:root {
  --bg: #f4f6fb; --panel: #ffffff; --text: #152238; --muted: #6d7788;
  --dark: #0f172a; --line: #e6e9f2; --accent: #1d4ed8; --accent2: #f59e0b;
  --danger: #dc2626; --success: #16a34a;
}
* { box-sizing: border-box; }
body { margin:0; font-family: Arial, Helvetica, sans-serif; background:var(--bg); color:var(--text); display:flex; min-height:100vh; }
.hidden-app { display:none !important; }
.login-screen { position:fixed; inset:0; background:radial-gradient(circle at top,#1d4ed8 0,#0f172a 45%,#020617 100%); display:grid; place-items:center; padding:20px; z-index:10; }
.login-card { width:100%; max-width:420px; background:white; border-radius:24px; padding:30px; text-align:center; box-shadow:0 30px 80px rgba(0,0,0,.3); }
.login-logo,.logo { background:linear-gradient(135deg,var(--accent),var(--accent2)); display:grid; place-items:center; color:white; font-weight:900; }
.login-logo { width:72px; height:72px; margin:auto; border-radius:22px; font-size:42px; }
.login-card h1 { margin:15px 0 5px; } .login-card p,.login-card small,.powered-login { color:var(--muted); }
.login-card form { display:grid; gap:12px; } .login-card small { display:block; margin-top:14px; }
.powered-login { margin-top:25px; font-size:12px; line-height:1.5; }
.sidebar { width:290px; background:var(--dark); color:white; padding:22px; display:flex; flex-direction:column; gap:18px; }
.brand { display:flex; align-items:center; gap:12px; }
.logo { width:50px; height:50px; font-size:28px; border-radius:16px; }
.brand h1 { margin:0; font-size:21px; } .brand p { margin:4px 0 0; color:#cbd5e1; font-size:13px; }
.user-box,.language-box { background:rgba(255,255,255,.08); padding:12px; border-radius:14px; }
.user-box span,.language-box span { display:block; color:#cbd5e1; font-size:12px; margin-bottom:6px; } .user-box strong { text-transform:capitalize; }
.language-box select {
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.18);
  color: white;
  padding: 9px 10px;
}
.language-box option {
  color: var(--text);
}
nav { display:grid; gap:8px; }
.nav-btn { border:0; background:transparent; color:#dce5f5; padding:11px 14px; text-align:left; border-radius:12px; cursor:pointer; font-size:14px; }
.nav-btn.active,.nav-btn:hover { background:rgba(255,255,255,.12); } .logout { color:#fecaca; }
.powered { margin-top:auto; font-size:12px; color:#cbd5e1; border-top:1px solid rgba(255,255,255,.15); padding-top:16px; line-height:1.6; }
.main { flex:1; padding:24px; overflow:auto; }
.screen { display:none; } .screen.active { display:block; }
.topbar { display:flex; justify-content:space-between; gap:15px; align-items:center; margin-bottom:20px; }
.topbar h2 { margin:0; font-size:28px; } .topbar p { margin:7px 0 0; color:var(--muted); }
.date-box,.panel { background:var(--panel); border:1px solid var(--line); border-radius:18px; }
.date-box { padding:12px 15px; color:var(--muted); }
.sales-grid { display:grid; grid-template-columns:1fr 450px; gap:18px; }
.panel { padding:18px; box-shadow:0 12px 25px rgba(15,23,42,.05); }
.panel-head { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:14px; }
.panel h3 { margin:0 0 14px; }
input,select { width:100%; border:1px solid var(--line); border-radius:12px; padding:12px 13px; font-size:14px; outline:none; background:white; }
input:focus,select:focus { border-color:var(--accent); }
.category-tabs,.row-actions { display:flex; gap:8px; flex-wrap:wrap; }
.category-tabs { margin-bottom:14px; }
.category-tabs button,.ghost { border:1px solid var(--line); background:#fff; padding:8px 12px; border-radius:999px; cursor:pointer; }
