.gas-config{border:1px solid #ddd;padding:20px;margin:18px 0;border-radius:6px}.gas-config label{display:block;font-weight:600;margin:0 0 12px}.gas-config input[type=file],.gas-config select{display:block;width:100%;margin-top:5px;padding:9px}.gas-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.gas-preview{background:#eee;padding:18px;text-align:center;overflow:hidden}.gas-preview canvas{max-width:100%;height:auto;box-shadow:0 3px 12px #0002}.gas-note{font-size:.85em;color:#555}#gas-price{font-weight:700}@media(max-width:600px){.gas-grid{grid-template-columns:1fr}}
.gas-custom-fields:not([hidden]){display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;grid-column:1/-1}.gas-custom-fields[hidden]{display:none!important}.gas-custom-fields input,.gas-custom-fields select{width:100%}@media(max-width:600px){.gas-custom-fields:not([hidden]){grid-template-columns:1fr}}