* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: linear-gradient(160deg, #0f172a, #1e293b);
  color: #e2e8f0;
}

.login-card {
  width: min(100% - 2rem, 24rem);
  padding: 2rem;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid #334155;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

.subtitle {
  margin: 0 0 1.5rem;
  color: #94a3b8;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
}

input {
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #475569;
  background: #0f172a;
  color: #f8fafc;
}

button {
  width: 100%;
  margin-top: 1rem;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  background: #2563eb;
  color: white;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

.error {
  margin: 0.75rem 0 0;
  color: #f87171;
  font-size: 0.875rem;
}