/* ============================================================
   QR BillPOS — Main Stylesheet
   Design: Industrial-Utility POS aesthetic
   Font: Barlow Condensed (display) + DM Sans (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ---- CSS Variables ---- */
:root {
  --bg:          #0d0f14;
  --bg2:         #14171f;
  --bg3:         #1c2030;
  --card:        #1a1d27;
  --card2:       #20253a;
  --border:      #2a2f45;
  --border2:     #353b55;
  --accent:      #00e5a0;
  --accent2:     #00b87a;
  --accent-glow: rgba(0,229,160,.18);
  --danger:      #ff4e6a;
  --warning:     #ffb830;
  --info:        #38b6ff;
  --text:        #e8eaf2;
  --text2:       #8b91ab;
  --text3:       #545b75;
  --radius:      10px;
  --radius2:     6px;
  --shadow:      0 4px 24px rgba(0,0,0,.5);
  --shadow2:     0 2px 12px rgba(0,0,0,.3);
  --font-display:'Barlow Condensed', sans-serif;
  --font-body:   'DM Sans', sans-serif;
  --transition:  all .2s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ============================================================
   LAYOUT
   ============================================================ */
.app-wrapper {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ---- Top Bar ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 56px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 100;
}
.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.topbar-brand .logo-icon {
  width: 34px; height: 34px;
  background: var(--accent);
  border-radius: var(--radius2);
  display: grid; place-items: center;
  color: #000;
  font-size: 18px;
}
.topbar-brand h1 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--text);
}
.topbar-brand h1 span { color: var(--accent); }

.topbar-meta {
  display: flex; align-items: center; gap: 16px;
  font-size: 13px; color: var(--text2);
}
.topbar-meta .badge {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 500;
}
.topbar-meta .badge.green { border-color: var(--accent); color: var(--accent); }

/* ---- Main Grid ---- */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  height: calc(100vh - 56px);
  overflow: hidden;
}

/* ---- LEFT PANEL ---- */
.panel-left {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--border);
}

.panel-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  flex-shrink: 0;
}
.panel-section-header h2 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text2);
}

/* ---- Scanner Area ---- */
.scanner-area {
  flex-shrink: 0;
  padding: 16px 20px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}

.scan-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}
.scan-tab {
  flex: 1;
  padding: 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  color: var(--text2);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.scan-tab.active, .scan-tab:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

/* Camera scan container */
.camera-container {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  min-height: 200px;
}
.camera-container #qr-reader {
  width: 100% !important;
}
/* Override html5-qrcode default styles */
#qr-reader > div:first-child { display: none !important; } /* hide header */
#qr-reader video { border-radius: var(--radius); }
#qr-reader__scan_region { background: transparent !important; }
#qr-reader__dashboard { background: var(--bg3) !important; border-top: 1px solid var(--border) !important; }
#qr-reader__dashboard button {
  background: var(--accent) !important;
  color: #000 !important;
  border: none !important;
  border-radius: var(--radius2) !important;
  font-family: var(--font-body) !important;
  font-weight: 600 !important;
  padding: 8px 18px !important;
  cursor: pointer !important;
}
#qr-reader__dashboard select { color: var(--text) !important; background: var(--bg3) !important; border: 1px solid var(--border) !important; border-radius: var(--radius2) !important; }

.scan-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.scan-frame {
  width: 160px; height: 160px;
  position: relative;
}
.scan-frame::before, .scan-frame::after,
.scan-frame > span::before, .scan-frame > span::after {
  content: '';
  position: absolute;
  width: 28px; height: 28px;
  border-color: var(--accent);
  border-style: solid;
}
.scan-frame::before  { top:0; left:0;   border-width: 3px 0 0 3px; }
.scan-frame::after   { top:0; right:0;  border-width: 3px 3px 0 0; }
.scan-frame > span::before { bottom:0; left:0;  border-width: 0 0 3px 3px; }
.scan-frame > span::after  { bottom:0; right:0; border-width: 0 3px 3px 0; }

.scan-line {
  position: absolute;
  left: 4px; right: 4px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: scanLine 2s ease-in-out infinite;
}
@keyframes scanLine {
  0%   { top: 4px; }
  50%  { top: calc(100% - 4px); }
  100% { top: 4px; }
}

