/* ==========================================================
   KASIR PRO — Clean, Minimalist, Tactile POS System
   Optimized for Desktop, Tablet & Smartphone
   ========================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-surface: #f1f5f9;
  --border: #e2e8f0;
  --border-focus: #3b82f6;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  
  --success: #10b981;
  --success-light: #ecfdf5;
  --danger: #ef4444;
  --danger-light: #fef2f2;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* ===== DARK MODE PALETTE ===== */
[data-theme="dark"] {
  --bg-app: #090d16;
  --bg-card: #0f172a;
  --bg-surface: #1e293b;
  --border: #243044;
  --border-focus: #3b82f6;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-light: #64748b;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: rgba(59, 130, 246, 0.15);
  
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.15);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.15);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.15);
  
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5), 0 4px 6px -4px rgba(0,0,0,0.3);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .pos-search-input,
[data-theme="dark"] .qty-input,
[data-theme="dark"] select.form-control,
[data-theme="dark"] textarea.form-control {
  background: #1e293b;
  color: #f8fafc;
  border-color: #334155;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .pos-search-input:focus {
  background: #0f172a;
  border-color: #3b82f6;
}

[data-theme="dark"] .kp-modal {
  background: #0f172a;
  color: #f8fafc;
}

[data-theme="dark"] .table-custom tr:hover td {
  background: #1e293b;
}

[data-theme="dark"] .btn-secondary {
  background: #1e293b;
  color: #f8fafc;
  border-color: #334155;
}
[data-theme="dark"] .btn-secondary:hover {
  background: #334155;
}

[data-theme="dark"] footer,
[data-theme="dark"] .mobile-bottom-nav {
  background: #0f172a;
  border-top-color: #243044;
}

[data-theme="dark"] .receipt-wrapper {
  background: #ffffff;
  color: #000000;
}

[data-theme="dark"] .category-tab {
  background: #1e293b;
  border-color: #334155;
  color: #94a3b8;
}

[data-theme="dark"] .category-tab:hover {
  background: #334155;
  color: #f8fafc;
}

[data-theme="dark"] .category-tab.active {
  background: #2563eb !important;
  color: #ffffff !important;
  border-color: #3b82f6 !important;
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.4);
}

[data-theme="dark"] .btn-quick-cash {
  background: #1e293b;
  border-color: #334155;
  color: #f8fafc;
}

[data-theme="dark"] .btn-quick-cash:hover,
[data-theme="dark"] .btn-quick-cash:active {
  background: rgba(59, 130, 246, 0.25);
  border-color: #3b82f6;
  color: #93c5fd;
}

[data-theme="dark"] .pay-method-label {
  background: #1e293b;
  border-color: #334155;
  color: #94a3b8;
}

[data-theme="dark"] .pay-method-radio:checked + .pay-method-label {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
}

[data-theme="dark"] .product-pos-card:hover {
  border-color: #3b82f6;
  background: #141f32;
}

[data-theme="dark"] .product-pos-card:active {
  background: #1e293b;
}

/* ===== CUSTOM TOAST NOTIFICATIONS ===== */
.kp-toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 380px;
  width: calc(100% - 40px);
}

.kp-toast {
  pointer-events: auto;
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  font-weight: 600;
  transform: translateY(-20px);
  opacity: 0;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}

.kp-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.kp-toast-icon {
  font-size: 1.15rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.kp-toast-msg {
  flex: 1;
  line-height: 1.35;
}

.kp-toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.kp-toast-success { border-left: 4px solid var(--success); }
.kp-toast-danger, .kp-toast-error { border-left: 4px solid var(--danger); }
.kp-toast-warning { border-left: 4px solid var(--warning); }
.kp-toast-info { border-left: 4px solid var(--primary); }

[data-theme="dark"] .kp-toast {
  background: #0f172a;
  border-color: #334155;
  color: #f8fafc;
}

.kp-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: auto;
}

.theme-toggle-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover {
  background: var(--bg-surface);
  border-color: var(--border-focus);
  color: var(--text-main);
}

/* Universal Navbar Scanner Button */
.scanner-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 9999px;
  color: var(--text-main);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.scanner-nav-btn:hover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
}

.scanner-nav-btn.connected {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
}

[data-theme="dark"] .scanner-nav-btn.connected {
  background: #064e3b;
  color: #34d399;
  border-color: #059669;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom);
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== TOP NAVIGATION BAR (MODERN 2026 SAAS POS) ===== */
.kp-navbar {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  transition: all 0.2s ease;
}

[data-theme="dark"] .kp-navbar {
  background: rgba(15, 23, 42, 0.88);
}

.kp-navbar-inner {
  width: 100%;
  max-width: 1520px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* 1. LEFT: Brand */
.kp-navbar-left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.kp-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: transform 0.15s ease;
}

