:root {
  --bg: #f8f2e9;
  --bg-2: #efe2cf;
  --ink: #2f261f;
  --soft: #6d5a4e;
  --gold: #b78648;
  --wine: #7e2f39;
  --wine-deep: #64232b;
  --panel: #fffaf3;
  --border: #dcc8ae;
  --shadow: 0 18px 40px rgba(68, 42, 22, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 0%, #f6ead7 0%, transparent 35%),
    radial-gradient(circle at 90% 30%, #ead8bf 0%, transparent 30%),
    linear-gradient(145deg, var(--bg), var(--bg-2));
  min-height: 100vh;
}

.paper-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.14;
  background-image: radial-gradient(#000 0.5px, transparent 0.5px);
  background-size: 3px 3px;
}

.top-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% -10%, rgba(183, 134, 72, 0.15), transparent 45%);
}

.music-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
  border: 1px solid #a8865e;
  background: rgba(255, 250, 243, 0.92);
  color: var(--wine-deep);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(71, 44, 26, 0.15);
}

.music-toggle.is-playing {
  background: rgba(126, 47, 57, 0.95);
  color: #fff;
  border-color: #7e2f39;
}

.intro {
  min-height: 100vh;
  display: grid;
  place-content: center;
  padding: 1.5rem;
  text-align: center;
  position: relative;
}

.kicker {
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--soft);
  font-size: 0.78rem;
  margin-bottom: 0.45rem;
}

.script {
  margin: 0 0 1.2rem;
  color: var(--wine);
  font-family: "Allura", cursive;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.envelope {
  position: relative;
  width: min(680px, 94vw);
  height: min(420px, 68vw);
  max-height: 430px;
  margin: 0 auto;
  perspective: 1200px;
  z-index: 2;
}

.floral {
  position: absolute;
  top: 55%;
  --floral-w: clamp(130px, 16vw, 190px);
  width: var(--floral-w);
  height: clamp(230px, 30vw, 320px);
  padding: 8px;
  background: #fff;
  border-radius: 14px;
  object-fit: contain;
  object-position: center;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 1;
  opacity: 0.95;
  filter: drop-shadow(0 16px 18px rgba(69, 33, 26, 0.25));
  animation: floralSway 5.5s ease-in-out infinite alternate;
}

.floral-left {
  left: calc(50% - min(340px, 47vw) - var(--floral-w) - 18px);
}

.floral-right {
  right: calc(50% - min(340px, 47vw) - var(--floral-w) - 18px);
  animation-delay: 0.8s;
}

.envelope-back {
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, #f7ede1, #ecdac4);
  border: 1px solid #d8c4a7;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.flap {
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, 100% 0, 50% 54%);
  background: linear-gradient(165deg, #f2e2cf, #e6cfb1);
  transform-origin: top center;
  transition: transform 900ms ease;
  border-radius: 10px 10px 0 0;
}

.letter {
  position: absolute;
  width: 88%;
  left: 6%;
  top: 16%;
  background: #fffdf8;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(41, 29, 18, 0.14);
  padding: clamp(1rem, 2.6vw, 1.8rem);
  transform: translateY(24%);
  transition: transform 900ms ease;
}

.letter-tag {
  margin: 0;
  color: var(--soft);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.82rem;
}

h1,
h2,
h3 {
  font-family: "Playfair Display", serif;
  line-height: 1.15;
}

h1 {
  margin: 0.4rem 0;
  font-size: clamp(2rem, 5vw, 3.4rem);
}

h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

h3 {
  margin: 0.2rem 0;
  font-size: 1.4rem;
}

.type-line {
  color: var(--soft);
  min-height: 1.6rem;
  margin: 0;
}

.seal {
  position: absolute;
  left: 50%;
  top: 44%;
  transform: translate(-50%, -50%);
  width: 92px;
  height: 92px;
  border: 2px solid #8d3a44;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #b45260, var(--wine));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(84, 23, 32, 0.35);
  transition: transform 220ms ease;
}

