:root{
  --bg:#12100d; --bg2:#1a1712; --panel:#1e1a14; --panel2:#262019;
  --line:#2e2820; --ink:#f2ead9; --ink-dim:#b3a68d; --ink-faint:#7d7261;
  --accent:#f0a13c; --accent2:#ffd9a0; --accent-ink:#241703;
  --danger:#e86a5e; --radius:16px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--font);min-height:100vh;
  -webkit-font-smoothing:antialiased;padding-bottom:96px}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select{font-family:inherit}
::selection{background:var(--accent);color:var(--accent-ink)}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:14px;
  padding:12px 20px;background:rgba(18,16,13,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);
  font-weight:800;font-size:1.25rem;letter-spacing:-.02em;white-space:nowrap}
.brand-ico{font-size:1.5rem;filter:drop-shadow(0 2px 6px rgba(240,161,60,.5))}
.brand em{font-style:normal;color:var(--accent)}
.search{flex:1;max-width:560px;display:flex;align-items:center;gap:8px;background:var(--panel);
  border:1px solid var(--line);border-radius:999px;padding:9px 16px;color:var(--ink-faint);
  transition:border-color .2s, box-shadow .2s}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(240,161,60,.18)}
.search input{flex:1;background:none;border:none;outline:none;color:var(--ink);font-size:.95rem;min-width:0}
.search input::placeholder{color:var(--ink-faint)}
.search button{color:var(--ink-faint);font-size:.85rem;padding:2px 6px;border-radius:8px}
.search button:hover{color:var(--ink)}
.topstats{margin-left:auto;font-size:.82rem;color:var(--ink-faint);white-space:nowrap}
.topstats b{color:var(--accent)}

/* ---------- hero ---------- */
.hero{position:relative;margin:22px 20px 8px;border-radius:22px;overflow:hidden;
  min-height:230px;display:flex;align-items:flex-end;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2;transform:scale(1.05)}
.hero-bg img{width:100%;height:100%;object-fit:cover;filter:blur(26px) brightness(.5) saturate(1.3)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(10,8,6,.92) 20%,rgba(10,8,6,.55) 55%,rgba(10,8,6,.15))}
.hero-inner{display:flex;gap:22px;padding:26px;align-items:center;width:100%}
.hero-cover{width:150px;aspect-ratio:3/4;object-fit:cover;border-radius:14px;box-shadow:var(--shadow);
  border:1px solid rgba(255,255,255,.12);flex-shrink:0}
.hero-kicker{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent2);font-weight:700}
.hero-title{font-size:clamp(1.4rem,3vw,2.1rem);font-weight:800;letter-spacing:-.02em;margin:6px 0}
.hero-meta{color:var(--ink-dim);font-size:.92rem;margin-bottom:14px}
.hero-meta b{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--accent-ink);
  font-weight:700;font-size:.95rem;padding:11px 22px;border-radius:999px;transition:transform .15s,box-shadow .2s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(240,161,60,.35)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--accent);box-shadow:none}
.btn.sm{padding:8px 16px;font-size:.85rem}

/* ---------- shelves / toolbar ---------- */
.shelf{margin:26px 0 0}
.shelf-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px;margin-bottom:12px}
.shelf-head h2{font-size:1.05rem;font-weight:750;letter-spacing:-.01em}
.linkbtn{color:var(--ink-faint);font-size:.82rem}
.linkbtn:hover{color:var(--danger)}
.hscroll{display:flex;gap:14px;overflow-x:auto;padding:4px 20px 14px;scrollbar-width:thin}
.hscroll .card{flex:0 0 148px}

.toolbar{position:sticky;top:61px;z-index:40;background:rgba(18,16,13,.88);backdrop-filter:blur(12px);
  padding:12px 20px;border-bottom:1px solid var(--line)}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex-shrink:0;padding:8px 15px;border-radius:999px;background:var(--panel);border:1px solid var(--line);
  color:var(--ink-dim);font-size:.85rem;font-weight:600;transition:all .18s;white-space:nowrap}
.chip:hover{border-color:var(--accent);color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.chip small{opacity:.7;font-weight:500}
.tools{display:flex;align-items:center;justify-content:space-between;gap:10px}
.count{font-size:.82rem;color:var(--ink-faint)}
select{background:var(--panel);color:var(--ink);border:1px solid var(--line);border-radius:10px;
  padding:8px 12px;font-size:.85rem;outline:none}
select:focus{border-color:var(--accent)}

