/* Custom CSS for Government-style Accessibility Audit Website */

:root {
  /* Government-style color palette with high contrast */
  --primary-color: #1e3a8a;  /* Deep blue */
  --secondary-color: #374151; /* Dark gray */
  --success-color: #10b981;   /* Green */
  --warning-color: #f59e0b;   /* Amber */
  --danger-color: #ef4444;    /* Red */
  --light-bg: #f8fafc;        /* Light gray */
  --white: #ffffff;
  --text-dark: #111827;
  --text-muted: #6b7280;
  
  /* Accessibility-focused typography */
  --font-family-base: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  
  /* Spacing and sizing for touch targets */
  --min-touch-target: 44px;
  --border-radius: 0.375rem;
}

/* Base styles */
body {
  font-family: var(--font-family-base);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
}

/* High contrast focus indicators for accessibility */
*:focus {
  outline: 3px solid #fbbf24 !important;
  outline-offset: 2px !important;
}

/* Skip to main content link */
.visually-hidden-focusable:not(:focus):not(:focus-within) {
  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;
}

.visually-hidden-focusable:focus {
  z-index: 9999;
  top: 10px;
  left: 10px;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background-color: var(--warning-color);
  color: var(--text-dark);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-medium);
}

/* Header and navigation improvements */
header {
  border-bottom: 3px solid var(--warning-color);
}

.navbar {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar-nav .nav-link {
  font-weight: var(--font-weight-medium);
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  margin: 0 0.25rem;
  transition: all 0.2s ease;
  min-height: var(--min-touch-target);
  display: flex;
  align-items: center;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  background-color: var(--light-bg);
  color: var(--primary-color);
  transform: translateY(-1px);
}

/* Hero section styling */
.hero-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
  border: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Card enhancements */
.card {
  border: 1px solid #e5e7eb;
  border-radius: var(--border-radius);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
  font-weight: var(--font-weight-medium);
  border-bottom: 1px solid #e5e7eb;
}

/* Button improvements for accessibility */
.btn {
  font-weight: var(--font-weight-medium);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  min-height: var(--min-touch-target);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 2px solid transparent;
}

.btn:focus {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #1e40af;
  border-color: #1e40af;
}

.btn-danger {
  background-color: var(--danger-color);
  border-color: var(--danger-color);
}

.btn-danger:hover,
.btn-danger:focus {
  background-color: #dc2626;
  border-color: #dc2626;
}

.btn-success {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

.btn-warning {
  background-color: var(--warning-color);
  border-color: var(--warning-color);
  color: var(--text-dark);
}

.btn-warning:hover,
.btn-warning:focus {
  background-color: #d97706;
  border-color: #d97706;
  color: var(--white);
}

/* Form improvements for accessibility */
.form-control,
.form-select {
  font-size: 16px; /* Prevents zoom on iOS */
  min-height: var(--min-touch-target);
  border: 2px solid #d1d5db;
  border-radius: var(--border-radius);
  padding: 0.75rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-label {
  font-weight: var(--font-weight-medium);
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.form-text {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.invalid-feedback {
  font-weight: var(--font-weight-medium);
}

/* Alert improvements */
.alert {
  border-radius: var(--border-radius);
  border-width: 2px;
  padding: 1rem 1.25rem;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: var(--success-color);
  color: #166534;
}

.alert-info {
  background-color: #eff6ff;
  border-color: #3b82f6;
  color: #1e40af;
}

.alert-warning {
  background-color: #fffbeb;
  border-color: var(--warning-color);
  color: #92400e;
}

.alert-danger {
  background-color: #fef2f2;
  border-color: var(--danger-color);
  color: #991b1b;
}

/* List group improvements */
.list-group-item {
  border-color: #e5e7eb;
  padding: 0.75rem 1rem;
}

.list-group-item:hover {
  background-color: var(--light-bg);
}

/* Badge improvements */
.badge {
  font-weight: var(--font-weight-medium);
  padding: 0.5rem 0.75rem;
  border-radius: calc(var(--border-radius) * 0.75);
}

/* Footer styling */
footer {
  margin-top: 3rem;
  padding: 2rem 0;
  background-color: var(--secondary-color);
}

footer a {
  color: #d1d5db;
  text-decoration: none;
  transition: color 0.2s ease;
}

footer a:hover,
footer a:focus {
  color: var(--white);
  text-decoration: underline;
}

/* Responsive improvements */
@media (max-width: 768px) {
  .hero-section {
    padding: 2rem 1rem;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 0.5rem;
  }
  
  .card {
    margin-bottom: 1rem;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #000080;
    --text-dark: #000000;
    --white: #ffffff;
  }
  
  .btn {
    border-width: 3px;
  }
  
  .form-control,
  .form-select {
    border-width: 3px;
  }
}

/* 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;
  }
}

/* Print styles */
@media print {
  .navbar,
  .btn,
  footer {
    display: none !important;
  }
  
  .hero-section {
    background: var(--white) !important;
    color: var(--text-dark) !important;
  }
  
  a {
    color: var(--text-dark) !important;
    text-decoration: underline !important;
  }
}

/* Additional utility classes for accessibility */
.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;
}

.text-high-contrast {
  color: var(--text-dark);
  font-weight: var(--font-weight-medium);
}

/* Loading states for better UX */
.btn.loading {
  position: relative;
  color: transparent;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  margin: auto;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: button-loading-spinner 1s ease infinite;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@keyframes button-loading-spinner {
  from {
    transform: translate(-50%, -50%) rotate(0turn);
  }
  to {
    transform: translate(-50%, -50%) rotate(1turn);
  }
}

/* Custom checkbox styling for better accessibility */
.form-check-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Improve accordion accessibility */
.accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.accordion-button:not(.collapsed) {
  background-color: var(--light-bg);
  color: var(--primary-color);
}