/* ==============================================
   ACCESSIBILITY ENHANCEMENTS
   WCAG 2.1 AA Compliant Styles
   ============================================== */

/* ===== SKIP NAVIGATION ===== */
.skip-nav {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
  z-index: var(--z-max);
  transition: top var(--transition-fast);
  border: 2px solid transparent;
}

.skip-nav:focus {
  top: var(--space-4);
  outline: none;
  border-color: var(--color-white);
}

/* ===== FOCUS MANAGEMENT ===== */
/* Enhanced focus indicators for better visibility */
.focus-enhanced:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-base);
  box-shadow: 0 0 0 2px var(--color-white), 0 0 0 5px var(--color-primary);
}

/* Special focus for dark backgrounds */
.dark-bg .focus-enhanced:focus-visible,
.dark-bg button:focus-visible,
.dark-bg a:focus-visible {
  outline-color: var(--color-white);
  box-shadow: 0 0 0 2px var(--color-black), 0 0 0 5px var(--color-white);
}

/* Remove focus outline for mouse users */
.js-focus-visible .focus-enhanced:focus:not(.focus-visible),
.js-focus-visible button:focus:not(.focus-visible),
.js-focus-visible a:focus:not(.focus-visible) {
  outline: none;
  box-shadow: none;
}

/* ===== HIGH CONTRAST MODE ===== */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #FF4500;
    --color-secondary: #0066CC;
    --color-gray-300: #CCCCCC;
    --color-gray-600: #333333;
  }
  
  /* Enhanced button contrast */
  .btn-primary {
    background: var(--color-primary);
    border: 3px solid var(--color-white);
    color: var(--color-white);
  }
  
  .btn-secondary {
    background: var(--color-secondary);
    border: 3px solid var(--color-white);
    color: var(--color-white);
  }
  
  /* Enhanced form contrast */
  .form-input {
    border-width: 3px;
    border-color: var(--color-gray-600);
    background: var(--color-white);
    color: var(--color-black);
  }
  
  .form-input:focus {
    border-color: var(--color-primary);
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
  }
  
  /* Enhanced text contrast */
  .text-primary {
    color: var(--color-primary);
    text-shadow: 1px 1px 0 var(--color-white);
  }
  
  /* Enhanced navigation dots */
  #nav-dots button {
    border: 2px solid var(--color-white) !important;
    background-color: var(--color-gray-600) !important;
  }
  
  #nav-dots button.bg-white {
    background-color: var(--color-primary) !important;
  }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  /* Disable floating animation */
  .hero-logo {
    animation: none;
  }
  
  /* Disable sliding animations */
  .order-2 img,
  .sliding-nati-image {
    transition: none;
    transform: none !important;
  }
  
  /* Disable carousel transitions */
  .testimonial-slide {
    transition: none;
  }
  
  /* Static positioning for reduced motion */
  .services-section.active .sliding-nati-image {
    opacity: 0.7;
    transform: translateY(-50%) translateX(-20%);
  }
}

/* ===== FONT SIZE ADJUSTMENTS ===== */
/* Support for user font size preferences */
@media (min-resolution: 1.5dppx) {
  body {
    font-size: calc(1rem + 0.1vw);
  }
}

/* Font size controls via CSS custom properties */
.font-size-small {
  font-size: calc(var(--font-size-base) * 0.875);
}

.font-size-normal {
  font-size: var(--font-size-base);
}

.font-size-large {
  font-size: calc(var(--font-size-base) * 1.125);
}

.font-size-extra-large {
  font-size: calc(var(--font-size-base) * 1.25);
}

/* ===== COLOR BLIND ACCESSIBILITY ===== */
/* Enhanced color differentiation */
.error-state {
  background-color: var(--color-error);
  border-left: 4px solid #8B0000; /* Darker red border */
}

.success-state {
  background-color: var(--color-success);
  border-left: 4px solid #006400; /* Darker green border */
}

.warning-state {
  background-color: var(--color-warning);
  border-left: 4px solid #B8860B; /* Darker yellow border */
}

