:root{
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Charter,"Source Serif Pro",Georgia,serif;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --paper:#f6f0e4; --paper-2:#efe6d3; --card:#fbf7ee; --ink:#2b2622; --ink-2:#6b5f52; --rule:#dccfb6;
  --accent:#a8472a; --accent-ink:#fff8ef; --focus:#1f5f8b; --shadow:0 10px 30px -12px rgba(60,40,15,.35),0 2px 6px rgba(60,40,15,.08);
  --bar-h:52px; --r:10px;
  color-scheme:light;
}
[data-theme=sepia]{--paper:#efe0bf;--paper-2:#e6d4ab;--card:#f4e8cc;--ink:#43351f;--ink-2:#7a6847;--rule:#d3bf92;--accent:#9a3f1f;--accent-ink:#fff5e2;--focus:#1f5f8b}
[data-theme=dark]{--paper:#1a1715;--paper-2:#232019;--card:#242019;--ink:#e2d9ca;--ink-2:#a2968a;--rule:#3a342b;--accent:#e08a5f;--accent-ink:#1a1715;--focus:#7fc1ee;--shadow:0 12px 34px -10px rgba(0,0,0,.7);color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--paper);color:var(--ink);font:16px/1.5 var(--sans);-webkit-text-size-adjust:100%;overflow:hidden;transition:background .25s,color .25s}
[hidden]{display:none!important}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ic{width:22px;height:22px;display:block}
#app{height:100dvh;display:grid;grid-template-rows:auto 1fr auto;position:relative}

/* bars */
.bar{display:flex;align-items:center;gap:8px;padding:6px max(10px,env(safe-area-inset-left));min-height:var(--bar-h);background:var(--paper);position:relative;z-index:5}
.bar.top{border-bottom:1px solid var(--rule);padding-top:max(6px,env(safe-area-inset-top))}
.bar.bottom{border-top:1px solid var(--rule);padding-bottom:max(8px,env(safe-area-inset-bottom));padding-top:8px}
.titles{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;text-align:center;line-height:1.2}
.book-title{font:600 15px/1.2 var(--serif);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.book-author{font-size:12px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.actions{display:flex;gap:2px}
.icon-btn{position:relative;width:44px;height:44px;display:grid;place-items:center;border:0;background:transparent;border-radius:12px;color:var(--ink)}
.icon-btn:hover{background:var(--paper-2)}
.icon-btn[aria-expanded=true]{background:var(--paper-2)}
.badge{position:absolute;top:5px;right:3px;min-width:17px;height:17px;border-radius:9px;background:var(--accent);color:var(--accent-ink);font:700 10px/17px var(--sans);text-align:center;padding:0 4px}
body[data-state=welcome] .actions button:not(#btn-open){display:none}
body[data-state=welcome] #btn-contents{visibility:hidden}

/* stage */
#stage{position:relative;min-height:0;overflow:hidden}
foliate-view{display:block;position:absolute;inset:0;width:100%;height:100%}
.edge{position:absolute;top:50%;translate:0 -50%;width:44px;height:96px;border:0;background:transparent;color:var(--ink-2);opacity:0;border-radius:12px;z-index:2;transition:opacity .2s}
.edge-prev{left:4px}.edge-next{right:4px}
.edge:hover,.edge:focus-visible{opacity:1;background:color-mix(in srgb,var(--paper-2) 80%,transparent)}
@media (hover:none),(max-width:760px){.edge{display:none}}

