/* ==========================================================================
   Cena 2 — Envelope mágico
   ========================================================================== */
#scene-envelope {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  background:
    radial-gradient(80% 60% at 50% 20%, rgba(48, 173, 121, 0.18), transparent 60%),
    radial-gradient(100% 80% at 50% 100%, rgba(217, 184, 63, 0.10), transparent 55%);
}

#scene-envelope.scene-active {
  opacity: 1;
  pointer-events: auto;
}

#scene-envelope.scene-exit {
  transition: opacity 0.5s var(--ease-soft);
  opacity: 0;
  pointer-events: none;
}

.envelope-intro-text {
  text-align: center;
  min-height: 54px;
}

.envelope-intro-text p {
  font-family: var(--font-display);
  font-size: clamp(19px, 5.4vw, 24px);
  color: var(--gold-light);
  letter-spacing: 0.02em;
  opacity: 0;
  font-style: italic;
}

#scene-envelope.scene-active .envelope-intro-text p {
  animation: fade-in-up 1s var(--ease-magic) 0.4s forwards;
}

.envelope-intro-text p.envelope-hint {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--cream);
  font-style: normal;
  opacity: 0;
  margin-top: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#scene-envelope.scene-active .envelope-intro-text p.envelope-hint {
  animation:
    fade-in-up 0.9s var(--ease-magic) 1.3s forwards,
    gentle-pulse 2.2s ease-in-out 2.4s infinite;
}

/* --- Envelope --- */
.envelope-wrap {
  position: relative;
  width: min(78vw, 300px);
  aspect-ratio: 3 / 2;
  transform: scale(0.8) translateY(10px);
  opacity: 0;
  filter: drop-shadow(0 22px 34px var(--shadow-deep));
  perspective: 900px;
}

#scene-envelope.scene-active .envelope-wrap {
  animation:
    envelope-enter 1s var(--ease-magic) 0.15s forwards,
    float-y 3.6s ease-in-out 1.2s infinite;
}

@keyframes envelope-enter {
  0% { transform: scale(0.8) translateY(10px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

.envelope-btn {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  -webkit-appearance: none;
}

.envelope-body {
  position: absolute;
  inset: 0;
  border-radius: 10px;
  background: linear-gradient(155deg, var(--cream) 0%, #ece4c8 60%, #e2d7ae 100%);
  border: 1px solid rgba(217, 184, 63, 0.6);
  overflow: hidden;
}

.envelope-body::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 30%, rgba(255,255,255,0.55) 48%, transparent 66%);
  transform: translateX(-120%);
  animation: envelope-shine 3.4s ease-in-out 1.6s infinite;
}

@keyframes envelope-shine {
  0%, 60%, 100% { transform: translateX(-120%); }
  30% { transform: translateX(120%); }
}

/* pombas de linhas douradas decorativas */
.envelope-body::after {
  content: '';
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(217,184,63,0.5), transparent);
}

.envelope-leaf {
  position: absolute;
  width: 26px;
  height: 26px;
  opacity: 0.65;
}
.envelope-leaf.leaf-1 { top: 8%; left: 6%; transform: rotate(-15deg); }
.envelope-leaf.leaf-2 { bottom: 9%; right: 7%; transform: rotate(160deg) scale(0.85); }

.envelope-flap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 58%;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  background: linear-gradient(160deg, #f1e9cd 0%, var(--cream) 55%, #e6dcb8 100%);
  border-bottom: 1px solid rgba(217, 184, 63, 0.5);
  transform-origin: top center;
  transform: rotateX(0deg);
  transition: transform 0.75s var(--ease-magic);
  transform-style: preserve-3d;
  z-index: 3;
}

.envelope-wrap.opening .envelope-flap {
  transform: rotateX(180deg);
}

.envelope-pocket-shadow {
  position: absolute;
  inset: 0;
  clip-path: polygon(0 100%, 50% 40%, 100% 100%);
  background: linear-gradient(0deg, rgba(30,90,36,0.18), transparent 60%);
  z-index: 1;
}

.wax-seal {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 35% 30%, var(--gold-light), var(--gold) 55%, #a9832a 100%);
  box-shadow: 0 3px 8px rgba(0,0,0,0.35), inset 0 0 0 2px rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
  transition: transform 0.3s var(--ease-soft), opacity 0.35s ease-out;
}

.wax-seal svg {
  width: 22px;
  height: 22px;
  fill: rgba(13, 48, 26, 0.75);
}

.wax-seal.seal-glow {
  animation: glow-pulse 0.6s ease-in-out;
}

.wax-seal.seal-burst {
  transform: translate(-50%, -50%) scale(1.6);
  opacity: 0;
}

/* prévia da carta que desliza para fora do envelope na abertura */
.letter-peek {
  position: absolute;
  left: 50%;
  bottom: 6%;
  width: 84%;
  height: 60%;
  transform: translate(-50%, 12%) scale(0.82);
  background: linear-gradient(180deg, var(--cream), #f7f4e8);
  border-radius: 6px;
  box-shadow: 0 -6px 18px rgba(0,0,0,0.15);
  opacity: 0;
  z-index: 2;
  transition: transform 0.85s var(--ease-magic) 0.25s, opacity 0.5s ease-out 0.25s;
  border: 1px solid rgba(217, 184, 63, 0.4);
}

.envelope-wrap.opening .letter-peek {
  opacity: 1;
  transform: translate(-50%, -18%) scale(0.94);
}

.envelope-wrap.letter-rising .letter-peek {
  transition: transform 0.9s var(--ease-magic), opacity 0.6s ease-in 0.3s;
  transform: translate(-50%, -420%) scale(2.6);
  opacity: 0;
}