.upload-zone{border:3px dashed var(--border-color);border-radius:16px;padding:50px 30px;text-align:center;cursor:pointer;transition:all .3s ease;background:#fafafa}.upload-zone:hover,.upload-zone.dragover{border-color:var(--primary);background:#eef2ff}.upload-zone .icon{width:64px;height:64px;margin:0 auto 20px;color:var(--primary);opacity:.7}.upload-zone h3{font-size:1.2rem;margin-bottom:8px;color:var(--text-main)}.upload-zone p{color:var(--text-muted);font-size:.95rem}.upload-zone input[type=file]{display:none}.results-area{display:none;margin-top:30px;animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.settings-panel{background:#f9fafb;border:1px solid var(--border-color);border-radius:12px;padding:20px;margin-bottom:25px}.settings-row{display:flex;flex-wrap:wrap;gap:30px;align-items:center}.setting-group{display:flex;align-items:center;gap:12px}.setting-group label{font-size:.9rem;font-weight:600;color:var(--text-main);white-space:nowrap}.format-toggle{display:flex;background:#fff;border:1px solid var(--border-color);border-radius:8px;overflow:hidden}.format-option{padding:10px 20px;font-size:.9rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .2s;border:none;background:transparent}.format-option.active{background:var(--primary);color:#fff}.slider-group{display:flex;align-items:center;gap:10px}.slider-group input[type=range]{width:120px;height:6px;background:#e5e7eb;border-radius:3px;outline:none;-webkit-appearance:none}.slider-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 4px #0000001a}.slider-value{min-width:45px;text-align:center;font-family:SF Mono,monospace;font-size:.85rem;font-weight:600;background:#fff;border:1px solid var(--border-color);padding:4px 8px;border-radius:6px;color:var(--primary)}.settings-spacer{flex:1}.action-buttons{display:flex;gap:12px}.btn-primary{padding:12px 24px;background:var(--primary);color:#fff;font-weight:700;font-size:.95rem;border:none;border-radius:10px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s;box-shadow:0 4px 6px -1px #6366f133}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{padding:12px 20px;background:#fff;color:var(--text-muted);font-size:.9rem;font-weight:600;border:2px solid var(--border-color);border-radius:10px;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:6px}.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}.pages-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}.page-card{background:#fff;border:1px solid var(--border-color);border-radius:12px;overflow:hidden;transition:all .2s}.page-card:hover{box-shadow:0 4px 12px #00000014;transform:translateY(-2px)}.page-preview{background:#f3f4f6;padding:15px;display:flex;justify-content:center;align-items:center;min-height:200px}.page-preview canvas{max-width:100%;max-height:220px;border-radius:4px;box-shadow:0 2px 8px #0000001a}.page-info{padding:12px 15px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-color)}.page-number{font-weight:600;color:var(--text-main);font-size:.9rem}.btn-download-page{padding:8px 14px;background:#eef2ff;color:var(--primary);font-size:.8rem;font-weight:600;border:none;border-radius:6px;cursor:pointer;transition:all .2s}.btn-download-page:hover{background:var(--primary);color:#fff}.loading-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:1000;align-items:center;justify-content:center}.loading-overlay.active{display:flex}.loading-box{background:#fff;padding:40px 50px;border-radius:16px;text-align:center;box-shadow:0 20px 40px #0003}.loading-spinner{width:50px;height:50px;border:4px solid #E5E7EB;border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-weight:600;color:var(--text-main)}[data-theme=dark] .upload-zone{background:#1f2937;border-color:#374151}[data-theme=dark] .upload-zone:hover{background:#1e3a5f}[data-theme=dark] .settings-panel{background:#1f2937;border-color:#374151}[data-theme=dark] .format-toggle{background:#111827;border-color:#374151}[data-theme=dark] .format-option{color:#9ca3af}[data-theme=dark] .page-card{background:#1f2937;border-color:#374151}[data-theme=dark] .page-preview{background:#111827}[data-theme=dark] .page-info{border-color:#374151}[data-theme=dark] .btn-secondary{background:#1f2937;border-color:#374151}[data-theme=dark] .slider-value{background:#111827;border-color:#374151}[data-theme=dark] .loading-box{background:#1f2937}.seo-article ul,.seo-article ol{padding-left:1.5rem}@media(max-width:768px){.settings-row{flex-direction:column;align-items:flex-start;gap:15px}.settings-spacer{display:none}.action-buttons{width:100%;flex-direction:column}.btn-primary,.btn-secondary{width:100%;justify-content:center}}:root{--content-width: 900px}