/* Modern Design System */
:root {
  /* Primary Colors */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;
  --primary-900: #0c4a6e;

  /* Neutral Colors */
  --neutral-50: #fafafa;
  --neutral-100: #f5f5f5;
  --neutral-200: #e5e5e5;
  --neutral-300: #d4d4d4;
  --neutral-400: #a3a3a3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;

  /* Semantic Colors */
  --success-50: #f0fdf4;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --warning-50: #fffbeb;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --error-50: #fef2f2;
  --error-500: #ef4444;
  --error-600: #dc2626;

  /* Design Tokens */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Legacy Variables for Compatibility */
  --primary-color: var(--primary-600);
  --primary-dark: var(--primary-700);
  --primary-light: var(--primary-500);
  --accent-color: var(--primary-500);
  --text-color: var(--neutral-800);
  --text-light: var(--neutral-500);
  --divider-color: var(--neutral-200);
  --background-color: var(--neutral-50);
  --card-color: #ffffff;
  --error-color: var(--error-500);
  --success-color: var(--success-500);
  --warning-color: var(--warning-500);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--neutral-900);
}

h1 {
  font-size: 2rem;
}
h2 {
  font-size: 1.5rem;
}
h3 {
  font-size: 1.25rem;
}
h4 {
  font-size: 1.125rem;
}

/* App Container */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--neutral-50) 100%);
}

/* Auth Containers */
.container {
  display: none;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--neutral-200);
}

.container.active {
  display: block;
}

/* Logo and Branding */
.logo-container {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  color: white;
}

.logo-container h1 {
  color: white;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.logo {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  border: 3px solid rgba(255, 255, 255, 0.2);
  object-fit: cover;
}

/* Forms */
.login-form,
.register-form {
  padding: var(--spacing-xl);
}

.login-form h2,
.register-form h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--neutral-800);
  font-weight: 600;
}

/* Tabs */
.tabs {
  display: flex;
  margin-bottom: var(--spacing-lg);
  background: var(--neutral-100);
  border-radius: var(--radius-md);
  padding: 4px;
}

.tab-btn {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--neutral-600);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: white;
  color: var(--primary-600);
  box-shadow: var(--shadow-sm);
}

/* Form Elements */
.input-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--neutral-700);
  font-size: 13px;
  font-weight: 500;
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  font-size: 14px;
  transition: all 0.2s ease;
  background: white;
  color: var(--neutral-800);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

input::placeholder {
  color: var(--neutral-400);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  min-height: 44px;
}

.primary-btn,
.btn-primary {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  color: white;
  box-shadow: var(--shadow-sm);
}

.primary-btn:hover,
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-800) 100%);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.secondary-btn,
.btn-secondary {
  background: white;
  color: var(--neutral-700);
  border: 1.5px solid var(--neutral-200);
}

.secondary-btn:hover,
.btn-secondary:hover {
  background: var(--neutral-50);
  border-color: var(--neutral-300);
}

.danger-btn {
  background: linear-gradient(135deg, var(--error-500) 0%, var(--error-600) 100%);
  color: white;
}

.danger-btn:hover {
  background: linear-gradient(135deg, var(--error-600) 0%, var(--error-700) 100%);
  transform: translateY(-1px);
}

.warning-btn {
  background: linear-gradient(135deg, var(--warning-500) 0%, var(--warning-600) 100%);
  color: white;
}

.warning-btn:hover {
  background: linear-gradient(135deg, var(--warning-600) 0%, var(--warning-700) 100%);
  transform: translateY(-1px);
}

/* Messages */
.error-message {
  color: var(--error-600);
  background: var(--error-50);
  border: 1px solid var(--error-200);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 13px;
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.success-message {
  color: var(--success-600);
  background: var(--success-50);
  border: 1px solid var(--success-200);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 13px;
  text-align: center;
  margin-bottom: var(--spacing-md);
}

/* Waiter Interface */
#waiter-interface {
  max-width: 100%;
  padding: 0;
  box-shadow: none;
  background-color: transparent;
}

.header {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.header-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.user-name {
  font-weight: 500;
  font-size: 14px;
}

