/*
 * Envelope intro
 * Self-contained so it stays intact when the static Tailwind bundle is not rebuilt.
 */
#envelope-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  overflow-x: hidden;
  overflow-y: auto;
  background:
    radial-gradient(circle at 50% 42%, rgba(89, 116, 102, 0.26), transparent 42%),
    rgba(20, 39, 32, 0.97);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  isolation: isolate;
  overscroll-behavior: contain;
  user-select: none;
  -webkit-user-select: none;
}

#envelope-overlay[aria-hidden="true"] {
  pointer-events: none;
}

#envelope-skip-btn {
  position: absolute;
  top: max(1rem, env(safe-area-inset-top));
  right: max(1rem, env(safe-area-inset-right));
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.75);
  background: rgba(255, 255, 255, 0.09);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

#envelope-skip-btn:hover,
#envelope-skip-btn:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.17);
  border-color: rgba(255, 255, 255, 0.35);
  outline: none;
}

#envelope-tagline {
  width: min(100%, 34rem);
  margin: 0 0 clamp(1.25rem, 4vh, 2rem);
  text-align: center;
}

#envelope-tagline > :first-child {
  color: #d8b875;
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 5vw, 2rem);
  font-style: italic;
  letter-spacing: 0.025em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

#envelope-tagline > :last-child {
  margin-top: 0.5rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(0.68rem, 2.5vw, 0.85rem);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

#envelope-scene-wrapper {
  --envelope-letter-rise: -8.75rem;
  width: min(90vw, 620px);
  max-width: 620px;
  aspect-ratio: 4 / 3;
  flex: 0 0 auto;
  perspective: 1400px;
}

#envelope-scene {
  position: relative;
  width: 100%;
  height: 100%;
  cursor: pointer;
  transform-style: preserve-3d;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

#envelope-overlay.envelope-design-preview #envelope-scene,
#envelope-overlay.envelope-design-preview #wax-seal-btn {
  cursor: default;
}

#envelope-letter {
  position: absolute;
  inset: 0.75rem;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 1.5rem);
  overflow: hidden;
  border: 1px solid rgba(197, 160, 89, 0.42);
  border-radius: 0.75rem;
  background: #faf8f5;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.28);
  text-align: center;
  transform-origin: bottom center;
  pointer-events: none;
  will-change: transform;
}

#envelope-letter > div {
  display: flex;
  width: 100%;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border: 1px solid rgba(197, 160, 89, 0.3);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.64);
}

#envelope-letter h2 {
  margin-top: 0.25rem;
  font-size: clamp(1.75rem, 6vw, 2.65rem);
  line-height: 1.1;
}

#envelope-letter p:last-child {
  margin-top: 0.5rem;
}

#envelope-scene > .envelope-body {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  border: 1px solid rgba(197, 160, 89, 0.3);
  border-radius: 1rem;
  background: linear-gradient(180deg, #e7dac9, #f5ece0);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.38);
}

#envelope-scene > .envelope-body > div {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #e7dac9, #f5ece0);
}

#envelope-scene > .z-20 {
  position: absolute;
  inset: 0;
  z-index: 20;
  overflow: hidden;
  border-radius: 1rem;
  pointer-events: none;
}

#envelope-scene .clip-path-bottom-flap {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 60%;
  border-top: 1px solid rgba(197, 160, 89, 0.2);
  background: #efe6d9;
  clip-path: polygon(0 100%, 100% 100%, 50% 20%);
  filter: drop-shadow(0 -3px 4px rgba(69, 43, 23, 0.08));
}

#envelope-scene .clip-path-left-flap,
#envelope-scene .clip-path-right-flap {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60%;
}

#envelope-scene .clip-path-left-flap {
  left: 0;
  background: #e8ddcf;
  clip-path: polygon(0 0, 92% 50%, 0 100%);
}

