:root {
  --sky-top: #05070f;
  --sky-bottom: #131b34;
  --ground: #0b0f1a;
  --ground-edge: #1c2440;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--sky-top);
  overflow: hidden;
}

.scene {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(to bottom, var(--sky-top) 0%, var(--sky-bottom) 75%);
  overflow: hidden;
}

.stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 8% 15%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 18% 30%, #ffffff 100%, transparent 100%),
    radial-gradient(1.5px 1.5px at 27% 10%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 36% 42%, #ffffff 100%, transparent 100%),
    radial-gradient(2px 2px at 46% 18%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 55% 8%, #ffffff 100%, transparent 100%),
    radial-gradient(1.5px 1.5px at 64% 33%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 72% 14%, #ffffff 100%, transparent 100%),
    radial-gradient(2px 2px at 81% 25%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 90% 12%, #ffffff 100%, transparent 100%),
    radial-gradient(1.5px 1.5px at 95% 38%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 12% 48%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 60% 50%, #ffffff 100%, transparent 100%),
    radial-gradient(1.5px 1.5px at 40% 6%, #ffffff 100%, transparent 100%),
    radial-gradient(1px 1px at 85% 5%, #ffffff 100%, transparent 100%);
  opacity: 0.8;
}

.ground {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 18vh;
  background: var(--ground);
  border-top: 2px solid var(--ground-edge);
}

.fireworks-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.man {
  position: absolute;
  left: 15%;
  bottom: 18vh;
  transform: translate(-50%, 0);
  width: 56px;
  height: 98px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.man:focus-visible {
  outline: 2px solid #f1c40f;
  outline-offset: 4px;
  border-radius: 4px;
}

.man-svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.4));
}

.man.walk-to-pile {
  transition: transform 1.1s ease-in-out;
  transform: translate(-50%, 0) translateX(var(--walk-dx, 0px));
}

.man.walking .man-leg-left,
.man.walking .man-leg-right {
  transform-box: fill-box;
  transform-origin: center top;
  animation: walk-legs 0.35s ease-in-out infinite alternate;
}

.man.walking .man-leg-right {
  animation-delay: 0.175s;
}

.man.walking .man-arm-left,
.man.walking .man-arm-right {
  transform-box: fill-box;
  transform-origin: center top;
  animation: walk-arms 0.35s ease-in-out infinite alternate;
}

.man.walking .man-arm-right {
  animation-delay: 0.175s;
}

@keyframes walk-legs {
  from { transform: rotate(-16deg); }
  to { transform: rotate(16deg); }
}

@keyframes walk-arms {
  from { transform: rotate(12deg); }
  to { transform: rotate(-12deg); }
}

.pile {
  position: absolute;
  right: 15%;
  bottom: 18vh;
  transform: translate(50%, 0);
  width: 84px;
  height: 70px;
}

.pile-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.man.lighting .man-svg {
  transform-box: fill-box;
  transform-origin: bottom center;
  animation: light-crouch 0.7s ease-in-out;
}

@keyframes light-crouch {
  0% { transform: rotate(0deg); }
  45% { transform: rotate(22deg); }
  75% { transform: rotate(22deg); }
  100% { transform: rotate(0deg); }
}

.rocket {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: rocket-rise 0.9s cubic-bezier(0.2, 0.6, 0.35, 1) forwards;
}

@keyframes rocket-rise {
  from {
    transform: translate(-50%, -50%) translate(0, 0);
    opacity: 1;
  }
  to {
    transform: translate(-50%, -50%) translate(var(--drift), var(--rise));
    opacity: 1;
  }
}

.burst {
  position: absolute;
  width: 0;
  height: 0;
}

.particle {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  left: 0;
  top: 0;
  transform: translate(-50%, -50%);
  animation: particle-burst 0.85s ease-out forwards;
}

@keyframes particle-burst {
  from {
    transform: translate(-50%, -50%) translate(0, 0);
    opacity: 1;
  }
  to {
    transform: translate(-50%, -50%) translate(var(--dx), var(--dy));
    opacity: 0;
  }
}