/* ============================================================
   envelope.css — Welcome page
   GIF-based envelope: Envelope-Closed.gif → Envelope-Open.gif on click
   ============================================================ */

.page--welcome {
  background-color: var(--color-page-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.envelope-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: -24px;
}

/* GIF envelope image */
.envelope-gif {
  display: block;
  width: 220px;
  height: auto;
  cursor: pointer;
  mix-blend-mode: multiply;
}

/* "click to open" label */
.envelope-hint {
  font-family: 'Special Elite', 'Courier New', monospace;
  font-size: 15px;
  color: var(--color-blue);
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 200ms ease, transform 200ms ease;
  user-select: none;
  order: -1; /* above the envelope */
}

.envelope-wrapper:hover .envelope-hint {
  opacity: 1;
  transform: translateY(0);
}

/* Fade-out animation when envelope is clicked */
@keyframes envelopeFadeOut {
  to { opacity: 0; transform: scale(1.03) translateY(-8px); }
}

.envelope-wrapper.is-opening {
  animation: envelopeFadeOut 0.3s ease-in 0.75s forwards;
}

@media (max-width: 600px) {
  .envelope-gif { width: 180px; }
}