:root{font-family:system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:#f5f6f8;color:#1a1a1a}.container{max-width:520px;margin:40px auto;padding:24px;background:#fff;border-radius:12px;box-shadow:0 1px 4px #00000014}h1{font-size:1.25rem;margin-top:0}.field{display:flex;flex-direction:column;gap:4px;margin-bottom:16px}.field label{font-size:.85rem;font-weight:600}.field input,.field select{padding:10px;border:1px solid #ccc;border-radius:8px;font-size:1rem}.field .error{color:#c0392b;font-size:.8rem}button{width:100%;padding:12px;border:0;border-radius:8px;background:#2563eb;color:#fff;font-size:1rem;font-weight:600;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.feedback{padding:12px;border-radius:8px;margin-bottom:16px}.feedback.ok{background:#e6f4ea;color:#1e7e34}.feedback.fail{background:#fdecea;color:#c0392b}.login{text-align:center}.btn-google{display:inline-block;margin-top:1rem;padding:.6rem 1.2rem;border:1px solid #ccc;border-radius:6px;text-decoration:none;font-weight:600;color:#222;background:#fff}.btn-google:hover{background:#f5f5f5}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;font-size:.9rem}.app-header .identity{color:#555}