/**
 * RunYourGTM — Dedicated Case Study Stylesheet
 * High-craft editorial layout (Substack / Stripe Press aesthetic)
 * Fully responsive across 390px, 768px, 1440px with zero horizontal scroll.
 */

/* ==========================================================================
   Page Container & Reading Geometry
   ========================================================================== */

.case-study-main {
  padding-top: calc(72px + var(--section-gap) * 0.35);
  padding-bottom: var(--section-gap);
  background-color: var(--color-canvas-bg, #F7F5F0);
  min-height: 100vh;
}

.case-container {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

/* Breadcrumb / Back Bar */
.case-back-bar {
  margin-bottom: 2.25rem;
}

.case-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono, monospace);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--color-ink-secondary, #52504C);
  text-decoration: none;
  transition: color 0.18s ease, transform 0.18s ease;
}

.case-back-link:hover {
  color: var(--color-ink-primary, #1A1917);
  transform: translateX(-3px);
}

.case-back-link svg {
  stroke-width: 2.25;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.case-hero {
  margin-bottom: 3.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border-light, #E5E2DC);
}

.case-sector-label {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-text, #46516A);
  display: inline-block;
  margin-bottom: 1rem;
}

.case-hero-title {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: clamp(2.25rem, 5vw, 3.625rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--color-ink-primary, #1A1917);
  margin: 0 0 1.25rem 0;
  text-wrap: balance;
}

.case-hero-sub {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: clamp(1.125rem, 2vw, 1.3125rem);
  line-height: 1.55;
  color: var(--color-ink-secondary, #52504C);
  margin: 0 0 1.75rem 0;
  text-wrap: pretty;
}

/* Metadata Bar: Engagement / Sector / Outcome */
.case-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem 2.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-border-subtle, #ECE9E2);
  margin-top: 1.5rem;
}

.case-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.case-meta-label {
  font-family: var(--font-mono, monospace);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted, #7A7771);
}

.case-meta-value {
  font-family: var(--font-clean, "Plus Jakarta Sans", sans-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-ink-primary, #1A1917);
}

/* ==========================================================================
   The Chaos Section
   ========================================================================== */

.case-chaos-block {
  margin-bottom: 3.5rem;
}

.case-chaos-block h2 {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 500;
  color: var(--color-ink-primary, #1A1917);
  letter-spacing: -0.015em;
  margin: 0 0 1rem 0;
}

.case-chaos-lead {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 1.1875rem;
  line-height: 1.68;
  color: var(--color-ink-primary, #1A1917);
  margin: 0;
}

/* ==========================================================================
   Executive Impact Strip (Minimalist, Non-Card Format)
   ========================================================================== */

.case-impact-strip {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-light, #E5E2DC);
  border-radius: var(--card-radius-md, 16px);
  padding: 2.25rem;
  margin-bottom: 4rem;
  box-shadow: 0 4px 24px rgba(26, 25, 23, 0.03);
}

.case-impact-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--color-border-subtle, #ECE9E2);
  padding-bottom: 1rem;
  margin-bottom: 1.75rem;
}

.case-impact-title {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-ink-primary, #1A1917);
  margin: 0;
}

.case-impact-timeframe {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent-text, #46516A);
}

.case-impact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.case-impact-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: baseline;
}

.case-impact-num {
  font-family: var(--font-mono, monospace);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent-text, #46516A);
}

.case-impact-text {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-ink-secondary, #52504C);
}

.case-impact-text strong {
  color: var(--color-ink-primary, #1A1917);
  font-weight: 600;
}

/* ==========================================================================
   The Chronological Journey (Editorial Article Content)
   ========================================================================== */

.case-journey-header {
  margin-top: 1rem;
  margin-bottom: 2.5rem;
}

.case-journey-header h2 {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-ink-primary, #1A1917);
  margin: 0 0 0.5rem 0;
}

.case-journey-divider {
  border: none;
  border-top: 1px solid var(--color-border-light, #E5E2DC);
  margin: 3.5rem 0;
}

.case-phase {
  margin-bottom: 3.5rem;
  position: relative;
}

.case-phase-badge {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-text, #46516A);
  margin-bottom: 0.5rem;
  display: block;
}

.case-phase h3 {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--color-ink-primary, #1A1917);
  margin: 0 0 1rem 0;
}

.case-phase-lead {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 1.125rem;
  line-height: 1.68;
  color: var(--color-ink-primary, #1A1917);
  margin-bottom: 1.5rem;
}

.case-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
}

.case-bullets li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1.125rem;
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 1.0625rem;
  line-height: 1.68;
  color: var(--color-ink-secondary, #52504C);
}

.case-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent, #46516A);
}

.case-bullets li strong {
  color: var(--color-ink-primary, #1A1917);
  font-weight: 600;
}

/* ==========================================================================
   Content Arsenal Interactive Carousel
   ========================================================================== */

.case-carousel-block {
  margin: 2.5rem 0 3.5rem 0;
  background: #FFFFFF;
  border: 1px solid var(--color-border-light, #E5E2DC);
  border-radius: var(--card-radius-md, 16px);
  padding: 1.75rem;
  box-shadow: 0 4px 20px rgba(26, 25, 23, 0.03);
}

.case-carousel-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.25rem;
}

.case-carousel-title {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink-primary, #1A1917);
  margin: 0;
}

.case-carousel-counter {
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  color: var(--color-ink-muted, #7A7771);
}

/* Stage & Slides */
.case-carousel-viewport {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  background-color: #F0EDE6;
  border: 1px solid var(--color-border-subtle, #ECE9E2);
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-carousel-slides {
  display: flex;
  width: 100%;
  transition: transform 0.4s var(--transition-smooth-reveal, cubic-bezier(0.16, 1, 0.3, 1));
}

