:root{--bg:#0b0f14;--card:#101826;--card2:#0f1622;--border:rgba(255,255,255,.1);--muted:rgba(255,255,255,.65);--muted2:rgba(255,255,255,.45);--accent:#00ffff;--danger:#ff6b6b }*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#fff;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.appShell{display:grid;grid-template-columns:380px 1fr;gap:18px;padding:18px;min-height:100vh}@media(max-width:980px){.appShell{grid-template-columns:1fr}}.leftPanel{position:sticky;top:18px;height:calc(100vh - 36px);overflow:hidden;align-self:start}.panelCard{background:linear-gradient(180deg,#101826eb,#101826b8);border:1px solid var(--border);border-radius:14px;padding:14px;box-shadow:0 10px 30px #00000059}.panelHeader{padding:6px 6px 12px;border-bottom:1px solid var(--border);margin-bottom:12px}.title{font-size:20px;font-weight:700}.subtitle{margin-top:4px;font-size:13px;color:var(--muted2)}.section{padding:12px 6px;border-bottom:1px solid rgba(255,255,255,.06)}.section:last-child{border-bottom:none}.sectionTitle{font-size:12px;color:var(--muted2);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}.spinInput,select,input[type=number]{width:100%;background:#00000040;border:1px solid rgba(255,255,255,.14);color:#fff;border-radius:10px;padding:10px;outline:none}.btn{background:#ffffff0a;border:1px solid rgba(255,255,255,.14);color:#fff;border-radius:10px;padding:10px;cursor:pointer}.btn:hover{border-color:#00ffff59}.primaryBtn{width:100%;padding:12px;border-radius:12px;border:1px solid rgba(0,255,255,.45);background:#00ffff1a;color:#fff;font-weight:800;cursor:pointer}.primaryBtn:disabled{opacity:.55;cursor:not-allowed}.hint{margin-top:12px;font-size:12px;color:var(--muted2);text-align:center}.rightPanel{position:sticky;top:18px;height:calc(100vh - 36px);overflow:hidden;align-self:start}.previewCard{background:linear-gradient(180deg,#0f1622eb,#0f1622b8);border:1px solid var(--border);border-radius:14px;padding:14px;height:100%;display:flex;flex-direction:column}.spinRow{display:grid;grid-template-columns:1fr 36px;gap:10px;align-items:stretch}.spinBtns{display:grid;grid-template-rows:1fr 1fr;gap:8px}.spinBtn{display:flex;align-items:center;justify-content:center;background:#ffffff0a;border:1px solid rgba(255,255,255,.14);color:#fff;border-radius:10px;cursor:pointer;font-size:14px;line-height:1}.spinBtn:hover{border-color:var(--accent);box-shadow:0 0 8px #00ffff59}input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield}