*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f0f2f5;--card: #ffffff;--border: #e2e8f0;--border-hover: #cbd5e1;--text: #1e293b;--text-muted: #64748b;--blue: #3b82f6;--blue-hover: #2563eb;--blue-light: #eff6ff;--green: #16a34a;--green-bg: #f0fdf4;--green-border: #bbf7d0;--red: #dc2626;--red-bg: #fef2f2;--red-border: #fecaca;--orange: #d97706;--orange-bg: #fffbeb;--orange-border: #fde68a;--gray-bg: #f8fafc;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}#root{max-width:1200px;margin:0 auto;padding:24px 16px 48px}.app-header{margin-bottom:28px}.app-header h1{font-size:1.5rem;font-weight:700;color:var(--text)}.app-header p{color:var(--text-muted);font-size:.9rem;margin-top:4px}.upload-section{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}@media(max-width:768px){.upload-section{grid-template-columns:1fr}}.upload-zone{background:var(--card);border:2px dashed var(--border);border-radius:var(--radius);padding:20px;transition:border-color .15s,background .15s;cursor:default}.upload-zone.dragging{border-color:var(--blue);background:var(--blue-light)}.upload-zone-header{display:flex;align-items:center;gap:8px;margin-bottom:12px}.upload-zone-badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.7rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.badge-po{background:#dbeafe;color:#1d4ed8}.badge-invoice{background:#dcfce7;color:#15803d}.badge-do{background:#fef9c3;color:#a16207}.upload-zone-title{font-size:.9rem;font-weight:600;color:var(--text)}.upload-drop-area{border:1px dashed var(--border-hover);border-radius:6px;padding:16px;text-align:center;background:var(--gray-bg);cursor:pointer;transition:border-color .15s}.upload-drop-area:hover{border-color:var(--blue)}.upload-drop-area p{font-size:.8rem;color:var(--text-muted);margin-bottom:8px}.btn-browse{display:inline-block;padding:5px 12px;background:var(--card);border:1px solid var(--border);border-radius:5px;font-size:.8rem;color:var(--blue);cursor:pointer;transition:border-color .15s}.btn-browse:hover{border-color:var(--blue)}.file-list{margin-top:10px;display:flex;flex-direction:column;gap:4px}.file-item{display:flex;align-items:center;justify-content:space-between;padding:5px 8px;background:var(--gray-bg);border:1px solid var(--border);border-radius:5px;font-size:.78rem}.file-item-name{color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:160px}.btn-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:0 2px;font-size:1rem;line-height:1;flex-shrink:0}.btn-remove:hover{color:var(--red)}.action-bar{display:flex;align-items:center;gap:12px;margin-bottom:28px}.btn-compare{padding:10px 24px;background:var(--blue);color:#fff;border:none;border-radius:var(--radius);font-size:.9rem;font-weight:600;cursor:pointer;transition:background .15s;display:flex;align-items:center;gap:8px}.btn-compare:hover:not(:disabled){background:var(--blue-hover)}.btn-compare:disabled{opacity:.5;cursor:not-allowed}.btn-reset{padding:10px 16px;background:var(--card);color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius);font-size:.85rem;cursor:pointer;transition:border-color .15s,color .15s}.btn-reset:hover{border-color:var(--border-hover);color:var(--text)}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-box{background:var(--red-bg);border:1px solid var(--red-border);border-radius:var(--radius);padding:12px 16px;color:var(--red);font-size:.875rem;margin-bottom:20px}.results-section{display:flex;flex-direction:column;gap:20px}.results-title{font-size:1.1rem;font-weight:700;margin-bottom:4px}.po-group{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.po-group-header{padding:14px 18px;background:var(--gray-bg);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;flex-wrap:wrap}.po-group-header h3{font-size:.95rem;font-weight:700}.doc-tag{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:.72rem;font-weight:500;border:1px solid var(--border);background:var(--card);color:var(--text-muted)}.comparison-table-wrap{overflow-x:auto}.comparison-table{width:100%;border-collapse:collapse;font-size:.82rem}.comparison-table th{background:#f8fafc;border-bottom:1px solid var(--border);padding:9px 12px;text-align:left;font-weight:600;color:var(--text-muted);white-space:nowrap}.comparison-table td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top}.comparison-table tr:last-child td{border-bottom:none}.comparison-table tr:hover td{background:#fafbfc}.cell-desc{max-width:200px}.cell-qty{white-space:nowrap;font-variant-numeric:tabular-nums}.qty-mismatch{color:var(--orange);font-weight:600}.qty-match{color:var(--green)}.status-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:999px;font-size:.72rem;font-weight:600;white-space:nowrap}.status-all-match{background:var(--green-bg);color:var(--green);border:1px solid var(--green-border)}.status-qty-mismatch{background:var(--orange-bg);color:var(--orange);border:1px solid var(--orange-border)}.status-missing{background:var(--red-bg);color:var(--red);border:1px solid var(--red-border)}.text-muted{color:var(--text-muted);font-style:italic}.unlinked-section{background:var(--orange-bg);border:1px solid var(--orange-border);border-radius:var(--radius);padding:14px 18px}.unlinked-section h4{font-size:.85rem;font-weight:700;color:var(--orange);margin-bottom:8px}.unlinked-list{list-style:none;display:flex;flex-direction:column;gap:4px}.unlinked-list li{font-size:.82rem;color:var(--text)}