/* =============================================
   PORTAFOLIO PAGE CSS
   ============================================= */

/* --- Page header --- */
.pf-header {
  padding: 120px 0 48px;
  border-bottom: 1px solid var(--border);
}

.pf-header__back {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.pf-header__back a {
  color: var(--text-muted);
  transition: color var(--transition);
}
.pf-header__back a:hover { color: var(--orange); }

.pf-header__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--white);
  line-height: 1;
  margin-bottom: 12px;
}

.pf-header__sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* --- Filters --- */
.pf-filters {
  position: sticky;
  top: 60px;
  z-index: 50;
  background: rgba(13,13,13,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.pf-filters__inner {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.pf-filter {
  padding: 7px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.pf-filter:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.pf-filter.active {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

/* --- Gallery --- */
.pf-gallery {
  padding: 48px 0 80px;
  min-height: 60vh;
}

.pf-count {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 28px;
}

/* Masonry-style grid */
.pf-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* Make some items span 2 columns for visual variety */
.pf-item:nth-child(5n + 1) {
  grid-column: span 2;
}

/* --- Grid item --- */
.pf-item {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), opacity 0.3s ease;
  color: inherit;
}

.pf-item:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  color: inherit;
}

/* Hide animation */
.pf-item.hidden {
  display: none;
}

.pf-item.fade-out {
  opacity: 0;
  transform: scale(0.97);
}

.pf-item.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Image */
.pf-item__img {
  position: relative;
  aspect-ratio: 1/1.16;
  overflow: hidden;
  background: var(--bg-3);
}

/* Wider items get a different ratio */
.pf-item:nth-child(5n + 1) .pf-item__img {
  aspect-ratio: 16/9;
}

.pf-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.pf-item:hover .pf-item__img img {
  transform: scale(1.05);
}

/* No-image placeholder */
.pf-item__img.no-img {
  display: flex;
  align-items: center;
  justify-content: center;
}
.pf-item__img.no-img::after {
  content: 'IMAGEN';
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  font-family: var(--font);
}

/* Overlay on hover */
.pf-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(232,78,27,0.5) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.3s ease;
  gap: 4px;
}

.pf-item:hover .pf-item__overlay { opacity: 1; }

.pf-item__overlay-cat {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.pf-item__overlay-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
}

.pf-item__overlay-link {
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  margin-top: 6px;
}

/* Info below image */
.pf-item__info {
  padding: 16px 18px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.pf-item__cat {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}

.pf-item__title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.01em;
  text-align: right;
}

/* --- Empty state --- */
.pf-empty {
  text-align: center;
  padding: 80px 0;
  color: var(--text-dim);
  font-size: 0.9rem;
  grid-column: 1 / -1;
}

/* Active nav link */
.nav__active {
  color: var(--orange) !important;
}

/* --- Responsive --- */
@media (max-width: 960px) {
  .pf-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pf-item:nth-child(5n + 1) {
    grid-column: span 1;
  }

  .pf-item:nth-child(5n + 1) .pf-item__img {
    aspect-ratio: 4/3;
  }
}

@media (max-width: 600px) {
  .pf-grid {
    grid-template-columns: 1fr;
  }

  .pf-filters__inner {
    gap: 6px;
  }

  .pf-filter {
    font-size: 0.68rem;
    padding: 6px 12px;
  }

  .pf-header {
    padding: 100px 0 36px;
  }
}