* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: Arial, sans-serif;
  background: #f5f7fa;
  color: #172033;
}
.login-card {
  width: min(420px, calc(100% - 32px));
  background: white;
  border: 1px solid #dfe4ea;
  border-radius: 14px;
  padding: 32px;
  box-shadow: 0 8px 30px rgba(0,0,0,.07);
}
h1 { margin: 0 0 6px; }
.subtitle { margin: 0 0 24px; color: #667085; }
label { display: block; margin-bottom: 16px; }
label span { display: block; margin-bottom: 6px; font-weight: 600; }
input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid #cfd6df;
  border-radius: 8px;
  font: inherit;
}
button {
  width: 100%;
  padding: 12px;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}
.message { min-height: 20px; color: #b42318; }