/* Case Studies Index */

/* Case Studies design tokens */
.tg-service-page--case-studies {
  --ai-navy-elev: #162a48;
  --ai-navy-border-h: rgba(0, 201, 177, 0.28);
  --ai-teal-bright: #00e2cc;
  --ai-teal-dim: rgba(0, 201, 177, 0.7);
  --ai-teal-faint: rgba(0, 201, 177, 0.08);
  --ai-teal-glow: rgba(0, 201, 177, 0.15);
  --ai-white-dim: rgba(240, 244, 250, 0.66);
  --ai-white-faint: rgba(240, 244, 250, 0.05);

  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-7: 32px;
  --s-8: 40px;
  --s-9: 48px;
  --s-10: 64px;
  --s-11: 80px;
  --s-12: 96px;

  --t-mono-xs: 0.62rem;

  --sh-md: 0 4px 14px rgba(0, 0, 0, 0.22);
  --sh-lg: 0 14px 40px rgba(0, 0, 0, 0.35), 0 2px 8px rgba(0, 0, 0, 0.18);
  --sh-inner: inset 0 1px 0 rgba(255, 255, 255, 0.03);

  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-pill: 999px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-base: 0.25s;
  --dur-slow: 0.4s;

  --section-pad-y: clamp(64px, 8vw, 120px);
  --section-pad-x: clamp(24px, 5vw, 60px);
  --content-max: 1400px;
}

.ai-cs-index-hero {
  display: block;
  min-height: auto;
  padding-top: clamp(140px, 18vh, 200px);
}

.ai-csi-filter-section {
  position: sticky;
  top: 76px;
  z-index: 50;
  background: rgba(11, 22, 40, 0.85);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-top: 1px solid var(--ai-navy-border);
  border-bottom: 1px solid var(--ai-navy-border);
  padding-top: var(--s-5) !important;
  padding-bottom: var(--s-5) !important;
}

.ai-csi-filter-bar {
  display: flex;
  gap: var(--s-2);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--s-4);
}

.ai-csi-pill {
  font-family: var(--ai-font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ai-white-dim);
  padding: 10px 22px;
  border: 1px solid var(--ai-navy-border);
  border-radius: var(--r-pill);
  background: var(--ai-navy-card);
  cursor: pointer;
  transition:
    background var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease),
    color var(--dur-base) var(--ease),
    transform var(--dur-base) var(--ease);
  white-space: nowrap;
}

.ai-csi-pill:hover {
  color: var(--ai-white);
  border-color: var(--ai-navy-border-h);
}

.ai-csi-pill.active {
  background: var(--ai-teal);
  color: var(--ai-navy);
  font-weight: 600;
  border-color: var(--ai-teal);
  box-shadow: 0 4px 16px rgba(0, 201, 177, 0.3);
}

.ai-csi-counter {
  text-align: center;
  font-family: var(--ai-font-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ai-white-dim);
}

.ai-csi-grid-section {
  padding-top: var(--s-11) !important;
}

.ai-csi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-6);
}

.ai-csi-card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--ai-navy-card) 0%, var(--ai-navy-mid) 100%);
  border: 1px solid var(--ai-navy-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--sh-md), var(--sh-inner);
  position: relative;
  text-decoration: none;
  color: inherit;
  transition:
    transform var(--dur-slow) var(--ease),
    border-color var(--dur-slow) var(--ease),
    box-shadow var(--dur-slow) var(--ease);
}

.ai-csi-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 30% 0%, rgba(0, 201, 177, 0.10) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
  pointer-events: none;
  z-index: 0;
}

.ai-csi-card:hover {
  transform: translateY(-6px);
  border-color: var(--ai-navy-border-h);
  box-shadow: var(--sh-lg), var(--sh-inner);
}

