:root {
  --pink: #bd6f83;
  --pink-2: #d98b9c;
  --blush: #f5e9ec;
  --rose: #dfc0c8;
  --ink: #49343d;
  --muted: #806b73;
  --paper: #fffdf8;
  --cream: #f8f2eb;
  --flap: #f1e4d8;
  --body: #e7d8ca;
  --seal: #a94f68;
  --gold: #b39261;
  --shadow: 0 18px 50px rgba(67, 43, 52, 0.2);
  --safe-t: env(safe-area-inset-top);
  --safe-b: env(safe-area-inset-bottom);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  min-height: 100%;
  height: 100%;
}

body {
  font-family: "Poppins", sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 700px at 50% -10%, #fff7f2 0%, var(--blush) 42%, var(--rose) 100%);
  overflow: hidden;
  overscroll-behavior: none;
}

.petals {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
}

.petal {
  position: absolute;
  top: -20px;
  width: 10px;
  height: 14px;
  border-radius: 10px 2px 10px 2px;
  background: linear-gradient(135deg, #ffb3c6, #ff7eb3);
  opacity: 0.55;
  animation: fall linear infinite;
}

@keyframes fall {
  to {
    transform: translateY(110vh) rotate(360deg);
  }
}

[hidden] {
  display: none !important;
}

.scene {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  padding: calc(18px + var(--safe-t)) 18px calc(18px + var(--safe-b));
}

.intro {
  text-align: center;
  margin-bottom: 18px;
}

.eyebrow {
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.68rem;
  color: var(--muted);
}

.intro h1 {
  font-family: "Cormorant Garamond", serif;
  font-size: clamp(2.6rem, 10vw, 3.6rem);
  font-weight: 600;
  line-height: 1;
  margin: 8px 0 4px;
}

.italic {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  color: var(--muted);
}

.envelope-stage {
  display: grid;
  place-items: center;
  min-height: min(58dvh, 420px);
  perspective: 1200px;
}

.envelope {
  position: relative;
  width: min(92vw, 430px);
  height: min(58vw, 250px);
  transform-style: preserve-3d;
  filter: drop-shadow(var(--shadow));
}

.envelope-body {
  position: absolute;
  inset: 0;
  border-radius: 18px;
  background:
    radial-gradient(circle at 1px 1px, rgba(180, 120, 100, 0.14) 1px, transparent 0) 0 0 / 10px 10px,
    linear-gradient(180deg, #f4e4d2, var(--body));
  overflow: hidden;
  z-index: 1;
}

.envelope-body::before,
.envelope-body::after {
  content: "";
  position: absolute;
  bottom: 0;
  width: 72%;
  height: 78%;
  background: linear-gradient(180deg, #f7ebdd, #e7d3bf);
}

.envelope-pocket {
  position: absolute;
  inset: 42% 0 0;
  z-index: 4;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.24), transparent 44%),
    linear-gradient(180deg, #f3e4d4, #e3cdb8);
  clip-path: polygon(0 0, 50% 42%, 100% 0, 100% 100%, 0 100%);
  filter: drop-shadow(0 -3px 4px rgba(114, 76, 62, 0.13));
  pointer-events: none;
}

.envelope-body::before {
  left: 0;
  clip-path: polygon(0 0, 0 100%, 100% 100%);
}

.envelope-body::after {
  right: 0;
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.envelope-caption {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 16px;
  z-index: 5;
  display: grid;
  justify-items: center;
  gap: 2px;
  text-align: center;
}

.envelope-caption p {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: clamp(0.94rem, 4vw, 1.12rem);
  font-weight: 600;
  color: #8a5a4a;
  line-height: 1.15;
}

.envelope-caption span {
  color: #986e60;
  font-size: 0.65rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  line-height: 1.3;
}

.flap {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 58%;
  transform-origin: top center;
  transform-style: preserve-3d;
  z-index: 4;
  transition: transform 900ms cubic-bezier(0.2, 0.82, 0.22, 1);
}

.envelope.open .flap {
  transform: rotateX(180deg) translateZ(-1px);
}

.envelope.flap-open .flap {
  z-index: 1;
}

.flap-front,
.flap-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
}

.flap-front {
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.flap-front {
  background:
    radial-gradient(circle at 1px 1px, rgba(180, 120, 100, 0.16) 1px, transparent 0) 0 0 / 10px 10px,
    linear-gradient(180deg, #fff8f0, var(--flap));
  border-top-left-radius: 18px;
  border-top-right-radius: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 3%;
}

.flap-back {
  background: linear-gradient(180deg, #e7cbb3, #d9b79a);
  clip-path: polygon(0 100%, 100% 100%, 50% 0);
  transform: rotateX(180deg);
}

.flap-ornament {
  color: #d98973;
  letter-spacing: 0.4em;
  font-size: 0.72rem;
}

.flap-title {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  color: #7a4638;
  font-size: 0.96rem;
  margin-top: 2px;
}

.seal {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 78px;
  height: 78px;
  border: 0;
  background: none;
  z-index: 6;
  cursor: pointer;
}

.seal-ring {
  position: absolute;
  inset: -10px;
  border: 1.5px solid rgba(227, 107, 107, 0.55);
  border-radius: 50%;
  animation: pulse 2.2s ease-out infinite;
}

