/* ============================================================
   Mother's Day Card — Style Sheet
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Palette — warm golden yellow */
  --blush:       hsl(45, 70%, 93%);
  --blush-deep:  hsl(42, 60%, 78%);
  --rose:        hsl(40, 55%, 58%);
  --rose-dark:   hsl(35, 45%, 38%);
  --lavender:    hsl(48, 50%, 90%);
  --sage:        hsl(90, 25%, 80%);
  --cream:       hsl(45, 55%, 97%);
  --warm-white:  hsl(42, 40%, 99%);
  --text:        hsl(38, 25%, 25%);
  --text-light:  hsl(38, 18%, 48%);

  /* Typography */
  --font-serif:  'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:   'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --section-pad: clamp(4rem, 10vw, 8rem);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--warm-white);
  overflow-x: hidden;
  line-height: 1.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- Utility ---------- */
.container {
  width: min(92%, 720px);
  margin: 0 auto;
}

.section {
  position: relative;
  padding: var(--section-pad) 0;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Fade-up (hero) ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.delay-1 { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; }
.delay-3 { animation-delay: 0.9s; }

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   FLOATING PETALS
   ============================================================ */
#petals-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}

.petal {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50% 0 50% 50%;
  opacity: 0;
  will-change: transform;
  animation: petalFall linear infinite;
}

@keyframes petalFall {
  0% {
    opacity: 0;
    transform: translate(0, -20px) rotate(0deg) scale(0.8);
  }
  10% {
    opacity: 0.7;
  }
  90% {
    opacity: 0.5;
  }
  100% {
    opacity: 0;
    transform: translate(var(--drift), 105vh) rotate(var(--spin)) scale(0.4);
  }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(
    180deg,
    var(--warm-white) 0%,
    var(--blush) 50%,
    var(--lavender) 100%
  );
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.hero-pre {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(0.8rem, 2vw, 1rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-light);
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(2.6rem, 8vw, 5.5rem);
  line-height: 1.1;
  color: var(--rose-dark);
  max-width: 15ch;
}

.hero-flower img {
  width: clamp(180px, 30vw, 280px);
  filter: drop-shadow(0 12px 40px hsla(40, 30%, 60%, 0.2));
  animation: gentleFloat 6s ease-in-out infinite;
}

@keyframes gentleFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

/* Open button */
.btn-open {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: 100px;
  background: var(--rose);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 20px hsla(40, 40%, 65%, 0.35);
}
.btn-open:hover {
  background: var(--rose-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px hsla(40, 40%, 55%, 0.4);
}
.btn-open:active {
  transform: translateY(0);
}
.btn-open svg {
  animation: bounceDown 2s ease-in-out infinite;
}

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(4px); }
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 40px;
  border: 2px solid var(--rose);
  border-radius: 12px;
  opacity: 0.4;
}
.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--rose);
  border-radius: 2px;
  margin: 6px auto 0;
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50%      { opacity: 0.3; transform: translateY(12px); }
}

/* ============================================================
   FULLSCREEN ENVELOPE OVERLAY
   ============================================================ */
.envelope-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: linear-gradient(160deg, hsl(42, 35%, 92%) 0%, hsl(38, 30%, 85%) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.envelope-overlay.opening {
  pointer-events: none;
}

.envelope-overlay.gone {
  opacity: 0;
  transform: translateY(-100vh) scale(0.85);
  pointer-events: none;
}

.envelope-overlay.hidden {
  display: none;
}

.envelope-scene {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  width: min(90%, 440px);
}

/* "for Mom" label */
.envelope-label {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 300;
  font-style: italic;
  color: var(--rose-dark);
  opacity: 0;
  animation: fadeUp 1s 0.3s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* ---------- Envelope Container ---------- */
.envelope-container {
  position: relative;
  width: 100%;
  aspect-ratio: 5 / 3;
  perspective: 900px;
  opacity: 0;
  animation: fadeUp 1s 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* Envelope back */
.envelope-back {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, hsl(38, 50%, 82%) 0%, hsl(35, 45%, 75%) 100%);
  border-radius: 14px;
  box-shadow:
    0 4px 12px hsla(35, 30%, 40%, 0.1),
    0 20px 60px hsla(35, 30%, 40%, 0.12);
  border: 1px solid hsla(35, 40%, 70%, 0.5);
  z-index: 1;
}