/* welcome */
#welcome{position:absolute;inset:0;overflow:auto;display:flex;justify-content:center;padding:clamp(20px,6vh,72px) 20px 40px}
.welcome-inner{width:min(720px,100%);margin:auto 0}
.eyebrow{font:600 12px/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:0 0 18px}
#welcome h1{font:500 clamp(34px,6.4vw,60px)/1.04 var(--serif);letter-spacing:-.02em;margin:0 0 18px;text-wrap:balance}
#welcome h1 em{font-style:italic;color:var(--accent)}
.lede{font:18px/1.55 var(--serif);color:var(--ink-2);max-width:56ch;margin:0 0 30px}
.dropzone{display:grid;justify-items:center;gap:6px;padding:30px 20px 26px;border:1.5px dashed color-mix(in srgb,var(--ink) 35%,transparent);border-radius:16px;background:var(--card);text-align:center;cursor:pointer;transition:border-color .2s,background .2s,transform .2s}
.dropzone:hover,.dropzone.over{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--card))}
.dropzone.over{transform:scale(1.01)}
.drop-big{font:italic 400 clamp(46px,9vw,76px)/1 var(--serif);color:var(--accent);letter-spacing:-.02em}
.drop-title{font:500 20px var(--serif)}
.drop-or{font-size:12px;color:var(--ink-2);text-transform:uppercase;letter-spacing:.12em}
.drop-hint{font-size:13px;color:var(--ink-2);margin-top:8px}
.small-h{font:600 12px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:34px 0 10px}
.recent-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.recent-list li{display:flex;gap:12px;align-items:baseline;padding:10px 2px;border-bottom:1px solid var(--rule)}
.recent-list .rt{font:500 16px var(--serif);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.recent-list .ra{font-size:13px;color:var(--ink-2);white-space:nowrap}
.recent-list .rp{font:13px var(--sans);color:var(--accent);white-space:nowrap}
.fine{font-size:13px;color:var(--ink-2);margin:8px 0 0}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--rule);background:var(--card);font:600 14px var(--sans);transition:background .15s,transform .1s}
.btn:hover{background:var(--paper-2)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.08);background:var(--accent)}
.btn.danger{color:#b3261e}
[data-theme=dark] .btn.danger{color:#ff9a8f}
.btn.small{min-height:32px;padding:0 12px;font-size:13px}

/* overlays */
#loading,#error,#dropveil{position:absolute;inset:0;z-index:20;display:grid;place-items:center;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(3px);text-align:center}
#loading p{margin:14px 0 0;font:italic 17px var(--serif);color:var(--ink-2)}
.spinner{width:30px;height:30px;border-radius:50%;border:3px solid var(--rule);border-top-color:var(--accent);animation:spin .8s linear infinite;margin:0 auto}
@keyframes spin{to{transform:rotate(360deg)}}
.error-card{width:min(440px,calc(100% - 40px));background:var(--card);border:1px solid var(--rule);border-radius:16px;padding:24px;box-shadow:var(--shadow);text-align:left}
.error-card h2{font:500 24px var(--serif);margin:0 0 8px}
.error-card p{margin:0 0 18px;color:var(--ink-2);overflow-wrap:anywhere}
#dropveil{border:3px dashed var(--accent);margin:10px;border-radius:18px;font:italic 34px var(--serif);color:var(--accent);pointer-events:none}

/* footer locator */
.locator{flex:1;min-width:0;display:flex;align-items:center;gap:14px}
.pagebox{display:grid;grid-template-columns:auto auto;grid-template-areas:"k k" "n o";align-items:baseline;justify-content:start;column-gap:6px;min-width:88px;padding:4px 14px 5px;border:1px solid var(--rule);background:var(--card);border-radius:12px;text-align:left;line-height:1}
.pagebox:hover{border-color:var(--accent)}
.pb-kicker{grid-area:k;font:700 9.5px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin-bottom:3px}
.pb-num{grid-area:n;font:500 30px/1 var(--serif);color:var(--accent);font-variant-numeric:lining-nums tabular-nums;letter-spacing:-.01em}
.pb-num.long{font-size:22px}
.pb-of{grid-area:o;font:13px var(--serif);color:var(--ink-2)}
.pagebox.nopages .pb-num{font-size:19px;color:var(--ink-2)}
.loc-right{flex:1;min-width:0;display:grid;gap:3px}
.chapter{font:italic 14px/1.2 var(--serif);color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
input[type=range]{width:100%;height:22px;margin:0;background:transparent;-webkit-appearance:none;appearance:none}
input[type=range]::-webkit-slider-runnable-track{height:3px;border-radius:2px;background:var(--rule)}
input[type=range]::-moz-range-track{height:3px;border-radius:2px;background:var(--rule)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-6.5px;border-radius:50%;background:var(--accent);border:2px solid var(--paper)}
input[type=range]::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:var(--accent);border:2px solid var(--paper)}
@media (max-width:560px){.locator{gap:10px}.pagebox{min-width:74px;padding:4px 10px}.pb-num{font-size:26px}.titles{align-items:flex-start;text-align:left}.actions .icon-btn{width:40px}}

