* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: url('https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=1600&q=80')
    no-repeat center center fixed;

  background-size: cover;
  color: #333;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.container {
  max-width: 650px;
  width: calc(100% - 30px);
  padding: 3rem;
  background: linear-gradient(135deg, rgba(240, 250, 255, 0.95), rgba(255, 255, 255, 0.9));
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15), inset 0 0 20px rgba(255, 255, 255, 0.3);
  animation: fadeIn 1.5s ease-in;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(200, 220, 255, 0.4);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: #1a2a3a;
}

.subtitle {
  font-size: 1.2rem;
  color: #3a4a5a;
  margin-bottom: 1rem;
  line-height: 1.6;
}

a {
  color: #0077cc;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border-bottom: 1px dotted #0077cc;
}

a:hover {
  color: #005299;
  border-bottom: 1px solid #005299;
  text-shadow: 0 0 3px rgba(0, 119, 204, 0.3);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.01);
  }
}