/* Case Study Pages - Complete Theme-Integrated Design
   Built with existing design system for perfect cohesion */

/* ===============================================
   HERO SECTION - Apple-Inspired Design
   =============================================== */


.case-study-hero {
  background: transparent;
  padding: var(--space-20) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}

/* Add a light whitish veil for contrast */
.case-study-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.35),
    rgba(255, 255, 255, 0.15)
  ), 
  radial-gradient(circle at 20% 40%, rgba(255,255,255,0.25), transparent 70%);
  pointer-events: none;
  z-index: 1;
}

.case-study-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 60%, rgba(255,255,255,0.15), transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ensure text overlays above the white tint */
.case-study-hero > * {
  position: relative;
  z-index: 2;
}


.case-study-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.case-study-hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.case-study-hero__industry {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  width: fit-content;
}

.case-study-hero__title {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  color: var(--text);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
}

.case-study-hero__excerpt {
  font-size: var(--text-xl);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin: 0;
}

.case-study-hero__services {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.services-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.services-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.service-tag {
  padding: var(--space-1_5) var(--space-3);
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
}

.service-tag:hover {
  border-color: var(--color-primary-300);
  background: var(--color-primary-50);
  color: var(--color-primary-700);
}

.case-study-hero__actions {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-2);
}

.case-study-hero__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-study-hero__image {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  background: var(--surface-1);
  border: 1px solid var(--border-1);
}

.case-study-hero__image img {
  width: 100%;
  height: auto;
  display: block;
}

.case-study-hero__placeholder {
  width: 100%;
  max-width: 500px;
  aspect-ratio: 4 / 3;
  background: var(--surface-2);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  border: 2px dashed var(--color-gray-300);
}

/* ===============================================
   PROJECT OVERVIEW - Using Theme Card System
   =============================================== */

.case-study-overview {
  padding: var(--space-20) 0;
  background: transparent;
}

.overview__grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
}

.overview__content h2 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--text);
  margin-bottom: var(--space-8);
  line-height: var(--leading-tight);
}

.content-formatted {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
}

.content-formatted p {
  margin-bottom: var(--space-6);
}

.content-formatted h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.content-formatted ul, 
.content-formatted ol {
  margin-left: var(--space-6);
  margin-bottom: var(--space-6);
}

.content-formatted li {
  margin-bottom: var(--space-2);
  line-height: var(--leading-relaxed);
}

.overview__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* Using theme's card system */
.project-details {
  background: var(--surface-2);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  border: 1px solid var(--border-1);
  box-shadow: var(--shadow-sm);
}

.project-details h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-6);
}

.detail-group {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-1);
}

.detail-group:last-child {
  border-bottom: none;
}

.detail-label {
  font-weight: var(--font-medium);
  color: var(--text-muted);
  font-size: var(--text-sm);
  min-width: 120px;
}

.detail-value {
  text-align: right;
  color: var(--text);
  font-size: var(--text-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.service-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius);
  margin-bottom: var(--space-1);
}

.project-metrics {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-1);
}

.project-metrics h4 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-4);
}

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-3);
  background: var(--surface-1);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-1);
  margin-bottom: var(--space-3);
}

.metric-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-600);
  line-height: var(--leading-none);
}

.metric-label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-top: var(--space-1);
}

.case-study-cta {
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-200);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.case-study-cta h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-3);
}

.case-study-cta p {
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}

.case-study-cta .btn {
  margin-bottom: var(--space-3);
}

/* ===============================================
   GALLERY SECTION - Modern Masonry Layout
   =============================================== */

.case-study-gallery {
  padding: var(--space-20) 0;
  background: transparent;
  position: relative;
}

.case-study-gallery::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
}

/* Modern responsive grid */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-16);
}

.gallery__grid--empty {
  grid-template-columns: 1fr;
  justify-items: center;
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--surface-1) 0%, var(--surface-2) 100%);
  border-radius: var(--radius-2xl);
  border: 2px dashed var(--color-gray-300);
  margin: var(--space-8) 0;
  position: relative;
  overflow: hidden;
}

.gallery__grid--empty::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23f3f4f6' fill-opacity='0.2'%3E%3Ccircle cx='20' cy='20' r='2'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

