*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f8f7f4;--bg2: #ffffff;--border: #e5e3dc;--border2: #d0cec6;--text: #1c1b18;--text2: #5a5955;--text3: #9a9890;--accent: #1d4ed8;--accent-bg: #eff6ff;--success: #15803d;--success-bg: #f0fdf4;--warning: #b45309;--warning-bg: #fffbeb;--danger: #b91c1c;--danger-bg: #fef2f2;--radius: 8px;--radius-lg: 12px;--shadow: 0 1px 3px rgba(0,0,0,.06)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:14px;line-height:1.5;color:var(--text);background:var(--bg)}.app-shell{display:flex;height:100vh;overflow:hidden}.sidebar{width:220px;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.main-content{flex:1;overflow-y:auto;display:flex;flex-direction:column}.topbar{background:var(--bg2);border-bottom:1px solid var(--border);padding:12px 24px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.page-content{padding:24px;flex:1}.sidebar-logo{padding:20px 16px 16px;border-bottom:1px solid var(--border)}.sidebar-logo h1{font-size:15px;font-weight:600;color:var(--text)}.sidebar-logo p{font-size:11px;color:var(--text3);margin-top:2px}.nav-section{font-size:10px;font-weight:600;color:var(--text3);letter-spacing:.08em;text-transform:uppercase;padding:16px 16px 4px}.nav-item{display:flex;align-items:center;gap:8px;padding:7px 16px;font-size:13px;color:var(--text2);cursor:pointer;border-left:2px solid transparent;transition:all .15s;text-decoration:none}.nav-item:hover{background:var(--bg);color:var(--text)}.nav-item.active{color:var(--accent);font-weight:500;border-left-color:var(--accent);background:var(--accent-bg)}.nav-icon{width:16px;text-align:center;font-size:14px}.card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px}.card-sm{padding:14px 16px}.card-title{font-size:13px;font-weight:500;color:var(--text);margin-bottom:14px}.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:20px}.kpi-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.kpi-label{font-size:12px;color:var(--text3);margin-bottom:6px}.kpi-value{font-size:22px;font-weight:600;color:var(--text);line-height:1}.kpi-delta{font-size:11px;margin-top:4px}.delta-up{color:var(--danger)}.delta-ok{color:var(--success)}.delta-neutral{color:var(--text3)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}thead th{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border);font-size:11px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}tbody td{padding:10px 12px;border-bottom:1px solid var(--border);color:var(--text)}tbody tr:last-child td{border-bottom:none}tbody tr:hover td{background:var(--bg)}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:500}.badge-success{background:var(--success-bg);color:var(--success)}.badge-danger{background:var(--danger-bg);color:var(--danger)}.badge-warning{background:var(--warning-bg);color:var(--warning)}.badge-neutral{background:var(--bg);color:var(--text2);border:1px solid var(--border)}.badge-accent{background:var(--accent-bg);color:var(--accent)}.mejor-precio{background:var(--success-bg);color:var(--success);font-weight:600;padding:2px 8px;border-radius:4px}.peor-precio{color:var(--danger)}.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius);font-size:13px;font-weight:500;cursor:pointer;border:1px solid transparent;transition:all .15s}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:#1e40af}.btn-secondary{background:var(--bg2);color:var(--text);border-color:var(--border2)}.btn-secondary:hover{background:var(--bg)}.btn-danger{background:var(--danger-bg);color:var(--danger);border-color:#fecaca}.btn-sm{padding:5px 10px;font-size:12px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:500;color:var(--text2);margin-bottom:5px}.form-input{width:100%;padding:8px 10px;border:1px solid var(--border2);border-radius:var(--radius);font-size:13px;color:var(--text);background:var(--bg2);transition:border-color .15s}.form-input:focus{outline:none;border-color:var(--accent)}.form-select{width:100%;padding:8px 10px;border:1px solid var(--border2);border-radius:var(--radius);font-size:13px;color:var(--text);background:var(--bg2)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}.modal{background:var(--bg2);border-radius:var(--radius-lg);border:1px solid var(--border);width:100%;max-width:480px;max-height:90vh;overflow-y:auto}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.modal-title{font-size:14px;font-weight:600}.modal-body{padding:20px}.modal-footer{padding:14px 20px;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end}.alert{padding:10px 14px;border-radius:var(--radius);font-size:13px;margin-bottom:16px}.alert-success{background:var(--success-bg);color:var(--success);border:1px solid #bbf7d0}.alert-danger{background:var(--danger-bg);color:var(--danger);border:1px solid #fecaca}.alert-warning{background:var(--warning-bg);color:var(--warning);border:1px solid #fde68a}.filters{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center}.filter-select{padding:6px 10px;border:1px solid var(--border2);border-radius:var(--radius);font-size:13px;color:var(--text);background:var(--bg2)}.upload-zone{border:2px dashed var(--border2);border-radius:var(--radius-lg);padding:40px 20px;text-align:center;cursor:pointer;transition:all .2s}.upload-zone:hover,.upload-zone.dragging{border-color:var(--accent);background:var(--accent-bg)}.upload-zone-icon{font-size:32px;margin-bottom:10px}.upload-zone-title{font-size:15px;font-weight:500;margin-bottom:4px}.upload-zone-sub{font-size:12px;color:var(--text3)}@media (max-width: 768px){.sidebar{display:none}.kpi-grid{grid-template-columns:repeat(2,1fr)}}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.text-sm{font-size:12px}.text-muted{color:var(--text3)}.font-medium{font-weight:500}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}