/* ============================================================
   PORTFOLIO PAGE STYLES
   ============================================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.portfolio-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  cursor: pointer;
}

.portfolio-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.6s ease;
}

.portfolio-card:hover .portfolio-card-image {
  transform: scale(1.08);
  filter: brightness(0.5);
}

/* Glassmorphism overlay */
.portfolio-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 28px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--glass-border);
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-card:hover .portfolio-overlay {
  transform: translateY(0);
}

.portfolio-overlay .portfolio-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.portfolio-overlay h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--text-heading);
}

.portfolio-overlay p {
  font-size: 0.875rem;
  color: var(--text-body);
  margin-bottom: 16px;
  line-height: 1.6;
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.portfolio-tag {
  padding: 4px 12px;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-full);
}

/* Top-right icon indicator */
.portfolio-card-icon {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  color: var(--text-heading);
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.portfolio-card:hover .portfolio-card-icon {
  opacity: 1;
  transform: scale(1);
}

/* Filter buttons (optional) */
.portfolio-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.portfolio-filter-btn {
  padding: 8px 20px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), border-color var(--transition-fast),
    background var(--transition-fast);
}

.portfolio-filter-btn:hover,
.portfolio-filter-btn.active {
  color: var(--accent-cyan);
  border-color: rgba(6, 182, 212, 0.3);
  background: rgba(6, 182, 212, 0.08);
}

@media (min-width: 640px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}