/* ============================================
   CASE STUDY PAGE STYLES
   ============================================ */

/* Back Link */
.case-study__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-nav);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-xl);
  transition: color var(--transition-fast);
}

.case-study__back:hover {
  color: var(--accent);
}

.case-study__back-arrow {
  transition: transform var(--transition-fast);
}

.case-study__back:hover .case-study__back-arrow {
  transform: translateX(-4px);
}

/* Hero Section */
.case-study__hero {
  padding: var(--space-2xl) 0 var(--space-xl);
}

.case-study__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.case-study__tag {
  font-family: var(--font-body);
  font-size: var(--text-tag);
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-sm);
}

.case-study__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.case-study__subtitle {
  font-family: var(--font-body);
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 700px;
  margin-bottom: var(--space-xl);
}

/* Stats */
.case-study__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(240, 240, 243, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.case-study__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  text-align: center;
}

.case-study__stat-value {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--accent);
}

.case-study__stat-label {
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Hero Image */
.case-study__hero-image {
  padding-bottom: var(--space-2xl);
}

.case-study__image-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #001433 0%, #003d99 100%);
  padding: var(--space-lg);
}

.case-study__image-wrapper--photo {
  padding: 0;
  background: none;
  max-height: 500px;
}

.case-study__image-wrapper--photo .case-study__image {
  border-radius: var(--radius-lg);
  object-fit: cover;
  max-height: 500px;
}

.case-study__image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* Sections */
.case-study__section {
  padding: var(--space-2xl) 0;
}

.case-study__section--alt {
  background: rgba(240, 240, 243, 0.02);
}

/* Grid Layout */
.case-study__grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-2xl);
}

.case-study__content-wide {
  max-width: 900px;
}

.case-study__half {
  flex: 1;
}

/* Sidebar Info */
.case-study__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: sticky;
  top: 120px;
  height: fit-content;
}

.case-study__info-block {
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.case-study__info-label {
  font-family: var(--font-body);
  font-size: var(--text-tag);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.case-study__info-value {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-primary);
}

.case-study__download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-nav);
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.case-study__download:hover {
  color: var(--accent-light);
}

.case-study__download span {
  transition: transform var(--transition-fast);
}

.case-study__download:hover span {
  transform: translateY(2px);
}

/* Content Typography */
.case-study__heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.case-study__subheading {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--space-md);
  margin-top: var(--space-xl);
}

.case-study__text {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.case-study__text-large {
  font-family: var(--font-body);
  font-size: 1.25rem;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.case-study__text strong {
  color: var(--text-primary);
}

/* Lists */
.case-study__list {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  padding-left: var(--space-lg);
}

.case-study__list li {
  margin-bottom: var(--space-sm);
}

/* Research Questions */
.case-study__research-questions {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: rgba(59, 130, 246, 0.05);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.case-study__research-questions .case-study__subheading {
  margin-top: 0;
}

.case-study__research-questions .case-study__list {
  margin-bottom: 0;
}

/* Method Grid */
.case-study__method-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.case-study__method-card {
  padding: var(--space-lg);
  background: rgba(240, 240, 243, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.case-study__method-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.case-study__method-text {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.7;
}

.case-study__method-text strong {
  color: var(--text-primary);
}

/* Procedure Timeline */
.case-study__procedure {
  margin-top: var(--space-xl);
}

.case-study__timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  padding-left: var(--space-2xl);
}

.case-study__timeline::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.case-study__timeline-item {
  position: relative;
  display: flex;
  gap: var(--space-lg);
}

.case-study__timeline-number {
  position: absolute;
  left: calc(-1 * var(--space-2xl) + 8px);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--white);
  border-radius: 50%;
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: 600;
}

.case-study__timeline-content h4 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.case-study__timeline-content p {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Results Grid */
.case-study__results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.case-study__result-card {
  padding: var(--space-lg);
  background: rgba(240, 240, 243, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.case-study__result-card--primary {
  grid-column: span 2;
  background: rgba(59, 130, 246, 0.05);
  border-color: var(--accent);
}

.case-study__result-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.case-study__result-stat {
  font-family: var(--font-mono);
  font-size: var(--text-nav);
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.case-study__result-text {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Animated Chart */
.animated-chart {
  margin-bottom: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.animated-chart__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--text-primary);
}

.animated-chart__container {
  display: flex;
  gap: var(--space-md);
  height: 300px;
  margin-bottom: var(--space-lg);
}

.animated-chart__y-axis {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  color: var(--text-secondary);
  padding: var(--space-sm) 0;
  text-align: right;
  min-width: 30px;
}

