/* Base Styles */
* { 
  box-sizing: border-box; 
}

html, body { 
  height: 100%; 
}

body {
  margin: 0;
  background: radial-gradient(1200px 800px at 80% -100px, rgba(56,189,248,.15), transparent 60%),
              radial-gradient(1000px 600px at -10% -40%, rgba(110,231,183,.12), transparent 60%),
              var(--bg);
  color: var(--text);
  font: 15px/1.55 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* Light theme background */
[data-theme="light"] body {
  background: radial-gradient(1200px 800px at 80% -100px, rgba(14,165,233,.08), transparent 60%),
              radial-gradient(1000px 600px at -10% -40%, rgba(5,150,105,.06), transparent 60%),
              var(--bg);
}

/* Enhanced Responsive Base Styles */
html {
  /* Prevent zoom on input focus on iOS */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Ensure proper touch targets on mobile */
button, 
input, 
select, 
textarea,
a {
  /* min-height: 44px; iOS recommended touch target */
  min-width: 44px;
}

/* Improve text rendering on all devices */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Enhanced focus styles for accessibility */
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* Enhanced Error Validation Styles */
.input.error, select.error, textarea.error {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.2) !important;
  animation: error-shake 0.4s ease-in-out;
}

.input.error:focus, select.error:focus, textarea.error:focus {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.3) !important;
}

/* Form shake animation */
.shake-error {
  animation: shake 0.6s ease-in-out;
}

/* Button error pulse animation */
.btn.error-pulse {
  animation: error-pulse 0.6s ease-in-out;
}

/* Error shake keyframes */
@keyframes error-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* Form shake keyframes */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-8px); }
  20%, 40%, 60%, 80% { transform: translateX(8px); }
}

/* Button error pulse keyframes */
@keyframes error-pulse {
  0% { 
    background: var(--primary);
    transform: scale(1);
  }
  50% { 
    background: #ef4444;
    transform: scale(1.02);
  }
  100% { 
    background: var(--primary);
    transform: scale(1);
  }
}

/* Error label styling */
.input.error + .error-message,
select.error + .error-message,
textarea.error + .error-message {
  display: block;
  color: #ef4444;
  font-size: 12px;
  margin-top: 4px;
  font-weight: 500;
  animation: fade-in 0.3s ease-in-out;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Prevent horizontal scroll on small devices */
html, body {
  overflow-x: hidden;
}

/* Responsive images */
img {
  max-width: 100%;
  height: auto;
}

/* Utility Classes */
.container { 
  max-width: 1200px; 
  margin: 0 auto; 
  padding: 0 16px; 
}

.hidden { 
  display: none !important; 
}

.muted { 
  color: var(--muted); 
  font-size: 13px; 
}

/* Button Styles */
.btn { 
  cursor: pointer; 
  border: 0; 
  border-radius: 12px; 
  padding: 10px 14px; 
  font-weight: 600; 
  color: white; 
  background: var(--primary); 
  transition: transform .06s ease, filter .2s ease; 
}

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

.btn:active { 
  transform: translateY(1px) scale(.99); 
}

.btn:disabled { 
  opacity: 0.5; 
  cursor: not-allowed; 
  pointer-events: none;
}

.btn.loading {
  position: relative;
  color: transparent !important;
}

.btn.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.btn.loading::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: inherit;
  border-radius: inherit;
  opacity: 0.8;
}

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

.btn.secondary { 
  background: var(--panel-2); 
  color: var(--text); 
  border: 1px solid var(--border); 
}

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

.btn.ghost { 
  background: transparent; 
  color: var(--text); 
  border: 1px solid var(--border); 
}

.btn.ghost:hover {
  background: var(--panel);
}

.btn.danger { 
  background: #ef4444; 
  color: white; 
  border: 1px solid #dc2626; 
}

.btn.danger:hover {
  background: #dc2626;
}

/* Badge */
.badge { 
  background: #232730; 
  color: var(--text); 
  border: 1px solid #2b3140; 
  border-radius: 999px; 
  padding: 4px 10px; 
  font-size: 12px; 
}

