:root{--bg:#f7f5f0;--fg:#1f1d1a;--muted:#6f6a62;--card:#fffdf9;--line:#e6e1d7;--acc:#c2410c;--acc2:#fff1e8;--paper:#fffdf9;--ink:#1f1d1a;--shadow:0 1px 2px rgba(40,30,10,.06),0 8px 24px rgba(40,30,10,.07);--r:14px;--serif:"Iowan Old Style","Palatino Linotype",Palatino,Charter,"Bitstream Charter",Georgia,serif;--sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
[data-theme=sepia]{--bg:#efe5cf;--fg:#3b2f20;--muted:#7d6b52;--card:#f6ecd6;--line:#ddcfb1;--acc:#a14d12;--acc2:#f1dcc0;--paper:#f6ecd6;--ink:#3b2f20}
[data-theme=dark]{--bg:#111317;--fg:#e6e4df;--muted:#9a978f;--card:#1a1d23;--line:#2b2f37;--acc:#fb923c;--acc2:#2e2219;--paper:#16181d;--ink:#d9d6cf;--shadow:0 1px 2px rgba(0,0,0,.5),0 8px 24px rgba(0,0,0,.35)}
*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--fg);font:16px/1.5 var(--sans);-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}
.hidden{display:none!important}.muted{color:var(--muted)}.small{font-size:13px}.err{color:#e11d48;min-height:1.2em;margin:0}.pad{padding:0 14px}
button{font:inherit;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 12px;cursor:pointer;min-height:40px;touch-action:manipulation}
button:focus-visible,input:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
button.primary{background:var(--acc);border-color:var(--acc);color:#fff;font-weight:600}
button.ghost{background:transparent}
button.icon{border:0;background:transparent;padding:0;font-size:19px;position:relative;min-width:44px;min-height:44px;border-radius:12px}
button.icon:hover{background:var(--acc2)}
.pill{border-radius:999px;padding:6px 14px;min-height:38px;font-size:14px}
input,textarea{font:inherit;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;width:100%;min-height:44px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
/* login */
.login{max-width:360px;margin:16vh auto 0;padding:32px 28px;display:grid;gap:12px;text-align:center}.login h1{margin:0;font-family:var(--serif);font-size:32px}.logo{font-size:44px}
/* bars */
.bar{display:flex;align-items:center;gap:2px;padding:6px 10px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);z-index:10}
#library>.bar{position:sticky;top:0;padding-top:max(6px,env(safe-area-inset-top));border-bottom:1px solid var(--line)}
.brand{font-family:var(--serif);font-size:24px;margin:0 10px 0 4px;letter-spacing:-.01em}
.spacer{flex:1}
.tabs{display:flex;gap:4px;background:var(--acc2);padding:3px;border-radius:12px}
.tab{border:0;background:transparent;min-height:34px;padding:4px 12px;border-radius:9px;font-size:14px;color:var(--muted)}
.tab.on{background:var(--card);color:var(--fg);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:600}
/* library */
.wrap{max-width:1040px;margin:0 auto;padding:18px 16px calc(40px + env(safe-area-inset-bottom))}
.upload{display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;border:1.5px dashed var(--line);border-radius:var(--r);background:var(--card);transition:border-color .15s,background .15s}
.upload:hover{border-color:var(--acc)}.upload .big{font-size:28px;color:var(--acc);width:44px;text-align:center}
.upstatus{margin:10px 2px;display:grid;gap:6px}.upstatus .u{font-size:14px;display:grid;gap:4px}.upstatus .bar2{height:4px;border-radius:4px;background:var(--line);overflow:hidden}.upstatus .bar2 i{display:block;height:100%;background:var(--acc);width:0;transition:width .2s}
.sectionhead{display:flex;align-items:center;gap:12px;margin:22px 0 10px}.sectionhead h2{margin:0;font-family:var(--serif);font-size:22px;flex:1}.sectionhead input{max-width:240px;min-height:38px;padding:6px 12px}
.books{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:22px 18px}
@media (max-width:520px){.books{grid-template-columns:repeat(2,1fr);gap:18px 14px}}
.book{cursor:pointer;display:flex;flex-direction:column;gap:8px;position:relative}
.cover{aspect-ratio:2/3;border-radius:6px 10px 10px 6px;overflow:hidden;background:linear-gradient(135deg,var(--c1,#c2410c),var(--c2,#7c2d12));box-shadow:var(--shadow),inset 4px 0 0 rgba(0,0,0,.12);position:relative;transition:transform .15s,box-shadow .15s}