/* Envelope front — lower portion */
.envelope-front {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 58%;
  background: linear-gradient(160deg, hsl(40, 55%, 88%) 0%, hsl(38, 50%, 82%) 100%);
  border-radius: 0 0 14px 14px;
  z-index: 3;
  border-top: 1px solid hsla(35, 35%, 72%, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 1rem;
}

.envelope-front-text {
  font-family: var(--font-serif);
  font-size: clamp(0.85rem, 2.2vw, 1rem);
  font-style: italic;
  color: hsla(35, 30%, 50%, 0.6);
  letter-spacing: 0.05em;
}

/* Inner fold lines */
.envelope-front::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  border-right: 1px solid hsla(35, 25%, 65%, 0.15);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

.envelope-front::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  border-left: 1px solid hsla(35, 25%, 65%, 0.15);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}

/* ---------- Envelope Flap ---------- */
.envelope-flap {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 55%;
  z-index: 4;
  transform-origin: top center;
  transform: rotateX(0deg);
  transition: transform 0.9s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.envelope-flap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, hsl(38, 48%, 78%) 0%, hsl(36, 45%, 73%) 100%);
  clip-path: polygon(0 0, 50% 100%, 100% 0);
  border-radius: 14px 14px 0 0;
}

.envelope-flap::after {
  content: '';
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, 50% 100%, 100% 0);
  box-shadow: inset 0 -10px 24px hsla(35, 30%, 50%, 0.08);
  pointer-events: none;
}

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

/* ---------- Wax Seal ---------- */
.envelope-seal {
  position: absolute;
  z-index: 5;
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, hsl(42, 70%, 65%), hsl(35, 60%, 42%) 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow:
    0 3px 8px hsla(35, 50%, 30%, 0.25),
    0 6px 20px hsla(35, 50%, 30%, 0.15),
    inset 0 1px 3px hsla(45, 80%, 80%, 0.3);
  transition: opacity 0.5s 0.2s, transform 0.5s 0.2s;
}

.envelope-overlay.opening .envelope-seal {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.4) rotate(20deg);
}

/* ---------- Hint text ---------- */
.envelope-hint {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-light);
  opacity: 0;
  animation: fadeUp 0.8s 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.envelope-hint::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--blush-deep);
  margin: 0.75rem auto 0;
  border-radius: 1px;
  animation: subtlePulse 2.5s ease-in-out infinite;
}

.envelope-overlay.opening .envelope-hint {
  opacity: 0 !important;
  transition: opacity 0.3s;
}

/* ---------- Site Content (hidden until envelope opens) ---------- */
.site-content {
  opacity: 0;
  transition: opacity 0.6s 0.2s;
}

.site-content.visible {
  opacity: 1;
}

/* ============================================================
   MESSAGE CARD
   ============================================================ */
.message-section {
  background: var(--cream);
}

.card {
  background: #fff;
  border-radius: 24px;
  padding: clamp(2.5rem, 6vw, 4rem);
  box-shadow:
    0 1px 3px hsla(40, 20%, 50%, 0.06),
    0 12px 50px hsla(40, 20%, 50%, 0.08);
  border: 1px solid hsla(40, 30%, 85%, 0.5);
}

.card-greeting {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 400;
  font-style: italic;
  color: var(--rose-dark);
  margin-bottom: 1.5rem;
}

.card-body {
  font-size: clamp(0.95rem, 2.2vw, 1.08rem);
  color: var(--text);
  margin-bottom: 1.25rem;
  line-height: 1.85;
}

.card-sign {
  margin-top: 2rem;
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  font-weight: 500;
  color: var(--rose-dark);
  line-height: 1.6;
}

.card-name {
  font-style: italic;
  font-weight: 400;
}

/* ============================================================
   REASONS GRID
   ============================================================ */
.reasons-section {
  background: linear-gradient(180deg, var(--cream) 0%, var(--warm-white) 100%);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 300;
  text-align: center;
  color: var(--rose-dark);
  margin-bottom: 3rem;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.reason-card {
  background: #fff;
  border-radius: 20px;
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1px solid hsla(40, 30%, 88%, 0.6);
  box-shadow: 0 4px 20px hsla(40, 20%, 50%, 0.05);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.35s;
}
.reason-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px hsla(40, 25%, 55%, 0.12);
}

.reason-icon {
  font-size: 2.2rem;
  display: block;
  margin-bottom: 0.75rem;
}

.reason-card p {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.6;
}

/* ============================================================
   GIFT REVEAL
   ============================================================ */
.gift-section {
  background: linear-gradient(180deg, var(--cream) 0%, var(--warm-white) 100%);
  text-align: center;
  overflow: visible;
  padding-bottom: 6rem;
}

