/* ========================================
   ACCESSIBILITY & PERFORMANCE OPTIMIZATION
   ======================================== */

/* Focus Visible for Keyboard Navigation */
:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Remove outline on mouse click but keep on keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* Ensure proper contrast ratios */
body {
  color: var(--text-primary);
  background-color: var(--primary-bg);
}

a {
  color: var(--accent-cyan);
}

a:visited {
  color: var(--accent-purple);
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-cyan);
  color: var(--primary-bg);
  padding: 8px;
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: more) {
  body {
    border: 1px solid var(--text-primary);
  }
  
  a {
    text-decoration: underline;
  }
}

/* Dark mode is default, but support light mode preference */
@media (prefers-color-scheme: light) {
  :root {
    --primary-bg: #ffffff;
    --text-primary: #000000;
    --text-secondary: #666666;
  }
}

/* Ensure text is readable at all times */
body {
  word-break: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Improve link underlines */
a {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* Better button styles */
button,
input[type="button"],
input[type="submit"] {
  font-family: inherit;
  font-size: inherit;
  padding: 0.8rem 1rem;
  min-height: 48px;
  min-width: 48px;
  cursor: pointer;
  border: 2px solid transparent;
}

button:focus-visible {
  outline: 2px solid var(--accent-cyan);
}

/* Better form inputs */
input,
textarea,
select {
  font-family: inherit;
  font-size: 16px; /* Prevents iOS zoom */
  border: 2px solid var(--border-glow);
  border-radius: 8px;
  padding: 0.8rem;
  min-height: 44px;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* Image alt text support */
img {
  max-width: 100%;
  height: auto;
}

/* Ensure headings are semantic */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: 1rem;
  margin-top: 1.5rem;
}

h1:first-child,
h2:first-child {
  margin-top: 0;
}

/* Lists should be readable */
ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Performance Optimization */

/* Use system fonts when available */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
}

/* Optimize font loading */
@font-face {
  font-display: swap; /* Show fallback while loading */
}

/* Enable GPU acceleration for animations */
.service-card,
.website-card,
.project-card,
.hosting-feature,
.country-card {
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Lazy loading for images */
img[loading="lazy"] {
  background-color: rgba(0, 0, 0, 0.1);
}

/* Optimize transitions */
* {
  transition-property: opacity, transform, background-color, color, border-color;
  transition-duration: 0.3s;
  transition-timing-function: ease-out;
}

/* Disable transitions during page load */
.preload * {
  transition: none !important;
}

/* Print styles for better printing */
@media print {
  body {
    background: white;
    color: black;
  }
  
  a {
    color: blue;
    text-decoration: underline;
  }
  
  a::after {
    content: " (" attr(href) ")";
  }
  
  nav,
  .mobile-menu,
  .cta-section,
  .quantum-buttons {
    display: none;
  }
  
  .container {
    max-width: 100%;
  }
}

/* Zoom support */
body {
  zoom: 1;
}

/* Proper line height for readability */
body {
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
}

/* Better list readability */
ul, ol {
  line-height: 1.8;
}

/* Ensure buttons don't wrap text unnecessarily */
button,
.btn-primary,
.cta-btn {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Performance: Reduce layout recalculations */
.fixed-width-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Smooth scrolling is enabled in base CSS */
html {
  scroll-behavior: smooth;
}

/* Optimize scrolling performance */
.scrollable-section {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
}

/* Better form styling for accessibility */
label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input[type="checkbox"],
input[type="radio"] {
  margin-right: 0.5rem;
  cursor: pointer;
  min-width: 20px;
  min-height: 20px;
}

/* Visible focus for all interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.5);
}

/* Better mobile input handling */
@media (max-width: 768px) {
  input,
  textarea,
  select {
    font-size: 16px; /* Prevents zoom on iOS */
    min-height: 44px;
  }
  
  button {
    min-height: 48px;
  }
}