/* Portfolio page — extends style.css */
.pf-hero {
  padding: 50px 0 30px;
  text-align: center;
  background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
}
.pf-hero h1 {
  font-family: Poppins, sans-serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--primary-deep, #0c4a6e);
  margin-bottom: 12px;
}
.pf-hero p {
  max-width: 640px;
  margin: 0 auto 28px;
  color: var(--text-light, #64748b);
  font-size: 1.05rem;
}
.pf-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 18px;
}
.pf-filter {
  border: 1px solid var(--border, #e2e8f0);
  background: #fff;
  color: var(--secondary, #0f172a);
  padding: 10px 18px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.pf-filter:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.pf-filter.active {
  background: var(--primary, #0ea5e9);
  border-color: var(--primary, #0ea5e9);
  color: #fff;
  box-shadow: 0 4px 14px rgba(14,165,233,0.35);
}
.pf-subfilters {
  display: flex;
  justify-content: center;
  gap: 0;
  background: #fff;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 50px;
  padding: 4px;
  width: fit-content;
  margin: 0 auto 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.pf-sub {
  border: none;
  background: transparent;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-light, #64748b);
  cursor: pointer;
  transition: all 0.3s ease;
}
.pf-sub.active {
  background: #f1f5f9;
  color: var(--secondary, #0f172a);
}
.pf-grid-section {
  padding: 20px 0 70px;
  background: #f1f5f9;
}
.pf-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.pf-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  display: block;
  color: inherit;
}
.pf-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}
.pf-thumb {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #e2e8f0;
}
.pf-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.pf-card:hover .pf-thumb img {
  transform: scale(1.05);
}
.pf-card h3 {
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  padding: 14px 12px;
  color: var(--secondary, #0f172a);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.pf-card.is-hidden {
  display: none;
}
.pf-more-wrap {
  text-align: center;
  margin-top: 36px;
}
.pf-more-wrap .btn i {
  margin-left: 6px;
  font-size: 12px;
}

@media (max-width: 1100px) {
  .pf-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .pf-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .pf-subfilters { flex-wrap: wrap; border-radius: 16px; }
}
@media (max-width: 480px) {
  .pf-grid { grid-template-columns: 1fr; }
}