.gift-subtitle {
  font-family: var(--font-sans);
  font-size: clamp(0.9rem, 2vw, 1.05rem);
  color: var(--text-light);
  margin-top: -1.5rem;
  margin-bottom: 3rem;
  animation: subtlePulse 2.5s ease-in-out infinite;
}

@keyframes subtlePulse {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

.gift-subtitle.hidden {
  animation: none;
  opacity: 0;
  transition: opacity 0.4s;
}

/* ---------- Confetti ---------- */
#confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10000;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  width: 10px;
  height: 10px;
  opacity: 0;
  will-change: transform;
  animation: confettiFall linear forwards;
}

@keyframes confettiFall {
  0% {
    opacity: 1;
    transform: translate(0, 0) rotate(0deg) scale(1);
  }
  15% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(var(--cx), var(--cy)) rotate(var(--cr)) scale(0.3);
  }
}

/* ---------- Gift Box Wrapper ---------- */
.gift-box-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
  perspective: 800px;
  margin-bottom: 2rem;
  transition: opacity 0.6s, transform 0.6s;
}

.gift-box-wrapper.opened {
  opacity: 0;
  transform: scale(0.5) translateY(-60px);
  pointer-events: none;
  position: absolute;
  left: 50%;
  margin-left: -160px;
}

/* ---------- The 3D Gift Box ---------- */
.gift-box {
  --box-w: 180px;
  --box-h: 140px;
  --box-d: 140px;
  --lid-h: 36px;
  --wrap-color: hsl(45, 80%, 68%);
  --wrap-color-alt: hsl(42, 75%, 62%);
  --wrap-color-dark: hsl(40, 70%, 52%);
  --ribbon-color: hsl(28, 65%, 40%);
  --ribbon-color-light: hsl(32, 70%, 52%);
  --ribbon-sheen: hsl(35, 80%, 65%);

  position: relative;
  width: var(--box-w);
  height: calc(var(--box-h) + var(--lid-h));
  transform-style: preserve-3d;
  transform: rotateX(-12deg) rotateY(-22deg);
  cursor: pointer;
  transition: transform 0.3s;
  animation: boxIdle 4s ease-in-out infinite;
}

@keyframes boxIdle {
  0%, 100% { transform: rotateX(-12deg) rotateY(-22deg) translateY(0); }
  50%      { transform: rotateX(-12deg) rotateY(-22deg) translateY(-6px); }
}

.gift-box:hover {
  animation-play-state: paused;
  transform: rotateX(-12deg) rotateY(-22deg) scale(1.06) translateY(-4px);
}

.gift-box.shaking {
  animation: giftShake 0.5s ease-in-out;
}

@keyframes giftShake {
  0%, 100% { transform: rotateX(-12deg) rotateY(-22deg) rotate(0deg); }
  15%      { transform: rotateX(-12deg) rotateY(-22deg) rotate(-4deg) translateX(-4px); }
  30%      { transform: rotateX(-12deg) rotateY(-22deg) rotate(4deg) translateX(4px); }
  45%      { transform: rotateX(-12deg) rotateY(-22deg) rotate(-3deg) translateX(-3px); }
  60%      { transform: rotateX(-12deg) rotateY(-22deg) rotate(3deg) translateX(3px); }
  75%      { transform: rotateX(-12deg) rotateY(-22deg) rotate(-1deg) translateX(-1px); }
}

/* ---------- Sparkles ---------- */
.sparkle {
  position: absolute;
  font-size: 14px;
  color: hsl(45, 90%, 75%);
  z-index: 20;
  pointer-events: none;
  text-shadow: 0 0 8px hsla(45, 90%, 70%, 0.6);
  animation: sparkleFloat 3s ease-in-out infinite;
}

.sparkle-1 { top: -18px; left: -12px; animation-delay: 0s; font-size: 12px; }
.sparkle-2 { top: -10px; right: -16px; animation-delay: 0.8s; font-size: 16px; }
.sparkle-3 { bottom: 20px; left: -20px; animation-delay: 1.5s; font-size: 10px; }
.sparkle-4 { bottom: 40px; right: -14px; animation-delay: 2.2s; font-size: 13px; }

@keyframes sparkleFloat {
  0%, 100% { opacity: 0.3; transform: scale(0.8) translateY(0); }
  50%      { opacity: 1; transform: scale(1.2) translateY(-6px); }
}

