.envelope-opening {
  position: fixed;
  inset: 0;
  z-index: 100;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: #420910;
}

.envelope-opening__button {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  color: #fff7e9;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.envelope-opening__button:focus-visible {
  outline: 2px solid #d9b778;
  outline-offset: -6px;
}

.envelope-opening__button:disabled { cursor: default; opacity: 1; }

.envelope-opening__video {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 55%;
  pointer-events: none;
}

.envelope-opening__prompt {
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  bottom: max(12%, calc(env(safe-area-inset-bottom) + 32px));
  padding: 20px;
  text-align: center;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(24px, 6vw, 32px);
  line-height: 1.2;
  letter-spacing: .1em;
  text-shadow: 0 2px 6px #260309, 0 0 24px #260309;
  transition: opacity .2s ease;
  pointer-events: none;
}

.envelope-opening__button:disabled .envelope-opening__prompt { opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  .envelope-opening__prompt { transition: none; }
}