/* 3D Cinematic Coverflow Movie Stage Carousel */
.carousel-viewport {
  position: relative;
  width: 100%;
  height: 520px;
  margin: 1.5rem 0;
  overflow: visible;
  perspective: 1400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-cylinder-stage {
  position: relative;
  width: 440px;
  height: 480px;
  transform-style: preserve-3d;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card-3d {
  position: absolute;
  width: 440px;
  height: 480px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  user-select: none;
}

/* Card States in Movie Carousel */
.project-card-3d.card-active {
  transform: translateX(0) translateZ(0) rotateY(0deg) scale(1);
  opacity: 1;
  z-index: 10;
  filter: none;
  box-shadow: 0 25px 60px rgba(0, 98, 255, 0.25);
  border-color: var(--primary-cobalt);
}

.project-card-3d.card-prev {
  transform: translateX(-340px) translateZ(-160px) rotateY(25deg) scale(0.85);
  opacity: 0.65;
  z-index: 5;
  filter: blur(1px) brightness(0.85);
}

.project-card-3d.card-next {
  transform: translateX(340px) translateZ(-160px) rotateY(-25deg) scale(0.85);
  opacity: 0.65;
  z-index: 5;
  filter: blur(1px) brightness(0.85);
}

.project-card-3d.card-hidden {
  transform: translateX(0) translateZ(-350px) scale(0.65);
  opacity: 0;
  z-index: 1;
  pointer-events: none;
}

.project-thumb {
  width: 100%;
  height: 220px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-surface);
}

.project-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card-3d:hover .project-thumb-img {
  transform: scale(1.06);
}

.project-thumb-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(15, 23, 42, 0.85);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  color: var(--primary-cobalt);
  font-weight: 700;
  border: 1px solid rgba(0, 102, 255, 0.3);
  backdrop-filter: blur(8px);
}

.project-info h4 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.project-info p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.85rem;
  font-size: 0.92rem;
  color: var(--accent-amber);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.project-card-3d:hover .project-footer {
  color: var(--primary-cobalt);
}

.project-footer i {
  transition: transform 0.3s ease;
}

.project-card-3d:hover .project-footer i {
  transform: translateX(5px);
}

/* Big Navigation Buttons Placed Directly on Left & Right Sides */
.carousel-nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 20;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  font-size: 1.2rem;
  transition: var(--transition-smooth);
}

.carousel-nav-arrow.btn-prev {
  left: 20px;
}

.carousel-nav-arrow.btn-next {
  right: 20px;
}

.carousel-nav-arrow:hover {
  background: var(--primary-cobalt);
  color: #ffffff;
  border-color: var(--primary-cobalt);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 12px 30px rgba(0, 98, 255, 0.35);
}

@media (max-width: 900px) {
  .carousel-viewport {
    overflow: hidden;
    height: 480px;
    touch-action: pan-y pinch-zoom;
  }
  .carousel-cylinder-stage,
  .project-card-3d {
    width: min(320px, 86vw);
    height: 440px;
  }
  .project-card-3d.card-prev {
    transform: translateX(-140px) translateZ(-120px) rotateY(15deg) scale(0.85);
  }
  .project-card-3d.card-next {
    transform: translateX(140px) translateZ(-120px) rotateY(-15deg) scale(0.85);
  }
  .carousel-nav-arrow.btn-prev { left: 4px; }
  .carousel-nav-arrow.btn-next { right: 4px; }
}

@media (max-width: 480px) {
  .carousel-viewport {
    height: 460px;
  }
  .carousel-cylinder-stage,
  .project-card-3d {
    width: min(295px, 88vw);
    height: 430px;
    padding: 1.25rem;
  }
  .project-card-3d.card-prev {
    transform: translateX(-110px) translateZ(-100px) scale(0.8);
    opacity: 0.35;
  }
  .project-card-3d.card-next {
    transform: translateX(110px) translateZ(-100px) scale(0.8);
    opacity: 0.35;
  }
}

/* Interactive Case Study Details Modal */
.case-study-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 16, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.case-study-modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  max-width: 540px;
  width: 100%;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
  animation: modalFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.94) translateY(15px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close-btn {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.modal-close-btn:hover {
  background: var(--accent-amber);
  color: #fff;
  transform: rotate(90deg);
}

.modal-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: rgba(0, 98, 255, 0.1);
  color: var(--primary-cobalt);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.modal-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.4rem;
}

.modal-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-bottom: 1.4rem;
}

.modal-stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.8rem;
  text-align: center;
}

.modal-stat-box .stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-cobalt);
}

.modal-stat-box .stat-label {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.6rem;
}

.modal-tag-item {
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  color: var(--text-muted);
}