/* Pattern overlays for color blind users */
.error-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 4px,
    rgba(139, 0, 0, 0.1) 4px,
    rgba(139, 0, 0, 0.1) 8px
  );
  pointer-events: none;
}

/* ===== SCREEN READER ENHANCEMENTS ===== */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Live region for dynamic content announcements */
.live-region {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ===== TOUCH TARGET OPTIMIZATION ===== */
/* Ensure all interactive elements meet minimum touch target size */
@media (pointer: coarse) {
  button,
  a,
  input,
  select,
  textarea,
  .clickable {
    min-height: 44px;
    min-width: 44px;
    padding: max(var(--space-2), calc((44px - 1em) / 2)) var(--space-3);
  }
  
  /* Navigation dots touch targets */
  #nav-dots button {
    min-width: 44px !important;
    min-height: 44px !important;
    padding: var(--space-2) !important;
  }
  
  /* Carousel navigation touch targets */
  .carousel-nav {
    min-width: 48px;
    min-height: 48px;
  }
}

/* ===== DYSLEXIA-FRIENDLY ENHANCEMENTS ===== */
.dyslexia-friendly {
  font-family: 'OpenDyslexic', 'Arial', sans-serif;
  letter-spacing: 0.05em;
  word-spacing: 0.1em;
  line-height: 1.6;
}

.dyslexia-friendly h1,
.dyslexia-friendly h2,
.dyslexia-friendly h3 {
  margin-bottom: 1em;
}

.dyslexia-friendly p {
  margin-bottom: 1.2em;
  max-width: 70ch; /* Optimal reading width */
}

/* ===== ENHANCED FORM ACCESSIBILITY ===== */
.form-group {
  position: relative;
  margin-bottom: var(--space-6);
}

/* Enhanced label positioning */
.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

/* Required field indicators */
.form-label.required::after {
  content: ' *';
  color: var(--color-error);
  font-weight: var(--font-weight-bold);
}

/* Error states with proper contrast */
.form-input.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

.form-input.error + .error-message {
  display: block;
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
  font-weight: var(--font-weight-semibold);
}

.error-message {
  display: none;
}

/* ===== KEYBOARD NAVIGATION ENHANCEMENTS ===== */
/* Visual indicator for keyboard navigation */
.keyboard-nav-active .focus-visible:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-base);
}

/* Enhanced tab order visibility */
.tab-highlight {
  position: relative;
}

.tab-highlight::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast);
}

.tab-highlight:focus-visible::before {
  border-color: var(--color-primary);
}

/* ===== PRINT ACCESSIBILITY ===== */
@media print {
  /* Ensure sufficient contrast for printing */
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  a,
  a:visited {
    text-decoration: underline;
    color: black !important;
  }
  
  /* Show URL for links */
  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
  
  /* Hide interactive elements that don't work in print */
  button,
  .btn,
  video,
  .carousel-nav,
  #nav-dots,
  #accessibility-floating-menu {
    display: none !important;
  }
  
  /* Ensure headings break properly */
  h1, h2, h3, h4, h5, h6 {
    break-after: avoid;
    page-break-after: avoid;
  }
  
  /* Avoid breaking inside content blocks */
  .section,
  .service-card,
  .testimonial-slide {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}

/* ===== ENHANCED ERROR HANDLING ===== */
.error-boundary {
  padding: var(--space-6);
  border: 2px solid var(--color-error);
  border-radius: var(--radius-lg);
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  text-align: center;
}

.error-boundary h2 {
  color: var(--color-error);
  margin-bottom: var(--space-4);
}

.error-boundary button {
  background: var(--color-error);
  color: var(--color-white);
  border: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-base);
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
}

/* ===== LOADING STATES ACCESSIBILITY ===== */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  margin-top: var(--space-4);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

/* Hide spinner from screen readers, announce loading text */
.loading-spinner {
  aria-hidden: true;
}

.loading-text {
  live: polite;
  atomic: true;
}