.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    background-color: var(--bg-primary);
}

.app-header {
    flex-shrink: 0;
    height: var(--menubar-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.app-body {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.app-toolbar {
    flex-shrink: 0;
    width: var(--toolbar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.app-workspace {
    flex: 1;
    min-width: 0;
    background-color: var(--canvas-bg);
    overflow: hidden;
    position: relative;
}

.app-sidebar {
    flex-shrink: 0;
    width: var(--panel-width);
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.app-footer {
    flex-shrink: 0;
    height: var(--statusbar-height);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}