.category-tabs button.active { background:var(--accent); color:white; border-color:var(--accent); }
.product-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(155px,1fr)); gap:12px; }
.product-card { border:1px solid var(--line); border-radius:16px; padding:14px; cursor:pointer; transition:.15s; background:#fff; }
.product-card:hover { transform:translateY(-2px); border-color:var(--accent); }
.product-card h4 { margin:0 0 8px; } .product-card p { margin:4px 0; color:var(--muted); font-size:13px; }
.price { color:var(--accent); font-weight:800; } .low-stock { color:var(--danger)!important; font-weight:700; }
.held-sales { display:grid; gap:6px; margin-bottom:10px; }
.held-chip { display:flex; justify-content:space-between; gap:8px; align-items:center; background:#fff7ed; border:1px solid #fed7aa; border-radius:12px; padding:8px; font-size:12px; }
.cart-items { min-height:190px; display:grid; gap:10px; align-content:start; }
.cart-items.empty { place-items:center; color:var(--muted); border:1px dashed var(--line); border-radius:14px; }
.cart-row { display:grid; grid-template-columns:1fr auto; gap:12px; border-bottom:1px solid var(--line); padding-bottom:10px; }
.cart-row strong { display:block; } .cart-row span { color:var(--muted); font-size:13px; }
.qty-controls { display:flex; align-items:center; gap:7px; }
.qty-controls button { border:1px solid var(--line); background:white; border-radius:10px; padding:7px 10px; cursor:pointer; }
.sale-options,.filters { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:12px; }
.sale-options label,.filters label,.file-label { font-size:12px; color:var(--muted); display:grid; gap:5px; }
.totals { border-top:1px solid var(--line); margin-top:18px; padding-top:15px; display:grid; gap:10px; }
.totals div { display:flex; justify-content:space-between; } .grand { font-size:22px; color:var(--accent); }
.checkout,.form button,.login-card button,#backupBtn,#resetDemoBtn { width:100%; border:0; background:var(--accent); color:white; padding:14px; border-radius:14px; margin-top:10px; cursor:pointer; font-weight:800; font-size:15px; }
.danger-btn,#resetDemoBtn { background:var(--danger); }
.two-cols { display:grid; grid-template-columns:390px 1fr; gap:18px; } .report-cols { grid-template-columns:1fr 430px; }
.form { display:grid; gap:12px; align-content:start; } .form.small { max-width:540px; }
.table-wrap { overflow-x:auto; } table { width:100%; border-collapse:collapse; }
th,td { border-bottom:1px solid var(--line); padding:11px; text-align:left; font-size:14px; } th { color:var(--muted); }
.delete,.edit { border:0; border-radius:9px; padding:7px 10px; cursor:pointer; margin-right:5px; }
.delete { background:#fee2e2; color:var(--danger); } .edit { background:#dbeafe; color:var(--accent); }
.cards { display:grid; grid-template-columns:repeat(6,1fr); gap:14px; margin-bottom:18px; }
.stat { background:var(--panel); border:1px solid var(--line); border-radius:18px; padding:18px; }
.stat span { color:var(--muted); } .stat strong { display:block; margin-top:10px; font-size:24px; }
.transaction { border-bottom:1px solid var(--line); padding:12px 0; } .transaction strong { color:var(--accent); }
.mt { margin-top:18px; }
@media (max-width:1200px){ .cards{grid-template-columns:repeat(2,1fr);} .sales-grid,.two-cols,.report-cols{grid-template-columns:1fr;} }
@media (max-width:800px){ body{display:block;} .sidebar{width:100%;} .topbar{align-items:flex-start; flex-direction:column;} .cards,.sale-options,.filters{grid-template-columns:1fr;} }


