:root {
  color-scheme: light;
  --bg-top: #fff2a7;
  --bg-mid: #ffb56b;
  --bg-bottom: #ff6f7d;
  --ink: #58221d;
  --ink-soft: rgba(88, 34, 29, 0.76);
  --card: rgba(255, 251, 241, 0.7);
  --card-border: rgba(255, 255, 255, 0.55);
  --shadow: rgba(129, 36, 45, 0.22);
  --white: #fffdf8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Nunito", "Trebuchet MS", sans-serif;
  color: var(--ink);
  min-height: 100svh;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 18%, rgba(255, 255, 255, 0.4), transparent 24%),
    radial-gradient(circle at 82% 12%, rgba(255, 241, 179, 0.65), transparent 20%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 48%, var(--bg-bottom) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 24%),
    radial-gradient(circle at 50% 120%, rgba(183, 36, 60, 0.18), transparent 34%);
}

.sky,
.sparkles {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.sky-a {
  background:
    radial-gradient(circle at 24% 36%, rgba(255, 255, 255, 0.42), transparent 22%),
    radial-gradient(circle at 74% 28%, rgba(255, 255, 255, 0.28), transparent 26%);
  filter: blur(34px);
  animation: drift 16s ease-in-out infinite alternate;
}

.sky-b {
  background:
    radial-gradient(circle at 68% 66%, rgba(255, 228, 173, 0.28), transparent 22%),
    radial-gradient(circle at 18% 72%, rgba(255, 255, 255, 0.22), transparent 18%);
  filter: blur(40px);
  animation: drift 19s ease-in-out infinite alternate-reverse;
}

.sparkle {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.7);
  animation: twinkle var(--twinkle, 4s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
  opacity: 0.75;
}

.back-link {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  left: max(16px, env(safe-area-inset-left));
  z-index: 20;
  text-decoration: none;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.03em;
  padding: 0.8rem 1.1rem;
  border-radius: 999px;
  background: rgba(255, 252, 245, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 30px var(--shadow);
  backdrop-filter: blur(10px);
}

.back-link:focus-visible,
.launch-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.95);
  outline-offset: 3px;
}

.celebration {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: grid;
  align-items: center;
  justify-items: center;
  gap: 1.4rem;
  padding:
    max(88px, calc(env(safe-area-inset-top) + 88px))
    1.2rem
    max(20px, calc(env(safe-area-inset-bottom) + 20px));
}

.hero {
  width: min(100%, 960px);
  text-align: center;
  padding: 0.8rem 1rem 0;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.78rem;
  font-weight: 800;
  color: rgba(88, 34, 29, 0.65);
}

h1 {
  margin: 0.2rem 0 0;
  font-family: "Baloo 2", "Trebuchet MS", sans-serif;
  font-size: clamp(4.6rem, 16vw, 10rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  color: var(--white);
  text-shadow:
    0 4px 0 rgba(173, 68, 56, 0.36),
    0 16px 38px rgba(140, 45, 54, 0.25);
}

.subtitle {
  margin: 0.8rem auto 0;
  max-width: 34rem;
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.5;
  color: var(--ink-soft);
}

.launch-button {
  margin-top: 1.2rem;
  border: 0;
  border-radius: 999px;
  padding: 1rem 1.5rem;
  font: inherit;
  font-weight: 800;
  font-size: 1rem;
  color: var(--white);
  cursor: pointer;
  background:
    linear-gradient(135deg, #ff5f7b 0%, #ff7b54 52%, #ffbf49 100%);
  box-shadow:
    0 16px 30px rgba(154, 48, 52, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.launch-button:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow:
    0 20px 34px rgba(154, 48, 52, 0.26),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.stage {
  position: relative;
  width: min(100%, 1060px);
  min-height: min(58svh, 620px);
  border-radius: 36px;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 248, 229, 0.5), rgba(255, 240, 219, 0.14)),
    rgba(255, 252, 245, 0.2);
  border: 1px solid var(--card-border);
  box-shadow:
    0 28px 70px rgba(145, 42, 51, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
  cursor: pointer;
}

.sunburst,
.balloon-layer,
.floor,
.crowd {
  position: absolute;
  inset: 0;
}

.sunburst {
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 255, 255, 0.55), transparent 0 18%),
    repeating-conic-gradient(
      from -8deg at 50% 48%,
      rgba(255, 255, 255, 0.18) 0 8deg,
      rgba(255, 224, 163, 0.04) 8deg 16deg
    );
  opacity: 0.78;
}

