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

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #f3f4f6;
}

.login-card {
  width: 100%;
  max-width: 360px;
  padding: 24px;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
}

h1 {
  margin: 0 0 18px 0;
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

input {
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 10px;
}

button {
  margin-top: 8px;
  border: none;
  border-radius: 8px;
  padding: 10px;
  background: #2563eb;
  color: #ffffff;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

#message {
  margin-top: 14px;
  min-height: 20px;
  text-align: center;
  font-weight: 600;
}