/* ---------- Ground Shadow ---------- */
.box-shadow {
  position: absolute;
  bottom: -20px;
  left: 10%;
  width: 80%;
  height: 20px;
  background: radial-gradient(ellipse, hsla(35, 40%, 30%, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  transform: rotateX(90deg) translateZ(-10px);
  filter: blur(6px);
}

/* ---------- Box Base ---------- */
.box-base {
  position: absolute;
  bottom: 0;
  left: 0;
  width: var(--box-w);
  height: var(--box-h);
  transform-style: preserve-3d;
}

.base-face {
  position: absolute;
  background: linear-gradient(135deg, var(--wrap-color) 0%, var(--wrap-color-alt) 100%);
  border: 1px solid hsla(42, 60%, 55%, 0.4);
}

.base-front {
  width: var(--box-w);
  height: var(--box-h);
  transform: translateZ(calc(var(--box-d) / 2));
  overflow: hidden;
}

.base-back {
  width: var(--box-w);
  height: var(--box-h);
  transform: translateZ(calc(var(--box-d) / -2));
  overflow: hidden;
  background: linear-gradient(135deg, var(--wrap-color-alt) 0%, var(--wrap-color-dark) 100%);
}

.base-left {
  width: var(--box-d);
  height: var(--box-h);
  left: calc((var(--box-w) - var(--box-d)) / 2);
  transform: translateX(calc(var(--box-w) / -2)) rotateY(-90deg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--wrap-color-alt) 0%, var(--wrap-color-dark) 100%);
}

.base-right {
  width: var(--box-d);
  height: var(--box-h);
  left: calc((var(--box-w) - var(--box-d)) / 2);
  transform: translateX(calc(var(--box-w) / 2)) rotateY(90deg);
  overflow: hidden;
}

.base-bottom {
  width: var(--box-w);
  height: var(--box-d);
  top: calc((var(--box-h) - var(--box-d)) / 2);
  transform: translateY(calc(var(--box-h) / 2)) rotateX(90deg);
  background: var(--wrap-color-dark);
}

/* Wrapping paper — small golden stars pattern */
.wrap-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, hsla(45, 60%, 85%, 0.45) 1.5px, transparent 1.5px),
    radial-gradient(circle, hsla(45, 60%, 85%, 0.3) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px;
  background-position: 0 0, 12px 12px;
}

/* Metallic shimmer sweep */
.wrap-shimmer {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 30%,
    hsla(45, 80%, 90%, 0.35) 45%,
    hsla(45, 90%, 95%, 0.5) 50%,
    hsla(45, 80%, 90%, 0.35) 55%,
    transparent 70%
  );
  background-size: 250% 100%;
  animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- Ribbon on Base ---------- */
.ribbon-base-h {
  position: absolute;
  width: var(--box-w);
  height: 20px;
  top: calc(50% - 10px);
  left: 0;
  background: linear-gradient(
    180deg,
    var(--ribbon-sheen) 0%,
    var(--ribbon-color-light) 25%,
    var(--ribbon-color) 50%,
    var(--ribbon-color-light) 75%,
    var(--ribbon-sheen) 100%
  );
  z-index: 2;
  transform: translateZ(calc(var(--box-d) / 2 + 1px));
  box-shadow: 0 2px 8px hsla(35, 50%, 30%, 0.25);
}

.ribbon-base-v {
  position: absolute;
  width: 20px;
  height: var(--box-h);
  left: calc(50% - 10px);
  top: 0;
  background: linear-gradient(
    90deg,
    var(--ribbon-sheen) 0%,
    var(--ribbon-color-light) 25%,
    var(--ribbon-color) 50%,
    var(--ribbon-color-light) 75%,
    var(--ribbon-sheen) 100%
  );
  z-index: 2;
  transform: translateZ(calc(var(--box-d) / 2 + 1px));
  box-shadow: 0 2px 8px hsla(35, 50%, 30%, 0.25);
}

/* ---------- Box Lid ---------- */
.box-lid {
  --lid-w: calc(var(--box-w) + 12px);
  --lid-d: calc(var(--box-d) + 8px);

  position: absolute;
  top: 0;
  left: -6px;
  width: var(--lid-w);
  height: var(--lid-h);
  transform-style: preserve-3d;
  transform-origin: bottom center;
  transition: transform 1s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 5;
}

.box-lid.open {
  transform: rotateX(-120deg) translateY(-30px);
}

.lid-face {
  position: absolute;
  background: linear-gradient(135deg, var(--wrap-color) 0%, var(--wrap-color-alt) 100%);
  border: 1px solid hsla(42, 60%, 55%, 0.4);
}