/* popovers */
.pop{position:absolute;z-index:30;background:var(--card);border:1px solid var(--rule);border-radius:14px;box-shadow:var(--shadow);padding:16px}
.goto{left:max(10px,env(safe-area-inset-left));bottom:calc(var(--bar-h) + 30px + env(safe-area-inset-bottom));width:min(300px,calc(100% - 20px))}
.goto label{display:block;font:600 13px var(--sans);margin-bottom:8px}
.row{display:flex;gap:8px}
input[type=text],input[type=search],textarea{width:100%;min-height:42px;padding:8px 12px;border-radius:10px;border:1px solid var(--rule);background:var(--paper);color:var(--ink);font:16px var(--serif)}
textarea{min-height:84px;resize:vertical;font-family:var(--sans);font-size:15px}
.settings{top:calc(var(--bar-h) + 6px + env(safe-area-inset-top));right:10px;width:min(340px,calc(100% - 20px));display:grid;gap:14px}
.field{display:grid;grid-template-columns:84px 1fr;align-items:center;gap:10px}
.flabel{font:600 12px var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.seg{display:flex;border:1px solid var(--rule);border-radius:10px;overflow:hidden;background:var(--paper)}
.seg button{flex:1;min-height:38px;border:0;background:transparent;font:500 14px var(--sans);display:flex;align-items:center;justify-content:center;gap:6px;border-right:1px solid var(--rule)}
.seg button:last-child{border-right:0}
.seg button[aria-checked=true]{background:var(--accent);color:var(--accent-ink)}
.seg button:disabled{opacity:.4;cursor:not-allowed}
.face-serif{font-family:var(--serif)!important}
.sw{width:12px;height:12px;border-radius:50%;border:1px solid rgba(0,0,0,.3);display:inline-block}
.sw-light{background:#f6f0e4}.sw-sepia{background:#e6d4ab}.sw-dark{background:#1a1715}
.stepper{display:flex;align-items:center;border:1px solid var(--rule);border-radius:10px;overflow:hidden;background:var(--paper)}
.stepper button{width:52px;min-height:38px;border:0;background:transparent;font:600 15px var(--serif)}
.stepper button:hover{background:var(--paper-2)}
.stepper output{flex:1;text-align:center;font:500 14px var(--sans)}