.seal-face {
  position: absolute;
  inset: 3px;
  border-radius: 47% 53% 50% 46% / 51% 45% 55% 49%;
  background:
    radial-gradient(ellipse at 32% 22%, rgba(255, 208, 183, 0.76), transparent 22%),
    radial-gradient(ellipse at 68% 78%, rgba(105, 24, 35, 0.46), transparent 34%),
    radial-gradient(circle at 36% 28%, #e78378 0, #c65359 42%, #a63847 76%, #812c3b 100%);
  box-shadow:
    0 0 0 2px #ad424b,
    0 0 0 4px rgba(135, 44, 54, 0.65),
    inset 0 2px 3px rgba(255, 229, 207, 0.68),
    inset 0 -6px 9px rgba(74, 15, 27, 0.48),
    0 3px 4px rgba(86, 34, 30, 0.24),
    0 10px 16px rgba(110, 38, 42, 0.26);
  color: #fff6ee;
  display: grid;
  place-items: center;
}

.seal-face::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(255, 219, 194, 0.3);
  border-radius: 48% 52% 46% 54% / 52% 46% 54% 48%;
  box-shadow:
    inset 0 2px 4px rgba(255, 210, 192, 0.25),
    0 1px 1px rgba(88, 16, 29, 0.3);
}

.seal-letter {
  font-family: "Cormorant Garamond", serif;
  font-size: 2rem;
  font-weight: 700;
  color: #a63c49;
  line-height: 1;
  text-shadow:
    0 1px 0 rgba(255, 204, 186, 0.8),
    0 -1px 1px rgba(80, 16, 28, 0.7);
  filter: drop-shadow(0 1px 1px rgba(255, 222, 199, 0.5));
}

.envelope.open .seal {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.55);
  pointer-events: none;
  transition: 220ms ease;
}

@keyframes pulse {
  0% {
    transform: scale(0.92);
    opacity: 0.7;
  }
  100% {
    transform: scale(1.18);
    opacity: 0;
  }
}

.book-slot {
  position: absolute;
  inset: 0;
  z-index: 3;
  overflow: hidden;
  border-radius: 18px;
  pointer-events: none;
}

.book-peek {
  position: absolute;
  left: 17%;
  right: 17%;
  top: 8%;
  height: 112%;
  display: flex;
  justify-content: center;
  transform: translateY(122%) scale(0.78);
  opacity: 0;
}

.envelope.book-rising .book-peek {
  animation: slideOut 900ms cubic-bezier(0.18, 0.78, 0.2, 1) forwards;
}

@keyframes slideOut {
  from {
    transform: translateY(122%) scale(0.78);
    opacity: 0;
  }
  to {
    transform: translateY(-50%) scale(1);
    opacity: 1;
  }
}

.mini-cover {
  position: relative;
  width: 74%;
  height: 100%;
  border: 1px solid rgba(138, 72, 81, 0.32);
  border-radius: 8px 12px 12px 8px;
  background:
    linear-gradient(90deg, rgba(105, 51, 65, 0.22) 0 9px, transparent 10px),
    linear-gradient(160deg, #fffaf5, #ffe4e9 55%, #ffc1d0);
  box-shadow: 5px 10px 18px rgba(90, 30, 50, 0.3), inset 5px 0 5px rgba(255, 255, 255, 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #7a3148;
  text-align: center;
  padding: 8px;
}

.mini-cover::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  bottom: 10px;
  width: 9px;
  background:
    radial-gradient(ellipse at center, #e7d5ca 0 24%, #66505a 30% 44%, transparent 49%)
    center top / 9px 13px repeat-y;
  filter: drop-shadow(1px 1px 1px rgba(54, 35, 40, 0.38));
}

.mini-cover span {
  font-family: "Dancing Script", cursive;
  font-size: 0.95rem;
}

.mini-cover strong {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.15rem;
}

.hint {
  text-align: center;
  margin-top: 22px;
  color: var(--muted);
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.book-scene {
  display: grid;
  place-items: center;
  background: linear-gradient(165deg, #ffdde1 0%, #f8c9d3 42%, #ee9ca7 100%);
}

.book-wrap {
  width: min(92vw, 430px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(28px) scale(0.94);
  transition: opacity 650ms ease, transform 750ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.book-scene.revealed .book-wrap {
  opacity: 1;
  transform: none;
}

.book {
  position: relative;
  width: 100%;
  height: min(68dvh, 600px);
  min-height: 340px;
  border: 1px solid rgba(115, 74, 73, 0.2);
  border-radius: 10px 16px 14px 14px;
  background: linear-gradient(180deg, #d9b6aa 0 15px, #fff6f1 15px);
  box-shadow:
    14px 18px 40px rgba(90, 30, 50, 0.28),
    inset 0 2px 0 rgba(255, 255, 255, 0.8);
}

.spiral-binding {
  position: absolute;
  top: -8px;
  left: 16px;
  right: 16px;
  z-index: 8;
  height: 28px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
}

.spiral-binding::before {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 8px;
  height: 7px;
  background: repeating-linear-gradient(
    90deg,
    transparent 0 4px,
    #80666a 4px 6px,
    transparent 6px 12px
  );
  filter: drop-shadow(0 1px 1px rgba(62, 37, 43, 0.45));
}

.spiral-binding span {
  position: relative;
  width: 12px;
  height: 25px;
  flex: 0 1 12px;
  border: 2px solid #80666a;
  border-radius: 50%;
  background: linear-gradient(90deg, #eadbd2 0 34%, #866d70 48% 65%, #d9c6bb 82%);
  box-shadow:
    1px 1px 2px rgba(62, 37, 43, 0.42),
    inset 1px 0 1px rgba(255, 255, 255, 0.85);
}

