:root,:root.dark{--bg-app: #0f172a;--bg-surface: #1e293b;--bg-elevated: #334155;--bg-overlay: #475569;--bg-hover: #475569;--border-subtle: #1e293b;--border-default: #334155;--border-strong: #475569;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--text-disabled: #64748b;--accent: #3b82f6;--accent-hover: #2563eb;--accent-muted: #1e3a5f;--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--info: #06b6d4;--page-padding: 20px;--card-padding: 12px 16px;--card-padding-sm: 8px 12px;--card-padding-lg: 16px 20px;--border-radius: 0px;--border-radius-sm: 0px;--border-radius-md: 0px;--border-radius-lg: 0px;--gap-xs: 6px;--gap-sm: 8px;--gap-md: 10px;--gap-lg: 16px;--gap-xl: 24px;--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Source Code Pro", Menlo, Monaco, Consolas, "Courier New", monospace;--font-size-xs: clamp(.6875rem, 1.5vw, .75rem);--font-size-sm: clamp(.75rem, 2vw, .8125rem);--font-size-base: clamp(.8125rem, 2.5vw, .875rem);--font-size-md: clamp(.875rem, 2.5vw, .9375rem);--font-size-lg: clamp(.9375rem, 3vw, 1rem);--font-size-xl: clamp(1.125rem, 3.5vw, 1.25rem);--font-size-2xl: clamp(1.25rem, 4vw, 1.5rem);--font-size-3xl: clamp(1.5rem, 4.5vw, 1.875rem);--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--z-base: 1;--z-dropdown: 10;--z-sticky: 50;--z-modal: 100;--z-toast: 200}:root.light{--bg-app: #f1f5f9;--bg-surface: #ffffff;--bg-elevated: #f8fafc;--bg-overlay: #e2e8f0;--bg-hover: #cbd5e1;--border-subtle: #e2e8f0;--border-default: #cbd5e1;--border-strong: #94a3b8;--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--text-disabled: #94a3b8;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-muted: #dbeafe;--success: #16a34a;--warning: #d97706;--error: #dc2626;--info: #0891b2;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 4px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 8px rgba(0, 0, 0, .1)}html{font-size:110%}body{margin:0;font-family:var(--font-sans);font-size:var(--font-size-base);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-app);color:var(--text-primary)}code{font-family:var(--font-mono)}.page-container{padding:var(--page-padding);background:var(--bg-app);min-height:100vh}.card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--border-radius-lg);padding:var(--card-padding);box-shadow:var(--shadow-sm);transition:all 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768px){.header-container{flex-direction:column;align-items:stretch}.header-content{flex-direction:column;text-align:center}.header-actions{justify-content:center}.header-button{flex:1}.view-header,.footer-content{padding:var(--spacing-md)}}.empty-state{text-align:center;padding:60px 20px;max-width:500px;margin:0 auto}.empty-state-icon{font-size:48px;margin-bottom:16px;line-height:1}.empty-state-title{font-size:18px;font-weight:600;color:var(--text-primary);margin:0 0 8px}.empty-state-text{font-size:14px;color:var(--text-muted);line-height:1.6;margin:0 0 24px}.empty-state-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.empty-state-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;font-size:14px;font-weight:600;border-radius:var(--radius-md);cursor:pointer;transition:all .2s 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.voice-id{font-family:monospace;font-size:.875rem;background:var(--bg-elevated);padding:.25rem .5rem;border-radius:0}.auto-notice{background:var(--bg-app);border:1px solid var(--accent);border-radius:0;padding:1rem;text-align:center}.auto-notice p{margin:0;color:var(--text-secondary);font-size:.95rem;font-weight:500}.spinner{border:5px solid var(--bg-elevated);border-top:5px solid var(--accent);border-radius:50%;width:60px;height:60px;animation:spin 1s linear infinite;margin-bottom:1rem}.voice-selector.error{background:var(--bg-surface);border:1px solid var(--error)}.voice-selector.error h3{color:var(--error);margin-bottom:1rem}.voice-selector.error p{color:var(--text-secondary);margin-bottom:1rem}.voice-selector.error button{padding:.75rem 1.5rem;background:var(--accent);color:#fff;border:none;border-radius:0;cursor:pointer;font-size:1rem;font-weight:600;transition:background