/* =========================================
   PORTFOLIO PAGE STYLES
   ========================================= */

.portfolio-filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.1);
  background: transparent;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--gray-1);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover { border-color: rgba(255,255,255,0.25); color: var(--white); }
.filter-btn.active { background: var(--red); border-color: var(--red); color: var(--white); }

/* Portfolio masonry-style grid */
.portfolio-masonry {
  columns: 3;
  column-gap: 20px;
}

.portfolio-masonry-item {
  break-inside: avoid;
  margin-bottom: 20px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
  background: var(--dark-2);
}

.portfolio-masonry-item:nth-child(5n+1) .portfolio-img { aspect-ratio: 4/3; }
.portfolio-masonry-item:nth-child(5n+2) .portfolio-img { aspect-ratio: 3/4; }
.portfolio-masonry-item:nth-child(5n+3) .portfolio-img { aspect-ratio: 1/1; }
.portfolio-masonry-item:nth-child(5n+4) .portfolio-img { aspect-ratio: 4/5; }
.portfolio-masonry-item:nth-child(5n+5) .portfolio-img { aspect-ratio: 3/2; }

.portfolio-img {
  width: 100%;
  background: var(--dark-3);
  position: relative;
  overflow: hidden;
  transition: transform 0.6s ease;
}

.portfolio-masonry-item:hover .portfolio-img { transform: scale(1.03); }

.portfolio-img-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--dark-3) 0%, #2A0000 100%);
  font-family: var(--font-display);
  font-size: 80px;
  color: rgba(196,0,0,0.06);
}

.portfolio-hover {
  position: absolute;
  inset: 0;
  background: rgba(196,0,0,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.portfolio-masonry-item:hover .portfolio-hover { opacity: 1; }

.portfolio-hover-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 0 20px;
}

.portfolio-hover-cat {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-top: 8px;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.lightbox.open { opacity: 1; visibility: visible; }

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--white);
  font-size: 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.lightbox-close:hover { background: var(--red); }

/* --- Responsive Portfolio --- */
@media (max-width: 1024px) {
  .portfolio-masonry { columns: 2; }
}

@media (max-width: 600px) {
  .portfolio-masonry { columns: 1; }
}