/* ============================================
   Interactivity Enhancements - Enhanced User Experience
   ============================================
   
   This stylesheet provides enhanced interactivity features:
   - Real-time URL validation with visual feedback
   - Contextual help tooltips and guidance
   - Enhanced keyboard navigation
   - Accessibility improvements
   - Visual feedback and animations
   
   Requirements: 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8
   ============================================ */

/* ============================================
   URL Validation & Real-time Feedback
   ============================================ */

.url-validation-container {
  position: relative;
  margin-top: var(--eip-spacing-sm);
}

.validation-feedback {
  display: none;
  align-items: center;
  gap: var(--eip-spacing-sm);
  padding: var(--eip-spacing-md) var(--eip-spacing-lg);
  border-radius: var(--eip-radius-lg);
  font-size: 0.9rem;
  font-weight: 600;
  backdrop-filter: var(--eip-glass-blur);
  border: 1px solid transparent;
  animation: slideInDown 0.3s ease-out;
  transition: all var(--eip-transition-normal);
}

.validation-feedback.valid {
  background: var(--eip-success-light);
  color: #69db7c;
  border-color: rgba(40, 167, 69, 0.3);
  box-shadow: 0 4px 16px rgba(40, 167, 69, 0.2);
}

.validation-feedback.invalid {
  background: var(--eip-error-light);
  color: #ff8a95;
  border-color: rgba(220, 53, 69, 0.3);
  box-shadow: 0 4px 16px rgba(220, 53, 69, 0.2);
}

.validation-feedback.validating {
  background: rgba(0, 122, 204, 0.1);
  color: #74c0fc;
  border-color: rgba(0, 122, 204, 0.3);
  box-shadow: 0 4px 16px rgba(0, 122, 204, 0.2);
}

.validation-icon {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.validation-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--eip-secondary);
  border-top: 2px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.validation-message {
  flex: 1;
  line-height: 1.4;
}

/* Enhanced URL Input with Real-time Feedback */
.enhanced-url-input.valid {
  border-color: var(--eip-success) !important;
  box-shadow: 0 0 0 4px rgba(40, 167, 69, 0.15) !important;
}

.enhanced-url-input.invalid {
  border-color: var(--eip-error) !important;
  box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.15) !important;
}

.enhanced-url-input.validating {
  border-color: var(--eip-secondary) !important;
  box-shadow: 0 0 0 4px rgba(0, 122, 204, 0.15) !important;
}

/* Input Guidance */
.input-guidance {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: var(--eip-radius-lg);
  padding: var(--eip-spacing-lg);
  margin-top: var(--eip-spacing-md);
  backdrop-filter: var(--eip-glass-blur);
  animation: slideInDown 0.4s ease-out;
  position: relative;
  overflow: hidden;
}

.input-guidance::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--eip-secondary-gradient);
  border-radius: 0 2px 2px 0;
}

.guidance-content {
  display: flex;
  flex-direction: column;
  gap: var(--eip-spacing-md);
}

.guidance-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--eip-secondary);
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-sm);
}

.guidance-text {
  color: var(--eip-text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.guidance-examples {
  display: flex;
  flex-direction: column;
  gap: var(--eip-spacing-sm);
}

.example-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--eip-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.example-url {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.85rem;
  color: var(--eip-text-link);
  background: rgba(0, 122, 204, 0.1);
  padding: var(--eip-spacing-sm) var(--eip-spacing-md);
  border-radius: var(--eip-radius-sm);
  border: 1px solid rgba(0, 122, 204, 0.2);
}

/* ============================================
   Help Tooltips & Contextual Guidance
   ============================================ */

.help-tooltip {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: var(--eip-radius-lg);
  padding: var(--eip-spacing-lg);
  max-width: 320px;
  color: var(--eip-text-primary);
  font-size: 0.9rem;
  backdrop-filter: var(--eip-glass-blur-strong);
  box-shadow: var(--eip-shadow-xl);
  animation: fadeInUp 0.3s ease-out;
  z-index: var(--eip-z-tooltip);
  position: fixed;
}

.tooltip-header {
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-sm);
  margin-bottom: var(--eip-spacing-md);
  padding-bottom: var(--eip-spacing-sm);
  border-bottom: 1px solid var(--eip-glass-border);
}

.tooltip-icon {
  font-size: 1.2rem;
}

.tooltip-title {
  font-weight: 700;
  color: var(--eip-text-primary);
  font-size: 1rem;
}

.tooltip-content p {
  margin: 0 0 var(--eip-spacing-md) 0;
  line-height: 1.5;
  color: var(--eip-text-secondary);
}

.tooltip-examples,
.tooltip-shortcuts {
  margin-top: var(--eip-spacing-md);
}

.examples-title,
.shortcuts-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--eip-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--eip-spacing-sm);
}

.example {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.8rem;
  color: var(--eip-text-link);
  background: rgba(0, 122, 204, 0.1);
  padding: var(--eip-spacing-xs) var(--eip-spacing-sm);
  border-radius: var(--eip-radius-sm);
  margin-bottom: var(--eip-spacing-xs);
  border: 1px solid rgba(0, 122, 204, 0.2);
}

