:root{
  --navy:#14213D; --navy-light:#1E2E52; --paper:#FAF7F0; --card:#FFFFFF;
  --ink:#1F2430; --muted:#6B7280; --border:#E7E2D6;
  --green:#0E9B6B; --green-dark:#0B7D57; --amber:#F0A202; --red:#D64545; --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Inter',sans-serif;background:var(--paper);color:var(--ink);display:flex;min-height:100vh;}
h1,h2,h3,.brand,.stat-num{font-family:'Sora',sans-serif;}
.mono{font-family:'JetBrains Mono',monospace;}
svg.i{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;display:block;}
a{color:inherit;text-decoration:none;}

.sidebar{width:250px;background:var(--navy);color:#DDE3F0;flex-shrink:0;display:flex;flex-direction:column;padding:22px 14px;position:sticky;top:0;height:100vh;overflow-y:auto;}
.brand{color:#fff;font-weight:800;font-size:20px;display:flex;align-items:center;gap:10px;padding:0 8px 22px 8px;}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(14,155,107,.25);}
.nav-group-label{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#7C88AC;margin:16px 10px 6px;}
.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:8px;font-size:14px;font-weight:500;color:#C4CDE6;cursor:pointer;transition:background .15s,color .15s;}
.nav-item:hover{background:var(--navy-light);color:#fff;}
.nav-item.active{background:var(--green);color:#fff;}
.nav-item .ic{width:18px;display:flex;align-items:center;justify-content:center;}
.sidebar-foot{margin-top:auto;padding:14px 10px 0;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#7C88AC;}

.main{flex:1;min-width:0;}
.topbar{background:var(--card);border-bottom:1px solid var(--border);padding:14px 26px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:5;}
.topbar .title{font-size:18px;font-weight:700;}
.topbar .sub{font-size:12px;color:var(--muted);margin-top:2px;}
.topbar-right{display:flex;align-items:center;gap:14px;}
.store-pill{background:var(--paper);border:1px solid var(--border);border-radius:20px;padding:6px 14px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px;}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;}
.content{padding:26px;}

.grid-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px;}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;}
.stat-label{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;}
.stat-num{font-size:26px;font-weight:700;margin-top:6px;}
.stat-delta{font-size:12px;margin-top:6px;font-weight:600;}
.up{color:var(--green-dark);} .down{color:var(--red);}
.two-col{display:grid;grid-template-columns:2fr 1fr;gap:18px;}
.card h3{font-size:15px;margin-bottom:14px;}
.bar-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:13px;}
.bar-track{flex:1;height:8px;background:var(--paper);border-radius:6px;overflow:hidden;}
.bar-fill{height:100%;background:var(--green);border-radius:6px;}
.bar-label{width:110px;color:var(--muted);}
.bar-val{width:60px;text-align:right;font-weight:600;}

table{width:100%;border-collapse:collapse;font-size:13px;}
th{text-align:left;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.03em;padding:8px 6px;border-bottom:1px solid var(--border);}
td{padding:10px 6px;border-bottom:1px solid var(--border);}
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:12px;}
.badge.paid{background:#E3F6EE;color:var(--green-dark);}
.badge.pending{background:#FDF1DA;color:#9C6B00;}

.pos-wrap{display:grid;grid-template-columns:1fr 340px;gap:18px;align-items:start;}
.cat-tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap;}
.cat-tab{padding:7px 16px;border-radius:20px;background:var(--card);border:1px solid var(--border);font-size:13px;font-weight:600;cursor:pointer;}
.cat-tab.active{background:var(--navy);color:#fff;border-color:var(--navy);}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.product-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;cursor:pointer;transition:transform .12s,box-shadow .12s;}
.product-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(20,33,61,.08);border-color:var(--green);}
.product-swatch{height:56px;border-radius:8px;margin-bottom:10px;display:flex;align-items:center;justify-content:center;background:#E3F6EE;color:#0B7D57;}
.product-swatch svg.i{width:22px;height:22px;}
.product-name{font-size:13px;font-weight:600;}
.product-price{font-size:13px;color:var(--green-dark);font-weight:700;margin-top:4px;}
.product-stock{font-size:11px;color:var(--muted);margin-top:2px;}

.cart-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;position:sticky;top:80px;max-height:calc(100vh - 100px);overflow-y:auto;}
.cart-item{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px dashed var(--border);font-size:13px;gap:6px;}
.cart-item .name{flex:1;}
.qty-ctrl{display:flex;align-items:center;gap:6px;}
.qty-ctrl button{width:20px;height:20px;border:1px solid var(--border);background:var(--paper);border-radius:5px;cursor:pointer;font-weight:700;}
.cart-empty{color:var(--muted);font-size:13px;text-align:center;padding:30px 0;}
.cart-totals div{display:flex;justify-content:space-between;font-size:13px;padding:6px 0;}
.cart-totals .grand{font-size:17px;font-weight:800;border-top:1px solid var(--border);margin-top:6px;padding-top:10px;}
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;text-align:center;padding:12px;border-radius:8px;font-weight:700;font-size:14px;border:none;cursor:pointer;margin-top:10px;}
.btn-primary{background:var(--green);color:#fff;}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--ink);}
.btn-sm{padding:9px 16px;font-size:13px;border-radius:7px;font-weight:700;border:none;cursor:pointer;}
.btn-danger{background:#FDE2E2;color:var(--red);}