.book:hover .cover{transform:translateY(-3px)}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.cover .ph{position:absolute;inset:0;padding:14px 12px;color:#fff;font-family:var(--serif);font-size:17px;line-height:1.25;display:flex;flex-direction:column;justify-content:space-between;text-shadow:0 1px 2px rgba(0,0,0,.25)}
.cover .ph small{font-family:var(--sans);font-size:11px;opacity:.85;text-transform:uppercase;letter-spacing:.08em}
.cover .pbar{position:absolute;left:0;right:0;bottom:0;height:4px;background:rgba(0,0,0,.25)}.cover .pbar i{display:block;height:100%;background:var(--acc)}
.book .t{font-weight:600;font-size:14px;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.book .meta{font-size:12px;color:var(--muted);display:flex;gap:6px;align-items:center}
.tag{font-size:10px;text-transform:uppercase;letter-spacing:.06em;border:1px solid var(--line);border-radius:5px;padding:0 5px}
.book .more{position:absolute;top:6px;right:6px;min-width:34px;min-height:34px;border-radius:50%;padding:0;background:rgba(0,0,0,.45);color:#fff;border:0;opacity:0;transition:opacity .15s}
.book:hover .more,.book:focus-within .more{opacity:1}@media (hover:none){.book .more{opacity:.85}}
.menu{position:fixed;z-index:60;min-width:170px;padding:6px;display:grid}.menu button{border:0;background:transparent;text-align:left;border-radius:8px}.menu button:hover{background:var(--acc2)}
.continue{display:flex;gap:18px;padding:16px;margin-bottom:18px;cursor:pointer;align-items:center}
.continue .cover{width:92px;flex:none}.continue h3{margin:2px 0 4px;font-family:var(--serif);font-size:21px;line-height:1.25}
.continue .eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--acc);font-weight:700}
.continue .prog{height:6px;border-radius:6px;background:var(--line);overflow:hidden;margin:10px 0 6px}.continue .prog i{display:block;height:100%;background:var(--acc)}
.empty{padding:40px 10px;text-align:center;color:var(--muted)}
.dropoverlay{position:fixed;inset:0;z-index:70;background:color-mix(in srgb,var(--acc) 18%,transparent);display:flex;align-items:center;justify-content:center;border:3px dashed var(--acc);font-size:22px;font-family:var(--serif);color:var(--fg)}
.dropoverlay div{background:var(--card);padding:18px 28px;border-radius:var(--r);box-shadow:var(--shadow)}
/* all highlights */
.filters{display:grid;gap:10px;margin-bottom:16px}.colorfilter{display:flex;gap:8px;align-items:center}
.chip{min-height:36px;border-radius:999px;padding:4px 14px;font-size:14px}.chip.sw{width:36px;padding:0}.chip.on{outline:2px solid var(--acc);outline-offset:1px}
.hlgroup h3{font-family:var(--serif);font-size:18px;margin:22px 0 8px;display:flex;align-items:center;gap:8px}.hlgroup h3 .spacer{flex:1}
mark.q{background:color-mix(in srgb,var(--acc) 30%,transparent);color:inherit;border-radius:3px}
/* reader */
#reader{position:fixed;inset:0;display:flex;flex-direction:column;background:var(--paper)}
.rbar{position:absolute;top:0;left:0;right:0;padding-top:max(6px,env(safe-area-inset-top));border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--paper) 90%,transparent);transition:transform .25s ease,opacity .25s}
.rfoot{position:absolute;bottom:0;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;padding:8px 16px max(8px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:color-mix(in srgb,var(--paper) 90%,transparent);transition:transform .25s ease,opacity .25s;font-size:13px}
.footrow{display:flex;gap:8px;align-items:center;font-variant-numeric:tabular-nums}
.progress{height:4px;border-radius:4px;background:var(--line);overflow:hidden;cursor:pointer}.progress i{display:block;height:100%;width:0;background:var(--acc);transition:width .3s}
#reader.chromeless .rbar{transform:translateY(-110%);opacity:0;pointer-events:none}
#reader.chromeless .rfoot{transform:translateY(110%);opacity:0;pointer-events:none}
#reader.chromeless .nav{opacity:0}
.title{min-width:0;margin-left:2px;line-height:1.2}#rTitle{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:15px}
