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

body {
  height: 100vh;
  background: linear-gradient(to top right, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3)), 
              url('cs2-bg.jpg') no-repeat center center fixed;
  background-size: cover;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.overlay {
  background: rgba(0, 0, 0, 0.5);
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
}

h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  color: #00ffcc;
}

p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}

.btn {
  text-decoration: none;
  background: #00ffcc;
  color: #000;
  padding: 15px 30px;
  border-radius: 10px;
  font-weight: bold;
  transition: all 0.3s ease;
}

.btn:hover {
  background: #00cc99;
}
.demo-warning {
  background: rgba(255, 69, 0, 0.9);
  color: #fff;
  text-align: center;
  padding: 12px 20px;
  border-radius: 8px;
  margin-top: 30px;
  font-size: 15px;
  font-weight: 500;
  display: inline-block;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  animation: pulse 2s infinite;
}
/* Markazga joylashtirish uchun container elementga stil */
body {
  flex-direction: column; /* ustun bo‘yicha joylashsin */
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.03); opacity: 0.9; }
  100% { transform: scale(1); opacity: 1; }
}