.shortcut {
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-sm);
  margin-bottom: var(--eip-spacing-xs);
  font-size: 0.85rem;
}

.shortcut kbd {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: var(--eip-radius-sm);
  padding: 0.2rem 0.5rem;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--eip-text-primary);
  min-width: 24px;
  text-align: center;
  backdrop-filter: var(--eip-glass-blur);
}

/* Help Button */
.help-button {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--eip-text-muted);
  transition: all var(--eip-transition-normal);
  backdrop-filter: var(--eip-glass-blur);
  z-index: var(--eip-z-elevated);
}

.help-button:hover,
.help-button:focus {
  background: var(--eip-glass-bg-hover);
  border-color: var(--eip-secondary);
  color: var(--eip-secondary);
  transform: scale(1.1);
  box-shadow: 0 0 12px rgba(0, 122, 204, 0.3);
}

/* Step Help Icons */
.step-help-icon {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.7rem;
  color: var(--eip-text-muted);
  transition: all var(--eip-transition-normal);
  backdrop-filter: var(--eip-glass-blur);
  position: absolute;
  right: var(--eip-spacing-sm);
  top: var(--eip-spacing-sm);
}

.step-help-icon:hover,
.step-help-icon:focus {
  background: var(--eip-glass-bg-hover);
  border-color: var(--eip-secondary);
  color: var(--eip-secondary);
  transform: scale(1.15);
  box-shadow: 0 0 8px rgba(0, 122, 204, 0.3);
}

/* ============================================
   Enhanced Title Selection with Visual Guidance
   ============================================ */

/* Recommendation Badge */
.recommendation-badge {
  position: absolute;
  top: var(--eip-spacing-sm);
  right: var(--eip-spacing-sm);
  background: var(--eip-primary-gradient);
  color: var(--eip-text-primary);
  padding: 0.3rem 0.6rem;
  border-radius: var(--eip-radius-md);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--eip-shadow-sm);
  animation: pulseGlow 2s ease-in-out infinite;
}

/* Character Count */
.char-count {
  position: absolute;
  bottom: var(--eip-spacing-sm);
  right: var(--eip-spacing-sm);
  font-size: 0.7rem;
  color: var(--eip-text-muted);
  background: var(--eip-glass-bg);
  padding: 0.2rem 0.5rem;
  border-radius: var(--eip-radius-sm);
  border: 1px solid var(--eip-glass-border);
  backdrop-filter: var(--eip-glass-blur);
}

/* Text Truncation */
.option-text.truncated {
  position: relative;
}

.expand-text-btn {
  background: none;
  border: none;
  color: var(--eip-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: var(--eip-radius-sm);
  transition: all var(--eip-transition-normal);
  margin-left: var(--eip-spacing-sm);
}

.expand-text-btn:hover,
.expand-text-btn:focus {
  background: rgba(0, 122, 204, 0.1);
  color: var(--eip-secondary-hover);
  transform: scale(1.05);
}

/* Enhanced Title Option Highlighting */
.title-option.highlighted {
  border-color: var(--eip-secondary) !important;
  background: rgba(0, 122, 204, 0.08) !important;
  transform: translateX(4px) scale(1.01) !important;
  box-shadow: 0 4px 20px rgba(0, 122, 204, 0.15) !important;
}

.title-option:focus {
  outline: 2px solid var(--eip-secondary);
  outline-offset: 2px;
}

/* Title Selection Guidance */
.title-selection-guidance {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: var(--eip-radius-lg);
  padding: var(--eip-spacing-md);
  margin-left: auto;
  backdrop-filter: var(--eip-glass-blur);
  max-width: 280px;
}

.guidance-header {
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-sm);
  margin-bottom: var(--eip-spacing-sm);
}

.guidance-icon {
  font-size: 1rem;
}

.guidance-shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--eip-spacing-sm);
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-xs);
  font-size: 0.8rem;
  color: var(--eip-text-secondary);
}

.shortcut-item kbd {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: var(--eip-radius-sm);
  padding: 0.1rem 0.4rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--eip-text-primary);
  min-width: 20px;
  text-align: center;
}

/* ============================================
   Progress Guidance & Contextual Help
   ============================================ */

.progress-guidance {
  background: var(--eip-glass-bg);
  border: 1px solid var(--eip-glass-border);
  border-radius: var(--eip-radius-lg);
  padding: var(--eip-spacing-lg);
  margin-top: var(--eip-spacing-md);
  backdrop-filter: var(--eip-glass-blur);
  animation: slideInUp 0.4s ease-out;
}

.progress-guidance .guidance-content {
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-lg);
}

.progress-guidance .guidance-icon {
  font-size: 2rem;
  animation: float 3s ease-in-out infinite;
}

.progress-guidance .guidance-text {
  flex: 1;
}

.progress-guidance .guidance-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--eip-text-primary);
  margin-bottom: var(--eip-spacing-sm);
}

