/* ===== CSS VARIABLES & THEME ===== */
:root {
  /* Primary Colors */
  --primary-color: #8B4513;
  --primary-light: #A0522D;
  --primary-dark: #654321;
  --secondary-color: #D2691E;
  --accent-color: #CD853F;
  
  /* Background Colors */
  --bg-primary: #FFF8DC;
  --bg-secondary: #FFFAF0;
  --bg-card: #FFFFFF;
  --bg-overlay: rgba(0, 0, 0, 0.5);
  
  /* Text Colors */
  --text-primary: #2F1B14;
  --text-secondary: #5D4037;
  --text-muted: #8D6E63;
  --text-light: #FFFFFF;
  
  /* Border & Shadow */
  --border-color: #E0E0E0;
  --border-radius: 12px;
  --border-radius-sm: 6px;
  --border-radius-lg: 20px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-modal: 2000;
  --z-toast: 3000;
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: var(--z-modal);
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== MAIN CONTAINER ===== */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  background: var(--bg-card);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  min-height: 100vh;
}

/* ===== HEADER ===== */
.header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--text-light);
  padding: var(--spacing-lg) var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.logo-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
}

.logo {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--text-light);
  box-shadow: var(--shadow-sm);
}

.bar-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.bar-description {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  font-weight: 300;
}

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

/* Language Toggle */
.language-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  padding: var(--spacing-xs);
  backdrop-filter: blur(10px);
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background: transparent;
  color: var(--text-light);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: var(--font-size-sm);
}

.lang-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
  background: var(--text-light);
  color: var(--primary-color);
  font-weight: 600;
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-light);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition-normal);
  font-size: var(--font-size-sm);
  backdrop-filter: blur(10px);
}

.action-btn:hover {
  background: var(--text-light);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== NAVIGATION ===== */
.category-nav {
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 120px;
  z-index: 90;
}

.nav-container {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding-bottom: var(--spacing-xs);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-container::-webkit-scrollbar {
  display: none;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: var(--transition-normal);
  font-size: var(--font-size-sm);
  font-weight: 500;
  white-space: nowrap;
  min-width: fit-content;
}

.nav-btn:hover {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.nav-btn.active {
  border-color: var(--primary-color);
  background: var(--primary-color);
  color: var(--text-light);
  box-shadow: var(--shadow-sm);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  padding: var(--spacing-xl) var(--spacing-md);
  min-height: 60vh;
}

.menu-container {
  display: grid;
  gap: var(--spacing-2xl);
}

/* Category Section */
.category-section {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

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

.category-header {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
  color: var(--text-light);
  padding: var(--spacing-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-fast);
}

.category-header:hover {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
}

.category-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.category-icon {
  font-size: var(--font-size-2xl);
}

.category-toggle {
  font-size: var(--font-size-lg);
  transition: var(--transition-fast);
}

.category-toggle.collapsed {
  transform: rotate(-90deg);
}

/* Items Grid */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.menu-item {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-normal);
  cursor: pointer;
  border: 1px solid var(--border-color);
}

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

.item-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.menu-item:hover .item-image {
  transform: scale(1.05);
}

.item-content {
  padding: var(--spacing-lg);
}

.item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
}

.item-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.item-price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
  white-space: nowrap;
}

.item-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  margin-bottom: var(--spacing-md);
}

.item-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.item-allergens {
  display: flex;
  gap: var(--spacing-xs);
}

.allergen-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
}

.item-availability {
  font-weight: 500;
}

.item-availability.available {
  color: #4CAF50;
}

.item-availability.unavailable {
  color: #F44336;
}

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

.empty-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.empty-state h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--primary-dark);
  color: var(--text-light);
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: auto;
}

.footer-content {
  display: grid;
  gap: var(--spacing-lg);
  text-align: center;
}

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

.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.contact-icon {
  font-size: var(--font-size-lg);
}

.contact-link {
  color: var(--text-light);
  text-decoration: none;
  transition: var(--transition-fast);
}

.contact-link:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

.footer-actions {
  display: flex;
  justify-content: center;
}

.scroll-top-btn {
  background: var(--accent-color);
  color: var(--text-light);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.scroll-top-btn:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
}

.footer-info {
  font-size: var(--font-size-xs);
  opacity: 0.8;
}

.powered-by {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

/* ===== MODALS ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
  z-index: var(--z-modal);
  backdrop-filter: blur(5px);
}

.modal.active {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.modal-header h3 {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition-fast);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.modal-close:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

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

/* Admin Modal Specific */
.admin-modal-content {
  max-width: 800px;
}

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

.admin-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  color: var(--primary-color);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-content {
  display: none;
}

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

.json-editor textarea {
  width: 100%;
  height: 400px;
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  resize: vertical;
}

/* QR Code Modal */
.qr-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.qr-instructions {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.qr-url {
  display: flex;
  gap: var(--spacing-sm);
}

.qr-url input {
  flex: 1;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
}

.copy-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--primary-color);
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
  text-align: center;
  justify-content: center;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-success {
  background: #4CAF50;
  color: var(--text-light);
}

.btn-success:hover {
  background: #45a049;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-warning {
  background: #FF9800;
  color: var(--text-light);
}

.btn-warning:hover {
  background: #F57C00;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-info {
  background: #2196F3;
  color: var(--text-light);
}

.btn-info:hover {
  background: #1976D2;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  transform: translateX(400px);
  transition: var(--transition-normal);
}

.toast.show {
  transform: translateX(0);
}

.toast-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: var(--font-size-lg);
  cursor: pointer;
  opacity: 0.8;
  transition: var(--transition-fast);
}

.toast-close:hover {
  opacity: 1;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Mobile First - Base styles above are for mobile */

/* Small Mobile (320px+) */
@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .logo-section {
    justify-content: center;
  }
  
  .header-controls {
    flex-direction: column;
    width: 100%;
  }
  
  .action-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .items-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    gap: var(--spacing-md);
  }
  
  .contact-item {
    flex-direction: column;
    text-align: center;
  }
}

/* Tablet (768px+) */
@media (min-width: 768px) {
  .header {
    padding: var(--spacing-xl) var(--spacing-lg);
  }
  
  .main-content {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }
  
  .items-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
  
  .footer-content {
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    text-align: left;
  }
  
  .footer-actions {
    justify-content: center;
  }
  
  .footer-info {
    text-align: right;
  }
  
  .contact-info {
    flex-direction: row;
    gap: var(--spacing-lg);
  }
  
  .contact-item {
    justify-content: flex-start;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  .app-container {
    margin: var(--spacing-lg) auto;
    border-radius: var(--border-radius-lg);
  }
  
  .items-grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  }
  
  .modal-content {
    max-width: 600px;
  }
  
  .admin-modal-content {
    max-width: 900px;
  }
}

/* Large Desktop (1200px+) */
@media (min-width: 1200px) {
  .items-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== UTILITY CLASSES ===== */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

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

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

.fade-in {
  animation: fadeIn 0.5s ease;
}

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

.slide-up {
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .header-controls,
  .category-nav,
  .footer-actions,
  .action-btn,
  .modal {
    display: none !important;
  }
  
  .app-container {
    box-shadow: none;
    border-radius: 0;
  }
  
  .menu-item {
    break-inside: avoid;
    page-break-inside: avoid;
  }
  
  .category-section {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}