/* ============================================
   Neurlyn - Navigation & Deep Enhancements
   ============================================ */

/* Main Navigation */
.main-nav {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sage-lightest);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
  box-shadow: 0 1px 3px rgba(127, 166, 138, 0.08);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand-group {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.nav-brand {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, #2c2c2c 0%, #4a6b56 40%, #7c9885 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: -1px;
  font-family: 'Space Grotesk', sans-serif;
  position: relative;
  display: inline-block;
}

/* Subtle dot accent */
.nav-brand::before {
  content: '';
  position: absolute;
  top: 8px;
  right: -8px;
  width: 4px;
  height: 4px;
  background: #7c9885;
  border-radius: 50%;
  opacity: 0.6;
  transition: all 0.3s ease;
}

/* Subtle underline */
.nav-brand::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 152, 133, 0.3), transparent);
  transition: all 0.3s ease;
  opacity: 0;
}

.nav-brand:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #2c2c2c 0%, #5a7a6a 50%, #8ca595 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-brand:hover::before {
  opacity: 1;
  transform: scale(1.2);
}

.nav-brand:hover::after {
  opacity: 1;
}

.nav-tagline {
  font-size: 0.875rem;
  color: var(--sage-accent);
  font-weight: 400;
  display: none;
  opacity: 0.9;
  letter-spacing: 0.3px;
  padding-left: 1rem;
  border-left: 1px solid var(--sage-lighter);
}

/* Show tagline on larger screens */
@media (min-width: 768px) {
  .nav-tagline {
    display: inline-block;
  }
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.625rem 1.25rem;
  border-radius: var(--border-radius-sm);
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--sage-dark);
  background: var(--sage-lightest);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--sage-dark);
  background: var(--sage-lightest);
  box-shadow: 0 2px 4px rgba(127, 166, 138, 0.15);
}

.nav-cta {
  background: var(--sage-primary);
  color: white;
  padding: 0.625rem 1.5rem;
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-soft);
}

.nav-cta:hover {
  background: var(--sage-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(127, 166, 138, 0.25);
}

/* Mobile navigation styles moved to neurlyn-mobile.css */
/* Responsive breakpoints handled centrally */

/* Brand Link Styling */
.brand-link {
  text-decoration: none;
  display: inline-block;
  transition: transform var(--transition-base);
}

.brand-link:hover {
  transform: scale(1.02);
}

.brand-link:hover .brand {
  background: linear-gradient(135deg, var(--sage-600) 0%, var(--gray-900) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Breadcrumb Navigation */
.breadcrumb {
  margin-bottom: 1.5rem;
  padding: 0.75rem 1rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  font-size: 0.875rem;
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li {
  display: flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: '→';
  margin: 0 0.75rem;
  color: var(--gray-400);
}

.breadcrumb a {
  color: var(--sage-600);
  text-decoration: none;
  transition: color var(--transition-base);
}

.breadcrumb a:hover {
  color: var(--sage-700);
  text-decoration: underline;
}

.breadcrumb [aria-current='page'] {
  color: var(--gray-900);
  font-weight: 500;
}

/* Ghost Button Style */
.btn-ghost {
  background: transparent;
  color: var(--gray-500);
  border: 1px solid transparent;
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  transition: all var(--transition-base);
}

.btn-ghost:hover {
  color: var(--gray-700);
  background: var(--gray-50);
  border-color: var(--gray-200);
}

/* Button with Icons */
.btn svg {
  display: inline-block;
  vertical-align: middle;
  margin: 0 0.25rem;
}

.btn-primary svg {
  color: currentColor;
}

/* Enhanced Question Navigation */
.question-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-100);
}

/* Skip Pattern */
.skip-indicator {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--gray-100);
  color: var(--gray-600);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.question-card.skipped .skip-indicator {
  opacity: 1;
}

/* ============================================
   DEEPER ENHANCEMENTS
   ============================================ */

/* Confidence Indicators */
.confidence-wrapper {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
}

.confidence-label {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: 0.5rem;
  display: block;
}

.confidence-scale {
  display: flex;
  gap: 0.5rem;
}

.confidence-option {
  flex: 1;
  padding: 0.5rem;
  text-align: center;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 0.75rem;
}

.confidence-option:hover {
  border-color: var(--sage-400);
  background: var(--sage-50);
}

.confidence-option.selected {
  background: var(--sage-500);
  color: white;
  border-color: var(--sage-600);
}