#envelope-scene .clip-path-right-flap {
  right: 0;
  background: #e5dad0;
  clip-path: polygon(100% 0, 8% 50%, 100% 100%);
}

#envelope-top-flap {
  position: absolute;
  top: 2%;
  right: 0;
  left: 0;
  z-index: 30;
  height: 60%;
  transform: rotateX(0deg);
  transform-origin: top center;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  pointer-events: none;
  will-change: transform;
}

#envelope-top-flap > div {
  width: 100%;
  height: 100%;
  border-bottom: 1px solid rgba(197, 160, 89, 0.3);
  background: linear-gradient(165deg, #eee3d5 0%, #dfd0bf 100%);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  filter: drop-shadow(0 7px 6px rgba(69, 43, 23, 0.14));
}

#wax-seal-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 40;
  display: block;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  transform: translate(-50%, -50%);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

#wax-seal-btn:focus-visible {
  outline: 3px solid rgba(230, 197, 148, 0.95);
  outline-offset: 5px;
}

#wax-seal-btn .wax-seal {
  position: relative;
  display: flex;
  width: clamp(5.75rem, 18vw, 8.25rem);
  height: clamp(5.75rem, 18vw, 8.25rem);
  align-items: center;
  justify-content: center;
  padding: clamp(0.48rem, 1.5vw, 0.75rem);
  overflow: hidden;
  border: 1px solid rgba(104, 62, 12, 0.72);
  border-radius: 48% 52% 46% 54% / 53% 47% 55% 45%;
  background:
    radial-gradient(circle at 30% 23%, rgba(255, 234, 164, 0.75) 0 5%, transparent 22%),
    radial-gradient(circle at 74% 76%, rgba(114, 65, 10, 0.34), transparent 45%),
    linear-gradient(145deg, #e3bd68 0%, #c28a32 48%, #9b641e 100%);
  box-shadow:
    0 17px 32px rgba(0, 0, 0, 0.5),
    inset 0 3px 4px rgba(255, 241, 188, 0.62),
    inset 0 -6px 9px rgba(96, 53, 8, 0.42),
    0 0 0 2px rgba(224, 175, 79, 0.28);
  transition: filter 180ms ease;
  will-change: transform, opacity;
}

#wax-seal-btn .wax-seal::before {
  content: "";
  position: absolute;
  inset: 0.23rem;
  border: 1px solid rgba(255, 226, 148, 0.4);
  border-radius: 52% 48% 54% 46% / 47% 53% 45% 55%;
  box-shadow: inset 0 0 8px rgba(91, 50, 7, 0.18);
  pointer-events: none;
}

#wax-seal-btn .wax-seal::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 61%, rgba(91, 50, 7, 0.17) 0 1.2%, transparent 1.8%),
    radial-gradient(circle at 68% 18%, rgba(255, 239, 184, 0.3) 0 1.1%, transparent 1.8%),
    radial-gradient(circle at 82% 54%, rgba(91, 50, 7, 0.13) 0 1.3%, transparent 2%);
  pointer-events: none;
}

#wax-seal-btn:hover .wax-seal {
  filter: brightness(1.055) saturate(1.04);
}

#wax-seal-btn .wax-seal-inner {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(103, 61, 12, 0.7);
  border-radius: 50%;
  background: radial-gradient(circle at 37% 30%, rgba(243, 204, 116, 0.34), transparent 44%);
  box-shadow:
    inset 0 0 0 2px rgba(255, 226, 151, 0.3),
    inset 0 2px 5px rgba(255, 236, 176, 0.22),
    inset 0 -3px 6px rgba(91, 51, 8, 0.24),
    0 1px 1px rgba(255, 236, 176, 0.38);
}

#wax-seal-btn .seal-monogram {
  position: relative;
  display: block;
  width: 78%;
  height: 76%;
  color: #70420d;
  font-family: "Great Vibes", "Snell Roundhand", "Segoe Script", "Apple Chancery", cursive;
  font-variant-ligatures: contextual;
  filter: drop-shadow(-1px -1px 0 rgba(255, 226, 148, 0.52))
          drop-shadow(1px 1px 0 rgba(83, 45, 5, 0.38));
}