.spiral-binding span::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  top: 5px;
  bottom: 4px;
  border-radius: 50%;
  background: #593f48;
  box-shadow: inset 0 1px 2px rgba(20, 10, 14, 0.45);
}

.book-edge {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: -1px;
  height: 9px;
  background: repeating-linear-gradient(
    to right,
    #f7e7dc 0 8px,
    #ead3c6 8px 10px
  );
  border-radius: 2px;
  z-index: 1;
  pointer-events: none;
}

.pages {
  position: absolute;
  inset: 20px 0 8px;
  overflow: visible;
  border-radius: 7px 12px 0 0;
  perspective: 1800px;
  perspective-origin: center center;
  transform-style: preserve-3d;
  touch-action: pan-y;
  user-select: text;
}

.page {
  position: absolute;
  inset: 0;
  border-radius: 7px 12px 0 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.page-sheet {
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform-style: preserve-3d;
  border-radius: inherit;
  background: var(--paper);
  transform: rotateY(0deg) scaleX(1);
  box-shadow: 0 1px 1px rgba(75, 38, 45, 0.08);
}

.page-face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border: 1px solid rgba(130, 85, 80, 0.14);
  border-radius: inherit;
  clip-path: var(--edge-clip, polygon(0 0, 100% 0, 100% 100%, 0 100%));
  background: #fffaf5;
  backface-visibility: hidden;
}

.page-face.page-front {
  background:
    linear-gradient(180deg, rgba(167, 107, 95, 0.1), transparent 22px),
    radial-gradient(circle at 1px 1px, rgba(170, 120, 110, 0.08) 1px, transparent 0) 0 0 / 12px 12px,
    #fffaf5;
}

.page-face.page-back {
  transform: rotateY(180deg);
  background:
    linear-gradient(0deg, rgba(167, 107, 95, 0.1), transparent 22px),
    radial-gradient(circle at 1px 1px, rgba(170, 120, 110, 0.08) 1px, transparent 0) 0 0 / 12px 12px,
    #fffaf5;
  pointer-events: none;
}

.page-sheet::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.48),
    transparent 18%,
    rgba(82, 43, 48, 0.18) 72%,
    rgba(61, 34, 41, 0.34)
  );
  opacity: var(--shade-opacity, 0);
  backface-visibility: hidden;
  pointer-events: none;
}

.page-sheet::before {
  content: "";
  position: absolute;
  left: var(--curl-edge, auto);
  right: var(--curl-right, 0);
  top: 0;
  bottom: 0;
  z-index: 4;
  width: 15%;
  border-radius: 0 10% 10% 0;
  background: linear-gradient(
    270deg,
    rgba(100, 58, 60, 0.02),
    rgba(100, 58, 60, 0.2) 28%,
    rgba(255, 255, 255, 0.85) 72%,
    rgba(138, 91, 87, 0.25)
  );
  opacity: var(--curl-opacity, 0);
  transform: scaleX(var(--curl-scale, 0.35));
  transform-origin: var(--curl-origin, right center);
  pointer-events: none;
}

.page-content {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  padding: clamp(18px, 4.5vh, 28px) clamp(18px, 5vw, 28px) 18px clamp(24px, 6vw, 34px);
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(90deg, rgba(180, 110, 90, 0.08), transparent 18px),
    radial-gradient(circle at 1px 1px, rgba(170, 120, 110, 0.1) 1px, transparent 0) 0 0 / 12px 12px,
    var(--paper);
  overflow-y: auto;
  overscroll-behavior: contain;
  backface-visibility: hidden;
  user-select: text;
}

.page.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 2;
}

.page.exit {
  opacity: 1;
  visibility: visible;
  z-index: 3;
}

.page.exit .page-sheet {
  animation:
    pageFlip 760ms cubic-bezier(0.34, 0.08, 0.2, 1) both,
    pageLiftShadow 760ms ease-in-out both;
}

.page.exit.turn-back .page-sheet {
  animation-name: pageFlipReverse, pageLiftShadowReverse;
}

.page.exit.turn-back .page-sheet::after {
  background: linear-gradient(
    270deg,
    rgba(255, 255, 255, 0.48),
    transparent 18%,
    rgba(82, 43, 48, 0.18) 72%,
    rgba(61, 34, 41, 0.34)
  );
}

.page.exit.turn-back .page-sheet::before {
  border-radius: 10% 0 0 10%;
  background: linear-gradient(
    90deg,
    rgba(100, 58, 60, 0.02),
    rgba(100, 58, 60, 0.2) 28%,
    rgba(255, 255, 255, 0.85) 72%,
    rgba(138, 91, 87, 0.25)
  );
}

.page.exit.dragging .page-sheet,
.page.exit.settling .page-sheet {
  animation: none;
}

.page.exit.dragging .page-sheet {
  transition: none;
}

.page.exit.settling .page-sheet {
  transition:
    transform var(--settle-duration, 360ms) cubic-bezier(0.2, 0.75, 0.25, 1),
    box-shadow var(--settle-duration, 360ms) ease-out;
}

.page.exit.dragging .page-face {
  animation: none;
  transition: none;
}

.page.exit.settling .page-face {
  animation: none;
  transition: clip-path var(--settle-duration, 360ms) ease-out;
}

.page.exit.dragging .page-sheet::before,
.page.exit.dragging .page-sheet::after {
  animation: none;
  transition: none;
}

.page.exit.settling .page-sheet::before,
.page.exit.settling .page-sheet::after {
  animation: none;
  transition:
    opacity var(--settle-duration, 360ms) ease-out,
    transform var(--settle-duration, 360ms) ease-out;
}

