/* ============================================================
   PROGETTI / GALLERY
   ============================================================ */
.projects{background:var(--anthracite)}
.projects .head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:28px}
.filters button{
  background:transparent;border:1px solid var(--line-strong);color:var(--fog);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  padding:11px 18px;border-radius:999px;transition:.25s var(--ease);display:inline-flex;gap:8px;align-items:center;
}
.filters button .c{color:var(--fog-dim);font-size:10px}
.filters button:hover{border-color:var(--orange);color:var(--white)}
.filters button.active{background:var(--orange);border-color:var(--orange);color:#fff}
.filters button.active .c{color:rgba(255,255,255,.7)}

/* clean architectural portfolio grid */
.port-grid{margin-top:38px;display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,28px)}
.card{
  position:relative;overflow:hidden;border-radius:14px;cursor:pointer;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:0 1px 0 rgba(255,255,255,.03),0 18px 36px -26px rgba(0,0,0,.8);
  transform-style:preserve-3d;will-change:transform;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .4s,opacity .45s var(--ease);
}
.card .ph{position:relative;overflow:hidden;aspect-ratio:4/3}
.card .ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 1s var(--ease);will-change:transform}
.card .ph::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 42%,rgba(14,15,17,.55) 78%,rgba(14,15,17,.9));
  opacity:.5;transition:opacity .45s var(--ease)}
/* orange cantiere wash on hover */
.card .ph::before{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(150deg,rgba(255,106,26,0) 28%,rgba(255,106,26,.32) 70%,rgba(226,84,11,.62));
  opacity:0;transition:opacity .5s var(--ease)}
.card:hover .ph::before{opacity:1}
.card .tagline{position:absolute;top:14px;left:14px;z-index:2;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);
  background:var(--yellow);padding:6px 10px;border-radius:999px;font-weight:700}
.card .plus{position:absolute;top:12px;right:12px;z-index:2;width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;background:rgba(14,15,17,.45);border:1px solid var(--line-strong);
  backdrop-filter:blur(4px);transform:scale(.7);opacity:0;transition:.45s var(--ease)}
.card .body{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:20px 20px 18px;transform:translateY(10px);transition:transform .5s var(--ease)}
.card .body .cat{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--yellow);display:block;margin-bottom:6px}
.card .body h4{margin:0;font-size:19px;font-weight:700;letter-spacing:.01em;line-height:1.15}
.card .body p{margin:8px 0 0;font-size:13.5px;color:var(--fog);line-height:1.5;max-height:0;opacity:0;overflow:hidden;transition:max-height .5s var(--ease),opacity .4s var(--ease),margin .4s}
.card:hover{transform:translateY(-6px);border-color:var(--line-strong);box-shadow:0 1px 0 rgba(255,255,255,.05),0 34px 56px -28px rgba(0,0,0,.9)}
.card:hover .ph img{transform:scale(1.06)}
.card:hover .ph::after{opacity:.95}
.card:hover .plus{transform:scale(1);opacity:1}
.card:hover .body{transform:translateY(0)}
.card:hover .body p{max-height:80px;opacity:1;margin-top:8px}
.card.hidden{display:none}
.card.span2{grid-column:span 2}
.card.span2 .ph{aspect-ratio:16/9}
@media(max-width:860px){
  .port-grid{grid-template-columns:repeat(2,1fr)}
  .card.span2{grid-column:span 2}
  .card .body p{max-height:80px;opacity:1;margin-top:8px}
  .card .body{transform:none}
}
@media(max-width:560px){
  .port-grid{grid-template-columns:1fr}
  .card.span2{grid-column:span 1}
  .card.span2 .ph{aspect-ratio:4/3}
}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:120;background:rgba(8,9,10,.94);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;padding:clamp(16px,4vw,60px)}
.lightbox.open{display:flex}
.lightbox figure{margin:0;max-width:1100px;width:100%;position:relative}
.lightbox img{width:100%;max-height:80vh;object-fit:contain;border-radius:3px}
.lightbox figcaption{display:flex;justify-content:space-between;gap:16px;margin-top:16px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--fog)}
.lightbox figcaption .cat{color:var(--yellow)}
.lb-close,.lb-nav{position:absolute;background:rgba(255,255,255,.06);border:1px solid var(--line-strong);color:#fff;width:50px;height:50px;border-radius:50%;display:grid;place-items:center;transition:.25s}
.lb-close:hover,.lb-nav:hover{background:var(--orange);border-color:var(--orange)}
.lb-close{top:-64px;right:0}
.lb-nav{top:50%;transform:translateY(-50%)}
.lb-nav.prev{left:-72px}
.lb-nav.next{right:-72px}
@media(max-width:900px){.lb-nav.prev{left:6px}.lb-nav.next{right:6px}.lb-close{top:-58px}}