/* Floor Tabs */
.floor-tabs {
  display: flex;
  overflow-x: auto;
  background: white;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  z-index: 99;
  border-bottom: 1px solid var(--neutral-200);
  padding: 0 var(--spacing-md);
}

.floor-tab {
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  color: var(--neutral-600);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
  border-bottom: 3px solid transparent;
}

.floor-tab.active {
  color: var(--primary-600);
  border-bottom-color: var(--primary-600);
  background: var(--primary-50);
}

.floor-tab:hover:not(.active) {
  color: var(--neutral-800);
  background: var(--neutral-50);
}

/* Main Content */
.main-content {
  margin-top: 120px;
  padding: var(--spacing-lg);
  width: 100%;
  min-height: calc(100vh - 120px);
}

/* Tables Grid */
.tables-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--spacing-lg);
  width: 100%;
}

.table-item {
  aspect-ratio: 1;
  background: white;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--neutral-100);
  position: relative;
  overflow: hidden;
}

.table-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--success-500);
  transition: all 0.3s ease;
}

.table-item.occupied::before {
  background: var(--error-500);
}

.table-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-200);
}

.table-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-xs);
}

.table-status {
  font-size: 12px;
  font-weight: 500;
  color: var(--neutral-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table-item.occupied .table-status {
  color: var(--error-600);
}

/* Order Interface */
.order-interface {
  display: none;
  flex-direction: column;
  height: calc(100vh - 120px);
  width: 100%;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.order-interface.active {
  display: flex;
}

.order-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  background: var(--neutral-50);
  border-bottom: 1px solid var(--neutral-200);
}

.order-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--neutral-800);
}

.order-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Menu Categories */
.menu-categories {
  display: flex;
  overflow-x: auto;
  padding: var(--spacing-md);
  background: var(--neutral-50);
  border-bottom: 1px solid var(--neutral-200);
  gap: var(--spacing-sm);
}

.category-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  border: none;
  border-radius: var(--radius-lg);
  background: white;
  color: var(--neutral-600);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 80px;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--neutral-100);
}

.category-btn .material-icons {
  font-size: 24px;
  margin-bottom: var(--spacing-xs);
}

.category-btn .category-label {
  font-size: 12px;
  font-weight: 500;
}

.category-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-200);
}

.category-btn.active {
  background: var(--primary-600);
  color: white;
  border-color: var(--primary-600);
}

/* Menu Items */
.menu-items {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--spacing-md);
}

.menu-item {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  border: 2px solid var(--neutral-100);
}

.menu-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-200);
}

.item-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.item-name {
  font-weight: 600;
  color: var(--neutral-800);
  font-size: 14px;
  line-height: 1.3;
}

.item-price {
  color: var(--primary-600);
  font-weight: 600;
  font-size: 13px;
}

.item-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--primary-600);
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  opacity: 0;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-md);
}

.item-badge.visible {
  opacity: 1;
  transform: scale(1.1);
}

/* Order Summary */
.order-summary {
  background: var(--neutral-50);
  border-top: 1px solid var(--neutral-200);
  padding: var(--spacing-lg);
}

.order-items {
  margin-bottom: var(--spacing-md);
}

.order-total {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--neutral-800);
  text-align: right;
  padding: var(--spacing-md);
  background: white;
  border-radius: var(--radius-md);
  border: 2px solid var(--primary-100);
}

/* Owner Interface */
#owner-interface {
  max-width: 100%;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
  background: var(--background-color);
  padding: 0;
  margin: 0;
}

#owner-interface.active {
  display: grid !important;
}

.admin-sidebar {
  background: white;
  border-right: 1px solid var(--neutral-200);
  padding: var(--spacing-xl);
  height: 100vh;
  position: fixed;
  width: 280px;
  box-shadow: var(--shadow-sm);
  overflow-y: auto;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--neutral-200);
  margin-bottom: var(--spacing-xl);
}

.admin-brand img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.admin-brand h2 {
  color: var(--neutral-800);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.admin-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--neutral-600);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  font-size: 14px;
}

.menu-link:hover {
  background: var(--neutral-50);
  color: var(--neutral-800);
}

