*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:'Poppins',sans-serif;
}

body{
  height:100vh;
  overflow:hidden;
  background:#1a0000;
  color:#fff;
}

/* START */
.start{
  position:fixed;
  inset:0;
  display:flex;
  justify-content:center;
  align-items:center;
  background:radial-gradient(circle,#5a1a1a,#120000);
  z-index:10;
}
.start button{
  padding:18px 46px;
  font-size:18px;
  border:none;
  border-radius:50px;
  cursor:pointer;
  background:linear-gradient(135deg,#8b4513,#ffb347);
  color:#fff;
  box-shadow:0 0 40px rgba(255,180,100,.9);
}

/* SCENE */
.scene{
  position:relative;
  width:100%;
  height:100%;
}
.hidden{display:none}

/* BACKGROUND */
.bg{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,#6b2b1a,#2b0f0f,#000);
  animation:bgMove 18s infinite alternate;
}
@keyframes bgMove{
  from{transform:scale(1)}
  to{transform:scale(1.1)}
}
.overlay{
  position:absolute;
  inset:0;
  background:radial-gradient(circle,rgba(255,255,255,.15),rgba(0,0,0,.85));
}

/* HEART */
.heart{
  position:absolute;
  bottom:10%;
  left:50%;
  transform:translateX(-50%);
  font-size:64px;
  animation:pulse 2s infinite;
  z-index:2;
}
@keyframes pulse{
  0%,100%{transform:translateX(-50%) scale(1)}
  40%{transform:translateX(-50%) scale(1.3)}
  70%{transform:translateX(-50%) scale(1.1)}
}

/* PAGES */
.page{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  padding:20px;
  opacity:0;
  transform:scale(1.15);
  transition:2.5s ease;
  z-index:3;
}
.page.show{
  opacity:1;
  transform:scale(1);
}

h1{
  font-size:28px;
  letter-spacing:3px;
  color:#ffddb3;
}
h2{
  font-size:42px;
  margin-top:10px;
  background:linear-gradient(90deg,#fff,#ffb347,#8b4513);
  -webkit-background-clip:text;
  color:transparent;
}
p{
  font-size:18px;
  max-width:90%;
  line-height:1.8;
  color:#f5e6d3;
  text-shadow:0 0 15px rgba(255,200,150,.4);
}

/* CHOCOLATE RAIN */
.choco{
  position:absolute;
  top:-40px;
  font-size:28px;
  animation:fall linear forwards;
  z-index:4;
  filter:drop-shadow(0 0 10px rgba(255,200,150,.6));
}
@keyframes fall{
  to{
    transform:translateY(120vh) rotate(360deg);
    opacity:0;
  }
}

/* 🚀 BIG ROCKET BLAST */
.blast{
  position:absolute;
  left:50%;
  top:55%;
  font-size:42px;
  animation:rocket 3.5s cubic-bezier(.2,.8,.2,1) forwards;
  pointer-events:none;
  filter:drop-shadow(0 0 20px rgba(255,200,150,.9));
}
@keyframes rocket{
  0%{
    transform:translate(-50%,0) scale(0.3);
    opacity:1;
  }
  20%{
    transform:translate(-50%,-260px) scale(0.6);
  }
  100%{
    transform:
      translate(calc(-50% + var(--x)),calc(-320px + var(--y)))
      scale(1.8)
      rotate(720deg);
    opacity:0;
  }
}

/* MOBILE */
@media(max-width:600px){
  h2{font-size:34px}
  p{font-size:16px}
  .heart{font-size:56px}
}