body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(135deg, #0f2027 0%, #2c5364 100%);
  animation: gradientMove 12s ease-in-out infinite alternate;
  overflow-x: hidden;
}
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}
.main-logo {
  width: 220px;
  display: block;
  margin: 36px auto 8px auto;
}
.main-container {
  max-width: 480px;
  margin: 12px auto 0 auto;
  background: rgba(255,255,255,0.10);
  border-radius: 2.5rem;
  box-shadow: 0 10px 48px #1a2a4d44, 0 1.5px 4px #fff1;
  padding: 32px 18px 20px 18px;
  backdrop-filter: blur(12px) saturate(1.4);
  border: 1.5px solid rgba(255,255,255,0.25);
  position: relative;
  overflow: hidden;
}
/* ...rest of the chat styles as in previous messages... */