.reading-room {padding:36px 0 54px}.reading-heading {display:flex;align-items:center;justify-content:space-between;gap:30px;margin-bottom:28px}.reading-heading>div{min-width:0}.reading-heading h1 {font-size:clamp(1.5rem,3.2vw,2.4rem);line-height:1.7;margin:10px 0 5px}.reading-heading p {font-size:13px;margin:0}.reading-download {display:inline-flex;align-items:center;gap:8px;white-space:nowrap;padding:10px 15px;border:1px solid #bdd2dd;border-radius:12px;text-decoration:none;color:#345e74;font-size:12px}.reading-download svg{width:19px;height:19px}
.book-studio {--room-bg:#dce7eb;--room-surface:#f2f6f6;--room-ink:#2b5066;--room-muted:#617c8c;--room-border:#c4d5dc;--room-paper:#fff;position:relative;border:1px solid var(--room-border);border-radius:24px;overflow:hidden;background:var(--room-bg);color:var(--room-ink);box-shadow:0 30px 65px #24425712;isolation:isolate}
.book-studio[data-theme=warm] {--room-bg:#e7dfd2;--room-surface:#f4eee5;--room-ink:#66513f;--room-muted:#806e5d;--room-border:#d6c9b6;--room-paper:#fff8ea}
.book-studio[data-theme=night] {--room-bg:#172633;--room-surface:#233644;--room-ink:#e0ebf0;--room-muted:#a8bdc9;--room-border:#3a505e;--room-paper:#f1f3f1;color-scheme:dark}
.book-studio__bar {display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 23px;background:var(--room-surface);border-bottom:1px solid var(--room-border)}
.book-studio__identity {display:flex;align-items:center;gap:11px;font-size:12px}.book-studio__identity strong{color:var(--room-ink)}.book-studio__identity>span:last-child{border-inline-start:1px solid var(--room-border);padding-inline-start:12px;color:var(--room-muted);font-size:11px}.reading-indicator{width:7px;height:7px;flex-shrink:0;background:#a6768a;border-radius:50%}
.reading-settings {display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 20px;background:var(--room-surface);border-bottom:1px solid var(--room-border);flex-wrap:wrap}.reading-settings__group {display:flex;align-items:center;gap:5px}.book-studio .reading-tool {display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;min-width:40px;padding:7px 11px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--room-ink);font-family:inherit;font-size:12px;cursor:pointer;line-height:1.4}.reading-tool svg {width:18px;height:18px}.book-studio .reading-tool:hover {background:var(--room-bg);border-color:var(--room-border)}.book-studio .reading-tool:disabled,.book-studio .reading-nav:disabled {opacity:.4;cursor:not-allowed}.book-studio select {font-size:11px;min-height:40px;padding:7px 10px;background:var(--room-surface)!important;color:var(--room-ink)!important;border:1px solid var(--room-border)!important;border-radius:9px!important;max-width:130px}.reading-zoom {font-variant-numeric:tabular-nums}
.reading-themes {display:flex;align-items:center;gap:4px}.reading-themes button{width:40px;height:40px;position:relative;border:1px solid transparent;border-radius:50%;background:none;cursor:pointer}.reading-themes button:before{content:"";position:absolute;inset:8px;border-radius:50%;border:1px solid #9cabb655;background:#eef4f5}.reading-themes [data-reader-theme=warm]:before{background:#dbc8ab}.reading-themes [data-reader-theme=night]:before{background:#203849}.reading-themes button[aria-pressed=true]{border-color:var(--room-muted)}
.reading-resume {display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;padding:10px 20px;background:var(--room-surface);border-bottom:1px solid var(--room-border);font-size:12px}.reading-resume b{color:var(--room-ink)}
