@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&display=swap');

/* Rocket launch site styles */
:root{
  --duration: 3500ms;
  --bg-duration: 3500ms;
  --rocket-size: 25vw;
  --asteroid-size: 25vw;
}
html,body{height:100%;}
body{
  margin:0;
  background: white;
  transition: background-color var(--bg-duration) ease-in-out;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
  overflow:hidden;
  color:#000;
}
body.launched{
  background: #000;
  color:#fff;
}

.scene-overlay{
  position:fixed;
  inset:0;
  background: linear-gradient(180deg, #000 0%, #020c23 35%, #071a3d 100%);
  opacity:0;
  transition: opacity 1400ms ease;
  z-index:0;
}

.scene-overlay::before {
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.9) 0 1px, transparent 1.5px),
    radial-gradient(circle at 40% 55%, rgba(255,255,255,0.8) 0 1px, transparent 1.7px),
    radial-gradient(circle at 75% 28%, rgba(255,255,255,0.7) 0 1.2px, transparent 1.8px),
    radial-gradient(circle at 65% 70%, rgba(255,255,255,0.8) 0 1.4px, transparent 2px),
    radial-gradient(circle at 50% 50%, rgba(255,255,255,0.15) 0 1%, transparent 100%);
  background-size: 300px 300px, 260px 260px, 340px 340px, 280px 280px, 100% 100%;
  opacity:0.8;
}

body.show-scene .scene-overlay{
  opacity:1;
}

.sky{
  position:relative;
  width:100vw;
  height:100vh;
  z-index:1;
}
.rocket{
  position:fixed;
  left: 0;
  bottom: 0;
  width: var(--rocket-size);
  height: auto;
  will-change: transform, opacity;
  filter: drop-shadow(0 8px 8px rgba(0,0,0,0.25));
  z-index: 5;
}

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

.rocket-emoji{
  font-size: var(--rocket-size);
  width: var(--rocket-size);
  height: auto;
  display:flex;
  align-items:center;
  justify-content:center;
  line-height:1;
  transform-origin:center center;
}

.welcome{
  position:fixed;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  font-size: max(2.5rem, 4vw);
  color:#fff;
  opacity:0;
  pointer-events:none;
  z-index:20;
  transition: opacity 700ms ease, transform 700ms ease;
  text-align:center;
}

body.show-welcome .welcome{
  opacity:1;
  transform:translate(-50%,-52%);
}

.subwelcome{
  position:fixed;
  left:50%;
  top: calc(50% + 7vh);
  transform:translate(-50%,-50%);
  font-family: 'Fredoka', 'Trebuchet MS', sans-serif;
  font-size: max(1.5rem, 2.4vw);
  color: #fff;
  opacity:0;
  pointer-events:none;
  z-index:20;
  letter-spacing: 0.08em;
  text-shadow: 0 0 18px rgba(255,255,255,0.25);
  text-align:center;
  white-space: nowrap;
  display:inline-block;
  border-right: 2px solid rgba(255,255,255,0.8);
  transition: opacity 500ms ease, transform 500ms ease;
  transition-delay: 700ms;
}

body.show-welcome .subwelcome{
  opacity:1;
  transform:translate(-50%,-52%);
}

.tap-screen{
  position:fixed;
  left:50%;
  bottom: 6vh;
  transform:translateX(-50%);
  font-family: 'Fredoka', 'Trebuchet MS', sans-serif;
  font-size: clamp(1rem, 2vw, 1.8rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  opacity:0;
  pointer-events:none;
  z-index:30;
  transition: opacity 600ms ease;
  transition-delay: 1800ms;
  cursor:pointer;
}

body.show-scene .tap-screen{
  opacity:1;
  pointer-events:auto;
}

body.show-scene {
  cursor: pointer;
}

.flash-overlay{
  position:fixed;
  inset:0;
  background: radial-gradient(circle at center, rgba(255,255,255,1) 0%, rgba(255,255,255,0.95) 18%, rgba(255,255,255,0.8) 30%, rgba(255,255,255,0.45) 48%, rgba(255,255,255,0) 72%);
  opacity:0;
  pointer-events:none;
  z-index:40;
  transition: opacity 180ms ease;
}

body.flash .flash-overlay{
  opacity:1;
}
@keyframes fly {
  0%{ transform: translateX(0) translateY(0); opacity:1 }
  30%{ opacity:1 }
  100%{ transform: translateX(calc(100vw + var(--rocket-size))) translateY(calc(-100vh - var(--rocket-size))); opacity:1 }
}
body.launched .rocket{
  animation: fly var(--duration) linear forwards;
}

.asteroid{
  position:fixed;
  right: calc(100% + 14vw);
  top: 18vh;
  width: var(--asteroid-size);
  height: var(--asteroid-size);
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0.1) 10%, transparent 12%),
    radial-gradient(circle at 35% 35%, #d7d7d7 0%, #a7a7a7 20%, #707070 38%, #3d3d3d 62%, #1f1f1f 100%);
  box-shadow:
    inset -16px -16px 18px rgba(0,0,0,0.55),
    inset 8px 8px 14px rgba(255,255,255,0.18),
    0 0 30px rgba(255,255,255,0.15);
  opacity:0;
  z-index:4;
  overflow:hidden;
}

.asteroid::before,
.asteroid::after {
  content:"";
  position:absolute;
  border-radius:50%;
  background: rgba(15,15,15,0.28);
  box-shadow: inset 4px 4px 10px rgba(0,0,0,0.35);
}

.asteroid::before {
  width: 28%;
  height: 28%;
  left: 18%;
  top: 20%;
}

.asteroid::after {
  width: 32%;
  height: 32%;
  right: 18%;
  bottom: 18%;
}

body.launched .asteroid{
  animation: asteroidFly 3100ms ease-in-out forwards;
  animation-delay: 1800ms;
}

@keyframes asteroidFly {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) scale(0.8);
  }
  12% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: translate3d(140vw, 28vh, 0) scale(1.05);
  }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  body.launched .rocket{ animation: none; transform: translateX(100vw) translateY(-100vh) }
  body.launched .asteroid{ animation: none; opacity:1; transform: translateX(120vw) translateY(20vh) }
}