.error-boundary{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:var(--space-xl);background:var(--color-background)}.error-boundary__content{max-width:500px;text-align:center}.error-boundary__title{font-size:var(--font-size-xxl);font-weight:700;color:var(--color-text);margin-bottom:var(--space-md)}.error-boundary__message{font-size:var(--font-size-lg);color:var(--color-text-secondary);line-height:1.6;margin-bottom:var(--space-xl)}.error-boundary__details{text-align:left;margin-bottom:var(--space-xl);background:var(--color-surface);padding:var(--space-md);border-radius:var(--radius-md);border:1px solid var(--color-border)}.error-boundary__details summary{cursor:pointer;font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-secondary);margin-bottom:var(--space-sm)}.error-boundary__error{font-size:var(--font-size-sm);color:var(--color-text);overflow-x:auto;white-space:pre-wrap;word-break:break-word}.error-boundary__actions{display:flex;gap:var(--space-md);justify-content:center}.error-boundary__button{padding:var(--space-md) var(--space-xl);font-size:var(--font-size-md);font-weight:600;border-radius:var(--radius-full);background:var(--color-surface);color:var(--color-text);border:2px solid var(--color-border);transition:transform var(--transition-fast),box-shadow var(--transition-base)}.error-boundary__button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--color-accent)}.error-boundary__button:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.error-boundary__button--primary{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.error-boundary__button--primary:hover{border-color:var(--color-accent)}.offline-indicator{position:fixed;top:var(--space-md);left:50%;transform:translate(-50%);display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);background:#ff9800;color:#fff;font-size:var(--font-size-sm);font-weight:600;border-radius:var(--radius-full);box-shadow:var(--shadow-lg);z-index:10000;animation:slideDown .3s ease}@keyframes slideDown{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.offline-indicator__icon{font-size:var(--font-size-lg)}.welcome-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:var(--space-xl);background:var(--color-background)}.welcome-screen__content{max-width:500px;text-align:center}.welcome-screen__illustration{margin:0 auto var(--space-xl);display:flex;justify-content:center}.welcome-screen__title{font-size:var(--font-size-xxl);font-weight:600;color:var(--color-text-primary);margin:0 0 var(--space-md);line-height:1.2}.welcome-screen__description{font-size:var(--font-size-lg);color:var(--color-text-secondary);line-height:1.6;margin:0 0 var(--space-xl)}.welcome-screen__actions{display:flex;flex-direction:column;gap:var(--space-md);margin-bottom:var(--space-xl)}.welcome-screen__button{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);font-size:var(--font-size-md);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);font-family:var(--font-family);min-height:52px}.welcome-screen__button:disabled{opacity:.6;cursor:not-allowed}.welcome-screen__button--primary{background:var(--color-accent);color:#fff}.welcome-screen__button--primary:hover:not(:disabled){background:var(--color-accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px var(--color-accent-glow)}.welcome-screen__button--primary:active:not(:disabled){transform:translateY(0)}.welcome-screen__button--secondary{background:var(--color-surface);color:var(--color-text-primary);border:2px solid var(--color-border)}.welcome-screen__button--secondary:hover:not(:disabled){background:var(--color-surface-raised);border-color:var(--color-accent);transform:translateY(-1px)}.welcome-screen__button--secondary:active:not(:disabled){transform:translateY(0)}.welcome-screen__button-icon{font-size:1.25em;line-height:1}.welcome-screen__spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.welcome-screen__formats{display:flex;flex-direction:column;gap:var(--space-sm);align-items:center}.welcome-screen__formats-label{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.05em}.welcome-screen__format-tags{display:flex;gap:var(--space-sm)}.welcome-screen__format-tag{padding:var(--space-xs) var(--space-md);background:var(--color-surface);color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:600;font-family:Courier