.reading-stage {padding:38px 24px 44px;overflow:auto;min-height:420px;max-height:85vh;background:radial-gradient(ellipse at 50% 20%,#ffffff22,transparent 75%),var(--room-bg);overscroll-behavior:contain;scrollbar-color:#8ea7b3 transparent;direction:ltr}
.reading-spread {display:flex;align-items:start;justify-content:center;width:max-content;min-width:100%;margin-inline:auto;gap:0;perspective:1600px}
.reading-sheet {position:relative;flex:none;margin:0 0 10px;background:var(--room-paper);border-radius:2px;box-shadow:0 3px 0 #c8cbd0,0 5px 0 #eef1f1,0 7px 0 #bfc7ca,0 18px 30px #152b3930;color:#354757;line-height:1;overflow:hidden;animation:reading-enter .24s ease-out;isolation:isolate}
.reading-sheet canvas {display:block;max-width:none;background:#fff}.book-studio[data-theme=warm] .reading-sheet canvas{filter:sepia(.14)}.book-studio[data-theme=night] .reading-sheet canvas{filter:brightness(.86)}
.reading-spread.is-spread .reading-sheet:after {content:"";position:absolute;inset:0;pointer-events:none;z-index:2;box-shadow:inset -16px 0 20px -20px #192b41aa}
.reading-spread.is-spread .reading-sheet:first-child:after {box-shadow:inset 16px 0 20px -20px #192b41aa}
.reading-spread[dir=ltr].is-spread .reading-sheet:after {box-shadow:inset 16px 0 20px -20px #192b41aa}
.reading-spread[dir=ltr].is-spread .reading-sheet:first-child:after {box-shadow:inset -16px 0 20px -20px #192b41aa}
.reading-message {color:var(--room-muted);font-size:13px;direction:rtl;text-align:center;max-width:540px;margin:70px auto;line-height:2}
.reading-controls {display:flex;align-items:center;justify-content:space-between;gap:10px;padding:18px 22px;background:var(--room-surface);border-top:1px solid var(--room-border)}
.book-studio .reading-nav {display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--room-border);border-radius:11px;background:var(--room-bg);color:var(--room-ink);padding:11px 20px;min-height:44px;cursor:pointer;font-family:inherit;font-size:12px;font-weight:700}.reading-nav span {font-size:18px;line-height:1}.reading-jump {display:flex;align-items:center;gap:8px;font-size:12px;color:var(--room-muted)}.book-studio .reading-jump input {width:64px;min-height:40px;padding:5px;text-align:center;background:var(--room-bg)!important;color:var(--room-ink)!important;border:1px solid var(--room-border)!important;border-radius:8px!important;appearance:textfield;-moz-appearance:textfield;font-family:inherit}.reading-jump input::-webkit-inner-spin-button{display:none}
.reading-progress {height:3px;background:var(--room-border)}.reading-progress span{display:block;height:100%;width:0;background:#ba8799;transition:width .2s}
.reading-status,.reading-fallback {display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;padding:12px 22px;font-size:10px;color:var(--room-muted);background:var(--room-surface)}.reading-fallback{padding-top:0}.reading-fallback a{color:var(--room-ink);text-underline-offset:4px;min-height:30px;display:flex;align-items:center}
.reading-note {text-align:center;font-size:11px;margin:20px auto;max-width:740px;line-height:2}
.reading-sr-only {position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.book-studio:fullscreen,.book-studio.is-focused {width:100%;height:100dvh;border-radius:0;display:flex;flex-direction:column;overflow:auto}.book-studio.is-focused{position:fixed;inset:0;z-index:1500}.reading-focus-open{overflow:hidden}.book-studio:fullscreen .reading-stage,.book-studio.is-focused .reading-stage{flex:1;min-height:0;max-height:none}.book-studio:fullscreen .reading-status,.book-studio.is-focused .reading-status{padding-block:8px}
/* Text selection layout adapted from PDF.js 5.6.205 (Apache-2.0).