.menu-link.active {
  background: var(--primary-50);
  color: var(--primary-700);
  border-left: 3px solid var(--primary-600);
}

.menu-link .material-icons {
  font-size: 20px;
}

.admin-content {
  margin-left: 280px;
  padding: var(--spacing-xl);
  width: calc(100% - 280px);
  min-height: 100vh;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--neutral-200);
}

.page-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--neutral-900);
  margin: 0;
}

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

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-sm);
  line-height: 1;
}

.stat-label {
  color: var(--neutral-600);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-title {
  color: var(--neutral-900);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--neutral-200);
}

/* Tables */
.data-table {
  width: 100%;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--neutral-200);
}

.data-table th,
.data-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--neutral-100);
}

.data-table th {
  background: var(--neutral-50);
  font-weight: 600;
  color: var(--neutral-700);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.5px;
}

.data-table tr:hover {
  background: var(--neutral-50);
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* Action Icons */
.action-icons {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.action-icon {
  color: var(--neutral-400);
  cursor: pointer;
  transition: all 0.2s ease;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  font-size: 18px;
}

.edit-icon:hover {
  color: var(--primary-600);
  background: var(--primary-50);
}

.delete-icon:hover {
  color: var(--error-600);
  background: var(--error-50);
}

/* Status Badges */
.status-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
  display: inline-block;
}

.status-badge.pending {
  background: var(--warning-100);
  color: var(--warning-700);
}

.status-badge.completed {
  background: var(--success-100);
  color: var(--success-700);
}

.status-badge.cancelled {
  background: var(--error-100);
  color: var(--error-700);
}

.status-badge.in-progress {
  background: var(--primary-100);
  color: var(--primary-700);
}

.status-badge.active {
  background: var(--success-100);
  color: var(--success-700);
}

.status-badge.inactive {
  background: var(--neutral-100);
  color: var(--neutral-700);
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-content {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--neutral-200);
  background: var(--neutral-50);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--neutral-900);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  padding: var(--spacing-xl);
  background: var(--neutral-50);
  border-top: 1px solid var(--neutral-200);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
}

.close-modal {
  font-size: 24px;
  color: var(--neutral-400);
  cursor: pointer;
  transition: color 0.2s ease;
  line-height: 1;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
}

.close-modal:hover {
  color: var(--neutral-600);
  background: var(--neutral-100);
}

/* Form Styles */
.form-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--neutral-700);
  font-weight: 500;
  font-size: 14px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  font-size: 14px;
  transition: all 0.2s ease;
  background: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--neutral-500);
}

.empty-state .material-icons {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
  color: var(--neutral-400);
}

.empty-state h3 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  color: var(--neutral-700);
  font-weight: 600;
}

.empty-state p {
  margin-bottom: var(--spacing-lg);
  color: var(--neutral-500);
}

/* Loading States */
.loading {
  position: relative;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading::after {
  content: "";
  width: 2rem;
  height: 2rem;
  border: 2px solid var(--neutral-200);
  border-top-color: var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  #owner-interface {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: fixed;
    left: -280px;
    z-index: 1000;
    transition: left 0.3s ease;
  }

  .admin-sidebar.active {
    left: 0;
  }

  .admin-content {
    margin-left: 0;
    width: 100%;
    padding: var(--spacing-md);
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .tables-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
  }

  .menu-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .container {
    max-width: 100%;
    margin: var(--spacing-md);
    border-radius: var(--radius-lg);
  }

  .modal-content {
    width: 95%;
    margin: var(--spacing-md);
    border-radius: var(--radius-lg);
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.w-full {
  width: 100%;
}

.flex {
  display: flex;
}

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

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

.gap-2 {
  gap: var(--spacing-sm);
}

.gap-4 {
  gap: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-md);
}

.p-4 {
  padding: var(--spacing-md);
}

/* Additional Components */
.floors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.floor-card {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
  padding: var(--spacing-xl);
  transition: all 0.3s ease;
}

.floor-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.floor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.floor-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--neutral-800);
}

.floor-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Date Range Picker */
.date-range-picker {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}

.date-range-picker .btn-secondary {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 13px;
}