.lid-front {
  width: var(--lid-w);
  height: var(--lid-h);
  transform: translateZ(calc(var(--lid-d) / 2));
}

.lid-back {
  width: var(--lid-w);
  height: var(--lid-h);
  transform: translateZ(calc(var(--lid-d) / -2));
  background: linear-gradient(135deg, var(--wrap-color-alt) 0%, var(--wrap-color-dark) 100%);
}

.lid-left {
  width: var(--lid-d);
  height: var(--lid-h);
  left: calc((var(--lid-w) - var(--lid-d)) / 2);
  transform: translateX(calc(var(--lid-w) / -2)) rotateY(-90deg);
  background: linear-gradient(135deg, var(--wrap-color-alt) 0%, var(--wrap-color-dark) 100%);
}

.lid-right {
  width: var(--lid-d);
  height: var(--lid-h);
  left: calc((var(--lid-w) - var(--lid-d)) / 2);
  transform: translateX(calc(var(--lid-w) / 2)) rotateY(90deg);
}

.lid-top {
  width: var(--lid-w);
  height: var(--lid-d);
  top: calc((var(--lid-h) - var(--lid-d)) / 2);
  transform: translateY(calc(var(--lid-h) / -2)) rotateX(-90deg);
  background: linear-gradient(135deg, var(--wrap-color) 30%, var(--wrap-color-alt) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Ribbon on lid — satin gradient */
.ribbon-lid-h {
  position: absolute;
  width: var(--lid-w);
  height: 20px;
  top: calc(50% - 10px);
  left: 0;
  background: linear-gradient(
    180deg,
    var(--ribbon-sheen) 0%,
    var(--ribbon-color-light) 25%,
    var(--ribbon-color) 50%,
    var(--ribbon-color-light) 75%,
    var(--ribbon-sheen) 100%
  );
  z-index: 2;
  transform: translateZ(calc(var(--lid-d) / 2 + 1px));
}

.ribbon-lid-v {
  position: absolute;
  width: 20px;
  height: var(--lid-h);
  left: calc(50% - 10px);
  top: 0;
  background: linear-gradient(
    90deg,
    var(--ribbon-sheen) 0%,
    var(--ribbon-color-light) 25%,
    var(--ribbon-color) 50%,
    var(--ribbon-color-light) 75%,
    var(--ribbon-sheen) 100%
  );
  z-index: 2;
  transform: translateZ(calc(var(--lid-d) / 2 + 1px));
}

/* ---------- Bow ---------- */
.bow {
  position: relative;
  width: 70px;
  height: 35px;
  z-index: 10;
  filter: drop-shadow(0 2px 4px hsla(30, 50%, 25%, 0.3));
}

.bow-loop {
  position: absolute;
  width: 32px;
  height: 26px;
  border-radius: 50% 50% 0 50%;
  background: linear-gradient(135deg, var(--ribbon-sheen) 0%, var(--ribbon-color-light) 40%, var(--ribbon-color) 100%);
  border: 2px solid var(--ribbon-color);
  top: 0;
}

.bow-loop-left {
  left: 0;
  transform: rotate(-30deg);
}

.bow-loop-right {
  right: 0;
  border-radius: 50% 50% 50% 0;
  transform: rotate(30deg);
  background: linear-gradient(225deg, var(--ribbon-sheen) 0%, var(--ribbon-color-light) 40%, var(--ribbon-color) 100%);
}

.bow-knot {
  position: absolute;
  width: 16px;
  height: 16px;
  background: radial-gradient(circle at 40% 35%, var(--ribbon-sheen), var(--ribbon-color) 70%);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -30%);
  z-index: 2;
  border: 1.5px solid var(--ribbon-color);
}

/* Bow tails — curling ribbon ends */
.bow-tail {
  position: absolute;
  width: 8px;
  height: 28px;
  background: linear-gradient(180deg, var(--ribbon-color) 0%, var(--ribbon-color-light) 50%, var(--ribbon-color) 100%);
  border-radius: 0 0 4px 4px;
  top: 60%;
  z-index: 1;
}

.bow-tail-left {
  left: 12px;
  transform: rotate(12deg) skewX(-8deg);
}

.bow-tail-right {
  right: 12px;
  transform: rotate(-12deg) skewX(8deg);
}

/* ---------- Gift Certificate (hidden) ---------- */
.gift-certificate {
  opacity: 0;
  transform: translateY(60px) scale(0.9);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  max-height: 0;
  overflow: hidden;
}