#rChapter{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.title{max-width:calc(100vw - 290px)}@media (max-width:560px){.title{max-width:calc(100vw - 270px)}#focusBtn{display:none}}
#stage{position:absolute;inset:0;overflow:hidden}
#pdfView{position:absolute;inset:0;overflow:auto;padding:68px 0 80px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.page{position:relative;margin:0 auto 14px;background:#fff;box-shadow:var(--shadow);border-radius:2px}
.page canvas{display:block;width:100%;height:100%}
[data-theme=dark] .page{background:#16181d}[data-theme=dark] .page canvas{filter:invert(.88) hue-rotate(180deg) saturate(.85)}
[data-theme=sepia] .page canvas{filter:sepia(.35) brightness(.97)}
.page .pno{position:absolute;bottom:-18px;right:0;font-size:11px;color:var(--muted)}
.textLayer{position:absolute;inset:0;overflow:hidden;line-height:1;z-index:2;text-size-adjust:none;-webkit-text-size-adjust:none;forced-color-adjust:none;-webkit-user-select:text;user-select:text;-webkit-touch-callout:default}
.textLayer span,.textLayer br{color:transparent;position:absolute;white-space:pre;cursor:text;transform-origin:0 0}
.textLayer ::selection{background:rgba(255,160,0,.38)}
.textLayer .endOfContent{display:block;position:absolute;inset:100% 0 0;z-index:-1;cursor:default;user-select:none}
.textLayer.selecting .endOfContent{top:0}
.textLayer .sq{background:rgba(255,120,0,.45);border-radius:2px}
.hlLayer{position:absolute;inset:0;z-index:1;pointer-events:none}
.hlLayer i{position:absolute;mix-blend-mode:multiply;opacity:.5;border-radius:2px}
[data-theme=dark] .hlLayer i{mix-blend-mode:normal;opacity:.32}
.hlLayer i.flash{animation:flash 1.2s 2}@keyframes flash{50%{opacity:.95}}
#epubView{position:absolute;inset:60px 0 52px;transition:inset .25s}
#reader.chromeless #epubView{inset:max(14px,env(safe-area-inset-top)) 0 max(14px,env(safe-area-inset-bottom))}
.nav{position:absolute;top:50%;transform:translateY(-50%);z-index:3;font-size:30px;width:44px;height:72px;border-radius:12px;opacity:.35;padding:0;border:0;background:transparent;color:var(--muted);transition:opacity .2s}
.nav:hover{opacity:1;background:var(--acc2)}#prev{left:4px}#next{right:4px}
@media (hover:none){.nav{display:none!important}}
.selbar{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(64px + env(safe-area-inset-bottom));z-index:55;display:flex;gap:6px;align-items:center;padding:7px 8px;background:var(--card);border:1px solid var(--line);border-radius:999px;box-shadow:0 10px 30px rgba(0,0,0,.25);max-width:calc(100vw - 16px);animation:pop .15s ease}
@keyframes pop{from{transform:translateX(-50%) scale(.92);opacity:0}}
.sw{width:40px;height:40px;min-height:40px;border-radius:50%;padding:0;background:var(--c);border:2px solid rgba(0,0,0,.12);flex:none}
.sw:active{transform:scale(.9)}
@media (max-width:420px){.selbar .sw{width:36px;height:36px;min-height:36px}.selbar .pill{padding:6px 10px}}
/* panel */
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:45}
.panel{position:fixed;top:0;right:0;bottom:0;width:min(440px,100vw);background:var(--card);border-left:1px solid var(--line);z-index:50;transform:translateX(102%);transition:transform .22s ease;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.panel.open{transform:none}.panel>.bar{padding-top:max(6px,env(safe-area-inset-top));border-bottom:1px solid var(--line);background:var(--card)}
.ptab{flex:1;overflow:auto;display:none;padding-bottom:env(safe-area-inset-bottom)}.ptab.on{display:block}
.toclist,.reslist,.hllist{list-style:none;margin:0;padding:8px}
.toclist li button{width:100%;text-align:left;border:0;background:transparent;border-radius:8px;padding:10px 12px;font-size:15px;min-height:44px}
.toclist li button:hover{background:var(--acc2)}.toclist li button.cur{color:var(--acc);font-weight:600}
.searchrow{display:flex;gap:8px;padding:12px 12px 4px}.searchrow button{flex:none}
.reslist li{padding:10px 12px;border-radius:10px;cursor:pointer;font-size:14px}.reslist li:hover{background:var(--acc2)}.reslist .where{font-size:12px;color:var(--muted)}