/* Question Review Modal */
.review-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.review-content {
  background: white;
  border-radius: var(--radius-xl);
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow: auto;
  padding: 2rem;
  box-shadow: var(--shadow-2xl);
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--gray-100);
}

.review-grid {
  display: grid;
  gap: 0.75rem;
}

.review-item {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.review-item:hover {
  background: var(--gray-100);
}

.review-item.unanswered {
  background: var(--warm-100);
  border: 1px solid var(--warm-200);
}

.review-number {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 50%;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--gray-700);
}

.review-question {
  font-size: 0.875rem;
  color: var(--gray-700);
}

.review-answer {
  font-weight: 500;
  color: var(--sage-600);
}

.review-edit {
  padding: 0.25rem 0.75rem;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.review-edit:hover {
  border-color: var(--sage-400);
  background: var(--sage-50);
}

/* History Comparison */
.history-panel {
  position: fixed;
  right: -400px;
  top: 0;
  bottom: 0;
  width: 400px;
  background: white;
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
  transition: right var(--transition-slow);
  z-index: 900;
  overflow-y: auto;
}

.history-panel.show {
  right: 0;
}

.history-header {
  padding: 1.5rem;
  background: var(--sage-50);
  border-bottom: 1px solid var(--sage-200);
}

.history-list {
  padding: 1rem;
}

.history-item {
  padding: 1rem;
  margin-bottom: 0.75rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.history-item:hover {
  background: var(--sage-50);
  transform: translateX(-4px);
}

.history-date {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-bottom: 0.25rem;
}

.history-scores {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.history-score {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: white;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}

/* Onboarding Tutorial */
.tutorial-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 6000;
  display: none;
}

.tutorial-overlay.active {
  display: block;
}

.tutorial-spotlight {
  position: absolute;
  border: 3px solid var(--sage-400);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.8);
  animation: pulse-border 2s infinite;
  transition: all var(--transition-slow);
}

@keyframes pulse-border {
  0%,
  100% {
    border-color: var(--sage-400);
  }
  50% {
    border-color: var(--sage-500);
  }
}

.tutorial-tooltip {
  position: absolute;
  background: white;
  padding: 1.5rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 320px;
  z-index: 6001;
}

.tutorial-tooltip::before {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  background: white;
  transform: rotate(45deg);
}

.tutorial-tooltip.top::before {
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
}

.tutorial-step {
  font-size: 0.75rem;
  color: var(--sage-600);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.tutorial-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--gray-900);
}

.tutorial-text {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.tutorial-actions {
  display: flex;
  gap: 0.75rem;
}

.tutorial-skip {
  color: var(--gray-500);
  font-size: 0.875rem;
  cursor: pointer;
}

/* Social Proof Section */
.social-proof {
  padding: 3rem 0;
  background: var(--gray-50);
  margin: 3rem 0;
  border-radius: var(--radius-xl);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.testimonial-card {
  background: white;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  position: relative;
}

.testimonial-quote {
  font-style: italic;
  color: var(--gray-700);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.testimonial-quote::before {
  content: '"';
  font-size: 3rem;
  color: var(--sage-200);
  position: absolute;
  top: 0.5rem;
  left: 1rem;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--sage-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--sage-700);
}

.author-info {
  flex: 1;
}

.author-name {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.875rem;
}

.author-role {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.testimonial-rating {
  display: flex;
  gap: 0.25rem;
  margin-top: 0.25rem;
}

.star {
  color: #f59e0b;
  font-size: 0.875rem;
}

/* Statistics Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  padding: 2rem;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  margin: 2rem 0;
  text-align: center;
}

.stat-item {
  position: relative;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--sage-600);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 60%;
  background: var(--gray-200);
}

/* Enhanced Loading States */
.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-md);
}

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

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-title {
  height: 1.5rem;
  width: 60%;
  margin-bottom: 1rem;
}

.skeleton-card {
  height: 120px;
  margin-bottom: 1rem;
}

/* Smooth Scroll Indicator */
.scroll-indicator {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 100;
}

.scroll-indicator.show {
  opacity: 1;
  transform: translateY(0);
}

.scroll-indicator:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Enhanced Tooltips */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip-content {
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-900);
  color: white;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.tooltip:hover .tooltip-content {
  opacity: 1;
  visibility: visible;
}

.tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid var(--gray-900);
}