:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--bg: #0f172a;--surface: #1e293b;--border: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--accent: #a855f7;--accent2: #6366f1}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:Inter,-apple-system,sans-serif}.app{min-height:100vh;display:flex;flex-direction:column;padding:20px;max-width:1000px;margin:0 auto}header{text-align:center;margin-bottom:20px}header h1{font-size:28px;font-weight:800}.accent{background:linear-gradient(135deg,#a855f7,#6366f1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{font-size:13px;color:var(--text-muted)}.workspace{display:flex;gap:20px;flex:1}.sidebar{width:200px;display:flex;flex-direction:column;gap:12px;flex-shrink:0}.panel{background:var(--surface);border-radius:12px;padding:14px}.panel h3{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:10px}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.tool-btn{padding:10px;font-size:18px;background:var(--bg);border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:all .15s}.tool-btn:hover{border-color:var(--accent)}.tool-btn.active{background:var(--accent);border-color:var(--accent)}.color-input{width:100%;height:36px;border:none;border-radius:6px;cursor:pointer;margin-bottom:8px}.palette{display:flex;flex-wrap:wrap;gap:4px}.palette-btn{width:22px;height:22px;border-radius:4px;border:2px solid transparent;cursor:pointer;transition:transform .1s}.palette-btn:hover{transform:scale(1.15)}.palette-btn.active{border-color:#fff;transform:scale(1.2)}.size-btns{display:flex;gap:6px}.size-btn{flex:1;padding:6px;font-family:inherit;font-size:12px;font-weight:600;background:var(--bg);color:var(--text-muted);border:1px solid var(--border);border-radius:6px;cursor:pointer}.size-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.actions{display:flex;flex-direction:column;gap:6px}.actions button{padding:8px;font-family:inherit;font-size:12px;font-weight:600;background:var(--bg);color:var(--text-muted);border:1px solid var(--border);border-radius:6px;cursor:pointer;transition:all .15s}.actions button:hover:not(:disabled){border-color:var(--accent);color:var(--text)}.actions button:disabled{opacity:.4;cursor:default}.export-btn{background:var(--accent)!important;color:#fff!important;border-color:var(--accent)!important}.grid-canvas{display:grid;background:#fff;border-radius:8px;overflow:hidden;flex:1;aspect-ratio:1;max-width:560px;max-height:560px;cursor:crosshair;align-self:start}.grid-canvas.with-grid{gap:1px;background:#cbd5e1}.pixel{transition:none}.pixel:hover{opacity:.8}footer{text-align:center;padding:16px;font-size:12px;color:var(--text-muted);margin-top:16px}footer a{color:var(--accent);text-decoration:none}@media (max-width: 700px){.workspace{flex-direction:column}.sidebar{width:100%;flex-direction:row;flex-wrap:wrap}.panel{flex:1;min-width:150px}.grid-canvas{max-width:100%}}