/* Enhanced gallery items */
.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  box-shadow: var(--shadow-sm);
}

.gallery-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-primary-300);
}

.gallery-item:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 4px;
}

.gallery-item--lazy {
  background: linear-gradient(45deg, 
    var(--color-gray-100) 25%, 
    var(--color-gray-200) 25%, 
    var(--color-gray-200) 50%, 
    var(--color-gray-100) 50%, 
    var(--color-gray-100) 75%, 
    var(--color-gray-200) 75%);
  background-size: 20px 20px;
  animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
  0% { background-position: 0 0; }
  100% { background-position: 40px 40px; }
}

.gallery-item__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all var(--transition-normal);
  opacity: 0;
}

.gallery-item__image--loaded {
  opacity: 1;
}

.gallery-item__image--error {
  opacity: 0.5;
  filter: grayscale(100%);
}

.gallery-item__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(var(--color-primary-500), 0.8), 
    rgba(var(--color-primary-600), 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  backdrop-filter: blur(4px);
}

.gallery-item:hover .gallery-item__overlay,
.gallery-item:focus .gallery-item__overlay {
  opacity: 1;
}

.gallery-item__zoom-icon {
  color: var(--color-white);
  transform: scale(1);
  transition: transform var(--transition-fast);
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

.gallery-item:hover .gallery-item__zoom-icon {
  transform: scale(1.2);
}

/* Enhanced empty state */
.gallery-empty-state {
  text-align: center;
  padding: var(--space-16);
  color: var(--text-muted);
  position: relative;
  z-index: 2;
}

.gallery-empty-state::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-600));
  border-radius: var(--radius-full);
}

.gallery-empty-state__icon {
  color: var(--color-primary-400);
  margin-bottom: var(--space-8);
  filter: drop-shadow(0 4px 8px rgba(var(--color-primary-500), 0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.gallery-empty-state__title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text);
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-gray-900), var(--color-gray-700));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gallery-empty-state__description {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  max-width: 500px;
  margin: 0 auto;
  color: var(--text-muted);
}

/* ===============================================
   PROCESS TIMELINE - Revolutionary Design
   =============================================== */

.case-study-process {
  padding: var(--space-20) 0;
  background: transparent;
  position: relative;
  overflow: hidden;
}

/* Animated background pattern */
.case-study-process::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 200%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23e5e7eb' stroke-width='1' opacity='0.3'%3E%3Cpath d='M30 0v60M0 30h60'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.5;
}

.process__timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
  position: relative;
  z-index: 2;
}

/* Flowing connection line */
.process__timeline::after {
  content: '';
  position: absolute;
  left: calc(var(--space-20) / 2 + var(--space-2));
  top: var(--space-10);
  bottom: var(--space-10);
  width: 3px;
  background: linear-gradient(to bottom, 
    var(--color-primary-300), 
    var(--color-primary-500), 
    var(--color-primary-600), 
    var(--color-primary-500), 
    var(--color-primary-300));
  border-radius: var(--radius-full);
  box-shadow: 0 0 20px rgba(var(--color-primary-500), 0.3);
  z-index: 1;
}

.process-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  position: relative;
  z-index: 2;
  transition: all var(--transition-normal);
}

.process-step:hover {
  transform: translateX(12px);
}

/* Enhanced step numbers */
.process-step__number {
  width: var(--space-24);
  height: var(--space-24);
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--color-white);
  position: relative;
  transition: all var(--transition-normal);
  z-index: 3;
}

.process-step__number::before {
  content: '';
  position: absolute;
  inset: -4px;
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-primary-700));
  border-radius: 50%;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.process-step:hover .process-step__number::before {
  opacity: 1;
}

.process-step:hover .process-step__number {
  transform: scale(1.15) rotate(8deg);
  box-shadow: var(--shadow-2xl);
}

/* Enhanced content cards */
.process-step__content {
  background: var(--surface-1);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-1);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.process-step__content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-600));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.process-step:hover .process-step__content::before {
  transform: scaleX(1);
}

.process-step:hover .process-step__content {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--color-primary-200);
}

.process-step__content h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
}

.process-step__content p {
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin: 0;
}

/* ===============================================
   TECHNICAL SPECIFICATIONS
   =============================================== */