.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.module-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;}
.module-head{display:flex;justify-content:space-between;align-items:flex-start;}
.module-ic{width:38px;height:38px;border-radius:9px;display:flex;align-items:center;justify-content:center;background:var(--paper);color:var(--navy);}
.module-name{font-weight:700;font-size:14px;margin-top:10px;}
.module-desc{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.5;flex:1;}
.module-meta{font-size:11px;color:var(--muted);margin-top:10px;display:flex;justify-content:space-between;align-items:center;}
.module-actions{margin-top:12px;display:flex;gap:8px;}
.toggle{width:36px;height:20px;background:var(--border);border-radius:20px;position:relative;flex-shrink:0;border:none;cursor:pointer;padding:0;}
.toggle.on{background:var(--green);}
.toggle::after{content:'';width:16px;height:16px;background:#fff;border-radius:50%;position:absolute;top:2px;left:2px;transition:.15s;}
.toggle.on::after{left:18px;}
.install-banner{background:var(--navy);color:#fff;border-radius:var(--radius);padding:18px 22px;display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;}
.install-banner p{font-size:13px;color:#B9C3E0;margin-top:4px;}

.invoice-wrap{display:grid;grid-template-columns:1fr 320px;gap:20px;align-items:start;}
.field-row{margin-bottom:16px;}
.field-row label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.03em;}
.field-row input,.field-row select,.field-row textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;font-family:inherit;background:var(--paper);}
.field-two{display:grid;grid-template-columns:1fr 1fr;gap:14px;}

.receipt-outer{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:sticky;top:80px;}
.receipt-outer>p.tag{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-weight:700;margin-bottom:12px;}
.receipt{background:#fff;width:100%;font-family:'JetBrains Mono',monospace;font-size:11.5px;color:#222;padding:18px 16px 22px;position:relative;box-shadow:0 3px 10px rgba(0,0,0,.08);}
.r-center{text-align:center;}
.r-logo{font-weight:700;font-size:14px;letter-spacing:.03em;}
.r-line{border-top:1px dashed #999;margin:8px 0;}
.r-row{display:flex;justify-content:space-between;}
.r-total-row{display:flex;justify-content:space-between;font-weight:700;font-size:13px;margin-top:6px;}
.r-barcode{margin-top:12px;display:flex;justify-content:center;gap:1.5px;}
.r-barcode span{width:2px;background:#222;}

.form-card{max-width:520px;}
.alert{padding:12px 16px;border-radius:8px;font-size:13px;margin-bottom:16px;}
.alert-success{background:#E3F6EE;color:var(--green-dark);}
.alert-error{background:#FDE2E2;color:var(--red);}
.placeholder-card{background:var(--card);border:1px dashed var(--border);border-radius:var(--radius);padding:40px;text-align:center;color:var(--muted);}

/* --- Login page --- */
.login-wrap{min-height:100vh;width:100%;display:flex;align-items:center;justify-content:center;background:var(--navy);}
.login-card{background:var(--card);border-radius:14px;padding:36px;width:360px;box-shadow:0 20px 50px rgba(0,0,0,.25);}
.login-card .brand{color:var(--ink);padding:0 0 24px 0;}
.login-card input{width:100%;padding:11px 13px;border:1px solid var(--border);border-radius:8px;font-size:13px;margin-bottom:14px;}
.login-card label{font-size:12px;font-weight:600;color:var(--muted);display:block;margin-bottom:6px;}

@media (max-width:960px){
  .grid-stats{grid-template-columns:repeat(2,1fr);}
  .two-col,.pos-wrap,.invoice-wrap,.module-grid{grid-template-columns:1fr;}
  .product-grid{grid-template-columns:repeat(2,1fr);}
}

/* --- Installer wizard --- */
.install-body{background:var(--paper);min-height:100vh;padding:40px 20px;}
.installer-wrap{max-width:640px;margin:0 auto;}
.installer-wrap .brand{color:var(--ink);justify-content:center;margin-bottom:24px;}
.steps{display:flex;align-items:center;margin-bottom:30px;}
.step{display:flex;flex-direction:column;align-items:center;flex:1;position:relative;}
.step .circle{width:30px;height:30px;border-radius:50%;background:var(--border);color:var(--muted);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;z-index:1;}
.step.done .circle{background:var(--green);color:#fff;}
.step.current .circle{background:var(--navy);color:#fff;}
.step .lbl{font-size:11px;margin-top:6px;color:var(--muted);font-weight:600;text-align:center;}
.step::after{content:'';position:absolute;top:15px;left:50%;width:100%;height:2px;background:var(--border);z-index:0;}
.step:last-child::after{display:none;}
.step.done::after{background:var(--green);}
.installer-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;}
.installer-card h3{margin-bottom:6px;}
.installer-card p.desc{font-size:13px;color:var(--muted);margin-bottom:20px;}
.req-row{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px solid var(--border);font-size:13px;}
.req-ok{color:var(--green-dark);font-weight:700;font-size:12px;display:flex;align-items:center;gap:5px;}
.req-fail{color:var(--red);font-weight:700;font-size:12px;display:flex;align-items:center;gap:5px;}
.installer-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;}