.pos-app {
  --pos-primary: #0f766e;
  --pos-primary-rgb: 15, 118, 110;
  --pos-bg: #f6f7fb;
  --pos-surface: #ffffff;
  --pos-text: #0f172a;
  --pos-muted: #475569;
  --pos-border: rgba(15, 23, 42, 0.12);
}

:root,
[data-bs-theme="light"] {
  --bs-primary: #0f766e;
  --bs-primary-rgb: 15, 118, 110;
  --bs-link-color: #0f766e;
  --bs-link-hover-color: #115e59;
  --bs-focus-ring-color: rgba(15, 118, 110, 0.35);
  --bs-body-bg: #f6f7fb;
  --bs-body-color: #0f172a;
  --bs-border-color: rgba(15, 23, 42, 0.12);
  --bs-border-radius: 0.85rem;
  --bs-border-radius-lg: 1.1rem;
}

[data-bs-theme="dark"] {
  --bs-primary: #2dd4bf;
  --bs-primary-rgb: 45, 212, 191;
  --bs-link-color: #2dd4bf;
  --bs-link-hover-color: #5eead4;
  --bs-focus-ring-color: rgba(45, 212, 191, 0.35);
  --bs-body-bg: #0b1220;
  --bs-body-color: #e2e8f0;
  --bs-border-color: rgba(226, 232, 240, 0.14);
  --bs-tertiary-bg: #0f172a;
  --bs-body-bg: #0b1220;
  --bs-body-color: #e2e8f0;
  --bs-secondary-color: rgba(226, 232, 240, 0.72);
  --bs-tertiary-color: rgba(226, 232, 240, 0.55);
  --bs-emphasis-color: #f1f5f9;
  --bs-card-bg: #0f172a;
  --bs-card-color: #e2e8f0;
  --bs-table-color: #e2e8f0;
  --bs-table-bg: transparent;
  --bs-table-striped-bg: rgba(226, 232, 240, 0.04);
  --bs-table-hover-bg: rgba(226, 232, 240, 0.06);
  --bs-modal-bg: #0f172a;
  --bs-modal-color: #e2e8f0;
}

body {
  background: var(--bs-body-bg);
}

.navbar {
  backdrop-filter: saturate(180%) blur(12px);
}

.card {
  border-color: var(--bs-border-color);
}

[data-bs-theme="dark"] .card {
  background-color: var(--bs-card-bg);
  color: var(--bs-card-color);
}

[data-bs-theme="dark"] .card .text-muted {
  color: var(--bs-secondary-color) !important;
}

[data-bs-theme="dark"] .table {
  --bs-table-color: var(--bs-table-color);
  --bs-table-striped-bg: var(--bs-table-striped-bg);
  --bs-table-hover-bg: var(--bs-table-hover-bg);
}

[data-bs-theme="dark"] .modal-content {
  background-color: var(--bs-modal-bg);
  color: var(--bs-modal-color);
  border-color: var(--bs-border-color);
}

.btn-primary {
  --bs-btn-bg: var(--bs-primary);
  --bs-btn-border-color: var(--bs-primary);
  --bs-btn-hover-bg: color-mix(in srgb, var(--bs-primary) 88%, #000);
  --bs-btn-hover-border-color: color-mix(in srgb, var(--bs-primary) 88%, #000);
  --bs-btn-active-bg: color-mix(in srgb, var(--bs-primary) 80%, #000);
  --bs-btn-active-border-color: color-mix(in srgb, var(--bs-primary) 80%, #000);
}

.btn-outline-secondary {
  --bs-btn-border-color: color-mix(in srgb, var(--bs-border-color) 70%, transparent);
}

.pos-cart-table td,
.pos-cart-table th {
  vertical-align: middle;
}

.touch-target {
  min-height: 44px;
}

/* Mobile-first POS enhancements */
.pos-btn {
  min-height: 56px;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 1.1rem;
  padding: 0.75rem 1rem;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.pos-btn:active {
  transform: scale(0.97);
  box-shadow: 0 0 0 4px rgba(var(--bs-primary-rgb), 0.25);
}
.pos-btn-checkout {
  min-height: 64px;
  font-size: 1.25rem;
}

.pos-input {
  min-height: 56px;
  font-size: 1.1rem;
  border-radius: 1.1rem;
  padding: 0.75rem 1rem;
}

.pos-item-btn {
  min-height: 72px;
  font-size: 1rem;
  border-radius: 1.1rem;
  padding: 0.75rem 1rem;
  transition: background-color 0.15s ease, transform 0.1s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.pos-item-btn:active {
  transform: scale(0.97);
}

/* Responsive tables */
@media (max-width: 767.98px) {
  .table-responsive-stack {
    display: block;
  }
  .table-responsive-stack thead {
    display: none;
  }
  .table-responsive-stack tbody,
  .table-responsive-stack tr,
  .table-responsive-stack td {
    display: block;
    width: 100%;
  }
  .table-responsive-stack tr {
    margin-bottom: 1rem;
    border: 1px solid var(--bs-border-color);
    border-radius: var(--bs-border-radius);
    padding: 0.75rem;
  }
  .table-responsive-stack td {
    text-align: right;
    padding: 0.5rem 0;
    border: none;
    position: relative;
    padding-left: 50%;
  }
  .table-responsive-stack td::before {
    content: attr(data-label);
    position: absolute;
    left: 0;
    width: 45%;
    text-align: left;
    font-weight: 600;
    color: var(--bs-emphasis-color);
  }
}

/* Offline indicator */
.offline-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bs-danger);
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  z-index: 1080;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}
.offline-banner.show {
  transform: translateY(0);
}

/* Keyboard shortcuts hint */
.kbd-hint {
  font-size: 0.75rem;
  color: var(--bs-secondary-color);
  background: var(--bs-tertiary-bg);
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  border: 1px solid var(--bs-border-color);
}

/* Stock warning */
.stock-warning {
  color: var(--bs-warning);
  font-weight: 600;
}
.stock-danger {
  color: var(--bs-danger);
  font-weight: 700;
}

/* Enterprise badges */
.badge-enterprise {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Focus indicators */
.btn:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible {
  outline: 2px solid var(--bs-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .pos-btn,
  .pos-item-btn {
    transition: none;
  }
}

/* High contrast */
@media (prefers-contrast: high) {
  .btn-primary {
    border-width: 2px;
  }
}