/* ===== Portfolio Page ===== */
.page-hero-sub { color:rgba(255,255,255,.75); font-size:1.05rem; }

/* Filter buttons */
.pf-filters { display:flex; justify-content:center; flex-wrap:wrap; gap:.5rem; margin-bottom:2.5rem; }
.pf-btn {
  background:#fff;
  border:1.5px solid var(--c-border-2);
  color:var(--c-text);
  padding:.48rem 1.25rem;
  border-radius:50px;
  font-weight:600;
  font-size:.88rem;
  cursor:pointer;
  font-family:var(--font);
  transition:var(--t);
}
.pf-btn:hover { border-color:var(--c-primary); color:var(--c-primary); }
.pf-btn.active { background:var(--c-primary); border-color:var(--c-primary); color:#fff; }

/* Grid */
.pf-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));
  gap:1rem;
}

.pf-item {
  border-radius:var(--r-md);
  overflow:hidden;
  cursor:pointer;
  position:relative;
  aspect-ratio:4/3;
  transition:var(--t);
}
.pf-item img { width:100%; height:100%; object-fit:cover; transition:transform .55s ease; }
.pf-item:hover img { transform:scale(1.08); }

.pf-overlay {
  position:absolute; inset:0;
  background:linear-gradient(to top, rgba(0,55,100,.9) 0%, rgba(0,55,100,.3) 50%, transparent 100%);
  display:flex; flex-direction:column; justify-content:flex-end;
  padding:1rem 1.1rem;
  opacity:0; transition:var(--t);
}
.pf-item:hover .pf-overlay { opacity:1; }
.pf-overlay h4 { color:#fff; font-size:1rem; font-weight:700; margin:0 0 .15rem; }
.pf-overlay span { color:rgba(0,174,239,.9); font-size:.82rem; font-weight:600; }
.pf-zoom {
  position:absolute; top:.8rem; right:.8rem;
  width:36px; height:36px; border-radius:50%;
  background:rgba(255,255,255,.2);
  backdrop-filter:blur(4px);
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:.9rem;
  opacity:0; transform:translateY(-6px);
  transition:var(--t);
}
.pf-item:hover .pf-zoom { opacity:1; transform:translateY(0); }

/* Lightbox */
.pf-lightbox {
  position:fixed; inset:0;
  background:rgba(0,10,20,.95);
  z-index:9999;
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden;
  transition:opacity .35s ease, visibility .35s ease;
  backdrop-filter:blur(10px);
}
.pf-lightbox.open { opacity:1; visibility:visible; }

.lb-img-wrap {
  max-width:90vw; max-height:90vh;
  position:relative;
  display:flex; align-items:center; justify-content:center;
}
.lb-img-wrap img {
  max-width:90vw; max-height:80vh;
  border-radius:var(--r-md);
  object-fit:contain;
  box-shadow:0 30px 80px rgba(0,0,0,.7);
}
.lb-caption {
  position:absolute; bottom:-2.5rem; left:0; right:0;
  text-align:center; color:rgba(255,255,255,.8); font-size:.9rem; font-weight:600;
}

.lb-close {
  position:absolute; top:1.2rem; right:1.2rem;
  width:44px; height:44px; border-radius:50%;
  background:rgba(255,255,255,.12);
  border:none; color:#fff; font-size:1.2rem;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition:var(--t);
}
.lb-close:hover { background:var(--c-red); }

.lb-prev, .lb-next {
  position:absolute; top:50%; transform:translateY(-50%);
  width:48px; height:48px; border-radius:50%;
  background:rgba(255,255,255,.1);
  border:1.5px solid rgba(255,255,255,.2);
  color:#fff; font-size:1rem;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition:var(--t);
}
.lb-prev { right:1.2rem; }
.lb-next { left:1.2rem; }
.lb-prev:hover, .lb-next:hover { background:var(--c-primary); border-color:var(--c-primary); }

/* Animations */
.pf-item.hidden { display:none; }
.pf-item.show { animation:fadeInUp .4s ease forwards; }
@keyframes fadeInUp {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}

@media(max-width:575px){
  .pf-grid { grid-template-columns:repeat(2, 1fr); gap:.6rem; }
}