/* Restaurant Inventory Manager - Modern Responsive Styles */
/* Mobile-First Design for Phone, Tablet, Desktop */

/* ============================================================================
   ROOT VARIABLES & RESET
   ============================================================================ */

:root {
  /* Colors */
  --primary: #007bff;
  --primary-dark: #0056b3;
  --success: #28a745;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #17a2b8;
  --secondary: #6c757d;
  --light: #f8f9fa;
  --dark: #343a40;
  
  /* Semantic colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-dark: #212529;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-muted: #8898aa;
  
  /* Borders */
  --border-color: #dee2e6;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  
  /* Layout */
  --header-height: 60px;
  --nav-height: 56px;
  --max-width: 1400px;
  
  /* Touch targets (minimum 44x44px) */
  --touch-target: 44px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================================
   PRODUCT/INGREDIENT NAME CAPITALIZATION (GLOBAL)
   ============================================================================ */

/* Capitalize all product and ingredient names for better visibility */
.item-name,
.alert-title,
.production-item strong,
.shopping-item .item-name,
td.item-name,
datalist option,
#item-name-input {
  text-transform: uppercase;
}

/* ============================================================================
   LAYOUT STRUCTURE
   ============================================================================ */

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Header */
.app-header {
  height: var(--header-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-md);
  box-shadow: var(--shadow-sm);
  z-index: 100;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.app-logo-icon {
  font-size: 24px;
}

.app-header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Tab Navigation */
.tab-nav {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-sm);
}

.tab-nav-inner {
  display: flex;
  min-width: max-content;
}

.tab-button {
  flex: 1;
  min-width: 100px;
  height: var(--nav-height);
  padding: 0 var(--spacing-md);
  border: none;
  background: none;
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
}

.tab-button:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.tab-button.active {
  color: var(--primary);
  background: var(--bg-secondary);
}

.tab-button.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
}

.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--danger);
  color: white;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
}

/* Content Area */
.tab-content-container {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-content {
  display: none;
  padding: var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.tab-content.active {
  display: block;
}

/* ============================================================================
   CARDS & CONTAINERS
   ============================================================================ */

.card {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.card-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.card-body {
  padding: var(--spacing-md);
}

.card-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

/* ============================================================================
   ALERTS & NOTIFICATIONS
   ============================================================================ */

.alert-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--info);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.alert-card.critical {
  border-left-color: var(--danger);
  background: #fff5f5;
}

.alert-card.warning {
  border-left-color: var(--warning);
  background: #fffbf0;
}

.alert-card.success {
  border-left-color: var(--success);
  background: #f0fff4;
}

.alert-card.sale {
  border-left-color: #ff6b35;
  background: linear-gradient(135deg, #fff5f0 0%, #ffffff 100%);
}

.alert-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.alert-icon {
  font-size: 24px;
}

.alert-title {
  flex: 1;
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.alert-body {
  padding: var(--spacing-sm) 0;
}

.alert-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.metric-value {
  font-size: var(--font-size-base);
  font-weight: 600;
}

.alert-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  min-height: var(--touch-target);
  padding: 0 var(--spacing-md);
  border: none;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary);
  color: white;
}

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

.btn-success {
  background: var(--success);
  color: white;
}

.btn-success:hover {
  background: #218838;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #c82333;
}

.btn-warning {
  background: var(--warning);
  color: var(--dark);
}

.btn-info {
  background: var(--info);
  color: white;
}

.btn-secondary {
  background: var(--secondary);
  color: white;
}

.btn-light {
  background: var(--light);
  color: var(--dark);
  border: 1px solid var(--border-color);
}

.btn-sm {
  min-height: 36px;
  padding: 0 var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.btn-lg {
  min-height: 52px;
  padding: 0 var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: var(--touch-target);
  height: var(--touch-target);
  padding: 0;
  border-radius: 50%;
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  min-height: var(--touch-target);
  padding: 0 var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

textarea.form-control {
  min-height: 100px;
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  resize: vertical;
}

/* ============================================================================
   SHOPPING LIST
   ============================================================================ */

.shopping-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.shopping-item.completed {
  opacity: 0.6;
}

.shopping-item.completed .item-name {
  text-decoration: line-through;
}

.item-checkbox input[type="checkbox"] {
  width: 24px;
  height: 24px;
  cursor: pointer;
}

.item-content {
  flex: 1;
  min-width: 0;
}

.item-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 4px;
}

.item-details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.price-intel {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-info {
  background: #d1ecf1;
  color: #0c5460;
}