/* ---------- book grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:18px 14px;padding:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  cursor:pointer;transition:transform .18s,box-shadow .25s,border-color .2s;position:relative;text-align:left;width:100%}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#4a3f2e}
.card .cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--bg2)}
.card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.card:hover .cover img{transform:scale(1.05)}
.card .kbadge{position:absolute;top:8px;right:8px;background:rgba(10,8,6,.78);backdrop-filter:blur(6px);
  font-size:.72rem;font-weight:700;color:var(--accent2);padding:4px 9px;border-radius:999px;border:1px solid rgba(240,161,60,.3)}
.card .cbody{padding:11px 12px 13px}
.card .ctitle{font-size:.88rem;font-weight:700;line-height:1.32;display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;min-height:2.3em}
.card .cauthor{font-size:.78rem;color:var(--ink-dim);margin-top:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card .cnarr{font-size:.74rem;color:var(--ink-faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card .ccat{display:inline-block;margin-top:8px;font-size:.68rem;font-weight:700;letter-spacing:.04em;
  color:var(--accent);background:rgba(240,161,60,.12);padding:3px 9px;border-radius:999px}
.more-wrap{display:flex;justify-content:center;padding:8px 0 30px}
.empty{text-align:center;padding:70px 20px;color:var(--ink-dim)}
.empty-ico{font-size:3rem;margin-bottom:12px;opacity:.6}

/* skeleton */
.sk{background:linear-gradient(100deg,var(--panel) 40%,var(--panel2) 50%,var(--panel) 60%);
  background-size:200% 100%;animation:sh 1.2s infinite;border-radius:var(--radius)}
@keyframes sh{to{background-position:-200% 0}}

/* ---------- detail ---------- */
.backbtn{display:inline-flex;align-items:center;gap:8px;margin:18px 20px 0;color:var(--ink-dim);
  font-size:.9rem;font-weight:600;padding:8px 14px;border-radius:10px;border:1px solid var(--line);background:var(--panel)}
.backbtn:hover{color:var(--ink);border-color:var(--accent)}
.detail{max-width:980px;margin:0 auto;padding:22px 20px 40px}
.detail-head{display:flex;gap:26px;flex-wrap:wrap}
.detail-cover{width:230px;aspect-ratio:3/4;object-fit:cover;border-radius:18px;box-shadow:var(--shadow);
  border:1px solid rgba(255,255,255,.1);flex-shrink:0}
.detail-info{flex:1;min-width:260px}
.d-cat{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.d-title{font-size:clamp(1.5rem,3.4vw,2.3rem);font-weight:800;letter-spacing:-.02em;margin:8px 0 4px;line-height:1.15}
.d-meta{color:var(--ink-dim);font-size:.93rem;line-height:1.9}
.d-meta b{color:var(--ink);font-weight:600}
.d-actions{display:flex;gap:10px;margin:18px 0;flex-wrap:wrap}
.d-desc{margin-top:6px;color:var(--ink-dim);font-size:.93rem;line-height:1.75;white-space:pre-wrap;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.d-desc:empty{display:none}
.tracks{list-style:none;margin-top:22px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tracks li{display:flex;align-items:center;gap:12px;padding:11px 16px;border-bottom:1px solid var(--line);
  cursor:pointer;transition:background .15s;font-size:.9rem}
.tracks li:last-child{border-bottom:none}
.tracks li:hover{background:rgba(240,161,60,.07)}
.tracks li.playing{background:rgba(240,161,60,.13)}
.tracks li.playing .t-num{color:var(--accent)}
.t-num{width:34px;flex-shrink:0;color:var(--ink-faint);font-variant-numeric:tabular-nums;font-size:.82rem;font-weight:600}
.t-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.t-dur{color:var(--ink-faint);font-size:.78rem;font-variant-numeric:tabular-nums}
.t-play{width:34px;height:34px;border-radius:50%;background:rgba(240,161,60,.14);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:.8rem;flex-shrink:0}
.tracks li:hover .t-play{background:var(--accent);color:var(--accent-ink)}

