/**
 * K-VISION EXPORT - Virtual Try-On Styles (Production-Ready)
 * Mobile-first AR experience with conversion optimization
 */

/* ============================================
   Base Container
   ============================================ */
.tryon-container {
  min-height: 100vh;
  background: linear-gradient(135deg, #F7F9FC 0%, #E8EDF5 100%);
  padding: var(--space-md);
}

.tryon-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

/* ============================================
   AR Canvas Section
   ============================================ */
.ar-section {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  position: relative;
}

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

.ar-title {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.ar-status {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-sm);
  color: var(--color-text-light);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.ar-canvas-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
}

#videoElement {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}

#canvasElement {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ar-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

.face-guide {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%;
  height: 70%;
  border: 3px dashed rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  animation: fadeInOut 2s infinite;
}

@keyframes fadeInOut {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

.ar-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.ar-control-btn {
  padding: var(--space-sm) var(--space-lg);
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.ar-control-btn:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-primary);
}

.ar-control-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.ar-control-btn i {
  font-size: 16px;
}

/* ============================================
   Glasses Selection Panel
   ============================================ */
.glasses-panel {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

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

.panel-title {
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--color-text);
}

.filter-btn {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  cursor: pointer;
  transition: all 0.2s;
}

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

.glasses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-md);
  max-height: 600px;
  overflow-y: auto;
  padding-right: var(--space-xs);
}

.glasses-card {
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.glasses-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.glasses-card.selected {
  border-color: var(--color-primary);
  background: rgba(31, 60, 136, 0.05);
}

.glasses-card.selected::after {
  content: '✓';
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.glasses-image {
  width: 100%;
  height: 100px;
  object-fit: contain;
  margin-bottom: var(--space-xs);
}

.glasses-name {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.glasses-price {
  font-size: var(--font-sm);
  color: var(--color-primary);
  font-weight: 700;
}

/* ============================================
   Fit Score Display
   ============================================ */
.fit-score-panel {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

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

.score-main {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.score-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.score-number {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.score-label {
  font-size: 11px;
  margin-top: 2px;
}

.score-stars {
  font-size: 24px;
  color: var(--color-warning);
}

.score-breakdown {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.score-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.score-item-label {
  font-size: var(--font-sm);
  color: var(--color-text-light);
  font-weight: 500;
}

.score-item-bar {
  height: 8px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.score-item-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  transition: width 0.5s ease;
}

.score-item-value {
  font-size: var(--font-xs);
  color: var(--color-text);
  font-weight: 600;
  text-align: right;
}

.recommendation-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.recommendation-item {
  font-size: var(--font-sm);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.recommendation-item.positive {
  color: var(--color-success);
}

.recommendation-item.warning {
  color: var(--color-warning);
}

/* ============================================
   Comfort Prediction
   ============================================ */
.comfort-panel {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  margin-top: var(--space-lg);
}

.comfort-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.comfort-item {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: all 0.2s;
}

.comfort-item.low {
  border-color: var(--color-success);
}

.comfort-item.medium {
  border-color: var(--color-warning);
}

.comfort-item.high {
  border-color: var(--color-error);
}

.comfort-icon {
  font-size: 32px;
  margin-bottom: var(--space-xs);
}

.comfort-item.low .comfort-icon {
  color: var(--color-success);
}

.comfort-item.medium .comfort-icon {
  color: var(--color-warning);
}

.comfort-item.high .comfort-icon {
  color: var(--color-error);
}

.comfort-label {
  font-size: var(--font-sm);
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.comfort-value {
  font-size: var(--font-sm);
  font-weight: 700;
  color: var(--color-text);
}

/* ============================================
   Comparison Mode
   ============================================ */
.comparison-panel {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  margin-top: var(--space-lg);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.comparison-card {
  background: var(--color-bg-secondary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.comparison-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.comparison-card.active {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.comparison-image {
  width: 100%;
  height: 80px;
  object-fit: contain;
  margin-bottom: var(--space-sm);
}

.comparison-score {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-sm);
}

.comparison-score-value {
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--color-primary);
}

.comparison-badge {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  padding: 2px 8px;
  background: var(--color-success);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--radius-full);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  background: white;
  border-top: 2px solid var(--color-border);
  padding: var(--space-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
}

.cta-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.cta-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cta-glasses-name {
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--color-text);
}

.cta-fit-score {
  font-size: var(--font-sm);
  color: var(--color-text-light);
}

.cta-fit-score .score-value {
  color: var(--color-primary);
  font-weight: 700;
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
}

.cta-btn {
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-full);
  font-size: var(--font-md);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.cta-btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.cta-btn-secondary:hover {
  background: rgba(31, 60, 136, 0.1);
}

.cta-btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.cta-btn-primary:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* ============================================
   Loading & Empty States
   ============================================ */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--color-bg-secondary);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  margin-top: var(--space-md);
  font-size: var(--font-md);
  color: var(--color-text-light);
}

.empty-state {
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-text-light);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.empty-title {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.empty-description {
  font-size: var(--font-sm);
}

/* ============================================
   Responsive: Tablet
   ============================================ */
@media (min-width: 768px) and (max-width: 1023px) {
  .tryon-wrapper {
    grid-template-columns: 1fr 1fr;
  }

  .ar-section {
    grid-column: 1 / -1;
  }

  .glasses-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .comparison-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .comfort-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   Responsive: Desktop
   ============================================ */
@media (min-width: 1024px) {
  .tryon-wrapper {
    grid-template-columns: 2fr 1fr;
  }

  .ar-section {
    grid-row: 1 / 3;
  }

  .ar-canvas-wrapper {
    aspect-ratio: 16/9;
  }

  .glasses-grid {
    grid-template-columns: repeat(2, 1fr);
    max-height: 800px;
  }

  .score-breakdown {
    grid-template-columns: repeat(4, 1fr);
  }

  .comfort-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .comparison-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   Responsive: Mobile
   ============================================ */
@media (max-width: 767px) {
  .tryon-container {
    padding: var(--space-sm);
  }

  .ar-section {
    padding: var(--space-md);
  }

  .ar-title {
    font-size: var(--font-md);
  }

  .ar-canvas-wrapper {
    aspect-ratio: 3/4;
  }

  .ar-controls {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .ar-control-btn {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-xs);
  }

  .glasses-panel {
    padding: var(--space-md);
  }

  .glasses-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    max-height: 400px;
  }

  .glasses-image {
    height: 80px;
  }

  .fit-score-panel {
    padding: var(--space-md);
  }

  .score-breakdown {
    grid-template-columns: 1fr;
  }

  .comfort-grid {
    grid-template-columns: 1fr;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .cta-wrapper {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .cta-btn {
    justify-content: center;
  }
}

/* ============================================
   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-width: 0;
}

/* Focus states */
button:focus-visible,
.glasses-card:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .glasses-card {
    border-width: 3px;
  }
  
  .cta-btn-primary {
    border: 2px solid white;
  }
}

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

/* Print styles */
@media print {
  .ar-controls,
  .cta-section {
    display: none;
  }
  
  .ar-canvas-wrapper {
    page-break-inside: avoid;
  }
}