/* =============================================
   VARIABILI GRIGLIA — modifica qui
============================================= */
:root {
  --gap-foto:        2px;
  --padding-griglia: 0px;
}

/* ---- Layout fisso ---- */
html, body { height: 100vh; overflow: hidden; }
.site-header { flex-shrink: 0; background: var(--sfondo); z-index: 10; }
main         { flex: 1; overflow-y: auto; min-height: 0; padding-bottom: 52px; }

/* Footer fisso trasparente — 3 colonne: prev | logo | next */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 14px 12px;
  background: transparent;
  z-index: 9;
  pointer-events: none;
}
.footer img   { pointer-events: auto; justify-self: center; }
.footer-nav   {
  pointer-events: auto;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  color: var(--testo);
  opacity: 0.5;
  transition: opacity 0.2s;
}
.footer-nav:hover      { opacity: 1; }
.footer-nav--next      { text-align: right; }

/* ---- Loader di caricamento ---- */
#loader {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  transition: opacity 0.6s;
}
#loader.done { opacity: 0; pointer-events: none; }
#loader-bar-track {
  width: 200px;
  height: 1.7px;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 999px;
  overflow: hidden;
}
#loader-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--testo);
  border-radius: 999px;
}

/* ---- Event header ---- */
.event-header {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: var(--spessore-bordo) solid var(--bordo);
  border-bottom: var(--spessore-bordo) solid var(--bordo);
}
.event-header__num,
.event-header__title,
.event-header__date {
  padding: 6px 12px;
  white-space: nowrap;
  line-height: 1;
  display: flex;
  align-items: center;
}
.event-header__num   { grid-column: 1; }
.event-header__title { grid-column: 2 / 6; }
.event-header__date  { grid-column: 6; justify-content: flex-end; }

/* ---- Photo grid — masonry ---- */
/* Le foto mostrano la loro altezza naturale, senza ritaglio.
   Il JS in event.js calcola grid-row-end:span per ogni item. */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: var(--gap-foto);
  row-gap: 0;
  padding: var(--padding-griglia);
  grid-auto-rows: 1px;
  align-items: start;
}
.photo-grid__item {
  overflow: hidden;
  cursor: pointer;
  margin-bottom: 2px;
}
.photo-grid__item img {
  width: 100%;
  height: auto;
  display: block;
  transition: opacity 0.2s;
}
.photo-grid__item:hover img { opacity: 0.75; }

/* ---- Lightbox ---- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.80);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.lightbox.open { opacity: 1; pointer-events: all; }
.lightbox__img {
  max-width: calc(100vw - 160px);
  max-height: calc(100vh - 80px);
  object-fit: contain;
  display: block;
}
.lightbox__btn {
  position: absolute;
  background: none;
  border: var(--spessore-bordo) solid var(--bordo);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 13px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.lightbox__btn:hover { background: var(--bordo); color: var(--sfondo); }
.lightbox__prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 20px; top: 50%; transform: translateY(-50%); }
.lightbox__close { top: 20px; right: 20px; }
.lightbox__counter {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
}


/* Swipe hint — visibile solo su mobile */
.lightbox__swipe-hint {
  display: none;
  position: absolute;
  top: 16px;
  left: 20px;
  font-family: var(--font);
  font-size: 11px;
  font-weight: 500;
  color: rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
  /* Event header */
  .event-header { grid-template-columns: 1fr 1fr; }
  .event-header__num   { display: none; }
  .event-header__title { grid-column: 1; white-space: normal; height: auto; padding: 6px 12px; line-height: 1.3; }
  .event-header__date  { grid-column: 2; }

  /* Griglia foto: 2 colonne */
  .photo-grid { grid-template-columns: repeat(2, 1fr); }

  /* Lightbox: nascondi le frecce, mostra swipe hint */
  .lightbox__prev, .lightbox__next { display: none; }
  .lightbox__swipe-hint { display: block; }
  .lightbox__img { max-width: 95vw; max-height: 80vh; }

  /* Footer mobile: flex con Design stuff | logo | Contact me */
  .footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    grid-template-columns: none; /* annulla la griglia desktop */
  }
  .footer-nav { display: none; }       /* nasconde prev/next */
  .footer-mobile { display: block; }   /* mostra Design stuff e Contact me */
}