:root{--bg: #0b0e12;--panel: #10151b;--text: #e8edf2;--muted: #9aa5b1;--accent: #4cc9f0;--ok: #2dd4bf;--warn: #E48D08;--err: #ef4444;--grid: rgba(255, 255, 255, .06)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;overflow:hidden}body{background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji"}.app{display:flex;flex-direction:column;height:100%;background:#000}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--panel);border-bottom:1px solid #18202a;position:sticky;top:0;z-index:10}.logo{display:block}.brand{font-weight:800;letter-spacing:.2px}.tagline{color:var(--warn);font-size:12px;margin-left:8px;font-style:italic}.topbar .brand{font-weight:600;letter-spacing:.2px}.topbar .tagline{opacity:.8}@media (max-width: 480px){.topbar .tagline{display:none}}.status{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}.badge{background:#0f1720;color:var(--accent);border:1px solid #1e293b;padding:4px 8px;border-radius:999px;font-size:12px;cursor:pointer}.controls{display:flex;gap:8px}.button{background:#111827;border:1px solid #1f2937;color:#c7d2fe;padding:8px 12px;border-radius:8px;cursor:pointer;font-size:14px}.button:disabled{opacity:.5;cursor:not-allowed}.button.primary{background:#1f2937;border-color:#2a3443;color:#e5e7eb}.canvas-wrap{flex:1 1 0;min-height:0;position:relative;overflow:hidden;-webkit-user-select:none;user-select:none}.grid-bg{position:absolute;inset:0;pointer-events:none}.empty-hint{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);pointer-events:none}.modal-backdrop{position:fixed;inset:0;background:#0009;display:grid;place-items:center;z-index:20}.modal{width:520px;max-width:92vw;background:var(--panel);border:1px solid #1e293b;border-radius:14px;padding:18px;box-shadow:0 10px 30px #00000059}.modal h2{margin:0 0 6px}.small{color:var(--muted);font-size:13px}.card{background:#0d1218;border:1px solid #1b2634;padding:12px;border-radius:10px;display:flex;justify-content:space-between;align-items:center;margin:12px 0}.code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace}.toast{position:absolute;right:16px;bottom:16px;background:#0f1720;color:#d1fae5;border:1px solid #1e293b;padding:8px 12px;border-radius:8px}