New,monospace}@media(max-width:640px){.welcome-screen{padding:var(--space-lg)}.welcome-screen__title{font-size:var(--font-size-xl)}.welcome-screen__description,.welcome-screen__button{font-size:var(--font-size-md)}}@media(prefers-reduced-motion:reduce){.welcome-screen__button{transition:none}.welcome-screen__button:hover:not(:disabled){transform:none}.welcome-screen__spinner{animation:none;border-top-color:var(--color-text-secondary)}}.library{max-width:600px;margin:0 auto;padding:var(--space-lg);min-height:100vh}.library__header{text-align:center;padding:var(--space-xxl) 0 var(--space-xl)}.library__title{font-size:var(--font-size-xxl);font-weight:600;margin-bottom:var(--space-sm);letter-spacing:-.01em}.library__tagline{color:var(--color-text-secondary);font-size:var(--font-size-md);letter-spacing:.02em}.library__upload{text-align:center;margin-bottom:var(--space-xl)}.library__upload-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);background:var(--color-accent);color:var(--color-background);font-size:var(--font-size-lg);font-weight:600;border-radius:var(--radius-lg);min-height:56px;min-width:200px;transition:background var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-base);box-shadow:0 2px 8px var(--color-accent-glow)}.library__upload-btn:hover:not(:disabled){background:var(--color-accent-hover);transform:translateY(-2px);box-shadow:0 6px 20px var(--color-accent-glow)}.library__upload-btn:active:not(:disabled){transform:translateY(0);box-shadow:0 1px 4px var(--color-accent-glow)}.library__upload-btn:disabled{opacity:.6;cursor:not-allowed}.library__upload-hint{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin-top:var(--space-sm)}.library__file-input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.library__error{background:#fde8e8;color:#9b1c1c;padding:var(--space-md) var(--space-lg);border-radius:var(--radius-md);margin-bottom:var(--space-lg);font-size:var(--font-size-md);border-left:4px solid #9b1c1c;line-height:1.6}[data-theme=undergrowth] .library__error,[data-theme=nightshade] .library__error{background:#3b1c1c;color:#f8b4b4;border-left-color:#f8b4b4}.library__empty-state{text-align:center;padding:var(--space-xxl) var(--space-lg);border:2px dashed var(--color-border);border-radius:var(--radius-lg);margin-top:var(--space-lg)}.library__empty{color:var(--color-text-secondary);font-size:var(--font-size-lg);line-height:1.8;margin-bottom:var(--space-md)}.library__demo-btn{display:inline-flex;align-items:center;gap:var(--space-xs);padding:var(--space-md) var(--space-xl);background:var(--color-accent);color:#fff;font-size:var(--font-size-lg);font-weight:600;border-radius:var(--radius-full);transition:transform var(--transition-fast),box-shadow var(--transition-base);box-shadow:var(--shadow-md);margin-bottom:var(--space-sm)}.library__demo-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.library__demo-btn:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.library__demo-hint{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--space-xs)}.library__list{list-style:none;display:flex;flex-direction:column;gap:var(--space-sm)}.library__item{display:flex;align-items:center;gap:var(--space-sm)}.library__book{flex:1;display:flex;flex-direction:column;gap:var(--space-xs);padding:var(--space-md) var(--space-lg);background:var(--color-surface);border-radius:var(--radius-md);text-align:left;min-height:56px;transition:box-shadow var(--transition-base),transform var(--transition-fast),background var(--transition-fast);border:1px solid transparent}.library__book:hover{box-shadow:var(--shadow-colored);transform:translateY(-1px);border-color:var(--color-border)}.library__book:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.library__book--recent{border-left:4px solid