* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background: linear-gradient(135deg, #0a0f2c, #0e3a8a);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
}

.container {
  background: rgba(255, 255, 255, 0.06);
  padding: 36px;
  border-radius: 20px;
  width: 100%;
  max-width: 420px;
  text-align: center;
  backdrop-filter: blur(14px);
}

.logo {
  width: 72px;
  height: auto;
  margin-bottom: 18px;
  filter: drop-shadow(0 0 12px rgba(37, 99, 235, 0.6));
  animation: glow 2.5s ease-in-out infinite;
}

@keyframes glow {
  0% {
    filter: drop-shadow(0 0 8px rgba(37, 99, 235, 0.4));
  }
  50% {
    filter: drop-shadow(0 0 18px rgba(37, 99, 235, 0.85));
  }
  100% {
    filter: drop-shadow(0 0 8px rgba(37, 99, 235, 0.4));
  }
}

h1 {
  font-size: 34px;
  font-weight: 600;
}

.tagline {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 18px;
}

.description {
  font-size: 14px;
  line-height: 1.6;
  opacity: 0.9;
  margin-bottom: 26px;
}

input {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  margin-bottom: 14px;
  font-size: 15px;
}

button {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  background: #2563eb;
  color: white;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

#message {
  margin-top: 14px;
  font-size: 14px;
}