harden

/* Single line with ellipsis */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Multi-line with clamp */
.line-clamp {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Allow wrapping */
.wrap {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Prevent flex items from overflowing */
.flex-item {
  min-width: 0; /* Allow shrinking below content size */
  overflow: hidden;
}

/* Prevent grid items from overflowing */
.grid-item {
  min-width: 0;
  min-height: 0;
}

// ❌ Bad: Assumes short English text
<button className="w-24">Submit</button>

// ✅ Good: Adapts to content
<button className="px-4 py-2">Submit</button>

/* Use logical properties */
margin-inline-start: 1rem; /* Not margin-left */
padding-inline: 1rem; /* Not padding-left/right */
border-inline-end: 1px solid; /* Not border-right */

/* Or use dir attribute */
[dir="rtl"] .arrow { transform: scaleX(-1); }

// ✅ Use Intl API for proper formatting
new Intl.DateTimeFormat('en-US').format(date); // 1/15/2024
new Intl.DateTimeFormat('de-DE').format(date); // 15.1.2024

new Intl.NumberFormat('en-US', { 
  style: 'currency', 
  currency: 'USD' 
}).format(1234.56); // $1,234.56

// ❌ Bad: Assumes English pluralization
`${count} item${count !== 1 ? 's' : ''}`

// ✅ Good: Use proper i18n library
t('items', { count }) // Handles complex plural rules

// Error states with recovery
{error && (
  <ErrorMessage>
    <p>Failed to load data. {error.message}</p>
    <button onClick={retry}>Try again</button>
  </ErrorMessage>
)}

<!-- Set clear constraints -->
<input 
  type="text"
  maxlength="100"
  pattern="[A-Za-z0-9]+"
  required
  aria-describedby="username-hint"
/>
<small id="username-hint">
  Letters and numbers only, up to 100 characters
</small>

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

// Debounce search input
const debouncedSearch = debounce(handleSearch, 300);

// Throttle scroll handler
const throttledScroll = throttle(handleScroll, 100);