*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f0f2f5;color:#1a1a2e;min-height:100vh}button{cursor:pointer;border:none;border-radius:6px;padding:8px 16px;font-size:.9rem;font-weight:600;transition:opacity .15s}button:hover{opacity:.85}button:disabled{opacity:.5;cursor:not-allowed}input{width:100%;padding:10px 12px;border:1px solid #d0d0d0;border-radius:6px;font-size:.95rem;outline:none}input:focus{border-color:#4f6ef7;box-shadow:0 0 0 3px #4f6ef726}.card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 2px 12px #00000012}.btn-primary{background:#4f6ef7;color:#fff}.btn-danger{background:#e74c3c;color:#fff}.btn-success{background:#27ae60;color:#fff}.btn-ghost{background:transparent;color:#4f6ef7;border:1px solid #4f6ef7}.error{color:#e74c3c;font-size:.85rem;margin-top:6px}