.badge-secondary {
  background: #e2e3e5;
  color: #383d41;
}

.badge-success {
  background: #d4edda;
  color: #155724;
}

.badge-danger {
  background: #f8d7da;
  color: #721c24;
}

.badge-sale {
  background: #ff6b35;
  color: white;
}

.item-actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-shrink: 0;
}

/* ============================================================================
   EMPTY STATES
   ============================================================================ */

.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.text-muted {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

.d-flex {
  display: flex !important;
}

.justify-content-between {
  justify-content: space-between !important;
}

.align-items-center {
  align-items: center !important;
}

.gap-sm {
  gap: var(--spacing-sm) !important;
}

.gap-md {
  gap: var(--spacing-md) !important;
}

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-xs) !important; }
.mt-2 { margin-top: var(--spacing-sm) !important; }
.mt-3 { margin-top: var(--spacing-md) !important; }
.mt-4 { margin-top: var(--spacing-lg) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-xs) !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-3 { padding: var(--spacing-md) !important; }
.p-4 { padding: var(--spacing-lg) !important; }

/* ============================================================================
   RESPONSIVE BREAKPOINTS
   ============================================================================ */

/* Tablet (768px and up) */
@media (min-width: 768px) {
  :root {
    --spacing-md: 20px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
  }
  
  .app-logo-text {
    display: inline;
  }
  
  .tab-button {
    min-width: 120px;
  }
  
  .tab-content {
    padding: var(--spacing-lg);
  }
  
  .card-body {
    padding: var(--spacing-lg);
  }
  
  .shopping-item {
    padding: var(--spacing-lg);
  }
}

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
  .app-header {
    padding: 0 var(--spacing-xl);
  }
  
  .tab-button {
    min-width: 150px;
  }
  
  .tab-content {
    padding: var(--spacing-xl);
  }
  
  /* Multi-column layouts */
  .grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
  
  .grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
  }
}

/* Large Desktop (1400px and up) */
@media (min-width: 1400px) {
  .grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
  }
}

/* Print styles */
@media print {
  .app-header,
  .tab-nav,
  .btn,
  .alert-actions {
    display: none !important;
  }
  
  .tab-content {
    display: block !important;
    padding: 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--border-color);
    page-break-inside: avoid;
  }
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Smooth transitions */
* {
  transition-property: background-color, border-color, color, box-shadow;
  transition-duration: 0.2s;
  transition-timing-function: ease;
}

/* Disable transitions during tab changes */
.tab-content {
  transition: none;
}

/* ============================================================================
   RESERVATION PAYMENT CHECKBOX
   ============================================================================ */

.payment-checkbox-container {
  margin: var(--spacing-sm) 0;
}

.payment-checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  user-select: none;
  font-size: var(--font-size-base);
  font-weight: 500;
}

.payment-checkbox {
  width: 24px;
  height: 24px;
  cursor: pointer;
  accent-color: var(--success);
  flex-shrink: 0;
}

.payment-checkbox:checked + .payment-label {
  color: var(--success);
  font-weight: 600;
}

.payment-label {
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.payment-checkbox:not(:checked) + .payment-label {
  color: var(--warning);
}

/* Mobile optimization for checkboxes */
@media (max-width: 767px) {
  .payment-checkbox {
    width: 28px;
    height: 28px;
  }
  
  .payment-checkbox-label {
    padding: var(--spacing-sm);
    margin: -var(--spacing-sm);
    min-height: 44px;
  }
}

/* ============================================================================
   CUSTOMER SUGGESTIONS & RESERVATION MODAL
   ============================================================================ */

.customer-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
  margin-top: 4px;
}

.customer-suggestion-item {
  padding: 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
}

.customer-suggestion-item:last-child {
  border-bottom: none;
}

.customer-suggestion-item:hover {
  background-color: var(--bg-secondary);
}

.customer-suggestion-item:active {
  background-color: var(--light);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

@media (max-width: 767px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-group {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* ============================================================================
   INGREDIENT AUTOCOMPLETE SUGGESTIONS
   ============================================================================ */

.ingredient-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow);
  max-height: 200px;
  overflow-y: auto;
  z-index: 1000;
  margin-top: 4px;
}

.ingredient-suggestions .customer-suggestion-item {
  padding: 10px 12px;
  cursor: pointer;
  border-bottom: 1px solid #f0f0f0;
  transition: background-color 0.2s ease;
}

.ingredient-suggestions .customer-suggestion-item:last-child {
  border-bottom: none;
}

.ingredient-suggestions .customer-suggestion-item:hover {
  background-color: #f8f9fa;
}


@media (max-width: 767px) {
  .modal-actions {
    flex-direction: column-reverse;
  }
  
  .modal-actions .btn {
    width: 100%;
  }
}