:root{--bg: #f5f7fa;--surface: #ffffff;--surface-2: #f8fafc;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #0f172a;--text-muted: #64748b;--text-faint: #94a3b8;--brand: #1e40af;--brand-hover: #1d4ed8;--brand-soft: #eff6ff;--ok: #047857;--ok-soft: #ecfdf5;--warn: #b45309;--warn-soft: #fffbeb;--danger: #b91c1c;--danger-soft: #fef2f2;--info: #0369a1;--info-soft: #f0f9ff;--radius: 10px;--shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);--sidebar-w: 236px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:#0f172a;color:#cbd5e1;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar .brand{padding:18px 18px 14px;font-weight:700;font-size:15px;color:#fff;letter-spacing:.2px;border-bottom:1px solid #1e293b}.sidebar .brand small{display:block;font-weight:400;font-size:11px;color:#64748b;margin-top:2px}.sidebar nav{padding:10px 8px;flex:1}.sidebar .nav-group{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#475569;padding:14px 12px 6px;font-weight:600}.sidebar a.nav-item{display:flex;align-items:center;gap:9px;padding:8px 12px;border-radius:7px;color:#cbd5e1;font-size:13.5px;margin-bottom:1px;text-decoration:none}.sidebar a.nav-item:hover{background:#1e293b;color:#fff;text-decoration:none}.sidebar a.nav-item.active{background:var(--brand);color:#fff;font-weight:500}.sidebar .nav-icon{width:16px;text-align:center;opacity:.85;font-size:13px}.sidebar .sidebar-foot{padding:12px 14px;border-top:1px solid #1e293b;font-size:11.5px;color:#64748b}.main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 20px;height:56px;display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:20}.topbar .page-title{font-weight:600;font-size:15px;margin-right:auto}.topbar .user-chip{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}.avatar{width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:600}.menu-btn{display:none;background:none;border:0;font-size:20px;cursor:pointer;color:var(--text)}.content{padding:20px;flex:1;max-width:1500px;width:100%}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card-head{padding:13px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;flex-wrap:wrap}.card-head h3{margin:0;font-size:14px;font-weight:600}.card-head .spacer{margin-left:auto}.card-body{padding:16px}.grid{display:grid;gap:14px}.grid-kpi{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}.kpi{padding:15px 16px}.kpi .label{font-size:11.5px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.kpi .value{font-size:23px;font-weight:650;margin-top:7px;letter-spacing:-.02em}.kpi .sub{font-size:12px;color:var(--text-faint);margin-top:4px}.kpi.accent-ok .value{color:var(--ok)}.kpi.accent-danger .value{color:var(--danger)}.kpi.accent-warn .value{color:var(--warn)}table{width:100%;border-collapse:collapse;font-size:13.5px}th{text-align:left;font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);padding:9px 12px;border-bottom:1px solid var(--border);background:var(--surface-2);white-space:nowrap;position:sticky;top:0}td{padding:9px 12px;border-bottom:1px solid var(--border);vertical-align:middle}tbody tr:last-child td{border-bottom:0}tbody tr:hover{background:var(--surface-2)}.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.table-wrap{overflow-x:auto}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:600;letter-spacing:.02em;white-space:nowrap}.badge.ok{background:var(--ok-soft);color:var(--ok)}.badge.warn{background:var(--warn-soft);color:var(--warn)}.badge.danger{background:var(--danger-soft);color:var(--danger)}.badge.info{background:var(--info-soft);color:var(--info)}.badge.muted{background:#f1f5f9;color:var(--text-muted)}button,.btn{font:inherit;font-size:13px;font-weight:500;padding:7px 14px;border-radius:7px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;gap:6px;text-decoration:none}button:hover:not(:disabled),.btn:hover{background:var(--surface-2);text-decoration:none}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary,button.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover,button.primary:hover:not(:disabled){background:var(--brand-hover);border-color:var(--brand-hover)}button.danger{background:var(--danger);border-color:var(--danger);color:#fff}button.danger:hover:not(:disabled){background:#991b1b}button.sm,.btn.sm{padding:4px 10px;font-size:12px}input,select,textarea{font:inherit;font-size:13.5px;padding:7px 10px;border:1px solid var(--border-strong);border-radius:7px;background:var(--surface);color:var(--text);width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #1e40af1f}label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:5px}.field{margin-bottom:13px}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-bottom:14px}.toolbar .field{margin-bottom:0;min-width:150px}.toolbar .grow{flex:1;min-width:200px}.alert{padding:11px 14px;border-radius:8px;font-size:13px;margin-bottom:14px;border:1px solid}.alert.error{background:var(--danger-soft);color:var(--danger);border-color:#fecaca}.alert.ok{background:var(--ok-soft);color:var(--ok);border-color:#a7f3d0}.alert.warn{background:var(--warn-soft);color:var(--warn);border-color:#fde68a}.alert.info{background:var(--info-soft);color:var(--info);border-color:#bae6fd}.alert ul{margin:6px 0 0;padding-left:18px}.empty{padding:40px 20px;text-align:center;color:var(--text-faint);font-size:13.5px}.muted{color:var(--text-muted)}.faint{color:var(--text-faint)}.small{font-size:12px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px}.right{text-align:right}.nowrap{white-space:nowrap}.flex{display:flex;align-items:center;gap:8px}.flex-between{display:flex;align-items:center;justify-content:space-between;gap:10px}.stack{display:flex;flex-direction:column;gap:14px}.mt{margin-top:14px}.page-head{display:flex;align-items:flex-start;gap:12px;flex-wrap:wrap;margin-bottom:16px}.page-head h2{margin:0;font-size:19px;font-weight:650;letter-spacing:-.01em}.page-head p{margin:3px 0 0;color:var(--text-muted);font-size:13px}.page-head .spacer{margin-left:auto}.bars{display:flex;align-items:stretch;gap:7px;height:170px;padding-top:8px}.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;min-width:0}.bar-stack{flex:1;min-height:0;width:100%;display:flex;align-items:flex-end;justify-content:center;gap:2px}.bar{width:45%;border-radius:3px 3px 0 0;min-height:2px}.bar.sales{background:var(--brand)}.bar.purchases{background:#94a3b8}.bar-label{font-size:10px;color:var(--text-faint);white-space:nowrap}.legend{display:flex;gap:14px;font-size:12px;color:var(--text-muted)}.legend i{width:10px;height:10px;border-radius:2px;display:inline-block;margin-right:5px}.aging-bar{display:flex;height:26px;border-radius:6px;overflow:hidden;background:var(--surface-2)}.aging-seg{display:grid;place-items:center;font-size:10.5px;color:#fff;font-weight:600}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(160deg,#0f172a,#1e293b 55%,#1e3a8a)}.login-card{width:100%;max-width:400px;background:#fff;border-radius:14px;padding:30px;box-shadow:0 20px 45px #0000004d}.login-card h1{margin:0 0 4px;font-size:21px}.login-card .sub{color:var(--text-muted);font-size:13px;margin-bottom:22px}.spinner-wrap{display:grid;place-items:center;min-height:60vh;color:var(--text-muted)}.spinner{width:26px;height:26px;border:3px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.backdrop{display:none}@media (max-width: 900px){.sidebar{position:fixed;left:0;top:0;z-index:40;transform:translate(-100%);transition:transform .2s ease}.sidebar.open{transform:translate(0)}.menu-btn{display:block}.content{padding:14px}.backdrop.show{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;z-index:30}.topbar{padding:0 14px}.topbar .user-name{display:none}}@media (max-width: 560px){.kpi .value{font-size:20px}.page-head h2{font-size:17px}th,td{padding:8px 9px}}