.page.exit .page-sheet::before {
  animation: pageCurl 760ms ease-in-out both;
}

.page.exit .page-sheet::after {
  animation: pageShade 760ms ease-in-out both;
}

.page.exit .page-face {
  animation: pageEdge 760ms ease-in-out both;
}

.page.exit.turn-back .page-face {
  animation-name: pageEdgeReverse;
}

@keyframes pageFlip {
  from {
    transform: rotateX(0deg) scaleY(1);
  }
  22% {
    transform: rotateX(var(--turn-mid-angle, 62deg)) scaleY(0.985);
  }
  48% {
    transform: rotateX(var(--turn-late-angle, 145deg)) scaleY(0.94);
  }
  to {
    transform: rotateX(var(--turn-angle, 180deg)) scaleY(1);
  }
}

@keyframes pageEdge {
  from {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
  22% {
    clip-path: polygon(
      0 0, 100% 0, 100% 100%, 90% 98%, 80% 94%, 70% 90%,
      60% 88%, 50% 87%, 40% 88%, 30% 90%, 20% 94%, 10% 98%, 0 100%
    );
  }
  48% {
    clip-path: polygon(
      0 0, 100% 0, 100% 100%, 90% 95%, 80% 88%, 70% 84%,
      60% 82%, 50% 81%, 40% 82%, 30% 84%, 20% 88%, 10% 95%, 0 100%
    );
  }
  to {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
}

@keyframes pageFlipReverse {
  from {
    transform: rotateX(0deg) scaleY(1);
  }
  22% {
    transform: rotateX(var(--turn-mid-angle, -62deg)) scaleY(0.985);
  }
  48% {
    transform: rotateX(var(--turn-late-angle, -145deg)) scaleY(0.94);
  }
  to {
    transform: rotateX(var(--turn-angle, -180deg)) scaleY(1);
  }
}

@keyframes pageEdgeReverse {
  from {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
  22% {
    clip-path: polygon(
      0 0, 10% 2%, 20% 6%, 30% 10%, 40% 12%, 50% 13%,
      60% 12%, 70% 10%, 80% 6%, 90% 2%, 100% 0, 100% 100%, 0 100%
    );
  }
  48% {
    clip-path: polygon(
      0 0, 10% 5%, 20% 12%, 30% 16%, 40% 18%, 50% 19%,
      60% 18%, 70% 16%, 80% 12%, 90% 5%, 100% 0, 100% 100%, 0 100%
    );
  }
  to {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
}

@keyframes pageCurl {
  0%, 100% {
    opacity: 0;
    transform: scaleY(0.35);
  }
  28%, 64% {
    opacity: 0.9;
    transform: scaleY(1);
  }
}

@keyframes pageLiftShadow {
  0%, 100% {
    box-shadow: 0 1px 1px rgba(75, 38, 45, 0.08);
  }
  38%, 60% {
    box-shadow: 0 18px 14px rgba(75, 38, 45, 0.3);
  }
}

@keyframes pageLiftShadowReverse {
  0%, 100% {
    box-shadow: 0 -1px 1px rgba(75, 38, 45, 0.08);
  }
  38%, 60% {
    box-shadow: 0 -18px 14px rgba(75, 38, 45, 0.3);
  }
}

@keyframes pageShade {
  0%, 100% {
    opacity: 0;
  }
  35%, 62% {
    opacity: 0.78;
  }
}

.kicker {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--pink);
  font-weight: 500;
}

.page h2 {
  font-family: "Dancing Script", cursive;
  font-size: clamp(1.7rem, 7vw, 2.35rem);
  color: #c44569;
  line-height: 1.15;
  margin: 6px 0 10px;
}

.page p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: #5b3a44;
}

.letter {
  font-size: 0.84rem;
  line-height: 1.65;
  overflow: visible;
  padding-right: 4px;
  white-space: normal;
}

.sign {
  margin-top: 12px;
  font-family: "Dancing Script", cursive;
  font-size: 2.1rem;
  font-weight: 600;
  color: #c44569;
}

.cover-page {
  text-align: center;
}

.cover-page .page-front .page-content,
.page-back.cover-back .page-content {
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(160deg, #fff8f6, #ffe0e8 55%, #ffcdd9);
}

.cover-page .page-front h2,
.page-back.cover-back h2 {
  font-size: clamp(2.2rem, 9vw, 3rem);
  margin-bottom: 0;
}

.cover-sub {
  font-family: "Dancing Script", cursive;
  font-size: clamp(2rem, 8vw, 2.6rem);
  color: #c44569;
  margin: 2px 0 10px;
}

.cover-note {
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 16rem;
}

.cake-stage {
  perspective: 700px;
  height: 230px;
  display: grid;
  place-items: center;
  margin: 8px 0 6px;
}

.cake {
  position: relative;
  width: 180px;
  height: 150px;
  padding: 0;
  border: 0;
  background: none;
  transform: rotateX(18deg);
  cursor: pointer;
}

.plate {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 210px;
  height: 28px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, #fff, #f0d9cf);
  border-radius: 50%;
  box-shadow: 0 10px 16px rgba(90, 40, 50, 0.18);
}

.layer {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 18px;
}

.layer.base {
  bottom: 22px;
  width: 150px;
  height: 42px;
  background: linear-gradient(180deg, #ffb3c6, #ff7ea6);
  box-shadow: inset 0 8px 0 rgba(255, 255, 255, 0.28);
}

.layer.mid {
  bottom: 52px;
  width: 120px;
  height: 38px;
  background: linear-gradient(180deg, #ffe0c7, #f4b183);
  box-shadow: inset 0 8px 0 rgba(255, 255, 255, 0.3);
}