.ai-csi-card:hover::before {
  opacity: 1;
}

.ai-csi-card-thumb {
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 201, 177, 0.10) 0%, transparent 60%),
    linear-gradient(135deg, rgba(0, 201, 177, 0.05) 0%, rgba(11, 22, 40, 0.7) 100%);
  border-bottom: 1px solid var(--ai-navy-border);
  padding: var(--s-5);
  position: relative;
  z-index: 1;
}

.ai-csi-card-thumb svg {
  width: 100%;
  height: auto;
  display: block;
}

.ai-csi-card-body {
  padding: var(--s-7);
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
  z-index: 1;
}

.ai-csi-card-meta {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-4);
  flex-wrap: wrap;
}

.ai-csi-card-industry {
  font-family: var(--ai-font-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ai-teal);
}

.ai-csi-card-pillar {
  font-family: var(--ai-font-body);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ai-white-dim);
  padding: 3px 9px;
  background: rgba(0, 201, 177, 0.08);
  border: 1px solid rgba(0, 201, 177, 0.22);
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.ai-csi-card-headline {
  font-family: var(--ai-font-head);
  font-size: 1.18rem;
  font-weight: 500;
  line-height: 1.32;
  color: var(--ai-white);
  margin-bottom: var(--s-4);
  transition: color var(--dur-base) var(--ease);
}

.ai-csi-card:hover .ai-csi-card-headline {
  color: var(--ai-teal);
}

.ai-csi-card-summary {
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--ai-white-dim);
  margin-bottom: var(--s-6);
  flex: 1;
}

.ai-csi-card-link {
  font-family: var(--ai-font-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ai-teal);
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding-top: var(--s-4);
  border-top: 1px solid var(--ai-navy-border);
  transition: gap var(--dur-base) var(--ease), color var(--dur-base) var(--ease);
}

.ai-csi-card-link svg {
  width: 14px;
  height: 14px;
}

.ai-csi-card:hover .ai-csi-card-link {
  gap: var(--s-4);
  color: var(--ai-teal-bright);
}

.ai-csi-card.ai-hidden {
  display: none;
}

.ai-csi-empty {
  text-align: center;
  padding: var(--s-12) var(--s-6);
  color: var(--ai-white-dim);
}

.ai-csi-stats {
  background: var(--ai-navy-mid);
  border-top: 1px solid var(--ai-navy-border);
}

.ai-csi-industries-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-3);
}

.ai-csi-industries-list > span:first-child {
  font-family: var(--ai-font-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ai-white-dim);
  margin-right: var(--s-3);
}

.ai-csi-ind-chip {
  font-family: var(--ai-font-body);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ai-white);
  padding: 6px 14px;
  background: var(--ai-navy-card);
  border: 1px solid var(--ai-navy-border);
  border-radius: var(--r-pill);
}

@media (max-width: 1100px) {
  .ai-csi-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ai-csi-filter-section {
    top: 60px;
  }
}

@media (max-width: 768px) {
  .ai-csi-grid {
    grid-template-columns: 1fr;
  }

  .ai-csi-filter-section {
    top: 56px;
    padding-top: var(--s-3) !important;
    padding-bottom: var(--s-3) !important;
  }

  .ai-csi-filter-bar {
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0 var(--s-2);
    margin-left: -var(--s-2);
    margin-right: -var(--s-2);
  }

  .ai-csi-filter-bar::-webkit-scrollbar {
    display: none;
  }

  .ai-csi-pill {
    padding: 8px 16px;
    font-size: 0.78rem;
  }

  .ai-csi-counter {
    display: none;
  }

  .ai-csi-card-body {
    padding: var(--s-5);
  }
}

/* Case Studies layout corrections */

.tg-service-page--case-studies .ai-csi-grid-section {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: var(--section-pad-x) !important;
  padding-right: var(--section-pad-x) !important;
}

.tg-service-page--case-studies .ai-csi-grid {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  align-items: stretch;
}

