.gift-stage {
  --night: #14081f;
  --velvet: #5c1638;
  --ribbon: #f4c56a;
  --glass: rgba(210, 236, 255, 0.28);
  --moss: #3a5a32;
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  align-content: center;
  overflow: hidden;
  padding: max(0.6rem, env(safe-area-inset-top)) 0.85rem max(0.6rem, env(safe-area-inset-bottom));
  background: radial-gradient(ellipse at 50% 28%, #3a1848 0%, var(--night) 72%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.gift-stage[hidden] { display: none; }
.gift-stage.is-on { opacity: 1; pointer-events: auto; }

.gift-offer {
  display: grid;
  justify-items: center;
  gap: 1.1rem;
  text-align: center;
}
.gift-offer[hidden] { display: none; }
.gift-kicker {
  margin: 0;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.35rem;
  color: #ffd76a;
}
.gift-open {
  font: 600 0.95rem Figtree, sans-serif;
  background: #c41e3a;
  color: #fff5e6;
  border: 0;
  border-radius: 999px;
  padding: 0.8rem 1.4rem;
  min-height: 48px;
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(196, 30, 58, 0.45);
}
.gift-open:active { transform: scale(0.97); }
.gift-open:focus-visible { outline: 2px solid #ffd76a; outline-offset: 3px; }

.gift-box {
  position: relative;
  width: min(58vw, 11.5rem);
  height: 8.6rem;
  perspective: 640px;
  filter: drop-shadow(0 22px 28px rgba(8, 2, 16, 0.55));
}
.gift-box__body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 5.4rem;
  background:
    linear-gradient(90deg, transparent 46%, var(--ribbon) 46%, var(--ribbon) 54%, transparent 54%),
    linear-gradient(180deg, #8a2248, var(--velvet));
  border-radius: 4px 4px 10px 10px;
  box-shadow: inset 0 8px 16px rgba(255, 200, 160, 0.12);
}
.gift-box__lid {
  position: absolute;
  left: -6%; right: -6%; top: 0.35rem;
  height: 3.1rem;
  transform-origin: 12% 100%;
  transition: transform 1.1s cubic-bezier(0.05, 0.7, 0.1, 1);
  z-index: 2;
}
.gift-stage.is-opening .gift-box__lid {
  transform: translateY(-2.4rem) rotateZ(-28deg) rotateX(-18deg);
}
.gift-box__lid-face {
  display: block;
  height: 100%;
  background:
    linear-gradient(90deg, transparent 46%, var(--ribbon) 46%, var(--ribbon) 54%, transparent 54%),
    linear-gradient(180deg, #c43a68, #7a1c40);
  border-radius: 8px 8px 3px 3px;
  box-shadow: 0 6px 0 #3a0c20;
}
.gift-box__bow {
  position: absolute;
  left: 50%;
  top: -0.55rem;
  width: 2.6rem;
  height: 1.6rem;
  margin-left: -1.3rem;
  background: radial-gradient(circle at 30% 50%, #ffe9a8 0 28%, transparent 30%),
              radial-gradient(circle at 70% 50%, #ffe9a8 0 28%, transparent 30%);
  z-index: 3;
}

.gift-spark {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.gift-spark i {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #ffe7a0;
  box-shadow: 0 0 10px 3px rgba(255, 215, 106, 0.85);
  opacity: 0;
}
.gift-stage.is-opening .gift-spark i {
  animation: gift-sparkle 1.4s ease-out forwards;
  animation-delay: var(--d, 0s);
}
@keyframes gift-sparkle {
  0% { opacity: 0; transform: translate(0, 0) scale(0.3); }
  18% { opacity: 1; }
  100% { opacity: 0; transform: translate(var(--x), var(--y)) scale(0.1); }
}

.gift-garden {
  position: relative;
  width: min(94vw, 34rem);
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  opacity: 0;
  transform: translateY(18px) scale(0.94);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.9s cubic-bezier(0.05, 0.7, 0.1, 1);
}
.gift-garden[hidden] { display: none; }
.gift-stage.is-garden .gift-garden {
  opacity: 1;
  transform: none;
}

