:root{--bg-primary:#f8fafc;--bg-secondary:#f1f5f9;--bg-card:#fff;--bg-card-hover:#fff;--bg-glass:#00000004;--bg-glass-hover:#00000008;--border-subtle:#e2e8f0;--border-accent:#3b82f659;--border-drop:#3b82f699;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--accent-primary:#2563eb;--accent-primary-hover:#1d4ed8;--accent-glow:#2563eb14;--accent-green:#059669;--accent-green-glow:#05966914;--accent-amber:#d97706;--accent-red:#e11d48;--gradient-primary:linear-gradient(135deg, #0f172a 0%, #334155 100%);--gradient-bg:radial-gradient(ellipse at 50% -10%, #2563eb0a 0%, transparent 60%), radial-gradient(ellipse at 10% 80%, #05966905 0%, transparent 40%);--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:18px;--shadow-card:0 1px 3px #00000005, 0 4px 20px #00000008;--shadow-glow:0 0 15px var(--accent-glow);--transition-fast:.12s cubic-bezier(.4, 0, .2, 1);--transition-normal:.2s cubic-bezier(.4, 0, .2, 1);--transition-slow:.35s cubic-bezier(.4, 0, .2, 1);--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6}body:before{content:"";background:var(--gradient-bg);pointer-events:none;z-index:0;position:fixed;inset:0}.page-container{z-index:1;max-width:1080px;margin:0 auto;padding:28px 24px 24px;position:relative}.page-header{text-align:center;margin-bottom:24px}.page-title{background:var(--gradient-primary);-webkit-text-fill-color:transparent;letter-spacing:-.02em;-webkit-background-clip:text;background-clip:text;margin-bottom:4px;font-size:1.6rem;font-weight:700}.page-subtitle{color:var(--text-secondary);font-size:.95rem;font-weight:400}.upload-grid{grid-template-columns:1fr 1fr;gap:16px;margin-bottom:4px;display:grid}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);transition:all var(--transition-normal);padding:20px}.card:hover{border-color:#0000001f;box-shadow:0 4px 24px #0000000d}.card-title{align-items:center;gap:10px;margin-bottom:6px;font-size:1.1rem;font-weight:600;display:flex}.card-title .icon{font-size:1.25rem}.card-desc{color:var(--text-muted);margin-bottom:12px;font-size:.82rem}.drop-zone{border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:all var(--transition-normal);background:#f8fafc;border:1px dashed #cbd5e1;padding:22px 16px;position:relative;overflow:hidden}.drop-zone:before{content:"";background:var(--gradient-primary);opacity:0;transition:opacity var(--transition-normal);position:absolute;inset:0}.drop-zone:hover{border-color:var(--border-accent);background:var(--bg-glass-hover)}.drop-zone.drag-over{border-color:var(--accent-primary);background:#2563eb05;border-style:solid}.drop-zone-content{z-index:1;position:relative}.drop-icon{transition:transform var(--transition-normal);margin-bottom:6px;font-size:1.8rem}.drop-zone:hover .drop-icon,.drop-zone.drag-over .drop-icon{color:var(--accent-primary);transform:translateY(-2px)}.drop-text{color:var(--text-secondary);margin-bottom:4px;font-size:.9rem}.drop-hint{color:var(--text-muted);font-size:.78rem}input[type=file]{display:none}.file-list{flex-direction:column;gap:5px;max-height:120px;margin-top:10px;list-style:none;display:flex;overflow-y:auto}.file-item{background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);justify-content:space-between;align-items:center;padding:6px 10px;font-size:.8rem;animation:.3s ease-out fadeSlideIn;display:flex}.file-item-info{align-items:center;gap:10px;min-width:0;display:flex}.file-item-icon{flex-shrink:0;font-size:1.1rem}.file-item-name{text-overflow:ellipsis;white-space:nowrap;color:var(--text-primary);overflow:hidden}.file-item-size{color:var(--text-muted);flex-shrink:0;margin-left:8px;font-size:.78rem}.file-item-remove{color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:4px;flex-shrink:0;padding:4px 6px;font-size:1.1rem}.file-item-remove:hover{color:var(--accent-red);background:#ef44441a}.action-section{text-align:center;margin-top:20px}.btn-process{color:#fff;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-normal);background:#0f172a;border:1px solid #0f172a;align-items:center;gap:8px;padding:10px 28px;font-size:.88rem;font-weight:500;display:inline-flex;box-shadow:0 1px 2px #0000000d}.btn-process:hover:not(:disabled){background:#1e293b;border-color:#1e293b}.btn-process:active:not(:disabled){transform:scale(.97)}.btn-process:disabled{opacity:.5;cursor:not-allowed}.btn-process.loading{pointer-events:none}.spinner{border:2px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:18px;height:18px;animation:.7s linear infinite spin}.result-section{margin-top:16px;animation:.4s ease-out fadeSlideIn}.result-card{border-radius:var(--radius-md);text-align:center;background:#10b9810f;border:1px solid #10b98133;padding:16px}.result-icon{margin-bottom:12px;font-size:2.5rem}.result-title{color:var(--accent-green);margin-bottom:6px;font-size:1.05rem;font-weight:600}.result-desc{color:var(--text-secondary);margin-bottom:16px;font-size:.85rem}.btn-download{color:#fff;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);box-shadow:0 4px 16px var(--accent-green-glow);background:linear-gradient(135deg,#10b981,#059669);border:none;align-items:center;gap:8px;padding:12px 32px;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.btn-download:hover{box-shadow:0 8px 24px var(--accent-green-glow);transform:translateY(-2px)}.error-card{border-radius:var(--radius-md);background:#ef44440f;border:1px solid #ef444433;margin-top:24px;padding:20px;animation:.4s ease-out fadeSlideIn}.error-card .error-title{color:var(--accent-red);align-items:center;gap:8px;margin-bottom:6px;font-size:.95rem;font-weight:600;display:flex}.error-card .error-message{color:var(--text-secondary);font-size:.85rem}.processing-status{margin-top:24px;animation:.4s ease-out fadeSlideIn}.status-card{border-radius:var(--radius-md);text-align:center;background:#2563eb05;border:1px solid #2563eb1a;padding:24px}.status-icon{margin-bottom:12px;font-size:2rem;animation:1.5s ease-in-out infinite pulse}.status-text{color:var(--text-secondary);font-size:.95rem}.status-dots:after{content:"";animation:1.5s steps(4,end) infinite dots}.page-footer{text-align:center;color:var(--text-muted);margin-top:20px;font-size:.75rem}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes dots{0%{content:""}25%{content:"."}50%{content:".."}75%{content:"..."}to{content:""}}@media (max-width:768px){.upload-grid{grid-template-columns:1fr;gap:12px}.page-container{padding:16px 12px 24px}.page-title{font-size:1.3rem}.card{padding:16px}.drop-zone{padding:16px 12px}.btn-process{justify-content:center;width:100%}}