/* Manual input */
.manual-input-wrap {
  display: flex; gap: 8px;
}
.manual-input-wrap input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  color: var(--text);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  transition: var(--transition);
  outline: none;
}
.manual-input-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.manual-input-wrap input::placeholder { color: var(--text3); }

/* Search results dropdown */
.search-results-drop {
  position: relative;
}
.search-results-list {
  position: absolute;
  top: 100%; left: 0; right: 0;
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  z-index: 200;
  max-height: 200px;
  overflow-y: auto;
  box-shadow: var(--shadow);
  display: none;
}
.search-results-list.open { display: block; }
.search-result-item {
  padding: 10px 14px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--accent-glow); }
.search-result-item .sn { font-weight: 500; }
.search-result-item .sp { color: var(--accent); font-weight: 600; }

/* ---- Scan feedback ---- */
.scan-feedback {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: var(--radius2);
  font-size: 13px;
  font-weight: 500;
  display: none;
  align-items: center;
  gap: 8px;
  animation: fadeInUp .3s ease;
}
@keyframes fadeInUp {
  from { opacity:0; transform:translateY(6px); }
  to   { opacity:1; transform:translateY(0); }
}
.scan-feedback.success { display:flex; background: rgba(0,229,160,.12); border: 1px solid var(--accent); color: var(--accent); }
.scan-feedback.error   { display:flex; background: rgba(255,78,106,.12); border: 1px solid var(--danger);  color: var(--danger); }
.scan-feedback.info    { display:flex; background: rgba(56,182,255,.12);  border: 1px solid var(--info);    color: var(--info); }

/* ---- Product Grid ---- */
.products-grid-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
}
.products-grid-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 12px;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform .2s ease;
  transform-origin: left;
}
.product-card:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow2); }
.product-card:hover::before { transform: scaleX(1); }
.product-card:active { transform: scale(.97); }
.pc-cat {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 6px;
}
.pc-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 8px;
}
.pc-price {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

/* ============================================================
   RIGHT PANEL — Cart
   ============================================================ */
.panel-right {
  display: flex;
  flex-direction: column;
  background: var(--bg2);
  overflow: hidden;
}

/* Cart items list */
.cart-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 10px;
  color: var(--text3);
}
.cart-empty .empty-icon {
  font-size: 48px;
  opacity: .3;
}
.cart-empty p { font-size: 14px; }

.cart-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 8px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  animation: fadeInUp .25s ease;
}
.ci-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
  grid-column: 1;
}
.ci-price {
  font-size: 12px;
  color: var(--text2);
  margin-top: 2px;
}
.ci-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  grid-column: 1 / -1;
  justify-content: space-between;
}
.qty-btn {
  width: 28px; height: 28px;
  border-radius: 6px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  display: grid; place-items: center;
  transition: var(--transition);
}
.qty-btn:hover { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); }
.qty-val {
  min-width: 28px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.ci-subtotal {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.ci-delete {
  background: transparent;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  border-radius: 4px;
  transition: var(--transition);
}
.ci-delete:hover { color: var(--danger); }

/* Cart footer */
.cart-footer {
  border-top: 1px solid var(--border);
  padding: 16px;
  background: var(--bg2);
  flex-shrink: 0;
}

.totals-table {
  width: 100%;
  font-size: 13px;
  margin-bottom: 14px;
}
.totals-table tr td { padding: 4px 0; }
.totals-table tr td:last-child { text-align: right; font-weight: 500; }
.totals-table .t-label { color: var(--text2); }
.totals-table .t-total td { 
  padding-top: 10px;
  border-top: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
}
.totals-table .t-total td.t-label { color: var(--text2); font-size: 14px; font-family: var(--font-body); font-weight: 600; }

.discount-row {
  display: flex; gap: 6px; margin-bottom: 10px;
}
.discount-row input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  color: var(--text);
  padding: 7px 10px;
  font-size: 13px;
  font-family: var(--font-body);
  outline: none;
}
.discount-row input:focus { border-color: var(--warning); }

