.gas-estimate-empty{padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:8px;font-size:14px;color:var(--text-muted)}.gas-estimate-card{display:grid;gap:16px;padding:16px;border:1px solid var(--border);border-radius:8px;background:var(--surface)}.gas-estimate-error{color:var(--danger);font-family:monospace;font-size:13px}.gas-estimate-knob-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:12px}.gas-estimate-knob-label{font-family:monospace;font-size:14px}.gas-estimate-knob-input{width:80px;padding:6px 8px;border:1px solid var(--border);border-radius:4px;font-family:monospace;font-size:14px}.gas-estimate-result-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:12px;padding:10px 0;border-top:1px solid var(--border)}.gas-estimate-result-label{font-family:monospace;font-size:14px;color:var(--text)}.gas-estimate-result-value{font-family:monospace;font-size:13px;color:var(--text-muted)}