/* ==========================================================================
   gallery.css — stili delle tre pagine "universo visivo"
   (crabby.html, atelier.html, linea50.html)

   Perche' un foglio separato e non brand.css: brand.css e' condiviso da tutte
   le pagine e viene toccato da piu' mani. Queste regole servono solo a tre
   pagine, quindi stanno qui e non rischiano di spostare nulla altrove.
   Il contenuto e' comune ai due siti.
   ========================================================================== */

/* Il pannello di vetro (.sheet) altrove e' largo 860 px, misura giusta per
   un testo legale. Una griglia di immagini ha bisogno di piu' respiro. */
.sheet.galleria { max-width: 1240px; }

.galleria h1 {
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  line-height: 1;
  margin: 0 0 16px;
}
.galleria h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  line-height: 1.1;
  margin: 52px 0 6px;
}
.galleria h3 {
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  line-height: 1.2;
  margin: 0 0 6px;
}
.galleria p { max-width: 72ch; }
.galleria .lead { max-width: 46ch; }

/* --- barra delle schede -------------------------------------------------- */

.gal-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 34px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.gal-tabs a {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
}
.gal-tabs a:hover { border-color: var(--gold); }
.gal-tabs a[aria-current="page"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
  font-weight: 600;
}

/* --- apertura ------------------------------------------------------------ */

.gal-hero { margin: 26px 0 30px; }
.gal-hero img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--line);
}
.gal-hero figcaption {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* --- filtri -------------------------------------------------------------- */

.gal-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 40px 0 10px;
}
.gal-filters button {
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 15px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.gal-filters button:hover { border-color: var(--gold); color: var(--paper); }
.gal-filters button[aria-pressed="true"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
  font-weight: 600;
}
.gal-count {
  margin: 0 0 22px;
  font-size: 0.85rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* --- griglia ------------------------------------------------------------- */

.gal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
}
.gal-item { margin: 0; }
.gal-item[hidden] { display: none !important; }

.gal-btn {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #0c1b2c;
  cursor: zoom-in;
}
.gal-btn img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.gal-item[data-forma="verticale"] .gal-btn img { aspect-ratio: 3 / 4; }
.gal-item[data-forma="quadrata"] .gal-btn img { aspect-ratio: 1 / 1; }
.gal-item[data-forma="larga"] .gal-btn img { aspect-ratio: 16 / 9; }

.gal-btn:hover img { transform: scale(1.03); }
.gal-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.gal-btn:focus-visible img { transform: scale(1.03); }

.gal-cap {
  display: block;
  padding: 10px 3px 0;
}
.gal-cap b {
  display: block;
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--paper);
  line-height: 1.2;
}
.gal-cap span {
  display: block;
  margin-top: 3px;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
}

/* --- chiusura ------------------------------------------------------------ */

.gal-chiusura { margin-top: 8px; }
.gal-chiusura .grid { margin-top: 18px; }
.gal-chiusura .card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.gal-chiusura .card a { text-decoration: none; }
.gal-chiusura .card h3 {
  font-size: 1.35rem;
  margin: 0 0 6px;
}
.gal-chiusura .card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--muted);
}

/* --- tavola singola (foglio d'insieme della linea 50) -------------------- */
/* Un'immagine molto alta, mostrata per intero e non ritagliata: il contrario
   della griglia, che per leggibilità uniforma le proporzioni. */

.gal-singola { margin: 46px 0 0; text-align: center; }
.gal-singola img {
  width: auto;
  max-width: min(100%, 460px);
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.gal-singola figcaption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

/* --- lightbox ------------------------------------------------------------ */

.gal-lb {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--paper);
  max-width: min(96vw, 1180px);
  max-height: 96vh;
}
.gal-lb::backdrop { background: rgba(3, 9, 16, 0.94); }
.gal-lb-inner {
  display: grid;
  gap: 12px;
  padding: 6px;
}
.gal-lb img {
  max-width: 100%;
  max-height: 76vh;
  width: auto;
  height: auto;
  margin: 0 auto;
  border-radius: 12px;
  background: #0c1b2c;
}
.gal-lb-cap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px 16px;
  font-size: 0.85rem;
  color: var(--muted);
}
.gal-lb-cap b {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--paper);
}
.gal-lb-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
}
.gal-lb-nav button {
  cursor: pointer;
  background: #0c1b2c;
  border: 1px solid var(--line);
  color: var(--paper);
  border-radius: 999px;
  padding: 9px 17px;
}
.gal-lb-nav button:hover { border-color: var(--gold); }
body.gal-bloccato { overflow: hidden; }

@media (prefers-reduced-motion: reduce) {
  .gal-btn img { transition: none; }
  .gal-btn:hover img,
  .gal-btn:focus-visible img { transform: none; }
}

@media (max-width: 560px) {
  .gal-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .gal-cap b { font-size: 1rem; }
}