:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-light:#dbeafe;
  --bg:#f4f5f7;
  --surface:#ffffff;
  --text:#1f2937;
  --text-muted:#6b7280;
  --border:#e5e7eb;
  --success:#16a34a;
  --success-bg:#dcfce7;
  --danger:#dc2626;
  --danger-bg:#fee2e2;
  --warning:#d97706;
  --warning-bg:#fef3c7;
  --radius:10px;
  --shadow:0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  font-size:15px;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);}
button,input,select,textarea{font-family:inherit;font-size:14px;}
a{color:var(--primary);}

/* ---------- Login ---------- */
.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;}
.login-card{width:100%;max-width:380px;background:var(--surface);border-radius:16px;box-shadow:var(--shadow);padding:36px 28px;}
.login-card h1{font-size:22px;text-align:center;margin:0 0 4px;}
.login-card p.sub{text-align:center;color:var(--text-muted);margin:0 0 24px;font-size:13px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:#fff;}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--primary-light);border-color:var(--primary);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border:none;border-radius:8px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff;}
.btn:hover{background:var(--primary-dark);}
.btn.block{width:100%;}
.btn.secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);}
.btn.secondary:hover{background:#f3f4f6;}
.btn.danger{background:var(--danger);}
.btn.danger:hover{background:#b91c1c;}
.btn.ghost{background:transparent;color:var(--primary);padding:6px 10px;}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn.sm{padding:6px 10px;font-size:13px;}
.error-box{background:var(--danger-bg);color:#991b1b;padding:10px 12px;border-radius:8px;font-size:13px;margin-bottom:12px;}

/* ---------- App Shell ---------- */
.shell{display:flex;min-height:100vh;}
.sidebar{width:230px;background:#111827;color:#e5e7eb;display:flex;flex-direction:column;flex-shrink:0;position:fixed;top:0;bottom:0;left:0;transition:transform .2s;z-index:40;}
.sidebar .brand{padding:20px 18px;font-weight:800;font-size:17px;display:flex;align-items:center;gap:8px;border-bottom:1px solid #1f2937;}
.sidebar nav{flex:1;overflow-y:auto;padding:10px;}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:#cbd5e1;text-decoration:none;font-size:14px;margin-bottom:2px;cursor:pointer;}
.sidebar nav a:hover{background:#1f2937;color:#fff;}
.sidebar nav a.active{background:var(--primary);color:#fff;}
.sidebar .userbox{padding:14px 18px;border-top:1px solid #1f2937;font-size:13px;}
.sidebar .userbox .cargo{color:#9ca3af;text-transform:capitalize;font-size:12px;}
.main{margin-left:230px;flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:20;}
.topbar h2{margin:0;font-size:18px;}
.menu-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;}
.content{padding:22px 24px 60px;flex:1;}

@media (max-width: 900px){
  .sidebar{transform:translateX(-100%);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;}
  .menu-toggle{display:block;}
}

/* ---------- Cards / grid ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:20px;}
.card{background:var(--surface);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);}
.card .label{font-size:12px;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em;}
.card .value{font-size:24px;font-weight:800;margin-top:4px;}
.card .value.danger{color:var(--danger);}
.card .value.success{color:var(--success);}
.panel{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px;margin-bottom:18px;}
.panel h3{margin:0 0 14px;font-size:15px;}
.chart-wrap{position:relative;height:280px;}
.grid-2{display:grid;grid-template-columns:1.3fr 1fr;gap:16px;}
@media (max-width:900px){.grid-2{grid-template-columns:1fr;}}

/* ---------- Table ---------- */
table{width:100%;border-collapse:collapse;font-size:13.5px;}
th{text-align:left;color:var(--text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em;padding:8px 10px;border-bottom:2px solid var(--border);}
td{padding:9px 10px;border-bottom:1px solid var(--border);}
tr:hover td{background:#fafafa;}
.table-wrap{overflow-x:auto;}
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;}
.badge.success{background:var(--success-bg);color:#166534;}
.badge.warning{background:var(--warning-bg);color:#92400e;}
.badge.danger{background:var(--danger-bg);color:#991b1b;}
.badge.neutral{background:#e5e7eb;color:#374151;}

/* ---------- Toolbar / filters ---------- */
.toolbar{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap;}
.toolbar .search{flex:1;min-width:180px;}
.toolbar input,.toolbar select{padding:9px 12px;border:1px solid var(--border);border-radius:8px;}

/* ---------- Modal ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(17,24,39,.5);display:flex;align-items:center;justify-content:center;z-index:100;padding:16px;}
.modal{background:#fff;border-radius:14px;max-width:520px;width:100%;max-height:90vh;overflow-y:auto;padding:24px;}
.modal h3{margin-top:0;}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;}

/* ---------- PDV ---------- */
.pdv-layout{display:grid;grid-template-columns:1fr 360px;gap:16px;}
@media (max-width:1000px){.pdv-layout{grid-template-columns:1fr;}}
.scan-box{display:flex;gap:8px;margin-bottom:14px;}
.scan-box input{flex:1;padding:12px 14px;font-size:16px;border:2px solid var(--primary);border-radius:8px;}
.cart-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--border);font-size:13.5px;}
.cart-item .qty{display:flex;align-items:center;gap:6px;}
.cart-item .qty button{width:22px;height:22px;border-radius:5px;border:1px solid var(--border);background:#fff;cursor:pointer;}
.cart-total{display:flex;justify-content:space-between;font-size:20px;font-weight:800;padding:14px 0;border-top:2px solid var(--text);margin-top:10px;}
.pay-methods{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0;}
.pay-methods button{padding:10px;border:1px solid var(--border);border-radius:8px;background:#fff;cursor:pointer;font-weight:600;font-size:13px;}
.pay-methods button.selected{border-color:var(--primary);background:var(--primary-light);color:var(--primary-dark);}

/* ---------- Misc ---------- */
.empty-state{text-align:center;color:var(--text-muted);padding:40px 20px;}
.flex-between{display:flex;justify-content:space-between;align-items:center;}
.muted{color:var(--text-muted);}
.mt-0{margin-top:0;}
.toast-wrap{position:fixed;bottom:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:8px;}
.toast{background:#111827;color:#fff;padding:12px 16px;border-radius:8px;box-shadow:var(--shadow);font-size:13.5px;max-width:320px;}
.toast.error{background:var(--danger);}
.toast.success{background:var(--success);}
.qr-box{display:flex;flex-direction:column;align-items:center;gap:10px;}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px;}
.tabs button{padding:9px 14px;border:none;background:none;cursor:pointer;font-weight:600;color:var(--text-muted);border-bottom:2px solid transparent;}
.tabs button.active{color:var(--primary);border-color:var(--primary);}

/* ---------- Clientes (grade de cartões) ---------- */
.cliente-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;}
.cliente-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px 16px;cursor:pointer;transition:transform .1s, box-shadow .1s;}
.cliente-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.08);}
.cliente-card-top{display:flex;align-items:center;gap:10px;}
.cliente-avatar{width:42px;height:42px;border-radius:50%;color:#fff;font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.cliente-card-info{min-width:0;}
.cliente-nome{font-weight:700;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.cliente-sub{font-size:12.5px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.cliente-card-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:10px;}
.chip{background:#f3f4f6;color:#4b5563;font-size:11px;font-weight:600;padding:3px 8px;border-radius:12px;}
.cliente-card-footer{display:flex;gap:10px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border);}
.cliente-metric{font-size:12px;font-weight:700;color:var(--text-muted);}
.cliente-metric.success{color:var(--success);}