.case-study-specs {
  padding: var(--space-20) 0;
  background: var(--surface-2);
}

.specs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-16);
}

.spec-category {
  background: var(--surface-1);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-1);
  transition: all var(--transition-normal);
}

.spec-category:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-200);
}

.spec-category h3 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary-100);
}

.spec-category ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.spec-category li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  margin-bottom: var(--space-2);
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  transition: all var(--transition-fast);
}

.spec-category li:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  transform: translateX(4px);
}

.spec-category li::before {
  content: '✓';
  color: var(--color-success-600);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
  flex-shrink: 0;
  width: var(--space-6);
  height: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-success-100);
  border-radius: 50%;
}

/* ===============================================
   CLIENT TESTIMONIAL
   =============================================== */

.case-study-testimonial {
  padding: var(--space-20) 0;
  background: transparent;
  position: relative;
  overflow: hidden;
}

.case-study-testimonial::before {
  content: '"';
  position: absolute;
  top: var(--space-8);
  left: var(--space-8);
  font-size: 200px;
  font-family: Georgia, serif;
  color: var(--color-primary-100);
  z-index: 1;
  line-height: 0.8;
}

.testimonial__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.testimonial__quote {
  font-size: var(--text-2xl);
  color: var(--text);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  font-style: italic;
}

.testimonial__footer {
  display: flex;
  justify-content: center;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.testimonial__avatar {
  width: var(--space-16);
  height: var(--space-16);
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-white);
  box-shadow: var(--shadow-md);
}

.testimonial__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.testimonial__author-info {
  text-align: left;
}

.testimonial__name {
  display: block;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin-bottom: var(--space-1);
}

.testimonial__company {
  font-size: var(--text-base);
  color: var(--text-muted);
}

/* ===============================================
   RELATED PROJECTS - Using Theme Card System
   =============================================== */

.case-study-related {
  padding: var(--space-20) 0;
  background: var(--surface-1);
}

.related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-16);
}

.related__grid--empty {
  grid-template-columns: 1fr;
  justify-items: center;
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--surface-2) 0%, var(--surface-1) 100%);
  border-radius: var(--radius-2xl);
  border: 2px dashed var(--color-gray-300);
  margin: var(--space-8) 0;
  position: relative;
}

/* Enhanced project cards using theme system */
.related-project {
  background: var(--surface-1);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-1);
  transition: all var(--transition-normal);
  position: relative;
}

.related-project::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-600));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.related-project:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-primary-200);
}

.related-project:hover::before {
  transform: scaleX(1);
}

.related-project__image {
  height: 200px;
  overflow: hidden;
}

.related-project__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.related-project:hover .related-project__image img {
  transform: scale(1.05);
}

.related-project__content {
  padding: var(--space-6);
}

.related-project__industry {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-3);
}

.related-project__title {
  margin-bottom: var(--space-3);
}

.related-project__title a {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.related-project__title a:hover {
  color: var(--color-primary-600);
}

.related-project__excerpt {
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.related-project__services {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Enhanced empty state for related projects */
.related-empty-state {
  text-align: center;
  padding: var(--space-16);
  color: var(--text-muted);
  position: relative;
}

.related-empty-state::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary-400), var(--color-primary-600));
  border-radius: var(--radius-full);
}

.related-empty-state__icon {
  color: var(--color-primary-400);
  margin-bottom: var(--space-8);
  filter: drop-shadow(0 4px 8px rgba(var(--color-primary-500), 0.2));
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

.related-empty-state__title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text);
  margin-bottom: var(--space-4);
}

.related-empty-state__description {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  max-width: 500px;
  margin: 0 auto var(--space-8);
  color: var(--text-muted);
}

.related-empty-state__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--radius-full);
  font-weight: var(--font-medium);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.related-empty-state__cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
}

/* ===============================================
   CTA SECTION
   =============================================== */

/* Case Study CTA — hero-style paint, same markup */
.case-study-cta-section {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  color: var(--color-white);
  padding: var(--space-4xl) 0;

  /* layered dark base with brand glows */
  background: transparent;

  box-shadow: 0 8px 30px rgba(0,0,0,.25);
}

/* Tech grid overlay */

/* Gentle cinematic sweep */

/* Background image support for case study CTA */
.case-study-cta-section--image {
  background: none;
}

