:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#212529;background:#f5f7fa;color-scheme:light}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:100%;max-width:380px;background:#fff;border:1px solid #e3e7ee;border-radius:12px;padding:32px;box-shadow:0 8px 28px #172b4d0d}h1{margin:0;text-align:center;font-size:26px;font-weight:600}.hint{color:#6c757d;text-align:center;margin:12px 0 28px}label{display:block;font-size:14px;margin-bottom:8px}input,button{width:100%;font:inherit;border-radius:6px;padding:12px}input{border:1px solid #ced4da;letter-spacing:6px;font-size:22px}input:focus{outline:3px solid #0d6efd30;border-color:#86b7fe}button{margin-top:20px;background:#0d6efd;color:white;border:0;cursor:pointer}button:hover{background:#0b5ed7}button:disabled{opacity:.65;cursor:wait}#message{color:#b02a37;font-size:14px;min-height:20px;margin:14px 0 0}