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

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

.card {
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(15px);
  padding: 40px;
  width: 380px;
  border-radius: 20px;
  border: 1px solid #334155;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.title {
  text-align: center;
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 10px;
}

.subtitle {
  text-align: center;
  font-size: 16px;
  color: #94a3b8;
  margin-bottom: 30px;
}

.input {
  width: 100%;
  padding: 14px;
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid #475569;
  background: #1e293b;
  color: white;
  font-size: 14px;
  transition: 0.3s;
}

.input:focus {
  outline: none;
  border-color: #3b82f6;
}

.button {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: #2563eb;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.button:hover {
  background: #1d4ed8;
}

.message {
  margin-top: 15px;
  text-align: center;
  font-size: 14px;
}

.success {
  color: #22c55e;
}

.error {
  color: #ef4444;
}