:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#f5f5f5;background:#181818}*{box-sizing:border-box}body{margin:0}.app{min-height:100vh;padding:24px}h1{margin:0 0 12px;font-size:28px}p{margin:0 0 8px}.auth-card{margin:20px 0;padding:16px;border:1px solid #333;border-radius:12px;background:#222}.auth-card h2{margin:0 0 12px;font-size:18px}.auth-error{color:#ff8a8a}.btn{margin-top:12px;padding:8px 14px;border:0;border-radius:8px;background:#3b82f6;color:#fff;cursor:pointer}.btn:disabled{opacity:.6;cursor:not-allowed}