var(--color-accent);background:var(--color-surface-raised)}.library__book-info{display:flex;flex-direction:column;gap:2px}.library__book-title{font-size:var(--font-size-md);font-weight:600}.library__book-author{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.library__continue{font-size:var(--font-size-sm);color:var(--color-accent);font-weight:600}.library__progress{height:4px;background:var(--color-border);border-radius:var(--radius-full);overflow:hidden;margin-top:var(--space-xs)}.library__progress-bar{height:100%;background:linear-gradient(90deg,var(--color-accent),var(--color-accent-hover));border-radius:var(--radius-full);transition:width .3s ease}.library__delete{width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xl);color:var(--color-text-secondary);border-radius:var(--radius-full);flex-shrink:0;opacity:.4;transition:opacity var(--transition-fast),background var(--transition-fast),color var(--transition-fast)}.library__item:hover .library__delete{opacity:.7}.library__delete:hover{background:var(--color-surface);color:var(--color-text-primary);opacity:1}.library__header-main{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.library__streak{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:linear-gradient(135deg,#ff6b6b,#ff8e53);border-radius:var(--radius-full);color:#fff;font-weight:600;font-size:.9rem;box-shadow:0 2px 8px #ff6b6b4d;animation:streakPulse 2s ease-in-out infinite}.library__streak-emoji{font-size:1.2rem;animation:flameFlicker 1s ease-in-out infinite alternate}.library__streak-text{white-space:nowrap}@keyframes streakPulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes flameFlicker{0%,to{transform:scale(1) rotate(-2deg)}50%{transform:scale(1.1) rotate(2deg)}}@media(max-width:600px){.library__header-main{flex-direction:column}.library__streak{align-self:flex-start}}.reader{display:flex;flex-direction:column;height:100vh;overflow:hidden}.reader__header{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--color-surface);border-bottom:1px solid var(--color-border);flex-shrink:0;min-height:56px;box-shadow:0 1px 3px #0000000a}.reader__back,.reader__settings-btn,.reader__theme-btn,.reader__bookmark-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);flex-shrink:0;color:var(--color-text-primary);transition:background var(--transition-fast),transform var(--transition-fast)}.reader__back:hover,.reader__settings-btn:hover,.reader__theme-btn:hover{background:var(--color-border);transform:scale(1.05)}.reader__back:active,.reader__settings-btn:active,.reader__theme-btn:active{transform:scale(.95)}.reader__theme-picker{position:relative}.reader__theme-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9}.reader__theme-dropdown{position:absolute;top:100%;right:0;margin-top:var(--space-xs);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:10;min-width:180px;padding:var(--space-xs);animation:dropdown-in .2s cubic-bezier(.2,0,0,1);transform-origin:top right}@keyframes dropdown-in{0%{opacity:0;transform:scale(.95) translateY(-4px)}to{opacity:1;transform:scale(1) translateY(0)}}.reader__theme-option{display:flex;align-items:center;gap:var(--space-sm);width:100%;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);font-size:var(--font-size-md);color:var(--color-text-primary);text-align:left;min-height:44px;transition:background var(--transition-fast)}.reader__theme-option:hover{background:var(--color-border)}.reader__theme-option--active{font-weight:600;background:var(--color-accent-glow)}.reader__theme-swatch{width:24px;height:24px;border-radius:var(--radius-full);border:2px solid var(--color-border);flex-shrink:0;box-shadow:inset 0 1px 3px #00000026;transition:transform var(--transition-fast)}.reader__theme-option:hover .reader__theme-swatch{transform:scale(1.1)}.reader__title{flex:1;font-size:var(--font-size-md);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center}.text-display{flex:1;overflow-y:auto;padding:var(--space-xl) var(--space-md);scroll-behavior:smooth;-webkit-overflow-scrolling:touch;background:var(--color-background)}.text-display__content{margin:0 auto;padding:var(--space-lg) var(--space-lg) var(--space-xxl);max-width:calc(var(--max-line-width) + var(--space-xl) * 2);background:var(--color-surface-raised);border-radius:var(--radius-lg);box-shadow:var(--shadow-colored);min-height:40vh}.word{transition:background var(--highlight-transition),opacity var(--highlight-transition),box-shadow