.kp-brand:hover {
  transform: translateY(-1px);
}

.kp-brand-badge {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
}

[data-theme="dark"] .kp-brand-badge {
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.kp-brand-info {
  display: flex;
  flex-direction: column;
}

.kp-brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--text-main);
  line-height: 1.15;
}

.kp-brand-title span {
  color: var(--primary);
}

.kp-brand-tag {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

/* 2. CENTER: Segmented Nav Tabs */
.kp-navbar-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.kp-nav-pill-group {
  display: inline-flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 4px;
  border-radius: 12px;
  gap: 3px;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.03);
}

.kp-nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.kp-nav-tab:hover {
  color: var(--text-main);
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .kp-nav-tab:hover {
  background: rgba(255, 255, 255, 0.06);
}

.kp-nav-tab.active {
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.kp-nav-tab.active i {
  color: #ffffff;
}

.nav-caret {
  font-size: 0.65rem;
  margin-left: 2px;
  transition: transform 0.2s ease;
}

/* Admin Dropdown Menu */
.kp-nav-dropdown {
  position: relative;
  display: inline-block;
}

.kp-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  width: 250px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 100;
}

[data-theme="dark"] .kp-dropdown-menu {
  background: #0f172a;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5);
}

.kp-nav-dropdown.open .kp-dropdown-menu,
.kp-nav-dropdown:hover .kp-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.kp-nav-dropdown.open .nav-caret,
.kp-nav-dropdown:hover .nav-caret {
  transform: rotate(180deg);
}

.kp-dropdown-header {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  padding: 6px 10px 4px;
}

.kp-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-main);
  transition: all 0.15s ease;
}

.kp-dropdown-item:hover {
  background: var(--bg-surface);
}

.kp-dropdown-item.active {
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
}

[data-theme="dark"] .kp-dropdown-item.active {
  background: rgba(59, 130, 246, 0.16);
}

.dropdown-item-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.825rem;
  flex-shrink: 0;
}

.dropdown-item-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.dropdown-item-text strong {
  font-size: 0.8rem;
  font-weight: 700;
}

.dropdown-item-text small {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.kp-dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

/* 3. RIGHT: Tools & User Profile */
.kp-navbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Phone Scanner Chip */
.kp-scanner-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 9999px;
  color: var(--text-main);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.kp-scanner-chip:hover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
}

.scanner-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #f59e0b;
  box-shadow: 0 0 6px #f59e0b;
  display: inline-block;
  transition: all 0.2s ease;
}

.kp-scanner-chip.connected {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.08);
  color: #10b981;
}

.kp-scanner-chip.connected .scanner-dot {
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
}

/* Icon Buttons (Theme Switcher) */
.kp-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.925rem;
  transition: all 0.18s ease;
}

.kp-icon-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-card);
  transform: rotate(15deg);
}

/* User Profile Chip */
.kp-user-profile-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 3px 4px 3px 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 9999px;
  transition: border-color 0.15s ease;
}

.kp-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
}

.kp-user-details {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  padding-right: 4px;
}

.kp-user-name {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-main);
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kp-user-role {
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.role-admin { color: #3b82f6; }
.role-kasir { color: #10b981; }

.kp-logout-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: all 0.15s ease;
  text-decoration: none;
}

.kp-logout-btn:hover {
  background: #fee2e2;
  color: #ef4444;
}

[data-theme="dark"] .kp-logout-btn:hover {
  background: #7f1d1d;
  color: #fca5a5;
}

/* ===== MAIN CONTENT WRAPPER ===== */
.kp-main {
  flex: 1;
  padding: 20px;
  max-width: 1520px;
  margin: 0 auto;
  width: 100%;
}

/* ===== POS 2-COLUMN LAYOUT ===== */
.pos-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 18px;
  height: calc(100vh - 100px);
}

.pos-catalog-panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.pos-toolbar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.search-input-wrapper {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
}

.search-input-wrapper > i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  pointer-events: none;
}

.pos-search-input {
  width: 100%;
  height: 44px;
  padding: 8px 48px 8px 42px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s ease;
}

.pos-search-input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.btn-scanner-icon {
  position: absolute;
  right: 6px;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-scanner-icon:hover {
  background: var(--primary);
  color: #fff;
}

/* Pairing Status Badge */
.pairing-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 700;
  transition: all 0.2s ease;
}

.pairing-status-badge.waiting {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

[data-theme="dark"] .pairing-status-badge.waiting {
  background: #451a03;
  color: #fcd34d;
  border-color: #78350f;
}

.pairing-status-badge.connected {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

[data-theme="dark"] .pairing-status-badge.connected {
  background: #064e3b;
  color: #34d399;
  border-color: #059669;
}

/* Scanner Laser Viewport */
.scanner-viewport-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 2px solid var(--primary);
  box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
}