.case-carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  box-sizing: border-box;
}

.case-carousel-slide.is-active {
  display: flex;
}

.case-carousel-img-wrap {
  width: 100%;
  max-width: 640px;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-in;
}

.case-carousel-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.case-carousel-caption {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 0.875rem;
  color: var(--color-ink-secondary, #52504C);
  text-align: center;
  margin-top: 1rem;
}

/* Carousel Nav Toolbar */
.case-carousel-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-subtle, #ECE9E2);
}

.case-carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.case-carousel-dot {
  width: 28px;
  height: 4px;
  border-radius: 2px;
  border: none;
  background-color: var(--color-border-light, #E5E2DC);
  padding: 0;
  cursor: pointer;
  transition: background-color 0.2s ease, width 0.2s ease;
}

.case-carousel-dot.is-active {
  background-color: var(--color-accent, #46516A);
  width: 40px;
}

.case-carousel-arrows {
  display: flex;
  gap: 0.5rem;
}

.case-carousel-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-border-light, #E5E2DC);
  background: #FFFFFF;
  color: var(--color-ink-primary, #1A1917);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.case-carousel-btn:hover {
  background-color: #F7F5F0;
  border-color: var(--color-accent, #46516A);
  transform: translateY(-1px);
}

.case-carousel-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

/* ==========================================================================
   Operator's Note Callout
   ========================================================================== */

.case-operator-note {
  background-color: #FFFFFF;
  border-left: 3px solid var(--color-accent, #46516A);
  border-radius: 0 var(--card-radius-sm, 8px) var(--card-radius-sm, 8px) 0;
  padding: 2rem 2.25rem;
  margin: 3.5rem 0;
  box-shadow: 0 4px 18px rgba(26, 25, 23, 0.03);
}

.case-operator-label {
  font-family: var(--font-mono, monospace);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-text, #46516A);
  margin-bottom: 0.75rem;
  display: block;
}

.case-operator-quote {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 1.125rem;
  font-style: italic;
  line-height: 1.68;
  color: var(--color-ink-primary, #1A1917);
  margin: 0 0 1rem 0;
}

.case-operator-author {
  font-family: var(--font-clean, "Plus Jakarta Sans", sans-serif);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink-secondary, #52504C);
  margin: 0;
}

/* ==========================================================================
   Next Story Navigation Strip
   ========================================================================== */

.case-next-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin: 4rem 0 2rem 0;
  padding-top: 2.5rem;
  border-top: 1px solid var(--color-border-light, #E5E2DC);
}

.case-nav-tile {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-light, #E5E2DC);
  border-radius: var(--card-radius-md, 12px);
  padding: 1.5rem;
  text-decoration: none;
  transition: transform 0.2s var(--transition-spring-weighty), border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.case-nav-tile:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent, #46516A);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
}

.case-nav-dir {
  font-family: var(--font-mono, monospace);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted, #7A7771);
  margin-bottom: 0.35rem;
}

.case-nav-title {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-ink-primary, #1A1917);
  margin: 0 0 0.25rem 0;
}

.case-nav-sub {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 0.875rem;
  color: var(--color-ink-secondary, #52504C);
  margin: 0;
}

/* ==========================================================================
   Action Close Section
   ========================================================================== */

.case-action-section {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border-light, #E5E2DC);
  border-radius: var(--card-radius-md, 16px);
  padding: 3rem 2.5rem;
  margin: 3.5rem 0 2rem 0;
  text-align: center;
}

.case-action-title {
  font-family: var(--font-display, "Bricolage Grotesque", sans-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.375rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-ink-primary, #1A1917);
  margin: 0 0 0.75rem 0;
  text-wrap: balance;
}

.case-action-sub {
  font-family: var(--font-body, "Karla", sans-serif);
  font-size: 1.125rem;
  color: var(--color-ink-secondary, #52504C);
  margin: 0 0 2rem 0;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

.case-action-btns {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Primary Button (Ember) */
.btn-ember-action {
  background-color: var(--color-primary, #FF5500);
  color: #1A1917;
  font-family: var(--font-clean, "Plus Jakarta Sans", sans-serif);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.8125rem 1.75rem;
  border-radius: var(--rounded-lg, 50px);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.btn-ember-action:hover {
  background-color: var(--color-ember-hover, #FF661A);
  transform: translateY(-1px);
}

/* Secondary Button (Slate Border) */
.btn-subtle-action {
  background-color: transparent;
  color: var(--color-ink-primary, #1A1917);
  border: 1px solid var(--color-border-light, #E5E2DC);
  font-family: var(--font-clean, "Plus Jakarta Sans", sans-serif);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.8125rem 1.75rem;
  border-radius: var(--rounded-lg, 50px);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.btn-subtle-action:hover {
  background-color: #F7F5F0;
  border-color: var(--color-accent, #46516A);
  transform: translateY(-1px);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 640px) {
  .case-container {
    padding: 0 1.25rem;
  }

  .case-impact-strip {
    padding: 1.5rem;
  }

  .case-carousel-block {
    padding: 1.25rem;
  }

  .case-carousel-viewport {
    min-height: 280px;
  }

  .case-carousel-img-wrap {
    height: 260px;
  }

  .case-operator-note {
    padding: 1.5rem 1.25rem;
  }

  .case-next-strip {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .case-action-section {
    padding: 2.25rem 1.25rem;
  }

  .case-action-btns {
    flex-direction: column;
    width: 100%;
  }

  .btn-ember-action,
  .btn-subtle-action {
    width: 100%;
    justify-content: center;
    box-sizing: border-box;
  }
}