.layer.top {
  bottom: 78px;
  width: 90px;
  height: 32px;
  background: linear-gradient(180deg, #fff1f4, #ffc2d4);
}

.drip {
  position: absolute;
  bottom: 72px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 16px;
  background: #ff8fab;
  border-radius: 0 0 40px 40px;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 78% 40%, 62% 100%, 48% 30%, 32% 100%, 18% 40%, 8% 100%, 0 0);
}

.candles {
  position: absolute;
  left: 50%;
  bottom: 108px;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 6;
}

.candle {
  width: 7px;
  height: 22px;
  border-radius: 2px;
  background: linear-gradient(#fff, #ffd6e0);
  position: relative;
}

.flame {
  position: absolute;
  left: 50%;
  top: -14px;
  width: 8px;
  height: 14px;
  transform: translateX(-50%);
  background: radial-gradient(circle at 50% 70%, #fff 0 20%, #ffd36a 40%, #ff7a3c);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  animation: flicker 0.25s infinite alternate;
}

.cake.blown .flame {
  display: none;
}

.smoke {
  display: none;
  position: absolute;
  left: 50%;
  top: -18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(120, 120, 120, 0.35);
}

.cake.blown .smoke {
  display: block;
  animation: smoke 1.2s ease forwards;
}

@keyframes flicker {
  to {
    transform: translateX(-50%) scale(1.12) rotate(-8deg);
    opacity: 0.85;
  }
}

@keyframes smoke {
  to {
    transform: translate(-50%, -18px);
    opacity: 0;
  }
}

.cake-btn {
  border: 0;
  margin: 8px auto 0;
  display: block;
  background: linear-gradient(135deg, #ff85a1, #ffb3c6);
  color: #fff;
  padding: 11px 22px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.9rem;
  box-shadow: 0 8px 16px rgba(255, 100, 150, 0.28);
  cursor: pointer;
  transition: transform 160ms ease;
}

.cake-btn:active {
  transform: scale(0.97);
}

.reasons {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.reason {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 14px;
  padding: 10px 12px;
  font-size: 0.86rem;
  line-height: 1.45;
}

.book-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  justify-content: space-between;
}

.nav-btn {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
  color: #c44569;
  font-size: 1.6rem;
  line-height: 1;
  box-shadow: 0 6px 14px rgba(90, 30, 50, 0.12);
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

.nav-btn:not(:disabled):active {
  transform: scale(0.92);
}

.page-count {
  min-width: 62px;
  text-align: center;
  color: #885868;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.nav-btn:disabled {
  opacity: 0.35;
}

.dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px;
  max-width: 160px;
}

.dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
}

.dots span.on {
  background: #fff;
  transform: scale(1.25);
}

.swipe-hint {
  color: rgba(74, 44, 53, 0.7);
  font-size: 0.75rem;
}

.page {
  scrollbar-width: none;
}

.page-content {
  scrollbar-width: none;
}

.page-content::-webkit-scrollbar {
  display: none;
}

/* Portrait, top-bound notebook with the page hinge directly under the spiral. */
.book {
  height: min(82dvh, 650px);
  min-height: 350px;
  border-radius: 12px;
  background:
    linear-gradient(180deg, #c7a99b 0 16px, transparent 17px),
    linear-gradient(90deg, #fff6f1, #f5e8dc 100%);
  box-shadow:
    14px 18px 40px rgba(90, 30, 50, 0.28),
    inset 0 2px 0 rgba(255, 255, 255, 0.8);
}

.spiral-binding {
  top: -8px;
  bottom: auto;
  left: 16px;
  right: 16px;
  width: auto;
  height: 28px;
  flex-direction: row;
  align-items: flex-start;
}

.spiral-binding::before {
  left: 4px;
  right: 4px;
  top: 8px;
  bottom: auto;
  width: auto;
  height: 7px;
  background: repeating-linear-gradient(
    90deg,
    transparent 0 4px,
    #80666a 4px 6px,
    transparent 6px 12px
  );
}

.spiral-binding span {
  width: 12px;
  min-height: 25px;
  flex: 0 1 12px;
  border-radius: 50%;
  transform: none;
}

.spiral-binding span::after {
  left: 2px;
  right: 2px;
  top: 5px;
  bottom: 4px;
}

.pages {
  inset: 20px 9px 8px 0;
  border-radius: 7px 7px 0 0;
  perspective: 1600px;
  perspective-origin: center top;
  touch-action: pan-y;
}

.page-corner {
  position: absolute;
  z-index: 6;
  width: 58px;
  height: 58px;
  pointer-events: auto;
  touch-action: none;
  cursor: grab;
}

.page-corner:active {
  cursor: grabbing;
}

.page-corner::after {
  content: "";
  position: absolute;
  width: 21px;
  height: 21px;
  opacity: 0.42;
  transition: opacity 180ms ease;
}

.page-corner:hover::after {
  opacity: 0.9;
}

.page-corner.top-left { top: 0; left: 0; }
.page-corner.top-right { top: 0; right: 0; }
.page-corner.bottom-left { bottom: 0; left: 0; }
.page-corner.bottom-right { bottom: 0; right: 0; }