.case-study-cta-section__image-container {
  position: absolute;
  top: -10%;
  left: 0;
  right: 0;
  height: 120%;
  overflow: hidden;
  z-index: 0;
}

.case-study-cta-section__parallax-image {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  min-width: 100%;
  min-height: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
  will-change: transform;
  transition: transform 0.1s ease-out;
  z-index: -1;
}

@media (max-width: 768px) {
  .case-study-cta-section__image-container {
    top: -5%;
    height: 110%;
  }
}

@media (max-width: 480px) {
  .case-study-cta-section__image-container {
    top: 0%;
    height: 100%;
  }
}

.case-study-cta-section .cta__content {
  position: relative;
  z-index: 2;
}

.case-study-cta-section--image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.75) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.7) 100%);
  z-index: 1;
  pointer-events: none;
}

.case-study-cta-section--image .cta__title {
  color: var(--color-white);
}

.case-study-cta-section--image .cta__subtitle {
  color: rgba(255, 255, 255, 0.9);
}

/* Content above overlays */
.cta__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

/* Hero-grade title */
.cta__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: var(--font-extrabold);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xl);
  color: #ffffff;
  animation: caseStudyTitleFade 700ms ease-out 100ms both;
  text-shadow: 0 2px 14px rgba(0,0,0,.3);
}
@keyframes caseStudyTitleFade { from { opacity:0; transform: translateY(12px) } to { opacity:1; transform:none } }

/* Subtitle */
.cta__subtitle {
  font-size: clamp(1rem, 2.6vw, 1.25rem);
  color: rgba(255,255,255,.9);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3xl);
  font-weight: var(--font-medium);
  text-shadow: 0 2px 10px rgba(0,0,0,.35);
}

/* Actions (keep your buttons) */
.cta__actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}
.cta__actions .btn {
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out);
}
.cta__actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px -10px rgba(255, 255, 255,.45);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .case-study-cta-section::after { animation: none !important; }
  .cta__title { animation: caseStudyTitleFade 1ms linear both !important; }
}


/* ===============================================
   ENHANCED LIGHTBOX MODAL
   =============================================== */

.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(8px);
  padding: var(--space-4);
}

.lightbox__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.lightbox__content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  background: var(--surface-1);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  display: flex;
  flex-direction: column;
}

.lightbox__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-1);
}

.lightbox__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text);
  margin: 0;
}

.lightbox__close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius);
  transition: all var(--transition-fast);
}

.lightbox__close:hover,
.lightbox__close:focus {
  background: var(--surface-2);
  color: var(--text);
  outline: none;
}

.lightbox__body {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  background: var(--color-gray-900);
}

.lightbox__image-container {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  overflow: hidden;
}

.lightbox__image {
  max-width: 100%;
  max-height: 70vh;
  width: auto;
  height: auto;
  cursor: zoom-in;
  transition: transform var(--transition-normal);
}

.lightbox__loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-primary-500);
}

.lightbox__spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.lightbox__controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-4);
  pointer-events: none;
}

.lightbox__nav {
  background: rgba(255, 255, 255, 0.9);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  pointer-events: all;
  transition: all var(--transition-fast);
  backdrop-filter: blur(4px);
  box-shadow: var(--shadow-md);
}

.lightbox__nav:hover,
.lightbox__nav:focus {
  background: var(--surface-1);
  box-shadow: var(--shadow-lg);
  outline: none;
  transform: scale(1.1);
}

.lightbox__nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

.lightbox__footer {
  padding: var(--space-4) var(--space-6);
  background: var(--surface-2);
  border-top: 1px solid var(--border-1);
}

.lightbox__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.lightbox__counter {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-muted);
}

.lightbox__caption {
  font-size: var(--text-sm);
  color: var(--text);
  flex: 1;
  text-align: right;
}

/* ===============================================
   RESPONSIVE DESIGN - Mobile First
   =============================================== */

@media (max-width: 768px) {
  .case-study-hero {
    padding: var(--space-16) 0 var(--space-12);
  }
  
  .case-study-hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .case-study-hero__title {
    font-size: var(--text-4xl);
  }
  