/* ---------- player ---------- */
.player{position:fixed;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:60;
  background:rgba(30,26,20,.92);backdrop-filter:blur(18px);border:1px solid #3d342a;border-radius:18px;
  display:flex;align-items:center;gap:12px;padding:10px 14px 12px;box-shadow:var(--shadow)}
.p-progress{position:absolute;top:-1px;left:14px;right:14px;height:4px;background:rgba(255,255,255,.1);
  border-radius:99px;cursor:pointer}
.p-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:99px;position:relative}
.p-knob{position:absolute;right:-6px;top:50%;transform:translateY(-50%);width:12px;height:12px;border-radius:50%;
  background:var(--accent2);box-shadow:0 0 8px rgba(240,161,60,.8)}
.p-cover{width:52px;height:52px;border-radius:12px;overflow:hidden;flex-shrink:0;border:1px solid var(--line)}
.p-cover img{width:100%;height:100%;object-fit:cover}
.p-meta{flex:1;min-width:0;cursor:pointer;text-align:left}
.p-title{font-size:.88rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.p-sub{font-size:.76rem;color:var(--ink-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.p-times{font-size:.76rem;color:var(--ink-faint);font-variant-numeric:tabular-nums;white-space:nowrap}
.p-sep{margin:0 4px;opacity:.5}
.p-controls{display:flex;align-items:center;gap:4px}
.iconbtn{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:1rem;color:var(--ink-dim);transition:all .15s}
.iconbtn:hover{background:rgba(255,255,255,.08);color:var(--ink)}
.iconbtn.big{font-size:1.25rem}
.iconbtn.txt{width:auto;padding:0 12px;border-radius:999px;font-size:.8rem;font-weight:700;border:1px solid var(--line)}
.iconbtn.txt.on{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.playbtn{width:48px;height:48px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-size:1.15rem;
  display:flex;align-items:center;justify-content:center;transition:transform .15s,box-shadow .2s;flex-shrink:0}
.playbtn:hover{transform:scale(1.06);box-shadow:0 6px 18px rgba(240,161,60,.4)}
.playbtn.xl{width:64px;height:64px;font-size:1.5rem}
.p-extra{display:flex;align-items:center;gap:2px}

/* ---------- sheet ---------- */
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;backdrop-filter:blur(2px)}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:71;max-height:88vh;overflow-y:auto;
  background:var(--bg2);border-top:1px solid var(--line);border-radius:24px 24px 0 0;padding:10px 22px 34px;
  animation:up .28s ease}
@keyframes up{from{transform:translateY(40px);opacity:0}}
.sheet-grab{width:44px;height:5px;border-radius:99px;background:var(--line);margin:6px auto 18px;cursor:pointer}
.sheet-head{display:flex;gap:18px;align-items:center;margin-bottom:18px}
.s-art{width:110px;aspect-ratio:1;border-radius:16px;object-fit:cover;box-shadow:var(--shadow);flex-shrink:0}
.s-book{font-weight:800;font-size:1.05rem}
.s-track{color:var(--accent2);font-size:.88rem;margin-top:4px}
.s-narr{color:var(--ink-faint);font-size:.8rem;margin-top:2px}
.s-progress{display:flex;align-items:center;gap:10px;font-size:.78rem;color:var(--ink-faint);font-variant-numeric:tabular-nums}
.s-progress input[type=range]{flex:1;accent-color:var(--accent);cursor:pointer}
.s-controls{display:flex;align-items:center;justify-content:center;gap:14px;margin:16px 0}
.s-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin-bottom:18px;font-size:.88rem}
.s-row select{margin-left:8px}
.vol{display:flex;align-items:center;gap:8px}
.vol input{accent-color:var(--accent);width:110px}
.sheet h3{font-size:.95rem;margin-bottom:10px}
.sheet-tracks{max-height:300px;overflow-y:auto}

/* ---------- toast ---------- */
.toast{position:fixed;bottom:110px;left:50%;transform:translateX(-50%) translateY(20px);z-index:90;
  background:#2a241c;border:1px solid var(--accent);color:var(--ink);padding:11px 20px;border-radius:12px;
  font-size:.88rem;opacity:0;pointer-events:none;transition:all .25s;box-shadow:var(--shadow);max-width:90vw;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* image fallback when cover fails to load */
.img-fallback{display:flex;align-items:center;justify-content:center;flex-shrink:0;
  background:linear-gradient(135deg,#43331d,#241b10 70%);color:var(--accent);
  font-size:2.4rem;font-weight:800;letter-spacing:-.02em}
.img-fallback.fill{width:100%;height:100%}

/* ---------- responsive ---------- */
@media (max-width:720px){
  .topbar{flex-wrap:wrap;padding:10px 14px}
  .search{order:3;flex-basis:100%;max-width:none}
  .topstats{display:none}
  .hero{margin:14px 12px 4px;min-height:0}
  .hero-inner{padding:18px;gap:16px}
  .hero-cover{width:104px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(108px,1fr));gap:14px 10px;padding:14px 12px}
  .toolbar{top:0;padding:10px 12px}
  .shelf-head{padding:0 12px}
  .hscroll{padding:4px 12px 12px}
  .detail{padding:16px 12px 30px}
  .detail-cover{width:150px}
  .player{left:8px;right:8px;padding:8px 10px 10px;gap:8px}
  .p-times{display:none}
  .p-extra .iconbtn.txt span{display:none}
  #pShuffle{display:none}
  .backbtn{margin:12px 12px 0}
}