.animated-chart__graph {
  flex: 1;
  position: relative;
}

.animated-chart__grid {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-sm) 0;
}

.animated-chart__grid-line {
  height: 1px;
  background: var(--border);
  width: 100%;
}

.animated-chart__bars {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  padding: var(--space-sm) var(--space-xl);
}

.animated-chart__group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
  max-width: 200px;
}

.animated-chart__bar-wrapper {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-end;
  height: 250px;
  width: 100%;
  justify-content: center;
}

.animated-chart__bar {
  width: 50px;
  height: 0;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  position: relative;
  cursor: pointer;
  transition: filter 0.2s ease, transform 0.2s ease;
}

.animated-chart__bar:hover {
  filter: brightness(1.2);
  transform: translateY(-4px);
}

.animated-chart__bar--no-sfx {
  background: linear-gradient(180deg, #fb923c 0%, #f97316 100%);
}

.animated-chart__bar--sfx {
  background: linear-gradient(180deg, #60a5fa 0%, #3b82f6 100%);
}

/* Animation */
.animated-chart.animate .animated-chart__bar {
  animation: barGrow 1s ease-out forwards;
}

.animated-chart__group:nth-child(1) .animated-chart__bar:nth-child(1) {
  animation-delay: 0s;
}
.animated-chart__group:nth-child(1) .animated-chart__bar:nth-child(2) {
  animation-delay: 0.15s;
}
.animated-chart__group:nth-child(2) .animated-chart__bar:nth-child(1) {
  animation-delay: 0.3s;
}
.animated-chart__group:nth-child(2) .animated-chart__bar:nth-child(2) {
  animation-delay: 0.45s;
}

@keyframes barGrow {
  from {
    height: 0;
  }
  to {
    height: var(--bar-height);
  }
}

/* Tooltip */
.animated-chart__tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  border: 1px solid var(--border);
  z-index: 10;
}

.animated-chart__tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--bg-elevated);
}

.animated-chart__bar:hover .animated-chart__tooltip {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

.animated-chart__label {
  font-family: var(--font-body);
  font-size: var(--text-nav);
  color: var(--text-secondary);
  font-weight: 500;
}

/* Legend */
.animated-chart__legend {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-md);
}

.animated-chart__legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-nav);
  color: var(--text-secondary);
}

.animated-chart__legend-color {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
}

.animated-chart__legend-color--no-sfx {
  background: linear-gradient(180deg, #fb923c 0%, #f97316 100%);
}

.animated-chart__legend-color--sfx {
  background: linear-gradient(180deg, #60a5fa 0%, #3b82f6 100%);
}

.animated-chart__caption {
  font-family: var(--font-body);
  font-size: var(--text-label);
  color: var(--text-tertiary);
  text-align: center;
  font-style: italic;
}

/* Responsive Chart */
@media (max-width: 600px) {
  .animated-chart {
    padding: var(--space-md);
  }

  .animated-chart__container {
    height: 250px;
  }

  .animated-chart__bar-wrapper {
    height: 200px;
  }

  .animated-chart__bar {
    width: 35px;
  }

  .animated-chart__bars {
    padding: var(--space-sm);
  }

  .animated-chart__legend {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
  }
}

/* Insights */
.case-study__insights {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.case-study__insight {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(240, 240, 243, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.case-study__insight:hover {
  border-color: var(--accent);
}

.case-study__insight-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  color: var(--accent);
}

.case-study__insight-icon svg {
  width: 24px;
  height: 24px;
}

.case-study__insight-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.case-study__insight-text {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* CTA Section */
.case-study__cta {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.case-study__cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.case-study__cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.case-study__cta-text {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.case-study__cta-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Next Project */
.case-study__next {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
}

.case-study__next-link {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-sm);
  text-decoration: none;
  padding: var(--space-xl);
  transition: all var(--transition-fast);
}

.case-study__next-link:hover {
  background: rgba(240, 240, 243, 0.02);
}

.case-study__next-label {
  font-family: var(--font-body);
  font-size: var(--text-tag);
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.case-study__next-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.case-study__next-link:hover .case-study__next-title {
  color: var(--accent);
}

.case-study__next-arrow {
  font-size: 1.5rem;
  color: var(--accent);
  transition: transform var(--transition-fast);
}

.case-study__next-link:hover .case-study__next-arrow {
  transform: translateX(8px);
}

/* Responsive */
@media (max-width: 900px) {
  .case-study__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-study__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .case-study__sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .case-study__info-block {
    flex: 1;
    min-width: 200px;
    padding-bottom: 0;
    border-bottom: none;
    border-right: 1px solid var(--border);
    padding-right: var(--space-md);
  }

