/* ===================================
   Notification Toast
   =================================== */

.notification {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-lg);
  max-width: 400px;
  z-index: var(--z-toast);
  transform: translateX(120%);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  opacity: 0;
}

.notification.show {
  transform: translateX(0);
  opacity: 1;
}

.notification.hidden {
  transform: translateX(120%);
  opacity: 0;
}

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

.notification::before {
  content: '';
  width: 4px;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

/* Notification Types */
.notification--success {
  border-left-color: var(--success-color);
  background-color: rgba(16, 185, 129, 0.1);
}

.notification--success::before {
  background-color: var(--success-color);
}

.notification--error {
  border-left-color: var(--error-color);
  background-color: rgba(239, 68, 68, 0.1);
}

.notification--error::before {
  background-color: var(--error-color);
}

.notification--warning {
  border-left-color: var(--warning-color);
  background-color: rgba(245, 158, 11, 0.1);
}

.notification--warning::before {
  background-color: var(--warning-color);
}

.notification--info {
  border-left-color: var(--info-color);
  background-color: rgba(59, 130, 246, 0.1);
}

.notification--info::before {
  background-color: var(--info-color);
}

/* Mobile Notifications */
@media (max-width: 640px) {
  .notification {
    top: var(--spacing-md);
    right: var(--spacing-md);
    left: var(--spacing-md);
    max-width: none;
    transform: translateY(-120%);
  }
  
  .notification.show {
    transform: translateY(0);
  }
  
  .notification.hidden {
    transform: translateY(-120%);
  }
}

/* ===================================
   Modal System
   =================================== */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
  padding: var(--spacing-lg);
}

.modal:not(.hidden) {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 95vw;
  max-height: 95vh;
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
  width: 100%;
}

.modal:not(.hidden) .modal-content {
  transform: scale(1) translateY(0);
}

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

.modal-header h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin: 0;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition-all);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-body {
  padding: var(--spacing-xl);
  overflow-y: auto;
  max-height: calc(95vh - 80px);
}

/* Mobile Modal */
@media (max-width: 640px) {
  .modal {
    padding: var(--spacing-sm);
  }
  
  .modal-header {
    padding: var(--spacing-lg);
  }
  
  .modal-header h3 {
    font-size: var(--text-lg);
  }
  
  .modal-body {
    padding: var(--spacing-lg);
  }
}

/* ===================================
   Language Selector Enhancement
   =================================== */

.language-selector {
  position: relative;
}

.language-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition-all);
}

.language-toggle:hover,
.language-toggle:focus {
  background-color: var(--bg-tertiary);
  border-color: var(--border-secondary);
  color: var(--text-primary);
}

.language-current {
  font-weight: var(--font-semibold);
}

.language-arrow {
  transition: transform var(--transition-fast);
}

.language-selector:hover .language-arrow,
.language-toggle:focus + .language-dropdown .language-arrow {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: var(--spacing-xs);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: var(--spacing-sm);
  min-width: 140px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-all);
  z-index: var(--z-dropdown);
}

.language-selector:hover .language-dropdown,
.language-toggle:focus + .language-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-option {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: var(--transition-all);
}

.language-option:hover,
.language-option:focus {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
  text-decoration: none;
}

.language-option.active {
  color: var(--primary-color);
  background-color: var(--bg-secondary);
  font-weight: var(--font-medium);
}

/* ===================================
   Mobile Menu
   =================================== */

.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  padding: var(--spacing-xs);
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 2px 0;
  transition: var(--transition-all);
}

.mobile-menu-toggle:hover .hamburger-line {
  background-color: var(--primary-color);
}

/* Mobile Menu Active State */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===================================
   Loading States
   =================================== */

.loading {
  pointer-events: none;
  opacity: 0.6;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border-light);
  border-top: 2px solid var(--primary-color);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-light);
  border-top: 3px solid var(--primary-color);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-lg);
}

/* ===================================
   Form Enhancements
   =================================== */

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

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

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  background-color: var(--bg-primary);
  transition: var(--transition-all);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Form Validation */
.form-group input.error,
.form-group textarea.error,
.form-group select.error {
  border-color: var(--error-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group .error-message {
  color: var(--error-color);
  font-size: var(--text-sm);
  margin-top: var(--spacing-xs);
}

/* ===================================
   Utility Classes
   =================================== */

.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; }

.hidden { display: none !important; }
.invisible { visibility: hidden !important; }

.visible { visibility: visible !important; }

.fade-in {
  animation: fadeIn var(--transition-normal) ease-in-out;
}

.slide-up {
  animation: slideUp var(--transition-normal) ease-out;
}

.slide-down {
  animation: slideDown var(--transition-normal) ease-out;
}

.bounce {
  animation: bounce var(--transition-slow) ease-in-out;
}

/* ===================================
   Scrollbar Styling
   =================================== */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-secondary) var(--bg-secondary);
}

/* ===================================
   Focus Management
   =================================== */

.focus-trap {
  outline: none;
}

.focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--text-inverse);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--radius-sm);
  z-index: var(--z-tooltip);
  transition: top var(--transition-normal);
}

.skip-link:focus {
  top: 6px;
}

/* ===================================
   High Contrast Mode Support
   =================================== */

@media (prefers-contrast: high) {
  :root {
    --border-primary: #000000;
    --text-secondary: #000000;
    --bg-secondary: #ffffff;
  }
  
  .btn {
    border: 2px solid currentColor;
  }
  
  .product-card {
    border: 2px solid var(--text-primary);
  }
}

/* ===================================
   Print Styles
   =================================== */

@media print {
  .header,
  .nav,
  .cart-sidebar,
  .cart-overlay,
  .modal,
  .notification,
  .loading-screen,
  .search-filter,
  .load-more-container,
  .footer {
    display: none !important;
  }
  
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }
  
  .product-card {
    break-inside: avoid;
    border: 1px solid #ccc !important;
    margin-bottom: 1rem !important;
    page-break-inside: avoid;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
    page-break-inside: avoid;
  }
  
  img {
    max-width: 100% !important;
    height: auto !important;
  }
  
  a::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }
  
  a[href^="#"]::after {
    content: "";
  }
}