/* ============ MASTER POS — Styles ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #f1f5f9; --panel: #fff; --border: #e2e8f0;
  --text: #0f172a; --muted: #64748b;
  --primary: #4f46e5; --primary-dark: #4338ca; --primary-soft: #eef2ff;
  --green: #059669; --green-soft: #ecfdf5;
  --amber: #d97706; --amber-soft: #fffbeb;
  --red: #dc2626; --red-soft: #fef2f2;
  --sidebar-bg: #0f172a; --sidebar-text: #cbd5e1; --sidebar-active: #4f46e5;
  --radius: 12px; --shadow: 0 1px 3px rgba(15,23,42,.08), 0 4px 16px rgba(15,23,42,.05);
}
html { -webkit-text-size-adjust: 100%; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 14px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
h1 { font-size: 20px; } h2 { font-size: 18px; } h3 { font-size: 15px; margin-bottom: 10px; }
hr { border: none; border-top: 1px solid var(--border); margin: 14px 0; }
a { color: var(--primary); cursor: pointer; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 16px; border: 1px solid transparent; border-radius: 8px; font-size: 14px; font-weight: 600; transition: .15s; white-space: nowrap; }
.btn-primary { background: var(--primary); color: #fff; } .btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: #fff; border-color: var(--border); color: var(--text); } .btn-ghost:hover { background: var(--bg); }
.btn-danger { background: var(--red); color: #fff; } .btn-danger:hover { background: #b91c1c; }
.btn-green { background: var(--green); color: #fff; } .btn-green:hover { background: #047857; }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }
.btn-lg { padding: 13px 20px; font-size: 15px; width: 100%; }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: 8px; } .btn-row > * { flex: 1; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--primary-soft); color: var(--primary); }
.badge.green { background: var(--green-soft); color: var(--green); }
.badge.amber { background: var(--amber-soft); color: var(--amber); }
.badge.red { background: var(--red-soft); color: var(--red); }
.badge.gray { background: #f1f5f9; color: var(--muted); }

/* ---------- login ---------- */
.login-card { width: 100%; max-width: 380px; background: #fff; border-radius: 16px; padding: 34px 30px; box-shadow: 0 24px 60px rgba(0,0,0,.35); display: flex; flex-direction: column; gap: 14px; }
.login-logo-wrap { display: flex; justify-content: center; }
.login-logo { width: 64px; height: 64px; border-radius: 18px; background: linear-gradient(135deg, #6366f1, #0f766e); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: 800; }
.login-error { color: var(--red); font-size: 13px; min-height: 18px; text-align: center; }
.eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--muted); font-weight: 700; }
.eyebrow.center { text-align: center; }
.muted { color: var(--muted); font-size: 13px; line-height: 1.5; } .muted.center { text-align: center; } .small { font-size: 12px; }
.center { text-align: center; }

/* ---------- layout ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: var(--sidebar-bg); color: var(--sidebar-text); display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; z-index: 50; }
.main { flex: 1; margin-left: 240px; padding: 0 20px 40px; min-width: 0; }
.brand { display: flex; align-items: center; gap: 10px; padding: 18px 16px; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand-logo { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, #6366f1, #0f766e); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 15px; }
.brand-text strong { color: #fff; font-size: 15px; display: block; }
.brand-text span { font-size: 11.5px; color: #94a3b8; }
#mainNav { flex: 1; overflow-y: auto; padding: 10px 8px; }
#mainNav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; color: var(--sidebar-text); font-weight: 500; margin-bottom: 2px; cursor: pointer; text-decoration: none; }
#mainNav a:hover { background: rgba(255,255,255,.06); color: #fff; }
#mainNav a.active { background: var(--sidebar-active); color: #fff; }
.nav-ico { width: 20px; text-align: center; }
.sidebar-foot { padding: 12px; border-top: 1px solid rgba(255,255,255,.08); display: flex; flex-direction: column; gap: 10px; }
.user-chip { display: flex; align-items: center; gap: 10px; }
.user-avatar { width: 36px; height: 36px; border-radius: 50%; background: #334155; color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; }
.user-chip b { color: #fff; font-size: 13px; display: block; }
.user-chip small { color: #94a3b8; font-size: 11.5px; }

