/* MPL Flipbooks — palette drawn from the booklets: forest green, antique gold, warm paper */
:root{
  --bg:#f2eee3; --panel:#fbf8ef; --panel2:#f3eedf; --ink:#1b3a2a; --muted:#5f6d63; --line:#dcd4bc;
  --accent:#a47628; --accent-ink:#ffffff; --desk:#e6e0cd; --paper:#fbf7ec; --danger:#a63d2f;
  --shadow:0 10px 30px rgba(27,58,42,.16); --scrim:rgba(20,30,24,.45);
  --serif:'Lora',Georgia,'Times New Roman',serif; --sans:'Poppins',system-ui,-apple-system,'Segoe UI',sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0e1712; --panel:#15221b; --panel2:#1b2b22; --ink:#e9e5d4; --muted:#9bab9f; --line:#27382d;
    --accent:#d6b062; --accent-ink:#1a2210; --desk:#0a110d; --paper:#fbf7ec; --danger:#e08a7a;
    --shadow:0 10px 30px rgba(0,0,0,.5); --scrim:rgba(0,0,0,.6); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0e1712; --panel:#15221b; --panel2:#1b2b22; --ink:#e9e5d4; --muted:#9bab9f; --line:#27382d;
  --accent:#d6b062; --accent-ink:#1a2210; --desk:#0a110d; --paper:#fbf7ec; --danger:#e08a7a;
  --shadow:0 10px 30px rgba(0,0,0,.5); --scrim:rgba(0,0,0,.6); color-scheme:dark;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);font:400 14px/1.5 var(--sans);overflow:hidden;-webkit-text-size-adjust:100%}
img{max-width:100%}
[hidden]{display:none!important}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
svg.i{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- Library ---------- */
#lib{height:100%;overflow:auto;padding-inline:max(16px,4vw);padding-block:24px 56px}
.lib-head{max-width:1100px;margin-inline:auto;display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding-bottom:20px;border-bottom:1px solid var(--line)}
.lib-head img{height:64px;width:auto;border-radius:6px;background:#fff;padding:4px}
.lib-head .t{min-width:0;flex:1 1 220px}
.lib-head h1{font:600 clamp(22px,4vw,32px)/1.15 var(--serif);margin:0;text-wrap:balance}
.lib-head p{margin:2px 0 0;color:var(--muted)}
.lib-tools{max-width:1100px;margin:20px auto 0;display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.field{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:0 12px;height:42px;flex:1 1 260px;max-width:420px}
.field input{flex:1;min-width:0;border:0;background:transparent;outline:none;height:100%}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:6px 14px;font-size:13px;color:var(--muted)}
.chip[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink);border-color:transparent;font-weight:500}
.count{color:var(--muted);font-size:13px}
.grid{max-width:1100px;margin:20px auto 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:20px}
.card{color:inherit;text-decoration:none;display:flex;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px;text-align:left;min-width:0;transition:transform .18s,box-shadow .18s}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.card .cv{width:104px;flex:none;aspect-ratio:612/792;border-radius:4px;background:var(--paper) center/cover;box-shadow:0 3px 10px rgba(0,0,0,.22)}
.card .tx{min-width:0;display:flex;flex-direction:column;gap:6px}
.card h2{font:600 18px/1.25 var(--serif);margin:0;text-wrap:balance}
.card .sub{color:var(--muted);font-size:13px}
.card .meta{margin-top:auto;display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted)}
.pill{background:var(--accent);color:var(--accent-ink);border-radius:999px;padding:3px 12px;font-weight:500;font-size:12px}
.empty{max-width:1100px;margin:40px auto;color:var(--muted)}

/* ---------- Reader ---------- */
#reader{height:100%;display:flex;flex-direction:column;position:relative;background:var(--desk)}
.bar{display:flex;align-items:center;gap:6px;background:var(--panel);padding:8px max(10px,env(safe-area-inset-left,0px));flex:none;position:relative;z-index:6}
.top{border-bottom:1px solid var(--line);padding-top:calc(8px + env(safe-area-inset-top,0px))}
.bot{border-top:1px solid var(--line);padding-bottom:calc(8px + env(safe-area-inset-bottom,0px))}
.ib{width:40px;height:40px;border-radius:10px;border:0;background:transparent;display:inline-grid;place-items:center;position:relative;flex:none;text-decoration:none;color:inherit}
.ib:hover{background:var(--panel2)}
.ib[aria-pressed="true"],.ib.on{background:var(--panel2);color:var(--accent)}
.ib[disabled]{opacity:.35;cursor:default}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex:1 1 auto;text-decoration:none;color:inherit}