#wax-seal-btn .seal-initial {
  position: absolute;
  font-size: clamp(2.65rem, 7.8vw, 4.1rem);
  font-weight: 400;
  line-height: 0.72;
}

#wax-seal-btn .seal-initial-p {
  top: -0.02em;
  left: -0.03em;
  transform: rotate(-4deg);
}

#wax-seal-btn .seal-initial-l {
  right: -0.02em;
  bottom: -0.13em;
  transform: rotate(3deg);
}

#wax-seal-btn .seal-ampersand {
  position: absolute;
  top: 50%;
  left: 50%;
  font-family: "Great Vibes", "Snell Roundhand", "Segoe Script", cursive;
  font-size: clamp(1.35rem, 3.6vw, 1.9rem);
  font-style: normal;
  font-weight: 400;
  line-height: 1;
  transform: translate(-50%, -48%) rotate(-8deg);
}

#envelope-overlay.envelope-css-opening #wax-seal-btn .wax-seal {
  animation: envelopeSealBreak 420ms ease-in-out forwards;
}

#envelope-overlay.envelope-css-opening #envelope-tagline {
  animation: envelopeCopyOut 300ms ease forwards;
}

#envelope-overlay.envelope-css-opening #envelope-top-flap {
  animation: envelopeFlapOpen 650ms 280ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

#envelope-overlay.envelope-css-opening #envelope-letter {
  animation: envelopeLetterRise 700ms 800ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

#envelope-overlay.envelope-css-opening {
  animation: envelopeOverlayOut 500ms 1.65s ease forwards;
}

@keyframes envelopeSealBreak {
  0% { opacity: 1; transform: scale(1) rotate(0); }
  65% { opacity: 1; transform: scale(1.14) rotate(8deg); }
  100% { opacity: 0; transform: scale(0) rotate(-7deg); }
}

@keyframes envelopeCopyOut {
  to { opacity: 0; transform: translateY(-12px); }
}

@keyframes envelopeFlapOpen {
  to { z-index: 5; transform: rotateX(180deg); }
}

@keyframes envelopeLetterRise {
  to { transform: translateY(var(--envelope-letter-rise)) scale(1.035); }
}

@keyframes envelopeOverlayOut {
  to { opacity: 0; }
}

@media (max-width: 640px) {
  #envelope-overlay {
    justify-content: center;
    padding-top: max(4.5rem, calc(env(safe-area-inset-top) + 3.5rem));
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
  }

  #envelope-scene-wrapper {
    --envelope-letter-rise: -6.4rem;
    width: min(94vw, 440px);
  }

  #envelope-letter {
    inset: 0.55rem;
    padding: 0.75rem;
  }

  #envelope-letter > div {
    padding: 0.65rem;
  }
}

@media (max-height: 620px) and (orientation: landscape) {
  #envelope-overlay {
    justify-content: flex-start;
    padding-top: 3.75rem;
  }

  #envelope-tagline {
    margin-bottom: 0.75rem;
  }

  #envelope-tagline > :first-child {
    font-size: 1.2rem;
  }

  #envelope-scene-wrapper {
    --envelope-letter-rise: -5.5rem;
    width: min(68vw, 360px);
  }
}

@media (prefers-reduced-motion: reduce) {
#envelope-overlay.envelope-css-opening,
  #envelope-overlay.envelope-css-opening #wax-seal-btn .wax-seal,
  #envelope-overlay.envelope-css-opening #envelope-tagline,
#envelope-overlay.envelope-css-opening #envelope-top-flap,
  #envelope-overlay.envelope-css-opening #envelope-letter {
    animation-duration: 1ms;
    animation-delay: 0ms;
  }
}