/* AccessHub Design System Tokens */
:root {
  /* Colors - Accessible palette with high contrast */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  --color-success-50: #f0fdf4;
  --color-success-500: #22c55e;
  --color-success-600: #16a34a;
  --color-success-700: #15803d;

  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;

  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;

  --color-neutral-0: #ffffff;
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;

  /* Accessibility category colors */
  --color-mobility: #8b5cf6;
  --color-hearing: #f59e0b;
  --color-vision: #10b981;
  --color-sensory: #ec4899;
  --color-parking: #3b82f6;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Spacing scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-neutral-800);
  background-color: var(--color-neutral-50);
  min-height: 100vh;
}

/* Focus States - Critical for accessibility */
:focus-visible {
  outline: 3px solid var(--color-primary-500);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Skip Link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary-600);
  color: white;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.header {
  background: var(--color-neutral-0);
  border-bottom: 1px solid var(--color-neutral-200);
  padding: var(--space-4) var(--space-6);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-600);
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-lg);
}

/* Search Bar */
.search-container {
  flex: 1;
  max-width: 600px;
}

.search-form {
  display: flex;
  gap: var(--space-2);
}

.search-input-wrapper {
  flex: 1;
  position: relative;
}

.search-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  padding-left: var(--space-10);
  border: 2px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:hover {
  border-color: var(--color-neutral-300);
}

.search-input:focus {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
  outline: none;
}

.search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-neutral-400);
  pointer-events: none;
}

.location-btn {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  background: var(--color-neutral-100);
  border: 2px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  color: var(--color-neutral-600);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.location-btn:hover {
  background: var(--color-neutral-200);
  border-color: var(--color-neutral-300);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary-600);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-700);
}

.btn-secondary {
  background: var(--color-neutral-0);
  color: var(--color-neutral-700);
  border: 2px solid var(--color-neutral-200);
}

.btn-secondary:hover {
  background: var(--color-neutral-50);
  border-color: var(--color-neutral-300);
}

.btn-icon {
  padding: var(--space-2);
  background: transparent;
  color: var(--color-neutral-600);
}

.btn-icon:hover {
  background: var(--color-neutral-100);
  color: var(--color-neutral-800);
}

/* Main Content */
.main-content {
  display: flex;
  flex: 1;
}

/* Filters Sidebar */
.filters-sidebar {
  width: 280px;
  background: var(--color-neutral-0);
  border-right: 1px solid var(--color-neutral-200);
  padding: var(--space-6);
  overflow-y: auto;
  flex-shrink: 0;
}

.filters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.filters-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-800);
}

.clear-filters {
  font-size: var(--text-sm);
  color: var(--color-primary-600);
  background: none;
  border: none;
  cursor: pointer;
  font-weight: var(--font-medium);
}

.clear-filters:hover {
  text-decoration: underline;
}

.filter-group {
  margin-bottom: var(--space-6);
}

.filter-group-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.filter-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  cursor: pointer;
}

.filter-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-neutral-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
  accent-color: var(--color-primary-600);
}

.filter-checkbox:checked {
  background: var(--color-primary-600);
  border-color: var(--color-primary-600);
}

.filter-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-neutral-700);
}

.filter-icon {
  font-size: var(--text-base);
}

.filter-count {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--color-neutral-400);
  background: var(--color-neutral-100);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
}

/* Results Area */
.results-area {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.results-header {
  padding: var(--space-4) var(--space-6);
  background: var(--color-neutral-0);
  border-bottom: 1px solid var(--color-neutral-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.results-count {
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
}

.results-count strong {
  color: var(--color-neutral-800);
}

.view-toggle {
  display: flex;
  background: var(--color-neutral-100);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
}

.view-btn {
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-neutral-500);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.view-btn.active {
  background: var(--color-neutral-0);
  color: var(--color-neutral-800);
  box-shadow: var(--shadow-sm);
}

.view-btn:hover:not(.active) {
  color: var(--color-neutral-700);
}

/* Venue Cards Grid */
.venues-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
  padding: var(--space-6);
}

