body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; margin: 0; background: #EEEEEE; color: #CCCCCC; }
.login { display: grid; place-items: center; min-height: 100vh; }
.card { max-width: 800px; margin: 2rem auto; padding: 1.5rem; border: 1px solid #aca8a8; border-radius: 0.5rem; background: #fafafa; color: #0f172a; text-align: center; }
.login-button { display: inline-block; background: #2c7be5; color: #fff; padding: .6rem 1rem; border-radius: 10px; text-decoration: none; font-weight: 600; }
.error { color: #c00; }