.gift-dome {
  position: relative;
  width: min(72vw, 16.5rem);
  height: min(52vw, 13.2rem);
  flex-shrink: 0;
}
.gift-stage.is-note .gift-dome {
  width: min(58vw, 13.5rem);
  height: min(42vw, 10.6rem);
}
.gift-dome__glass {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 0;
  height: 80%;
  overflow: hidden;
  border-radius: 50%;
  background:
    linear-gradient(118deg, rgba(255, 255, 255, 0.55) 0 8%, transparent 22%),
    linear-gradient(180deg, rgba(186, 230, 255, 0.18), rgba(40, 80, 90, 0.08));
  border: 1.5px solid rgba(230, 248, 255, 0.55);
  box-shadow:
    inset -12px -8px 20px rgba(255, 255, 255, 0.18),
    0 18px 24px rgba(6, 2, 14, 0.45);
  z-index: 3;
}
.gift-dome__bed {
  position: absolute;
  inset: 10% 14% 6%;
  overflow: hidden;
}
.gift-dome__moss {
  position: absolute;
  left: 6%;
  right: 6%;
  bottom: 0;
  height: 38%;
  background:
    radial-gradient(ellipse at 50% 0%, #6b8f4a 0 40%, transparent 70%),
    linear-gradient(180deg, #4e7538, #2c4a28);
  border-radius: 50% 50% 40% 40%;
}
.gift-dome__base {
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: 0;
  height: 22%;
  background: linear-gradient(180deg, #c9a24a, #7a5a22 55%, #5a4018);
  border-radius: 8px 8px 14px 14px;
  box-shadow: inset 0 4px 0 rgba(255, 236, 180, 0.45);
}

.gift-plaque {
  position: absolute;
  left: 50%;
  bottom: 8%;
  z-index: 4;
  width: 5.4rem;
  margin-left: -2.7rem;
  padding: 0.18rem 0.2rem 0.28rem;
  text-align: center;
  background: linear-gradient(180deg, #ffe7a8, #c9963a 55%, #8a6418);
  border-radius: 3px;
  box-shadow: 0 2px 0 #5a3c10, 0 4px 8px rgba(0, 0, 0, 0.35);
  font-family: "Great Vibes", cursive;
  font-size: 1.15rem;
  line-height: 1;
  color: #4a2e08;
}

.gift-bloom {
  position: absolute;
  width: 2.1rem;
  margin-left: -1.05rem;
  z-index: 2;
  bottom: var(--b, 28%);
  left: var(--l, 50%);
}
.gift-bloom__stem {
  display: block;
  width: 2px;
  height: 1.05rem;
  margin: 0 auto;
  background: linear-gradient(#6db35a, #2f5a28);
  border-radius: 2px;
  transform-origin: 50% 100%;
  transform: scaleY(0);
}
.gift-bloom.is-up .gift-bloom__stem {
  transition: transform 0.55s cubic-bezier(0.05, 0.7, 0.1, 1);
  transform: scaleY(1);
}
.gift-bloom__head {
  display: block;
  width: 2rem;
  height: 2rem;
  margin: 0 auto -0.15rem;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 245, 230, 0.85);
  box-shadow: 0 4px 10px rgba(20, 8, 30, 0.4);
  transform: scale(0);
  transform-origin: 50% 90%;
}
.gift-bloom.is-open .gift-bloom__head {
  transition: transform 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform: scale(1);
}
.gift-bloom__head img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.gift-line {
  margin: 0;
  font-family: "Great Vibes", cursive;
  font-size: clamp(1.7rem, 6vw, 2.4rem);
  color: #ffd76a;
  text-align: center;
  min-height: 2.6rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.6s, transform 0.6s cubic-bezier(0.05, 0.7, 0.1, 1);
}
.gift-line.is-on { opacity: 1; transform: none; }
.gift-line[hidden] { display: none; }

.gift-note {
  width: 100%;
  overflow: visible;
  padding: 0.75rem 1rem 0.9rem;
  border-radius: 10px;
  background: #fff6e8;
  color: #3a2448;
  font: 400 clamp(0.86rem, 2.6vw, 1.02rem)/1.42 "Cormorant Garamond", Georgia, serif;
  box-shadow: 0 16px 36px rgba(8, 2, 16, 0.4);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s, transform 0.7s cubic-bezier(0.05, 0.7, 0.1, 1);
}
.gift-note[hidden] { display: none; }
.gift-note.is-on { opacity: 1; transform: none; }
.gift-note p { margin: 0 0 0.48rem; }
.gift-note p:last-child { margin: 0; }
.gift-note .gift-dear {
  font-family: "Great Vibes", cursive;
  font-size: clamp(1.25rem, 4.2vw, 1.5rem);
  color: #c41e3a;
}
.gift-note .gift-sign { font-style: italic; }

.letter-done {
  display: block;
  width: 100%;
  margin-top: 0.4rem;
  font: 600 0.92rem Figtree, sans-serif;
  background: #c41e3a;
  color: #fff5e6;
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1.2rem;
  min-height: 48px;
  cursor: pointer;
}
.letter-done:focus-visible { outline: 2px solid #c41e3a; outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  .gift-stage, .gift-garden, .gift-line, .gift-note, .gift-bloom__head, .gift-bloom__stem, .gift-box__lid {
    transition: none;
  }
  .gift-stage.is-opening .gift-spark i { animation: none; opacity: 0; }
}