/* Accessibility Improvements */

/* Focus Styles */
*:focus {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

button:focus,
input:focus,
textarea:focus,
select:focus,
a:focus {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

/* Skip to main content link */
.skip-to-main {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--secondary);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 10000;
  transition: top 0.3s ease;
}

.skip-to-main:focus {
  top: 6px;
}

/* Screen reader only content */
.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;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .product-card {
    border: 2px solid #000;
  }
  
  .btn-add-cart, .btn-view-detail {
    border: 2px solid #000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .product-card:hover {
    transform: none;
  }
  
  .btn-add-cart:hover, .btn-view-detail:hover {
    transform: none;
  }
}

/* Improved color contrast */
.product-title {
  color: #1a1a1a; /* Darker for better contrast */
}

.stock-available {
  color: #1d6b3d; /* Darker green for better contrast */
}

.stock-unavailable {
  color: #a02c2c; /* Darker red for better contrast */
}

/* Better form labels */
.form-group label {
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
  color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
  border: 2px solid #e0e0e0;
  border-radius: 6px;
  padding: 12px;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(236, 28, 36, 0.1);
}

/* Error states */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: #dc3545;
  background-color: #fff5f5;
}

.form-group.error .error-message {
  color: #dc3545;
  font-size: 14px;
  margin-top: 4px;
  display: block;
}

/* Success states */
.form-group.success input,
.form-group.success select,
.form-group.success textarea {
  border-color: #28a745;
  background-color: #f8fff8;
}

/* Loading indicators with accessibility */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--secondary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-spinner[aria-hidden="true"] + .loading-text {
  visibility: hidden;
}

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

/* Toast notifications */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  padding: 16px;
  max-width: 350px;
  z-index: 10000;
  transform: translateX(400px);
  transition: transform 0.3s ease;
}

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

.toast[role="alert"] {
  border-left: 4px solid var(--secondary);
}

.toast[role="status"] {
  border-left: 4px solid #28a745;
}

/* Keyboard navigation improvements */
.keyboard-nav .product-card:focus {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 12px 35px rgba(236, 28, 36, 0.3);
}

/* Table accessibility */
table {
  border-collapse: collapse;
  width: 100%;
}

th, td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #e0e0e0;
}

th {
  background-color: #f8f9fa;
  font-weight: 600;
  color: #2c3e50;
}

caption {
  font-size: 14px;
  color: #6c757d;
  text-align: left;
  margin-bottom: 8px;
  font-style: italic;
}

/* Link improvements */
a:not([class]) {
  color: var(--secondary);
  text-decoration: underline;
  transition: all 0.2s ease;
}

a:not([class]):hover,
a:not([class]):focus {
  color: #c0392b;
  text-decoration: none;
}

/* Button improvements */
button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

button[disabled]:hover {
  transform: none;
  box-shadow: none;
}

/* Modal accessibility */
.modal[aria-hidden="false"] {
  display: block;
}

.modal[aria-hidden="true"] {
  display: none;
}

.modal-overlay {
  background: rgba(0, 0, 0, 0.5);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
}

/* Image accessibility */
img[alt=""] {
  border: 2px dashed #dc3545;
}

img:not([alt]) {
  border: 2px dashed #ffc107;
}

/* Responsive accessibility */
@media (max-width: 768px) {
  .skip-to-main {
    left: 10px;
    top: -50px;
  }
  
  .skip-to-main:focus {
    top: 10px;
  }
  
  .toast {
    left: 20px;
    right: 20px;
    max-width: none;
    transform: translateY(100px);
  }
  
  .toast.show {
    transform: translateY(0);
  }
}