.venue-card {
  background: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-neutral-200);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.venue-card:hover {
  border-color: var(--color-neutral-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.venue-card:focus-within {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.venue-image {
  width: 100%;
  height: 180px;
  background: var(--color-neutral-200);
  position: relative;
  overflow: hidden;
}

.venue-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.venue-badges {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  display: flex;
  gap: var(--space-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

.badge-verified {
  background: var(--color-success-500);
  color: white;
}

.badge-event {
  background: var(--color-primary-500);
  color: white;
}

.venue-save {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  background: var(--color-neutral-0);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
  color: var(--color-neutral-500);
}

.venue-save:hover {
  color: var(--color-error-500);
  transform: scale(1.1);
}

.venue-save.saved {
  color: var(--color-error-500);
}

.venue-content {
  padding: var(--space-4);
}

.venue-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-2);
}

.venue-name {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-800);
  margin: 0;
}

.venue-name a {
  color: inherit;
  text-decoration: none;
}

.venue-name a:hover {
  color: var(--color-primary-600);
}

.venue-rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--color-warning-500);
  font-weight: var(--font-semibold);
}

.venue-category {
  font-size: var(--text-sm);
  color: var(--color-neutral-500);
  margin-bottom: var(--space-3);
}

.venue-address {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
  margin-bottom: var(--space-4);
}

/* Accessibility Scores */
.accessibility-scores {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-neutral-100);
}

.access-score {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

.access-score.mobility {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-mobility);
}

.access-score.hearing {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-hearing);
}

.access-score.vision {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-vision);
}

.access-score.sensory {
  background: rgba(236, 72, 153, 0.1);
  color: var(--color-sensory);
}

.access-score.parking {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-parking);
}

.score-bar {
  width: 40px;
  height: 4px;
  background: var(--color-neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.score-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.access-score.mobility .score-fill { background: var(--color-mobility); }
.access-score.hearing .score-fill { background: var(--color-hearing); }
.access-score.vision .score-fill { background: var(--color-vision); }
.access-score.sensory .score-fill { background: var(--color-sensory); }
.access-score.parking .score-fill { background: var(--color-parking); }

/* Review Summary */
.venue-reviews {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-neutral-100);
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
}

.reviews-count {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.photos-count {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.last-updated {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--color-neutral-400);
}

/* Loading State */
.venue-card.loading .venue-image,
.venue-card.loading .venue-name,
.venue-card.loading .venue-category,
.venue-card.loading .venue-address {
  background: linear-gradient(90deg, var(--color-neutral-200) 25%, var(--color-neutral-100) 50%, var(--color-neutral-200) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
  text-align: center;
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-neutral-800);
  margin-bottom: var(--space-2);
}

.empty-description {
  font-size: var(--text-base);
  color: var(--color-neutral-500);
  max-width: 400px;
  margin-bottom: var(--space-6);
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-800));
  color: white;
  padding: var(--space-6);
  margin: var(--space-6);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.cta-content h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
}

.cta-content p {
  opacity: 0.9;
  font-size: var(--text-sm);
}

.btn-cta {
  background: white;
  color: var(--color-primary-600);
  font-weight: var(--font-semibold);
  white-space: nowrap;
}

.btn-cta:hover {
  background: var(--color-primary-50);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .filters-sidebar {
    display: none;
  }
  
  .header-content {
    flex-wrap: wrap;
  }
  
  .search-container {
    order: 3;
    flex: 1 1 100%;
    max-width: none;
    margin-top: var(--space-3);
  }
}

@media (max-width: 640px) {
  .header {
    padding: var(--space-3) var(--space-4);
  }
  
  .venues-grid {
    grid-template-columns: 1fr;
    padding: var(--space-4);
    gap: var(--space-4);
  }
  
  .cta-banner {
    flex-direction: column;
    text-align: center;
    margin: var(--space-4);
  }
  
  .location-btn span {
    display: none;
  }
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  background: var(--color-neutral-800);
  color: white;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success {
  background: var(--color-success-600);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.modal-overlay.show .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-neutral-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-neutral-100);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-neutral-600);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-neutral-200);
  color: var(--color-neutral-800);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-neutral-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}