.seal:hover {
  transform: translate(-50%, -50%) scale(1.03);
}

.open-tip {
  margin-top: 0.9rem;
  color: var(--soft);
  font-size: 0.95rem;
}

.envelope.open .flap {
  transform: rotateX(178deg);
}

.envelope.open .letter {
  transform: translateY(-26%);
}

.envelope.open .seal {
  opacity: 0;
  pointer-events: none;
}

.content {
  width: min(940px, 92vw);
  margin: 0 auto 2rem;
}

.hidden {
  display: none;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 8px 22px rgba(71, 44, 26, 0.08);
}

.chips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.chips article {
  background: #fff;
  border: 1px solid #e6d5bf;
  border-radius: 10px;
  padding: 0.9rem;
}

.memory-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.memory {
  background: #fffcf7;
  border: 1px dashed #d8bc98;
  border-radius: 10px;
  padding: 0.9rem;
}

.memory-title {
  margin: 0 0 0.3rem;
  font-weight: 700;
  color: var(--wine-deep);
}

.memory-copy {
  margin: 0;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.6rem;
}

.reason-card {
  text-align: left;
  border: 1px solid #d8bc98;
  background: #fffdf9;
  border-radius: 10px;
  padding: 0.8rem 0.9rem;
  color: var(--wine-deep);
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.reason-card:hover {
  transform: translateY(-2px);
  border-color: #b78648;
  box-shadow: 0 8px 18px rgba(90, 56, 32, 0.1);
}

.reason-card.active {
  border-color: var(--wine);
  background: #fff6f7;
}

.reason-output {
  margin: 0.85rem 0 0;
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  border: 1px solid #e0ccb1;
  background: #fffcf7;
}

.verse blockquote {
  margin: 0;
  font-style: italic;
  color: #5e4333;
}

.reference {
  margin: 0.6rem 0 0;
  color: var(--wine);
  font-weight: 700;
}

.mini-verses {
  margin-top: 0.9rem;
  border-top: 1px solid #e8d8c2;
  padding-top: 0.7rem;
}

.mini-verses p {
  margin: 0.24rem 0;
}

.ghost {
  padding: 0.72rem 1rem;
  border-radius: 999px;
  border: 2px solid var(--wine);
  background: transparent;
  color: var(--wine);
  font-weight: 700;
  cursor: pointer;
}

.signature {
  text-align: center;
}

.script.large {
  font-size: 2rem;
  margin: 0;
}

.signed {
  margin: 0.2rem 0;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.mini {
  margin: 0;
  color: var(--soft);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.spark {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #c88a41;
  pointer-events: none;
  animation: sparkle 1.2s ease-out forwards;
  z-index: 999;
}

.heart {
  position: fixed;
  width: 12px;
  height: 12px;
  background: #bb4d5a;
  transform: rotate(45deg);
  pointer-events: none;
  animation: floatUp 3.2s ease-out forwards;
  z-index: 999;
}

.heart::before,
.heart::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: inherit;
}

.heart::before {
  left: -6px;
}

.heart::after {
  top: -6px;
}

@keyframes floatUp {
  100% {
    opacity: 0;
    transform: rotate(45deg) translateY(-160px) scale(1.25);
  }
}

@keyframes sparkle {
  100% {
    opacity: 0;
    transform: translateY(-26px) scale(0.3);
  }
}

@keyframes floralSway {
  0% {
    transform: translateY(-50%) rotate(-2deg);
  }
  100% {
    transform: translateY(-50%) rotate(2deg);
  }
}

@media (max-width: 800px) {
  .music-toggle {
    top: 10px;
    right: 10px;
    font-size: 0.88rem;
  }

  .chips,
  .memory-grid,
  .reasons-grid {
    grid-template-columns: 1fr;
  }

  .envelope {
    height: min(360px, 74vw);
  }

  .floral {
    display: none;
  }

  .seal {
    width: 82px;
    height: 82px;
    font-size: 0.92rem;
  }
}