.brand img{height:32px;width:auto;border-radius:4px;background:#fff;padding:2px;flex:none}
.brand .nm{min-width:0}
.brand b{display:block;font:600 15px/1.2 var(--serif);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand small{display:block;color:var(--muted);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.secondary{display:flex;gap:2px;align-items:center}
.morebtn{display:none}
#stagewrap{flex:1 1 auto;min-height:0;position:relative;overflow:hidden}
#scroller{position:absolute;inset:0;overflow:auto}
#zoomer{position:relative;width:100%;height:100%}
#book{position:absolute;inset:0}
.pg{background:var(--paper);overflow:hidden;position:relative}
.pg .cv{position:absolute;inset:0;width:100%;height:100%;display:block}
.pg .ph{position:absolute;inset:0;display:grid;place-items:center;background:center/cover no-repeat var(--paper)}
.pg .ph i{width:26px;height:26px;border-radius:50%;border:3px solid rgba(226,219,195,.8);border-top-color:var(--accent);animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.pg .lk{position:absolute;display:block;z-index:3;border-radius:3px}
.pg .lk:hover{background:rgba(164,118,40,.18);outline:1px solid rgba(164,118,40,.6)}
.pg .hl{position:absolute;inset:0;pointer-events:none;z-index:2}
.pg .hl b{position:absolute;background:rgba(255,196,0,.42);mix-blend-mode:multiply;border-radius:2px}
.pg .mk{position:absolute;top:0;right:14px;width:16px;height:26px;background:var(--accent);clip-path:polygon(0 0,100% 0,100% 100%,50% 76%,0 100%);z-index:3;pointer-events:none}
.navbtn{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:44px;height:64px;border-radius:12px;border:0;background:rgba(251,248,239,.82);color:#1b3a2a;display:grid;place-items:center;box-shadow:0 2px 10px rgba(0,0,0,.2);backdrop-filter:blur(6px)}
.navbtn:hover{background:rgba(251,248,239,.97)}
.navbtn[disabled]{opacity:0;pointer-events:none}
#prevBig{left:8px}#nextBig{right:8px}
.imm .bar{display:none}
.imm #immExit{display:grid}
#immExit{display:none;position:absolute;top:10px;right:10px;z-index:8;background:rgba(251,248,239,.9);color:#1b3a2a;box-shadow:0 2px 10px rgba(0,0,0,.25)}
.sliderbox{flex:1 1 auto;min-width:60px;display:flex;align-items:center;padding-inline:8px}
input[type=range]{width:100%;height:28px;background:transparent;appearance:none;-webkit-appearance:none;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(90deg,var(--accent) var(--fill,0%),var(--line) var(--fill,0%))}
input[type=range]::-moz-range-track{height:4px;border-radius:2px;background:var(--line)}
input[type=range]::-moz-range-progress{height:4px;border-radius:2px;background:var(--accent)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);border:2px solid var(--panel);margin-top:-7px;box-shadow:0 1px 4px rgba(0,0,0,.3)}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--accent);border:2px solid var(--panel)}
.pgind{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;white-space:nowrap;color:var(--muted);font-size:13px}
.pgind input{width:52px;height:32px;text-align:center;border:1px solid var(--line);border-radius:8px;background:var(--bg);outline-offset:1px}
.zoomgrp{display:flex;align-items:center;border-left:1px solid var(--line);margin-left:6px;padding-left:6px}
.zlab{width:46px;text-align:center;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}

/* drawer */
#scrim{position:absolute;inset:0;background:var(--scrim);z-index:9;opacity:0;pointer-events:none;transition:opacity .2s}
#drawer{position:absolute;top:0;bottom:0;left:0;width:min(340px,88vw);background:var(--panel);border-right:1px solid var(--line);z-index:10;display:flex;flex-direction:column;transform:translateX(-102%);transition:transform .22s ease;box-shadow:var(--shadow)}
.drawer-open #drawer{transform:none}
.drawer-open #scrim{opacity:1;pointer-events:auto}
.tabs{display:flex;border-bottom:1px solid var(--line);flex:none;padding-top:env(safe-area-inset-top,0px)}
.tabs button{flex:1;border:0;background:transparent;padding:12px 4px;font-size:12px;font-weight:500;color:var(--muted);border-bottom:2px solid transparent;display:flex;flex-direction:column;align-items:center;gap:2px}
.tabs button[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent)}
.tabpanel{flex:1;min-height:0;overflow:auto;padding:12px}
#thumbs{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 10px}
