* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f5f7;
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.login-card {
  background: white;
  padding: 2rem 1.75rem;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  width: min(360px, 92vw);
}
.login-card h1 {
  margin: 0 0 0.25rem 0;
  font-size: 1.4rem;
}
.subtitle {
  margin: 0 0 1.5rem 0;
  color: #666;
  font-size: 0.9rem;
}
form { display: flex; flex-direction: column; gap: 1rem; }
label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.85rem; }
input {
  padding: 0.7rem 0.85rem;
  border: 1px solid #d0d4da;
  border-radius: 8px;
  font-size: 1rem;
  min-height: 44px;
}
input:focus { outline: 2px solid #4b7cff; border-color: #4b7cff; }
button {
  padding: 0.8rem;
  background: #1d4ed8;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  min-height: 48px;
  cursor: pointer;
}
button:hover { background: #1e40af; }
.error { color: #b91c1c; font-size: 0.85rem; margin: -0.3rem 0 0 0; }