/* ═══════════════════════════════════════════
   CASE STUDY PAGE STYLES
   CygnusAlpha Production Theme - v3 Purple Design
   SEO-Optimized | Accessible | Performance-Focused
   ═══════════════════════════════════════════ */

/* ═══════════════════════════════════════════
   SHARED CASE STUDY STYLES
   ═══════════════════════════════════════════ */
.case-container {
  padding: 0 84px;
}

.section-label {
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.section-label::before {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--primary-border);
}

.highlight-italic {
  color: var(--primary);
  font-style: italic;
}

/* Screen reader only content for 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;
}

/* ═══════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════ */
.case-hero {
  background: var(--white);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.case-hero::before {
  background: var(--white);
  content: '';
  position: absolute;
  top: -200px;
  right: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--primary-dim) 0%, transparent 65%);
  pointer-events: none;
}

/* Breadcrumb for SEO and navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-body-md);
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin-bottom: 48px;
  animation: fadeUp 0.5s ease both;
}

.breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb span {
  color: var(--text-secondary);
}

.case-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 28px;
  animation: fadeUp 0.5s ease both;
  animation-delay: 0.1s;
}

.case-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--primary);
}

.case-hero h1 {
  background: var(--white);
  font-size: var(--fs-h1);
  font-weight: 800;
  max-width: 860px;
  margin-bottom: 28px;
  animation: fadeUp 0.6s ease both;
  animation-delay: 0.2s;
}

.hero-sub {
  font-size: var(--font-2xl);
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.65;
  font-weight: 300;
  margin-bottom: 60px;
  animation: fadeUp 0.6s ease both;
  animation-delay: 0.3s;
}

.client-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 64px;
  animation: fadeUp 0.6s ease both;
  animation-delay: 0.4s;
}

.client-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 3px;
  border: 1px solid var(--border-hover);
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  background: var(--white);
  transition: all 0.2s;
}

.client-tag:hover {
  border-color: var(--primary-border);
  transform: translateY(-1px);
}

.client-tag.highlight {
  border-color: var(--primary-border);
  background: var(--primary-dim);
  color: var(--primary-light);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  max-width: 900px;
  animation: fadeUp 0.6s ease both;
  animation-delay: 0.5s;
}

.hero-stat {
  background: var(--white);
  padding: 32px 28px;
  transition: background 0.2s;
}

.hero-stat:hover {
  background: var(--white);
}

.hero-stat .num {
  font-family: 'Playfair Display', serif;
  font-size: var(--fs-h3);
  font-weight: 800;
  color: var(--text);
  display: block;
  margin-bottom: 6px;
  line-height: 1;
}

.hero-stat .num.accent {
  color: var(--primary);
}

.hero-stat .stat-label {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.4;
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════
   SITUATION SECTION
   ═══════════════════════════════════════════ */
.case-situation {
  background: var(--cream2);
  padding: 96px 0;
  border-top: 1px solid var(--border);
}

.situation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.situation-left h2 {
  font-size: var(--fs-h2);
  margin-bottom: 24px;
}

.situation-left p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: var(--fs-body);
  line-height: 1.75;
}

.situation-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding-top: 60px;
}

.pain-card {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s;
}

.pain-card:hover {
  border-color: var(--border-hover);
}

.pain-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  opacity: 0.5;
}

.pain-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: var(--fs-body-md);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.pain-card p {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   SCOPE SECTION
   ═══════════════════════════════════════════ */
.case-scope {
  background: var(--white);
  padding: 96px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.scope-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-bottom: 64px;
  align-items: end;
}

.scope-header h2 {
  font-size: var(--fs-h2);
}

.scope-header p {
  color: var(--text-secondary);
  font-size: var(--fs-body);
  line-height: 1.75;
}

.channels-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.channel-card {
  background: var(--white);
  padding: 40px 36px;
  position: relative;
  transition: background 0.2s;
}

.channel-card:hover {
  background: var(--white);
}

.channel-num {
  font-family: 'Playfair Display', serif;
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin-bottom: 20px;
  display: block;
}

.channel-card h3 {
  font-size: var(--font-3xl);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

.channel-card p {
  font-size: var(--fs-body);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.channel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.channel-tag {
  padding: 4px 10px;
  border-radius: 2px;
  font-size: var(--fs-label);
  letter-spacing: 0.04em;
  background: var(--white);
  color: var(--text-dim);
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.channel-tag:hover {
  border-color: var(--primary-border);
  color: var(--primary);
}

/* ═══════════════════════════════════════════
   HOW IT WORKS SECTION
   ═══════════════════════════════════════════ */
.case-how {
  background: var(--cream2);
  padding: 96px 0;
  border-top: 1px solid var(--border);
}

.how-header {
  max-width: 680px;
  margin-bottom: 64px;
}

.how-header h2 {
  font-size: var(--fs-h2);
  margin-bottom: 20px;
}

.how-header p {
  color: var(--text-secondary);
  font-size: var(--fs-body);
  line-height: 1.75;
}

.how-layers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.layer-card {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 36px 28px;
  transition:
    border-color 0.2s,
    transform 0.2s;
}

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

.layer-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-dim);
  border: 1px solid var(--primary-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-2xl);
  margin-bottom: 20px;
}

.layer-card h3 {
  font-size: var(--fs-body);
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.layer-card p {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.7;
}

