body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: #0b0c2a;
  color: #fff;
  text-align: center;
  overflow-x: hidden;
}

.background-animation {
  position: fixed;
  width: 200%;
  height: 200%;
  background: radial-gradient(#ffd70033, transparent 60%) center/20% 20%;
  animation: float 30s linear infinite;
  z-index: 0;
}

@keyframes float {
  from { transform: translate(0, 0); }
  to { transform: translate(-50%, -50%); }
}

.container {
  position: relative;
  z-index: 1;
  padding: 30px 20px;
  max-width: 800px;
  margin: auto;
}

.highlight {
  color: #FFD700;
}

.tagline {
  font-style: italic;
  margin-bottom: 30px;
}

.speakers {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.card {
  border-radius: 12px;
  padding: 20px;
  width: 300px;
  box-shadow: 0 0 10px #00000066;
}

.card.dark {
  background-color: #111;
  color: #fff;
}

.card.light {
  background-color: #f9f9f9;
  color: #222;
}

.logo {
  width: 60px;
  height: 60px;
  margin: 10px 0;
}

.highlights {
  list-style: none;
  padding: 0;
  margin: 30px 0;
  font-size: 1.1em;
}

.countdown {
  font-size: 1.5em;
  margin: 20px 0;
  color: #FFD700;
}

.rsvp-form {
  background: #fff;
  color: #000;
  padding: 20px;
  border-radius: 10px;
  max-width: 400px;
  margin: 20px auto;
  box-shadow: 0 0 10px #00000066;
}

.rsvp-form input,
.rsvp-form textarea {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.rsvp-form button {
  background: #FFD700;
  border: none;
  padding: 10px 20px;
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
}

.event-details {
  margin: 30px 0;
  line-height: 1.6em;
  font-size: 1.1em;
}

@media (max-width: 600px) {
  .speakers {
    flex-direction: column;
    align-items: center;
  }
}
.banner {
  background: linear-gradient(90deg, #00d1ff, #ff00c8, #00ffae);
  background-size: 400% 400%;
  color: #fff;
  padding: 15px 10px;
  font-size: 1.2em;
  font-weight: bold;
  animation: bannerMove 8s ease infinite;
  border-radius: 8px;
  margin: 30px auto;
  max-width: 700px;
  text-shadow: 1px 1px 3px #000;
}

@keyframes bannerMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.lucky-banner {
  background: linear-gradient(270deg, #00ffc8, #ff4dde, #00aaff, #ffd700);
  background-size: 800% 800%;
  animation: glowingBanner 10s ease infinite;
  color: #fff;
  padding: 18px;
  margin: 30px auto;
  max-width: 750px;
  font-size: 1.4em;
  font-weight: bold;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
  text-shadow: 1px 1px 4px #000;
}

@keyframes glowingBanner {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.lucky-banner .usdt {
  color: #00ffea;
  text-shadow: 1px 1px 5px #000, 0 0 10px #00ffea;
  animation: pulseUSDT 1.8s infinite ease-in-out;
}

@keyframes pulseUSDT {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}