:root{--bg-color: #0d0d12;--accent-color: #6366f1;--accent-hover: #4f46e5;--secondary-color: #1f1f29;--text-primary: #f8fafc;--text-secondary: #94a3b8;--success-color: #10b981;--glass-bg: rgba(255, 255, 255, .03);--glass-border: rgba(255, 255, 255, .08);font-family:Inter,system-ui,-apple-system,sans-serif}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh;background-color:var(--bg-color);color:var(--text-primary);overflow-x:hidden}#app{width:100%;max-width:1200px;margin:0 auto;padding:2rem;display:flex;flex-direction:column;gap:2rem}header{text-align:center}.logo{font-family:Outfit,sans-serif;font-size:3rem;font-weight:700;letter-spacing:-.05em;margin:0}.logo span{background:linear-gradient(135deg,#6366f1,#a855f7);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.subtitle{color:var(--text-secondary);font-weight:300;margin-top:.5rem}.container{display:flex;flex-direction:column;align-items:center;gap:2rem;width:100%}.workspace{display:flex;gap:1.5rem;width:100%}.thumbnail-sidebar{width:220px;flex-shrink:0;background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;padding:1rem;max-height:80vh;overflow-y:auto;display:flex;flex-direction:column;gap:1rem}.sidebar-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:.5rem;border-bottom:1px solid var(--glass-border)}.sidebar-header h3{margin:0;font-size:.9rem;font-weight:600;color:var(--text-primary)}.page-count{font-size:.8rem;color:var(--text-secondary)}.thumbnail-list{display:flex;flex-direction:column;gap:.75rem}.thumbnail-item{position:relative;aspect-ratio:4 / 3;border-radius:8px;overflow:hidden;cursor:pointer;border:2px solid transparent;transition:all .2s ease;background:var(--secondary-color)}.thumbnail-item:hover{border-color:var(--glass-border);transform:scale(1.02)}.thumbnail-item.active{border-color:var(--accent-color);box-shadow:0 0 12px #6366f14d}.thumbnail-item.processed:after{content:"✓";position:absolute;top:4px;right:4px;width:20px;height:20px;background:var(--success-color);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.7rem;color:#fff}.thumbnail-item img{width:100%;height:100%;object-fit:contain}.thumbnail-item .page-number{position:absolute;bottom:4px;left:4px;background:#000000b3;color:#fff;padding:2px 6px;border-radius:4px;font-size:.7rem}.thumbnail-copy-btn{position:absolute;top:4px;left:4px;width:28px;height:28px;background:#000c;border:1px solid var(--glass-border);border-radius:6px;font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .2s ease;z-index:2}.thumbnail-item:hover .thumbnail-copy-btn{opacity:1}.thumbnail-copy-btn:hover{background:#6366f1e6;border-color:var(--accent-color);transform:scale(1.1)}.editor-shell{flex:1;width:100%;position:relative;display:flex;flex-direction:column;align-items:center;gap:1.5rem}.canvas-container{position:relative;width:100%;aspect-ratio:16 / 9;max-height:70vh;background-color:var(--secondary-color);border-radius:24px;border:2px dashed var(--glass-border);overflow:hidden;display:flex;justify-content:center;align-items:center;transition:all .3s ease;box-shadow:0 10px 30px #0000004d}.canvas-container.drag-over{border-color:var(--accent-color);background-color:#6366f10d;transform:scale(1.01)}#main-canvas{max-width:100%;max-height:100%;cursor:crosshair}.placeholder{position:absolute;text-align:center;pointer-events:none}.placeholder .icon{font-size:4rem;margin-bottom:1rem;opacity:.5}.placeholder p{color:var(--text-secondary);font-size:1.1rem;line-height:1.6}.upload-buttons{display:flex;gap:1rem;margin-top:1.5rem}.btn-upload{padding:.8rem 2rem;background:linear-gradient(135deg,#6366f1,#a855f7);color:#fff;border:none;border-radius:12px;font-weight:600;font-family:inherit;cursor:pointer;pointer-events:auto;transition:all .2s ease}.btn-upload:hover{transform:translateY(-2px);box-shadow:0 4px 15px #6366f166}.btn-upload-secondary{background:var(--glass-bg);border:2px solid var(--accent-color);color:var(--text-primary)}.btn-upload-secondary:hover{background:#6366f11a;box-shadow:0 4px 15px #6366f133}.loader-overlay{position:absolute;inset:0;background:#0d0d12cc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:1rem;z-index:10}.spinner{width:40px;height:40px;border:4px solid var(--glass-border);border-top-color:var(--accent-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.controls-pill{display:flex;align-items:center;gap:1.5rem;padding:1rem 2rem;background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:100px;box-shadow:0 4px 20px #0003}.divider{width:1px;height:32px;background:var(--glass-border);opacity:.5}.tool-selection{display:flex;align-items:center;gap:.75rem}.tool-selection label{font-size:.85rem;color:var(--text-secondary);font-weight:500}.tool-buttons{display:flex;gap:.5rem}.btn-tool{padding:.5rem .75rem;font-size:1.2rem;background:var(--glass-bg);border:2px solid var(--glass-border);border-radius:8px;cursor:pointer;transition:all .2s ease}.btn-tool:hover{background:#ffffff14;transform:scale(1.05)}.btn-tool.active{background:var(--accent-color);border-color:var(--accent-color);transform:scale(1.1);box-shadow:0 2px 8px #6366f14d}.brush-settings{display:flex;align-items:center;gap:1rem}.brush-settings label{font-size:.85rem;color:var(--text-secondary);font-weight:500}input[type=range]{accent-color:var(--accent-color);width:120px}#brush-size-value{font-variant-numeric:tabular-nums;width:3rem;font-size:.85rem;color:var(--text-secondary)}.actions{display:flex;gap:1rem;align-items:center}.action-group{display:flex;gap:.5rem;align-items:center}.btn-icon{padding:.6rem;min-width:40px;font-size:1.2rem;border-radius:8px}button{padding:.8rem 1.5rem;border-radius:12px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s ease;border:none}.btn-primary{background:linear-gradient(135deg,#6366f1,#a855f7);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 15px #6366f166}.btn-secondary{background:var(--glass-bg);color:var(--text-primary);border:1px solid var(--glass-border)}.btn-secondary:hover{background:#ffffff14}.output-actions{display:flex;gap:1rem;animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.btn-success{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.btn-success:hover{transform:translateY(-2px);box-shadow:0 4px 15px #10b98166}.btn-outline{background:transparent;border:2px solid var(--glass-border);color:var(--text-primary)}.btn-outline:hover{border-color:var(--text-secondary)}.status-bar{text-align:center;font-size:.8rem;color:var(--text-secondary);opacity:.6}.hidden{display:none!important}