/* Sticky Book Promo - Frontend */
#sbp-popup {
  position: fixed;
  right: max(12px, env(safe-area-inset-right));
  bottom: max(12px, env(safe-area-inset-bottom));
  z-index: 2147483646; /* quasi al massimo; evita overlay del footer anche con stacking contexts */
  background: var(--sbp-bg, #fff);
  color: var(--sbp-text, #111827);
  border: 1px solid var(--sbp-border, #e5e7eb);
  border-radius: var(--sbp-radius, 16px);
  box-shadow: 0 10px 25px rgba(0,0,0,.15);
  width: min(var(--sbp-max-width, 340px), 92vw);
  max-width: 92vw;
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  transform: translateZ(0); /* Fix per alcuni Safari iOS con stacking di elementi fixed */
  pointer-events: auto;
  -webkit-font-smoothing: antialiased;
  background-clip: padding-box;
}

#sbp-popup.sbp-hidden {
  display: none;
}

#sbp-popup .sbp-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 12px 12px 12px 12px;
  align-items: center;
}

#sbp-popup .sbp-close {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
  color: inherit;
  font-size: 20px;
  line-height: 1;
  position: absolute;
  top: 6px;
  right: 8px;
  cursor: pointer;
  padding: 4px;
  opacity: .6;
}
#sbp-popup .sbp-close:hover { opacity: 1; }

/* Contenitore immagine con rapporto 2:3 (6x9) */
#sbp-popup .sbp-cover {
  display: block;
  width: 96px;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--sbp-border, #e5e7eb);
  background: #fff;
  flex: 0 0 auto;
}
#sbp-popup .sbp-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: translateZ(0);
}

#sbp-popup .sbp-content {
  display: grid;
  gap: 8px;
  align-items: start;
}

#sbp-popup .sbp-text {
  margin: 0;
  font-size: 14px;
}

#sbp-popup .sbp-button {
  text-decoration: none;
  display: inline-block;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--sbp-btn-bg, #2563eb);
  color: var(--sbp-btn-text, #ffffff);
  font-weight: 600;
  text-align: center;
  border: 1px solid rgba(0,0,0,.05);
  transition: transform .06s ease;
}
#sbp-popup .sbp-button:active { transform: translateY(1px); }

/* Mobile stacking */
@media (max-width: 480px) {
  #sbp-popup .sbp-inner {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px 12px 14px 12px;
  }
  #sbp-popup .sbp-cover {
    width: 38vw; /* mantiene rapporto 2:3 */
    margin: 0 auto;
  }
  #sbp-popup .sbp-content {
    text-align: center;
  }
}

/* Riduce intrusività su schermi molto piccoli (es. iPhone SE landscape) */
@media (max-height: 420px) {
  #sbp-popup {
    transform: translateZ(0) scale(.95);
    transform-origin: bottom right;
  }
}
