/* ========================================
   Project Detail Page Styles
   ======================================== */

/* Hero */
.project-hero {
  position: relative;
  z-index: 1;
  padding: 8rem 2rem 4rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 2rem;
  transition: color 0.3s ease;
}

.back-link:hover {
  color: var(--accent);
}

/* Gradient title */
.project-detail-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-detail-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.project-detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-detail-tags span {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  background: var(--accent-bg);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
}

.project-detail-links {
  display: flex;
  gap: 1rem;
}

.detail-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  transition: all 0.3s ease;
}

.detail-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--accent-glow);
  opacity: 0.9;
}

/* ========================================
   Description
   ======================================== */
.project-detail-desc {
  max-width: 760px;
}

.project-detail-desc h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-detail-desc h3:first-child {
  margin-top: 0;
}

.project-detail-desc p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 1.25rem;
}

.project-detail-desc p:last-child {
  margin-bottom: 0;
}

/* ========================================
   Gallery (Photos with Captions)
   ======================================== */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.gallery-item {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.gallery-item:hover {
  border-color: var(--accent-glow);
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-3px);
}

.gallery-item-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.gallery-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.gallery-item:hover .gallery-item-img img {
  transform: scale(1.04);
}

.gallery-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  color: var(--text-muted);
}

.gallery-placeholder small {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

.gallery-item-img img.loaded + .gallery-placeholder {
  display: none;
}

/* ========================================
   Videos (with Captions)
   ======================================== */
.project-videos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.video-item {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.video-item:hover {
  border-color: var(--accent-glow);
  box-shadow: var(--card-hover-shadow);
}

.video-item-player {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-secondary);
}

.video-item-player video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--text-muted);
  pointer-events: none;
}

.video-placeholder svg {
  opacity: 0.4;
}

.video-placeholder small {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-align: center;
}

/* Shared caption */
.media-caption {
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  line-height: 1.4;
}

/* ========================================
   Awards
   ======================================== */
.awards-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 700px;
}

.award-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all 0.3s ease;
}

.award-item:hover {
  border-color: var(--accent-glow);
  box-shadow: var(--card-hover-shadow);
  transform: translateX(5px);
}

.award-icon {
  font-size: 2rem;
  flex-shrink: 0;
  line-height: 1;
}

.award-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.award-event {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
}

/* ========================================
   What I Learned
   ======================================== */
.learned-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.25rem;
}

.learned-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.learned-card:hover {
  border-color: var(--accent-glow);
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-3px);
}

.learned-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  line-height: 1;
}

.learned-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.learned-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========================================
   Kit of Parts
   ======================================== */
.kit-intro {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.kit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.25rem;
}

.kit-card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all 0.3s ease;
}

.kit-card:hover {
  border-color: var(--accent-glow);
  box-shadow: var(--card-hover-shadow);
}

.kit-category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.9rem;
  font-family: 'JetBrains Mono', monospace;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.kit-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.kit-item {
  padding: 0.35rem 0.85rem;
  background: var(--accent-bg);
  color: var(--text-primary);
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 500;
  border: 1px solid var(--border);
}

/* ========================================
   Engineering Portfolio PDF Card
   ======================================== */
.pdf-portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: all 0.3s ease;
}

.pdf-portfolio-card:hover {
  border-color: var(--accent-glow);
  box-shadow: var(--card-hover-shadow);
}

.pdf-preview {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.pdf-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.pdf-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
}

.pdf-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
}

.pdf-actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.detail-link-secondary {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.detail-link-secondary:hover {
  background: var(--accent-bg);
  box-shadow: 0 4px 16px var(--accent-glow);
}

/* ========================================
   Lightbox (kept for future use)
   ======================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  cursor: zoom-out;
  animation: lightbox-in 0.3s ease;
}

.lightbox.active {
  display: flex;
}

@keyframes lightbox-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: lightbox-zoom 0.3s ease;
}

@keyframes lightbox-zoom {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 900px) {
  .project-gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-videos {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .project-detail-title {
    font-size: 2rem;
  }

  .project-gallery {
    grid-template-columns: 1fr;
  }

  .project-videos {
    grid-template-columns: 1fr;
  }

  .pdf-portfolio-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .pdf-actions {
    width: 100%;
  }

  .pdf-actions .detail-link {
    flex: 1;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .project-hero {
    padding: 6rem 1rem 3rem;
  }

  .project-detail-title {
    font-size: 1.75rem;
  }

  .project-detail-subtitle {
    font-size: 1rem;
  }

  .award-item {
    padding: 1.25rem;
    gap: 1rem;
  }

  .learned-grid {
    grid-template-columns: 1fr;
  }

  .kit-grid {
    grid-template-columns: 1fr;
  }
}