.scanner-laser-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: #ef4444;
  box-shadow: 0 0 8px #ef4444;
  animation: scanLaser 2s infinite alternate ease-in-out;
}

@keyframes scanLaser {
  0% { top: 10%; }
  100% { top: 90%; }
}

/* Hold Cart & Pending Badges */
.btn-held-badge {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  border-radius: 9999px;
  padding: 3px 8px;
  font-size: 0.725rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

[data-theme="dark"] .btn-held-badge {
  background: #451a03;
  color: #fcd34d;
  border-color: #78350f;
}

.btn-hold-cart {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-hold-cart:hover {
  background: var(--border);
}

.held-item-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Member Box in POS */
.member-pos-box {
  padding: 10px 16px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.member-search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  max-height: 160px;
  overflow-y: auto;
  z-index: 50;
  margin-top: 2px;
}

.member-search-item {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.member-search-item:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.selected-member-card {
  background: var(--bg-card);
  border: 1px solid #93c5fd;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

[data-theme="dark"] .selected-member-card {
  border-color: #1e40af;
  background: #0f172a;
}

.category-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.category-tabs::-webkit-scrollbar { display: none; }

.category-tab {
  padding: 6px 14px;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.15s ease;
}

.category-tab:hover {
  background: var(--bg-surface);
  color: var(--text-main);
}

.category-tab.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.pos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  grid-auto-rows: minmax(110px, max-content);
  align-content: start;
  gap: 12px;
  overflow-y: auto;
  padding-right: 4px;
  flex: 1;
}

.product-pos-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  transition: transform 0.1s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  position: relative;
  min-height: 100px;
}

.product-pos-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.product-pos-card:active {
  transform: scale(0.96);
  background: #f8fafc;
}

.product-pos-card.out-of-stock {
  opacity: 0.55;
  cursor: not-allowed;
  filter: grayscale(80%);
}

.product-pos-card.out-of-stock:hover {
  transform: none;
  border-color: var(--border);
}

.pos-card-cat {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.pos-card-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pos-card-price {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  tabular-nums: true;
}

.pos-card-stock {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
  gap: 6px;
}

.pos-card-sku {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  opacity: 0.75;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 55%;
}

.stock-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 4px;
}

.stock-normal { background: var(--success-light); color: var(--success); }
.stock-low { background: var(--warning-light); color: var(--warning); }
.stock-empty { background: var(--danger-light); color: var(--danger); }

/* ===== CART REGISTER PANEL ===== */
.pos-cart-panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.cart-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-header h3 {
  font-size: 1rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-clear-cart {
  background: none;
  border: none;
  color: var(--danger);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.btn-clear-cart:hover {
  background: var(--danger-light);
}

.cart-items-wrapper {
  flex: 1;
  overflow-y: auto;
  padding: 10px 16px;
}

.cart-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}

.cart-item-row:last-child {
  border-bottom: none;
}

.cart-item-info {
  flex: 1;
  padding-right: 10px;
}

.cart-item-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.cart-item-unit-price {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.cart-qty-ctrl {
  display: flex;
  align-items: center;
  gap: 4px;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-main);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
}

.qty-btn:active {
  background: var(--border);
}

.qty-input {
  width: 36px;
  height: 28px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

.cart-item-subtotal {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  width: 75px;
  text-align: right;
}

.cart-empty-state {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  gap: 6px;
  padding: 40px 20px;
  text-align: center;
}

.cart-empty-state i {
  font-size: 2.2rem;
  opacity: 0.35;
}

/* ===== CART SUMMARY & CHECKOUT ===== */
.cart-summary-panel {
  padding: 14px 18px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
  color: var(--text-muted);
}

.summary-row.grand-total {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  padding-top: 6px;
  border-top: 1px solid var(--border);
  margin-top: 2px;
}

.summary-row.grand-total span:last-child {
  font-family: var(--font-mono);
  color: var(--primary);
}

.btn-checkout-primary {
  width: 100%;
  height: 46px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: background 0.15s ease;
  margin-top: 4px;
}

.btn-checkout-primary:hover {
  background: var(--primary-hover);
}

.btn-checkout-primary:disabled {
  background: #cbd5e1;
  cursor: not-allowed;
}

/* ===== MODAL & PAYMENT OVERLAY ===== */
.kp-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  padding: 16px;
}

.kp-modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.kp-modal {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.kp-modal-backdrop.open .kp-modal {
  transform: scale(1);
}

.kp-modal-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kp-modal-header h3 {
  font-size: 1.05rem;
  font-weight: 800;
}

.kp-modal-body {
  padding: 18px;
  max-height: 75vh;
  overflow-y: auto;
}

.quick-cash-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 10px 0;
}

.btn-quick-cash {
  padding: 10px 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.btn-quick-cash:hover, .btn-quick-cash:active {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.payment-method-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 14px;
}

