* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

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

.container {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card {
  width: 320px;
  padding: 30px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  text-align: center;
  color: white;
}

h2 {
  margin-bottom: 8px;
  font-size: 22px;
}

.subtitle {
  font-size: 13px;
  opacity: 0.7;
  margin-bottom: 20px;
}

input {
  width: 100%;
  padding: 12px;
  margin: 8px 0;
  border: none;
  border-radius: 10px;
  outline: none;
  background: rgba(255, 255, 255, 0.12);
  color: white;
}

input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

button {
  width: 100%;
  padding: 12px;
  margin-top: 12px;
  border: none;
  border-radius: 10px;
  background: #3b82f6;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #2563eb;
  transform: scale(1.03);
}