   The corresponding license is in static/vendor/pdfjs/LICENSE. */
.reading-sheet .textLayer {position:absolute;inset:0;text-align:initial;overflow:clip;line-height:1;text-size-adjust:none;forced-color-adjust:none;transform-origin:0 0;caret-color:CanvasText;z-index:1;--min-font-size:1;--text-scale-factor:calc(var(--total-scale-factor) * var(--min-font-size));--min-font-size-inv:calc(1 / var(--min-font-size))}
.reading-sheet .textLayer :is(span,br){color:transparent;position:absolute;white-space:pre;cursor:text;transform-origin:0 0}
.reading-sheet .textLayer>:not(.markedContent),.reading-sheet .textLayer .markedContent span:not(.markedContent){z-index:1;--font-height:0;--scale-x:1;--rotate:0deg;font-size:calc(var(--text-scale-factor) * var(--font-height));transform:rotate(var(--rotate)) scaleX(var(--scale-x)) scale(var(--min-font-size-inv))}
.reading-sheet .textLayer .markedContent{display:contents}.reading-sheet .textLayer ::selection {background:#88bdd280;color:transparent}.reading-sheet .textLayer br::selection{background:transparent}
@keyframes reading-enter{from{opacity:.6;transform:translateY(5px)}to{opacity:1;transform:none}}
@media(max-width:700px){.reading-heading{align-items:start;flex-direction:column;gap:15px}.reading-room{padding-top:24px}.book-studio{border-radius:17px}.book-studio__bar{padding:13px 14px}.book-studio__identity>span:last-child{display:none}.reading-settings{padding:10px;gap:8px}.reading-settings__group{gap:1px}.book-studio select{font-size:10px;max-width:107px;padding-inline:5px}.reading-themes{margin-inline-start:auto}.reading-stage{padding:22px 12px 28px;min-height:280px}.reading-controls{padding:12px 10px;gap:6px;flex-wrap:wrap}.book-studio .reading-nav{padding:8px 12px;min-width:72px}.reading-jump{gap:4px;font-size:11px}.book-studio .reading-jump input{width:48px}.reading-jump .reading-tool{padding:6px;min-width:32px}.reading-status,.reading-fallback{padding-inline:14px;font-size:10px}}
@media(max-width:380px){.reading-jump{order:3;justify-content:center;width:100%}.reading-controls{row-gap:10px}}
@media(prefers-reduced-motion:reduce){.reading-sheet{animation:none}.reading-progress span{transition:none}}

/* A bounded stage keeps fit-to-page truthful in every viewport. */
.book-studio {display:flex;flex-direction:column;height:clamp(580px,88dvh,1050px);border-radius:22px;box-shadow:0 24px 70px #173b551a}
.book-studio>* {flex-shrink:0}
.book-studio .reading-stage {flex:1 1 0;min-height:0;max-height:none;padding:24px;scrollbar-gutter:stable both-edges}
.reading-spread {min-height:100%;align-items:center}
.reading-sheet {margin:0;box-shadow:0 1px 2px #122d3c24,0 8px 24px #122d3c26}
.reading-emblem {display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--room-border);background:var(--room-bg);border-radius:11px}
.reading-emblem svg {width:20px;height:20px}
.book-studio__bar {padding:12px 20px}.book-studio__identity strong{font-size:14px}
.reading-settings {padding:8px 18px}.reading-settings__group {border:1px solid var(--room-border);border-radius:12px;padding:3px}
.reading-layout-tools {border:0;padding:0;gap:6px}
.reading-controls {padding:12px 20px}
.book-studio .reading-nav {background:var(--room-ink);color:var(--room-surface);border:0}
.reading-status {padding-block:8px}.reading-fallback{padding-bottom:8px}
.book-studio :focus-visible {outline:2px solid var(--room-ink);outline-offset:3px}
.book-studio:fullscreen,.book-studio.is-focused {height:100vh;height:100dvh;overflow:hidden;border:0;max-width:none;box-shadow:none}
.book-studio:fullscreen .reading-fallback,.book-studio.is-focused .reading-fallback {display:none}
.book-studio:fullscreen .reading-stage,.book-studio.is-focused .reading-stage {flex:1 1 0;min-height:0;padding:20px}
@media(max-width:700px){
 .book-studio {height:clamp(570px,90dvh,850px)}
 .book-studio .reading-stage{padding:14px 8px}
 .reading-settings{gap:7px;padding:8px}.reading-settings__group{order:1}
 .reading-themes{order:2}.reading-layout-tools{order:3;flex-basis:100%;justify-content:center}
 .book-studio .reading-layout-tools select{flex:1;max-width:150px;font-size:11px;min-width:0}
 .reading-controls{padding:10px 8px}.reading-status>span:last-child{display:none}
 .book-studio__bar{padding:10px 12px}
}
@media(max-height:520px){
 .book-studio:is(:fullscreen,.is-focused) .book-studio__bar{padding:4px 14px}
 .book-studio:is(:fullscreen,.is-focused) .reading-settings{padding:3px 14px;flex-wrap:nowrap}
 .book-studio:is(:fullscreen,.is-focused) .reading-layout-tools{order:1;flex-basis:auto}
 .book-studio:is(:fullscreen,.is-focused) .reading-controls{padding:4px 14px}
 .book-studio:is(:fullscreen,.is-focused) .reading-status{display:none}
 .book-studio:is(:fullscreen,.is-focused) .reading-stage{padding:8px}
 .book-studio:is(:fullscreen,.is-focused) .reading-resume{padding:2px}
}