:root{--bg-shell: #0f1217;--bg-panel: #161b23;--bg-elevated: #1e2530;--bg-hover: #262f3e;--border-subtle: #283140;--border-strong: #39465c;--text-primary: #e8edf5;--text-secondary: #9ba7b8;--text-muted: #6e7b8f;--accent-cyan: #38bdf8;--accent-amber: #f59e0b;--accent-emerald: #34d399;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, monospace}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:var(--bg-shell);color:var(--text-primary);font-family:var(--font-sans);font-size:13px;-webkit-font-smoothing:antialiased}.studio-shell{display:grid;grid-template-rows:52px 1fr 62px;width:100vw;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 14px;background:var(--bg-panel);border-bottom:1px solid 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