*{box-sizing:border-box;margin:0;padding:0}body{width:100vw;height:100vh;font-family:Segoe UI,system-ui,-apple-system,sans-serif;overflow:hidden}#root{flex-direction:column;width:100vw;height:100vh;display:flex}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#888;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#666}.app{flex-direction:column;width:100vw;height:100vh;transition:background .3s,color .3s;display:flex;overflow:hidden}.app.light{--bg-primary:#fff;--bg-secondary:#f5f5f5;--bg-tertiary:#e8e8e8;--bg-hover:#efefef;--text-primary:#1a1a1a;--text-secondary:#555;--text-muted:#888;--border:#ddd;--accent:#4f46e5;--accent-hover:#4338ca;--accent-light:#eef2ff;--shadow:#0000001a;--toolbar-bg:#fff;--sidebar-bg:#f8f8f8;--panel-bg:#fff;--canvas-bg:#e5e5e5;--danger:#ef4444;--danger-hover:#dc2626;--success:#22c55e;--warning:#f59e0b;background:var(--bg-primary);color:var(--text-primary)}.app.dark{--bg-primary:#1a1a2e;--bg-secondary:#16213e;--bg-tertiary:#0f3460;--bg-hover:#1e2a4a;--text-primary:#e0e0e0;--text-secondary:#aaa;--text-muted:#777;--border:#2a2a4a;--accent:#818cf8;--accent-hover:#6366f1;--accent-light:#1e1b4b;--shadow:#0000004d;--toolbar-bg:#1a1a2e;--sidebar-bg:#16213e;--panel-bg:#1a1a2e;--canvas-bg:#0a0a1a;--danger:#f87171;--danger-hover:#ef4444;--success:#4ade80;--warning:#fbbf24;background:var(--bg-primary);color:var(--text-primary)}.main-content{flex:1;display:flex;position:relative;overflow:hidden}.viewer-area{background:var(--canvas-bg);flex:1;justify-content:center;padding:20px;display:flex;overflow:auto}.toolbar{background:var(--toolbar-bg);border-bottom:1px solid var(--border);box-shadow:0 2px 4px var(--shadow);z-index:10;flex-wrap:wrap;flex-shrink:0;align-items:center;gap:8px;padding:8px 16px;display:flex}.toolbar-group{align-items:center;gap:4px;display:flex}.toolbar-separator{background:var(--border);width:1px;height:24px;margin:0 4px}.toolbar-btn{width:36px;height:36px;color:var(--text-primary);cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;font-size:18px;transition:background .2s;display:flex}.toolbar-btn:hover{background:var(--bg-hover)}.toolbar-btn.active{background:var(--accent-light);color:var(--accent)}.toolbar-btn.tts-btn{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:20px;gap:6px;width:auto;padding:0 14px;font-size:13px;font-weight:600;transition:all .2s;animation:2s ease-in-out infinite tts-glow;box-shadow:0 2px 8px #6366f159}.toolbar-btn.tts-btn:hover{background:linear-gradient(135deg,#4f46e5,#7c3aed);transform:scale(1.05);box-shadow:0 4px 16px #6366f180}.tts-btn-label{letter-spacing:.3px;font-size:13px}@keyframes tts-glow{0%,to{box-shadow:0 2px 8px #6366f159}50%{box-shadow:0 2px 16px #6366f18c}}.toolbar-btn svg{width:20px;height:20px}.page-input{text-align:center;border:1px solid var(--border);background:var(--bg-secondary);width:50px;color:var(--text-primary);border-radius:6px;outline:none;padding:4px 6px;font-size:14px}.page-input:focus{border-color:var(--accent)}.page-info{color:var(--text-secondary);white-space:nowrap;font-size:14px}.toolbar-spacer{flex:1}.sidebar{background:var(--sidebar-bg);border-right:1px solid var(--border);flex-direction:column;width:240px;min-width:240px;display:flex;overflow:hidden}.sidebar-tabs{border-bottom:1px solid var(--border);display:flex}.sidebar-tab{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;flex:1;padding:10px;font-size:13px;font-weight:500;transition:all .2s}.sidebar-tab.active{color:var(--accent);border-bottom:2px solid var(--accent);background:var(--bg-hover)}.sidebar-content{flex:1;padding:8px;overflow-y:auto}.thumbnail-item{cursor:pointer;text-align:center;border:2px solid #0000;border-radius:8px;margin-bottom:4px;padding:8px;transition:background .2s}.thumbnail-item:hover{background:var(--bg-hover)}.thumbnail-item.active{border-color:var(--accent);background:var(--accent-light)}.thumbnail-item canvas{width:100%;box-shadow:0 1px 3px var(--shadow);border-radius:4px}.thumbnail-label{color:var(--text-muted);margin-top:4px;font-size:12px}.bookmark-item{cursor:pointer;border-radius:8px;justify-content:space-between;align-items:center;margin-bottom:4px;padding:10px 12px;transition:background .2s;display:flex}.bookmark-item:hover{background:var(--bg-hover)}.bookmark-label{color:var(--text-primary);font-size:14px}.bookmark-delete{color:var(--danger);cursor:pointer;opacity:0;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:16px;transition:opacity .2s}.bookmark-item:hover .bookmark-delete{opacity:1}.empty-state{text-align:center;color:var(--text-muted);padding:24px 16px;font-size:14px}.upload-screen{background:var(--canvas-bg);flex-direction:column;justify-content:center;align-items:center;gap:32px;height:100vh;display:flex}.upload-header{text-align:center}.upload-header h1{color:var(--text-primary);margin-bottom:8px;font-size:36px;font-weight:700}.upload-header p{color:var(--text-secondary);font-size:16px}.upload-zone{border:3px dashed var(--border);text-align:center;cursor:pointer;background:var(--panel-bg);border-radius:16px;width:480px;max-width:90vw;padding:60px 