.exportrow{display:flex;gap:6px;align-items:center;padding:12px 12px 4px;flex-wrap:wrap}.hlfilter{margin:8px 12px 0;width:calc(100% - 24px)}
.hllist{display:grid;gap:10px;padding:12px}
.hl{border-left:4px solid var(--c);padding:10px 12px;background:var(--bg);border-radius:10px}
.hl blockquote{margin:0 0 6px;font-family:var(--serif);font-size:16px;line-height:1.45;cursor:pointer}.hl .note{font-size:14px;white-space:pre-wrap;margin-bottom:6px;padding:6px 8px;background:var(--card);border-radius:8px}
.hl .meta{font-size:12px;color:var(--muted);display:flex;gap:4px;align-items:center;flex-wrap:wrap}.hl .meta button{min-height:32px;padding:2px 10px;font-size:12px;border-radius:999px}
.badge{position:absolute;top:4px;right:2px;font-size:10px;line-height:15px;background:var(--acc);color:#fff;border-radius:8px;padding:0 5px;font-weight:700}.badge:empty{display:none}
/* sheet */
.sheet{position:fixed;left:50%;bottom:0;width:min(520px,100vw);transform:translate(-50%,105%);transition:transform .22s ease;z-index:50;background:var(--card);border:1px solid var(--line);border-bottom:0;border-radius:20px 20px 0 0;padding:6px 18px calc(18px + env(safe-area-inset-bottom));box-shadow:0 -10px 30px rgba(0,0,0,.18);display:grid;gap:12px}
.sheet.open{transform:translate(-50%,0)}.grab{width:40px;height:5px;border-radius:5px;background:var(--line);margin:4px auto 2px}
.setrow{display:flex;align-items:center;gap:12px}.setrow>span{flex:1;font-size:15px}.setrow b{min-width:44px;text-align:right;font-variant-numeric:tabular-nums;font-size:14px}
.setrow input[type=range]{flex:1.4;accent-color:var(--acc);min-height:32px;padding:0;border:0;background:transparent}
#reader.pdf .epubonly{display:none}#reader:not(.pdf) .pdfonly{display:none}
.noinvert .page canvas{filter:none!important}[data-theme=dark].noinvert .page{background:#fff}
.seg{display:flex;background:var(--acc2);padding:3px;border-radius:12px;gap:2px}.seg button{border:0;background:transparent;min-height:36px;padding:4px 12px;border-radius:9px;font-size:14px}.seg button.on{background:var(--card);box-shadow:0 1px 3px rgba(0,0,0,.15);font-weight:600}
.stepper{display:flex;align-items:center;gap:8px}.stepper button{min-width:48px}
.switch{position:relative;width:50px;height:30px;flex:none}.switch input{opacity:0;position:absolute}.switch i{position:absolute;inset:0;background:var(--line);border-radius:30px;transition:.2s}.switch i:after{content:"";position:absolute;left:3px;top:3px;width:24px;height:24px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.switch input:checked+i{background:var(--acc)}.switch input:checked+i:after{transform:translateX(20px)}
.toast{position:fixed;left:50%;bottom:calc(80px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:12px;z-index:80;font-size:14px;box-shadow:var(--shadow)}
.loading{position:fixed;inset:0;background:rgba(0,0,0,.35);display:flex;align-items:center;justify-content:center;gap:12px;color:#fff;z-index:90}
.spin{width:28px;height:28px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:s 1s linear infinite}@keyframes s{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

button.icon svg{display:block;margin:auto}
.upload:active{background:var(--acc2)}

/* ---- phone reader (v3) ---- */
#reader{height:100vh;height:100dvh}
.phonebar{display:none}
.fab{display:none;position:fixed;z-index:35;right:max(12px,env(safe-area-inset-right));bottom:max(14px,env(safe-area-inset-bottom));width:48px;height:48px;min-height:48px;border-radius:50%;padding:0;font-size:22px;line-height:1;background:color-mix(in srgb,var(--card) 92%,transparent);border:1px solid var(--line);box-shadow:var(--shadow);opacity:.9}
#reader.chromeless .fab{display:block}
@media (max-width:700px),(hover:none){
  .rbar #openToc,.rbar #openHl,.rbar #openSettings,.rbar #focusBtn{display:none}
  .rbar{padding-left:max(6px,env(safe-area-inset-left));padding-right:max(6px,env(safe-area-inset-right))}
  .title{max-width:none;flex:1}
  .rfoot{padding:6px max(10px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(10px,env(safe-area-inset-left))}
