body{margin:0;padding:0;font-family:Segoe UI,sans-serif;background:#f7f9fa;color:#414042}.dark-mode{background-color:#1a1a1a;color:#fff}header{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:#39B54A;color:#fff}.sidebar{width:220px;background:#fff;padding:1rem;border-right:1px solid #ddd}.sidebar.dark{background:#333;color:#fff}.machine-item{padding:.5rem;cursor:pointer;border-bottom:1px solid #eee}.machine-item:hover{background-color:#f0f0f0}.toggle-theme{background:none;border:1px solid white;padding:.4rem 1rem;border-radius:6px;color:#fff;cursor:pointer}