/* 
   portfolio.css - Depth Zone -1 (Pyramid Grid & Chamber)
*/

.portfolio-section {
  padding: var(--space-xxl) var(--space-md);
  background-color: var(--color-obsidian);
  position: relative;
  background-image: 
    linear-gradient(rgba(26, 22, 18, 0.8) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 22, 18, 0.8) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  text-transform: uppercase;
}

.section-header p {
  margin: 0 auto;
  font-style: italic;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-sand);
  opacity: 0.8;
}

/* 
  Hierarchical Pyramid Grid 
  Total 8 Videos:
  Apex: 1
  Mid: 2
  Base-3: 3
  Base-2: 2
*/
.pyramid-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  max-width: 1400px;
  margin: 0 auto;
}

.grid-tier {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  width: 100%;
}

.apex-tier { max-width: 800px; }
.mid-tier { max-width: 1000px; }
.base-tier-3 { max-width: 1200px; }
.base-tier-2 { max-width: 800px; } /* Footer of pyramid */

/* Cards */
.portfolio-card {
  position: relative;
  background-color: var(--color-basalt);
  background-image: radial-gradient(circle at center, rgba(201, 168, 76, 0.12) 0%, rgba(5, 4, 3, 0.95) 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border: 1px solid rgba(201, 168, 76, 0.15);
  border-radius: 4px;
  overflow: hidden;
  flex: 1;
  aspect-ratio: 16/9;
  cursor: none; /* Uses custom hardware cursor */
  transition: transform var(--trans-medium), border-color var(--trans-fast);
}

.card-video-preview {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  pointer-events: none; /* Block right-click download on thumbnail previews */
  user-select: none;
  -webkit-user-select: none;
}

/* Different sizes based on tier */
.apex-card { aspect-ratio: 21/9; } /* Cinematic ultrawide for crown */

.portfolio-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-gold);
  box-shadow: 0 10px 30px rgba(10, 35, 58, 0.5);
}

.particle-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity var(--trans-fast);
}

.portfolio-card:hover .particle-canvas {
  opacity: 1;
}

.card-inner {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--space-md);
  z-index: 2;
  background: linear-gradient(to top, rgba(5,4,3,0.95) 0%, rgba(5,4,3,0) 100%);
  transform: translateY(20px);
  opacity: 0.9;
  transition: all var(--trans-medium);
}

.portfolio-card:hover .card-inner {
  transform: translateY(0);
  opacity: 1;
}

.card-tag {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  border: 1px solid var(--color-gold-dark);
  padding: 0.2em 0.6em;
  border-radius: 2px;
  margin-bottom: var(--space-xs);
  background: rgba(10, 35, 58, 0.5); /* Subtle lapis */
}

.portfolio-card h3 {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 0.2em;
}

.portfolio-card p {
  font-size: 0.9rem;
  color: var(--color-sand);
  margin-bottom: 0;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--trans-medium) 0.1s;
}

.portfolio-card:hover p {
  opacity: 0.8;
  transform: translateY(0);
}

.card-glow-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at center, rgba(201, 168, 76, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--trans-medium);
  z-index: 0;
}

.portfolio-card:hover .card-glow-bg {
  opacity: 1;
}

/* Responsive Grid */
@media (max-width: 900px) {
  .grid-tier {
    flex-direction: column;
  }
  .portfolio-card {
    aspect-ratio: 16/9; /* normalize on mobile */
  }
}

/* CTA Section */
.cta-section {
  padding: var(--space-xxl) var(--space-md);
  text-align: center;
  background-color: var(--color-basalt);
  position: relative;
}

.cta-container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.cta-container h2 {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.cta-container p {
  margin: 0 auto var(--space-md);
}

/* Show card metrics and narratives on touch or hover-less devices */
@media (hover: none), (pointer: coarse) {
  .card-inner {
    transform: translateY(0) !important;
    opacity: 1 !important;
  }
  .portfolio-card p {
    opacity: 0.95 !important;
    transform: translateY(0) !important;
  }
}