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

body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #f1f5f9;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
  padding: 40px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.4);
  max-width: 500px;
  width: 100%;
}

.logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, #06b6d4, #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: bold;
  color: #000;
}

h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.lead {
  font-size: 16px;
  color: #cbd5e1;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  background: linear-gradient(90deg, #06b6d4, #7c3aed);
  color: #fff;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: bold;
  transition: opacity 0.2s ease;
}

.btn:hover {
  opacity: 0.9;
}