.th{border:0;background:transparent;padding:0;text-align:center;color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
.th .box{display:block;aspect-ratio:612/792;background:var(--paper);border:1px solid var(--line);border-radius:3px;overflow:hidden;position:relative}
.th .box img{width:100%;height:100%;display:block;object-fit:cover}
.th[aria-current="true"] .box{outline:2px solid var(--accent);outline-offset:2px}
.th[aria-current="true"]{color:var(--accent);font-weight:600}
.toc{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.toc button{width:100%;text-align:left;border:0;background:transparent;padding:9px 8px;border-radius:8px;display:flex;gap:10px;justify-content:space-between;align-items:baseline}
.toc button:hover{background:var(--panel2)}
.toc .h button{font:600 14px var(--serif);color:var(--accent);padding-top:16px}
.toc .pn{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px;flex:none}
.sbox{display:flex;gap:8px;align-items:center;margin-bottom:10px}
.sres{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.sres button{width:100%;text-align:left;border:0;background:transparent;padding:8px;border-radius:8px}
.sres button:hover{background:var(--panel2)}
.sres .pp{font-size:11px;color:var(--accent);font-weight:600;display:block}
.sres span.sn{font-size:13px;display:block;overflow-wrap:anywhere}
.sres mark{background:rgba(255,196,0,.45);color:inherit;border-radius:2px;padding:0 1px}
.note{color:var(--muted);font-size:12px;margin:6px 2px}
.mkrow{display:flex;align-items:center;gap:4px}
.mkrow button.go{flex:1}

/* modal */
.modal{position:absolute;inset:0;z-index:20;display:grid;place-items:center;padding:16px;background:var(--scrim)}
.sheet{background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);width:min(480px,100%);max-height:100%;overflow:auto;padding:18px;display:flex;flex-direction:column;gap:14px}
.sheet h3{margin:0;font:600 18px var(--serif)}
.sheet label{font-size:12px;color:var(--muted);display:block;margin-bottom:4px}
.row{display:flex;gap:8px}
.row.ctr{align-items:center;justify-content:space-between}
.row input,.row textarea{flex:1;min-width:0;height:40px;border:1px solid var(--line);border-radius:10px;background:var(--bg);padding:0 10px;font-size:13px}
.row textarea{height:84px;padding:8px 10px;resize:none;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}
.btn{height:40px;padding:0 16px;border-radius:10px;border:1px solid var(--line);background:var(--panel2);display:inline-flex;align-items:center;gap:6px;font-weight:500;flex:none;text-decoration:none;color:inherit}
.btn.pri{background:var(--accent);color:var(--accent-ink);border-color:transparent}
#qrBox{display:grid;place-items:center;padding:12px;background:#fff;border-radius:12px;align-self:center}
#qrBox img,#qrBox canvas{display:block}
.kbd{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:13px}
kbd{font:500 12px var(--sans);background:var(--bg);border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:1px 7px}
#toast{position:absolute;left:50%;bottom:84px;transform:translate(-50%,20px);background:#1b3a2a;color:#f6f1e2;border-radius:10px;padding:9px 16px;font-size:13px;opacity:0;pointer-events:none;transition:.2s;z-index:30;max-width:90vw;text-align:center}
#toast.show{opacity:1;transform:translate(-50%,0)}
#loading{position:absolute;inset:0;z-index:12;background:var(--bg);display:grid;place-content:center;justify-items:center;gap:14px;padding:24px;text-align:center}
#loading img{height:84px;border-radius:8px;background:#fff;padding:6px}
#loading .t{font:600 18px var(--serif)}
.prog{width:min(280px,70vw);height:6px;border-radius:3px;background:var(--line);overflow:hidden}
.prog i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s}
#loading .s{color:var(--muted);font-size:13px;min-height:20px}

@media (max-width:760px){
  .zoomgrp{display:none}
  .navbtn{width:36px;height:52px}
  .morebtn{display:inline-grid}
  .secondary{display:none;position:absolute;top:100%;right:8px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;z-index:12}
  .secondary.open{display:flex}
  .secondary .ib{width:auto;padding:0 14px;justify-content:flex-start;gap:10px;display:flex;align-items:center;font-size:13px}
  .lab{display:inline}
  .card .cv{width:84px}
}
@media (min-width:761px){.lab{display:none}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation-duration:0s!important}}