/* ============================================================================
   ArcheoMap — Landing Screen (v313.154.58)
   ----------------------------------------------------------------------------
   Stato iniziale dell'app: hero a tutta pagina con carosello di foto sfondo,
   brand top-left, nav minimale top-right, search centrale, link "esplora
   vicino a te", indicatore carosello bottom-right (pattern AllTrails).
   Una sola implementazione canonica. Si dismissa al primo gesto significativo
   (search submit, "esplora vicino a te", "Esplora", ESC) e marca la sessione
   come vista. Niente onboarding stratificato sopra: la landing è uno stato di
   #am-landing dentro index.html, dietro l'app si inizializza già normalmente.
   ============================================================================ */

/* Body lock quando landing attiva */
body.am-landing-active {
  overflow: hidden;
}

/* Container — di default flex (mostrato), JS lo rimuove se non deve mostrarsi */
.am-landing {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  flex-direction: column;
  color: #fff;
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0a0a18; /* fallback se nessuna foto carica */
  opacity: 1;
  transition: opacity .35s ease;
  -webkit-tap-highlight-color: transparent;
}
.am-landing.is-dismissing {
  opacity: 0;
  pointer-events: none;
}

/* Carosello foto */
.am-landing-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}
.am-landing-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.4s ease-in-out;
  will-change: opacity;
}
.am-landing-slide.is-active {
  opacity: 1;
}

/* Overlay scuro graduale per leggibilità testo */
.am-landing-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, .50) 0%,
    rgba(0, 0, 0, .22) 32%,
    rgba(0, 0, 0, .35) 60%,
    rgba(0, 0, 0, .65) 100%
  );
  pointer-events: none;
}

/* Top bar */
.am-landing-top {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  gap: 16px;
}
.am-landing-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.3px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .45);
  user-select: none;
}
.am-landing-logo {
  font-size: 28px;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, .4));
}
.am-landing-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.am-landing-nav button {
  background: transparent;
  border: 0;
  color: #fff;
  font-family: inherit;
  font-weight: 700;
  font-size: 15px;
  padding: 10px 16px;
  cursor: pointer;
  text-shadow: 0 2px 8px rgba(0, 0, 0, .45);
  transition: opacity .15s ease, background .2s ease;
  border-radius: 24px;
}
.am-landing-nav button:hover,
.am-landing-nav button:focus-visible {
  opacity: .92;
  outline: none;
}
.am-landing-nav .am-landing-cta {
  border: 1.5px solid rgba(255, 255, 255, .85);
  padding: 10px 22px;
  background: rgba(255, 255, 255, .08);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  text-shadow: none;
}
.am-landing-nav .am-landing-cta:hover,
.am-landing-nav .am-landing-cta:focus-visible {
  background: rgba(255, 255, 255, .18);
}

/* Centro: titolo + search + link */
.am-landing-center {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 32px 96px;
  gap: 32px;
  min-height: 0;
}
.am-landing-title {
  font-size: clamp(34px, 6vw, 64px);
  font-weight: 800;
  margin: 0;
  letter-spacing: -1.4px;
  line-height: 1.05;
  text-shadow: 0 4px 28px rgba(0, 0, 0, .50);
  max-width: 14em;
}

/* Search bar */
.am-landing-search {
  width: 100%;
  max-width: 720px;
  background: #fff;
  color: #2a2a36;
  border-radius: 60px;
  display: flex;
  align-items: center;
  padding: 6px 6px 6px 22px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, .38);
  margin: 0;
}
.am-landing-search-icon {
  font-size: 18px;
  color: #6a6a78;
  margin-right: 12px;
  line-height: 1;
}
.am-landing-search input {
  flex: 1;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 17px;
  color: inherit;
  padding: 14px 12px 14px 0;
  outline: none;
  min-width: 0;
  border-radius: inherit;
}
.am-landing-search input::placeholder {
  color: #8a8a96;
}

/* Link "esplora vicino a te" */
.am-landing-nearby {
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .4);
}
.am-landing-nearby:hover,
.am-landing-nearby:focus-visible {
  opacity: .85;
  outline: none;
}

/* Indicatore carosello bottom-right */
.am-landing-indicator {
  position: absolute;
  z-index: 2;
  right: 28px;
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.am-landing-dot {
  width: 26px;
  height: 4px;
  border: 0;
  border-radius: 2px;
  background: rgba(255, 255, 255, .4);
  cursor: pointer;
  padding: 0;
  transition: background .3s ease, width .3s ease;
}
.am-landing-dot.is-active {
  background: rgba(255, 255, 255, 1);
}
.am-landing-dot:hover {
  background: rgba(255, 255, 255, .75);
}
.am-landing-pause {
  margin-left: 8px;
  width: 32px;
  height: 32px;
  border: 1.5px solid rgba(255, 255, 255, .7);
  border-radius: 50%;
  background: rgba(0, 0, 0, .25);
  color: #fff;
  font-size: 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.am-landing-pause:hover {
  background: rgba(0, 0, 0, .45);
}

/* Mobile */
@media (max-width: 600px) {
  .am-landing-top {
    padding: 14px 16px;
  }
  .am-landing-brand {
    font-size: 18px;
  }
  .am-landing-logo {
    font-size: 22px;
  }
  .am-landing-nav button {
    padding: 8px 12px;
    font-size: 14px;
  }
  .am-landing-nav .am-landing-cta {
    padding: 8px 16px;
  }
  .am-landing-center {
    padding: 16px 20px 76px;
    gap: 24px;
  }
  .am-landing-title {
    letter-spacing: -1px;
    line-height: 1.1;
  }
  .am-landing-search {
    padding: 4px 4px 4px 18px;
  }
  .am-landing-search input {
    font-size: 16px;
    padding: 12px 8px 12px 0;
  }
  .am-landing-nearby {
    font-size: 14px;
  }
  .am-landing-indicator {
    right: 14px;
    bottom: 14px;
    gap: 6px;
  }
  .am-landing-dot {
    width: 20px;
  }
}

/* Reduced motion: niente fade del carosello, niente animazioni */
@media (prefers-reduced-motion: reduce) {
  .am-landing-slide {
    transition: none;
  }
  .am-landing {
    transition: none;
  }
}