.app{flex-direction:column;height:100%;display:flex}.editor{flex:1;min-height:0}:root{--color-bg:#1e1e1e;--color-text:#ccc;--color-toolbar-bg:#252526;--color-button-bg:#3c3c3c;--color-button-hover-bg:#505050}.toolbar{background:var(--color-toolbar-bg);gap:4px;padding:4px 8px;display:flex}.toolbar__button{background:var(--color-button-bg);min-width:32px;height:28px;color:var(--color-text);cursor:pointer;border:none;border-radius:4px}.toolbar__button:hover{background:var(--color-button-hover-bg)}