.pay-method-radio {
  display: none;
}

.pay-method-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--text-muted);
  text-align: center;
}

.pay-method-radio:checked + .pay-method-label {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== RECEIPT STYLING (THERMAL PRINT 58/80MM) ===== */
.receipt-wrapper {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  background: #fff;
  padding: 16px;
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: #000;
  line-height: 1.4;
}

.receipt-header {
  text-align: center;
  margin-bottom: 12px;
}

.receipt-store-name {
  font-size: 15px;
  font-weight: 800;
  text-transform: uppercase;
}

.receipt-divider {
  border-top: 1px dashed #555;
  margin: 8px 0;
}

.receipt-table {
  width: 100%;
  border-collapse: collapse;
}

.receipt-table td {
  padding: 3px 0;
}

.receipt-footer {
  text-align: center;
  margin-top: 14px;
  font-size: 11px;
  color: #555;
}

@media print {
  body * {
    visibility: hidden;
  }
  .receipt-wrapper, .receipt-wrapper * {
    visibility: visible;
  }
  .receipt-wrapper {
    position: absolute;
    left: 0;
    top: 0;
    width: 100% !important;
    max-width: 100% !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }
}

/* ===== DATA TABLES & FORMS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.data-table-wrapper {
  overflow-x: auto;
}

.table-custom {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.table-custom th {
  background: var(--bg-surface);
  color: var(--text-muted);
  font-weight: 700;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.table-custom td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
}

.table-custom tr:hover td {
  background: #f8fafc;
}

/* Form elements */
.form-group {
  margin-bottom: 14px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text-main);
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--bg-surface); color: var(--text-main); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }

/* Alerts */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 18px;
}

.alert-success { background: var(--success-light); color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: var(--danger-light); color: #991b1b; border: 1px solid #fecaca; }

/* Keyboard hints badge */
.kbd-hint {
  display: inline-block;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
}

/* Stat Grid */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
}

/* ===== MOBILE FLOATING CART BAR & BOTTOM SHEET ===== */
.mobile-cart-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--text-main);
  color: #fff;
  padding: 12px 18px;
  z-index: 50;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.15);
  cursor: pointer;
}

.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-top: 1px solid var(--border);
  height: 56px;
  z-index: 45;
  grid-template-columns: repeat(4, 1fr);
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.mobile-bottom-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 700;
}

.mobile-bottom-item.active {
  color: var(--primary);
}

.mobile-bottom-item i {
  font-size: 1.1rem;
}

/* ==========================================================
   RESPONSIVE BREAKPOINTS (SMARTPHONE & TABLET)
   ========================================================== */

/* Tablet Landscape & Portrait (up to 960px) */
@media (max-width: 960px) {
  .pos-container {
    grid-template-columns: 1fr;
    height: auto;
  }
  
  .pos-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

/* Smartphone & Small Tablet (up to 768px) */
@media (max-width: 768px) {
  .kp-navbar {
    height: 56px;
  }
  .kp-navbar-inner {
    padding: 0 12px;
  }
  .kp-navbar-center {
    display: none; /* Replaced by bottom nav on mobile */
  }
  .kp-brand-tag {
    display: none;
  }
  .kp-user-name {
    display: none;
  }
  .scanner-chip-label {
    display: none;
  }
  .kp-scanner-chip {
    padding: 0 8px;
  }

  .kp-main {
    padding: 12px;
    padding-bottom: 74px; /* Space for bottom nav / floating bar */
  }

  .pos-container {
    grid-template-columns: 1fr;
    height: auto;
  }

  .pos-catalog-panel {
    padding: 12px;
  }

  .pos-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: minmax(90px, max-content);
    align-content: start;
    gap: 8px;
  }

  .product-pos-card {
    padding: 10px;
    min-height: 90px;
  }

  .pos-card-name {
    font-size: 0.8rem;
  }

  .pos-card-price {
    font-size: 0.875rem;
  }

  /* Cart Panel becomes Slide-up Bottom Sheet on Mobile */
  .pos-cart-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 85vh;
    border-radius: 20px 20px 0 0;
    z-index: 110;
    box-shadow: 0 -10px 30px rgba(0,0,0,0.25);
    transform: translateY(100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .pos-cart-panel.mobile-open {
    transform: translateY(0);
  }

  .pos-cart-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(2px);
    z-index: 105;
  }

  .pos-cart-backdrop.show {
    display: block;
  }

  .mobile-cart-bar {
    display: flex;
  }

  .mobile-bottom-nav {
    display: grid;
  }

  .stat-grid {
    grid-template-columns: 1fr 1fr !important;
  }

  /* Footer hidden on mobile to maximize screen */
  footer {
    display: none !important;
  }
}