@tailwind base;
@tailwind components;
@tailwind utilities;

/* Accessibility Styles */

/* 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;
}

/* Screen reader only content that becomes visible on focus */
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  padding: inherit;
  margin: inherit;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Skip links */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: #000;
  color: #fff;
  padding: 8px;
  text-decoration: none;
  z-index: 9999;
  border-radius: 4px;
  transition: top 0.3s;
}

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

/* Enhanced focus styles */
.focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* High contrast mode styles */
.high-contrast {
  --tw-bg-opacity: 1;
  --tw-text-opacity: 1;
}

.high-contrast * {
  border-color: currentColor !important;
}

.high-contrast button,
.high-contrast input,
.high-contrast select,
.high-contrast textarea {
  border: 2px solid currentColor !important;
}

.high-contrast a {
  text-decoration: underline !important;
}

/* Reduced motion styles */
.reduce-motion *,
.reduce-motion *::before,
.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

/* Better focus management for modals */
.modal-open {
  overflow: hidden;
}

/* Improved button contrast */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

/* Enhanced error state styles */
input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: #ef4444;
  box-shadow: 0 0 0 1px #ef4444;
}

/* Better spacing for form elements */
label + input,
label + select,
label + textarea {
  margin-top: 0.25rem;
}

/* Improved link styling */
a:not(.btn):not(.button) {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:not(.btn):not(.button):hover {
  text-decoration-thickness: 2px;
}

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

th {
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid #e5e7eb;
  padding: 0.75rem;
}

td {
  border-bottom: 1px solid #e5e7eb;
  padding: 0.75rem;
}

/* Status indicators */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.status-indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: currentColor;
}

/* Loading states */
.loading {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Ensure sufficient color contrast */
.text-slate-500 {
  color: #64748b; /* Improved contrast */
}

.text-slate-600 {
  color: #475569; /* Improved contrast */
}

/* Better button states */
button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Keyboard-only focus for better UX */
@media (hover: hover) {
  .focus\:outline-none:focus:not(:focus-visible) {
    outline: none;
  }
}

/* Custom checkbox and radio styles for better accessibility */
input[type="checkbox"],
input[type="radio"] {
  width: 1rem;
  height: 1rem;
  margin-right: 0.5rem;
}

/* Better error message styling */
.error-message {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.error-message::before {
  content: '⚠';
  font-weight: bold;
}

/* Success message styling */
.success-message {
  color: #10b981;
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.success-message::before {
  content: '✓';
  font-weight: bold;
}