/* La galleria in diagonale */
:root {
  --carta: #F6F2EA;
  --inchiostro: #1F2440;
  --tenue: #6A6E83;
  --inclinazione: -8deg;      /* quanto sale la fila; i quadri girano al contrario */
  --largo: 52vw;              /* un quadro */
  --alto: 33.7vw;
  --spazio: 2.6vw;
  --margine: clamp(18px, 4.5vw, 64px);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Mona Sans Variable', system-ui, sans-serif;
  color: var(--inchiostro);
  background: var(--carta);
}
.disegni {
  position: absolute;
  width: 0;
  height: 0;
}
button {
  font: inherit;
}

.apertura {
  display: grid;
  align-content: end;
  gap: 18px;
  min-height: 70vh;
  padding: var(--margine);
}
.apertura__sopra {
  margin: 0;
  color: var(--tenue);
  font-size: 0.95rem;
  font-weight: 600;
}
.apertura__titolo {
  margin: 0;
  font-size: clamp(3rem, 1rem + 8vw, 10rem);
  font-weight: 700;
  font-stretch: 112%;
  line-height: 0.88;
  letter-spacing: -0.045em;
}
.apertura__testo {
  max-width: 34ch;
  margin: 0;
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.35rem);
  line-height: 1.4;
}

/* ------------------------------------------------------------------ la fila inclinata */
.galleria {
  position: relative;
  height: calc(var(--alto) + 30vw);
  min-height: 420px;
  overflow: hidden;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}
.galleria.presa {
  cursor: grabbing;
}
.galleria__inclinato {
  position: absolute;
  left: 50%;
  top: 46%;
  transform: translate(-50%, -50%) rotate(var(--inclinazione));
}
.galleria__binario {
  display: flex;
  gap: var(--spazio);
  width: max-content;
  will-change: transform;
}
.vagone {
  flex: none;
  width: var(--largo);
  margin: 0;
  transform: rotate(calc(var(--inclinazione) * -1));
}
.vagone__quadro {
  height: var(--alto);
  overflow: hidden;
  background: #ddd;
}
.vagone__quadro svg {
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.vagone figcaption {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  font-size: clamp(0.9rem, 0.8rem + 0.35vw, 1.1rem);
}
.vagone__nome {
  font-weight: 650;
}
.vagone__nota {
  color: var(--tenue);
  text-align: right;
}
.galleria__frecce {
  position: absolute;
  right: var(--margine);
  bottom: var(--margine);
  display: flex;
  gap: 10px;
}
.freccia {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border: 0;
  border-radius: 50%;
  background: var(--inchiostro);
  color: var(--carta);
  cursor: pointer;
  transition: transform 0.16s cubic-bezier(0.23, 1, 0.32, 1);
}
.freccia:active {
  transform: scale(0.94);
}
.freccia:focus-visible {
  outline: 2px solid var(--inchiostro);
  outline-offset: 3px;
}
.freccia svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.freccia--indietro svg {
  transform: rotate(180deg);
}

.chiusura {
  min-height: 70vh;
  padding: var(--margine);
  display: grid;
  align-content: center;
}
.chiusura p {
  max-width: 30ch;
  margin: 0;
  font-size: clamp(1.4rem, 1rem + 1.6vw, 2.6rem);
  font-weight: 560;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

@media (max-width: 700px) {
  :root {
    --inclinazione: -4deg;
    --largo: 82vw;
    --alto: 85vw;
    --spazio: 16px;
  }
  .galleria {
    height: calc(var(--alto) + 60vw);
  }
  .galleria__frecce {
    left: 0;
    right: 0;
    justify-content: center;
  }
  .vagone figcaption {
    flex-direction: column;
    gap: 2px;
  }
  .vagone__nota {
    text-align: left;
  }
}