/* =========================================================
   layout.css — contenitori, testata, griglie, allestimento
   ========================================================= */

.contenitore {
  width: 100%;
  max-width: var(--larghezza-max);
  margin-inline: auto;
  padding-inline: var(--s-5);
}

.colonna-testo { max-width: var(--larghezza-testo); }

/* --- Testata ------------------------------------------- */
.testata {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--c-fondo) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-linea);
}

.testata__interno {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-5);
  padding-block: var(--s-4);
}

.testata__firma {
  font-family: var(--f-display);
  font-size: 1.375rem;
  letter-spacing: -0.01em;
}

.testata__firma:hover { text-decoration: none; color: var(--c-accento); }

.menu {
  display: flex;
  gap: var(--s-5);
  list-style: none;
  padding: 0;
  font-size: var(--t-sm);
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

.menu a { position: relative; padding-block: 2px; }
.menu a:hover { text-decoration: none; }

.menu a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--c-accento);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transizione);
}

.menu a:hover::after,
.menu a[aria-current="page"]::after { transform: scaleX(1); }

/* --- Sezioni ------------------------------------------- */
.sezione { padding-block: var(--s-8); }
.sezione--stretta { padding-block: var(--s-7); }

/* --- Allestimento: la linea di sala ---------------------
   Le opere si allineano al centro su un'unica linea
   orizzontale, come in un vero allestimento.             */
.allestimento {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(var(--s-6), 6vw, var(--s-9));
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-block: var(--s-8);
  padding-inline: var(--s-5);
  scrollbar-width: thin;
}

.allestimento::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 1px;
  background: var(--c-linea);
  pointer-events: none;
}

.allestimento > * { scroll-snap-align: center; flex: 0 0 auto; }

/* --- Griglia opere -------------------------------------- */
.griglia-opere {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
  gap: var(--s-6) var(--s-5);
}

/* --- Piè di pagina -------------------------------------- */
.pdp {
  border-top: 1px solid var(--c-linea);
  margin-top: var(--s-8);
  padding-block: var(--s-6) var(--s-7);
  font-size: var(--t-sm);
  color: var(--c-grafite);
}

.pdp__interno {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4) var(--s-6);
  justify-content: space-between;
  align-items: baseline;
}

@media (max-width: 40rem) {
  .testata__interno { flex-direction: column; align-items: flex-start; gap: var(--s-3); }
  .menu { gap: var(--s-4); flex-wrap: wrap; }
  .sezione { padding-block: var(--s-7); }
  .allestimento { flex-direction: column; align-items: stretch; padding-inline: 0; }
  .allestimento::before { display: none; }
}