.product-tools {
  grid-template-columns: 1.5fr 1fr 1fr auto;
  align-items: end;
}

.product-summary-cards {
  grid-template-columns: repeat(4, 1fr);
}

.status-badge {
  display: inline-block;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.status-ok {
  background: #dcfce7;
  color: #166534;
}

.status-low {
  background: #fef3c7;
  color: #92400e;
}

.status-out {
  background: #fee2e2;
  color: #991b1b;
}

.action-stack {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.add-cart {
  background: #dcfce7;
  color: #166534;
  border: 0;
  border-radius: 9px;
  padding: 7px 10px;
  cursor: pointer;
}

@media (max-width: 900px) {
  .product-tools,
  .product-summary-cards {
    grid-template-columns: 1fr;
  }
}


.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .65);
  display: grid;
  place-items: center;
  padding: 18px;
  z-index: 20;
}

.hidden-modal {
  display: none;
}

.modal-card {
  width: 100%;
  max-width: 520px;
  background: white;
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 25px 70px rgba(0,0,0,.35);
}

.modal-card .form button {
  margin-top: 5px;
}


.bottom-brand-logo {
  display: block;
  width: 130px;
  max-width: 100%;
  margin: 14px auto 0;
  border-radius: 10px;
}

.import-btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: white;
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}
.import-btn input {
  display: none;
}
.balance-due {
  color: var(--danger);
  font-weight: 800;
}
.balance-paid {
  color: var(--success);
  font-weight: 800;
}

.po-item-line {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}
.doc-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.scan-panel {
  margin-bottom: 18px;
}
.scan-panel label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
}
.reorder-urgent {
  color: var(--danger);
  font-weight: 800;
}
.doc-status-paid { color: var(--success); font-weight: 800; }
.doc-status-partial { color: #92400e; font-weight: 800; }
.doc-status-unpaid { color: var(--danger); font-weight: 800; }

.expired-badge {
  background: #fee2e2;
  color: #991b1b;
}
.soon-badge {
  background: #fef3c7;
  color: #92400e;
}
.good-badge {
  background: #dcfce7;
  color: #166534;
}
.label-preview {
  min-height: 180px;
  display: grid;
  place-items: center;
  border: 1px dashed var(--line);
  border-radius: 16px;
  color: var(--muted);
}
.print-label {
  width: 190px;
  border: 1px solid #111;
  padding: 10px;
  text-align: center;
  font-family: Arial;
  margin: 6px;
  display: inline-block;
}
.print-label strong {
  display: block;
  font-size: 14px;
}
.print-label .barcode {
  font-family: "Courier New", monospace;
  font-size: 16px;
  letter-spacing: 2px;
  margin-top: 8px;
}

.sync-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 12px;
}
.sync-note {
  color: var(--muted);
  font-size: 13px;
  margin-top: 14px;
}
.server-ok {
  color: var(--success);
  font-weight: 800;
}
.server-error {
  color: var(--danger);
  font-weight: 800;
}
@media (max-width: 800px) {
  .sync-grid {
    grid-template-columns: 1fr;
  }
}

.permission-denied {
  opacity: .45;
  pointer-events: none;
}
.whatsapp-ready {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #86efac;
}

.online-on { color: var(--success); }
.online-off { color: var(--danger); }

.tender-tools {
  display: grid;
  grid-template-columns: repeat(5, minmax(70px, 1fr));
  gap: 8px;
  margin: 10px 0;
}
#paidAmount {
  color: var(--text);
}
#changeDue {
  color: var(--success);
}
.change-line {
  background: #dcfce7;
  border-radius: 6px;
  padding: 6px 8px;
  font-weight: 800;
}
@media (max-width: 800px) {
  .tender-tools {
    grid-template-columns: repeat(2, minmax(110px, 1fr));
  }
}

.setup-status-panel {
  margin: 18px 0;
}
.setup-status-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 10px;
}
.setup-status-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}
.setup-status-item strong {
  display: block;
  color: var(--text);
  margin-bottom: 4px;
}
.setup-status-item small {
  color: var(--muted);
}
.setup-ok {
  border-left: 4px solid var(--success);
}
.setup-warn {
  border-left: 4px solid #f59e0b;
}
.setup-danger {
  border-left: 4px solid var(--danger);
}
@media (max-width: 800px) {
  .setup-status-list {
    grid-template-columns: 1fr;
  }
}