  .case-study__info-block:last-child {
    border-right: none;
  }

  .case-study__method-grid {
    grid-template-columns: 1fr;
  }

  .case-study__results-grid {
    grid-template-columns: 1fr;
  }

  .case-study__result-card--primary {
    grid-column: span 1;
  }
}

@media (max-width: 600px) {
  .case-study__stats {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
  }

  .case-study__sidebar {
    flex-direction: column;
  }

  .case-study__info-block {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-right: 0;
    padding-bottom: var(--space-md);
  }

  .case-study__insight {
    flex-direction: column;
  }

  .case-study__cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .case-study__timeline {
    padding-left: var(--space-xl);
  }

  .case-study__timeline::before {
    left: 12px;
  }

  .case-study__timeline-number {
    left: calc(-1 * var(--space-xl) + 2px);
    width: 20px;
    height: 20px;
    font-size: 0.7rem;
  }
}

/* Deliverables */
.case-study__deliverable {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.case-study__deliverable:last-child {
  margin-bottom: 0;
}

.case-study__deliverable-label {
  font-family: var(--font-body);
  font-size: var(--text-nav);
  color: var(--text-primary);
  font-weight: 500;
}

.case-study__deliverable-actions {
  display: flex;
  gap: var(--space-sm);
}

.case-study__view-btn {
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: 500;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.case-study__view-btn:hover {
  background: var(--accent);
  color: var(--white);
}

.case-study__download-link {
  font-family: var(--font-body);
  font-size: var(--text-label);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.case-study__download-link:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* PDF Modal */
.pdf-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.pdf-modal.active {
  opacity: 1;
  visibility: visible;
}

.pdf-modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
}

.pdf-modal__container {
  position: relative;
  width: 90vw;
  height: 90vh;
  max-width: 1200px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.pdf-modal.active .pdf-modal__container {
  transform: scale(1);
}

.pdf-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.pdf-modal__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-primary);
}

.pdf-modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pdf-modal__close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.pdf-modal__content {
  flex: 1;
  overflow: hidden;
}

.pdf-modal__content iframe {
  width: 100%;
  height: 100%;
  border: none;
}

@media (max-width: 600px) {
  .pdf-modal__container {
    width: 100%;
    height: 100%;
    border-radius: 0;
  }

  .pdf-modal__header {
    padding: var(--space-sm) var(--space-md);
  }
}

/* Status Tag */
.case-study__tag--status {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.case-study__info-value--status {
  color: #22c55e;
}

/* ============================================
   RHYTHM DEMO - Minimal Aesthetic Visualizer
   ============================================ */

.rhythm-demo {
  background: #0a0a0a;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* Stage - Main visualization area */
.rhythm-demo__stage {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  padding: var(--space-2xl) var(--space-xl);
  min-height: 320px;
}

/* Images section */
.rhythm-demo__images {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.rhythm-demo__frame {
  position: relative;
  width: 280px;
  height: 180px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  transition: all 0.15s ease;
}

.rhythm-demo__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.15s ease;
}

.rhythm-demo__frame--flash {
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.1), 0 20px 50px rgba(0, 0, 0, 0.5);
}

.rhythm-demo__frame--flash img {
  transform: scale(1.02);
}

.rhythm-demo__label {
  font-family: var(--font-body);
  font-size: var(--text-label);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* Connector between image and ring */
.rhythm-demo__connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: 0 var(--space-md);
}

.rhythm-demo__connector-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0.1) 100%);
  position: relative;
}

.rhythm-demo__connector--synced .rhythm-demo__connector-line {
  background: linear-gradient(90deg, rgba(34,197,94,0.2) 0%, rgba(34,197,94,0.6) 50%, rgba(34,197,94,0.2) 100%);
}

.rhythm-demo__connector--desynced .rhythm-demo__connector-line {
  background: linear-gradient(90deg, rgba(239,68,68,0.2) 0%, rgba(239,68,68,0.6) 50%, rgba(239,68,68,0.2) 100%);
}

.rhythm-demo__sync-badge {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-tertiary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.rhythm-demo__sync-badge--synced {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border-color: rgba(34, 197, 94, 0.3);
}

.rhythm-demo__sync-badge--desynced {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}

.rhythm-demo__sync-badge--none {
  background: rgba(107, 114, 128, 0.1);
  color: #6b7280;
  border-color: rgba(107, 114, 128, 0.3);
}

.rhythm-demo__sync-icon {
  font-size: 11px;
}

/* Ring container */
.rhythm-demo__ring-container {
  --ring-color: #22c55e;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  position: relative;
  transition: opacity 0.3s ease;
}