.page-corner.top-left::after {
  top: 0; left: 0;
  background: linear-gradient(135deg, rgba(160, 128, 115, 0.18), transparent 66%);
}
.page-corner.top-right::after {
  top: 0; right: 0;
  background: linear-gradient(225deg, rgba(160, 128, 115, 0.18), transparent 66%);
}
.page-corner.bottom-left::after {
  bottom: 0; left: 0;
  background: linear-gradient(45deg, rgba(160, 128, 115, 0.18), transparent 66%);
}
.page-corner.bottom-right::after {
  bottom: 0; right: 0;
  background: linear-gradient(315deg, rgba(160, 128, 115, 0.18), transparent 66%);
}

.page-content {
  padding: clamp(24px, 4.5vh, 32px) clamp(18px, 5vw, 28px) 44px clamp(34px, 8vw, 42px);
  background:
    linear-gradient(90deg, transparent 0 27px, rgba(219, 119, 133, 0.22) 27px 28px, transparent 28px),
    repeating-linear-gradient(to bottom, transparent 0 21px, rgba(142, 151, 167, 0.2) 21px 22px),
    linear-gradient(180deg, #fffefa, #fffaf4);
  line-height: 22px;
}

.page-content p {
  line-height: 22px;
}

.page-content::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 12px;
  right: 12px;
  height: 8px;
  background: radial-gradient(circle, rgba(114, 89, 79, 0.46) 1.1px, transparent 1.5px) 0 0 / 20px 8px repeat-x;
  pointer-events: none;
}

.page-sheet {
  transform-origin: center top;
  box-shadow: 0 2px 2px rgba(75, 38, 45, 0.08), 0 8px 14px rgba(75, 38, 45, 0.08);
}

.page-face {
  border-radius: 7px 7px 0 0;
}

.page-face.page-front,
.page-face.page-back {
  background:
    linear-gradient(90deg, transparent 0 27px, rgba(219, 119, 133, 0.22) 27px 28px, transparent 28px),
    repeating-linear-gradient(to bottom, transparent 0 21px, rgba(142, 151, 167, 0.2) 21px 22px),
    #fffefa;
}

.page-face.page-back {
  transform: rotateX(180deg);
}

.page-scroll-cue {
  position: absolute;
  z-index: 6;
  right: 10px;
  bottom: 8px;
  padding: 5px 10px;
  border: 1px solid rgba(131, 70, 91, 0.28);
  border-radius: 999px;
  background: #fff7ec;
  box-shadow: 0 4px 12px rgba(81, 53, 61, 0.2);
  color: #684451;
  font: 600 0.66rem "Poppins", sans-serif;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  pointer-events: none;
}

.page-scroll-cue.visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.page-sheet::after {
  background: linear-gradient(180deg, rgba(80, 49, 42, 0.24), transparent 38%, rgba(70, 43, 46, 0.14));
}

.page-sheet::before {
  left: 0;
  right: 0;
  top: auto;
  bottom: 0;
  width: auto;
  height: 16%;
  border-radius: 0 0 8% 8%;
  background: linear-gradient(180deg, rgba(100, 58, 60, 0.02), rgba(100, 58, 60, 0.2) 28%, rgba(255, 255, 255, 0.82) 72%, rgba(138, 91, 87, 0.25));
  transform: scaleY(var(--curl-scale, 0.35));
  transform-origin: center bottom;
}

.page.exit.turn-back .page-sheet::after {
  background: linear-gradient(0deg, rgba(80, 49, 42, 0.24), transparent 38%, rgba(70, 43, 46, 0.14));
}

.page.exit.turn-back .page-sheet::before {
  border-radius: 8% 8% 0 0;
  background: linear-gradient(0deg, rgba(100, 58, 60, 0.02), rgba(100, 58, 60, 0.2) 28%, rgba(255, 255, 255, 0.82) 72%, rgba(138, 91, 87, 0.25));
  transform-origin: center top;
}

/* The notebook now uses the tear and return motions instead of the old flip. */
.page.exit .page-sheet,
.page.exit .page-face,
.page.exit .page-sheet::before,
.page.exit .page-sheet::after {
  animation: none;
}

.page.exit.tear-away .page-sheet {
  transform-origin: center top;
  animation: pageTearFall 850ms cubic-bezier(0.44, 0.02, 0.72, 0.38) forwards;
}

.page.exit.tear-away .page-face {
  animation: pageTearEdge 850ms ease-in forwards;
}

.page.rising {
  z-index: 4;
  opacity: 1;
  visibility: visible;
  pointer-events: none;
}

.page.rising .page-sheet {
  transform-origin: center bottom;
  animation: pageRiseToSpiral 760ms cubic-bezier(0.2, 0.78, 0.25, 1) forwards;
}

.page.exit.under-rise .page-sheet,
.page.exit.under-rise .page-face {
  animation: none !important;
}

.page.exit.under-rise .page-sheet {
  transform: none !important;
  box-shadow: 0 2px 2px rgba(75, 38, 45, 0.08) !important;
}

.page.exit.under-rise .page-sheet::before,
.page.exit.under-rise .page-sheet::after {
  animation: none !important;
  opacity: 0 !important;
}

.pages::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  opacity: 0;
  background:
    linear-gradient(90deg, transparent 0 27px, rgba(219, 119, 133, 0.22) 27px 28px, transparent 28px),
    repeating-linear-gradient(to bottom, transparent 0 21px, rgba(142, 151, 167, 0.2) 21px 22px),
    #fffefa;
  transition: opacity 160ms ease;
  pointer-events: none;
}