.date-range-picker .btn-secondary.active {
  background: var(--primary-600);
  color: white;
  border-color: var(--primary-600);
}

.date-inputs {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: var(--spacing-md);
  padding-left: var(--spacing-md);
  border-left: 1px solid var(--neutral-200);
}

.date-range-picker input[type="date"] {
  width: auto;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 13px;
}

/* Table Responsive */
.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-200);
}

/* Icon Buttons */
.icon-btn {
  padding: var(--spacing-sm);
  min-height: auto;
  width: auto;
  border-radius: var(--radius-sm);
}

/* Course Selector */
.course-selector {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: var(--neutral-50);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--neutral-200);
}

.course-indicator {
  font-weight: 600;
  color: var(--primary-600);
  font-size: 14px;
  background: var(--primary-50);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.add-course-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 13px;
}

/* Order Items */
.order-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--neutral-100);
  transition: background-color 0.2s ease;
}

.order-item:hover {
  background: var(--neutral-50);
}

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

.order-item-details {
  flex: 1;
}

.order-item-name {
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-xs);
}

.order-item-price {
  color: var(--neutral-600);
  font-size: 13px;
}

.order-item-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.quantity-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--neutral-200);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
  color: var(--neutral-600);
}

.quantity-btn:hover {
  background: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-600);
}

.quantity-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.quantity {
  font-weight: 600;
  min-width: 24px;
  text-align: center;
  color: var(--neutral-800);
}

/* Course Headers */
.course-header {
  background: var(--primary-50);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0 var(--spacing-sm);
  border-radius: var(--radius-md);
  font-weight: 600;
  color: var(--primary-700);
  font-size: 14px;
  border-left: 3px solid var(--primary-500);
}

/* Receipt Styles */
.receipt {
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  background: white;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-md);
  max-height: calc(100vh - 350px);
  overflow-y: auto;
}

.receipt-section {
  margin-bottom: var(--spacing-lg);
}

.receipt-section h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--primary-600);
  border-bottom: 2px solid var(--primary-600);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.receipt-course {
  margin-bottom: var(--spacing-md);
}

.receipt-course h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--neutral-700);
}

.receipt-item {
  display: flex;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px dotted var(--neutral-200);
  align-items: center;
}

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

.item-quantity {
  width: 40px;
  color: var(--neutral-600);
  font-weight: 500;
}

.item-name {
  flex: 1;
  color: var(--neutral-800);
}

.item-price {
  text-align: right;
  font-weight: 600;
  min-width: 80px;
  color: var(--neutral-800);
}

.receipt-total {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 2px solid var(--neutral-800);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--neutral-900);
}

/* Transfer Modal Enhancements */
.transfer-modal .modal-content {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.transfer-modal .items-list {
  background: var(--neutral-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  max-height: 50vh;
  overflow-y: auto;
  border: 1px solid var(--neutral-200);
}

.transfer-modal .item-row {
  background: white;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  border: 1px solid var(--neutral-100);
}

.transfer-modal .item-row:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-200);
}

.transfer-modal .item-row.selected {
  background: var(--primary-50);
  border-color: var(--primary-300);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  backdrop-filter: blur(4px);
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-lg);
}

.loading-text {
  color: white;
  font-size: 1.125rem;
  font-weight: 600;
}

/* Additional Mobile Optimizations */
@media (max-width: 480px) {
  .header {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header-title {
    font-size: 1.125rem;
  }

  .main-content {
    padding: var(--spacing-md);
    margin-top: 110px;
  }

  .tables-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-sm);
  }

  .table-number {
    font-size: 1.25rem;
  }

  .menu-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-sm);
  }

  .stats-grid {
    gap: var(--spacing-md);
  }

  .stat-card {
    padding: var(--spacing-lg);
  }

  .stat-value {
    font-size: 1.875rem;
  }
}

/* Print Styles */
@media print {
  .header,
  .floor-tabs,
  .order-actions,
  .btn,
  .modal {
    display: none !important;
  }

  .main-content {
    margin-top: 0;
  }

  .receipt {
    box-shadow: none;
    border: 1px solid #000;
  }
}