.topbar { display: flex; align-items: center; gap: 14px; padding: 18px 0 16px; position: sticky; top: 0; background: var(--bg); z-index: 40; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.clock { font-size: 13px; color: var(--muted); font-weight: 600; font-variant-numeric: tabular-nums; }
#mobileNavBtn { display: none; }

.page { animation: fadeIn .2s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---------- panels & tables ---------- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 16px; }
.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.panel-grid.two { grid-template-columns: 1fr 1fr; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.stat-grid.two { grid-template-columns: repeat(4, 1fr); }
.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 4px; }
.stat-label { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }
.stat-value { font-size: 22px; font-weight: 800; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: 12px; color: var(--muted); }
.green { color: var(--green); } .amber { color: var(--amber); } .red { color: var(--red); } .warn { color: var(--amber); }

.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); padding: 8px 10px; border-bottom: 2px solid var(--border); white-space: nowrap; }
.table td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: #f8fafc; }
.table .r { text-align: right; font-variant-numeric: tabular-nums; }
.table .actions { display: flex; gap: 6px; justify-content: flex-end; }
.prod-thumb { width: 34px; height: 34px; border-radius: 8px; object-fit: cover; background: #f1f5f9; }
.empty { text-align: center; color: var(--muted); padding: 30px !important; font-size: 13px; }

/* ---------- page toolbar ---------- */
.page-toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.page-toolbar input, .page-toolbar select { min-width: 180px; }
.toolbar-info { margin-left: auto; color: var(--muted); font-size: 13px; }
.toolbar-info b { color: var(--text); }

/* ---------- POS ---------- */
.pos-layout { display: grid; grid-template-columns: 1fr 380px; gap: 16px; height: calc(100vh - 130px); }
.pos-left { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.pos-toolbar { display: flex; gap: 10px; }
.pos-toolbar input { flex: 1; font-size: 15px; }
.pos-grid { flex: 1; overflow-y: auto; display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; align-content: start; padding: 2px; }
.pos-card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px; cursor: pointer; transition: .12s; display: flex; flex-direction: column; gap: 4px; box-shadow: var(--shadow); }
.pos-card:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(79,70,229,.15); }
.pos-card .pc-img { height: 64px; display: flex; align-items: center; justify-content: center; overflow: hidden; border-radius: 8px; background: #f8fafc; }
.pos-card .pc-img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.pos-card .pc-img .noimg { color: #cbd5e1; font-size: 26px; }
.pos-card .pc-name { font-weight: 600; font-size: 13px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 34px; }
.pos-card .pc-price { color: var(--primary); font-weight: 800; font-size: 14px; }
.pos-card .pc-stock { font-size: 11px; color: var(--muted); }
.pos-card .pc-stock.low { color: var(--red); font-weight: 700; }
.pos-card.out .pc-img, .pos-card.out .pc-name { opacity: .4; }