.pages.falling-page::before {
  opacity: 1;
}

.page.fade-in .page-sheet {
  animation: pageContentReveal 600ms ease both;
}

@keyframes pageTearFall {
  0% { transform: translateY(0) rotateX(0deg) rotateZ(0deg) scale(1); opacity: 1; box-shadow: 0 1px 2px rgba(75, 38, 45, 0.08); }
  24% { transform: translateY(12px) rotateX(7deg) rotateZ(-1deg) scale(0.995); opacity: 1; box-shadow: 0 12px 15px rgba(75, 38, 45, 0.2); }
  100% { transform: translateY(118%) rotateX(12deg) rotateZ(4deg) scale(0.91); opacity: 0; box-shadow: 0 22px 26px rgba(75, 38, 45, 0.02); }
}

@keyframes pageTearEdge {
  0%, 18% { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
  36% {
    clip-path: polygon(0 0, 4% 2%, 8% 0, 12% 3%, 17% 1%, 22% 4%, 28% 1%, 34% 3%, 40% 0, 47% 4%, 53% 1%, 60% 3%, 66% 0, 72% 3%, 78% 1%, 84% 4%, 90% 1%, 96% 3%, 100% 0, 100% 100%, 0 100%);
  }
  100% {
    clip-path: polygon(0 0, 4% 4%, 8% 0, 12% 6%, 17% 2%, 22% 7%, 28% 1%, 34% 5%, 40% 0, 47% 7%, 53% 2%, 60% 6%, 66% 0, 72% 5%, 78% 1%, 84% 7%, 90% 2%, 96% 6%, 100% 0, 100% 100%, 0 100%);
  }
}

@keyframes pageRiseToSpiral {
  from { transform: translateY(105%) rotateX(-8deg) scaleY(0.98); box-shadow: 0 -18px 22px rgba(75, 38, 45, 0.22); }
  78% { transform: translateY(-2%) rotateX(1deg) scaleY(1.005); box-shadow: 0 -4px 8px rgba(75, 38, 45, 0.12); }
  to { transform: translateY(0) rotateX(0) scaleY(1); box-shadow: 0 2px 2px rgba(75, 38, 45, 0.08); }
}

@keyframes pageContentReveal {
  from { opacity: 0; }
  to { opacity: 1; }
}

.book-edge {
  left: auto;
  right: 2px;
  top: 25px;
  bottom: 8px;
  width: 8px;
  height: auto;
  background: repeating-linear-gradient(to right, #f7e7dc 0 3px, #ead3c6 3px 5px);
  border-radius: 0 3px 3px 0;
}

@media (max-width: 380px) {
  .pages {
    inset: 20px 8px 8px 0;
  }

  .page-illustration {
    min-height: 96px;
  }
}

@media (min-width: 720px) {
  .book {
    width: 420px;
  }
}

@media (max-height: 700px) {
  .book {
    height: calc(100dvh - 128px - var(--safe-t) - var(--safe-b));
    min-height: 320px;
  }
}

@media (max-width: 380px) {
  .book {
    height: min(calc(100dvh - 128px - var(--safe-t) - var(--safe-b)), 650px);
    min-height: 300px;
  }

  .page-content {
    padding: 16px 16px 44px 36px;
  }

  .page p {
    font-size: 0.86rem;
  }

  .letter {
    font-size: 0.79rem;
    line-height: 1.55;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.book-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  column-gap: 10px;
  row-gap: 7px;
}

.nav-btn {
  flex: none;
  width: auto;
  min-width: 94px;
  height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font: 500 0.78rem "Poppins", sans-serif;
}

.nav-btn:first-child { justify-self: start; }
.nav-btn:last-child { justify-self: end; }

.nav-arrow {
  font-size: 1rem;
  line-height: 1;
}

.dots {
  grid-column: 1 / -1;
  grid-row: 2;
  width: 100%;
  max-width: none;
  gap: 4px;
}

/* A coordinated keepsake palette and a clean, soft-lit presentation. */
body {
  background:
    radial-gradient(ellipse at 50% 5%, rgba(255, 255, 255, 0.92), transparent 38%),
    linear-gradient(155deg, #fbf5f1 0%, #f2e5e9 52%, #dec5cd 100%);
}

.petal {
  background: linear-gradient(135deg, #e5a6b3, #b96e84);
  opacity: 0.28;
}

.intro .eyebrow {
  color: #92747d;
  letter-spacing: 0.24em;
}

.intro h1 {
  color: #573b47;
  text-shadow: 0 3px 16px rgba(139, 91, 108, 0.1);
}

.intro .from {
  color: #8b7079;
  font-size: 1.12rem;
}

.hint {
  display: table;
  margin: 18px auto 0;
  padding: 9px 18px;
  border: 1px solid rgba(154, 112, 124, 0.18);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.48);
  color: #836a73;
  letter-spacing: 0.08em;
}

.envelope {
  filter: drop-shadow(0 22px 34px rgba(79, 49, 60, 0.2));
}

.envelope-body {
  background:
    radial-gradient(circle at 1px 1px, rgba(128, 100, 81, 0.1) 1px, transparent 0) 0 0 / 12px 12px,
    linear-gradient(145deg, #f2e6d8, #e2d0bd);
}

.envelope-pocket {
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.38), transparent 44%),
    linear-gradient(160deg, #ead9cf, #d9c0bd);
}

.envelope-caption p { color: #72515a; }
.envelope-caption span { color: #8d7378; }

.flap-front {
  background:
    radial-gradient(circle at 1px 1px, rgba(128, 100, 81, 0.08) 1px, transparent 0) 0 0 / 12px 12px,
    linear-gradient(160deg, #fffaf5, #eee0d6);
}

.flap-back { background: linear-gradient(160deg, #d9c1b8, #c7a4a5); }
.flap-title { color: #72505b; }
.flap-ornament { color: #b39261; }

