:root{color-scheme:dark;--bg: #0e0f12;--panel: #16181d;--border: #2a2d33;--text: #e7e9ed;--text-dim: #8a8f99;--accent: #ffb454}*,*:before,*:after{box-sizing:border-box}html,body,#app{margin:0;height:100%;width:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,sans-serif;background:var(--bg);color:var(--text);font-size:13px}#container{display:grid;grid-template-columns:340px 1fr;height:100vh}#sidebar{background:var(--panel);border-right:1px solid var(--border);padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}#sidebar h1{font-size:22px;margin:0;letter-spacing:-.02em;font-weight:700}#sidebar h1 span{color:var(--accent)}#sidebar .tagline{margin:0;color:var(--text-dim);font-size:12px}.section{display:flex;flex-direction:column;gap:8px}.section h2{font-size:11px;text-transform:uppercase;letter-spacing:.08em;margin:0;color:var(--text-dim);font-weight:600}.row{display:grid;grid-template-columns:88px 1fr 56px;gap:8px;align-items:center}.row label{font-size:12px;color:var(--text-dim)}.row input[type=text],.row input[type=number],select,button{background:#1c1f25;border:1px solid var(--border);color:var(--text);padding:5px 8px;border-radius:6px;font:inherit;font-size:12px}.row input[type=text]{text-align:right}.row input[type=color]{width:100%;height:26px;padding:0;border:1px solid var(--border);border-radius:6px;background:transparent}.row input[type=range]{width:100%}.size-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}.size-row label{display:block;font-size:11px;color:var(--text-dim);margin-bottom:4px}button{cursor:pointer;transition:background 80ms,border-color 80ms}button:hover{background:#262a32;border-color:#3a3f48}button.primary{background:var(--accent);color:#1a1200;border-color:var(--accent);font-weight:600}button.primary:hover{background:#ffc371;border-color:#ffc371}.button-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}select{width:100%}#editor_host{border:1px solid var(--border);border-radius:6px;overflow:hidden;flex:1 1 240px;min-height:220px;background:#1c1f25}.cm-editor{height:100%;background:#1c1f25}.cm-editor.cm-focused{outline:none}.cm-gutters{background:#16181d!important;border-right:1px solid var(--border)!important;color:var(--text-dim)}#viewer{position:relative;background:#050608;overflow:hidden}#viewer_canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;cursor:grab}#viewer_canvas:active{cursor:grabbing}#error_banner{display:none;position:absolute;left:12px;right:12px;bottom:12px;background:#cc4444eb;color:#fff;padding:10px 14px;border-radius:6px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:12px;white-space:pre-wrap;z-index:10;max-height:30vh;overflow-y:auto}hr{border:0;border-top:1px solid var(--border);margin:4px 0}