.architecture-note {
  background: var(--cream);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: 4px;
  padding: 28px 32px;
  display: flex;
  align-items: start;
  gap: 20px;
}

.architecture-note-icon {
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}

.architecture-note h3 {
  font-size: var(--fs-body);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.architecture-note p {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   PULLQUOTE SECTION
   ═══════════════════════════════════════════ */
.case-pullquote {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--white);
  padding: 80px 0;
  text-align: center;
}

.pullquote {
  max-width: 760px;
  margin: 0 auto;
}

.pullquote p {
  font-family: 'Playfair Display', serif;
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* ═══════════════════════════════════════════
   OUTCOMES SECTION
   ═══════════════════════════════════════════ */
.case-outcomes {
  background: var(--cream2);
  padding: 96px 0;
  border-top: 1px solid var(--border);
}

.outcomes-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 64px;
}

.outcomes-header h2 {
  font-size: var(--fs-h2);
}

.outcomes-header p {
  color: var(--text-secondary);
  font-size: var(--fs-body);
  line-height: 1.75;
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.outcome-card {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 32px 28px;
  transition:
    border-color 0.2s,
    transform 0.2s;
}

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

.outcome-num {
  font-family: 'Playfair Display', serif;
  font-size: var(--fs-h2);
  font-weight: 800;
  color: var(--primary);
  display: block;
  line-height: 1;
  margin-bottom: 12px;
}

.outcome-card h3 {
  font-size: var(--fs-body);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.outcome-card p {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.65;
}

.outcomes-qualitative {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.qual-card {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 28px;
  display: flex;
  gap: 18px;
  align-items: start;
  transition: border-color 0.2s;
}

.qual-card:hover {
  border-color: var(--border-hover);
}

.qual-check {
  width: 24px;
  height: 24px;
  background: var(--primary-dim);
  border: 1px solid var(--primary-border);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-body-md);
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.qual-card h3 {
  font-size: var(--fs-body-md);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.qual-card p {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   WHAT THIS MEANS SECTION
   ═══════════════════════════════════════════ */
.case-meaning {
  background: var(--white);
  padding: 96px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.meaning-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.meaning-left h2 {
  font-size: var(--fs-h2);
  margin-bottom: 24px;
}

.meaning-left p {
  color: var(--text-secondary);
  font-size: var(--fs-body);
  line-height: 1.75;
  margin-bottom: 20px;
}

.meaning-right {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.meaning-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--white);
  align-items: start;
  transition: border-color 0.2s;
}

.meaning-item:hover {
  border-color: var(--border-hover);
}

.meaning-idx {
  font-family: 'Playfair Display', serif;
  font-size: var(--fs-label);
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.08em;
  flex-shrink: 0;
  padding-top: 2px;
}

.meaning-item h3 {
  font-size: var(--fs-body-md);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.meaning-item p {
  font-size: var(--fs-body-md);
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ═══════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════ */
.case-cta {
  background: var(--cream2);
  padding: 80px 0;
  text-align: center;
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.case-cta::before {
  background: var(--cream2);
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-dim) 0%, transparent 65%);
  pointer-events: none;
}

.case-cta h2 {
  background: var(--cream2);
  font-size: var(--fs-h2);
  max-width: 760px;
  margin: 0 auto 24px;
  position: relative;
  z-index: 1;
}

.case-cta p {
  background: var(--cream2);
  color: var(--text-secondary);
  font-size: var(--fs-body);
  max-width: 480px;
  margin: 0 auto 48px;
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn-large {
  background: var(--purple);
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 500;
  padding: 15px 30px;
  border-radius: 36px;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background 0.2s, transform 0.15s;
  display: inline-block;
}

.btn-large:hover {
  background: var(--purple-light);
  transform: translateY(-2px);
}

.cta-fine {
  font-size: var(--fs-body-md);
  color: var(--text-dim);
  letter-spacing: 0.02em;
  display: block;
  margin-top: 16px;
}

/* ═══════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════ */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ═══════════════════════════════════════════
   RESPONSIVE - TABLET
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .case-container {
    padding: 0 24px;
  }

  .case-hero {
    padding: 90px 0 60px;
  }

  .case-situation,
  .case-scope,
  .case-how,
  .case-outcomes,
  .case-meaning {
    padding: 64px 0;
  }

  .case-pullquote {
    padding: 60px 0;
  }

  .situation-grid,
  .scope-header,
  .outcomes-header,
  .meaning-grid,
  .outcomes-qualitative {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .how-layers,
  .outcomes-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ═══════════════════════════════════════════
   RESPONSIVE - MOBILE
   ═══════════════════════════════════════════ */
@media (max-width: 600px) {
  .case-container {
    padding: 0 16px;
  }

  .case-hero {
    padding: 90px 0 50px;
  }

  .case-situation,
  .case-scope,
  .case-how,
  .case-outcomes,
  .case-meaning,
  .case-cta {
    padding: 60px 0;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .client-tags {
    gap: 8px;
  }

  .btn-large {
    width: 100%;
    text-align: center;
  }
}

/* ═══════════════════════════════════════════
   PRINT STYLES FOR ACCESSIBILITY
   ═══════════════════════════════════════════ */
@media print {
  .case-hero::before,
  .case-cta::before {
    display: none;
  }

  .btn-large {
    border: 2px solid #000;
    color: #000;
    background: transparent;
  }
}