.envelope.book-rising .book-slot {
  overflow: visible;
  clip-path: inset(-160px 0 0 0 round 18px);
}

.seal-face {
  background:
    radial-gradient(ellipse at 32% 22%, rgba(255, 232, 214, 0.72), transparent 24%),
    radial-gradient(circle at 36% 28%, #d58a98 0, #b96179 48%, #914258 100%);
  box-shadow:
    0 0 0 2px #a95269,
    0 0 0 5px rgba(179, 146, 97, 0.48),
    inset 0 2px 4px rgba(255, 238, 224, 0.6),
    inset 0 -6px 10px rgba(73, 33, 48, 0.34),
    0 12px 20px rgba(94, 47, 62, 0.22);
}

.seal-letter {
  color: #fff5e9;
  text-shadow: 0 1px 2px rgba(74, 35, 47, 0.34);
}

.book-scene {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 255, 255, 0.8), transparent 42%),
    linear-gradient(155deg, #f9f2ee 0%, #f1e4e8 54%, #dec5cd 100%);
}

.book {
  border-color: rgba(116, 79, 83, 0.16);
  background:
    linear-gradient(180deg, #c9ada2 0 16px, transparent 17px),
    linear-gradient(90deg, #fffdf8, #f6eee5 100%);
  box-shadow:
    0 20px 42px rgba(79, 49, 60, 0.2),
    inset 0 2px 0 rgba(255, 255, 255, 0.86);
}

.spiral-binding span {
  border-color: #89766f;
  background: linear-gradient(90deg, #f0e4d2 0 34%, #927966 48% 65%, #dfc7a9 82%);
}

.page h2 { color: #a64e68; }
.kicker { color: #9a6878; }
.page p { color: #56434a; }

.cover-page .page-front .page-content,
.page-back.cover-back .page-content {
  background:
    radial-gradient(ellipse at 50% 20%, rgba(255, 255, 255, 0.72), transparent 55%),
    linear-gradient(155deg, #fff8f1, #f1dce1 58%, #e8c5cf);
}

.nav-btn {
  border: 1px solid rgba(146, 102, 116, 0.14);
  background: rgba(255, 253, 248, 0.82);
  color: #805461;
}

#nextBtn {
  border-color: transparent;
  background: linear-gradient(135deg, #b96980, #985269);
  color: #fffaf5;
  box-shadow: 0 7px 16px rgba(151, 78, 102, 0.22);
}

.nav-btn:disabled {
  background: rgba(255, 253, 248, 0.42);
  box-shadow: none;
}

#nextBtn:disabled {
  color: rgba(255, 250, 245, 0.68);
  background: linear-gradient(135deg, #c99aa5, #b78695);
}

.dots span { background: rgba(160, 116, 129, 0.22); }
.dots span.on { background: #a95b72; }

.cake-btn {
  background: linear-gradient(135deg, #b96980, #d18a9a);
  box-shadow: 0 8px 16px rgba(151, 78, 102, 0.2);
}

.cover-page .cover-sub {
  margin: 8px 0 16px;
  font-size: clamp(2.35rem, 12vw, 3.5rem);
  line-height: 1;
  color: #a64e68;
  text-shadow: 0 3px 14px rgba(166, 78, 104, 0.14);
}

.cake-surprise {
  width: min(100%, 300px);
  margin: 14px auto 4px;
  padding: 15px 16px 13px;
  display: grid;
  justify-items: center;
  gap: 7px;
  border: 1px solid rgba(179, 146, 97, 0.34);
  border-radius: 18px;
  background: linear-gradient(145deg, #fffaf0, #f8e9e7);
  box-shadow: 0 8px 20px rgba(91, 57, 66, 0.12);
  opacity: 0;
  transform: translateY(9px) scale(0.98);
  transition: opacity 500ms ease, transform 500ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.cake-surprise.shown {
  opacity: 1;
  transform: none;
}

.cake-surprise p {
  color: #58434a;
  text-align: center;
  font-size: 0.82rem;
}

.surprise-star {
  color: #b39261;
  font-size: 1.25rem;
}

.surprise-sign {
  justify-self: end;
  color: #a64e68;
  font: 600 1.12rem "Dancing Script", cursive;
}

.photo-page-content h2,
.photo-caption,
.photo-note {
  text-align: center;
}

.photo-page-content h2 {
  margin: 4px 0 8px;
}

.photo-frame {
  position: relative;
  isolation: isolate;
  width: min(100%, 320px);
  height: min(38dvh, 280px);
  min-height: 160px;
  box-sizing: border-box;
  flex: 0 0 auto;
  margin: 4px auto 7px;
  overflow: hidden;
  border: 1px solid rgba(179, 146, 97, 0.26);
  border-radius: 17px;
  background: #f2eae5;
  box-shadow: 0 7px 16px rgba(81, 53, 61, 0.12);
}

.photo-image {
  display: block;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: 50% 50%;
}

@media (max-width: 600px) {
  .photo-image {
    object-position: 50% 34%;
  }
}

.photo-caption {
  margin: 4px auto 3px;
  color: #9b526b;
  font: 600 clamp(1.3rem, 5.6vw, 1.55rem)/1.1 "Cormorant Garamond", serif;
  font-style: italic;
}

.photo-note {
  max-width: 30rem;
  margin: 0 auto;
  font-size: 0.8rem !important;
}

.page-content .sign {
  font-size: clamp(1.8rem, 7vw, 2.1rem);
  font-weight: 600;
  line-height: 1;
  color: #a64e68;
}