body{margin:0;font-family:Arial;background:#f8fafc}
.upload-page{height:100vh;display:flex;align-items:center;justify-content:center}
.upload-box{text-align:center}
button{padding:12px 20px;background:#22c55e;border:0;color:#fff;border-radius:6px;cursor:pointer}
.editor{display:grid;grid-template-columns:300px 1fr;height:100vh}
.tools{padding:20px;background:#e5e7eb}
.tools button{display:block;width:100%;margin-bottom:8px}
.tool-options{display:none;margin-top:10px}
.preview{display:flex;align-items:center;justify-content:center;background:#fff}
canvas{max-width:100%;max-height:100%}