.gift-certificate.revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
  max-height: 600px;
  overflow: visible;
}

.gift-card {
  background: #fff;
  border-radius: 24px;
  padding: clamp(2.5rem, 6vw, 3.5rem);
  box-shadow:
    0 1px 3px hsla(40, 20%, 50%, 0.06),
    0 16px 60px hsla(40, 20%, 50%, 0.1);
  border: 1px solid hsla(40, 30%, 85%, 0.5);
  position: relative;
  overflow: hidden;
}

.gift-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blush-deep), var(--rose), var(--lavender));
}

.gift-badge {
  display: inline-block;
  padding: 0.35rem 1.2rem;
  border: 1.5px solid var(--rose);
  border-radius: 100px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--rose);
  margin-bottom: 1.5rem;
}

.gift-name {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 400;
  color: var(--rose-dark);
  margin-bottom: 0.4rem;
}

.gift-location {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.gift-divider {
  width: 60px;
  height: 1px;
  background: var(--blush-deep);
  margin: 0 auto 1.5rem;
}

.gift-desc {
  font-size: clamp(0.95rem, 2.2vw, 1.08rem);
  color: var(--text);
  line-height: 1.85;
  max-width: 500px;
  margin: 0 auto 2rem;
}

.gift-when {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: var(--cream);
  border-radius: 14px;
  border: 1px solid hsla(40, 30%, 88%, 0.6);
  margin-bottom: 1.5rem;
}

.gift-when-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--rose);
}

.gift-when-value {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  color: var(--rose-dark);
  font-weight: 500;
}

.gift-from {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--rose);
  margin-top: 0.5rem;
}

/* ============================================================
   BOUQUET
   ============================================================ */
.bouquet-section {
  background: var(--warm-white);
  text-align: center;
}

.bouquet-wrap {
  max-width: 420px;
  margin: 0 auto;
}

.bouquet-img {
  border-radius: 24px;
  box-shadow: 0 20px 60px hsla(40, 20%, 50%, 0.12);
  animation: gentleFloat 7s ease-in-out infinite;
}

.bouquet-caption {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-style: italic;
  color: var(--rose);
  margin-top: 2rem;
}

/* ============================================================
   CLOSING
   ============================================================ */
.closing-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, var(--warm-white) 0%, var(--blush) 60%, var(--lavender) 100%);
  overflow: hidden;
}

.closing-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.closing-text {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 300;
  color: var(--rose-dark);
}

.closing-text em {
  font-style: italic;
  font-weight: 500;
}

.closing-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-light);
  margin-top: 0.25rem;
}

.heart-beat {
  font-size: 3rem;
  margin-top: 1.5rem;
  animation: heartBeat 1.4s ease-in-out infinite;
}

@keyframes heartBeat {
  0%, 100% { transform: scale(1); }
  14%      { transform: scale(1.2); }
  28%      { transform: scale(1); }
  42%      { transform: scale(1.15); }
  56%      { transform: scale(1); }
}

.border-wrap {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  line-height: 0;
  opacity: 0.55;
}

.border-img {
  width: 100%;
  object-fit: cover;
  max-height: 200px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .reasons-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .reason-card {
    padding: 1.5rem 1rem;
  }

  .card {
    padding: 2rem 1.5rem;
    border-radius: 18px;
  }

  .scroll-hint {
    display: none;
  }

  .gift-card {
    padding: 2rem 1.5rem;
  }

  .gift-when {
    flex-direction: column;
    gap: 0.25rem;
  }

  .gift-box {
    --box-w: 140px;
    --box-h: 110px;
    --box-d: 110px;
    --lid-h: 28px;
  }

  .gift-box-wrapper {
    min-height: 260px;
  }
}

@media (max-width: 380px) {
  .reasons-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Prefers reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .fade-up, .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .petal,
  .hero-flower img,
  .bouquet-img,
  .heart-beat,
  .btn-open svg,
  .scroll-dot,
  .gift-subtitle,
  .confetti-piece,
  .gift-box,
  .gift-box.shaking,
  .wrap-shimmer,
  .sparkle,
  .envelope-label,
  .envelope-container,
  .envelope-hint {
    animation: none !important;
  }

  .gift-certificate {
    opacity: 1 !important;
    transform: none !important;
    max-height: none !important;
  }

  .gift-box-wrapper {
    display: none;
  }

  .gift-subtitle {
    display: none;
  }

  /* Skip envelope overlay entirely */
  .envelope-overlay {
    display: none !important;
  }

  .site-content {
    opacity: 1 !important;
  }
}