var(--highlight-transition);border-radius:3px;padding:1px 2px;margin:0 -1px}.word--active{background:var(--highlight-bg);box-shadow:0 0 0 2px var(--highlight-glow),0 1px 4px var(--highlight-glow)}.word--spoken{opacity:var(--text-spoken-opacity)}.text-display__resync{position:fixed;bottom:120px;left:50%;transform:translate(-50%);padding:var(--space-sm) var(--space-lg);background:var(--color-accent);color:var(--color-background);border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:600;box-shadow:var(--shadow-md),0 0 0 4px var(--color-accent-glow);z-index:10;animation:resync-in .3s cubic-bezier(.2,0,0,1);transition:background var(--transition-fast),transform var(--transition-fast)}.text-display__resync:hover{background:var(--color-accent-hover);transform:translate(-50%) scale(1.04)}.text-display__resync:active{transform:translate(-50%) scale(.97)}@keyframes resync-in{0%{opacity:0;transform:translate(-50%) translateY(8px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.player{flex-shrink:0;padding:var(--space-md) var(--space-md) var(--space-lg);background:var(--color-surface);border-top:1px solid var(--color-border);box-shadow:0 -2px 8px #0000000a}.player__row{display:flex;align-items:center;justify-content:center;gap:var(--space-lg);margin-bottom:var(--space-sm)}.player__btn{display:flex;align-items:center;justify-content:center;border-radius:var(--radius-full);color:var(--color-text-primary)}.player__btn--play{width:56px;height:56px;background:var(--color-accent);color:var(--color-background);box-shadow:0 2px 8px var(--color-accent-glow);transition:background var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-base)}.player__btn--play:hover{background:var(--color-accent-hover);transform:scale(1.06);box-shadow:0 4px 14px var(--color-accent-glow),0 0 0 4px var(--color-accent-glow)}.player__btn--play:active{transform:scale(.95)}.player__btn--secondary{width:48px;height:48px;transition:background var(--transition-fast),transform var(--transition-fast),color var(--transition-fast)}.player__btn--secondary:hover{background:var(--color-border);color:var(--color-accent);transform:scale(1.08)}.player__btn--secondary:active{transform:scale(.93)}.player__info{display:flex;justify-content:center;align-items:center;gap:var(--space-lg)}.player__speed,.player__chapter{font-size:var(--font-size-sm);color:var(--color-text-secondary);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);transition:background var(--transition-fast),color var(--transition-fast);letter-spacing:.02em}.player__speed:hover,.player__chapter:hover{background:var(--color-border);color:var(--color-text-primary)}.reader__chapter-list{position:fixed;bottom:130px;left:50%;transform:translate(-50%);width:90%;max-width:400px;max-height:300px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:20;overflow:hidden;animation:chapter-list-in .25s cubic-bezier(.2,0,0,1)}@keyframes chapter-list-in{0%{opacity:0;transform:translate(-50%) translateY(12px) scale(.97)}to{opacity:1;transform:translate(-50%) translateY(0) scale(1)}}.reader__chapter-list-inner{overflow-y:auto;max-height:300px;padding:var(--space-sm)}.reader__chapter-item{display:block;width:100%;padding:var(--space-sm) var(--space-md);text-align:left;font-size:var(--font-size-md);border-radius:var(--radius-sm);color:var(--color-text-primary);transition:background var(--transition-fast)}.reader__chapter-item:hover{background:var(--color-border)}.reader__chapter-item--active{background:var(--color-accent);color:var(--color-background);font-weight:600}.reader__chapter-item--active:hover{background:var(--color-accent-hover)}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000;z-index:100;display:flex;align-items:flex-end;animation:overlay-in .3s ease forwards}@keyframes overlay-in{to{background:#0006}}.settings-drawer{width:100%;max-height:80vh;background:var(--color-background);border-radius:var(--radius-lg) var(--radius-lg) 0 0;overflow-y:auto;animation:drawer-slide-up .35s cubic-bezier(.2,0,0,1);box-shadow:0 -4px 24px #0000001f}@keyframes drawer-slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.settings-drawer__header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md) var(--space-lg);padding-top:var(--space-lg);border-bottom:1px