40px;transition:all .3s}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent);background:var(--accent-light)}.upload-icon{color:var(--accent);margin-bottom:16px;font-size:48px}.upload-zone h3{color:var(--text-primary);margin-bottom:8px;font-size:18px}.upload-zone p{color:var(--text-muted);font-size:14px}.upload-dark-toggle{position:absolute;top:16px;right:16px}.panel{background:var(--panel-bg);border-left:1px solid var(--border);flex-direction:column;width:360px;min-width:360px;display:flex;overflow:hidden}.panel-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 16px;font-size:15px;font-weight:600;display:flex}.panel-close{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px 8px;font-size:20px;transition:background .2s}.panel-close:hover{background:var(--bg-hover)}.panel-body{flex:1;padding:16px;overflow-y:auto}.panel-actions{border-top:1px solid var(--border);gap:8px;padding:12px 16px;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;transition:all .2s;display:flex}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background:var(--bg-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-hover)}.btn-full{justify-content:center;width:100%}.ocr-status{text-align:center;padding:24px}.ocr-progress{background:var(--bg-tertiary);border-radius:4px;width:100%;height:8px;margin:12px 0;overflow:hidden}.ocr-progress-bar{background:var(--accent);border-radius:4px;height:100%;transition:width .3s}.ocr-text{white-space:pre-wrap;word-wrap:break-word;color:var(--text-primary);background:var(--bg-secondary);border-radius:8px;min-height:200px;max-height:calc(100vh - 300px);padding:16px;font-family:Noto Sans Devanagari,Mangal,Segoe UI,sans-serif;font-size:16px;line-height:1.8;overflow-y:auto}.tts-controls{flex-direction:column;gap:16px;display:flex}.tts-control-row{align-items:center;gap:12px;display:flex}.tts-control-row label{color:var(--text-secondary);min-width:60px;font-size:13px;font-weight:500}.tts-control-row input[type=range]{accent-color:var(--accent);flex:1}.tts-control-row span{color:var(--text-muted);text-align:right;min-width:30px;font-size:13px}.tts-play-controls{justify-content:center;gap:8px;padding:16px 0;display:flex}.tts-play-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;font-size:20px;transition:all .2s;display:flex}.tts-play-btn:hover{background:var(--accent-hover);transform:scale(1.05)}.tts-play-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.tts-text-preview{color:var(--text-secondary);background:var(--bg-secondary);border-radius:8px;max-height:200px;padding:12px;font-family:Noto Sans Devanagari,Mangal,Segoe UI,sans-serif;font-size:14px;line-height:1.8;overflow-y:auto}.tts-no-text{text-align:center;color:var(--text-muted);padding:32px 16px;font-size:14px}.tts-quality-warning{border:1px solid var(--warning);color:var(--warning);background:#f59e0b1f;border-radius:10px;gap:12px;padding:14px;font-size:13px;line-height:1.5;display:flex}.tts-quality-warning strong{color:var(--text-primary);margin-bottom:4px;display:block}.tts-quality-warning p{color:var(--text-secondary)}.tts-ocr-badge{border:1px solid var(--success);color:var(--success);text-align:center;background:#22c55e1f;border-radius:8px;padding:8px 12px;font-size:13px}.auto-ocr-bar{z-index:15;background:var(--panel-bg);border:1px solid var(--border);box-shadow:0 2px 12px var(--shadow);border-radius:10px;min-width:240px;padding:8px 16px;font-size:13px;position:absolute;top:8px;left:50%;transform:translate(-50%)}.auto-ocr-bar-inner{color:var(--text-secondary);align-items:center;gap:8px;margin-bottom:6px;display:flex}.auto-ocr-spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;flex-shrink:0;width:14px;height:14px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.auto-ocr-progress{background:var(--bg-tertiary);border-radius:2px;width:100%;height:4px;overflow:hidden}.auto-ocr-progress-fill{background:var(--accent);border-radius:2px;height:100%;transition:width .3s}.auto-ocr-done{z-index:15;border:1px solid var(--success);color:var(--success);background:#22c55e1f;border-radius:8px;padding:6px 16px;font-size:13px;font-weight:500;animation:3s 2s forwards fadeOut;position:absolute;top:8px;left:50%;transform:translate(-50%)}@keyframes fadeOut{0%{opacity:1}to{opacity:0;pointer-events:none}}.ocr-loading-spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:32px;height:32px;margin:0 auto;animation:.8s linear infinite spin}.pdf-canvas-wrapper{flex-direction:column;align-items:center;gap:12px;display:flex}.pdf-canvas-wrapper canvas{box-shadow:0 4px 20px var(--shadow);border-radius:4px}.pdf-loading{height:400px;color:var(--text-muted);justify-content:center;align-items:center;font-size:16px;display:flex}.pdf-error{color:var(--danger);text-align:center;padding:32px}@media (width<=768px){.sidebar{z-index:20;box-shadow:4px 0 16px var(--shadow);position:absolute;top:0;bottom:0;left:0}.panel{z-index:20;width:100%;min-width:unset;box-shadow:-4px 0 16px var(--shadow);position:absolute;top:0;bottom:0;right:0}.toolbar{gap:4px;padding:6px 8px}.toolbar-btn{width:32px;height:32px;font-size:16px}}