.tg-service-page--case-studies .ai-csi-card {
  min-width: 0;
  height: 100%;
}

.tg-service-page--case-studies .ai-csi-card-thumb {
  aspect-ratio: 16 / 9;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.tg-service-page--case-studies .ai-csi-card-thumb svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tg-service-page--case-studies .ai-csi-card-body {
  padding: var(--s-7) !important;
  gap: 0;
}

.tg-service-page--case-studies .ai-csi-card-meta {
  margin-bottom: var(--s-4) !important;
}

.tg-service-page--case-studies .ai-csi-card-headline {
  margin-bottom: var(--s-4) !important;
}

.tg-service-page--case-studies .ai-csi-card-summary {
  margin-bottom: var(--s-6) !important;
}

.tg-service-page--case-studies .ai-csi-card-link {
  margin-top: auto;
}

/* Case Studies archive visual alignment */

.tg-service-page--case-studies {
  color: var(--ai-white);
  background: var(--ai-navy);
}

.tg-service-page--case-studies .ai-cs-index-hero {
  min-height: 62vh;
  padding-top: clamp(140px, 18vh, 200px);
  padding-bottom: 80px;
  background:
    radial-gradient(ellipse 70% 60% at 20% 40%, rgba(0, 201, 177, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 70% 60% at 90% 60%, rgba(0, 201, 177, 0.05) 0%, transparent 60%),
    var(--ai-navy);
}

.tg-service-page--case-studies .ai-hero-badge {
  border-radius: var(--r-pill);
  padding: 8px 20px;
  background: var(--ai-teal-faint);
  border: 1px solid rgba(0, 201, 177, 0.28);
  color: var(--ai-teal);
}

.tg-service-page--case-studies .ai-hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--ai-teal);
  box-shadow: 0 0 12px var(--ai-teal);
  animation: ai-csi-pulse 2s ease-in-out infinite;
}

@keyframes ai-csi-pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(0.75);
  }
}

.tg-service-page--case-studies .ai-hero-h1 {
  color: var(--ai-white) !important;
  font-size: clamp(2.6rem, 5.8vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
}

.tg-service-page--case-studies .ai-hero-h1 em {
  color: transparent !important;
  -webkit-text-fill-color: transparent !important;
  background: linear-gradient(180deg, var(--ai-teal) 0%, #5dd9c8 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.tg-service-page--case-studies .ai-hero-sub {
  max-width: 720px;
  color: var(--ai-white-dim) !important;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.78;
}

/* Sticky filter fix */

.tg-service-page--case-studies {
  overflow-x: clip;
}

.tg-service-page--case-studies .ai-csi-filter-section {
  position: sticky !important;
  top: 0;
  z-index: 800;

  max-width: none !important;
  width: 100%;

  padding: 20px var(--section-pad-x) !important;

  background: rgba(11, 22, 40, 0.94);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);

  border-top: 1px solid var(--ai-navy-border);
  border-bottom: 1px solid var(--ai-navy-border);
}

.tg-service-page--case-studies .ai-csi-filter-bar {
  max-width: var(--content-max);
  margin: 0 auto 16px;
}

.tg-service-page--case-studies .ai-csi-counter {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* JS Sticky fallback */

.tg-service-page--case-studies .ai-csi-filter-section.is-fixed {
  position: fixed !important;
  top: 76px;
  left: 0;
  right: 0;
  z-index: 800;

  max-width: none !important;
  width: 100% !important;

  padding: 20px var(--section-pad-x) !important;

  background: rgba(11, 22, 40, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);

  border-top: 1px solid var(--ai-navy-border);
  border-bottom: 1px solid var(--ai-navy-border);
}

.tg-service-page--case-studies .ai-csi-filter-marker {
  height: 0;
}

.tg-service-page--case-studies .ai-csi-filter-marker.active {
  height: 96px;
}

@media (max-width: 1024px) {
  .tg-service-page--case-studies .ai-csi-filter-section.is-fixed {
    top: 62px;
  }
}

