, fixed, fixed, fixed;
}

img{max-width:100%; display:block}
button{font:inherit}

.bg-noise{
  position:fixed; inset:0;
  pointer-events:none;
  opacity:.08;
  background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="160" height="160"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency=".8" numOctaves="4" stitchTiles="stitch"/></filter><rect width="160" height="160" filter="url(%23n)"/></svg>');
  mix-blend-mode:overlay;
}

.wrap{min-height:100%; padding:28px 16px 36px}

.topbar{
  max-width:var(--maxw);
  margin:0 auto 16px;
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
}

.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:inherit}
.brand .dot{
  width:14px;height:14px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 18px rgba(160,196,255,.55);
}
.brand .title{font-weight:650; letter-spacing:.2px; opacity:.95}
.brand .sub{font-size:12px; color:var(--muted); margin-top:2px}

.shell{max-width:var(--maxw); margin:0 auto; position:relative}

/* ---------- Catalog ---------- */
.catalog{padding:14px}
.catalogHeader{padding:10px 10px 14px; border-bottom:1px solid var(--stroke)}
.catalogTitle{font-weight:760; letter-spacing:.2px}
.catalogSub{margin-top:6px; font-size:12px}
.catalogGrid{
  padding:14px 6px 6px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap:12px;
}
@media (max-width: 980px){
  .catalogGrid{grid-template-columns: repeat(2, minmax(0, 1fr));}
}
@media (max-width: 520px){
  .catalogGrid{grid-template-columns: 1fr;}
}

.bookCard{
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  border-radius:18px;
  padding:10px;
  cursor:pointer;
  color:var(--text);
  text-align:left;
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.bookCard:hover{background:rgba(255,255,255,.09)}
.bookCoverWrap{width:76px; flex:0 0 auto}
.bookCover{
  width:76px; height:104px;
  object-fit:cover;
  border-radius:12px;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.05);
}
.bookCoverPlaceholder{width:76px; height:104px; border-radius:12px; border:1px solid var(--stroke); background:rgba(255,255,255,.04)}
.bookInfo{min-width:0; flex:1}
.bookRow{display:flex; gap:10px; align-items:center; justify-content:space-between}
.bookName{font-weight:720; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.badge{
  font-size:11px;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.8);
  flex:0 0 auto;
}
.bookDesc{margin-top:6px; font-size:12px; color:var(--muted); line-height:1.35;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}

.glass{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

.main{
  display:grid;
  grid-template-columns: 320px 1fr;
  gap:14px;
}
@media (max-width: 980px){
  .main{grid-template-columns: 1fr}
}

.toc{
  position:sticky;
  top:16px;
  align-self:start;
  overflow:hidden;
}
.tocHeader{
  display:flex; gap:10px; align-items:center; justify-content:space-between;
  padding:12px 12px 10px;
  border-bottom:1px solid var(--stroke);
}

.tocHeader .bookLink{display:flex; gap:12px; align-items:center; min-width:0; width:100%; text-decoration:none; color:inherit}

.tocHeader .book{display:flex; gap:12px; align-items:center; min-width:0}
.coverThumb{
  width:46px; height:62px;
  border-radius:10px;
  overflow:hidden;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.06);
  flex:0 0 auto;
}
.coverThumb img{width:100%;height:100%; object-fit:cover}
.bookMeta{min-width:0}
.bookMeta .bookTitle{font-weight:700; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.bookMeta .bookHint{font-size:12px; color:var(--muted); white-space:normal; overflow:hidden; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical}

.tocList{
  max-height: calc(100vh - 200px);
  overflow:auto;
  padding:10px;
}

.chapterBtn{
  width:100%;
  display:flex; gap:10px;
  padding:10px 10px;
  border-radius:14px;
  border:1px solid transparent;
  background:transparent;
  color:var(--text);
  cursor:pointer;
  text-align:left;
}
.chapterBtn:hover{background:rgba(255,255,255,.05); border-color:rgba(255,255,255,.06)}
.chapterBtn.active{background:rgba(160,196,255,.08); border-color:rgba(160,196,255,.25)}
.chapterBtn .num{
  font-family:var(--mono);
  font-size:12px;
  color:var(--muted);
  width:46px;
  flex:0 0 auto;
}
.chapterBtn .ctitle{
  font-size:14px;
  line-height:1.2;
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.chapterBtn .chev{margin-left:auto; opacity:.35}

.reader{padding:0; overflow:hidden}
.readerHeader{
  display:flex; gap:10px; align-items:center; justify-content:space-between;
  padding:12px 14px;
  border-bottom:1px solid var(--stroke);
}
.readerHeader .left{min-width:0}
.readerHeader .hTitle{font-weight:760; letter-spacing:.2px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.readerHeader .hSub{font-size:12px; color:var(--muted); margin-top:2px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}

.controls{display:flex; gap:8px; flex-wrap:wrap; float:right;}
.btn{
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  color:var(--text);
  border-radius:999px;
  padding:8px 12px;
  cursor:pointer;
  display:flex; align-items:center; gap:8px;
}
.btn:hover{background:rgba(255,255,255,.09)}
.btn.primary{border-color: rgba(160,196,255,.35); background: rgba(160,196,255,.10)}
.btn.danger{border-color: rgba(255,120,120,.35); background: rgba(255,120,120,.10)}
.btn .k{opacity:.75; font-size:12px; font-family:var(--mono)}
.btn[disabled]{opacity:.45; cursor:not-allowed}

.vol{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
}
.vol:hover{background:rgba(255,255,255,.09)}
.vol input[type="range"]{width:120px}
@media (max-width:520px){
  .vol input[type="range"]{width:90px}
}

.coverMode{padding:8px 0 4px}
.coverHero{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.05);
}
.coverHero img{
  width:100%;
  /*max-height: 520px;*/
  object-fit:cover;
}
.coverActions{display:flex; gap:10px; margin:12px 0 6px}
.coverTip{color:var(--muted); font-size:13px}


.readerBody{padding:14px}
.illustration{
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.05);
  margin:0 0 14px;
}
.text{line-height:var(--line); font-size:16px; letter-spacing:.15px}
.text p {
	text-indent: 3em;
	margin:0 0 14px;
	color: rgba(255,255,255,.90);
	text-align:justify;
	font-size: var(--fontSize);
}
.text h2{margin:22px 0 10px; text-align:center; }
.text .muted{color:var(--muted)}

.footer{
  max-width:var(--maxw);
  margin:14px auto 0;
  color:rgba(255,255,255,.5);
  font-size:12px;
  text-align:center;
}

.miniBar{
  display:none;
  gap:10px;
  position:fixed;
  left:14px; right:14px; bottom:14px;
  padding:10px;
  border-radius:16px;
  z-index:50;
}
@media (max-width: 980px){
  .toc{position:fixed; inset:72px 14px 14px; z-index:60; display:none}
  .toc.open{display:block}
  .miniBar{display:flex}
}
.miniBar .btn{flex:1; justify-content:center}

.toast{
  position:fixed; top:18px; right:18px;
  padding:10px 12px;
  border-radius:14px;
  z-index:80;
  opacity:0;
  transform: translateY(-6px);
  transition: all .2s ease;
}
.toast.show{opacity:1; transform: translateY(0)}