  .phonebar{display:flex;justify-content:space-around;gap:4px}
  .pbtn{flex:1;border:0;background:transparent;display:flex;flex-direction:column;align-items:center;gap:1px;font-size:19px;min-height:50px;padding:4px 2px;position:relative;border-radius:12px}
  .pbtn small{font-size:11px;color:var(--muted)}
  .pbtn:active{background:var(--acc2)}
  .pbtn .badge{top:2px;right:calc(50% - 22px)}
  #pdfView{padding:calc(60px + env(safe-area-inset-top)) 0 calc(120px + env(safe-area-inset-bottom))}
  #epubView{inset:calc(56px + env(safe-area-inset-top)) 0 calc(104px + env(safe-area-inset-bottom))}
  .selbar{bottom:calc(118px + env(safe-area-inset-bottom))}
  #reader.chromeless .selbar{bottom:calc(76px + env(safe-area-inset-bottom))}
  .toast{bottom:calc(130px + env(safe-area-inset-bottom))}
}

/* v4 page turning */
#stage,#epubView,#pdfView,.selbar,.pbtn,.fab{touch-action:manipulation}
#pdfView{touch-action:pan-y pinch-zoom;scroll-behavior:auto;will-change:scroll-position}
.page{contain:layout paint}
#epubView .epub-container{-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
#epubView.slide-l .epub-container{animation:slideL .14s ease-out}#epubView.slide-r .epub-container{animation:slideR .14s ease-out}
@keyframes slideL{from{opacity:.55}}@keyframes slideR{from{opacity:.55}} /* opacity only: transforms would skew epub.js location math */

html:has(#reader:not(.hidden)),body:has(#reader:not(.hidden)){overscroll-behavior:none}
/* v5 highlights */
.floatbar{position:fixed;transform:none;left:0;top:0;bottom:auto;z-index:56;animation:pop2 .12s ease}
@keyframes pop2{from{opacity:0;transform:scale(.94)}}
.floatbar .sep{width:1px;height:26px;background:var(--line);margin:0 2px}
.sw.def{box-shadow:0 0 0 3px var(--card),0 0 0 5px var(--acc)}
.pill.danger{color:#e11d48}
@media (max-width:420px){.floatbar{gap:4px;padding:6px}.floatbar .sw{width:34px;height:34px;min-height:34px}.floatbar .pill{padding:5px 9px;font-size:13px;min-height:36px}}
.notesheet{max-height:80dvh;overflow:auto;gap:10px;z-index:58}
.ns-head{display:flex;align-items:center;gap:8px}.ns-head b{font-size:17px;cursor:pointer}
.nsquote{margin:0;padding:8px 12px;border-left:4px solid var(--acc);background:var(--bg);border-radius:8px;font-family:var(--serif);font-size:16px;max-height:24vh;overflow:auto;-webkit-user-select:text;user-select:text}
.nsl{display:grid;gap:4px;font-size:14px;font-weight:600}.nsl small{font-weight:400}
.notesheet textarea,.notesheet input{font-size:16px;font-weight:400}
.notesheet textarea{resize:vertical;min-height:84px}
.notesheet .row{display:flex;gap:6px}.clozeprev{font-weight:400}
#nsCard{display:grid;gap:10px}#nsCard.collapsed{display:none}
.undo{display:flex;align-items:center;gap:12px;z-index:85}.undo .pill{background:transparent;color:inherit;border-color:currentColor;min-height:32px}
.hlchips{display:flex;gap:6px;flex-wrap:wrap;padding:8px 12px 0}.hlchips .chip{min-height:32px}.tagchip{font-size:13px}
.hllist .grp{font-family:var(--serif);font-weight:700;font-size:15px;color:var(--muted);padding:8px 2px 0;border-bottom:1px solid var(--line)}
.hl.swipe{position:relative;overflow:hidden;padding:0;background:#e11d48}.hl.swipe .swbg{position:absolute;inset:0;display:flex;align-items:center;justify-content:flex-end;padding-right:18px;color:#fff;font-weight:700}
.hl.swipe .swfg{position:relative;background:var(--bg);padding:10px 12px;border-left:4px solid var(--c);border-radius:10px;touch-action:pan-y}
.hl .ctx{font-size:12px;color:var(--muted);font-family:var(--serif);margin-bottom:2px}
.hl .front{font-size:13px;margin:0 0 6px;padding:4px 8px;border-radius:6px;background:var(--acc2)}
.hl .tag{font-size:11px;border:1px solid var(--line);border-radius:6px;padding:0 5px;text-transform:none;letter-spacing:0}
.seg button.dot{width:34px;padding:0;position:relative}.seg button.dot:after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--c)}
.pbtn.mark:disabled{opacity:.4}.pbtn.mark.on{color:var(--acc);font-weight:700}