.pos-right { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); display: flex; flex-direction: column; box-shadow: var(--shadow); overflow: hidden; }
.cart-head { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--border); }
.cart-head h3 { margin: 0; }
.cart-head .badge { margin-left: auto; }
.cart-items { flex: 1; overflow-y: auto; padding: 8px 10px; }
.cart-item { display: flex; align-items: center; gap: 8px; padding: 8px; border-bottom: 1px dashed var(--border); }
.cart-item .ci-info { flex: 1; min-width: 0; }
.cart-item .ci-name { font-weight: 600; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cart-item .ci-price { font-size: 12px; color: var(--muted); }
.cart-item .ci-qty { display: flex; align-items: center; gap: 4px; }
.cart-item .ci-qty button { width: 24px; height: 24px; border-radius: 6px; border: 1px solid var(--border); background: #fff; font-weight: 700; }
.cart-item .ci-qty span { min-width: 34px; text-align: center; font-weight: 700; }
.cart-item .ci-total { font-weight: 700; font-size: 13px; min-width: 70px; text-align: right; font-variant-numeric: tabular-nums; }
.cart-item .ci-del { color: var(--red); background: none; border: none; font-size: 15px; }
.cart-summary { padding: 12px 14px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 7px; }
.sum-row { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.sum-row b { color: var(--text); font-variant-numeric: tabular-nums; }
.sum-row.total { font-size: 17px; color: var(--text); border-top: 2px solid var(--border); padding-top: 9px; }
.sum-row.total b { color: var(--primary); font-size: 19px; }
.inline-input { display: flex; gap: 4px; }
.inline-input input { width: 76px; padding: 5px 8px; font-size: 13px; text-align: right; }
.inline-input select { padding: 5px 6px; font-size: 12px; width: 58px; }
.pos-actions { padding: 12px 14px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }

/* ---------- modal ---------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.55); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 16px; backdrop-filter: blur(2px); }
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; padding: 22px; box-shadow: 0 24px 60px rgba(0,0,0,.3); animation: fadeIn .18s ease; }
.modal.wide { max-width: 760px; }
.modal h3 { margin-bottom: 14px; }
.modal .field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.modal .field > span { font-size: 12.5px; font-weight: 600; color: var(--muted); }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.modal-close { position: sticky; top: 0; float: right; background: none; border: none; font-size: 20px; color: var(--muted); }

/* ---------- payment ---------- */
.pay-total-box { text-align: center; padding: 14px; background: var(--primary-soft); border-radius: 12px; margin-bottom: 14px; }
.pay-total-box .pt-label { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; }
.pay-total-box .pt-value { font-size: 30px; font-weight: 800; color: var(--primary); font-variant-numeric: tabular-nums; }
.method-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 12px; }
.method-btn { padding: 12px; border: 2px solid var(--border); border-radius: 10px; background: #fff; font-weight: 600; font-size: 13.5px; text-align: center; }
.method-btn.active { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.pay-change { text-align: center; font-size: 15px; padding: 8px; border-radius: 8px; background: var(--green-soft); color: var(--green); font-weight: 700; margin-top: 10px; }
.pay-change.neg { background: var(--red-soft); color: var(--red); }

/* ---------- print receipt ---------- */
.receipt { width: 72mm; margin: 0 auto; background: #fff; color: #000; font-family: 'Courier New', monospace; font-size: 12px; line-height: 1.45; padding: 8px; }
.receipt .rc-center { text-align: center; }
.receipt .rc-store { font-size: 15px; font-weight: 700; }
.receipt .rc-line { border-top: 1px dashed #000; margin: 6px 0; }
.receipt table { width: 100%; border-collapse: collapse; }
.receipt .rc-item td { padding: 1px 0; vertical-align: top; }
.receipt .rc-right { text-align: right; white-space: nowrap; }

@media print {
  body * { visibility: hidden !important; }
  #printArea, #printArea * { visibility: visible !important; }
  #printArea { display: block !important; position: absolute; left: 0; top: 0; width: 72mm; }
}

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid.two { grid-template-columns: repeat(2, 1fr); }
  .panel-grid, .panel-grid.two { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: .2s; width: 260px; }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,.4); }
  .main { margin-left: 0; }
  #mobileNavBtn { display: inline-flex; }
  .pos-layout { grid-template-columns: 1fr; height: auto; }
  .pos-right { min-height: 420px; }
}
@media (max-width: 560px) {
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-value { font-size: 18px; }
  .topbar { flex-wrap: wrap; }
  .method-grid { grid-template-columns: 1fr; }
}