@media (max-width: 768px) {
  .tg-service-page--case-studies .ai-csi-filter-section.is-fixed {
    top: 58px;
    padding-top: var(--s-3) !important;
    padding-bottom: var(--s-3) !important;
  }

  .tg-service-page--case-studies .ai-csi-filter-marker.active {
    height: 82px;
  }
}

/* KPI / Industries strip */

.tg-service-page--case-studies .ai-csi-stats {
  background: var(--ai-navy-mid);
  border-top: 1px solid var(--ai-navy-border);
  max-width: none;
  margin: 0;
  padding: var(--section-pad-y) var(--section-pad-x);
}

.tg-service-page--case-studies .ai-csi-stats-inner,
.tg-service-page--case-studies .ai-csi-kpis-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-7);
  max-width: var(--content-max);
  margin: 0 auto var(--s-9);
  padding-bottom: var(--s-9);
  border-bottom: 1px solid var(--ai-navy-border);
}

.tg-service-page--case-studies .ai-csi-stat,
.tg-service-page--case-studies .ai-csi-kpi {
  text-align: center;
  padding: var(--s-5);
  background: transparent;
  border: 0;
  box-shadow: none;
  transition: transform var(--dur-base) var(--ease);
}

.tg-service-page--case-studies .ai-csi-stat:hover,
.tg-service-page--case-studies .ai-csi-kpi:hover {
  transform: translateY(-3px);
}

.tg-service-page--case-studies .ai-csi-stat-val,
.tg-service-page--case-studies .ai-csi-kpi-value {
  display: block;
  font-family: var(--ai-font-head);
  font-size: clamp(2.6rem, 4.4vw, 3.4rem);
  font-weight: 300;
  line-height: 1;
  color: var(--ai-teal);
  letter-spacing: -0.02em;
  margin-bottom: var(--s-3);
}

.tg-service-page--case-studies .ai-csi-stat-label,
.tg-service-page--case-studies .ai-csi-kpi-label {
  display: block;
  font-family: var(--ai-font-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ai-white-dim);
  line-height: 1.6;
}

.tg-service-page--case-studies .ai-csi-industries-list {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* Case Studies archive — stats section reference alignment */

.tg-service-page--case-studies .ai-csi-stats {
  max-width: none;
  padding: var(--s-11) var(--section-pad-x);
  background: var(--ai-navy-mid);
  border-top: 1px solid var(--ai-navy-border);
}

.tg-service-page--case-studies .ai-csi-stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-6);
  max-width: var(--content-max);
  margin: 0 auto var(--s-9);
}

.tg-service-page--case-studies .ai-csi-stat {
  text-align: center;
  padding: var(--s-5);
  transition: transform var(--dur-base) var(--ease);
}

.tg-service-page--case-studies .ai-csi-stat:hover {
  transform: translateY(-3px);
}

.tg-service-page--case-studies .ai-csi-stat-val {
  font-family: var(--ai-font-head);
  font-size: clamp(2.6rem, 4.4vw, 3.4rem);
  font-weight: 300;
  line-height: 1;
  color: var(--ai-teal);
  letter-spacing: -0.02em;
  margin-bottom: var(--s-3);
}

.tg-service-page--case-studies .ai-csi-stat-val span {
  font-size: 0.5em;
  opacity: 0.6;
}

.tg-service-page--case-studies .ai-csi-stat-label {
  font-family: var(--ai-font-mono);
  font-size: var(--t-mono-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ai-white-dim);
  line-height: 1.6;
}

.tg-service-page--case-studies .ai-csi-ind-chip {
  transition:
    border-color var(--dur-base) var(--ease),
    color var(--dur-base) var(--ease);
}

.tg-service-page--case-studies .ai-csi-ind-chip:hover {
  border-color: var(--ai-navy-border-h);
  color: var(--ai-teal);
}

@media (max-width: 1100px) {
  .tg-service-page--case-studies .ai-csi-stats-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--s-5);
  }
}

@media (max-width: 640px) {
  .tg-service-page--case-studies .ai-csi-stats-inner {
    grid-template-columns: 1fr;
  }
}