.progress-guidance .guidance-description {
  color: var(--eip-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ============================================
   Enhanced Accessibility Features
   ============================================ */

/* 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;
}

/* Required Field Indicators */
.required-indicator {
  color: var(--eip-error);
  font-weight: 700;
  margin-left: var(--eip-spacing-xs);
  font-size: 1.1rem;
}

/* Enhanced Focus Indicators */
.enhanced-url-input:focus,
.title-option:focus,
.progress-step:focus-within,
input:focus,
select:focus,
textarea:focus,
button:focus {
  outline: 2px solid var(--eip-primary);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .validation-feedback.valid {
    background: #000;
    color: #00ff00;
    border: 2px solid #00ff00;
  }
  
  .validation-feedback.invalid {
    background: #000;
    color: #ff0000;
    border: 2px solid #ff0000;
  }
  
  .help-tooltip {
    background: #000;
    color: #fff;
    border: 2px solid #fff;
  }
  
  .title-option.highlighted {
    background: #000 !important;
    border: 3px solid #fff !important;
  }
}

/* ============================================
   User Feedback & Visual Responses
   ============================================ */

.user-feedback {
  display: flex;
  align-items: center;
  gap: var(--eip-spacing-sm);
  padding: var(--eip-spacing-md) var(--eip-spacing-lg);
  border-radius: var(--eip-radius-lg);
  font-size: 0.9rem;
  font-weight: 600;
  backdrop-filter: var(--eip-glass-blur-strong);
  border: 1px solid transparent;
  box-shadow: var(--eip-shadow-lg);
  position: fixed;
  z-index: var(--eip-z-tooltip);
  max-width: 400px;
  animation: slideInUp 0.3s ease-out;
}

.user-feedback.success {
  background: var(--eip-success-light);
  color: #69db7c;
  border-color: rgba(40, 167, 69, 0.3);
}

.user-feedback.error {
  background: var(--eip-error-light);
  color: #ff8a95;
  border-color: rgba(220, 53, 69, 0.3);
}

.user-feedback.warning {
  background: rgba(255, 193, 7, 0.15);
  color: #ffd43b;
  border-color: rgba(255, 193, 7, 0.3);
}

.user-feedback.info {
  background: rgba(0, 122, 204, 0.15);
  color: #74c0fc;
  border-color: rgba(0, 122, 204, 0.3);
}

.feedback-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.feedback-message {
  flex: 1;
  line-height: 1.4;
}

/* ============================================
   Keyboard Navigation Enhancements
   ============================================ */

/* Focus Management */
.focus-trap {
  position: relative;
}

.focus-trap:focus-within {
  outline: 2px solid var(--eip-primary);
  outline-offset: 4px;
  border-radius: var(--eip-radius-lg);
}

/* Tab Order Indicators (for development/debugging) */
[tabindex]:not([tabindex="-1"]) {
  position: relative;
}

/* Enhanced Button Focus States */
button:focus-visible {
  outline: 2px solid var(--eip-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(255, 153, 0, 0.2);
}

/* Enhanced Input Focus States */
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--eip-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(255, 153, 0, 0.15);
}

/* ============================================
   Responsive Enhancements
   ============================================ */

@media (max-width: 768px) {
  .help-tooltip {
    max-width: 280px;
    font-size: 0.85rem;
  }
  
  .input-guidance {
    padding: var(--eip-spacing-md);
  }
  
  .title-selection-guidance {
    max-width: 100%;
    margin-left: 0;
    margin-top: var(--eip-spacing-md);
  }
  
  .guidance-shortcuts {
    justify-content: center;
  }
  
  .user-feedback {
    max-width: 90vw;
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .help-tooltip {
    max-width: 90vw;
    font-size: 0.8rem;
    padding: var(--eip-spacing-md);
  }
  
  .validation-feedback {
    font-size: 0.8rem;
    padding: var(--eip-spacing-sm) var(--eip-spacing-md);
  }
  
  .recommendation-badge {
    font-size: 0.6rem;
    padding: 0.2rem 0.4rem;
  }
  
  .char-count {
    font-size: 0.6rem;
  }
}

/* ============================================
   Reduced Motion Support
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .help-tooltip,
  .validation-feedback,
  .input-guidance,
  .user-feedback,
  .progress-guidance {
    animation: none !important;
  }
  
  .recommendation-badge {
    animation: none !important;
  }
  
  .progress-guidance .guidance-icon {
    animation: none !important;
  }
  
  .validation-spinner {
    animation: none !important;
    border: 2px solid var(--eip-secondary);
  }
  
  .title-option.highlighted,
  .help-button:hover,
  .step-help-icon:hover {
    transform: none !important;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .help-tooltip,
  .help-button,
  .step-help-icon,
  .validation-feedback,
  .input-guidance,
  .user-feedback,
  .title-selection-guidance,
  .progress-guidance {
    display: none !important;
  }
}

/* ============================================
   Dark Mode Enhancements
   ============================================ */

@media (prefers-color-scheme: dark) {
  .help-tooltip {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  }
  
  .validation-feedback {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  }
  
  .user-feedback {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  }
}