solid var(--color-border);position:relative}.settings-drawer__header:before{content:"";position:absolute;top:var(--space-sm);left:50%;transform:translate(-50%);width:36px;height:4px;background:var(--color-border);border-radius:var(--radius-full)}.settings-drawer__header h2{font-size:var(--font-size-lg);font-weight:600}.settings-drawer__close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xl);color:var(--color-text-secondary);border-radius:var(--radius-full);transition:background var(--transition-fast),color var(--transition-fast),transform var(--transition-fast)}.settings-drawer__close:hover{background:var(--color-surface);color:var(--color-text-primary);transform:scale(1.1)}.settings-drawer__close:active{transform:scale(.9)}.settings-drawer__body{padding:var(--space-lg);display:flex;flex-direction:column;gap:var(--space-lg)}.settings-field{border:none}.settings-field legend{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-secondary);letter-spacing:.05em;text-transform:uppercase;margin-bottom:var(--space-sm)}.settings-field__options{display:flex;flex-wrap:wrap;gap:var(--space-sm);align-items:center}.settings-field__hint{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-style:italic}.settings-chip{padding:var(--space-sm) var(--space-md);background:var(--color-surface);border:2px solid transparent;border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-primary);transition:border-color var(--transition-fast),background var(--transition-fast),color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast)}.settings-chip:hover{border-color:var(--color-border);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.settings-chip--active{border-color:var(--color-accent);background:var(--color-accent);color:var(--color-background);box-shadow:0 2px 8px var(--color-accent-glow)}.settings-chip--active:hover{transform:translateY(-1px);box-shadow:0 4px 12px var(--color-accent-glow)}.settings-swatch{width:44px;height:44px;border-radius:var(--radius-full);border:3px solid transparent;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 2px 4px #0000001f;transition:border-color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast)}.settings-swatch:hover{transform:scale(1.12);box-shadow:inset 0 2px 4px #0000001f,0 2px 8px #0000001a}.settings-swatch--active{border-color:var(--color-accent);box-shadow:inset 0 2px 4px #0000001f,0 0 0 3px var(--color-accent-glow)}.settings-field__stepper{display:flex;align-items:center;gap:var(--space-md)}.settings-stepper-btn{width:44px;height:44px;background:var(--color-surface);border-radius:var(--radius-full);font-size:var(--font-size-md);font-weight:600;display:flex;align-items:center;justify-content:center;color:var(--color-text-primary);transition:background var(--transition-fast),transform var(--transition-fast)}.settings-stepper-btn:hover{background:var(--color-border);transform:scale(1.08)}.settings-stepper-btn:active{transform:scale(.92)}.settings-stepper-value{font-size:var(--font-size-md);font-weight:600;min-width:60px;text-align:center}.settings-select{width:100%;padding:var(--space-sm) var(--space-md);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-md);color:var(--color-text-primary);transition:border-color var(--transition-fast),box-shadow 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onboardingSlideUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}.onboarding__skip{position:absolute;top:1rem;right:1rem;background:transparent;border:none;color:#6b6456;font-size:.9rem;cursor:pointer;padding:.5rem;border-radius:4px;transition:all .2s}.onboarding__skip:hover{background:#0000000d;color:#2c2416}.onboarding__content{text-align:center;padding:1rem 0 1.5rem}.onboarding__emoji{font-size:4rem;margin-bottom:1rem;animation:emojiFloat 2s ease-in-out infinite}@keyframes emojiFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.onboarding__title{font-size:1.75rem;font-weight:700;color:#2c2416;margin:0 0 .5rem}.onboarding__description{font-size:1rem;color:#6b6456;margin:0 0 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