/* Light mode badge styles */
[data-theme="light"] .badge {
  background: #f1f5f9;
  color: #334155;
  border-color: #e2e8f0;
}

.pill { 
  border-radius: 999px; 
}

/* Form Elements */
.input, select { 
  width: 100%; 
  background: var(--panel); 
  color: var(--text); 
  border: 1px solid var(--border); 
  border-radius: 12px; 
  padding: 10px 12px; 
  outline: none; 
  transition: border .2s ease, box-shadow .2s ease; 
}

.input:focus, select:focus { 
  border-color: var(--primary); 
  box-shadow: 0 0 0 4px rgba(56,189,248,.1); 
}

.input.error {
  border-color: var(--error) !important;
  box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.2) !important;
}

.range { 
  appearance: none; 
  width: 100%; 
  height: 6px; 
  border-radius: 999px; 
  background: var(--border); 
  outline: none; 
}

.range::-webkit-slider-thumb { 
  appearance: none; 
  width: 18px; 
  height: 18px; 
  border-radius: 50%; 
  background: var(--primary); 
  cursor: pointer; 
  box-shadow: 0 0 0 4px rgba(56,189,248,.25); 
  border: 2px solid var(--bg); 
}

/* Enhanced Toast Styles */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100%);
  background: var(--panel);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 10001;
  opacity: 0;
  transition: all 0.3s ease;
  border-left: 4px solid var(--primary);
  font-weight: 500;
  max-width: 400px;
  text-align: center;
}

.toast.success {
  border-left-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

.toast.error {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
}

.toast.warning {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

.toast.info {
  border-left-color: var(--primary);
  background: var(--primary-color-light);
  color: var(--primary);
}

/* Dark theme toast adjustments */
[data-theme="dark"] .toast.success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

[data-theme="dark"] .toast.error {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

[data-theme="dark"] .toast.warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
}

/* Footer */
footer { 
  margin: 40px 0; 
  color: var(--muted); 
  text-align: center; 
}

/* Dynamic Categories Styles */
.loading-placeholder {
  color: var(--muted-color);
  font-style: italic;
  opacity: 0.7;
  animation: pulse 1.5s ease-in-out infinite;
}

.footer-category-link {
  color: var(--text-color);
  text-decoration: none;
  transition: all 0.2s ease;
  position: relative;
  display: inline-block;
}

.footer-category-link:hover {
  color: var(--primary-color);
  transform: translateX(2px);
}

.footer-category-link.active {
  color: var(--primary-color);
  font-weight: 500;
}

.footer-category-link.active::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 50%;
}

/* Loading animation for categories */
@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* Category error state */
.category-error {
  color: var(--error-color);
  font-size: 0.9rem;
  padding: 0.5rem;
  background: rgba(244, 67, 54, 0.1);
  border-radius: 4px;
  margin: 0.5rem 0;
}

/* Category refresh button */
.category-refresh-btn {
  background: none;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  font-size: 0.8rem;
  text-decoration: underline;
  padding: 0;
  margin-left: 0.5rem;
}

.category-refresh-btn:hover {
  color: var(--accent-color);
}

/* View All Categories link */
.view-all-categories {
  font-style: italic;
  opacity: 0.8;
  border-top: 1px solid var(--border-color);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
}

.view-all-categories:hover {
  opacity: 1;
}

/* Categories Modal */
.categories-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.categories-modal.active {
  opacity: 1;
  visibility: visible;
}

.categories-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.categories-modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  /* background: var(--surface-color); */
  background: var(--panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  max-width: 600px;
  width: 90vw;
  max-height: 80vh;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.categories-modal.active .categories-modal-content {
  transform: translate(-50%, -50%) scale(1);
}

.categories-modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.categories-modal-header h3 {
  margin: 0;
  color: var(--text-color);
  font-size: 1.25rem;
}

.categories-modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--muted-color);
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  transition: color 0.2s ease;
}