var(--transition-base)}.voice-selector.error button:hover{background:var(--accent-hover)}@media (max-width: 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768px){.mode-options{grid-template-columns:1fr}.result-stats{flex-direction:column;gap:var(--gap-sm)}.export-section{flex-direction:column;text-align:center}}.dta-upload-browser{width:100%;max-width:1200px;margin:0 auto;padding:var(--card-padding)}.browser-header{display:none!important}.error-banner{background-color:#ef44441a;border:1px solid #dc2626;color:#fca5a5;padding:var(--card-padding);border-radius:var(--border-radius-lg);margin-bottom:.75rem;display:flex;justify-content:space-between;align-items:center;font-size:var(--font-size-base)}.error-banner button{background:transparent;border:none;color:#fca5a5;font-size:1rem;cursor:pointer;padding:0 .5rem}.upload-zone{border:2px dashed var(--border-strong);border-radius:var(--border-radius-lg);padding:2rem 1rem;text-align:center;background:var(--bg-surface);transition:all var(--transition-base) 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.5rem;border-radius:.25rem;font-weight:var(--font-weight-semibold);font-size:var(--font-size-sm);background:var(--bg-elevated);color:var(--text-secondary)}.quality-badge{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .5rem;border-radius:.25rem;font-weight:var(--font-weight-semibold);font-size:var(--font-size-sm)}.quality-badge.excellent{background-color:#22c55e33;color:var(--success)}.quality-badge.good{background-color:#eab30833;color:var(--warning)}.quality-badge.needs-processing{background-color:#ef444433;color:var(--error)}.reset-button{background-color:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-strong);padding:var(--card-padding-sm) .75rem;border-radius:var(--border-radius-md);font-size:var(--font-size-base);cursor:pointer;margin-top:.75rem;transition:all var(--transition-base) ease}.reset-button:hover{background-color:var(--border-strong)}.quality-dashboard{background:var(--bg-surface);border:1px solid var(--bg-elevated);border-radius:var(--border-radius-lg);padding:var(--card-padding)}.quality-dashboard h3{color:var(--text-primary);margin:0 0 .75rem;font-size:var(--font-size-md)}.quality-metrics{display:flex;flex-direction:column;gap:var(--gap-sm);margin-bottom:.75rem}.metric{display:flex;align-items:center;gap:var(--gap-sm);font-size:var(--font-size-sm)}.metric-label{min-width:70px;font-weight:var(--font-weight-semibold);color:var(--text-muted)}.metric-bar{flex:1;height:16px;background-color:var(--bg-elevated);border-radius:.25rem;overflow:hidden}.metric-fill{height:100%;transition:width .3s ease}.metric-fill.green{background:var(--success)}.metric-fill.red{background:var(--error)}.metric-fill.yellow{background:var(--warning)}.metric-value{min-width:45px;text-align:right;font-weight:var(--font-weight-semibold);color:var(--text-secondary)}.problems{border-top:1px solid var(--bg-elevated);padding-top:.75rem}.problems h4{color:var(--text-muted);margin:0 0 .5rem;font-size:var(--font-size-base)}.problem-badges{display:flex;flex-wrap:wrap;gap:.375rem}.problem-badge{background-color:#eab3081a;color:var(--warning);padding:.25rem .5rem;border-radius:.25rem;border:1px solid rgba(234,179,8,.3);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}.preview-panel{background:var(--bg-surface);border:1px solid var(--bg-elevated);border-radius:var(--border-radius-lg);padding:var(--card-padding)}.preview-panel h3{color:var(--text-primary);margin:0 0 .75rem;font-size:var(--font-size-md)}.preview-split{display:grid;grid-template-columns:1fr auto 1fr;gap:var(--gap-md);align-items:start}.preview-column{display:flex;flex-direction:column;gap:var(--gap-sm)}.preview-column h4{color:var(--text-muted);margin:0;font-size:var(--font-size-base)}.preview-text{font-size:var(--font-size-base);line-height:1.5;padding:var(--card-padding);background-color:var(--bg-app);border:1px solid var(--bg-elevated);border-radius:var(--border-radius-md);overflow-x:auto;white-space:pre-wrap;word-wrap:break-word;color:var(--text-secondary);min-height:120px}.preview-arrow{font-size:1.5rem;color:var(--success);align-self:center}.processing-options{background:var(--bg-surface);border:1px solid var(--bg-elevated);border-radius:var(--border-radius-lg);padding:var(--card-padding)}.processing-options h3{color:var(--text-primary);margin:0 0 .75rem;font-size:var(--font-size-md)}.