.checkout-btn {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-transform: uppercase;
}
.checkout-btn:hover { background: var(--accent2); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,229,160,.3); }
.checkout-btn:active { transform: translateY(0); }
.checkout-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; box-shadow: none; }

.clear-btn {
  width: 100%;
  padding: 9px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  color: var(--text2);
  font-size: 13px;
  cursor: pointer;
  margin-top: 8px;
  transition: var(--transition);
  font-family: var(--font-body);
}
.clear-btn:hover { border-color: var(--danger); color: var(--danger); }

/* ============================================================
   MODAL — Checkout & Receipt
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 1000;
  display: none;
  place-items: center;
  backdrop-filter: blur(4px);
}
.modal-overlay.open { display: grid; }

.modal {
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 14px;
  width: 90%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
  animation: modalIn .25s ease;
}
@keyframes modalIn {
  from { opacity:0; transform:scale(.95) translateY(10px); }
  to   { opacity:1; transform:scale(1)   translateY(0); }
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .5px;
}
.modal-close {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  width: 30px; height: 30px;
  cursor: pointer;
  font-size: 18px;
  display: grid; place-items: center;
  transition: var(--transition);
}
.modal-close:hover { color: var(--danger); border-color: var(--danger); }

.modal-body { padding: 20px 24px; }

/* Payment form */
.form-group {
  margin-bottom: 14px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text2);
  margin-bottom: 6px;
}
.form-group input,
.form-group select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  color: var(--text);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.confirm-btn {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 8px;
}
.confirm-btn:hover { background: var(--accent2); }

/* ---- Receipt ---- */
.receipt-wrap {
  font-family: 'Courier New', monospace;
  background: #fff;
  color: #000;
  padding: 28px 24px;
  max-width: 380px;
  margin: 0 auto;
  border-radius: 4px;
}
.receipt-header { text-align: center; margin-bottom: 16px; }
.receipt-header .rh-store { font-size: 18px; font-weight: 700; }
.receipt-header .rh-addr  { font-size: 11px; color: #555; }
.receipt-header .rh-inv   { font-size: 12px; margin-top: 6px; font-weight: 700; }
.receipt-divider {
  border: none; border-top: 1px dashed #ccc; margin: 12px 0;
}
.receipt-items { font-size: 12px; }
.ri-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}
.ri-row .ri-name { flex: 1; }
.ri-row .ri-qty  { min-width: 30px; text-align: center; color: #666; }
.ri-row .ri-price{ min-width: 80px; text-align: right; }
.receipt-totals { font-size: 12px; }
.rt-row { display: flex; justify-content: space-between; margin-bottom: 3px; }
.rt-row.rt-total {
  font-size: 16px;
  font-weight: 700;
  border-top: 2px solid #000;
  padding-top: 6px;
  margin-top: 6px;
}
.receipt-footer { text-align: center; font-size: 11px; color: #555; margin-top: 16px; }

.receipt-actions {
  display: flex; gap: 10px; margin-top: 16px;
}
.receipt-actions button {
  flex: 1;
  padding: 10px;
  border-radius: var(--radius2);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-print    { background: var(--bg3); border: 1px solid var(--border) !important; color: var(--text); }
.btn-print:hover { border-color: var(--accent) !important; color: var(--accent); }
.btn-new      { background: var(--accent); color: #000; }
.btn-new:hover{ background: var(--accent2); }

/* ============================================================
   UTILITY
   ============================================================ */
.btn {
  padding: 9px 18px;
  border-radius: var(--radius2);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-primary   { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent2); }
.btn-secondary { background: var(--bg3); border: 1px solid var(--border); color: var(--text2); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.spin {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
  .modal-overlay { display: grid !important; }
  .receipt-actions, .modal-header, .modal-close, .app-wrapper { display: none !important; }
  .modal-overlay { background: none !important; position: static; }
  .modal { border: none; box-shadow: none; max-height: none; }
  .receipt-wrap { max-width: 100%; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .main-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    height: auto;
    overflow: visible;
  }
  .app-wrapper { height: auto; overflow: visible; }
  .panel-left  { height: auto; overflow: visible; }
  .panel-right { max-height: 60vh; }
  .products-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .topbar-meta   { display: none; }
}