/* Zoom experiment: host, transparent zoom button, fullscreen overlay, toast. Behaviour in js/zoom.js. */

.zoom-host {
  --zoom-bi: .25;
  --zoom-bh: .9;
  touch-action: pan-y;               /* page still scrolls; js blocks it only while zoomed */
  -webkit-touch-callout: none;       /* iOS "Save image" sheet */
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  cursor: zoom-in;
}
.zoom-host img { -webkit-touch-callout: none; -webkit-user-drag: none; user-select: none; }

.zoom-btn {
  position: absolute;
  right: 4px;
  bottom: 4px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: var(--certo-navy);
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 2px 10px rgba(32, 52, 56, .28);
  opacity: var(--zoom-bi);
  transition: opacity .45s ease;
}
.zoom-btn svg { width: 24px; height: 24px; }
.zoom-host.is-hinted .zoom-btn { opacity: var(--zoom-bh); transition-duration: .15s; }
.zoom-btn:focus-visible { outline: 3px solid var(--certo-orange); outline-offset: 2px; opacity: 1; }

.zoom-overlay {
  position: absolute;                /* never fixed: .phone is transformed on desktop */
  inset: 0;
  z-index: 40;
  overflow: hidden;
  pointer-events: none;
  background: rgb(255 255 255 / var(--zoom-bg, 1));
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--zoom-close, 80ms) linear, visibility 0s linear var(--zoom-close, 80ms);
}
.zoom-overlay.is-open { opacity: 1; visibility: visible; transition: none; }
.zoom-overlay img {
  position: absolute;
  top: 0;
  left: 0;
  max-width: none;
  transform-origin: 0 0;
  -webkit-user-drag: none;
  user-select: none;
}
.zoom-overlay.is-open img { will-change: transform; }

.zoom-tip {
  position: absolute;
  left: 50%;
  bottom: calc(34px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  padding: 8px 14px;
  border-radius: 999px;
  color: #fff;
  background: rgba(32, 52, 56, .84);
  font: 600 13px/1 var(--certo-font);
  white-space: nowrap;
  opacity: 0;
}
.zoom-overlay.is-open .zoom-tip { animation: zoom-tip 1.8s ease forwards; }
@keyframes zoom-tip {
  0%, 12% { opacity: 0; }
  25%, 70% { opacity: 1; }
  100% { opacity: 0; }
}

.zoom-toast {
  position: absolute;
  left: 50%;
  bottom: 110px;
  z-index: 46;
  padding: 11px 18px;
  border-radius: 999px;
  color: #fff;
  background: rgba(32, 52, 56, .94);
  font: 600 14px/1 var(--certo-font);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity .2s ease, transform .2s ease;
}
.zoom-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  .zoom-btn, .zoom-toast { transition: none; }
  .zoom-overlay.is-open .zoom-tip { animation: none; opacity: .9; }
}