  .case-study-hero__excerpt {
    font-size: var(--text-lg);
  }
  
  .case-study-hero__actions {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .overview__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .process__timeline::after {
    left: calc(var(--space-16) / 2 + var(--space-2));
  }
  
  .process-step {
    grid-template-columns: auto 1fr;
    gap: var(--space-4);
  }
  
  .process-step:hover {
    transform: translateX(6px);
  }
  
  .process-step__number {
    width: var(--space-16);
    height: var(--space-16);
    font-size: var(--text-lg);
  }
  
  .process-step__content {
    padding: var(--space-6);
  }
  
  .process-step__content h3 {
    font-size: var(--text-xl);
  }
  
  .process-step__content p {
    font-size: var(--text-base);
  }
  
  .specs__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .related__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .gallery__grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-4);
  }
  
  .cta__title {
    font-size: var(--text-3xl);
  }
  
  .cta__actions {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .testimonial__author {
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }
  
  .testimonial__author-info {
    text-align: center;
  }
  
  .testimonial__quote {
    font-size: var(--text-xl);
  }
  
  .gallery-empty-state,
  .related-empty-state {
    padding: var(--space-12);
  }
  
  .gallery-empty-state__title,
  .related-empty-state__title {
    font-size: var(--text-2xl);
  }
  
  .gallery-empty-state__description,
  .related-empty-state__description {
    font-size: var(--text-base);
  }
  
  .lightbox__content {
    max-width: 95vw;
    max-height: 95vh;
    margin: var(--space-4);
  }
  
  .lightbox__header,
  .lightbox__footer {
    padding: var(--space-3) var(--space-4);
  }
  
  .lightbox__image {
    max-height: 60vh;
  }
  
  .lightbox__controls {
    padding: 0 var(--space-2);
  }
  
  .lightbox__nav {
    width: 40px;
    height: 40px;
  }
  
  .lightbox__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
  
  .lightbox__caption {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .case-study-hero {
    padding: var(--space-12) 0 var(--space-8);
  }
  
  .case-study-overview,
  .case-study-gallery,
  .case-study-process,
  .case-study-specs,
  .case-study-testimonial,
  .case-study-related,
  .case-study-cta-section {
    padding: var(--space-12) 0;
  }
  
  .case-study-hero__title {
    font-size: var(--text-3xl);
  }
  
  .process__timeline::after {
    left: calc(var(--space-12) / 2 + var(--space-2));
  }
  
  .process-step__number {
    width: var(--space-12);
    height: var(--space-12);
    font-size: var(--text-base);
  }
  
  .gallery__grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-empty-state,
  .related-empty-state {
    padding: var(--space-8);
  }
  
  .gallery-empty-state__icon,
  .related-empty-state__icon {
    width: 60px;
    height: 60px;
  }
  
  .project-details,
  .case-study-cta,
  .spec-category,
  .process-step__content {
    padding: var(--space-6);
  }
}

/* ===============================================
   ANIMATION & ACCESSIBILITY
   =============================================== */

/* AOS attributes kept for markup compatibility; no AOS library is loaded, so
   content is always visible (no fade-in that would wait on a missing script). */
[data-aos] {
  opacity: 1;
}

[data-aos].aos-animate {
  opacity: 1;
}

/* Force visibility for case study sections as fallback */
.case-study-gallery,
.case-study-process,
.case-study-related {
  opacity: 1 !important;
  visibility: visible !important;
}

/* Ensure sections are visible even if AOS fails */
.case-study-gallery[data-aos],
.case-study-process[data-aos],
.case-study-related[data-aos] {
  /* Use more specific selector to override AOS */
  opacity: 1 !important;
}

[data-aos="fade-up"] {
  transform: translateY(var(--space-8));
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .gallery-item:hover {
    transform: none;
  }
  
  .process-step:hover {
    transform: none;
  }
  
  .related-project:hover {
    transform: translateY(0);
  }
}

/* Focus management */
.gallery-item:focus,
.lightbox__close:focus,
.related-empty-state__cta:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .gallery-item,
  .process-step__content,
  .spec-category,
  .related-project {
    border-width: 2px;
  }
  
  .process-step__number {
    border-width: 3px;
  }
}