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap-md);margin-bottom:.75rem}.option-group{display:flex;flex-direction:column;gap:.375rem}.option-group label{font-weight:var(--font-weight-semibold);color:var(--text-muted);font-size:var(--font-size-base)}.option-select{padding:var(--card-padding-sm);border:1px solid var(--border-strong);border-radius:var(--border-radius-md);font-size:var(--font-size-base);background-color:var(--bg-app);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-base) ease}.option-select:hover{border-color:var(--text-disabled)}.option-select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px #3b82f633}.option-hint{font-size:var(--font-size-sm);color:var(--text-disabled)}.production-section{background:var(--bg-surface);border:1px solid var(--bg-elevated);border-radius:var(--border-radius-lg);padding:var(--card-padding);margin-top:.75rem}.production-section h3{color:var(--text-primary);margin:0 0 .75rem;font-size:var(--font-size-md)}.voice-section-shared{padding:var(--card-padding);background:var(--bg-app);border-radius:var(--border-radius-md);border:1px solid var(--bg-elevated);margin-bottom:.75rem}.voice-section-shared label{display:block;font-weight:var(--font-weight-semibold);color:var(--text-primary);margin-bottom:.5rem;font-size:var(--font-size-base)}.voice-confirmation{background:#22c55e33;color:var(--success);padding:.375rem .75rem;border-radius:.25rem;font-weight:var(--font-weight-semibold);font-size:var(--font-size-base);display:inline-flex;align-items:center;gap:.375rem;margin-top:.5rem}.mode-selector{display:flex;gap:var(--gap-sm);margin-bottom:.75rem;padding:var(--card-padding-sm);background:var(--bg-app);border-radius:var(--border-radius-md);border:1px solid var(--bg-elevated)}.mode-selector button{flex:1;padding:var(--card-padding-sm);background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--border-radius-md);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-base) ease}.mode-selector button:hover{background:var(--border-strong)}.mode-selector button.active{background:var(--accent);color:#fff;border-color:var(--accent-hover)}.production-columns{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap-md);margin-top:.75rem}.production-column{padding:var(--card-padding);background:var(--bg-app);border-radius:var(--border-radius-lg);border:1px solid var(--bg-elevated);transition:all var(--transition-base) ease;color:var(--text-secondary)}.production-column.active{background:var(--bg-surface);border-color:var(--accent)}.production-column.inactive{opacity:.6}.production-column h4{color:var(--text-primary);margin:0 0 .5rem;font-size:var(--font-size-md)}.mode-description{color:var(--text-muted);margin-bottom:.75rem;font-size:var(--font-size-base);line-height:1.4}.btn-generate{width:100%;padding:var(--card-padding-sm);background:var(--accent);color:#fff;border:none;border-radius:var(--border-radius-md);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);cursor:pointer;transition:all var(--transition-base) ease}.btn-generate:hover{background:var(--accent-hover)}.btn-generate:disabled{background:var(--border-strong);cursor:not-allowed}.player-section{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--bg-elevated)}.player-section h4{color:var(--text-primary);margin:0 0 .75rem;font-size:var(--font-size-base)}.setting-group{margin-bottom:.75rem}.setting-group label{display:block;font-weight:var(--font-weight-semibold);color:var(--text-secondary);margin-bottom:.375rem;font-size:var(--font-size-base)}.speed-select{width:100%;padding:var(--card-padding-sm);border:1px solid var(--border-strong);border-radius:var(--border-radius-md);font-size:var(--font-size-base);color:var(--text-secondary);background:var(--bg-app);cursor:pointer;transition:all