/* Case Studies archive — card grid final alignment */

.tg-service-page--case-studies .ai-csi-card {
  display: flex;
  flex-direction: column;
}

.tg-service-page--case-studies .ai-csi-card-body {
  min-height: 320px;
}

.tg-service-page--case-studies .ai-csi-card-headline {
  font-size: 1.18rem;
  line-height: 1.32;
}

.tg-service-page--case-studies .ai-csi-card-summary {
  display: -webkit-box;
  overflow: hidden;
  -webkit-line-clamp: 4;
  line-clamp: 4;
  -webkit-box-orient: vertical;
}

@media (max-width: 1100px) {
  .tg-service-page--case-studies .ai-csi-card-body {
    min-height: 300px;
  }
}

@media (max-width: 768px) {
  .tg-service-page--case-studies .ai-csi-card-body {
    min-height: auto;
    padding: var(--s-5) !important;
  }

  .tg-service-page--case-studies .ai-csi-card-summary {
    -webkit-line-clamp: 5;
    line-clamp: 5;
  }
}

/* Case Studies archive — required for JS filtering */
.tg-service-page--case-studies .ai-csi-card.ai-hidden {
  display: none !important;
}

/* Case Studies archive — Load More */

.tg-service-page--case-studies .ai-csi-load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: var(--s-10);
}

.tg-service-page--case-studies .ai-csi-load-more {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  border: 0;
  border-radius: var(--r-md);
  background: var(--ai-teal);
  color: var(--ai-navy);
  cursor: pointer;
  font-family: var(--ai-font-body);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1;
  padding: 16px 32px;
  text-transform: uppercase;
  text-decoration: none;
  box-shadow: 0 10px 26px rgba(0, 201, 177, 0.22);
  transition:
    background var(--dur-base) var(--ease),
    transform var(--dur-base) var(--ease),
    gap var(--dur-base) var(--ease),
    box-shadow var(--dur-base) var(--ease);
}

.tg-service-page--case-studies .ai-csi-load-more:hover,
.tg-service-page--case-studies .ai-csi-load-more:focus-visible {
  background: var(--ai-teal-bright);
  color: var(--ai-navy);
  transform: translateY(-2px);
  gap: var(--s-4);
  box-shadow: 0 14px 34px rgba(0, 201, 177, 0.3);
}

.tg-service-page--case-studies .ai-csi-load-more[hidden] {
  display: none !important;
}

.tg-service-page--case-studies .ai-csi-load-more svg {
  width: 16px;
  height: 16px;
}

/* Case Studies archive — featured image thumbnail */

.tg-service-page--case-studies .ai-csi-card-thumb {
  aspect-ratio: 16 / 10;
  align-items: stretch;
  background: var(--ai-navy-card);
}

.tg-service-page--case-studies .ai-csi-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  filter: saturate(0.92) contrast(1.04);
  display: block;
  transition:
    transform 0.7s var(--ease),
    filter 0.7s var(--ease);
}

.tg-service-page--case-studies .ai-csi-card:hover .ai-csi-card-image {
  transform: scale(1.05);
  filter: saturate(1.05) contrast(1.08);
}

/* Image overlay to match design tone */

.tg-service-page--case-studies .ai-csi-card-thumb {
  position: relative;
  overflow: hidden;
}

/* subtle dark overlay */
.tg-service-page--case-studies .ai-csi-card-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(11, 22, 40, 0.05) 0%,
    rgba(11, 22, 40, 0.35) 100%
  );
  pointer-events: none;
}

/* normalize images */
.tg-service-page--case-studies .ai-csi-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter:
    saturate(0.9)
    contrast(1.05)
    brightness(0.92);
}

/* hover refinement */
.tg-service-page--case-studies .ai-csi-card:hover .ai-csi-card-image {
  filter:
    saturate(1)
    contrast(1.1)
    brightness(1);
}