/* panel */
#scrim{position:fixed;inset:0;z-index:39;background:rgba(20,12,4,.35)}
#panel{position:fixed;top:0;bottom:0;left:0;z-index:40;width:min(420px,100vw);background:var(--paper);border-right:1px solid var(--rule);box-shadow:var(--shadow);display:flex;flex-direction:column;padding-top:env(safe-area-inset-top);animation:slide .22s cubic-bezier(.2,.8,.2,1)}
@keyframes slide{from{transform:translateX(-24px);opacity:0}}
.panel-head{display:flex;align-items:center;gap:6px;padding:8px 8px 0 12px;border-bottom:1px solid var(--rule)}
.tabs{flex:1;display:flex;gap:2px;overflow-x:auto}
.tabs button{border:0;background:transparent;padding:10px 10px 11px;font:600 14px var(--sans);color:var(--ink-2);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--accent)}
.panes{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain}
.panes section{padding:14px 16px 28px}
#toc ul{list-style:none;margin:0;padding:0}
#toc ul ul{padding-left:16px;border-left:1px solid var(--rule);margin-left:6px}
#toc button{display:block;width:100%;text-align:left;padding:9px 10px;border:0;background:transparent;border-radius:8px;font:16px/1.3 var(--serif)}
#toc button:hover{background:var(--paper-2)}
#toc button[aria-current=true]{color:var(--accent);font-weight:600;background:color-mix(in srgb,var(--accent) 9%,transparent)}
#search-form{display:flex;gap:8px}
.results,.notes{list-style:none;margin:12px 0 0;padding:0}
.results h3{font:600 12px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2);margin:16px 0 4px}
.results button{display:block;width:100%;text-align:left;padding:10px;border:0;border-bottom:1px solid var(--rule);background:transparent;font:15px/1.45 var(--serif);border-radius:6px}
.results button:hover{background:var(--paper-2)}
.results mark{background:color-mix(in srgb,var(--accent) 28%,transparent);color:inherit;border-radius:3px;padding:0 1px}
.export-row{display:flex;flex-wrap:wrap;gap:8px}
.note{margin-top:12px;padding:14px;border:1px solid var(--rule);border-left:4px solid var(--hl,#e8c547);border-radius:10px;background:var(--card)}
.note .chip{margin-bottom:6px}
.note blockquote{margin:0 0 8px;font:italic 16px/1.5 var(--serif)}
.note .nbody{margin:0 0 10px;font:15px/1.45 var(--sans);white-space:pre-wrap}
.note .cite{font:13px var(--sans);color:var(--ink-2);margin:0 0 10px}
.note .nact{display:flex;flex-wrap:wrap;gap:6px}
.empty{color:var(--ink-2);font:italic 16px/1.5 var(--serif);padding:8px 2px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);font:700 12px/1.6 var(--sans);letter-spacing:.02em}
.chip.warn{background:color-mix(in srgb,#b8860b 16%,transparent);color:#8a6200}
[data-theme=dark] .chip.warn{color:#e5be5b}
#book-info h2{font:500 24px/1.15 var(--serif);margin:4px 0 2px}
#book-info .by{color:var(--ink-2);font:italic 16px var(--serif);margin:0 0 16px}
#book-info dl{margin:16px 0;display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:14px}
#book-info dt{color:var(--ink-2)}
#book-info dd{margin:0;overflow-wrap:anywhere}
#book-info label{display:block;font:600 13px var(--sans);margin:18px 0 6px}

/* selection sheet */
.sheet{position:absolute;z-index:25;left:50%;translate:-50% 0;bottom:calc(var(--bar-h) + 40px + env(safe-area-inset-bottom));width:min(560px,calc(100% - 20px));background:var(--card);color:var(--ink);border:1px solid var(--rule);border-radius:16px;box-shadow:var(--shadow);padding:14px 14px 12px;animation:rise .18s ease-out}
@keyframes rise{from{transform:translateY(8px);opacity:0}}
.sheet .q{margin:6px 0 8px;font:italic 16px/1.45 var(--serif);max-height:5.8em;overflow:auto;color:var(--ink)}
.sheet .mla{font:500 15px/1.4 var(--serif);margin:0 0 10px;padding:8px 10px;background:var(--paper);border-radius:8px;overflow-wrap:anywhere}
.sheet .why{font:12.5px/1.4 var(--sans);color:var(--ink-2);margin:-4px 0 10px}
.sheet .why.warn{color:#8a6200}
[data-theme=dark] .sheet .why.warn{color:#e5be5b}
.sheet .acts{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.sheet .sp{flex:1}
.colors{display:flex;gap:6px}
.colors button{width:26px;height:26px;border-radius:50%;border:2px solid transparent;background:var(--c);box-shadow:inset 0 0 0 1px rgba(0,0,0,.25)}
.colors button[aria-pressed=true]{border-color:var(--ink)}
.sheet textarea{margin:0 0 10px}
.sheet-head{display:flex;align-items:center;gap:8px}

#toast{position:fixed;left:50%;bottom:calc(90px + env(safe-area-inset-bottom));translate:-50% 8px;z-index:60;background:var(--ink);color:var(--paper);padding:9px 16px;border-radius:999px;font:500 14px var(--sans);opacity:0;pointer-events:none;transition:opacity .2s,translate .2s;max-width:calc(100% - 24px);text-align:center}
#toast.show{opacity:1;translate:-50% 0}
.noscript{padding:20px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* archive lookup */
.archive{margin-top:10px;border-top:1px solid var(--rule);padding-top:8px}
.archive summary{cursor:pointer;font:600 13px var(--sans);color:var(--ink-2);min-height:28px}
.archive .why{margin:6px 0 8px}
.archive input{min-height:36px;font-size:14px}
.matches{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:6px;max-height:9em;overflow:auto}
.matches li{display:flex;gap:8px;align-items:center}
.matches .why{margin:0;flex:1}

body:not([data-state=welcome]) #welcome{display:none}
body[data-state=welcome] #footer{display:none}
.sheet{max-height:min(70dvh,520px);overflow:auto}

