/* ── PORTFOLIO ── */

.pf-filters-section {
  background: var(--bg-light);
  padding: 20px 0 16px;
  border-bottom: 1px solid var(--border);
}
.pf-search-wrap {
  position: relative;
  margin-bottom: 14px;
}
.pf-search-wrap i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}
.pf-search {
  width: 100%;
  padding: 11px 16px 11px 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.pf-search:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}
.pf-filter-group { margin-bottom: 12px; }
.pf-filter-group-trends { margin-bottom: 8px; }
.pf-filter-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.pf-filter-row,
.pf-trend-row {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 4px;
}
.pf-filter-row::-webkit-scrollbar,
.pf-trend-row::-webkit-scrollbar { display: none; }
.pf-filter-row > *,
.pf-trend-row > * { flex-shrink: 0; }
.pf-scroll-x {
  margin-left: -4px;
  margin-right: -4px;
  padding-left: 4px;
  padding-right: 4px;
}
.pf-filter-btn {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
.pf-filter-btn:hover {
  border-color: var(--purple);
  color: var(--purple);
}
.pf-filter-btn.active {
  background: var(--gradient);
  border-color: transparent;
  color: #fff;
}
.pf-trend-pill {
  background: rgba(99,102,241,.08);
  border: 1px solid rgba(99,102,241,.2);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--purple);
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
.pf-trend-pill:hover,
.pf-trend-pill.active {
  background: var(--purple);
  border-color: var(--purple);
  color: #fff;
}
.pf-results-count {
  font-size: 13px;
  color: var(--text-muted);
  margin: 4px 0 0;
}

.pf-grid-section { padding: 48px 0 64px; }
.pf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.pf-card {
  transition: transform .25s, opacity .25s;
}
.pf-card.hidden { display: none; }
.pf-card-link {
  display: block;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  height: 100%;
  transition: box-shadow .25s, transform .25s;
}
.pf-card-link:hover {
  box-shadow: 0 16px 48px rgba(99,102,241,.15);
  transform: translateY(-4px);
}
.pf-card-img {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}
.pf-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.pf-card-link:hover .pf-card-img img { transform: scale(1.05); }
.pf-badge {
  position: absolute;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 6px;
}
.pf-badge.featured {
  top: 12px;
  left: 12px;
  background: var(--gradient);
  color: #fff;
}
.pf-badge.category {
  bottom: 12px;
  left: 12px;
  background: rgba(11,13,23,.85);
  color: #fff;
  backdrop-filter: blur(8px);
}
.pf-badge.category i { margin-right: 4px; }
.pf-card-body { padding: 20px; }
.pf-trend-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--purple);
  background: rgba(99,102,241,.1);
  padding: 4px 10px;
  border-radius: 12px;
  margin-bottom: 8px;
}
.pf-card-body h2 {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.3;
}
.pf-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pf-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.pf-card-meta i { color: var(--purple); margin-right: 4px; }
.pf-card-cta {
  font-size: 13px;
  font-weight: 700;
  color: var(--purple);
}
.pf-card-cta i { transition: transform .2s; }
.pf-card-link:hover .pf-card-cta i { transform: translateX(4px); }

.pf-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.pf-empty i { font-size: 48px; color: var(--border); margin-bottom: 16px; display: block; }
.pf-empty h3 { color: var(--text-dark); margin-bottom: 8px; }

.pf-loading { padding: 8px 0 24px; }
.pf-skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.pf-skeleton-card {
  height: 320px;
  border-radius: 16px;
  background: linear-gradient(90deg, #f0f0f5 25%, #e8e8f0 50%, #f0f0f5 75%);
  background-size: 200% 100%;
  animation: pf-shimmer 1.2s infinite;
}
@keyframes pf-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.pf-grid.pf-loading { opacity: .5; pointer-events: none; }

/* ── PROJECT DETAIL ── */
.pf-detail { padding: 40px 0 80px; }
@media (min-width: 992px) {
  .pf-detail { padding-top: 56px; }
}
.pf-detail-title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.25;
}
.pf-detail-sub {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.pf-carousel {
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 36px;
  box-shadow: 0 12px 40px rgba(0,0,0,.12);
}
.pf-carousel .carousel-item img {
  aspect-ratio: 16/9;
  object-fit: cover;
  max-height: 480px;
}
.pf-carousel .carousel-caption {
  background: rgba(11,13,23,.75);
  backdrop-filter: blur(8px);
  border-radius: 8px;
  padding: 8px 16px;
  bottom: 16px;
  left: 16px;
  right: auto;
  max-width: 80%;
}
.pf-carousel .carousel-control-prev,
.pf-carousel .carousel-control-next {
  width: 48px;
  height: 48px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(11,13,23,.6);
  border-radius: 50%;
  opacity: .9;
  margin: 0 12px;
}
.pf-detail-desc h2 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}
.pf-detail-desc p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
}

.pf-sidebar {
  position: sticky;
  top: 90px;
}
.pf-sidebar-block {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}
.pf-sidebar-block h3 {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-dark);
}
.pf-sidebar-block h3 i {
  color: var(--purple);
  margin-right: 6px;
}
.pf-info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.pf-info-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.pf-info-list li:last-child { border-bottom: none; }
.pf-info-list strong { color: var(--text-muted); font-weight: 600; flex-shrink: 0; }
.pf-info-list span { text-align: right; color: var(--text-dark); font-weight: 500; }
.pf-info-list a { color: var(--purple); }

.pf-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.pf-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 8px;
}
.pf-tag.skill { background: rgba(99,102,241,.12); color: var(--purple); }
.pf-tag.tool { background: rgba(34,197,94,.12); color: #16a34a; }
.pf-tag.lang { background: rgba(59,130,246,.12); color: #2563eb; }

.pf-related { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.pf-related h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 20px; }
.pf-related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.pf-related-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: box-shadow .2s;
}
.pf-related-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.pf-related-card img { aspect-ratio: 16/10; object-fit: cover; }
.pf-related-card div { padding: 12px; }
.pf-related-card h4 { font-size: 14px; font-weight: 700; margin: 4px 0 0; color: var(--text-dark); }

@media (max-width: 991.98px) {
  .pf-sidebar { position: static; }
}

@media (max-width: 767.98px) {
  .pf-filters-section { padding: 14px 0 10px; }
  .pf-search-wrap { margin-bottom: 10px; }
  .pf-filter-group { margin-bottom: 10px; }
  .pf-filter-label { margin-bottom: 6px; }
  .pf-scroll-x {
    margin-left: -30px;
    margin-right: -30px;
    padding-left: 30px;
    padding-right: 30px;
  }
  .pf-grid { grid-template-columns: 1fr; }
  .pf-grid-section { padding-top: 24px; }
}