/* =========================================================
   PREVIEW FOLLOWER (Mouse-attached preview)
========================================================= */
.preview-follower {
  display: none !important;
}

#previewImage {
  width: 100%;
  height: 100%;
  object-fit: cover;
  image-rendering: crisp-edges;
  image-rendering: -webkit-optimize-contrast;
}

/* =========================================================
   PARALLAX IMAGE EFFECT
========================================================= */
.parallax-image {
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.featured-card:hover .parallax-image {
  transform: scale(1.1);
}

/* =========================================================
   EXPANDABLE PROJECT CARDS
========================================================= */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 3rem 0;
}

.project-card {
  background: var(--card-bg);
  border-radius: 20px;
  border: 1px solid rgba(124, 166, 126, 0.1);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.project-header {
  cursor: pointer;
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: linear-gradient(135deg, rgba(124, 166, 126, 0.08), rgba(124, 166, 126, 0.04));
  border-radius: 12px;
  border: 1px solid rgba(124, 166, 126, 0.15);
  margin-bottom: 0.5rem;
}

.project-header:hover {
  background: linear-gradient(135deg, rgba(124, 166, 126, 0.15), rgba(124, 166, 126, 0.08));
  border-color: rgba(124, 166, 126, 0.3);
  transform: translateX(8px);
}

.project-header h3 {
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  transition: color 0.3s ease;
}

.project-header:hover h3 {
  color: var(--accent);
}

.collapsible-icon {
  font-size: 1rem;
  color: rgba(124, 166, 126, 0.6);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.3s ease;
  flex-shrink: 0;
  margin-left: 1.5rem;
}

.project-header:hover .collapsible-icon {
  color: var(--accent);
}

.project-header.active .collapsible-icon {
  transform: rotate(180deg);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  opacity: 0;
}

.collapsible-content.active {
  opacity: 1;
  max-height: 5000px;
}

.collapsible-content > div {
  background: linear-gradient(135deg, rgba(124, 166, 126, 0.05), rgba(124, 166, 126, 0.02));
  border-radius: 12px;
  border: 1px solid rgba(124, 166, 126, 0.1);
  margin-top: 0.5rem;
}

.project-year {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.project-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(124, 166, 126, 0.1);
  color: var(--accent);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-size: 1rem;
}

.project-details {
  display: none;
  padding: 0 2rem 2rem 2rem;
  border-top: 1px solid rgba(124, 166, 126, 0.1);
  animation: slideDown 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.project-details p {
  margin-bottom: 1.5rem;
  color: var(--text);
  line-height: 1.7;
}

/* Expanded state */
.project-card.expanded {
  border-color: rgba(124, 166, 126, 0.3);
  box-shadow: 0 10px 40px rgba(124, 166, 126, 0.15);
}

.project-card.expanded .project-header {
  background: rgba(124, 166, 126, 0.05);
}

.project-card.expanded .project-toggle {
  background: var(--accent);
  color: var(--bg);
  transform: rotate(180deg);
}

.project-card.expanded .project-details {
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================================================
   RESPONSIVE - EXPANDABLE CARDS
========================================================= */
@media (max-width: 768px) {
  .project-title {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .project-title h3 {
    font-size: 1.2rem;
  }

  .project-header {
    padding: 1.5rem;
  }

  .project-details {
    padding: 0 1.5rem 1.5rem 1.5rem;
  }
}

/* =========================================================
   RESPONSIVE - FEATURED CAROUSEL
========================================================= */
@media (max-width: 1200px) {
  .featured-carousel .carousel-item {
    flex: 0 0 420px;
  }

  .preview-follower {
    width: 200px;
    height: 200px;
  }
}

@media (max-width: 768px) {
  .featured-carousel .carousel-item {
    flex: 0 0 100%;
    max-width: 350px;
  }

  .featured-carousel .carousel-track {
    gap: 1.5rem;
  }

  .preview-follower {
    display: none !important;
  }
}