/* Local bookshelf, using the same paper and editorial typography as the reader. */
body:not([data-state=reading]) #btn-home{display:none}
body[data-state=welcome] #recent{display:none!important}
body[data-state=welcome] .welcome-inner{margin:0}
body[data-state=welcome] .dropzone{padding:20px}
body[data-state=welcome] .drop-big,body[data-state=welcome] .drop-or{display:none}
.library-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.library-card{min-width:0;border:1px solid var(--rule);border-radius:12px;background:var(--card);padding:14px;display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.library-book{display:flex;gap:15px;width:100%;text-align:left;background:none;border:0;padding:0;align-items:center;border-radius:5px}
.library-book:hover .library-title{color:var(--accent)}
.library-cover{width:70px;height:104px;flex-shrink:0;background:var(--paper-2);border-radius:2px 5px 5px 2px;overflow:hidden;display:grid;place-items:center;box-shadow:2px 3px 6px #0002}
.library-cover img{width:100%;height:100%;object-fit:cover}
.library-initial{font:italic 42px var(--serif);color:var(--accent)}
.library-info{min-width:0;display:flex;flex-direction:column;gap:5px;overflow-wrap:anywhere}
.library-title{font:600 20px/1.15 var(--serif)}
.library-author{font:14px/1.3 var(--serif);color:var(--ink-2)}
.library-position{font:12px/1.4 var(--sans);color:var(--accent)}
.library-remove{align-self:flex-end;color:var(--ink-2);min-height:40px}
#library-status{margin-top:18px;max-width:65ch}
@media(max-width:600px){.library-list{grid-template-columns:1fr}.library-card{gap:8px}.bar.top{gap:2px}.bar.top>.icon-btn{width:40px;flex-shrink:0}.titles{flex-shrink:1}.actions .icon-btn{width:36px}.library-title{font-size:21px}}

/* Citation builder keeps the existing paper palette; clipboard HTML has none of it. */
.citation-picker{display:grid;gap:10px;margin:10px 0 14px}
.citation-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.citation-controls label{font-size:13px;color:var(--ink-2)}
.citation-controls select{font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--rule);border-radius:8px;min-height:40px;padding:6px 9px;max-width:100%;flex:1;min-width:180px}
.citation-modes{display:flex;gap:6px;flex-wrap:wrap}
.citation-modes [aria-pressed=true]{border-color:var(--accent);color:var(--accent)}
.citation-preview{font:16px/1.5 var(--serif);padding:12px;background:var(--paper);border:1px solid var(--rule);border-radius:8px;overflow-wrap:anywhere;max-height:24vh;overflow:auto;user-select:text}
.citation-preview p{margin-top:0;margin-bottom:10px}.citation-preview p:last-child{margin-bottom:0}
.citation-copy{justify-self:start;min-height:44px}
.citation-details{border-top:1px solid var(--rule);padding-top:8px;font-size:13px}
.citation-details summary{cursor:pointer;min-height:32px;display:list-item}
.citation-fields{display:grid;gap:8px;margin-top:10px}.citation-fields label{display:grid;gap:3px}
.citation-fields input{width:100%;min-height:40px;border:1px solid var(--rule);background:var(--paper);border-radius:6px;padding:6px 8px}
.citation-guides a{color:var(--accent);display:inline-block;margin-right:8px}
.citation-warning{margin:0}
@media(max-width:480px){.citation-controls{gap:4px}.citation-controls label{width:100%}.citation-copy{width:100%}.citation-modes .btn{padding:0 10px}}

.print-boundary-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:3;user-select:none}
.print-boundary-labels span{position:absolute;color:var(--muted);font:11px/1.2 var(--sans);background:var(--paper);padding:1px 2px;border-radius:2px;opacity:.8}

.print-boundary-tick{position:absolute;width:0;height:4px;border-left:1px solid var(--muted);opacity:.65}

#print-gap{max-width:620px;color:var(--ink-2);font:11px/1.35 var(--sans);text-align:right;white-space:normal}