* {
  box-sizing: border-box;
  font-family: Inter, Arial, sans-serif;
}

body {
  background: linear-gradient(135deg, #020617, #0f172a);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e5e7eb;
}

.container {
  width: 100%;
  max-width: 420px;
  background: #020617;
  padding: 30px;
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

h2 {
  text-align: center;
  margin-bottom: 20px;
}

input {
  width: 100%;
  padding: 12px;
  margin-bottom: 12px;
  border-radius: 10px;
  border: 1px solid #1e293b;
  background: #020617;
  color: #e5e7eb;
}

button {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  background: #2563eb;
  color: white;
  font-size: 15px;
  cursor: pointer;
}

button.secondary {
  background: #16a34a;
}

.hidden {
  display: none;
}

#msg {
  margin-top: 12px;
  text-align: center;
}