:root{color-scheme:dark;--bg: #121317;--panel: #1b1d22;--fg: #e8e8ea;--muted: #8b8f99;--accent: #5b7cff;--line: #2b2f38}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font:14px/1.4 system-ui,sans-serif;background:var(--bg);color:var(--fg)}.app{display:flex;height:100%}.sidebar{width:300px;flex:0 0 300px;overflow-y:auto;padding:16px;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:18px}.sidebar h1{font-size:20px;margin:0 0 4px}.sidebar h2{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 8px}.muted{color:var(--muted);margin:0}.mono{font-family:ui-monospace,monospace;font-size:12px}.error{color:#ff6b6b;white-space:pre-wrap}.viewport{flex:1;position:relative;min-width:0}.viewport canvas{display:block}.hud{position:absolute;left:12px;top:12px;padding:6px 10px;background:#0000008c;border-radius:6px;pointer-events:none;font-size:13px}.hud:empty{display:none}.hud kbd{font:11px 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#61e8ffcc}@media(max-width:900px){.showcase.app{display:block;height:auto;min-height:100%}.showcase .sidebar{width:100%;max-height:none;border-right:0;border-bottom:1px solid var(--line)}.showcase .viewport{height:70vh;min-height:480px}}