/* === PROJECTS PAGE SPECIFIC STYLES === */

/* Projects Hero Section */
.projects-hero {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.projects-title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  text-align: center;
}

.projects-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Projects Content */
.projects-content {
  padding: var(--space-xl) 0;
}

/* Project Filters */
.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.filter-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.filter-btn.active {
  background: var(--accent);
  color: var(--text-on-accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.filter-btn.loading {
  opacity: 0.8;
  cursor: wait;
}

.filter-btn.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 1.2s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Project card animations */
.project-card {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card.filtering {
  transform: scale(0.95);
  opacity: 0.6;
}

.project-card.hidden {
  opacity: 0;
  transform: scale(0.95) translateY(10px);
  pointer-events: none;
}

/* Projects Sections */
.projects-section {
  margin-bottom: var(--space-xxl);
}

.section-title {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--accent);
}

/* Project Cards */
.project-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  overflow: hidden;
  transition: all 0.3s ease;
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

/* Enhanced hover effect for clickable project cards */
.project-card.clickable {
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card.clickable:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 
    0 20px 60px rgba(0, 0, 0, 0.4),
    0 0 0 1px var(--accent);
  border-color: var(--accent);
}

/* Ensure clickable cards override default hover */
.project-card.clickable:hover .hero-placeholder,
.project-card.clickable:hover .hero-overlay {
  transform: none;
}

/* Project Card Link Wrapper */
.project-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.project-card-link:hover {
  text-decoration: none;
  color: inherit;
}

.project-card-link:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Ensure link doesn't interfere with card hover effects */
.project-card-link:hover .project-title,
.project-card-link:hover .project-tagline,
.project-card-link:hover .project-overview p,
.project-card-link:hover .tech-stack h4,
.project-card-link:hover .tech-detail,
.project-card-link:hover .research-hook h4,
.project-card-link:hover .research-hook p {
  color: inherit;
}

/* Hero Thumbnail */
.project-hero-link {
  text-decoration: none;
  color: inherit;
  display: block;
  cursor: pointer;
}

.project-hero {
  position: relative;
  height: 300px;
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-card:hover .hero-image {
  transform: scale(1.02);
}

.hero-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  color: var(--text-secondary);
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.4;
}

.hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  padding: var(--space-lg);
  color: white;
}

.project-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: white;
  margin: 0 0 var(--space-sm) 0;
}

.project-tagline {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  font-style: italic;
}

/* Project Overview */
.project-overview {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.project-overview p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}

/* Tech Stack */
.tech-stack {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.tech-stack h4 {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 var(--space-md) 0;
}

.tech-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.tech-item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.tech-category {
  font-weight: 600;
  color: var(--accent);
  min-width: 120px;
  font-size: 0.9rem;
}

.tech-detail {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Research Hook */
.research-hook {
  padding: var(--space-lg);
  background: var(--bg-tertiary);
}

.research-hook h4 {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 var(--space-md) 0;
}

.research-hook p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0;
  font-weight: 500;
  font-style: italic;
}

/* Archive Section */
.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.archive-item {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all 0.3s ease;
  overflow: hidden;
}

.archive-item.has-thumb {
  padding-top: 140px; /* create room for thumbnail */
}

.archive-thumb {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background-size: cover;
  background-position: center;
  filter: saturate(0.9);
  opacity: 0.9;
}

.archive-item.has-thumb::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.0), rgba(0,0,0,0.25));
  pointer-events: none;
}

.archive-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.archive-title {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.archive-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.archive-count {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
  .projects-title {
    font-size: 2.2rem;
  }
  
  .projects-subtitle {
    font-size: 1rem;
  }
  
  .project-hero {
    height: 250px;
  }
  
  .project-title {
    font-size: 1.5rem;
  }
  
  .project-tagline {
    font-size: 0.9rem;
  }
  
  .tech-item {
    flex-direction: column;
    gap: var(--space-xs);
  }
  
  .tech-category {
    min-width: auto;
  }
  
  .filter-btn {
    flex: 1;
    min-width: 120px;
  }
  
  .archive-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .projects-content {
    padding: var(--space-lg) 0;
  }
  
  .project-hero {
    height: 200px;
  }
  
  .hero-overlay {
    padding: var(--space-md);
  }
  
  .project-overview,
  .tech-stack,
  .research-hook {
    padding: var(--space-md);
  }
  
  .project-title {
    font-size: 1.3rem;
  }
  
  .project-tagline {
    font-size: 0.85rem;
  }
}

/* Filter Animation */
.project-card {
  opacity: 1;
  transform: scale(1);
  transition: all 0.3s ease;
}

/* Empty State Placeholder */
.projects-content-empty {
  min-height: 400px; /* Same as project hero height */
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin: var(--space-xl) 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.projects-content-empty.visible {
  opacity: 1;
}

.empty-state-content {
  text-align: center;
  color: var(--text-secondary);
}

.empty-state-title {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.empty-state-message {
  font-size: 1rem;
  color: var(--text-muted);
}

.project-card.hidden {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
}

/* Loading States */
.project-image {
  background: var(--bg-tertiary);
  transition: opacity 0.3s ease;
}

.project-image:not([src]) {
  opacity: 0.5;
}

/* Print Styles */
@media print {
  .project-filters,
  .project-actions,
  .nav-toggle {
    display: none;
}

/* Disabled project links (coming soon) */
.project-card-link.disabled {
  pointer-events: none;
  cursor: default;
  opacity: 0.9;
}

/* Coming soon badge for disabled cards */
.project-hero .coming-soon-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--warning);
  color: #000;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

  .project-card {
    break-inside: avoid;
    margin-bottom: var(--space-md);
  }
  
  .project-content {
    grid-template-columns: 1fr;
  }
}