<!DOCTYPE html>
<html lang="ja">
<head>
<style>
body{font-family:Arial,sans-serif;overflow:hidden}
#container{display:flex;height:100vh}
#canvas-container{flex:1;position:relative;overflow:hidden}
#canvas{position:absolute;top:0;left:0}
#toolbar{width:200px;background:#f0f0f0;display:flex;flex-direction:column}
.tool-btn{cursor:pointer}
#status{position:fixed;bottom:10px;left:10px;background:rgba(0,0,0,0.7);color:white;border-radius:5px}
</style>
</head>
<body>
<div id="container">
<div id="canvas-container