.rhythm-demo__ring-container--hidden {
  opacity: 0.2;
}

.rhythm-demo__ring-container--hidden .rhythm-demo__ring-progress {
  stroke: transparent !important;
}

/* SVG Ring */
.rhythm-demo__ring {
  width: 120px;
  height: 120px;
  transform: rotate(-90deg);
}

.rhythm-demo__ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 4;
}

.rhythm-demo__ring-progress {
  fill: none;
  stroke: var(--ring-color);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 339.292; /* 2 * PI * 54 */
  stroke-dashoffset: 339.292;
  filter: drop-shadow(0 0 8px var(--ring-color));
  transition: stroke-dashoffset 0.9s linear;
}

/* Ring center */
.rhythm-demo__ring-center {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease;
}

.rhythm-demo__ring-center--pulse {
  transform: translateX(-50%) scale(1.1);
}

.rhythm-demo__beat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  opacity: 0.9;
}

/* Explanation area */
.rhythm-demo__explanation {
  padding: var(--space-lg) var(--space-xl);
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border);
}

.rhythm-demo__explanation-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.rhythm-demo__explanation h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.rhythm-demo__explanation p {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Tabs */
.rhythm-demo__tabs {
  display: flex;
  border-top: 1px solid var(--border);
}

.rhythm-demo__tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-nav);
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.rhythm-demo__tab:last-child {
  border-right: none;
}

.rhythm-demo__tab:hover {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
}

.rhythm-demo__tab--active {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.rhythm-demo__tab--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

/* Tab dots */
.rhythm-demo__tab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.rhythm-demo__tab-dot--green {
  background: #22c55e;
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
}

.rhythm-demo__tab-dot--red {
  background: #ef4444;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
}

.rhythm-demo__tab-dot--gray {
  background: #6b7280;
}

/* Info button */
.rhythm-demo__info {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  font-style: italic;
  color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-left: var(--space-xs);
}

.rhythm-demo__info:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .rhythm-demo__stage {
    flex-direction: column;
    gap: var(--space-lg);
    padding: var(--space-xl) var(--space-md);
  }

  .rhythm-demo__connector {
    transform: rotate(90deg);
    padding: var(--space-sm) 0;
  }

  .rhythm-demo__connector-line {
    width: 40px;
  }

  .rhythm-demo__frame {
    width: 100%;
    max-width: 320px;
    height: 200px;
  }

  .rhythm-demo__tabs {
    flex-wrap: wrap;
  }

  .rhythm-demo__tab {
    flex: 1 1 50%;
    border-bottom: 1px solid var(--border);
  }

  .rhythm-demo__tab:nth-child(2) {
    border-right: none;
  }

  .rhythm-demo__tab:nth-child(3),
  .rhythm-demo__tab:nth-child(4) {
    border-bottom: none;
  }
}

@media (max-width: 480px) {
  .rhythm-demo__tab {
    flex: 1 1 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .rhythm-demo__tab:last-child {
    border-bottom: none;
  }

  .rhythm-demo__ring {
    width: 100px;
    height: 100px;
  }

  .rhythm-demo__ring-center {
    width: 100px;
    height: 100px;
  }

  .rhythm-demo__beat-num {
    font-size: 1.5rem;
  }
}

/* ============================================
   CONCEPT CARDS - Interactive Hover Effects
   ============================================ */

/* Card Container Grid */
.concept-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

/* Card Base Styles */
.concept-card {
  position: relative;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 24px;
  cursor: default;

  /* Smooth transitions for everything */
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease,
    background-color 0.3s ease,
    border-color 0.3s ease,
    opacity 0.3s ease;
}

/* Title */
.concept-card__title {
  color: var(--accent-color);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 12px;
  transition: color 0.3s ease;
}

/* Body text */
.concept-card__text {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
  transition: color 0.3s ease;
}

/* Accent Colors Per Card */
.concept-card--eeg {
  --accent-color: #00e5ff;
  --glow-color: rgba(0, 229, 255, 0.4);
}

.concept-card--sound {
  --accent-color: #c084fc;
  --glow-color: rgba(192, 132, 252, 0.4);
}

.concept-card--presets {
  --accent-color: #4ade80;
  --glow-color: rgba(74, 222, 128, 0.4);
}

/* Hover State - Color Inversion */
.concept-card:hover {
  /* Lift and scale */
  transform: translateY(-8px) scale(1.05);

  /* Background becomes accent color */
  background-color: var(--accent-color);
  border-color: var(--accent-color);

  /* Shadow with accent glow */
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.3),
    0 0 40px var(--glow-color);
}

/* Title inverts to dark */
.concept-card:hover .concept-card__title {
  color: #0a0a0a;
}

