body {
  margin:0;
  font-family: 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top,#0b0f1a,#04070f);
  color:#fff;
  display:flex;
  justify-content:center;
  align-items:center;
  height:100vh;
  overflow:hidden;
}

.page {text-align:center; width:90%; max-width:600px; position:relative;}

h1,h2 {margin-bottom:20px; text-shadow:0 0 5px #0ff, 0 0 15px #0ff;}

.neon-text {
  color:#0ff;
  text-shadow: 0 0 5px #0ff, 0 0 10px #0ff, 0 0 20px #0ff, 0 0 40px #0ff;
}

.banner-container img {width:100%; border-radius:12px; margin-bottom:20px; box-shadow:0 0 20px #0ff;}

.banner-animate {opacity:0; animation: fadeSlide 1s forwards;}
@keyframes fadeSlide {from{opacity:0;transform:translateY(-30px);}to{opacity:1;transform:translateY(0);}}

/* --- Premium Round Button --- */
.round-btn {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: none;
  font-size: 24px;
  font-weight: bold;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #fff;
  background: radial-gradient(circle at 30% 30%, #00ffe7, #008cff);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 0 40px rgba(0,255,200,0.6),
              0 0 80px rgba(0,140,255,0.4),
              inset 0 0 25px rgba(255,255,255,0.2);
  animation: pulseGlow 3s infinite ease-in-out;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Breathing Glow */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 30px rgba(0,255,200,0.7),
                0 0 70px rgba(0,140,255,0.5),
                inset 0 0 20px rgba(255,255,255,0.2);
  }
  50% {
    box-shadow: 0 0 60px rgba(0,255,200,0.9),
                0 0 120px rgba(0,140,255,0.7),
                inset 0 0 30px rgba(255,255,255,0.4);
  }
}

/* Hover neon burst */
.round-btn:hover {
  transform: scale(1.15);
  box-shadow: 0 0 70px #00ffe7,
              0 0 150px #008cff,
              inset 0 0 40px rgba(255,255,255,0.6);
}

/* Ripple aura */
.round-btn::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300%;
  height: 300%;
  background: radial-gradient(circle, rgba(0,255,255,0.5) 0%, transparent 80%);
  transform: translate(-50%, -50%) scale(0);
  border-radius: 50%;
  opacity: 0;
  animation: ripple 3s infinite;
}

@keyframes ripple {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 0.6; }
  70% { transform: translate(-50%, -50%) scale(1); opacity: 0; }
  100% { opacity: 0; }
}

/* Click bounce */
.round-btn:active {
  transform: scale(0.95);
}

/* Reset button smaller */
.reset-btn {
  width: 120px;
  height: 60px;
  font-size: 18px;
  border-radius: 30px;
  background: linear-gradient(135deg,#ff4d4d,#ffb84d);
  box-shadow:0 0 15px #ff4d4d,0 0 30px #ffb84d;
}

#confetti {position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:9999;}

@media(max-width:600px){
  .round-btn {width:180px; height:180px; font-size:18px;}
  .reset-btn {width:100px; height:50px; font-size:16px;}
}
/**/
/* Curtain container */
.curtain-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: auto;
  overflow: hidden;
}

/* The banner image */
.banner-content img {
  width: 100%;
  border-radius: 12px;
  opacity: 0;
  transform: scale(0.9);
  animation: bannerZoom 1.8s ease forwards 1s; /* reveal after curtain */
}

/* Curtain panels */
.curtain {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  background: #0b0f1a;
  z-index: 10;
}

.curtain.left {
  left: 0;
  animation: slideLeft 1.5s ease forwards;
}

.curtain.right {
  right: 0;
  animation: slideRight 1.5s ease forwards;
}

/* Curtain animations */
@keyframes slideLeft {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}
@keyframes slideRight {
  0% { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

/* Banner zoom effect */
@keyframes bannerZoom {
  0% { opacity: 0; transform: scale(0.9); filter: blur(10px); }
  100% { opacity: 1; transform: scale(1); filter: blur(0); }
}