.categories-modal-close:hover {
  color: var(--text-color);
}

.categories-modal-body {
  padding: 1.5rem;
  max-height: 60vh;
  overflow-y: auto;
  
  /* Custom white/light scrollbar */
  scrollbar-width: thin;
  scrollbar-color: #424141 #f1f5f9;
}

/* Webkit scrollbar styling for white theme */
.categories-modal-body::-webkit-scrollbar {
  width: 8px;
}

.categories-modal-body::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 4px;
}

.categories-modal-body::-webkit-scrollbar-thumb {
  background: #ffffff;
  border-radius: 4px;
  border: 1px solid #e2e8f0;
}

.categories-modal-body::-webkit-scrollbar-thumb:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}

/* Dark theme scrollbar (optional - maintains current behavior) */
[data-theme="dark"] .categories-modal-body {
  scrollbar-color: #374151 #1f2937;
}

[data-theme="dark"] .categories-modal-body::-webkit-scrollbar-track {
  background: #1f2937;
}

[data-theme="dark"] .categories-modal-body::-webkit-scrollbar-thumb {
  background: #374151;
  border-color: #4b5563;
}

[data-theme="dark"] .categories-modal-body::-webkit-scrollbar-thumb:hover {
  background: #4b5563;
  border-color: #6b7280;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.category-item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.category-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.category-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  text-decoration: none;
  color: var(--text-color);
  transition: all 0.2s ease;
}

.category-link:hover {
  color: var(--primary-color);
  background: var(--primary-color-light);
}

.category-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

.category-name {
  font-weight: 500;
  text-align: center;
  font-size: 0.9rem;
}

/* Mobile responsiveness for modal */
@media (max-width: 768px) {
  .categories-modal-content {
    width: 95vw;
    max-height: 85vh;
  }
  
  .categories-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
  }
  
  .category-link {
    padding: 1rem 0.75rem;
  }
  
  .category-icon {
    font-size: 1.5rem;
  }
  
  .category-name {
    font-size: 0.8rem;
  }
}

/* Device-specific optimizations */
@media (max-width: 480px) {
  /* Increase touch targets on very small screens */
  .btn {
    min-height: 48px;
    padding: 12px 16px;
  }
  
  /* Improve readability */
  body {
    font-size: 16px; /* Prevent zoom on iOS */
  }
  
  /* Optimize container padding */
  .container {
    padding: 0 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* Respect user preference for reduced motion */
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Dark mode optimizations for PWA */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border: #fff;
    --text: #fff;
    --bg: #000;
  }
}

/* Enhanced Checkout Modal Styling */
#checkoutModal {
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(8px);
  background: var(--panel);
  max-width: 500px;
  width: 90vw;
}

#checkoutModal::backdrop {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.modal-head h3 {
  color: var(--text);
  font-size: 1.5rem;
  font-weight: 600;
}

.modal-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}

.modal-grid > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-grid label.muted {
  font-weight: 500;
  font-size: 14px;
}

/* Enhanced button styling for modal */
#checkoutModal .btn {
  padding: 12px 20px;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
}

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

#checkoutModal .btn.primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

#checkoutModal .btn.secondary {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
}

#checkoutModal .btn.secondary:hover {
  background: var(--border);
  transform: translateY(-1px);
}

/* Responsive modal styling */
@media (max-width: 600px) {
  #checkoutModal {
    width: 95vw;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .modal-grid {
    gap: 14px;
  }
  
  #checkoutModal .btn {
    padding: 14px 18px;
    font-size: 16px; /* Prevent zoom on mobile */
  }
}

/* Print styles optimization */
@media print {
  /* Hide unnecessary elements when printing */
  .navbar,
  .drawer,
  .drawer-backdrop,
  .toast,
  .cart-btn,
  .theme-toggle {
    display: none !important;
  }
  
  /* Optimize for print */
  body {
    font-size: 12pt;
    line-height: 1.4;
    color: #000;
    background: #fff;
  }
  
  .container {
    max-width: none;
    padding: 0;
  }
}