/* Body text inverts to dark */
.concept-card:hover .concept-card__text {
  color: #0a0a0a;
}

/* Dim Sibling Cards on Hover */
.concept-cards:hover .concept-card:not(:hover) {
  opacity: 0.4;
  transform: scale(0.97);
}

/* Responsive: stack on mobile */
@media (max-width: 900px) {
  .concept-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* Reduce effect intensity on mobile */
  .concept-card:hover {
    transform: translateY(-4px) scale(1.02);
  }

  /* Disable sibling dimming on touch devices */
  .concept-cards:hover .concept-card:not(:hover) {
    opacity: 1;
    transform: none;
  }
}

/* Why Techno Grid */
.case-study__why-techno {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: rgba(59, 130, 246, 0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.case-study__why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.case-study__why-item {
  display: flex;
  gap: var(--space-md);
}

.case-study__why-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.case-study__why-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.case-study__why-item p {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Controls Section */
.case-study__controls {
  margin-top: var(--space-xl);
}

/* Hypothesis */
.case-study__hypothesis {
  margin-top: var(--space-lg);
}

.case-study__hypothesis-card {
  padding: var(--space-lg);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.02) 100%);
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
}

.case-study__hypothesis-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.case-study__hypothesis-text {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--text-primary);
  line-height: 1.7;
}

.case-study__hypothesis-rationale h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

/* Tech Stack */
.case-study__tech-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.case-study__tech-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(240, 240, 243, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.case-study__tech-item:hover {
  border-color: var(--accent);
}

.case-study__tech-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  color: var(--accent);
}

.case-study__tech-icon svg {
  width: 24px;
  height: 24px;
}

.case-study__tech-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.case-study__tech-desc {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Progress Timeline */
.case-study__timeline-progress {
  position: relative;
  padding-left: var(--space-xl);
}

.case-study__timeline-progress::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.case-study__progress-item {
  position: relative;
  padding-bottom: var(--space-lg);
}

.case-study__progress-item:last-child {
  padding-bottom: 0;
}

.case-study__progress-marker {
  position: absolute;
  left: calc(-1 * var(--space-xl) + 4px);
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
}

.case-study__progress-item--complete .case-study__progress-marker {
  background: var(--accent);
  border-color: var(--accent);
}

.case-study__progress-item--complete .case-study__progress-marker::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 10px;
}

.case-study__progress-item--active .case-study__progress-marker {
  background: var(--accent);
  border-color: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
}

.case-study__progress-content h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.case-study__progress-item--complete .case-study__progress-content h4,
.case-study__progress-item--active .case-study__progress-content h4 {
  color: var(--text-primary);
}

.case-study__progress-item:not(.case-study__progress-item--complete):not(.case-study__progress-item--active) .case-study__progress-content h4 {
  color: var(--text-secondary);
}

.case-study__progress-content p {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Responsive for Entrainment page */
@media (max-width: 768px) {
  .paradigm-visual__conditions {
    grid-template-columns: repeat(2, 1fr);
  }

  .paradigm-visual__condition:nth-child(2) {
    border-right: none;
  }

  .paradigm-visual__condition:nth-child(1),
  .paradigm-visual__condition:nth-child(2) {
    border-bottom: 1px solid var(--border);
  }

  .case-study__why-grid {
    grid-template-columns: 1fr;
  }

  .case-study__tech-item {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .paradigm-visual__choice {
    flex-direction: column;
    gap: var(--space-md);
  }

  .paradigm-visual__conditions {
    grid-template-columns: 1fr;
  }

  .paradigm-visual__condition {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .paradigm-visual__condition:last-child {
    border-bottom: none;
  }
}

/* ============================================
   COMING SOON CASE STUDY STYLES
   ============================================ */

.case-study__coming-soon-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.05) 0%, rgba(59, 130, 246, 0.05) 50%, rgba(139, 92, 246, 0.05) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  min-height: 400px;
}

.case-study__coming-soon-icon {
  width: 120px;
  height: 120px;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  animation: floatIcon 4s ease-in-out infinite;
}

@keyframes floatIcon {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.case-study__coming-soon-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  background: linear-gradient(90deg, #22d3ee, #3b82f6, #8b5cf6);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  margin-bottom: var(--space-md);
}

.case-study__coming-soon-text {
  font-family: var(--font-body);
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 500px;
}

@media (max-width: 768px) {
  .case-study__coming-soon-hero {
    padding: var(--space-xl) var(--space-md);
    min-height: 300px;
  }

  .case-study__coming-soon-icon {
    width: 80px;
    height: 80px;
  }
}