*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f4f5f7;--surface: #ffffff;--border: #dde1e7;--primary: #2563eb;--primary-hover: #1d4ed8;--primary-disabled: #93c5fd;--text: #1e293b;--text-muted: #64748b;--error-bg: #fef2f2;--error-border: #fca5a5;--error-text: #b91c1c;--section-head: #0f172a;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;font-size:14px}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:var(--section-head);color:#f1f5f9;padding:24px 32px}.app-header h1{font-size:22px;font-weight:700;letter-spacing:-.3px}.app-header p{margin-top:4px;font-size:13px;color:#94a3b8}.app-main{max-width:840px;width:100%;margin:32px auto;padding:0 16px 64px}.preset-bar{display:flex;align-items:center;gap:12px;margin-bottom:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;box-shadow:var(--shadow)}.btn-save-preset{padding:7px 14px;font-size:13px;font-weight:600;color:var(--primary);background:none;border:1px solid var(--primary);border-radius:6px;cursor:pointer;white-space:nowrap;transition:background .15s,color .15s;flex-shrink:0}.btn-save-preset:hover{background:var(--primary);color:#fff}.save-prompt{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;margin-bottom:16px;box-shadow:var(--shadow)}.save-prompt label{font-size:13px;font-weight:600;color:var(--text-muted);white-space:nowrap}.save-prompt input[type=text]{flex:1;min-width:180px;border:1px solid var(--border);border-radius:6px;padding:7px 10px;font-size:14px;color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.save-prompt input[type=text]:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}.btn-save-confirm{padding:7px 16px;font-size:13px;font-weight:600;background:var(--primary);color:#fff;border:none;border-radius:6px;cursor:pointer;transition:background .15s}.btn-save-confirm:hover:not(:disabled){background:var(--primary-hover)}.btn-save-confirm:disabled{background:var(--primary-disabled);cursor:not-allowed}.btn-save-cancel{padding:7px 14px;font-size:13px;font-weight:600;background:none;color:var(--text-muted);border:1px solid var(--border);border-radius:6px;cursor:pointer;transition:color .15s,border-color .15s}.btn-save-cancel:hover{color:var(--text);border-color:var(--text-muted)}.save-error{font-size:12px;color:var(--error-text);width:100%}.preset-bar label{font-weight:600;white-space:nowrap;color:var(--text-muted);font-size:13px}.preset-bar select{flex:1}.tabs{display:flex;gap:2px;margin-bottom:16px;border-bottom:2px solid var(--border)}.tab{padding:9px 20px;font-size:13px;font-weight:600;color:var(--text-muted);background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;transition:color .15s,border-color .15s}.tab:hover{color:var(--text)}.tab--active{color:var(--primary);border-bottom-color:var(--primary)}.params-form{display:flex;flex-direction:column;gap:16px}.section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.section h2{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--text-muted);margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--border)}.fields-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.field{display:flex;flex-direction:column;gap:5px}.field label{font-size:13px;font-weight:600;color:var(--text)}.field input[type=number],.field select,.preset-bar select{border:1px solid var(--border);border-radius:6px;padding:7px 10px;font-size:14px;color:var(--text);background:#fff;transition:border-color .15s,box-shadow .15s;outline:none;width:100%}.field input[type=number]:focus,.field select:focus,.preset-bar select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}.field--check label{display:flex;align-items:center;gap:8px;cursor:pointer;font-weight:500}.field--check input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary);cursor:pointer;flex-shrink:0}.field-group{display:flex;flex-direction:column;gap:12px;justify-content:center}.help{font-size:11px;color:var(--text-muted);line-height:1.4}.actions{display:flex;flex-direction:column;align-items:center;gap:12px;padding-top:8px}.btn-generate{display:inline-flex;align-items:center;gap:10px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius);padding:13px 36px;font-size:15px;font-weight:700;cursor:pointer;transition:background .15s,transform .1s;letter-spacing:.1px}.btn-generate:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px)}.btn-generate:disabled{background:var(--primary-disabled);cursor:not-allowed;transform:none}.loading-note{font-size:13px;color:var(--text-muted);text-align:center}.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-box{background:var(--error-bg);border:1px solid var(--error-border);border-radius:var(--radius);padding:14px 16px;color:var(--error-text)}.error-box strong{display:block;margin-bottom:6px}.error-box pre{font-size:12px;white-space:pre-wrap;word-break:break-word;font-family:SF Mono,Fira Code,monospace}