var(--transition-base) ease}.speed-select:hover{border-color:var(--text-disabled)}.speed-select:focus{outline:none;border-color:var(--accent)}.playback-controls{display:flex;gap:var(--gap-sm);justify-content:center;margin:.75rem 0;padding:var(--card-padding-sm);background:var(--bg-app);border-radius:var(--border-radius-md)}.control-button{width:40px;height:40px;border:1px solid var(--border-strong);background:var(--bg-elevated);border-radius:50%;font-size:1rem;cursor:pointer;transition:all var(--transition-base) ease;display:flex;align-items:center;justify-content:center;color:var(--text-secondary)}.control-button:hover{background:var(--border-strong);border-color:var(--text-disabled)}.control-primary{width:48px;height:48px;font-size:1.25rem;background:var(--accent);border-color:var(--accent-hover)}.control-primary:hover{background:var(--accent-hover)}.control-button:disabled{opacity:.3;cursor:not-allowed;background:var(--bg-elevated)}.chapter-navigation{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--bg-elevated)}.chapter-list{display:flex;flex-direction:column;gap:.375rem;max-height:200px;overflow-y:auto}.chapter-item{display:flex;align-items:center;gap:var(--gap-sm);padding:var(--card-padding-sm);background:var(--bg-app);border:1px solid var(--bg-elevated);border-radius:var(--border-radius-md);cursor:pointer;transition:all var(--transition-base) ease}.chapter-item:hover{background:var(--bg-surface);border-color:var(--border-strong)}.chapter-item.active{background:var(--accent);border-color:var(--accent-hover)}.chapter-title{flex:1;color:var(--text-secondary);font-size:var(--font-size-base)}.chapter-playing{font-size:var(--font-size-sm)}.streaming-progress{margin-bottom:.75rem}.progress-bar-label{display:flex;justify-content:space-between;margin-bottom:.375rem;font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--text-muted)}.progress-bar{height:16px;background:var(--bg-app);border-radius:.25rem;overflow:hidden;border:1px solid var(--bg-elevated)}.progress-bar.clickable{cursor:pointer}.progress-bar.clickable:hover{border-color:var(--accent)}.progress-fill{height:100%;background:var(--accent);transition:width .2s ease}.streaming-status{padding:var(--card-padding-sm);background:var(--bg-app);border-radius:var(--border-radius-md);border:1px solid var(--bg-elevated);font-size:var(--font-size-sm)}.streaming-status p{margin:.25rem 0;color:var(--text-muted)}.format-hints{display:flex;gap:var(--gap-sm);justify-content:center;margin:.5rem 0}.format-hint{padding:.25rem .5rem;border-radius:var(--border-radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-strong)}.format-hint.format-xml{background:#eab3081a;border-color:#eab3084d;color:var(--warning)}.format-hint.format-txt{background:#3b82f61a;border-color:#3b82f64d;color:var(--accent)}.format-hint.format-pdf{background:#ef44441a;border-color:#ef44444d;color:var(--error)}.format-hint.format-html{background:#22c55e1a;border-color:#22c55e4d;color:var(--success)}.format-hint.format-epub{background:#9333ea1a;border-color:#9333ea4d;color:#c084fc}.upload-limits{font-size:var(--font-size-sm);color:var(--text-disabled);margin-top:.5rem}.format-badge{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .5rem;border-radius:.25rem;font-weight:var(--font-weight-semibold);font-size:var(--font-size-sm)}.format-badge.format-xml{background:#eab30833;color:var(--warning)}.format-badge.format-txt{background:#3b82f633;color:var(--accent)}.format-badge.format-pdf{background:#ef444433;color:var(--error)}.format-badge.format-html{background:#22c55e33;color:var(--success)}.format-badge.format-epub{background:#9333ea33;color:#c084fc}.pdf-info-badge{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .5rem;border-radius:.25rem;font-weight:var(--font-weight-semibold);font-size:var(--font-size-sm);background:#9333ea33;color:#c084fc}.pdf-icon{font-size:.875rem}.pdf-pages{font-weight:var(--font-weight-medium)}@media (max-width: 768px){.options-grid,.production-columns{grid-template-columns:1fr}.production-column.inactive{display:none}.preview-split{grid-template-columns:1fr}.preview-arrow{transform:rotate(90deg)}.format-hints{flex-wrap:wrap}}