.floor {
  inset: auto 0 0;
  height: 26%;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.16), transparent 32%),
    linear-gradient(180deg, rgba(255, 151, 111, 0), rgba(205, 66, 80, 0.18)),
    linear-gradient(180deg, #ff8a68 0%, #ff6177 100%);
}

.crowd {
  display: flex;
  align-items: flex-end;
  justify-content: space-evenly;
  padding: 0 2vw 4.5%;
  gap: 1vw;
}

.crowd span {
  width: clamp(44px, 7vw, 90px);
  aspect-ratio: 0.72;
  border-radius: 999px 999px 14px 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.38), rgba(255, 255, 255, 0) 24%),
    linear-gradient(180deg, rgba(165, 33, 58, 0.36), rgba(104, 19, 49, 0.66));
  opacity: 0.66;
  transform-origin: center bottom;
  animation: swayCrowd var(--crowd-speed, 4s) ease-in-out infinite;
}

.crowd span:nth-child(1) { --crowd-speed: 4.8s; height: 38%; }
.crowd span:nth-child(2) { --crowd-speed: 3.9s; height: 42%; }
.crowd span:nth-child(3) { --crowd-speed: 4.4s; height: 35%; }
.crowd span:nth-child(4) { --crowd-speed: 3.5s; height: 40%; }
.crowd span:nth-child(5) { --crowd-speed: 4.2s; height: 33%; }
.crowd span:nth-child(6) { --crowd-speed: 5.1s; height: 37%; }

.stage-note {
  position: absolute;
  right: 18px;
  bottom: 16px;
  margin: 0;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 252, 245, 0.64);
  color: rgba(88, 34, 29, 0.72);
  font-size: 0.88rem;
  font-weight: 800;
}

.balloon-burst {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 0;
  height: 0;
}

.balloon {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--size);
  height: calc(var(--size) * 1.18);
  border-radius: 50% 50% 48% 48%;
  background:
    radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.72), transparent 0 22%),
    linear-gradient(180deg, var(--balloon-light), var(--balloon-dark));
  box-shadow:
    inset -10px -14px 18px rgba(0, 0, 0, 0.08),
    0 14px 22px rgba(136, 46, 58, 0.12);
  transform:
    translate(-50%, -50%)
    translate(var(--offset-x), var(--offset-y))
    rotate(var(--spin));
  animation: floatUp var(--duration) cubic-bezier(0.22, 0.72, 0.18, 1) forwards;
}

.balloon::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  width: 16px;
  height: 12px;
  background: var(--balloon-dark);
  clip-path: polygon(50% 100%, 0 0, 100% 0);
  transform: translateX(-50%);
}

.balloon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: calc(100% + 1px);
  width: 2px;
  height: var(--string-length);
  background: rgba(125, 67, 57, 0.6);
  transform: translateX(-50%);
  border-radius: 999px;
  opacity: 0.72;
}

@keyframes floatUp {
  0% {
    opacity: 0;
    transform:
      translate(-50%, -50%)
      translate(var(--offset-x), calc(var(--offset-y) + 16px))
      rotate(var(--spin))
      scale(0.7);
  }

  10% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform:
      translate(-50%, -50%)
      translate(calc(var(--offset-x) + var(--drift-x)), calc(var(--offset-y) - var(--rise)))
      rotate(calc(var(--spin) + var(--twist)))
      scale(1.08);
  }
}

@keyframes swayCrowd {
  0%, 100% {
    transform: rotate(-2deg);
  }

  50% {
    transform: rotate(2deg);
  }
}

@keyframes drift {
  from {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }

  to {
    transform: translate3d(2%, 2%, 0) scale(1.05);
  }
}

@keyframes twinkle {
  0%, 100% {
    opacity: 0.2;
    transform: scale(0.75);
  }

  50% {
    opacity: 0.85;
    transform: scale(1.1);
  }
}

@media (max-width: 720px) {
  .celebration {
    gap: 1rem;
    padding-inline: 0.8rem;
  }

  .hero {
    padding-top: 0.4rem;
  }

  .stage {
    min-height: 52svh;
    border-radius: 28px;
  }

  .stage-note {
    left: 50%;
    right: auto;
    bottom: 12px;
    transform: translateX(-50%);
    text-align: center;
    width: max-content;
    max-width: calc(100% - 24px);
  }

  .back-link {
    font-size: 0.92rem;
    padding: 0.72rem 0.95rem;
  }
}

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